{$optimize 7} {---------------------------------------------------------------} { } { Scanner } { } { External Variables: } { } { ch - next character to process } { printMacroExpansions - print the token list? } { reportEOL - report eolsy as a token? } { token - next token to process } { } { External Subroutines: } { } { Error - flag an error } { IsDefined - see if a macro name is in the macro table } { InitScanner - initialize the scanner } { NextCh - Read the next character from the file, skipping } { comments. } { NextToken - read the next token from the file } { PutBackToken - place a token into the token stream } { TermScanner - Shut down the scanner. } { } {---------------------------------------------------------------} unit Scanner; interface {$LibPrefix '0/obj/'} uses CCommon, Table, CGI, MM, Charset; {$segment 'SCANNER'} type pragmas = {kinds of pragmas} (p_startofenum,p_cda,p_cdev,p_float,p_keep, p_nda,p_debug,p_lint,p_memorymodel,p_expand, p_optimize,p_stacksize,p_toolparms,p_databank,p_rtl, p_noroot,p_path,p_ignore,p_segment,p_nba, p_xcmd,p_unix,p_line,p_fenv_access,p_extensions, p_endofenum); {preprocessor types} {------------------} tokenListRecordPtr = ^tokenListRecord; tokenListRecord = record {element of a list of tokens} next: tokenListRecordPtr; {next element in list} token: tokenType; {token} expandEnabled: boolean; {can this token be macro expanded?} suppressPrint: boolean; {suppress printing with #pragma expand?} tokenStart,tokenEnd: ptr; {token start/end markers} end; macroRecordPtr = ^macroRecord; macroRecord = record {preprocessor macro definition} next: macroRecordPtr; saved: boolean; name: stringPtr; parameters: integer; isVarargs: boolean; tokens: tokenListRecordPtr; readOnly: boolean; algorithm: integer; end; macroTable = array[0..hashSize] of macroRecordPtr; {preprocessor macro list} {path name lists} {---------------} pathRecordPtr = ^pathRecord; pathRecord = record next: pathRecordPtr; path: stringPtr; end; var ch: char; {next character to process} macros: ^macroTable; {preprocessor macro list} pathList: pathRecordPtr; {additional search paths} printMacroExpansions: boolean; {print the token list?} preprocessing: boolean; {doing pp directive or macro params?} suppressMacroExpansions: boolean; {suppress printing even if requested?} reportEOL: boolean; {report eolsy as a token?} token: tokenType; {next token to process} doingFakeFile: boolean; {processing tokens from fake "file" in memory?} {#pragma ignore flags} {--------------------} allowLongIntChar: boolean; {allow long int char constants?} allowSlashSlashComments: boolean; {allow // comments?} allowTokensAfterEndif: boolean; {allow tokens after #endif?} skipIllegalTokens: boolean; {skip flagging illegal tokens in skipped code?} {Note: The following two are set together} allowMixedDeclarations: boolean; {allow mixed declarations & stmts (C99)?} c99Scope: boolean; {follow C99 rules for block scopes?} looseTypeChecks: boolean; {loosen some standard type checks?} {#pragma extensions flags} {------------------------} extendedKeywords: boolean; {recognize ORCA/C-specific keywords?} extendedParameters: boolean; {change all floating params to extended?} {---------------------------------------------------------------} procedure DoDefaultsDotH; { Handle the defaults.h file } procedure Error (err: integer); { flag an error } { } { err - error number } procedure ErrorWithExtraString (err:integer; extraStr: stringPtr); { flag an error, with an extra string to be attached to it } { } { err - error number } { extraStr - extra string to include in error message } { } { Note: } { extraStr must point to a pString allocated with new. } { This call transfers ownership of it. } {procedure Error2 (loc, err: integer); {debug} { flag an error } { } { loc - error location } { err - error number } procedure InitScanner (start, endPtr: ptr); { initialize the scanner } { } { start - pointer to the first character in the file } { endPtr - points one byte past the last character in the file } function IsDefined (name: stringPtr): boolean; { See if a macro name is in the macro table } { } { The returned value is true if the macro exists, else false. } { } { parameters: } { name - name of the macro to search for } procedure NextCh; extern; { Read the next character from the file, skipping comments. } { } { Globals: } { ch - character read } { currentChPtr - pointer to ch in source file } procedure NextToken; { Read the next token from the file. } procedure PutBackToken (var token: tokenType; expandEnabled: boolean; suppressPrint: boolean); { place a token into the token stream } { } { parameters: } { token - token to put back into the token stream } { expandEnabled - can macro expansion be performed? } { suppressPrint - suppress printing with #pragma expand? } procedure TermScanner; { Shut down the scanner. } procedure WriteLine; {---------------------------------------------------------------} implementation const {special key values} {------------------} ALERT = 7; {alert (bell)} BS = 8; {backspace} FF = 12; {form feed} HT = 9; {horizontal tab} NEWLINE = 10; {newline} RETURN = 13; {RETURN key code} VT = 11; {vertical tab} {misc} {----} defaultName = '13:ORCACDefs:Defaults.h'; {default include file name} maxErr = 10; {max errors on one line} maxLint = 186; {maximum lint error code} type errorType = record {record of a single error} num: integer; {error number} line: longint; {line number} col: integer; {column number} extraStr: stringPtr; {extra text to include in message} end; {file inclusion} {--------------} filePtr = ^fileRecord; fileRecord = record {NOTE: used in scanner.asm} next: filePtr; {next file in include stack} name: gsosOutString; {name of the file} sname: gsosOutString; {name of the file for __FILE__} lineNumber: longint; {line number at the #include} disp: longint; {disp of next character to process} end; getFileInfoOSDCB = record pcount: integer; pathName: gsosInStringPtr; access: integer; fileType: integer; auxType: longint; storageType: integer; createDateTime: timeField; modDateTime: timeField; optionList: optionListPtr; dataEOF: longint; blocksUsed: longint; resourceEOF: longint; resourceBlocks: longint; end; expandDevicesDCBGS = record pcount: integer; inName: gsosInStringPtr; outName: gsosOutStringPtr; end; {conditional compilation parsing} {-------------------------------} ifPtr = ^ifRecord; ifRecord = record next: ifPtr; {next record in if stack} status: {what are we doing?} (processing,skippingToEndif,skippingToElse); elseFound: boolean; {has an #else been found?} theFile: filePtr; {file containing the #if} end; onOffEnum = (on,off,default); {on-off values in standard pragmas} var charStrPrefix: charStrPrefixEnum; {prefix of character/string literal} currentChPtr: ptr; {pointer to current character in source file} customDefaultName: stringPtr; {name of custom pre-included default file} dateStr: longStringPtr; {macro date string} doingCommandLine: boolean; {are we processing the cc= command line?} doingDigitSequence: boolean; {do we want a digit sequence (for #line)?} doingPPExpression: boolean; {are we processing a preprocessor expression?} doingStringOrCharacter: boolean; {used to suppress comments in strings} errors: array[1..maxErr] of errorType; {errors in this line} eofPtr: ptr; {points one byte past the last char in the file} fileList: filePtr; {include file list} flagOverflows: boolean; {flag numeric overflows?} gettingFileName: boolean; {are we in GetFileName?} lastWasReturn: boolean; {was the last character an eol?} lineStr: string[10]; {string form of __LINE__} ifList: ifPtr; {points to the top prep. parse record} includeChPtr: ptr; {chPtr at start of current token} includeCount: 0..maxint; {nested include files (for EndInclude)} macroFound: macroRecordPtr; {last macro found by IsDefined} mergingStrings: boolean; {is NextToken trying to merge strings?} needWriteLine: boolean; {is there a line that needs to be written?} octHexEscape: boolean; {octal/hex escape in char/string?} onOffValue: onOffEnum; {value of last on-off switch} wroteLine: boolean; {has the current line already been written?} numErr: 0..maxErr; {number of errors in this line} oneStr: string[2]; {string form of __STDC__, etc.} zeroStr: string[2]; {string form of __STDC_HOSTED__ when not hosted} ispstring: boolean; {is the current string a p-string?} saveNumber: boolean; {save the characters in a number?} skipping: boolean; {skipping tokens?} stdcVersionStr: string[8]; {string form of __STDC_VERSION__} timeStr: longStringPtr; {macro time string} tokenColumn: 0..maxint; {column number at start of this token} tokenLine: 0..maxint4; {line number at start of this token} tokenList: tokenListRecordPtr; {token putback buffer} tokenStart: ptr; {pointer to the first char in the token} tokenEnd: ptr; {pointer to the first char past the token} tokenExpandEnabled: boolean; {can token be macro expanded? (only for ident)} versionStrL: longStringPtr; {macro version string} workString: pstring; {for building strings and identifiers} ucnString: string[10]; {string of a UCN} lintErrors: set of 1..maxLint; {lint error codes} spaceStr: string[2]; {string ' ' (used in stringization)} quoteStr: string[2]; {string '"' (used in stringization)} numericConstants: set of tokenClass; {token classes for numeric constants} {-- External procedures; see expression evaluator for notes ----} procedure EndInclude (chPtr: ptr); extern; { Saves symbols created by the include file } { } { Parameters: } { chPtr - chPtr when the file returned } { } { Notes: } { 1. Call this subroutine right after processing an } { include file. } { 2. Fron Header.pas } procedure ExpandDevicesGS (var parms: expandDevicesDCBGS); prodos ($0154); procedure Expression (kind: expressionKind; stopSym: tokenSet); extern; { handle an expression } function FindSymbol (var tk: tokenType; class: spaceType; oneLevel: boolean; staticAllowed: boolean): identPtr; extern; { locate a symbol in the symbol table } { } { parameters: } { tk - token record for the identifier to find } { class - the kind of variable space to search } { oneLevel - search one level only? (used to check for } { duplicate symbols) } { staticAllowed - can we check for static variables? } { } { returns: } { A pointer to the symbol table entry is returned. If } { there is no entry, nil is returned. } procedure FlagPragmas (pragma: pragmas); extern; { record the effects of a pragma } { } { parameters: } { pragma - pragma to record } { } { Notes: } { 1. From Header.pas } procedure GetFileInfoGS (var parms: getFileInfoOSDCB); prodos ($2006); procedure StartInclude (name: gsosOutStringPtr); extern; { Marks the start of an include file } { } { Notes: } { 1. Call this subroutine right after opening an include } { file. } { 2. From Header.pas } function StringType(prefix: charStrPrefixEnum): typePtr; extern; { returns the type of a string literal with specified prefix } { } { parameters: } { prefix - the prefix } procedure TermHeader; extern; { Stop processing the header file } { } { Note: This is called when the first code-generating } { subroutine is found, and again when the compile ends. It } { closes any open symbol file, and should take no action if } { called twice. } function CnvLLX (val: longlong): extended; extern; { convert a long long to a real number } { } { parameters: } { val - the long long value } function CnvULLX (val: longlong): extended; extern; { convert an unsigned long long to a real number } { } { parameters: } { val - the unsigned long long value } {-- Scanner support --------------------------------------------} procedure CheckDelimiters (var name: pString); { Check for delimiters, making sure they are ':' } { } { parameters: } { name - path name to check } label 1; var dc: char; {delimiter character} i: 0..255; {loop/index variable} begin {CheckDelimiters} dc := ':'; {determine what the delimiter is} for i := 1 to length(name) do if name[i] in [':','/'] then begin dc := name[i]; goto 1; end; {if} 1: ; if dc = '/' then {replace '/' delimiters with ':'} for i := 1 to length(name) do if name[i] = '/' then name[i] := ':'; end; {CheckDelimiters} procedure AddPath (name: pString); { Add a path name to the path name table } { } { parameters: } { name - path name to add } var pp, ppe: pathRecordPtr; {work pointers} begin {AddPath} if length(name) <> 0 then begin CheckDelimiters(name); {make sure ':' is used} if name[length(name)] <> ':' then {make sure there is a trailing delimiter} name := concat(name, ':'); {create the new path record} pp := pathRecordPtr(GMalloc(sizeof(pathRecord))); pp^.next := nil; pp^.path := stringPtr(GMalloc(length(name)+1)); pp^.path^ := name; if pathList = nil then {add the path to the path list} pathList := pp else begin ppe := pathList; while ppe^.next <> nil do ppe := ppe^.next; ppe^.next := pp; end; {else} end; {if} end; {AddPath} function Convertsl(var str: pString): longint; extern; { Return the integer equivalent of the string. Assumes a valid } { 4-byte integer string; supports unsigned values. } procedure Convertsll(var qval: longlong; var str: pString); extern; { Save the integer equivalent of the string to qval. Assumes a } { valid 8-byte integer string; supports unsigned values. } function ConvertHexFloat(var str: pString): extended; extern; { Return the extended equivalent of the hexadecimal floating- } { point string. } procedure SetDateTime; extern; { set up the macro date/time strings } function KeyPress: boolean; extern; { Has a key been pressed? } { } { If a key has not been pressed, this function returns } { false. If a key has been pressed, it clears the key } { strobe. If the key was an open-apple ., a terminal exit } { is performed; otherwise, the function returns true. } function IsDefined {name: stringPtr): boolean}; { See if a macro name is in the macro table } { } { The returned value is true if the macro exists, else false. } { } { parameters: } { name - name of the macro to search for } { } { outputs: } { macroFound - pointer to the macro found } label 1; var bPtr: ^macroRecordPtr; {pointer to hash bucket} mPtr: macroRecordPtr; {for checking list of macros} begin {IsDefined} IsDefined := false; bPtr := pointer(ord4(macros) + Hash(name)); mPtr := bPtr^; while mPtr <> nil do begin if mPtr^.name^ = name^ then begin if mPtr^.algorithm <> 8 then {if not _Pragma pseudo-macro} IsDefined := true; goto 1; end; {if} mPtr := mPtr^.next; end; {while} 1: macroFound := mPtr; end; {IsDefined} procedure PutBackToken {var token: tokenType; expandEnabled: boolean; suppressPrint: boolean}; { place a token into the token stream } { } { parameters: } { token - token to put back into the token stream } { expandEnabled - can macro expansion be performed? } { suppressPrint - suppress printing with #pragma expand? } var tPtr: tokenListRecordPtr; {work pointer} begin {PutBackToken} new(tPtr); tPtr^.next := tokenList; tokenList := tPtr; tPtr^.token := token; tPtr^.expandEnabled := expandEnabled; tPtr^.suppressPrint := suppressPrint; tPtr^.tokenStart := tokenStart; tPtr^.tokenEnd := tokenEnd; end; {PutBackToken} procedure WriteLine; { Write the current line and any error messages to the screen. } { } { Global Variables: } { firstPtr - points to the first char in the line } { chPtr - points to the end of line character } label 1; var cl: integer; {column number loop index} cp: ptr; {work pointer} i: 1..maxErr; {error loop index} msg: stringPtr; {pointer to the error message} begin {WriteLine} if list or (numErr <> 0) then begin if not wroteLine and not doingCommandLine then begin if numErr <> 0 then if filenamesInErrors then writeln('In ',sourceFileGS.theString.theString,':'); if doingFakeFile then begin if numErr = 0 then goto 1 else begin writeln('In expansion of _Pragma on line ', fileList^.lineNumber:1, ':'); write(' '); end; {else} end {if} else write(lineNumber:4, ' '); {write the line #} cp := firstPtr; {write the characters in the line} while (cp <> eofPtr) and (charKinds[ord(cp^)] <> ch_eol) do begin write(chr(cp^)); cp := pointer(ord4(cp) + 1); end; {while} writeln; {write the end of line character} wroteLine := true; end; {if} for i := 1 to numErr do {write any errors} with errors[i] do begin if line = lineNumber then begin write(' '); while lineNumber >= 10000 do begin lineNumber := lineNumber div 10; write(' '); end; {while} lineNumber := line; cp := firstPtr; for cl := 1 to col-1 do begin if cp^ = HT then write(chr(HT)) else write(' '); cp := pointer(ord4(cp) + 1); end; {for} write('^ '); end {if} else if doingCommandLine then write(' Error in command line: ') else write(' Error in column ', col:1, ' of line ', line:1, ': '); case num of 1 : msg := @'illegal character'; 2 : msg := @'invalid character constant'; 3 : msg := @'no end was found to the string'; 4 : msg := @'further errors suppressed'; 5 : msg := @'cannot redefine a macro'; 6 : msg := @'integer overflow'; 7 : msg := @'''8'' and ''9'' cannot be used in octal constants'; 8 : msg := @'unknown preprocessor command'; 9 : msg := @'identifier expected'; 10: msg := @'cannot undefine standard macros'; 11: msg := @'end of line expected'; 12: msg := @''')'' expected'; 13: msg := @'''('' expected'; 14: msg := @'incorrect number of macro parameters'; 15: msg := @'''>'' expected'; 16: msg := @'file name is too long'; 17: msg := @'keep must appear before any functions'; 18: msg := @'integer constant expected'; 19: msg := @'only one #else may be used per #if'; 20: msg := @'there is no #if for this directive'; 21: msg := @'an #if had no closing #endif'; 22: msg := @''';'' expected'; 23: msg := @'''}'' expected'; 24: msg := @''']'' expected'; 25: msg := @'the else has no matching if'; 26: msg := @'type expected'; 27: msg := @'''{'' expected'; 28: msg := @'a function cannot be defined here'; 29: msg := @''':'' expected'; 30: msg := @'''while'' expected'; 31: msg := @'undeclared identifier'; 32: msg := @'the last if statement was not finished'; 33: msg := @'the last do statement was not finished'; 34: msg := @'the last compound statement was not finished'; 35: msg := @'expression expected'; 36: msg := @'expression syntax error'; 37: msg := @'operand expected'; 38: msg := @'operation expected'; 39: msg := @'no matching ''?'' found for this '':'' operator'; 40: msg := @'illegal type cast'; 41: msg := @'illegal operand in a constant expression'; 42: msg := @'duplicate symbol'; {43: msg := @'the function''s type must match the previous declaration';} 44: msg := @'too many initializers'; 45: msg := @'the number of array elements must be greater than 0'; 46: msg := @'you must initialize the individual elements of a struct, union, or non-char array'; 47: msg := @'type conflict'; 48: msg := @'pointer initializers must resolve to an integer, address or string'; 49: msg := @'the size could not be determined'; 50: msg := @'only parameters or types may be declared here'; 51: msg := @'lint: undefined function'; 52: msg := @'you cannot initialize a type'; 53: msg := @'the struct, union, or enum has already been defined'; 54: msg := @'bit fields must be less than 32 bits wide'; 55: msg := @'a value cannot be zero bits wide'; {56: msg := @'bit fields in unions are not supported by ORCA/C';} 57,otherwise: msg := @'compiler error'; 58: msg := @'implementation restriction: too many local labels'; 59: msg := @'file name expected'; 60: msg := @'implementation restriction: string space exhausted'; 61: msg := @'implementation restriction: run-time stack space exhausted'; 62: msg := @'auto or register can only be used in a function body'; 63: msg := @'token merging produced an illegal token'; 64: msg := @'assignment to an array is not allowed'; 65: msg := @'assignment to void is not allowed'; 66: msg := @'the operation cannot be performed on operands of the type given'; 67: msg := @'the last else clause was not finished'; 68: msg := @'the last while statement was not finished'; 69: msg := @'the last for statement was not finished'; 70: msg := @'the last switch statement was not finished'; 71: msg := @'switch expressions must evaluate to integers'; 72: msg := @'case and default labels must appear in a switch statement'; 73: msg := @'duplicate case label'; 74: msg := @'only one default label is allowed in a switch statement'; 75: msg := @'continue must appear in a while, do or for loop'; 76: msg := @'break must appear in a while, do, for or switch statement'; 77: msg := @'duplicate label'; 78: msg := @'l-value required'; 79: msg := @'illegal operand for the indirection operator'; 80: msg := @'the selection operator must be used on a structure or union'; 81: msg := @'the selected field does not exist in the structure or union'; 82: msg := @'''('', ''['' or ''*'' expected'; 83: msg := @'string constant expected'; 84: msg := @'''dynamic'' expected'; 85: msg := @'the number of parameters does not agree with the prototype'; 86: msg := @''','' expected'; 87: msg := @'invalid storage type for a parameter'; 88: msg := @'you cannot initialize a parameter'; 89: msg := @'''.'' expected'; 90: msg := @'string too long'; 91: msg := @'real constants cannot be unsigned'; 92: msg := @'statement expected'; 93: msg := @'assignment to const is not allowed'; 94: msg := @'pascal qualifier is only allowed on functions'; 95: msg := @'unidentified operation code'; 96: msg := @'incorrect operand size'; 97: msg := @'operand syntax error'; 98: msg := @'invalid operand'; {99: msg := @'comp data type is not supported by the 68881';} 100: msg := @'integer constants cannot use the f designator'; 101: msg := @'digits expected in the exponent'; {102: msg := @'extern variables cannot be initialized';} 103: msg := @'functions cannot return functions or arrays'; 104: msg := @'lint: missing function type'; 105: msg := @'lint: parameter list not prototyped'; 106: msg := @'cannot take the address of a bit field'; 107: msg := @'illegal use of forward declaration'; 108: msg := @'unknown or invalid cc= option'; 109: msg := @'illegal math operation in a constant expression'; 110: msg := @'lint: unknown pragma'; {111: msg := @'the & operator cannot be applied to arrays';} {112: msg := @'segment buffer overflow';} 113: msg := @'all parameters must have a name'; 114: msg := @'a function call was made to a non-function'; 115: msg := @'illegal bit field declaration'; 116: msg := @'missing field name'; 117: msg := @'field cannot have incomplete or function type'; 118: msg := @'flexible array must be last member of structure'; 119: msg := @'inline specifier is only allowed on functions'; {120: msg := @'inline functions without ''static'' or ''extern'' are not supported';} 121: msg := @'invalid digit for binary constant'; 122: msg := @'arithmetic is not allowed on a pointer to an incomplete or function type'; 123: msg := @'array element type may not be an incomplete or function type'; 124: msg := @'lint: invalid format string or arguments'; 125: msg := @'lint: format string is not a string literal'; 126: msg := @'scope rules may not be changed within a function'; 127: msg := @'illegal storage class for declaration in for loop'; 128: msg := @'lint: integer overflow in expression'; 129: msg := @'lint: division by zero'; 130: msg := @'lint: invalid shift count'; 131: msg := @'numeric constant is too long'; 132: msg := @'static assertion failed'; 133: msg := @'incomplete or function types may not be used here'; {134: msg := @'''long long'' types are not supported by ORCA/C';} {135: msg := @'the type _Bool is not supported by ORCA/C';} 136: msg := @'complex or imaginary types are not supported by ORCA/C'; 137: msg := @'atomic types are not supported by ORCA/C'; 138: msg := @'unsupported alignment'; {139: msg := @'thread-local storage is not supported by ORCA/C';} 140: msg := @'unexpected token'; 141: msg := @'_Noreturn specifier is only allowed on functions'; 142: msg := @'_Alignas may not be used in this declaration or type name'; 143: msg := @'only object pointer types may be restrict-qualified'; {144: msg := @'generic selection expressions are not supported by ORCA/C';} 145: msg := @'invalid universal character name'; 146: msg := @'Unicode character cannot be represented in execution character set'; 147: msg := @'lint: not all parameters were declared with a type'; 148: msg := @'all parameters must have a complete type'; 149: msg := @'invalid universal character name for use in an identifier'; 150: msg := @'designated initializers are not supported by ORCA/C'; 151: msg := @'lint: type specifier missing'; 152: msg := @'lint: return with no value in non-void function'; 153: msg := @'lint: return statement in function declared _Noreturn'; 154: msg := @'lint: function declared _Noreturn can return or has unreachable code'; 155: msg := @'lint: non-void function may not return a value or has unreachable code'; 156: msg := @'invalid suffix on numeric constant'; 157: msg := @'unknown or malformed standard pragma'; 158: msg := @'_Generic expression includes two compatible types'; 159: msg := @'_Generic expression includes multiple default cases'; 160: msg := @'no matching association in _Generic expression'; 161: msg := @'illegal operator in a constant expression'; 162: msg := @'invalid escape sequence'; 163: msg := @'pointer assignment discards qualifier(s)'; {164: msg := @'compound literals within functions are not supported by ORCA/C';} 165: msg := @'''\p'' may not be used in a prefixed string'; 166: msg := @'string literals with these prefixes may not be merged'; 167: msg := @'''L''-prefixed character or string constants are not supported by ORCA/C'; 168: msg := @'malformed hexadecimal floating constant'; 169: msg := @'struct or array may not contain a struct with a flexible array member'; 170: msg := @'lint: no whitespace after macro name'; 171: msg := @'use of an incomplete enum type is not allowed'; 172: msg := @'macro replacement list may not start or end with ''##'''; 173: msg := @'''#'' must be followed by a macro parameter'; 174: msg := @'''__VA_ARGS__'' may only be used in a variadic macro'; 175: msg := @'duplicate macro parameter name'; 176: msg := @'declarator expected'; 177: msg := @'_Thread_local may not be used with the specified storage class'; 178: msg := @'_Thread_local may not appear in a function declaration'; 179: msg := @'_Pragma requires one string literal argument'; 180: msg := @'decimal digit sequence expected'; 181: msg := @'''main'' may not have any function specifiers'; 182: msg := @'''='' expected'; 183: msg := @'array index out of bounds'; 184: msg := @'segment exceeds bank size'; 185: msg := @'lint: unused variable: '; 186: msg := @'lint: implicit conversion changes value of constant'; 187: msg := @'expression has incomplete struct or union type'; 188: msg := @'local variable used in asm statement is out of range for addressing mode'; end; {case} if extraStr <> nil then begin extraStr^ := concat(msg^,extraStr^); msg := extraStr; end; {if} writeln(msg^); if terminalErrors and (numErrors <> 0) and (lintIsError or not (num in lintErrors)) then begin if enterEditor then begin if doingFakeFile then ExitToEditor(msg, fileList^.disp-1) else if line = lineNumber then ExitToEditor(msg, ord4(firstPtr)+col-ord4(bofPtr)-1) else ExitToEditor(msg, ord4(firstPtr)-ord4(bofPtr)-1); end {if} else TermError(0); end; {if} if extraStr <> nil then dispose(extraStr); end; {with} {handle pauses} if ((numErr <> 0) and wait) or KeyPress then begin DrawHourglass; while not KeyPress do {nothing}; ClearHourglass; end; {if} numErr := 0; {no errors on next line...} end {if} else if KeyPress then begin {handle pauses} DrawHourglass; while not KeyPress do {nothing}; ClearHourglass; end; {if} Spin; {twirl the spinner} 1: end; {WriteLine} procedure PrintToken (token: tokenType); { Write a token to standard out } { } { parameters: } { token - token to print } label 1; var ch: char; {work character} i: integer; {loop counter} str: string[23]; {temp string} c16ptr: ^integer; {pointer to char16_t value} c32ptr: ^longint; {pointer to char32_t value} procedure PrintHexDigits(i: longint; count: integer); { Print a digit as a hex character } { } { Parameters: } { i: value to print in hexadecimal } { count: number of digits to print } var digit: integer; {hex digit value} shift: integer; {amount to shift by} begin {PrintHexDigits} shift := 4 * (count-1); while shift >= 0 do begin digit := ord(i >> shift) & $000F; if digit < 10 then write(chr(digit | ord('0'))) else write(chr(digit + ord('A') - 10)); shift := shift - 4; end; {while} end; {PrintHexDigits} begin {PrintToken} case token.kind of typedef, ident: write(token.name^); charconst, scharconst, ucharconst, intconst: write(token.ival:1); ushortconst, uintconst: write(token.ival:1,'U'); longConst: write(token.lval:1,'L'); ulongConst: write(token.lval:1,'UL'); longlongConst: begin str := cnvds(CnvLLX(token.qval),1,1); str[0] := chr(ord(str[0]) - 2); write(str,'LL'); end; ulonglongConst: begin str := cnvds(CnvULLX(token.qval),1,1); str[0] := chr(ord(str[0]) - 2); write(str,'ULL'); end; compConst, doubleConst: write(token.rval:24); floatConst: write(token.rval:16,'F'); extendedConst: write(token.rval:29,'L'); stringConst: begin if token.prefix = prefix_u16 then begin write('u"'); i := 1; while i < token.sval^.length-2 do begin write('\x'); c16Ptr := pointer(@token.sval^.str[i]); PrintHexDigits(c16Ptr^, 4); i := i + 2; end; {while} end {if} else if token.prefix = prefix_U32 then begin write('U"'); i := 1; while i < token.sval^.length-4 do begin write('\x'); c32Ptr := pointer(@token.sval^.str[i]); PrintHexDigits(c32Ptr^, 8); i := i + 4; end; {while} end {else if} else begin write('"'); for i := 1 to token.sval^.length-1 do begin ch := token.sval^.str[i]; if ch in [' '..'~'] then begin if ch in ['"','\','?'] then write('\'); write(ch); end {if} else begin write('\'); write((ord(ch)>>6):1); write(((ord(ch)>>3) & $0007):1); write((ord(ch) & $0007):1); end; {else} end; {for} end; {else} write('"'); end; _Alignassy,_Alignofsy,_Atomicsy,_Boolsy,_Complexsy, _Genericsy,_Imaginarysy,_Noreturnsy,_Static_assertsy,_Thread_localsy, autosy,asmsy,breaksy,casesy,charsy, continuesy,constsy,compsy,defaultsy,dosy, doublesy,elsesy,enumsy,externsy,extendedsy, floatsy,forsy,gotosy,ifsy,intsy, inlinesy,longsy,pascalsy,registersy,restrictsy, returnsy,shortsy,sizeofsy,staticsy,structsy, switchsy,segmentsy,signedsy,typedefsy,unionsy, unsignedsy,voidsy,volatilesy,whilesy: write(reservedWords[token.kind]); tildech,questionch,lparench,rparench,commach,semicolonch,colonch: begin for i := minChar to maxChar do if charSym[i] = token.kind then begin write(chr(i)); goto 1; end; {if} end; lbrackch: if not token.isDigraph then write('[') else write('<:'); rbrackch: if not token.isDigraph then write(']') else write(':>'); lbracech: if not token.isDigraph then write('{') else write('<%'); rbracech: if not token.isDigraph then write('}') else write('%>'); poundch: if not token.isDigraph then write('#') else write('%:'); minusch: write('-'); plusch: write('+'); ltch: write('<'); gtch: write('>'); eqch: write('='); excch: write('!'); andch: write('&'); barch: write('|'); percentch: write('%'); carotch: write('^'); asteriskch: write('*'); slashch: write('/'); dotch: write('.'); minusgtop: write('->'); opplusplus, plusplusop: write('++'); opminusminus, minusminusop: write('--'); ltltop: write('<<'); gtgtop: write('>>'); lteqop: write('<='); gteqop: write('>='); eqeqop: write('=='); exceqop: write('!='); andandop: write('&&'); barbarop: write('||'); pluseqop: write('+='); minuseqop: write('-='); asteriskeqop: write('*='); slasheqop: write('/='); percenteqop: write('%='); ltlteqop: write('<<='); gtgteqop: write('>>='); andeqop: write('&='); caroteqop: write('^='); bareqop: write('!='); uminus: write('-'); uplus: write('+'); uand: write('&'); uasterisk: write('*'); poundpoundop: if not token.isDigraph then write('##') else write('%:%:'); dotdotdotsy: write('...'); otherch: write(token.ch); macroParm: write('$', token.pnum:1); parameteroper, castoper, eolsy, eofsy: ; end; {case} 1: write(' '); end; {PrintToken} { copy 'Scanner.debug'} {debug} {-- The Preprocessor -------------------------------------------} procedure CheckIdentifier; forward; { See if an identifier is a reserved word, macro or typedef } procedure DoNumber (scanWork: boolean); forward; { The current character starts a number - scan it } { } { Parameters: } { scanWork - get characters from workString? } { } { Globals: } { ch - first character in sequence; set to first char } { after sequence } { workString - string to take numbers from } function GetFileType (var name: pString): integer; forward; { Checks to see if a file exists } { } { parameters: } { name - file name to check for } { } { Returns: File type if the file exists, or -1 if the file does } { not exist (or if GetFileInfo returns an error) } function OpenFile (doInclude, default: boolean): boolean; forward; { Open a new file and start scanning it } { } { Parameters: } { doInclude - are we doing a #include? } { default - use the name ? } { } { Returns: result from GetFileName } procedure PreProcess; forward; { Handle preprocessor commands } procedure CheckConditionals; { Check that preprocessor conditionals were balanced at the end } { of an include file. } var ip: ifPtr; begin {CheckConditionals} while (ifList <> nil) and (ifList^.theFile = fileList) do begin Error(21); ip := ifList; ifList := ifList^.next; dispose(ip); end; {while} end; {CheckConditionals} function FindMacro (name: stringPtr): macroRecordPtr; { If the current token is a macro, find the macro table entry } { } { Parameters: } { name - name of the suspected macro } { } { Returns: } { Pointer to macro table entry; nil for none } label 1; var bPtr: ^macroRecordPtr; {pointer to hash bucket} mPtr: macroRecordPtr; {pointer to macro entry} begin {FindMacro} FindMacro := nil; bPtr := pointer(ord4(macros)+Hash(name)); mPtr := bPtr^; while mPtr <> nil do begin if mPtr^.name^ = name^ then begin if mPtr^.parameters = -1 then FindMacro := mPtr else if tokenList = nil then begin while charKinds[ord(ch)] in [ch_white, ch_eol] do begin if printMacroExpansions and not suppressMacroExpansions then if charKinds[ord(ch)] = ch_eol then writeln else write(ch); NextCh; end; {while} if ch = '(' then FindMacro := mPtr; end {else if} else if tokenList^.token.kind = lparench then FindMacro := mPtr; goto 1; end; {if} mPtr := mPtr^.next; end; {while} 1: end; {FindMacro} procedure LongToPString (pstr: stringPtr; lstr: longStringPtr); { Convert a long string into a p string } { } { The long string is assumed to include a terminating null byte,} { which is not copied to the p-string. } { } { Parameters: } { pstr - pointer to the p-string } { lstr - pointer to the long string } var i: integer; {loop variable} len: integer; {string length} begin {LongToPString} len := lstr^.length-1; if len > 255 then len := 255; pstr^[0] := chr(len); for i := 1 to len do pstr^[i] := lstr^.str[i]; if len < 255 then pstr^[len+1] := chr(0); end; {LongToPString} procedure ConvertString (var str: tokenType; prefix: charStrPrefixEnum); { Convert unprefixed string literal str to a prefixed one } var sPtr: longStringPtr; {new string} i,j,k: integer; {loop counters} codePoint: ucsCodePoint; {Unicode code point} c16ptr: ^integer; {pointer to char16_t value} c32ptr: ^longint; {pointer to char32_t value} utf8: utf8Rec; {UTF-8 encoding of character} utf16: utf16Rec; {UTF-16 encoding of character} begin {ConvertString} sPtr := pointer(Malloc(str.sval^.length*4)); k := 0; for i := 1 to str.sval^.length do begin codePoint := ConvertMacRomanToUCS(str.sval^.str[i]); if prefix = prefix_u8 then begin UTF8Encode(codePoint, utf8); for j := 1 to utf8.length do begin sPtr^.str[k+1] := chr(utf8.bytes[j]); k := k+1; end; {for} end {if} else if prefix = prefix_u16 then begin UTF16Encode(codePoint, utf16); c16Ptr := pointer(@sPtr^.str[k+1]); c16Ptr^ := utf16.codeUnits[1]; k := k+2; if utf16.length = 2 then begin c16ptr := pointer(@sPtr^.str[k+1]); c16Ptr^ := utf16.codeUnits[2]; k := k+2; end; {if} end {else if} else if prefix = prefix_U32 then begin c32Ptr := pointer(@sPtr^.str[k+1]); c32Ptr^ := codePoint; k := k+4; end; {else if} end; {for} sPtr^.length := k; str.sval := sPtr; str.prefix := prefix; end; {ConvertString} procedure Merge (var tk1: tokenType; tk2: tokenType); { Merge two tokens (implementing ##) } { } { Parameters: } { tk1 - first token; result is stored here } { tk2 - second token } label 1; var class1,class2: tokenClass; {token classes} i: integer; {loop variable} kind1,kind2: tokenEnum; {token kinds} lt: tokenType; {local copy of token} str1,str2: stringPtr; {identifier strings} begin {Merge} kind1 := tk1.kind; class1 := tk1.class; kind2 := tk2.kind; class2 := tk2.class; if class1 in [identifier,reservedWord] then begin if class1 = identifier then str1 := tk1.name else str1 := @reservedWords[kind1]; if class2 = identifier then str2 := tk2.name else if class2 = reservedWord then str2 := @reservedWords[kind2] else if class2 in numericConstants then str2 := tk2.numString else if (class2 = stringConstant) and (tk2.prefix = prefix_none) then begin if str1^ = 'u' then ConvertString(tk2, prefix_u16) else if str1^ = 'U' then ConvertString(tk2, prefix_U32) else if str1^ = 'u8' then ConvertString(tk2, prefix_u8) else Error(63); tk1 := tk2; goto 1; end {else if} else begin Error(63); goto 1; end; {else} workString := concat(str1^, str2^); for i := 1 to length(workString) do if not (charKinds[ord(workString[i])] in [letter,digit]) then begin Error(63); goto 1; end; {if} lt := token; token.kind := ident; token.class := identifier; token.numString := nil; token.symbolPtr := nil; token.name := pointer(Malloc(length(workString)+1)); CopyString(pointer(token.name), @workString); tk1 := token; token := lt; goto 1; end {class1 in [identifier,reservedWord]} else if class1 in numericConstants then begin if class2 in numericConstants then str2 := tk2.numString else if class2 = identifier then str2 := tk2.name else if class2 = reservedWord then str2 := @reservedWords[kind2] else if kind2 = dotch then str2 := @'.' else begin Error(63); goto 1; end; {else} workString := concat(tk1.numString^, str2^); lt := token; DoNumber(true); tk1 := token; token := lt; goto 1; end {else if class1 in numericConstants} else if kind1 = dotch then begin if class2 in numericConstants then begin workString := concat(tk1.numString^, tk2.numString^); lt := token; DoNumber(true); tk1 := token; token := lt; goto 1; end; {if} end {else if class1 in numericConstants} else if kind1 = poundch then begin if (kind2 = poundch) and (tk1.isDigraph = tk2.isDigraph) then begin tk1.kind := poundpoundop; goto 1; end; {if} end {else if} else if kind1 = minusch then begin if kind2 = gtch then begin tk1.kind := minusgtop; goto 1; end {if} else if kind2 = minusch then begin tk1.kind := minusminusop; goto 1; end {else if} else if kind2 = eqch then begin tk1.kind := minuseqop; goto 1; end; {else if} end {else if} else if kind1 = plusch then begin if kind2 = plusch then begin tk1.kind := plusplusop; goto 1; end {else if} else if kind2 = eqch then begin tk1.kind := pluseqop; goto 1; end; {else if} end {else if} else if kind1 = ltch then begin if kind2 = ltch then begin tk1.kind := ltltop; goto 1; end {if} else if kind2 = lteqop then begin tk1.kind := ltlteqop; goto 1; end {else if} else if kind2 = eqch then begin tk1.kind := lteqop; goto 1; end {else if} else if kind2 = colonch then begin tk1.kind := lbrackch; tk1.isDigraph := true; goto 1; end {else if} else if kind2 = percentch then begin tk1.kind := lbracech; tk1.isDigraph := true; goto 1; end; {else if} end {else if} else if kind1 = ltltop then begin if kind2 = eqch then begin tk1.kind := ltlteqop; goto 1; end; {if} end {else if} else if kind1 = gtch then begin if kind2 = gtch then begin tk1.kind := gtgtop; goto 1; end {if} else if kind2 = gteqop then begin tk1.kind := gtgteqop; goto 1; end {else if} else if kind2 = eqch then begin tk1.kind := gteqop; goto 1; end; {else if} end {else if} else if kind1 = gtgtop then begin if kind2 = eqch then begin tk1.kind := gtgteqop; goto 1; end; {if} end {else if} else if kind1 = eqch then begin if kind2 = eqch then begin tk1.kind := eqeqop; goto 1; end; {if} end {else if} else if kind1 = excch then begin if kind2 = eqch then begin tk1.kind := exceqop; goto 1; end; {if} end {else if} else if kind1 = andch then begin if kind2 = andch then begin tk1.kind := andandop; goto 1; end {if} else if kind2 = eqch then begin tk1.kind := andeqop; goto 1; end; {else if} end {else if} else if kind1 = barch then begin if kind2 = barch then begin tk1.kind := barbarop; goto 1; end {if} else if kind2 = eqch then begin tk1.kind := bareqop; goto 1; end; {else if} end {else if} else if kind1 = percentch then begin if kind2 = eqch then begin tk1.kind := percenteqop; goto 1; end {if} else if kind2 = gtch then begin tk1.kind := rbracech; tk1.isDigraph := true; goto 1; end {else if} else if kind2 = colonch then begin tk1.kind := poundch; tk1.isDigraph := true; goto 1; end; {else if} end {else if} else if kind1 = carotch then begin if kind2 = eqch then begin tk1.kind := caroteqop; goto 1; end; {if} end {else if} else if kind1 = asteriskch then begin if kind2 = eqch then begin tk1.kind := asteriskeqop; goto 1; end; {if} end {else if} else if kind1 = slashch then begin if kind2 = eqch then begin tk1.kind := slasheqop; goto 1; end; {if} end {else if} else if kind1 = colonch then begin if kind2 = gtch then begin tk1.kind := rbrackch; tk1.isDigraph := true; goto 1; end; {if} end; {else if} Error(63); 1: end; {Merge} procedure MergeStrings (var tk1: tokenType; tk2: tokenType); { Merge two string constant tokens } { } { Parameters: } { tk1 - first token; result is stored here } { tk2 - second token } var cp: longstringPtr; {pointer to work string} i: integer; {loop variable} len,len1: integer; {length of strings} lt: tokenType; {local copy of token} elementType: typePtr; {string element type} begin {MergeStrings} if tk1.prefix = tk2.prefix then {OK - nothing to do} else if tk1.prefix = prefix_none then ConvertString(tk1, tk2.prefix) else if tk2.prefix = prefix_none then ConvertString(tk2, tk1.prefix) else Error(166); elementType := StringType(tk1.prefix)^.aType; len1 := tk1.sval^.length - ord(elementType^.size); len := len1+tk2.sval^.length; cp := pointer(Malloc(len+2)); for i := 1 to len1 do cp^.str[i] := tk1.sval^.str[i]; for i := 1 to len-len1 do cp^.str[i+len1] := tk2.sval^.str[i]; cp^.length := len; if tk1.ispstring then cp^.str[1] := chr(len-2); tk1.sval := cp; end; {MergeStrings} procedure BuildStringToken (cp: ptr; len: integer; rawSourceCode: boolean); { Create a string token from a string } { } { Used to stringize macros. } { } { Parameters: } { cp - pointer to the first character } { len - number of characters in the string } { rawSourceCode - process trigraphs & line continuations? } label 1; var i: integer; {loop variable} ch: char; {work character} begin {BuildStringToken} token.kind := stringconst; token.class := stringConstant; token.ispstring := false; token.sval := pointer(GMalloc(len+3)); token.prefix := prefix_none; if rawSourceCode then begin i := 1; 1: while i <= len do begin ch := chr(cp^); if ch = '?' then {handle trigraphs} if i < len-1 then if chr(ptr(ord4(cp)+1)^) = '?' then if chr(ptr(ord4(cp)+2)^) in ['=','(','/',')','''','<','!','>','-'] then begin case chr(ptr(ord4(cp)+2)^) of '(': ch := '['; '<': ch := '{'; '/': ch := '\'; '''': ch := '^'; '=': ch := '#'; ')': ch := ']'; '>': ch := '}'; '!': ch := '|'; '-': ch := '~'; end; {case} len := len-2; cp := pointer(ord4(cp)+2); end; {if} if ch = '\' then {handle line continuations} if i < len then if charKinds[ptr(ord4(cp)+1)^] = ch_eol then begin if i < len-1 then if ptr(ord4(cp)+2)^ in [$06,$07] then begin len := len-1; {skip debugger characters} cp := pointer(ord4(cp)+1); end; {if} len := len-2; cp := pointer(ord4(cp)+2); goto 1; end; token.sval^.str[i] := ch; cp := pointer(ord4(cp)+1); i := i+1; end; {while} end {if} else for i := 1 to len do begin token.sval^.str[i] := chr(cp^); cp := pointer(ord4(cp)+1); end; {for} token.sval^.str[len+1] := chr(0); token.sval^.length := len+1; PutBackToken(token, true, false); end; {BuildStringToken} procedure DoInclude (default: boolean); { #include } { } { Parameters: } { default - open ? } var fp: filePtr; {pointer to an include file} begin {DoInclude} new(fp); {get a file record for the current file} fp^.next := fileList; fileList := fp; fp^.name := includeFileGS; fp^.sname := sourceFileGS; if default then fp^.lineNumber := lineNumber else fp^.lineNumber := lineNumber+1; if OpenFile(true, default) then begin {open a new file and proceed from there} lineNumber := 1; if ifList <> nil then if fp^.next = nil then TermHeader; StartInclude(@includeFileGS); end {if} else begin {handle a file name error} fileList := fp^.next; dispose(fp); end; {else} end; {DoInclude} procedure FakeInclude(buf: ptr; offset, length: longint; prevCh: char); { Set up to process tokens from a buffer in memory, treating it } { similarly to an included file. } { } { Parameters: } { buf - the buffer } { offset - offset in buffer to start tokenizing from } { length - length of buffer } { prevCh - character considered to be the previous char } var fp: filePtr; {pointer to an include file record} begin new(fp); {get a file record for the current file} fp^.next := fileList; fileList := fp; fp^.name := includeFileGS; fp^.sname := sourceFileGS; fp^.lineNumber := lineNumber; fp^.disp := ord4(currentChPtr)-ord4(bofPtr); needWriteLine := false; bofPtr := buf; chPtr := ptr(ord4(buf)+offset); {set the start, end pointers} eofPtr := pointer(ord4(bofPtr)+length); firstPtr := bofPtr; {first char in line} ch := prevCh; {set the initial character} currentChPtr := buf; doingFakeFile := true; end; procedure Do_Pragma (str: tokenType); { Handle a _Pragma(...) preprocessing operator } { } { Parameters: } { str - the argument to _Pragma (a stringconst token) } var lfirstPtr: ptr; {local copy of firstPtr} lSuppressMacroExpansions: boolean; {local copy of suppressMacroExpansions} buf: longStringPtr; {buffer to hold #pragma directive} i: 0..maxint; {index variable} c8ptr: ^byte; {pointer to 8-bit char in input string} c16ptr: ^integer; {pointer to char16_t in input string} c32ptr: ^longint; {pointer to char32_t in input string} endptr: ptr; {pointer to end of input string} ch: integer; procedure PutChar (ch: integer); { write string constant representation of ch to buf } begin {PutChar} if ch < 0 then Error(146) else if chr(ch) in [chr(HT),' '..'~',chr($80)..chr($ff)] then begin if i > longstringlen then Error(90) else begin buf^.str[i] := chr(ch); i := i+1; end; {else} end {else if} else if ch in [ALERT,BS,FF,NEWLINE,RETURN,VT] then begin if i > longstringlen-1 then Error(90) else begin buf^.str[i] := '\'; case ch of ALERT: buf^.str[i+1] := 'a'; BS: buf^.str[i+1] := 'b'; FF: buf^.str[i+1] := 'f'; NEWLINE: buf^.str[i+1] := 'n'; RETURN: buf^.str[i+1] := 'r'; VT: buf^.str[i+1] := 'v'; end; {case} i := i+2; end; {else} end {else if} else begin if i > longstringlen-3 then Error(90) else begin buf^.str[i] := '\'; buf^.str[i+1] := chr(((ch >> 6) & $0007) + ord('0')); buf^.str[i+2] := chr(((ch >> 3) & $0007) + ord('0')); buf^.str[i+3] := chr(( ch & $0007) + ord('0')); i := i+4; end; {else} end; {else} end; {PutChar} begin {Do_Pragma} new(buf); {build a buffer with #pragma directive} buf^.str := '#pragma '; i := 9; case str.prefix of prefix_none, prefix_u8: begin c8ptr := pointer(@str.sval^.str[1]); endPtr := pointer(ord4(c8ptr) + str.sval^.length - 1); while ord4(c8ptr) < ord4(endPtr) do begin ch := c8ptr^; if (str.prefix = prefix_u8) and (ch > 127) then ch := -1; PutChar(ch); c8ptr := pointer(ord4(c8ptr)+1); end; {while} end; prefix_u16: begin c16ptr := pointer(@str.sval^.str[1]); endPtr := pointer(ord4(c16ptr) + str.sval^.length - 2); while ord4(c16ptr) < ord4(endPtr) do begin ch := ConvertUCSToMacRoman(ord4(c16ptr^)); PutChar(ch); c16ptr := pointer(ord4(c16ptr)+2); end; {while} end; prefix_u32: begin c32ptr := pointer(@str.sval^.str[1]); endPtr := pointer(ord4(c32ptr) + str.sval^.length - 4); while ord4(c32ptr) < ord4(endPtr) do begin ch := ConvertUCSToMacRoman(c32ptr^); PutChar(ch); c32ptr := pointer(ord4(c32ptr)+4); end; {while} end; end; {case} buf^.length := i-1; lfirstPtr := firstPtr; {include tokens from the buffer} WriteLine; wroteLine := false; FakeInclude(@buf^.str[1], 1, buf^.length, ' '); lSuppressMacroExpansions := suppressMacroExpansions; suppressMacroExpansions := true; PreProcess; suppressMacroExpansions := lSuppressMacroExpansions; wroteLine := true; firstPtr := lfirstPtr; dispose(buf); end; {Do_Pragma} procedure Expand (macro: macroRecordPtr); { Expand a preprocessor macro } { } { Expands a preprocessor macro by putting tokens from the macro } { definition into the scanner's putback buffer. } { } { Parameters: } { macro - pointer to the macro to expand } { } { Globals: } { macroList - scanner putback buffer } type parameterPtr = ^parameterRecord; parameterRecord = record {parameter list element} next: parameterPtr; {next parameter} tokens: tokenListRecordPtr; {token list} tokenStart,tokenEnd: ptr; {source pointers (for stringization)} end; var bPtr: ^macroRecordPtr; {pointer to hash bucket} done: boolean; {used to check for loop termination} expandEnabled: boolean; {can the token be expanded?} i: integer; {loop counter} inhibit: boolean; {inhibit parameter expansion?} lexpandMacros: boolean; {local copy of expandMacros} lPreprocessing: boolean; {local copy of preprocessing} lSuppressMacroExpansions: boolean; {local copy of suppressMacroExpansions} mPtr: macroRecordPtr; {for checking list of macros} newParm: parameterPtr; {for building a new parameter entry} tlPtr, tPtr, tcPtr, lastPtr: tokenListRecordPtr; {work pointers} paramCount: integer; {# of parameters found in the invocation} parenCount: integer; {paren count; for balancing parenthesis} parmEnd: parameterPtr; {for building a parameter list} parms: parameterPtr; {points to the list of parameters} pptr: parameterPtr; {work pointer for tracing parms list} sp: longStringPtr; {work pointer} stringization: boolean; {are we stringizing a parameter?} endParmTokens: tokenSet; {tokens that end a parameter} begin {Expand} lSuppressMacroExpansions := suppressMacroExpansions; {inhibit token printing} suppressMacroExpansions := true; lexpandMacros := expandMacros; {prevent expansion of parameters} expandMacros := false; saveNumber := true; {save numeric strings} parms := nil; {no parms so far} if macro^.parameters >= 0 then begin {find the values of the parameters} NextToken; {get the '(' (we hope...)} if token.kind = lparench then begin lPreprocessing := preprocessing; preprocessing := true; NextToken; {skip the '('} paramCount := 0; {process the parameters} parmEnd := nil; endParmTokens := [rparench,commach]; repeat done := true; parenCount := 0; paramCount := paramCount+1; if macro^.isVarargs then if paramCount = macro^.parameters then endParmTokens := endParmTokens - [commach]; new(newParm); newParm^.next := nil; if parmEnd = nil then parms := newParm else parmEnd^.next := newParm; parmEnd := newParm; newParm^.tokens := nil; while (token.kind <> eofsy) and ((parenCount <> 0) or (not (token.kind in endParmTokens))) do begin new(tPtr); tPtr^.next := newParm^.tokens; newParm^.tokens := tPtr; tPtr^.token := token; tPtr^.tokenStart := tokenStart; tPtr^.tokenEnd := tokenEnd; tPtr^.expandEnabled := tokenExpandEnabled; if token.kind = lparench then parenCount := parenCount+1 else if token.kind = rparench then parenCount := parenCount-1; NextToken; end; {while} if token.kind = commach then begin NextToken; done := false; end; {if} until done; if paramCount = 1 then if macro^.parameters = 0 then if parms^.tokens = nil then paramCount := 0; if paramCount <> macro^.parameters then Error(14); if token.kind <> rparench then begin {insist on a closing ')'} if not gettingFileName then {put back the source stream token} PutBackToken(token, true, false); Error(12); end; {if} preprocessing := lPreprocessing; end {if} else begin Error(13); if not gettingFileName then {put back the source stream token} PutBackToken(token, true, false); end; {else} end; {if} if macro^.readOnly then begin {handle special macros} case macro^.algorithm of 1: begin {__LINE__} if lineNumber <= maxint then begin token.kind := intconst; token.class := intconstant; token.ival := ord(lineNumber); end {if} else begin token.kind := longconst; token.class := longconstant; token.lval := lineNumber; end; {else} token.numString := @lineStr; lineStr := cnvis(lineNumber); tokenStart := @lineStr[1]; tokenEnd := pointer(ord4(tokenStart)+length(lineStr)); end; 2: begin {__FILE__} token.kind := stringConst; token.class := stringConstant; token.ispstring := false; token.prefix := prefix_none; sp := pointer(Malloc(3+sourceFileGS.theString.size)); sp^.length := sourceFileGS.theString.size+1; for i := 1 to sourceFileGS.theString.size do sp^.str[i] := sourceFileGS.theString.theString[i]; sp^.str[i+1] := chr(0); token.sval := sp; tokenStart := @sp^.str; tokenEnd := pointer(ord4(tokenStart)+sp^.length); end; 3: begin {__DATE__} token.kind := stringConst; token.class := stringConstant; token.ispstring := false; token.prefix := prefix_none; token.sval := dateStr; tokenStart := @dateStr^.str; tokenEnd := pointer(ord4(tokenStart)+dateStr^.length); TermHeader; {Don't save stale value in sym file} end; 4: begin {__TIME__} token.kind := stringConst; token.class := stringConstant; token.ispstring := false; token.prefix := prefix_none; token.sval := timeStr; tokenStart := @timeStr^.str; tokenEnd := pointer(ord4(tokenStart)+timeStr^.length); TermHeader; {Don't save stale value in sym file} end; 5: begin {__STDC__} token.kind := intConst; {__ORCAC__} token.numString := @oneStr; {__STDC_NO_...__} token.class := intConstant; {__ORCAC_HAS_LONG_LONG__} token.ival := 1; {__STDC_UTF_16__} oneStr := '1'; {__STDC_UTF_32__} tokenStart := @oneStr[1]; tokenEnd := pointer(ord4(tokenStart)+1); end; 6: begin {__VERSION__} token.kind := stringConst; token.class := stringConstant; token.ispstring := false; token.prefix := prefix_none; token.sval := versionStrL; tokenStart := @versionStrL^.str; tokenEnd := pointer(ord4(tokenStart)+versionStrL^.length); end; 7: begin {__STDC_HOSTED__} if isNewDeskAcc or isClassicDeskAcc or isCDev or isNBA or isXCMD then begin token.kind := intConst; token.numString := @zeroStr; token.class := intConstant; token.ival := 0; zeroStr := '0'; tokenStart := @zeroStr[1]; tokenEnd := pointer(ord4(tokenStart)+1); end {if} else begin token.kind := intConst; token.numString := @oneStr; token.class := intConstant; token.ival := 1; oneStr := '1'; tokenStart := @oneStr[1]; tokenEnd := pointer(ord4(tokenStart)+1); end {else} end; 9: begin {__STDC_VERSION__} token.kind := longconst; token.class := longconstant; token.lval := stdcVersion[cStd]; token.numString := @stdcVersionStr; stdcVersionStr := concat(cnvis(token.lval),'L'); tokenStart := @stdcVersionStr[1]; tokenEnd := pointer(ord4(tokenStart)+length(stdcVersionStr)); end; 8: begin {_Pragma pseudo-macro} if (parms <> nil) and (parms^.tokens <> nil) and (parms^.tokens^.token.kind = stringconst) and (parms^.tokens^.next = nil) then Do_Pragma(parms^.tokens^.token) else Error(179); end; otherwise: Error(57); end; {case} if macro^.algorithm <> 8 then {if not _Pragma} PutBackToken(token, true, false); end {if} else begin {expand the macro} tlPtr := macro^.tokens; {place the tokens in the buffer...} lastPtr := nil; while tlPtr <> nil do begin if tlPtr^.token.kind = macroParm then begin pptr := parms; {find the correct parameter} for i := 1 to tlPtr^.token.pnum do if pptr <> nil then pptr := pptr^.next; if pptr <> nil then begin {see if the macro is stringized} stringization := false; if tlPtr^.next <> nil then stringization := tlPtr^.next^.token.kind = poundch; {handle macro stringization} if stringization then begin tcPtr := pptr^.tokens; if tcPtr = nil then BuildStringToken(nil, 0, false); while tcPtr <> nil do begin if tcPtr^.token.kind = stringconst then begin BuildStringToken(@quoteStr[1], 1, false); BuildStringToken(@tcPtr^.token.sval^.str, tcPtr^.token.sval^.length-1, false); BuildStringToken(@quoteStr[1], 1, false); end {if} else begin if tcPtr <> pptr^.tokens then if charKinds[tcPtr^.tokenEnd^] = ch_white then BuildStringToken(@spaceStr[1], 1, false); BuildStringToken(tcPtr^.tokenStart, ord(ord4(tcPtr^.tokenEnd)-ord4(tcPtr^.tokenStart)), true); {hack because stringconst may not have proper tokenEnd} if tcPtr^.next <> nil then if tcPtr^.next^.token.kind = stringconst then if charKinds[ptr(ord4(tcPtr^.tokenStart)-1)^] = ch_white then BuildStringToken(@spaceStr[1], 1, false); end; tcPtr := tcPtr^.next; end; {while} tlPtr := tlPtr^.next; end {if} {expand a macro parameter} else begin tcPtr := pptr^.tokens; if tcPtr = nil then begin if tlPtr^.next <> nil then if tlPtr^.next^.token.kind = poundpoundop then tlPtr^.next := tlPtr^.next^.next; if lastPtr <> nil then if lastPtr^.token.kind = poundpoundop then if tokenList <> nil then if tokenList^.token.kind = poundpoundop then tokenList := tokenList^.next; end; {if} while tcPtr <> nil do begin tokenStart := tcPtr^.tokenStart; tokenEnd := tcPtr^.tokenEnd; if tcPtr^.token.kind = ident then begin mPtr := FindMacro(tcPtr^.token.name); inhibit := false; if tlPtr^.next <> nil then if tlPtr^.next^.token.kind = poundpoundop then inhibit := true; if lastPtr <> nil then if lastPtr^.token.kind = poundpoundop then inhibit := true; if not tcPtr^.expandEnabled then inhibit := true; if tcPtr = pptr^.tokens then if (mPtr <> nil) and (mPtr^.parameters > 0) then inhibit := true; if (mPtr <> nil) and (not inhibit) then Expand(mPtr) else begin expandEnabled := tcPtr^.expandEnabled; if expandEnabled then if tcPtr^.token.name^ = macro^.name^ then expandEnabled := false; PutBackToken(tcPtr^.token, expandEnabled, false); end; {else} end {if} else PutBackToken(tcPtr^.token, true, false); tcPtr := tcPtr^.next; end; {while} end; {else} end; {if pptr <> nil} end {if tlPtr^.token.kind = macroParm} else begin {place an explicit parm in the token list} expandEnabled := true; if tlPtr^.token.kind = ident then if tlPtr^.token.name^ = macro^.name^ then expandEnabled := false; tokenStart := tlPtr^.tokenStart; tokenEnd := tlPtr^.tokenEnd; PutBackToken(tlPtr^.token, expandEnabled, false); end; {else} lastPtr := tlPtr; tlPtr := tlPtr^.next; end; {while} end; {else} while parms <> nil do begin {dispose of the parameter list} tPtr := parms^.tokens; while tPtr <> nil do begin tlPtr := tPtr^.next; dispose(tPtr); tPtr := tlPtr; end; {while} parmEnd := parms^.next; dispose(parms); parms := parmEnd; end; {while} expandMacros := lexpandMacros; {restore the flags} suppressMacroExpansions := lSuppressMacroExpansions; saveNumber := false; {stop saving numeric strings} end; {Expand} function GetFileName (mustExist: boolean): boolean; { Read a file name from a directive line } { } { parameters: } { mustExist - should we look for an existing file? } { } { Returns true if successful, false if not. } { } { Note: The file name is placed in workString. } const SRC = $B0; {source file type} var i,j: integer; {string index & loop vars} tempString: stringPtr; procedure Expand (var name: pString); { Expands a name to a full pathname } { } { parameters: } { name - file name to expand } var exRec: expandDevicesDCBGS; {expand devices} begin {Expand} exRec.pcount := 2; new(exRec.inName); exRec.inName^.theString := name; exRec.inName^.size := length(name); new(exRec.outName); exRec.outName^.maxSize := maxPath+4; ExpandDevicesGS(exRec); if toolerror = 0 then with exRec.outName^.theString do begin if size < maxPath then theString[size+1] := chr(0); name := theString; end; {with} dispose(exRec.inName); dispose(exRec.outName); end; {Expand} function GetLibraryName (var name: pstring): boolean; { See if a library pathname is available } { } { Parameters: } { name - file name; set to pathname if result is true } { } { Returns: True if a name is available, else false } var lname: pString; {local copy of name} begin {GetLibraryName} lname := concat('13:ORCACDefs:', name); Expand(lname); if GetFileType(lname) = SRC then begin name := lname; GetLibraryName := true; end {if} else GetLibraryName := false; end; {GetLibraryName} function GetLocalName (var name: pstring): boolean; { See if a local pathname is available } { } { Parameters: } { name - file name; set to pathname if result is true } { } { Returns: True if a name is available, else false } var lname: pstring; {work string} pp: pathRecordPtr; {used to trace the path list} begin {GetLocalName} lname := name; Expand(lname); if GetFileType(lname) = SRC then begin GetLocalName := true; name := lname; end {if} else begin GetLocalName := false; pp := pathList; while pp <> nil do begin lname := concat(pp^.path^, name); if GetFileType(lname) = SRC then begin GetLocalName := true; name := lname; Expand(name); pp := nil; end {if} else pp := pp^.next; end; {while} end; {else} end; {GetLocalName} procedure MakeLibraryName (var name: pstring); { Create the library path name for an error message } { } { Parameters: } { name - file name; set to pathname } begin {MakeLibraryName} name := concat('13:ORCACDefs:', name); Expand(name); end; {MakeLibraryName} procedure MakeLocalName (var name: pstring); { Create the local path name for an error message } { } { Parameters: } { name - file name; set to pathname } begin {MakeLocalName} Expand(name); end; {MakeLocalName} begin {GetFileName} GetFileName := true; gettingFileName := true; {in GetFileName} while charKinds[ord(ch)] = ch_white do {finish processing the current line} NextCh; if ch = '<' then begin {process a library file...} NextToken; {skip the '<'} token.kind := stringconst; {convert a <> style name to a string} token.class := stringConstant; token.ispstring := false; token.prefix := prefix_none; i := 0; while not (charKinds[ord(ch)] in [ch_eol,ch_gt]) do begin i := i+1; if (i = maxLine) then begin Error(16); GetFileName := false; i := 0; end; workString[i] := ch; NextCh; end; {while} workString[0] := chr(i); CheckDelimiters(workString); if mustExist then begin if not GetLibraryName(workString) then if not GetLocalName(workString) then MakeLibraryName(workString); end {if} else MakeLibraryName(workString); if ch = '>' then NextCh else begin Error(15); GetFileName := false; end; {else} end {if} else begin {handle file names that are strings or macro expansions} expandMacros := true; {allow macros to be used in the name} NextToken; {skip the command name} if (token.kind = stringConst) and (token.prefix = prefix_none) then begin LongToPString(@workString, token.sval); CheckDelimiters(workString); if mustExist then begin if not GetLocalName(workString) then if not GetLibraryName(workString) then MakeLocalName(workString); end {if} else MakeLocalName(workString); end {if} else if token.kind = ltch then begin {expand a macro to create a form name} NextToken; new(tempString); tempString^[0] := chr(0); while (token.class in ([reservedWord] + numericConstants)) or (token.kind in [dotch,ident]) do begin if token.kind = ident then tempString^ := concat(tempString^, token.name^) else if token.kind = dotch then tempString^ := concat(tempString^, '.') else if token.class = reservedWord then tempString^ := concat(tempString^, reservedWords[token.kind]) else {if token.class in numericConstants then} tempString^ := concat(tempString^, token.numstring^); NextToken; end; {while} workString := tempString^; dispose(tempString); CheckDelimiters(workString); if mustExist then begin if not GetLibraryName(workString) then if not GetLocalName(workString) then MakeLibraryName(workString); end {if} else MakeLibraryName(workString); if token.kind <> gtch then begin Error(15); GetFileName := false; end; {if} end {else if} else begin Error(59); GetFileName := false; end; {else} end; {else} while charKinds[ord(ch)] = ch_white {finish processing the current line} do NextCh; if charKinds[ord(ch)] <> ch_eol then {check for extra stuff on the line} begin Error(11); GetFileName := false; end; {if} gettingFileName := false; {not in GetFileName} end; {GetFileName} function GetFileType {var name: pString): integer}; { Checks to see if a file exists } { } { parameters: } { name - file name to check for } { } { Returns: File type if the file exists, or -1 if the file does } { not exist (or if GetFileInfo returns an error) } var pathname: gsosInString; {GS/OS style name} giRec: getFileInfoOSDCB; {GetFileInfo record} begin {GetFileType} giRec.pcount := 3; giRec.pathName := @pathname; pathname.theString := name; pathname.size := length(name); GetFileInfoGS(giRec); if ToolError = 0 then GetFileType := giRec.fileType else GetFileType := -1; end; {GetFileType} function OpenFile {doInclude, default: boolean): boolean}; { Open a new file and start scanning it } { } { Parameters: } { doInclude - are we doing a #include? } { default - use the name ? } { } { Returns: result from GetFileName } var gotName: boolean; {did we get a file name?} begin {OpenFile} if default then begin {get the file name} if customDefaultName <> nil then workString := customDefaultName^ else workString := defaultName; gotName := true; end {if} else gotName := GetFileName(true); if gotName then begin {read the file name from the line} OpenFile := true; {we opened it} if doInclude and progress then {note our progress} writeln('Including ', workString); WriteLine; {write the source line} wroteLine := false; lineNumber := lineNumber+1; firstPtr := pointer(ord4(chPtr)+2); needWriteLine := false; if doInclude then {set the disp in the file} fileList^.disp := ord4(chPtr)-ord4(bofPtr); with ffDCBGS do begin {purge the source file} pCount := 5; action := 7; pathName := @includeFileGS.theString; end; {with} FastFileGS(ffDCBGS); oldincludeFileGS := includeFileGS; {set the file name} includeFileGS.theString.theString := workString; includeFileGS.theString.size := length(workString); sourceFileGS := includeFileGS; changedSourceFile := true; ReadFile; {read the file} chPtr := bofPtr; {set the start, end pointers} currentChPtr := bofPtr; eofPtr := pointer(ord4(bofPtr)+ffDCBGS.fileLength); firstPtr := chPtr; {first char in line} ch := chr(RETURN); {set the initial character} if languageNumber <> long(ffDCBGS.auxType).lsw then begin switchLanguages := true; {switch languages} chPtr := eofPtr; if doInclude then TermError(7); if fileList <> nil then TermError(8); end; {if} end {if} else OpenFile := false; {we failed to opened it} end; {OpenFile} procedure PreProcess; { Handle preprocessor commands } label 2; var lSuppressMacroExpansions: boolean; {local copy of suppressMacroExpansions} lReportEOL: boolean; {local copy of reportEOL} lSaveNumber: boolean; {local copy of saveNumber} tSkipping: boolean; {temp copy of the skipping variable} val: integer; {expression value} nextLineNumber: longint; {number for next line} function Defined: boolean; { See if a macro is defined } begin {Defined} expandMacros := false; {block expansions} NextToken; {skip the command name} if token.class in [reservedWord,identifier] then begin Defined := IsDefined(token.name); {see if the macro is defined} expandMacros := true; {enable expansions} NextToken; {skip the macro name} if token.kind <> eolsy then {check for extra stuff on the line} Error(11); end {if} else Error(9); end; {Defined} procedure NumericDirective; { Process a constant expression for a directive that has a } { single number as the operand. } { } { Notes: The expression evaluator returns the value in the } { global variable expressionValue. } begin {NumericDirective} doingPPExpression := true; NextToken; {skip the directive name} Expression(preprocessorExpression, [eolsy]); {evaluate the expression} doingPPExpression := false; end; {NumericDirective} procedure OnOffSwitch; { Process an of-off-switch, as used in standard pragmas. } var flaggedError: boolean; {did we flag an error already?} begin {OnOffSwitch} onOffValue := off; flaggedError := false; NextToken; {skip the standard pragma name} if token.kind = typedef then token.kind := ident; if token.kind <> ident then begin Error(157); flaggedError := true; end {if} else if token.name^ = 'ON' then onOffValue := on else if token.name^ = 'OFF' then onOffValue := off else if token.name^ = 'DEFAULT' then onOffValue := default else begin Error(157); flaggedError := true; end; {else} if not flaggedError then begin NextToken; if token.kind <> eolsy then Error(11); end; {if} end; {OnOffSwitch} procedure ProcessIf (skip: boolean); { handle the processing for #if, #ifdef and #ifndef } { } { parameter: } { skip - should we skip to the #else } var ip: ifPtr; {used to create a new if record} begin {ProcessIf} if token.kind <> eolsy then {check for extra stuff on the line} if not tSkipping then Error(11); new(ip); {create a new if record} ip^.next := ifList; ifList := ip; if tSkipping then {set the status of the record} ip^.status := skippingToEndif else if skip then ip^.status := skippingToElse else ip^.status := processing; ip^.elseFound := false; {no else has been found...} ip^.theFile := fileList; {record the file containing the #if} tSkipping := ip^.status <> processing; {decide if we should be skipping} end; {ProcessIf} procedure DoAppend; { #append } var tbool: boolean; {temp boolean} begin {DoAppend} TermHeader; tbool := OpenFile(false, false); {open a new file and proceed from there} lineNumber := 1; end; {DoAppend} procedure DoCDA; { #pragma cda NAME START SHUTDOWN } begin {DoCDA} FlagPragmas(p_cda); isClassicDeskAcc := true; NextToken; {skip the command name} if token.kind = stringconst then {get the name} begin LongToPString(@menuLine, token.sval); NextToken; end {if} else begin isClassicDeskAcc := false; Error(83); end; {else} if token.kind = ident then begin {get the start name} openName := token.name; NextToken; end {if} else begin isClassicDeskAcc := false; Error(9); end; {else} if token.kind = ident then begin {get the shutdown name} closeName := token.name; NextToken; end {if} else begin isClassicDeskAcc := false; Error(9); end; {else} if token.kind <> eolsy then {make sure there is nothing else on the line} Error(11); end; {DoCDA} procedure DoCDev; { #pragma cdev START } begin {DoCDev} FlagPragmas(p_cdev); isCDev := true; NextToken; {skip the command name} if token.kind = ident then begin {get the start name} openName := token.name; NextToken; end {if} else begin isCDev := false; Error(9); end; {else} if token.kind <> eolsy then {make sure there is nothing else on the line} Error(11); end; {DoCDev} procedure DoDefine; { #define } { } { The way parameters are handled is a bit obtuse. Parameters } { have their own token type, with the token having an } { associated parameter number, pnum. Pnum is the number of } { parameters to skip to get to the parameter in the parameter } { list. } { } { In the macro record, parameters indicates how many } { parameters there are in the definition. -1 indicates that } { there is no parameter list, while 0 indicates that a list } { must exist, but that there are no parameters in the list. } label 1,2,3; type stringListPtr = ^stringList; stringList = record {for the parameter list} next: stringListPtr; str: pString; end; var bPtr: ^macroRecordPtr; {pointer to head of hash bucket} done: boolean; {used to test for loop termination} i: integer; {loop variable} mf: macroRecordPtr; {pointer to existing macro record} mPtr: macroRecordPtr; {pointer to new macro record} np: stringListPtr; {new parameter} parameterList: stringListPtr; {list of parameter names} parameters: integer; {local copy of mPtr^.parameters} ple: stringListPtr; {pointer to the last element in parameterList} pnum: integer; {for counting parameters} tPtr,tk1,tk2: tokenListRecordPtr; {pointer to a token} begin {DoDefine} expandMacros := false; {block expansions} saveNumber := true; {save characters in numeric tokens} parameterList := nil; {no parameters yet} NextToken; {get the token name} {convert reserved words to identifiers} if token.class = reservedWord then begin token.name := @reservedWords[token.kind]; token.kind := ident; token.class := identifier; end {if} else if token.kind = typedef then token.kind := ident; if token.kind = ident then begin {we have a name...} mPtr := pointer(GMalloc(sizeof(macroRecord))); {create a macro record} mPtr^.name := token.name; {record the name} mPtr^.saved := false; {not saved in symbol file} mPtr^.tokens := nil; {no tokens yet} mPtr^.isVarargs := false; {not varargs (yet)} if ch = '(' then begin {scan the parameter list...} NextToken; {done with the name token...} NextToken; {skip the opening '('} parameters := 0; {no parameters yet} ple := nil; repeat {get the parameter names} done := true; if token.class = reservedWord then begin token.name := @reservedWords[token.kind]; token.kind := ident; token.class := identifier; end {if} else if token.kind = typedef then token.kind := ident; if token.kind = ident then begin new(np); np^.next := nil; np^.str := token.name^; if ple = nil then parameterList := np else ple^.next := np; ple := parameterList; while ple <> np do begin if ple^.str = token.name^ then begin np^.str[1] := '?'; Error(175); end; {if} ple := ple^.next; end; {while} NextToken; parameters := parameters+1; if token.kind = commach then begin NextToken; done := false; end; {if} end {if} else if token.kind = dotdotdotsy then begin NextToken; new(np); np^.next := nil; np^.str := '__VA_ARGS__'; if ple = nil then parameterList := np else ple^.next := np; ple := np; parameters := parameters + 1; mPtr^.isVarargs := true; end; {else} until done; if token.kind = rparench then {insist on a matching ')'} NextToken else Error(12); end {if} else begin if (lint & lintC99Syntax) <> 0 then if not (charKinds[ord(ch)] in [ch_white,ch_eol,ch_eof]) then Error(170); parameters := -1; {no parameter list exists} NextToken; {done with the name token...} end; {else} mPtr^.parameters := parameters; {record the # of parameters} if token.kind = poundpoundop then Error(172); tPtr := nil; while token.kind <> eolsy do begin {place tokens in the replace list...} if token.class = reservedWord then begin token.name := @reservedWords[token.kind]; token.kind := ident; token.class := identifier; end {if} else if token.kind = typedef then token.kind := ident; if token.kind = ident then begin {special handling for identifiers} np := parameterList; {change parameters to macroParm} pnum := 0; while np <> nil do begin if np^.str = token.name^ then begin token.kind := macroParm; token.class := macroParameter; token.pnum := pnum; goto 1; end; {if} pnum := pnum+1; np := np^.next; end; {while} if token.name^ = '__VA_ARGS__' then Error(174); end; {if} if parameters >= 0 then if tPtr <> nil then if tPtr^.token.kind = poundch then Error(173); 1: tPtr := pointer(GMalloc(sizeof(tokenListRecord))); tPtr^.next := mPtr^.tokens; mPtr^.tokens := tPtr; tPtr^.token := token; tPtr^.tokenStart := tokenStart; tPtr^.tokenEnd := tokenEnd; tPtr^.expandEnabled := true; NextToken; end; {while} if tPtr <> nil then if (parameters >= 0) and (tPtr^.token.kind = poundch) then Error(173) else if tPtr^.token.kind = poundpoundop then if tPtr^.next <> nil then Error(172); mPtr^.readOnly := false; mPtr^.algorithm := 0; if IsDefined(mPtr^.name) then begin mf := macroFound; if mf^.readOnly then goto 3; if mf^.parameters = mPtr^.parameters then begin tk1 := mf^.tokens; tk2 := mPtr^.tokens; while (tk1 <> nil) and (tk2 <> nil) do begin if tk1^.token.kind <> tk2^.token.kind then goto 3; if tk1^.token.class = tk2^.token.class then case tk1^.token.class of reservedWord: ; reservedSymbol: if tk1^.token.isDigraph <> tk2^.token.isDigraph then if tk1^.token.kind in [lbrackch,rbrackch,lbracech, rbracech,poundch,poundpoundop] then goto 3; identifier: if tk1^.token.name^ <> tk2^.token.name^ then goto 3; intConstant: if tk1^.token.ival <> tk2^.token.ival then goto 3; longConstant: if tk1^.token.lval <> tk2^.token.lval then goto 3; longlongConstant: if (tk1^.token.qval.lo <> tk2^.token.qval.lo) or (tk1^.token.qval.hi <> tk2^.token.qval.hi) then goto 3; realConstant: if tk1^.token.rval <> tk2^.token.rval then goto 3; stringConstant: begin if tk1^.token.sval^.length <> tk2^.token.sval^.length then goto 3; if tk1^.token.ispstring <> tk2^.token.ispstring then goto 3; if tk1^.token.prefix <> tk2^.token.prefix then goto 3; for i := 1 to tk1^.token.sval^.length do if tk1^.token.sval^.str[i] <> tk2^.token.sval^.str[i] then goto 3; end; macroParameter: if tk1^.token.pnum <> tk2^.token.pnum then goto 3; otherwise: Error(57); end; {case} tk1 := tk1^.next; tk2 := tk2^.next; end; {while} if (tk1 = nil) and (tk2 = nil) then goto 2; end; {if} 3: Error(5); goto 2; end; {if} {insert the macro in the macro list} bPtr := pointer(ord4(macros) + Hash(mPtr^.name)); mPtr^.next := bPtr^; bPtr^ := mPtr; end {if} else Error(9); {identifier expected} 2: expandMacros := true; {enable expansions} while parameterList <> nil do begin {dump the parameter names} np := parameterList; parameterList := np^.next; dispose(np); end; {while} saveNumber := false; {stop saving numeric strings} end; {DoDefine} procedure DoElif; { #elif expression } var ip: ifPtr; {temp; for efficiency} begin {DoElif} ip := ifList; if (ip <> nil) and (ip^.theFile = fileList) then begin {decide if we should be skipping} tSkipping := ip^.status <> skippingToElse; if tSkipping then ip^.status := skippingToEndif else begin {evaluate the condition} NumericDirective; {evaluate the condition} if token.kind <> eolsy then {check for extra stuff on the line} Error(11); if expressionValue = 0 then ip^.status := skippingToElse else ip^.status := processing; tSkipping := ip^.status <> processing; {decide if we should be skipping} end; {else} end else Error(20); end; {DoElif} procedure DoElse; { #else } begin {DoElse} if (ifList <> nil) and (ifList^.theFile = fileList) then begin if ifList^.elseFound then {check for multiple elses} Error(19) else ifList^.elseFound := true; {decide if we should be skipping} tSkipping := ifList^.status <> skippingToElse; if tSkipping then {set the status} ifList^.status := skippingToEndif else ifList^.status := processing; end else Error(20); NextToken; {skip the command name} if token.kind <> eolsy then {check for extra stuff on the line} Error(11); end; {DoElse} procedure DoEndif; { #endif } var ip: ifPtr; {used to create a new if record} begin {DoEndif} if (ifList <> nil) and (ifList^.theFile = fileList) then begin ip := ifList; {remove the top if record from the list} ifList := ip^.next; dispose(ip); if ifList = nil then {decide if we should be skipping} tSkipping := false else tSkipping := ifList^.status <> processing; end {if} else Error(20); NextToken; {skip the command name} if token.kind <> eolsy then {check for extra stuff on the line} if not allowTokensAfterEndif then Error(11); end; {DoEndif} procedure DoError (isError: boolean); { #error pp-tokens(opt) } var i: integer; {loop variable} len: integer; {string length} msg: stringPtr; {error message ptr} cp: ptr; {character pointer} lFirstPtr: ptr; {local copy of firstPtr} begin {DoError} lFirstPtr := firstPtr; if isError then numErrors := numErrors+1 else TermHeader; new(msg); if isError then msg^ := '#error:' else msg^ := '#warning:'; NextToken; {skip the command name} while not (token.kind in [eolsy, eofsy]) do begin msg^ := concat(msg^, ' '); if token.kind = stringConst then begin len := token.sval^.length-1; for i := 1 to len do msg^ := concat(msg^, token.sval^.str[i]); end {if} else begin len := ord(ord4(tokenEnd) - ord4(tokenStart)); cp := tokenStart; for i := 1 to len do begin msg^ := concat(msg^, chr(cp^)); cp := pointer(ord4(cp)+1); end; {for} end; {else} NextToken; end; {while} writeln(msg^); if isError and terminalErrors then begin if enterEditor then ExitToEditor(msg, ord4(lFirstPtr)-ord4(bofPtr)) else TermError(0); end; {if} end; {DoError} procedure DoFloat; { #pragma float NUMBER NUMBER } begin {DoFloat} FlagPragmas(p_float); NextToken; if token.kind in [intconst,uintconst,ushortconst] then begin floatCard := token.ival; NextToken; end {if} else Error(18); if token.kind in [intconst,uintconst,ushortconst] then begin floatSlot := $C080 | (token.ival << 4); NextToken; end {if} else Error(18); end; {DoFloat} procedure DoKeep; { #pragma keep FILENAME } begin {DoKeep} if GetFileName(false) then begin {read the file name} FlagPragmas(p_keep); if not ignoreSymbols then if pragmaKeepFile = nil then begin new(pragmaKeepFile); pragmaKeepFile^.maxSize := maxPath + 4; pragmaKeepFile^.theString.theString := workString; pragmaKeepFile^.theString.size := length(workString); end; {if} if foundFunction then Error(17); if liDCBGS.kFlag = 0 then begin {use the old name if there is one...} liDCBGS.kFlag := 1; outFileGS.theString.theString := workString; outFileGS.theString.size := length(workString); end; {if} end; {if} end; {DoKeep} procedure DoNBA; { #pragma nba MAIN } begin {DoNBA} FlagPragmas(p_nba); isNBA := true; NextToken; {skip the command name} if token.kind = ident then begin {get the open name} openName := token.name; NextToken; end {if} else begin isNBA := false; Error(9); end; {else} if token.kind <> eolsy then {make sure there is nothing else on the line} Error(11); end; {DoNBA} procedure DoNDA; { #pragma nda OPEN CLOSE ACTION INIT PERIOD EVENTMASK MENULINE} function GetInteger: integer; { Get a signed integer constant } var isNegative: boolean; {is the value negative?} value: integer; {value to return} begin {GetInteger} isNegative := false; value := 0; if token.kind = plusch then NextToken else if token.kind = minusch then begin NextToken; isNegative := true; end; {else if} if token.kind in [intconst,uintconst,ushortconst] then begin value := token.ival; NextToken; end {if} else begin isNewDeskAcc := false; Error(18); end; {else} if isNegative then GetInteger := -value else GetInteger := value; end; {GetInteger} begin {DoNDA} FlagPragmas(p_nda); isNewDeskAcc := true; NextToken; {skip the command name} if token.kind = ident then begin {get the open name} openName := token.name; NextToken; end {if} else begin isNewDeskAcc := false; Error(9); end; {else} if token.kind = ident then begin {get the close name} closeName := token.name; NextToken; end {if} else begin isNewDeskAcc := false; Error(9); end; {else} if token.kind = ident then begin {get the action name} actionName := token.name; NextToken; end {if} else begin isNewDeskAcc := false; Error(9); end; {else} if token.kind = ident then begin {get the init name} initName := token.name; NextToken; end {if} else begin isNewDeskAcc := false; Error(9); end; {else} refreshPeriod := GetInteger; {get the period} eventMask := GetInteger; {get the event Mask} if token.kind = stringconst then {get the name} begin LongToPString(@menuLine, token.sval); NextToken; end {if} else begin isNewDeskAcc := false; Error(83); end; {else} if token.kind <> eolsy then {make sure there is nothing else on the line} Error(11); end; {DoNDA} procedure DoUndef; { #undef } label 1; var bPtr: ^macroRecordPtr; {hash bucket pointer} mPtr,lastPtr: macroRecordPtr; {work pointers} begin {DoUndef} expandMacros := false; {block expansions} NextToken; {get the token name} {convert reserved words to identifiers} if token.class = reservedWord then begin token.name := @reservedWords[token.kind]; token.kind := ident; token.class := identifier; end; {if} if token.kind = ident then begin {find the bucket to search} bPtr := pointer(ord4(macros)+Hash(token.name)); lastPtr := nil; {find and delete the macro entry} mPtr := bPtr^; while mPtr <> nil do begin if mPtr^.name^ = token.name^ then begin if mPtr^.readOnly then Error(10) else begin if lastPtr = nil then bPtr^ := mPtr^.next else lastPtr^.next := mPtr^.next; if mPtr^.saved then TermHeader; end; {else} goto 1; end; {if} lastPtr := mPtr; mPtr := mPtr^.next; end; {while} end {if} else Error(9); {identifier expected} 1: expandMacros := true; {enable expansions} NextToken; {skip the macro name} if token.kind <> eolsy then {make sure there's no junk on the line} Error(11); end; {DoUndef} procedure DoXCMD; { #pragma xcmd MAIN } begin {DoXCMD} FlagPragmas(p_xcmd); isXCMD := true; NextToken; {skip the command name} if token.kind = ident then begin {get the open name} openName := token.name; NextToken; end {if} else begin isXCMD := false; Error(9); end; {else} if token.kind <> eolsy then {make sure there is nothing else on the line} Error(11); end; {DoXCMD} begin {PreProcess} preprocessing := true; lSuppressMacroExpansions := suppressMacroExpansions; {inhibit token printing} suppressMacroExpansions := true; lReportEOL := reportEOL; {we need to see eol's} reportEOL := true; tSkipping := skipping; {don't skip the directive name!} skipping := false; nextLineNumber := -1; while charKinds[ord(ch)] = ch_white do {skip white space} NextCh; if ch in ['a','d','e','i','l','p','u','w'] then begin expandMacros := false; NextToken; expandMacros := true; case token.kind of ifsy: begin if not tSkipping then NumericDirective; ProcessIf(expressionValue = 0); goto 2; end; elsesy: begin DoElse; goto 2; end; ident: begin case token.name^[1] of 'a': if token.name^ = 'append' then begin if tskipping then goto 2; DoAppend; goto 2; end; {if} 'd': if token.name^ = 'define' then begin if tskipping then goto 2; DoDefine; goto 2; end; {if} 'e': if token.name^ = 'endif' then begin DoEndif; goto 2; end {if} else if token.name^ = 'else' then begin DoElse; goto 2; end {else if} else if token.name^ = 'elif' then begin DoElif; goto 2; end {else if} else if token.name^ = 'error' then begin if tskipping then goto 2; DoError(true); goto 2; end; {else if} 'i': if token.name^ = 'if' then begin if not tSkipping then NumericDirective; ProcessIf(expressionValue = 0); goto 2; end {if} else if token.name^ = 'ifdef' then begin if tSkipping then ProcessIf(false) else ProcessIf(not Defined); goto 2; end {else} else if token.name^ = 'ifndef' then begin if tSkipping then ProcessIf(false) else ProcessIf(Defined); goto 2; end {else} else if token.name^ = 'include' then begin if tskipping then goto 2; DoInclude(false); goto 2; end; {else} 'l': if token.name^ = 'line' then begin if tskipping then goto 2; FlagPragmas(p_line); lsaveNumber := saveNumber; saveNumber := true; doingDigitSequence := true; NextToken; doingDigitSequence := false; saveNumber := lsaveNumber; if token.kind in [intconst,longconst] then begin nextLineNumber := 0; for val := 1 to ord(token.numString^[0]) do begin if not (token.numString^[val] in ['0'..'9']) then begin Error(180); goto 2; end; {if} nextLineNumber := nextLineNumber * 10 + ord(token.numString^[val]) - ord('0'); end; {for} NextToken; end {if} else Error(180); if (token.kind = stringconst) and (token.prefix = prefix_none) then begin LongToPString( pointer(ord4(@sourceFileGS.theString)+1), token.sval); sourceFileGS.theString.size := token.sval^.length-1; if sourceFileGS.theString.size > 255 then sourceFileGS.theString.size := 255; changedSourceFile := true; NextToken; end; {if} if token.kind <> eolsy then Error(11); goto 2; end; {if} 'p': if token.name^ = 'pragma' then begin if tskipping then goto 2; expandMacros := false; NextToken; expandMacros := true; if token.class <> identifier then begin if (lint & lintPragmas) <> 0 then Error(110); goto 2; end; {if} if token.name^ <> 'STDC' then begin {Allow macro expansion, other than for STDC } PutBackToken(token, true, false); NextToken; end; {if} if token.name^ = 'keep' then DoKeep else if token.name^ = 'debug' then begin { debug bits: } { 1 - range checking } { 2 - create debug code } { 4 - generate profiles } { 8 - generate traceback code } { 16 - check for stack errors } { 32 - check for null pointer dereferences } { 32768 - generate inline function names } FlagPragmas(p_debug); NumericDirective; if expressionType^.kind = scalarType then if expressionType^.baseType in [cgQuad,cgUQuad] then expressionValue := llExpressionValue.lo; val := long(expressionValue).lsw; rangeCheck := odd(val); debugFlag := odd(val >> 1); profileFlag := odd(val >> 2); traceBack := odd(val >> 3); checkStack := odd(val >> 4); checkNullPointers := odd(val >> 5); debugStrFlag := odd(val >> 15); profileFlag := profileFlag or debugFlag; if token.kind <> eolsy then Error(11); goto 2; end {else} else if token.name^ = 'lint' then begin FlagPragmas(p_lint); NumericDirective; if expressionType^.kind = scalarType then if expressionType^.baseType in [cgQuad,cgUQuad] then expressionValue := llExpressionValue.lo; lint := long(expressionValue).lsw; lintIsError := true; if token.kind = semicolonch then begin NumericDirective; lintIsError := expressionValue <> 0; end; {if} if token.kind <> eolsy then Error(11); goto 2; end {else} else if token.name^ = 'memorymodel' then begin FlagPragmas(p_memorymodel); NumericDirective; smallMemoryModel := expressionValue = 0; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'expand' then begin FlagPragmas(p_expand); NumericDirective; printMacroExpansions := expressionValue <> 0; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'optimize' then begin { optimize bits: } { 1 - intermediate code peephole } { 2 - native peephole } { 4 - register value tracking } { 8 - remove stack checks } { 16 - common subexpression elimination } { 32 - loop invariant removal } { 64 - remove stack checks for vararg calls} { 128 - fp math opts that break IEEE rules } FlagPragmas(p_optimize); NumericDirective; if expressionType^.kind = scalarType then if expressionType^.baseType in [cgQuad,cgUQuad] then expressionValue := llExpressionValue.lo; val := long(expressionValue).lsw; peepHole := odd(val); npeepHole := odd(val >> 1); registers := odd(val >> 2); saveStack := not odd(val >> 3); commonSubexpression := odd(val >> 4); loopOptimizations := odd(val >> 5); strictVararg := not odd(val >> 6); fastMath := odd(val >> 7); if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'extensions' then begin { extensions bits: } { 1 - extended ORCA/C keywords } { 2 - change floating params to extended } FlagPragmas(p_extensions); NumericDirective; val := long(expressionValue).lsw; extendedKeywords := odd(val); extendedParameters := odd(val >> 1); if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'unix' then begin { unix bits: } { 1 - int is 32 bits } FlagPragmas(p_unix); NumericDirective; val := long(expressionValue).lsw; unix_1 := odd(val); if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'stacksize' then begin FlagPragmas(p_stacksize); NumericDirective; stackSize := long(expressionValue).lsw; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'cda' then DoCDA else if token.name^ = 'cdev' then DoCDev else if token.name^ = 'nda' then DoNDA else if token.name^ = 'nba' then DoNBA else if token.name^ = 'xcmd' then DoXCMD else if token.name^ = 'toolparms' then begin FlagPragmas(p_toolparms); NumericDirective; toolParms := expressionValue <> 0; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'databank' then begin FlagPragmas(p_databank); NumericDirective; dataBank := expressionValue <> 0; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'float' then DoFloat else if token.name^ = 'rtl' then begin FlagPragmas(p_rtl); rtl := true; NextToken; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'noroot' then begin FlagPragmas(p_noroot); noroot := true; NextToken; if token.kind <> eolsy then Error(11); end {else if} { else if token.name^ = 'printmacros' then begin {debug} { PrintMacroTable; NextToken; if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'path' then begin FlagPragmas(p_path); NextToken; if token.kind = stringConst then begin LongToPString(workString, token.sval); AddPath(workString); NextToken; end {if} else Error(83); if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'ignore' then begin { ignore bits: } { 1 - don't flag illegal tokens in skipped source } { 2 - allow long int character constants } { 4 - allow tokens after #endif } { 8 - allow // comments } { 16 - allow mixed decls & use C99 scope rules } { 32 - loosen some standard type checks } FlagPragmas(p_ignore); NumericDirective; if expressionType^.kind = scalarType then if expressionType^.baseType in [cgQuad,cgUQuad] then expressionValue := llExpressionValue.lo; val := long(expressionValue).lsw; skipIllegalTokens := odd(val); allowLongIntChar := odd(val >> 1); allowTokensAfterEndif := odd(val >> 2); allowSlashSlashComments := odd(val >> 3); allowMixedDeclarations := odd(val >> 4); looseTypeChecks := odd(val >> 5); if allowMixedDeclarations <> c99Scope then begin if doingFunction then Error(126) else c99Scope := allowMixedDeclarations; end; {if} if token.kind <> eolsy then Error(11); end {else if} else if token.name^ = 'STDC' then begin expandMacros := false; NextToken; if token.name^ = 'FP_CONTRACT' then OnOffSwitch else if token.name^ = 'CX_LIMITED_RANGE' then OnOffSwitch else if token.name^ = 'FENV_ACCESS' then begin OnOffSwitch; FlagPragmas(p_fenv_access); fenvAccess := (onOffValue = on); if fenvAccess then if doingFunction then fenvAccessInFunction := true; end else Error(157); expandMacros := true; end {else if} else if (lint & lintPragmas) <> 0 then Error(110); goto 2; end; {if} 'u': if token.name^ = 'undef' then begin if tskipping then goto 2; DoUndef; goto 2; end; {if} 'w': if token.name^ = 'warning' then if (cStd >= c23) or not strictMode then begin if tskipping then goto 2; DoError(false); goto 2; end; {if} otherwise: Error(57); end; {case} end; otherwise: ; end; {case} end {if} else if charKinds[ord(ch)] = ch_eol {allow null commands} then begin NextToken; goto 2; end; {else if} if not tSkipping then Error(8); {bad preprocessor command} 2: expandMacros := false; {skip to the end of the line} flagOverflows := false; skipping := tSkipping; while not (token.kind in [eolsy,eofsy]) do NextToken; flagOverflows := true; expandMacros := true; reportEOL := lReportEOL; {restore flags} suppressMacroExpansions := lSuppressMacroExpansions; skipping := tskipping; preprocessing := false; if nextLineNumber >= 0 then lineNumber := nextLineNumber; end; {PreProcess} {-- Externally available routines ------------------------------} procedure DoDefaultsDotH; { Handle the defaults.h file } var name: pString; {name of the default file} begin {DoDefaultsDotH} name := defaultName; if (customDefaultName <> nil) or (GetFileType(name) <> -1) then DoInclude(true); end; {DoDefaultsDotH} procedure Error {err: integer}; { flag an error } { } { err - error number } begin {Error} if lintIsError or not (err in lintErrors) then begin if (numErr <> maxErr) or (numErrors = 0) then numErrors := numErrors+1; liDCBGS.merrf := 16; end {if} else TermHeader; if numErr = maxErr then {set the error number} errors[maxErr].num := 4 else begin numErr := numErr+1; errors[numErr].num := err; end; {else} with errors[numErr] do begin {record the position of the error} line := tokenLine; col := tokenColumn; extraStr := nil; end; {with} if numErrors <> 0 then codeGeneration := false; {inhibit code generation} end; {Error} procedure ErrorWithExtraString {err:integer; extraStr: stringPtr}; { flag an error, with an extra string to be attached to it } { } { err - error number } { extraStr - extra string to include in error message } { } { Note: } { extraStr must point to a pString allocated with new. } { This call transfers ownership of it. } begin {ErrorWithExtraString} Error(err); if errors[numErr].num <> 4 then errors[numErr].extraStr := extraStr; end; {ErrorWithExtraString} {procedure Error2 {loc, err: integer} {debug} { flag an error } { } { loc - error location } { err - error number } {begin {Error2} {writeln('Error ', err:1, ' flagged at location ', loc:1); Error(err); end; {Error2} procedure DoNumber {scanWork: boolean}; { The current character starts a number - scan it } { } { Parameters: } { scanWork - get characters from workString? } { } { Globals: } { ch - first character in sequence; set to first char } { after sequence } { workString - string to take numbers from } label 1,2; var c2: char; {next character to process} i: integer; {loop index} isBin: boolean; {is the value a binary number?} isHex: boolean; {is the value a hex number?} isLong: boolean; {is the value a long number?} isLongLong: boolean; {is the value a long long number?} isFloat: boolean; {is the value a number of type float?} isReal: boolean; {is the value a real number?} numIndex: 0..maxLine; {index into workString} sp: stringPtr; {for saving identifier names} stringIndex: 0..maxLine; {length of the number string} unsigned: boolean; {is the number unsigned?} val: integer; {value of a digit} c1: char; {saved copy of last character} numString: pString; {characters in the number} procedure NextChar; { Return the next character that is a part of the number } begin {NextChar} if scanWork then begin if ord(workString[0]) <> numIndex then begin numIndex := numIndex+1; c2 := workString[numIndex]; end {if} else c2 := ' '; end {if} else begin NextCh; c2 := ch; end; {else} end; {NextChar} procedure FlagError (errCode: integer); { Handle an error when processing a number. Don't report } { errors when skipping code, because pp-numbers in skipped } { code never actually get converted to numeric constants. } begin {FlagError} if not skipping then Error(errCode); end; {FlagError} procedure GetDigits; { Read in a digit stream } { } { Variables: } { c2 - next character to process } { numString - digit sequence added to this string } { stringIndex - length of the string } begin {GetDigits} while (charKinds[ord(c2)] = digit) or (isHex and (c2 in ['a'..'f','A'..'F'])) do begin if c2 in ['a'..'f'] then c2 := chr(ord(c2) & $5F); stringIndex := stringIndex+1; if stringIndex > 255 then begin FlagError(131); stringIndex := 1; end; {if} numString[stringIndex] := c2; NextChar; end; {while} end; {GetDigits} procedure ShiftAndOrValue (shiftCount, nextDigit: integer); { Shift the 64-bit value of token.qval left by shiftCount, } { then binary-or it with nextDigit. } begin {ShiftAndOrValue} while shiftCount > 0 do begin token.qval.hi := token.qval.hi << 1; if (token.qval.lo & $80000000) <> 0 then token.qval.hi := token.qval.hi | 1; token.qval.lo := token.qval.lo << 1; shiftCount := shiftCount - 1; end; {while} token.qval.lo := token.qval.lo | nextDigit; end; {ShiftAndOrValue} begin {DoNumber} isBin := false; {assume it's not binary} isHex := false; {assume it's not hex} isReal := false; {assume it's an integer} isLong := false; {assume a short integer} isLongLong := false; isFloat := false; unsigned := false; {assume signed numbers} stringIndex := 0; {no digits so far...} if scanWork then begin {set up the scanner} numIndex := 0; NextChar; end {if} else c2 := ch; if c2 = '.' then begin {handle the case of no leading digits} stringIndex := 1; numString[1] := '0'; end {if} else begin GetDigits; {read the leading digit stream} if c2 in ['x','X','b','B'] then {detect hex numbers} if stringIndex = 1 then if numString[1] = '0' then begin c2 := chr(ord(c2) & $5f); if c2 = 'X' then isHex := true else {if c2 = 'B' then} if (cStd >= c23) or not strictMode then isBin := true else goto 2; stringIndex := 2; numString[2] := c2; NextChar; GetDigits; if not isHex or not (c2 in ['.','p','P']) then goto 1; end; {if} end; 2: if c2 = '.' then begin {handle a decimal} stringIndex := stringIndex+1; numString[stringIndex] := '.'; NextChar; isReal := true; if (charKinds[ord(c2)] = digit) or (isHex and (c2 in ['a'..'f','A'..'F'])) then GetDigits else if stringIndex = 2 then begin numString[3] := '0'; stringIndex := 3; end; {else} end; {if} if (not isHex and (c2 in ['e','E'])) {handle an exponent} or (isHex and (c2 in ['p','P'])) then begin stringIndex := stringIndex+1; numString[stringIndex] := c2; NextChar; isReal := true; if c2 in ['+','-'] then begin stringIndex := stringIndex+1; numString[stringIndex] := c2; NextChar; end; {if} if c2 in ['0'..'9'] then GetDigits else begin stringIndex := stringIndex+1; numString[stringIndex] := '0'; FlagError(101); end; {else} end; {if} 1: while c2 in ['l','u','L','U'] do {check for long or unsigned} if c2 in ['l','L'] then begin if isLong or isLongLong then FlagError(156); c1 := c2; NextChar; if c2 = c1 then begin NextChar; isLongLong := true; end {if} else isLong := true; end {if} else {if c2 in ['u','U'] then} begin NextChar; if unsigned then FlagError(156) else if isReal then FlagError(91); unsigned := true; end; {else} if c2 in ['f','F'] then begin {allow F designator on reals} if unsigned then FlagError(91); if isLongLong then FlagError(156); if not isReal then begin FlagError(100); isReal := true; end; {if} isFloat := true; NextChar; end; {if} numString[0] := chr(stringIndex); {set the length of the string} if doingPPExpression then isLongLong := true; if isReal then begin {convert a real constant} if isFloat then token.kind := floatConst else if isLong then token.kind := extendedConst else token.kind := doubleConst; token.class := realConstant; if isHex then begin token.rval := ConvertHexFloat(numString); if token.rval <> token.rval then {NAN => invalid format} FlagError(168); end {if} else if stringIndex > 80 then begin FlagError(131); token.rval := 0.0; end {if} else token.rval := cnvsd(numString); end {if} else if numString[1] <> '0' then begin {convert a decimal integer} if (stringIndex > 5) or (not unsigned and (stringIndex = 5) and (numString > '32767')) or (unsigned and (stringIndex = 5) and (numString > '65535')) then isLong := true; if (stringIndex > 10) or (not unsigned and (stringIndex = 10) and (numString > '2147483647')) or (unsigned and (stringIndex = 10) and (numString > '4294967295')) then isLongLong := true; if (not unsigned and ((stringIndex > 19) or ((stringIndex = 19) and (numString > '9223372036854775807')))) or (unsigned and ((stringIndex > 20) or ((stringIndex = 20) and (numString > '18446744073709551615')))) then begin numString := '0'; if flagOverflows then FlagError(6); end; {if} if isLongLong then begin token.class := longlongConstant; Convertsll(token.qval, numString); if unsigned then token.kind := ulonglongConst else begin token.kind := longlongConst; end; {else} end {if} else if isLong then begin token.class := longConstant; token.lval := Convertsl(numString); if unsigned then token.kind := ulongConst else token.kind := longConst; end {if} else begin if unsigned then token.kind := uintConst else token.kind := intConst; token.class := intConstant; token.lval := Convertsl(numString); end; {else} end {else if} else begin {hex, octal, & binary} token.qval.lo := 0; token.qval.hi := 0; if isHex then begin i := 3; while i <= length(numString) do begin if token.qval.hi & $F0000000 <> 0 then begin i := maxint; if flagOverflows then FlagError(6); end {if} else begin if numString[i] > '9' then val := (ord(numString[i])-7) & $000F else val := ord(numString[i]) & $000F; ShiftAndOrValue(4, val); i := i+1; end; {else} end; {while} end {if} else if isBin then begin i := 3; while i <= length(numString) do begin if token.qval.hi & $80000000 <> 0 then begin i := maxint; if flagOverflows then FlagError(6); end {if} else begin if not (numString[i] in ['0','1']) then FlagError(121); ShiftAndOrValue(1, ord(numString[i]) & $0001); i := i+1; end; {else} end; {while} end {if} else begin i := 1; while i <= length(numString) do begin if token.qval.hi & $E0000000 <> 0 then begin i := maxint; if flagOverflows then FlagError(6); end {if} else begin if numString[i] in ['8','9'] then if not doingDigitSequence then FlagError(7); ShiftAndOrValue(3, ord(numString[i]) & $0007); i := i+1; end; {else} end; {while} end; {else} if token.qval.hi <> 0 then isLongLong := true; if not isLongLong then if long(token.qval.lo).msw <> 0 then isLong := true; if isLongLong then begin if unsigned or (token.qval.hi & $80000000 <> 0) then token.kind := ulonglongConst else token.kind := longlongConst; token.class := longlongConstant; end {if} else if isLong then begin if unsigned or (token.qval.lo & $80000000 <> 0) then token.kind := ulongConst else token.kind := longConst; token.class := longConstant; end {if} else begin if (long(token.qval.lo).lsw & $8000) <> 0 then unsigned := true; if unsigned then token.kind := uintConst else token.kind := intConst; token.class := intConstant; end; {else} end; {else} if saveNumber then begin sp := pointer(GMalloc(length(numString)+1)); CopyString(pointer(sp), @numString); token.numString := sp; end; {if} if scanWork then {make sure we read all characters} if ord(workString[0]) <> numIndex then Error(63); end; {DoNumber} function UniversalCharacterName : ucsCodePoint; { Scan a universal character name. } { The current character should be the 'u' or 'U'. } { } { Returns the code point value of the UCN. } { } { Globals: } { ucnString - string representation of this UCN } var digits: integer; {number of hex digits (4 or 8)} codePoint: longint; {the code point specified by this UCN} dig: 0..15; {value of a hex digit} i: integer; {index for recording UCN string} begin {UniversalCharacterName} i := 1; ucnString[i] := '\'; i := i + 1; codePoint := 0; if ch = 'u' then digits := 4 else {if ch = 'U' then} digits := 8; ucnString[i] := ch; i := i + 1; NextCh; while digits > 0 do begin if ch in ['0'..'9','a'..'f','A'..'F'] then begin if ch in ['0'..'9'] then dig := ord(ch) & $0F else begin ch := chr(ord(ch)&$5F); dig := ord(ch)-ord('A')+10; end; {else} codePoint := (codePoint << 4) | dig; ucnString[i] := ch; i := i + 1; NextCh; digits := digits - 1; end {while} else begin if not skipping then Error(145); codePoint := $0000C0; digits := 0; end; {else} end; {while} ucnString[0] := chr(i - 1); if (codePoint < 0) or (codePoint > maxUCSCodePoint) or ((codePoint >= $00D800) and (codePoint <= $00DFFF)) or ((codePoint < $A0) and not (ord(codePoint) in [$24,$40,$60])) then begin Error(145); UniversalCharacterName := $0000C0; end {if} else UniversalCharacterName := codePoint; {Normalize UCN string to shorter form for codepoints that fit in 16 bits} if (ord(ucnString[0]) = 10) and (codePoint <= $00FFFF) then begin ucnString[2] := 'u'; ucnString[3] := ucnString[7]; ucnString[4] := ucnString[8]; ucnString[5] := ucnString[9]; ucnString[6] := ucnString[10]; ucnString[0] := chr(6); end; {if} end; {UniversalCharacterName} procedure InitScanner {start, end: ptr}; { initialize the scanner } { } { start - pointer to the first character in the file } { end - points one byte past the last character in the file } var chi: minChar..maxChar; {loop variable} lch: char; {next command line character} cp: ptr; {character pointer} i: 0..hashSize; {loop variable} stdName: stringPtr; {selected C standard} tPtr: tokenListRecordPtr; {for building macros from command line} mp: macroRecordPtr; {for building the predefined macros} bp: ^macroRecordPtr; timeString: packed array[1..20] of char; {time from misc. tools} procedure NextCh; { Get the next character from the command line } begin {NextCh} lch := chr(cp^); cp := pointer(ord4(cp)+1); tokenColumn := tokenColumn+1; if tokenColumn > infoStringGS.theString.size then lch := chr(0); end; {NextCh} function GetWord: stringPtr; { Read a word from the command line } var i: integer; {string index} sp: stringPtr; {string pointer} begin {GetWord} i := 0; while not (lch in [' ', chr(0), chr(9), '=']) do begin i := i+1; workString[i] := lch; NextCh; end; {while} workString[0] := chr(i); sp := pointer(malloc(length(workString)+1)); CopyString(pointer(sp), @workString); GetWord := sp; end; {GetWord} function EscapeCh: integer; { Find and return the next character in a string or char } { constant. Handle escape sequences if they are found. } { (The character is returned as an ordinal value.) } { } { Globals: } { lch - first character in sequence; set to first char } { after sequence } label 1; var cnt: 0..3; {for counting octal escape sequences} dig: 0..15; {value of a hex digit} skipChar: boolean; {get next char when done?} val: 0..maxint; {hex/octal escape code value} begin {EscapeCh} 1: skipChar := true; if lch = '\' then begin NextCh; if lch in ['0'..'7','a','b','t','n','v','f','p','r','x', '''','"','?','\'] then case lch of '0','1','2','3','4','5','6','7': begin val := 0; cnt := 0; while (cnt < 3) and (lch in ['0'..'7']) do begin val := (val << 3) | (ord(lch) & 7); cnt := cnt+1; NextCh; end; {while} if (val & $FF00) <> 0 then Error(162); EscapeCh := val & $FF; skipChar := false; end; 'a': EscapeCh := 7; 'b': EscapeCh := 8; 't': EscapeCh := 9; 'n': EscapeCh := 10; 'v': EscapeCh := 11; 'f': EscapeCh := 12; 'p': begin EscapeCh := ord('p'); ispstring := true; end; 'r': EscapeCh := 13; 'x': begin val := 0; NextCh; while lch in ['0'..'9','a'..'f','A'..'F'] do begin if lch in ['0'..'9'] then dig := ord(lch) & $0F else begin lch := chr(ord(lch)&$5F); dig := ord(lch)-ord('A')+10; end; {else} val := (val << 4) | dig; if (val & $FF00) <> 0 then begin Error(162); val := 0; end; {if} NextCh; end; {while} skipChar := false; EscapeCh := val & $FF; end; '''','"','?','\': EscapeCh := ord(ch); otherwise: Error(57); end {case} else begin Error(162); EscapeCh := ord(lch); end; {else} end {if} else EscapeCh := ord(lch); if skipChar then NextCh; end; {EscapeCh} procedure GetString; { read a string token from the command line } var i: integer; {string length} setLength: boolean; {is the current string a p-string?} sPtr: longstringPtr; {work string pointer} begin {GetString} token.kind := stringconst; {set up the token} token.class := stringConstant; i := 0; {set up for the string scan} ispstring := false; setLength := false; new(sPtr); NextCh; {skip the opening "} {read the characters} while not (charKinds[ord(lch)] in [ch_string,ch_eol,ch_eof]) do begin i := i+1; if i = longstringlen then begin i := 1001; Error(90); end; {if} sPtr^.str[i] := chr(EscapeCh); if (i = 1) and ispstring then setLength := true; end; {while} if lch = '"' then {process the end of the string} NextCh else Error(3); if setLength then {check for a p-string} sPtr^.str[1] := chr(i-1); token.ispstring := setLength; sPtr^.length := i; {set the string length} token.sval := pointer(Malloc(i+3)); {put the string in the string pool} CopyLongString(token.sval, pointer(sPtr)); dispose(sPtr); token.sval^.str[i+1] := chr(0); {add null terminator} token.sval^.length := i+1; token.prefix := prefix_none; end; {GetString} procedure FlagErrorAndSkip; { Flag an error about an invalid cc= option and skip } { characters from the command line until whitespace or end. } begin {FlagErrorAndSkip} Error(108); while not (lch in [chr(0),' ',chr(9)]) do NextCh; end; {FlagErrorAndSkip} begin {InitScanner} printMacroExpansions := false; {don't print the token list} suppressMacroExpansions := false; {...but do not suppress token printing} skipIllegalTokens := false; {flag illegal tokens in skipped code} allowLongIntChar := false; {allow long int char constants} allowTokensAfterEndif := false; {allow tokens after #endif} allowSlashSlashComments := true; {allow // comments (C99)} allowMixedDeclarations := true; {allow mixed declarations & stmts (C99)} c99Scope := true; {follow C99 rules for block scopes} looseTypeChecks := true; {loosen some standard type checks} extendedKeywords := true; {allow extended ORCA/C keywords} extendedParameters := true; {treat all floating params as extended} foundFunction := false; {no functions found so far} fileList := nil; {no included files} gettingFileName := false; {not in GetFileName} ifList := nil; {no conditional comp. records} skipping := false; {not skipping tokens} flagOverflows := true; {flag overflow errors?} new(macros); {no preprocessor macros so far} for i := 0 to hashSize do macros^[i] := nil; pathList := nil; {no additional search paths} tokenList := nil; {nothing in putback buffer} saveNumber := false; {don't save numbers} expandMacros := true; {enable macro expansion} reportEOL := false; {report eolsy as a token?} lineNumber := 1; {start the line counter} chPtr := start; {set the start, end pointers} currentChPtr := start; eofPtr := endPtr; firstPtr := start; {first char in line} numErr := 0; {no errors so far} numErrors := 0; includeCount := 0; {no pending calls to EndInclude} lint := 0; {turn off lint checks} ch := chr(RETURN); {set the initial character} needWriteLine := false; {no lines are pending} wroteLine := false; {current line has not been written} switchLanguages := false; {not switching languages} lastWasReturn := false; {last char was not return} doingStringOrCharacter := false; {not doing a string} doingPPExpression := false; {not doing a preprocessor expression} unix_1 := false; {int is 16 bits} lintIsError := true; {lint messages are considered errors} fenvAccess := false; {not accessing fp environment} charStrPrefix := prefix_none; {no char/str prefix seen} mergingStrings := false; {not currently merging strings} customDefaultName := nil; {no custom default name} pragmaKeepFile := nil; {no #pragma keep file so far} doingFakeFile := false; {not doing a fake file} doingDigitSequence := false; {not expecting a digit sequence} preprocessing := false; {not preprocessing} cStd := c17; {default to C17} strictMode := false; {...with extensions} {error codes for lint messages} {if changed, also change maxLint} lintErrors := [51,104,105,110,124,125,128,129,130,147,151,152,153,154,155,170,185,186]; spaceStr := ' '; {strings used in stringization} quoteStr := '"'; {set of classes for numeric constants} numericConstants := [intConstant,longConstant,longlongConstant,realConstant]; new(mp); {__LINE__} mp^.name := @'__LINE__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 1; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__FILE__} mp^.name := @'__FILE__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 2; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__DATE__} mp^.name := @'__DATE__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 3; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__TIME__} mp^.name := @'__TIME__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 4; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC__} mp^.name := @'__STDC__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__ORCAC__} mp^.name := @'__ORCAC__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__VERSION__} mp^.name := @'__VERSION__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 6; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_UTF_16__} mp^.name := @'__STDC_UTF_16__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_UTF_32__} mp^.name := @'__STDC_UTF_32__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__ORCAC_HAS_LONG_LONG__} mp^.name := @'__ORCAC_HAS_LONG_LONG__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_NO_ATOMICS__} mp^.name := @'__STDC_NO_ATOMICS__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_NO_COMPLEX__} mp^.name := @'__STDC_NO_COMPLEX__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_NO_THREADS__} mp^.name := @'__STDC_NO_THREADS__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_NO_VLA__} mp^.name := @'__STDC_NO_VLA__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 5; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {__STDC_HOSTED__} mp^.name := @'__STDC_HOSTED__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 7; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; new(mp); {_Pragma pseudo-macro} mp^.name := @'_Pragma'; mp^.parameters := 1; mp^.isVarargs := true; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 8; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; SetDateTime; {set up the macro date/time strings} {set up the version string} versionStrL := pointer(GCalloc(3 + length(versionStr))); versionStrL^.length := length(versionStr)+1; versionStrL^.str := versionStr; {Scan the command line options} cp := @infoStringGS.theString.theString; tokenLine := 0; tokenColumn := 0; doingCommandLine := true; NextCh; repeat while lch in [' ', chr(9)] do {skip leading blanks} NextCh; if lch = '-' then begin {see if we have found one} NextCh; if lch in ['d','D'] then begin NextCh; {yes -> get the name} if charKinds[ord(lch)] <> letter then Error(9); new(mp); {form the macro table entry} mp^.name := GetWord; mp^.parameters := -1; mp^.readOnly := false; mp^.saved := true; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; if lch = '=' then begin mp^.tokens := nil; NextCh; {record the value} if lch in ['+','-','*','&','~','!'] then begin new(tPtr); tPtr^.next := mp^.tokens; mp^.tokens := tPtr; tPtr^.expandEnabled := true; tPtr^.tokenStart := ptr(ord4(cp)-1); tPtr^.tokenEnd := cp; tPtr^.token.class := reservedSymbol; tPtr^.token.isDigraph := false; tPtr^.token.numString := nil; case lch of '+': tPtr^.token.kind := plusch; '-': tPtr^.token.kind := minusch; '*': tPtr^.token.kind := asteriskch; '&': tPtr^.token.kind := andch; '~': tPtr^.token.kind := tildech; '!': tPtr^.token.kind := excch; end; {case} NextCh; end; if not (charKinds[ord(lch)] in [ch_white,ch_eol,ch_eof]) then begin new(tPtr); tPtr^.next := mp^.tokens; mp^.tokens := tPtr; tPtr^.expandEnabled := true; tPtr^.tokenStart := ptr(ord4(cp)-1); token.numString := nil; if charKinds[ord(lch)] = letter then begin token.kind := ident; token.class := identifier; token.name := GetWord; token.symbolPtr := nil; end {if} else if lch in ['.','0'..'9'] then begin token.name := GetWord; saveNumber := true; DoNumber(true); saveNumber := false; end {else if} else if lch = '"' then GetString else begin FlagErrorAndSkip; mp^.tokens := tPtr^.next; end; {else} tPtr^.token := token; tPtr^.tokenEnd := ptr(ord4(cp)-1); end; {if} end {if} else begin new(tPtr); tPtr^.next := nil; mp^.tokens := tPtr; tPtr^.expandEnabled := true; oneStr := '1'; tPtr^.tokenStart := @oneStr[1]; tPtr^.tokenEnd := pointer(ord4(@oneStr[1])+1); tPtr^.token.kind := intconst; tPtr^.token.numString := @oneStr; tPtr^.token.class := intConstant; tPtr^.token.ival := 1; end; {else} end {if} else if lch in ['i','I'] then begin NextCh; {get the pathname} if lch = '"' then begin GetString; LongToPString(workString, token.sval); AddPath(workString); end {if} else FlagErrorAndSkip; end {else if} else if lch in ['p','P'] then begin NextCh; {get the filename} if lch = '"' then begin GetString; if customDefaultName = nil then new(customDefaultName) else Error(108); LongToPString(customDefaultName, token.sval); end {if} else FlagErrorAndSkip; end {else if} else if lch in ['s','S'] then begin NextCh; stdName := GetWord; if (stdName^ = 'c89compat') or (stdName^ = 'c90compat') then begin cStd := c89; strictMode := false; end {if} else if (stdName^ = 'c94compat') or (stdName^ = 'c95compat') then begin cStd := c95; strictMode := false; end {else if} else if (stdName^ = 'c99compat') then begin cStd := c99; strictMode := false; end {else if} else if (stdName^ = 'c11compat') then begin cStd := c11; strictMode := false; end {else if} else if (stdName^ = 'c11') then begin cStd := c11; strictMode := true; end {else if} else if (stdName^ = 'c17compat') or (stdName^ = 'c18compat') then begin cStd := c17; strictMode := false; end {else if} else if (stdName^ = 'c17') or (stdName^ = 'c18') then begin cStd := c17; strictMode := true; end {else if} else FlagErrorAndSkip; end {else if} else {not -d, -i, -p, -s: flag the error} FlagErrorAndSkip; end {if} else if lch <> chr(0) then begin Error(108); {unknown option: flag the error} lch := chr(0); end; {else} until lch = chr(0); {if more characters, loop} if numErr <> 0 then WriteLine; doingCommandLine := false; {Standard-dependent configuration} if cStd >= c95 then begin new(mp); {add __STDC_VERSION__ macro} mp^.name := @'__STDC_VERSION__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := true; mp^.saved := true; mp^.algorithm := 9; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; end; {if} if cStd < c99 then begin allowSlashSlashComments := false; allowMixedDeclarations := false; c99Scope := false; end; {if} if strictMode then begin extendedKeywords := false; extendedParameters := false; looseTypeChecks := false; if cStd >= c99 then lint := lint | lintC99Syntax; new(mp); {add __KeepNamespacePure__ macro} mp^.name := @'__KeepNamespacePure__'; mp^.parameters := -1; mp^.tokens := nil; mp^.readOnly := false; mp^.saved := true; mp^.algorithm := 0; bp := pointer(ord4(macros) + hash(mp^.name)); mp^.next := bp^; bp^ := mp; end; {if} end; {InitScanner} procedure CheckIdentifier; { See if an identifier is a reserved word, macro or typedef } label 1; var bPtr: ^macroRecordPtr; {pointer to hash bucket} mPtr: macroRecordPtr; {for checking list of macros} rword: tokenEnum; {loop variable} sp: stringPtr; {for saving identifier names} lSuppressMacroExpansions: boolean; {local copy of suppressMacroExpansions} begin {CheckIdentifier} if expandMacros then {handle macro expansions} if not skipping then begin mPtr := FindMacro(@workstring); if mPtr <> nil then begin Expand(mPtr); lSuppressMacroExpansions := suppressMacroExpansions; suppressMacroExpansions := true; NextToken; suppressMacroExpansions := lSuppressMacroExpansions; goto 1; end; end; {if} {see if it's a reserved word} if workString[1] in ['_','a'..'g','i','l','p','r'..'w'] then for rword := wordHash[ord(workString[1])-ord('_')] to pred(wordHash[ord(succ(workString[1]))-ord('_')]) do if reservedWords[rword] = workString then if extendedKeywords or not (rword in [asmsy,compsy,extendedsy,pascalsy,segmentsy]) then begin token.kind := rword; token.class := reservedWord; goto 1; end; {if} token.symbolPtr := nil; {see if it's a typedef name} if FindSymbol(token,allSpaces,false,false) <> nil then begin if token.symbolPtr^.class = typedefsy then token.kind := typedef; token.name := token.symbolPtr^.name; {use the old name} end {if} else begin {record the name} sp := pointer(Malloc(length(workString)+1)); CopyString(pointer(sp), @workString); token.name := sp; end; {else} 1: end; {CheckIdentifier} function PeekCh: char; { Peek at the next character from the file, without advancing } { the character pointer. } { } { This is typically the character that will be produced by the } { next call to NextCh, but this function only deals with } { translation phases 1 and 2 (trigraphs and line continuations).} { It does not skip comments. } label 1; var cp: ptr; {work pointer} ch: char; {work character} begin {PeekCh} cp := chPtr; 1: if cp = eofPtr then PeekCh := chr(0) else begin ch := chr(cp^); if ch = '?' then {handle trigraphs} if ord4(eofPtr)-ord4(cp) > 2 then if chr(ptr(ord4(cp)+1)^) = '?' then if chr(ptr(ord4(cp)+2)^) in ['=','(','/',')','''','<','!','>','-'] then begin case chr(ptr(ord4(cp)+2)^) of '(': ch := '['; '<': ch := '{'; '/': ch := '\'; '''': ch := '^'; '=': ch := '#'; ')': ch := ']'; '>': ch := '}'; '!': ch := '|'; '-': ch := '~'; end; {case} cp := pointer(ord4(cp)+2); end; {if} if ch = '\' then {handle line continuations} if ord4(eofPtr)-ord4(cp) > 1 then if charKinds[ptr(ord4(cp)+1)^] = ch_eol then begin if ord4(eofPtr)-ord4(cp) > 2 then if ptr(ord4(cp)+2)^ in [$06,$07] then cp := pointer(ord4(cp)+1); {skip debugger characters} cp := pointer(ord4(cp)+2); goto 1; end; {if} PeekCh := ch; end; {else} end; {PeekCh} procedure NextToken; { Read the next token from the file. } label 1,2,3,4,5,6,7,8; type three = (s100,s1000,sMAX); {these declarations are used for a} gstringPtr = ^gstringRecord; { variable length string record } gstringRecord = record case three of s100: (len1: integer; str1: packed array[1..100] of char; ); s1000: (len2: integer; str2: packed array[1..1000] of char; ); sMAX: (len3: integer; str3: packed array[1..longstringlen] of char; ); end; var done: boolean; {loop termination} expandEnabled: boolean; {can a token be expanded?} i,j: 0..maxint; {loop/index counter} inhibit: boolean; {inhibit macro expansion?} lExpandMacros: boolean; {local copy of expandMacros} lSuppressMacroExpansions: boolean; {local copy of suppressMacroExpansions} mPtr: macroRecordPtr; {for checking list of macros} setLength: boolean; {is the current string a p-string?} tPtr: tokenListRecordPtr; {for removing tokens from putback buffer} tToken: tokenType; {for merging tokens} sPtr,tsPtr: gstringPtr; {for forming string constants} suppressPrint: boolean; {suppress printing the token?} lLastWasReturn: boolean; {local copy of lastWasReturn} codePoint: longint; {Unicode character value} chFromUCN: integer; {character given by UCN (converted)} c16ptr: ^integer; {pointer to char16_t value} c32ptr: ^longint; {pointer to char32_t value} utf8: utf8Rec; {UTF-8 encoding of character} utf16: utf16Rec; {UTF-16 encoding of character} function EscapeCh: longint; { Find and return the next character in a string or char } { constant. Handle escape sequences if they are found. } { (The character is returned as an ordinal value.) } { } { Globals: } { ch - first character in sequence; set to first char } { after sequence } { charStrPrefix - prefix of the char constant or string } { octHexEscape - true if this was an octal/hex escape seq.} var cnt: 0..3; {for counting octal escape sequences} dig: 0..15; {value of a hex digit} skipChar: boolean; {get next char when done?} val: longint; {hex/octal escape code value} codePoint: ucsCodePoint; {code point given by UCN} chFromUCN: integer; {character given by UCN (converted)} begin {EscapeCh} octHexEscape := false; skipChar := true; if ch = '\' then begin NextCh; if ch in ['0'..'7','a','b','t','n','v','f','p','r','x','u','U', '''','"','?','\'] then case ch of '0','1','2','3','4','5','6','7': begin val := 0; cnt := 0; while (cnt < 3) and (ch in ['0'..'7']) do begin val := (val << 3) | (ord(ch) & 7); cnt := cnt+1; NextCh; end; {while} if (val & $FF00) <> 0 then if charStrPrefix in [prefix_none,prefix_u8] then begin if not skipping then Error(162); val := 0; end; {if} EscapeCh := val; octHexEscape := true; skipChar := false; end; 'a': EscapeCh := 7; 'b': EscapeCh := 8; 't': EscapeCh := 9; 'n': EscapeCh := 10; 'v': EscapeCh := 11; 'f': EscapeCh := 12; 'p': begin EscapeCh := ord('p'); ispstring := true; end; 'r': EscapeCh := 13; 'x': begin val := 0; NextCh; while ch in ['0'..'9','a'..'f','A'..'F'] do begin if ch in ['0'..'9'] then dig := ord(ch) & $0F else begin ch := chr(ord(ch)&$5F); dig := ord(ch)-ord('A')+10; end; {else} if ((charStrPrefix = prefix_none) and ((val & $F0) <> 0)) or ((charStrPrefix = prefix_u8) and ((val & $F0) <> 0)) or ((charStrPrefix = prefix_u16) and ((val & $F000) <> 0)) or ((charStrPrefix = prefix_u32) and ((val & $F0000000) <> 0)) then begin if not skipping then Error(162); while ch in ['0'..'9','a'..'f','A'..'F'] do NextCh; val := 0; end {if} else begin val := (val << 4) | dig; NextCh; end; {else} end; {while} skipChar := false; EscapeCh := val; octHexEscape := true; end; 'u','U': begin codePoint := UniversalCharacterName; skipChar := false; if charStrPrefix = prefix_none then begin chFromUCN := ConvertUCSToMacRoman(codePoint); if chFromUCN >= 0 then EscapeCh := chFromUCN else begin EscapeCh := 0; if not skipping then Error(146); end; {else} end {if} else EscapeCh := codePoint; end; '''','"','?','\': EscapeCh := ord(ch); otherwise: Error(57); end {case} else begin if not skipping then Error(162); EscapeCh := ord(ch); end; {else} end {if} else if charStrPrefix = prefix_none then EscapeCh := ord(ch) else EscapeCh := ConvertMacRomanToUCS(ord(ch)); if skipChar then NextCh; end; {EscapeCh} procedure CharConstant; { Scan a single-quote character constant } var cnt: integer; {number of characters scanned} result: longint; {character value} begin {CharConstant} {set up locals} cnt := 0; result := 0; doingStringOrCharacter := true; {skip the leading quote} NextCh; if charStrPrefix = prefix_L then begin charStrPrefix := prefix_u16; if not skipping then Error(167); end; {if} {read the characters in the constant} while (not (charKinds[ord(ch)] in [ch_char,ch_eol,ch_eof])) do begin if cnt < maxint then cnt := cnt + 1; if charStrPrefix = prefix_none then result := (result << 8) | EscapeCh else result := EscapeCh; end; {while} doingStringOrCharacter := false; {skip the closing quote} if (charKinds[ord(ch)] = ch_char) then begin if (cnt = 0) and ((not skipping) or (not skipIllegalTokens)) then Error(2); NextCh; end {if} else if (not skipping) or (not skipIllegalTokens) then Error(2); {create the token} if charStrPrefix = prefix_none then begin if allowLongIntChar and (cnt >= 3) then begin token.kind := longconst; token.class := longConstant; token.lval := result; end {if} else begin token.kind := intconst; token.class := intConstant; token.ival := long(result).lsw; end; {else} end {if} else if charStrPrefix = prefix_u16 then begin token.kind := ushortconst; token.class := intConstant; if octHexEscape then token.ival := long(result).lsw else begin UTF16Encode(result, utf16); token.ival := utf16.codeUnits[1]; end; {else} end {else if} else if charStrPrefix = prefix_U32 then begin token.kind := ulongconst; token.class := longConstant; token.lval := result; end; {else if} if saveNumber then {TODO: support token merging} token.numString := @'?'; charStrPrefix := prefix_none; {no prefix for next char/str (so far)} end; {CharConstant} procedure ConcatenateTokenString(tPtr: tokenListRecordPtr); { Concatenate the strings for the current token and the one } { represented by tPtr, and update tokenStart/tokenEnd to } { point to the new string. } var len: longint; {length of new token string} srcPtr, destPtr: ptr; {pointers for data copying} begin {ConcatenateTokenString} len := ord4(tokenEnd)-ord4(tokenStart) +ord4(tPtr^.tokenEnd)-ord4(tPtr^.tokenStart)+1; if len <= maxint then begin destPtr := GMalloc(ord(len)); srcPtr := tokenStart; tokenStart := destPtr; while srcPtr <> tokenEnd do begin destPtr^ := srcPtr^; destPtr := ptr(ord4(destPtr)+1); srcPtr := ptr(ord4(srcPtr)+1); end; {while} srcPtr := tPtr^.tokenStart; while srcPtr <> tPtr^.tokenEnd do begin destPtr^ := srcPtr^; destPtr := ptr(ord4(destPtr)+1); srcPtr := ptr(ord4(srcPtr)+1); end; {while} destPtr^ := tPtr^.tokenEnd^; tokenEnd := destPtr; end {if} else Error(90); end; {ConcatenateTokenString} begin {NextToken} if ifList = nil then {do pending EndInclude calls} while includeCount <> 0 do begin EndInclude(includeChPtr); includeCount := includeCount - 1; end; {while} includeChPtr := chPtr; 3: token.numstring := nil; {wipe out old numstrings} if tokenList <> nil then begin {get a token put back by a macro} tPtr := tokenList; tokenList := tPtr^.next; expandEnabled := tPtr^.expandEnabled; tokenExpandEnabled := expandEnabled; suppressPrint := tPtr^.suppressPrint; token := tPtr^.token; tokenStart := tPtr^.tokenStart; tokenEnd := tPtr^.tokenEnd; dispose(tPtr); if token.kind = typedef then {allow for typedefs in a macro} token.kind := ident; 4: while (token.kind = stringconst) and (tokenList <> nil) and (tokenList^.token.kind = stringconst) do begin MergeStrings(token, tokenList^.token); tPtr := tokenList; tokenList := tPtr^.next; dispose(tPtr); end; {while} if expandMacros and expandEnabled and (not skipping) then if token.kind = ident then begin {handle macro expansions} inhibit := false; if tokenList <> nil then if tokenList^.token.kind = poundpoundop then inhibit := true; if not inhibit then begin mPtr := FindMacro(token.name); if mPtr <> nil then begin Expand(mPtr); goto 3; end; {if} end; {if} end; {if} if tokenList <> nil then if tokenList^.token.kind = poundpoundop then begin tPtr := tokenList; tokenList := tPtr^.next; dispose(tPtr); if tokenList <> nil then begin tPtr := tokenList; tToken := token; Merge(tToken, tPtr^.token); ConcatenateTokenString(tPtr); tokenList := tPtr^.next; token := tToken; tokenExpandEnabled := true; dispose(tPtr); goto 4; end; {if} end; {if} if token.kind = ident then begin CopyString(@workString, token.name); lExpandMacros := expandMacros; expandMacros := false; CheckIdentifier; expandMacros := lExpandMacros; end; {if} goto 2; end {if} else suppressPrint := false; 5: {skip white space} while charKinds[ord(ch)] in [illegal,ch_white,ch_eol,ch_pound] do begin if charKinds[ord(ch)] = ch_pound then begin if lastWasReturn or (token.kind = eolsy) then begin NextCh; {skip the '#' char} PreProcess {call the preprocessor} end {if} else goto 7; end {if} else if (charKinds[ord(ch)] = ch_eol) and reportEOL then begin token.class := reservedSymbol; {record an eol token} token.kind := eolsy; tokenLine := lineNumber; tokenColumn := ord(ord4(chPtr)-ord4(firstPtr)); tokenStart := pointer(ord4(chPtr)-1); tokenEnd := chPtr; NextCh; goto 2; end {if} else if charKinds[ord(ch)] = illegal then begin tokenLine := lineNumber; {record an illegal token} tokenColumn := ord(ord4(chPtr)-ord4(firstPtr)); tokenStart := pointer(ord4(chPtr)-1); tokenEnd := chPtr; token.kind := questionch; {make sure it is not eolsy} if (not skipping) or (not skipIllegalTokens) then Error(1); NextCh; end {else if} else begin {skip white space} if printMacroExpansions and not suppressMacroExpansions then if charKinds[ord(ch)] = ch_eol then begin StopSpin; writeln; end {if} else write(ch); NextCh; end; end; {while} 7: tokenLine := lineNumber; {record the position of the token} tokenColumn := ord(ord4(currentChPtr)-ord4(firstPtr)+1); tokenStart := currentChPtr; 6: token.class := reservedSymbol; {default to the most common class} case charKinds[ord(ch)] of ch_special : begin token.kind := charSym[ord(ch)]; token.isDigraph := false; NextCh; end; ch_eof: {end of file} token.kind := eofsy; ch_pound : begin {tokens that start with '#'} NextCh; token.isDigraph := false; if ch = '#' then begin token.kind := poundpoundop; NextCh; end else token.kind := poundch; end; ch_dash : begin {tokens that start with '-'} NextCh; if ch = '>' then begin token.kind := minusgtop; NextCh; end else if ch = '-' then begin token.kind := minusminusop; NextCh; end else if ch = '=' then begin token.kind := minuseqop; NextCh; end else token.kind := minusch; end; ch_plus : begin {tokens that start with '+'} NextCh; if ch = '+' then begin token.kind := plusplusop; NextCh; end else if ch = '=' then begin token.kind := pluseqop; NextCh; end else token.kind := plusch; end; ch_lt : begin {tokens that start with '<'} NextCh; if ch = '<' then begin NextCh; if ch = '=' then begin token.kind := ltlteqop; NextCh; end else token.kind := ltltop; end else if ch = '=' then begin token.kind := lteqop; NextCh; end else if ch = ':' then begin token.kind := lbrackch; { <: digraph } token.isDigraph := true; NextCh; end else if ch = '%' then begin token.kind := lbracech; { <% digraph } token.isDigraph := true; NextCh; end else token.kind := ltch; end; ch_gt : begin {tokens that start with '>'} NextCh; if ch = '>' then begin NextCh; if ch = '=' then begin token.kind := gtgteqop; NextCh; end else token.kind := gtgtop; end else if ch = '=' then begin token.kind := gteqop; NextCh; end else token.kind := gtch; end; ch_eq : begin {tokens that start with '='} NextCh; if ch = '=' then begin token.kind := eqeqop; NextCh; end else token.kind := eqch; end; ch_exc : begin {tokens that start with '!'} NextCh; if ch = '=' then begin token.kind := exceqop; NextCh; end else token.kind := excch; end; ch_and : begin {tokens that start with '&'} NextCh; if ch = '&' then begin token.kind := andandop; NextCh; end else if ch = '=' then begin token.kind := andeqop; NextCh; end else token.kind := andch; end; ch_bar : begin {tokens that start with '|'} NextCh; if ch = '|' then begin token.kind := barbarop; NextCh; end else if ch = '=' then begin token.kind := bareqop; NextCh; end else token.kind := barch; end; ch_percent: begin {tokens that start with '%'} lLastWasReturn := lastWasReturn or (token.kind = eolsy); NextCh; if ch = '=' then begin token.kind := percenteqop; NextCh; end else if ch = '>' then begin token.kind := rbracech; {%> digraph} token.isDigraph := true; NextCh; end else if ch = ':' then begin NextCh; token.isDigraph := true; if (ch = '%') and (PeekCh = ':') then begin token.kind := poundpoundop; {%:%: digraph} NextCh; NextCh; end else begin token.kind := poundch; {%: digraph} if lLastWasReturn then begin PreProcess; goto 5; end; end; end else token.kind := percentch; end; ch_carot : begin {tokens that start with '^'} NextCh; if ch = '=' then begin token.kind := caroteqop; NextCh; end else token.kind := carotch; end; ch_asterisk: begin {tokens that start with '*'} NextCh; if ch = '=' then begin token.kind := asteriskeqop; NextCh; end else token.kind := asteriskch; end; ch_slash : begin {tokens that start with '/'} NextCh; if ch = '=' then begin token.kind := slasheqop; NextCh; end else token.kind := slashch; end; ch_dot : begin {tokens that start with '.'} if charKinds[ord(PeekCh)] = digit then DoNumber(false) else begin NextCh; if (ch = '.') and (PeekCh = '.') then begin token.kind := dotdotdotsy; NextCh; NextCh; end {if} else token.kind := dotch; end; {else} end; ch_colon : begin {tokens that start with ':'} NextCh; if ch = '>' then begin token.kind := rbrackch; {:> digraph} token.isDigraph := true; NextCh; end else token.kind := colonch; end; ch_char : CharConstant; {character constants} ch_string: begin {string constants} doingStringOrCharacter := true; {change character scanning} token.kind := stringconst; {set up the token} token.class := stringConstant; ispstring := false; {set up for the string scan} setLength := false; NextCh; {skip the opening "} {read the characters} if charStrPrefix = prefix_none then begin i := 0; new(sPtr,s100); while not (charKinds[ord(ch)] in [ch_string,ch_eol,ch_eof]) do begin i := i+1; if i = 101 then begin sPtr^.len1 := 100; new(tsPtr,s1000); CopyLongString(pointer(tsPtr), pointer(sPtr)); dispose(sPtr); sPtr := tsPtr; end {if} else if i = 1001 then begin sPtr^.len2 := 1000; new(tsPtr,sMAX); CopyLongString(pointer(tsPtr), pointer(sPtr)); dispose(sPtr); sPtr := tsPtr; end {else if} else if i = longstringlen then begin i := 1001; Error(90); end; {else if} sPtr^.str1[i] := chr(ord(EscapeCh)); if (i = 1) and ispstring then setLength := true; end; {while} end {if} else begin if charStrPrefix = prefix_L then begin charStrPrefix := prefix_u16; if not skipping then Error(167); end; {if} i := 1; new(sPtr,sMAX); while not (charKinds[ord(ch)] in [ch_string,ch_eol,ch_eof]) do begin if i > longstringlen-8 then begin {leave space for char and null} i := 1; Error(90); end; {if} codePoint := EscapeCh; if charStrPrefix = prefix_u8 then begin if octHexEscape then begin sPtr^.str1[i] := chr(ord(codePoint)); i := i+1; end {if} else begin UTF8Encode(codePoint, utf8); for j := 1 to utf8.length do begin sPtr^.str1[i] := chr(utf8.bytes[j]); i := i+1; end; {for} end; {else} end {if} else if charStrPrefix = prefix_u16 then begin c16ptr := pointer(@sPtr^.str1[i]); if octHexEscape then begin c16ptr^ := ord(codePoint); i := i+2; end {if} else begin UTF16Encode(codePoint, utf16); c16Ptr^ := utf16.codeUnits[1]; i := i+2; if utf16.length = 2 then begin c16ptr := pointer(@sPtr^.str1[i]); c16Ptr^ := utf16.codeUnits[2]; i := i+2; end; {if} end {else} end {else} else if charStrPrefix = prefix_U32 then begin c32ptr := pointer(@sPtr^.str1[i]); c32ptr^ := codePoint; i := i+4; end {else} end; {while} i := i-1; end; {else} doingStringOrCharacter := false; {process the end of the string} if ch = '"' then NextCh else Error(3); if setLength then {check for a p-string} if charStrPrefix <> prefix_none then begin if not skipping then Error(165); setLength := false; end {if} else sPtr^.str1[1] := chr(i-1); token.ispstring := setLength; sPtr^.len1 := i; {set the string length} token.sval := pointer(Malloc(i+6)); {put the string in the string pool} CopyLongString(token.sval, pointer(sPtr)); dispose(sPtr); token.sval^.str[i+1] := chr(0); {add null terminator} if charStrPrefix = prefix_u16 then begin token.sval^.str[i+2] := chr(0); token.sval^.length := i+2; end {if} else if charStrPrefix = prefix_U32 then begin token.sval^.str[i+2] := chr(0); token.sval^.str[i+3] := chr(0); token.sval^.str[i+4] := chr(0); token.sval^.length := i+4; end {else if} else token.sval^.length := i+1; token.prefix := charStrPrefix; {record prefix} charStrPrefix := prefix_none; {no prefix for next char/str (so far)} end; letter,ch_backslash: begin {reserved words and identifiers} token.kind := ident; token.class := identifier; token.name := @workString; tokenExpandEnabled := true; i := 0; while charKinds[ord(ch)] in [letter,digit,ch_backslash] do begin i := i+1; if ch = '\' then begin if PeekCh in ['u','U'] then begin NextCh; codePoint := UniversalCharacterName; if not ValidUCNForIdentifier(codePoint, i=1) then Error(149); chFromUCN := ConvertUCSToMacRoman(codePoint); if chFromUCN >= 0 then workString[i] := chr(chFromUCN) else begin for j := 1 to ord(ucnString[0]) do workString[i+j-1] := ucnString[j]; i := i + ord(ucnString[0]) - 1; end; {else} end {if} else begin i := i-1; goto 8; end; {else} end {if} else begin workString[i] := ch; NextCh; end; {if} end; {while} 8: workString[0] := chr(i); if i = 1 then begin {detect prefixed char/string literal} if charKinds[ord(ch)] in [ch_char,ch_string] then begin if workString[1] in ['L','u','U'] then begin if workString[1] = 'L' then charStrPrefix := prefix_L else if workString[1] = 'u' then charStrPrefix := prefix_u16 else if workString[1] = 'U' then charStrPrefix := prefix_U32; goto 6; end; {if} end; {if} end {if} else if i = 2 then if charKinds[ord(ch)] = ch_string then if workString = 'u8' then begin charStrPrefix := prefix_u8; goto 6; end; {if} if i = 0 then begin {\ preprocessing token} token.kind := otherch; token.class := otherCharacter; token.ch := ch; NextCh; end {if} else CheckIdentifier; end; digit : {numeric constants} DoNumber(false); ch_other: begin {other non-whitespace char (pp-token)} token.kind := otherch; token.class := otherCharacter; token.ch := ch; NextCh; if skipping or preprocessing then if not skipIllegalTokens then Error(1); end; otherwise: Error(57); end; {case} tokenEnd := currentChPtr; {record the end of the token} 2: if skipping then {conditional compilation branch} if not (token.kind in [eofsy,eolsy]) then goto 3; if (token.kind = stringconst) and not mergingStrings {handle adjacent strings} then repeat if reportEOL then begin while charKinds[ord(ch)] = ch_white do NextCh; if charKinds[ord(ch)] = ch_eol then goto 1; end; {if} tToken := token; lSuppressMacroExpansions := suppressMacroExpansions; suppressMacroExpansions := true; mergingStrings := true; NextToken; mergingStrings := false; suppressMacroExpansions := lSuppressMacroExpansions; if token.kind = stringconst then begin MergeStrings(tToken, token); done := false; end {if} else begin PutBackToken(token, tokenExpandEnabled, false); done := true; end; {else} token := tToken; until done; 1: if doingPPExpression then begin if token.class = reservedWord then begin token.name := @reservedWords[token.kind]; token.kind := ident; token.class := identifier; end; {if} if token.kind = typedef then token.kind := ident; end; {if} if printMacroExpansions then if not suppressMacroExpansions then if not suppressPrint then PrintToken(token); {print the token stream} if token.kind = otherch then if not (skipping or preprocessing or suppressMacroExpansions) or doingPPExpression then Error(1); end; {NextToken} procedure TermScanner; { Shut down the scanner. } begin {TermScanner} if ifList <> nil then Error(21); if numErr <> 0 then begin {write any pending errors} firstPtr := chPtr; WriteLine; end; {if} end; {TermScanner} end. {$append 'scanner.asm'}