Macintosh-SW/mpw
1
0
Fork 0
mirror of https://github.com/ksherlock/mpw.git synced 2024-11-08 15:05:14 +00:00
Code Issues Projects Releases Wiki Activity
d59a35d3a9
mpw/bin/template_parser.cpp
Stefan f619ed31b3
Fixed a few typos (#65)
2023-09-14 13:27:53 -04:00

1292 lines
44 KiB
C++
Raw Blame History

/*
** 2000-05-29
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
*************************************************************************
** Driver template for the LEMON parser generator.
**
** The "lemon" program processes an LALR(1) input grammar file, then uses
** this template to construct a parser. The "lemon" program inserts text
** at each "%%" line. Also, any "P-a-r-s-e" identifier prefix (without the
** interstitial "-" characters) contained in this template is changed into
** the value of the %name directive from the grammar. Otherwise, the content
** of this template is copied straight through into the generate parser
** source file.
**
** The following is the concatenation of all %include directives from the
** input grammar file:
*/
#include <stdio.h>
#include <assert.h>
/************ Begin %include sections from the grammar ************************/
#line 6 "template_parser.lemon"
#include <string>
#include <stdlib.h>
#include <cassert>
#include <cstddef>
#include "template.h"
using namespace Debug;
#line 40 "template_parser.c"
/**************** End of %include directives **********************************/
/* These constants specify the various numeric values for terminal symbols
** in a format understandable to "makeheaders". This section is blank unless
** "lemon" is run with the "-m" command-line option.
***************** Begin makeheaders token definitions *************************/
/**************** End makeheaders token definitions ***************************/
/* The next sections is a series of control #defines.
** various aspects of the generated parser.
** YYCODETYPE is the data type used to store the integer codes
** that represent terminal and non-terminal symbols.
** "unsigned char" is used if there are fewer than
** 256 symbols. Larger types otherwise.
** YYNOCODE is a number of type YYCODETYPE that is not used for
** any terminal or nonterminal symbol.
** YYFALLBACK If defined, this indicates that one or more tokens
** (also known as: "terminal symbols") have fall-back
** values which should be used if the original symbol
** would not parse. This permits keywords to sometimes
** be used as identifiers, for example.
** YYACTIONTYPE is the data type used for "action codes" - numbers
** that indicate what to do in response to the next
** token.
** TemplateParseTOKENTYPE is the data type used for minor type for terminal
** symbols. Background: A "minor type" is a semantic
** value associated with a terminal or non-terminal
** symbols. For example, for an "ID" terminal symbol,
** the minor type might be the name of the identifier.
** Each non-terminal can have a different minor type.
** Terminal symbols all have the same minor type, though.
** This macros defines the minor type for terminal
** symbols.
** YYMINORTYPE is the data type used for all minor types.
** This is typically a union of many types, one of
** which is TemplateParseTOKENTYPE. The entry in the union
** for terminal symbols is called "yy0".
** YYSTACKDEPTH is the maximum depth of the parser's stack. If
** zero the stack is dynamically sized using realloc()
** TemplateParseARG_SDECL A static variable declaration for the %extra_argument
** TemplateParseARG_PDECL A parameter declaration for the %extra_argument
** TemplateParseARG_STORE Code to store %extra_argument into yypParser
** TemplateParseARG_FETCH Code to extract %extra_argument from yypParser
** YYERRORSYMBOL is the code number of the error symbol. If not
** defined, then do no error processing.
** YYNSTATE the combined number of states.
** YYNRULE the number of rules in the grammar
** YY_MAX_SHIFT Maximum value for shift actions
** YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions
** YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions
** YY_MIN_REDUCE Maximum value for reduce actions
** YY_ERROR_ACTION The yy_action[] code for syntax error
** YY_ACCEPT_ACTION The yy_action[] code for accept
** YY_NO_ACTION The yy_action[] code for no-op
*/
#ifndef INTERFACE
# define INTERFACE 1
#endif
/************* Begin control #defines *****************************************/
#define YYCODETYPE unsigned char
#define YYNOCODE 36
#define YYACTIONTYPE unsigned char
#define TemplateParseTOKENTYPE void*
typedef union {
int yyinit;
TemplateParseTOKENTYPE yy0;
int yy32;
FieldEntry * yy51;
} YYMINORTYPE;
#ifndef YYSTACKDEPTH
#define YYSTACKDEPTH 100
#endif
#define TemplateParseARG_SDECL Debug::TemplateParseInfo *info ;
#define TemplateParseARG_PDECL , Debug::TemplateParseInfo *info
#define TemplateParseARG_FETCH Debug::TemplateParseInfo *info = yypParser->info
#define TemplateParseARG_STORE yypParser->info = info
#define YYNSTATE 26
#define YYNRULE 34
#define YY_MAX_SHIFT 25
#define YY_MIN_SHIFTREDUCE 50
#define YY_MAX_SHIFTREDUCE 83
#define YY_MIN_REDUCE 84
#define YY_MAX_REDUCE 117
#define YY_ERROR_ACTION 118
#define YY_ACCEPT_ACTION 119
#define YY_NO_ACTION 120
/************* End control #defines *******************************************/
/* Define the yytestcase() macro to be a no-op if is not already defined
** otherwise.
**
** Applications can choose to define yytestcase() in the %include section
** to a macro that can assist in verifying code coverage. For production
** code the yytestcase() macro should be turned off. But it is useful
** for testing.
*/
#ifndef yytestcase
# define yytestcase(X)
#endif
/* Next are the tables used to determine what action to take based on the
** current state and lookahead token. These tables are used to implement
** functions that take a state number and lookahead value and return an
** action integer.
**
** Suppose the action integer is N. Then the action is determined as
** follows
**
** 0 <= N <= YY_MAX_SHIFT Shift N. That is, push the lookahead
** token onto the stack and goto state N.
**
** N between YY_MIN_SHIFTREDUCE Shift to an arbitrary state then
** and YY_MAX_SHIFTREDUCE reduce by rule N-YY_MIN_SHIFTREDUCE.
**
** N between YY_MIN_REDUCE Reduce by rule N-YY_MIN_REDUCE
** and YY_MAX_REDUCE
**
** N == YY_ERROR_ACTION A syntax error has occurred.
**
** N == YY_ACCEPT_ACTION The parser accepts its input.
**
** N == YY_NO_ACTION No such action. Denotes unused
** slots in the yy_action[] table.
**
** The action table is constructed as a single large table named yy_action[].
** Given state S and lookahead X, the action is computed as either:
**
** (A) N = yy_action[ yy_shift_ofst[S] + X ]
** (B) N = yy_default[S]
**
** The (A) formula is preferred. The B formula is used instead if:
** (1) The yy_shift_ofst[S]+X value is out of range, or
** (2) yy_lookahead[yy_shift_ofst[S]+X] is not equal to X, or
** (3) yy_shift_ofst[S] equal YY_SHIFT_USE_DFLT.
** (Implementation note: YY_SHIFT_USE_DFLT is chosen so that
** YY_SHIFT_USE_DFLT+X will be out of range for all possible lookaheads X.
** Hence only tests (1) and (2) need to be evaluated.)
**
** The formulas above are for computing the action when the lookahead is
** a terminal symbol. If the lookahead is a non-terminal (as occurs after
** a reduce action) then the yy_reduce_ofst[] array is used in place of
** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of
** YY_SHIFT_USE_DFLT.
**
** The following are the tables generated in this section:
**
** yy_action[] A single table containing all actions.
** yy_lookahead[] A table containing the lookahead for each entry in
** yy_action. Used to detect hash collisions.
** yy_shift_ofst[] For each state, the offset into yy_action for
** shifting terminals.
** yy_reduce_ofst[] For each state, the offset into yy_action for
** shifting non-terminals after a reduce.
** yy_default[] Default action for each state.
**
*********** Begin parsing tables **********************************************/
#define YY_ACTTAB_COUNT (61)
static const YYACTIONTYPE yy_action[] = {
/* 0 */ 59, 86, 59, 119, 5, 10, 19, 79, 3, 100,
/* 10 */ 24, 13, 24, 13, 101, 70, 23, 70, 23, 2,
/* 20 */ 87, 108, 6, 17, 22, 19, 73, 3, 62, 64,
/* 30 */ 7, 63, 65, 8, 20, 92, 12, 109, 110, 14,
/* 40 */ 79, 25, 68, 4, 69, 55, 83, 15, 83, 18,
/* 50 */ 9, 57, 16, 54, 11, 51, 21, 1, 94, 71,
/* 60 */ 50,
};
static const YYCODETYPE yy_lookahead[] = {
/* 0 */ 2, 23, 2, 24, 25, 7, 28, 11, 30, 34,
/* 10 */ 12, 13, 12, 13, 34, 17, 18, 17, 18, 22,
/* 20 */ 23, 0, 1, 8, 3, 28, 19, 30, 14, 15,
/* 30 */ 16, 14, 15, 16, 5, 32, 33, 26, 27, 29,
/* 40 */ 11, 28, 16, 30, 16, 6, 20, 31, 20, 29,
/* 50 */ 2, 10, 9, 6, 2, 6, 2, 4, 2, 19,
/* 60 */ 2,
};
#define YY_SHIFT_USE_DFLT (61)
#define YY_SHIFT_COUNT (25)
#define YY_SHIFT_MIN (-4)
#define YY_SHIFT_MAX (58)
static const signed char yy_shift_ofst[] = {
/* 0 */ 61, -4, 29, -2, 0, 21, -4, 26, 28, 15,
/* 10 */ 7, 15, 14, 17, 39, 48, 41, 43, 47, 52,
/* 20 */ 49, 53, 54, 40, 56, 58,
};
#define YY_REDUCE_USE_DFLT (-26)
#define YY_REDUCE_COUNT (11)
#define YY_REDUCE_MIN (-25)
#define YY_REDUCE_MAX (20)
static const signed char yy_reduce_ofst[] = {
/* 0 */ -21, -3, -22, 3, 3, 11, 13, -25, -20, 10,
/* 10 */ 16, 20,
};
static const YYACTIONTYPE yy_default[] = {
/* 0 */ 111, 112, 112, 114, 114, 118, 112, 116, 116, 90,
/* 10 */ 106, 90, 118, 95, 118, 118, 118, 118, 118, 118,
/* 20 */ 118, 118, 118, 118, 115, 118,
};
/********** End of lemon-generated parsing tables *****************************/
/* The next table maps tokens (terminal symbols) into fallback tokens.
** If a construct like the following:
**
** %fallback ID X Y Z.
**
** appears in the grammar, then ID becomes a fallback token for X, Y,
** and Z. Whenever one of the tokens X, Y, or Z is input to the parser
** but it does not parse, the type of the token is changed to ID and
** the parse is retried before an error is thrown.
**
** This feature can be used, for example, to cause some keywords in a language
** to revert to identifiers if they keyword does not apply in the context where
** it appears.
*/
#ifdef YYFALLBACK
static const YYCODETYPE yyFallback[] = {
};
#endif /* YYFALLBACK */
/* The following structure represents a single element of the
** parser's stack. Information stored includes:
**
** + The state number for the parser at this level of the stack.
**
** + The value of the token stored at this level of the stack.
** (In other words, the "major" token.)
**
** + The semantic value stored at this level of the stack. This is
** the information used by the action routines in the grammar.
** It is sometimes called the "minor" token.
**
** After the "shift" half of a SHIFTREDUCE action, the stateno field
** actually contains the reduce action for the second half of the
** SHIFTREDUCE.
*/
struct yyStackEntry {
YYACTIONTYPE stateno; /* The state-number, or reduce action in SHIFTREDUCE */
YYCODETYPE major; /* The major token value. This is the code
** number for the token at this stack level */
YYMINORTYPE minor; /* The user-supplied minor token value. This
** is the value of the token */
};
typedef struct yyStackEntry yyStackEntry;
/* The state of the parser is completely contained in an instance of
** the following structure */
struct yyParser {
yyStackEntry *yytos; /* Pointer to top element of the stack */
#ifdef YYTRACKMAXSTACKDEPTH
int yyhwm; /* High-water mark of the stack */
#endif
#ifndef YYNOERRORRECOVERY
int yyerrcnt; /* Shifts left before out of the error */
#endif
TemplateParseARG_SDECL /* A place to hold %extra_argument */
#if YYSTACKDEPTH<=0
int yystksz; /* Current side of the stack */
yyStackEntry *yystack; /* The parser's stack */
yyStackEntry yystk0; /* First stack entry */
#else
yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */
yyStackEntry *yystackEnd; /* Last entry in the stack */
#endif
};
typedef struct yyParser yyParser;
#ifndef NDEBUG
#include <stdio.h>
static FILE *yyTraceFILE = 0;
static char *yyTracePrompt = 0;
#endif /* NDEBUG */
#ifndef NDEBUG
/*
** Turn parser tracing on by giving a stream to which to write the trace
** and a prompt to preface each trace message. Tracing is turned off
** by making either argument NULL
**
** Inputs:
** <ul>
** <li> A FILE* to which trace output should be written.
** If NULL, then tracing is turned off.
** <li> A prefix string written at the beginning of every
** line of trace output. If NULL, then tracing is
** turned off.
** </ul>
**
** Outputs:
** None.
*/
void TemplateParseTrace(FILE *TraceFILE, char *zTracePrompt){
yyTraceFILE = TraceFILE;
yyTracePrompt = zTracePrompt;
if( yyTraceFILE==0 ) yyTracePrompt = 0;
else if( yyTracePrompt==0 ) yyTraceFILE = 0;
}
#endif /* NDEBUG */
#ifndef NDEBUG
/* For tracing shifts, the names of all terminals and nonterminals
** are required. The following table supplies these names */
static const char *const yyTokenName[] = {
"$", "TYPEDEF", "IDENTIFIER", "STRUCT",
"LBRACE", "RBRACE", "SEMI", "TEMPLATE",
"LBRACKET", "INTEGER", "RBRACKET", "VOLATILE",
"SIGNED", "UNSIGNED", "CHAR", "SHORT",
"LONG", "TYPECODE", "VOID", "STAR",
"INT", "error", "struct_fields", "struct_field",
"start", "templates", "struct", "typedef",
"type", "array_count", "opt_volatile", "opt_star",
"typecode", "opt_signed", "opt_int",
};
#endif /* NDEBUG */
#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const yyRuleName[] = {
/* 0 */ "typedef ::= TYPEDEF type IDENTIFIER",
/* 1 */ "struct ::= STRUCT IDENTIFIER LBRACE struct_fields RBRACE SEMI",
/* 2 */ "struct_fields ::= struct_fields struct_field",
/* 3 */ "struct_fields ::= struct_field",
/* 4 */ "struct_field ::= type IDENTIFIER array_count SEMI",
/* 5 */ "struct_field ::= opt_volatile TEMPLATE opt_star IDENTIFIER array_count SEMI",
/* 6 */ "array_count ::=",
/* 7 */ "array_count ::= LBRACKET INTEGER RBRACKET",
/* 8 */ "type ::= opt_volatile typecode",
/* 9 */ "type ::= opt_volatile IDENTIFIER",
/* 10 */ "typecode ::= SIGNED",
/* 11 */ "typecode ::= UNSIGNED",
/* 12 */ "typecode ::= opt_signed CHAR",
/* 13 */ "typecode ::= UNSIGNED CHAR",
/* 14 */ "typecode ::= opt_signed SHORT",
/* 15 */ "typecode ::= UNSIGNED SHORT",
/* 16 */ "typecode ::= opt_signed LONG opt_int",
/* 17 */ "typecode ::= UNSIGNED LONG opt_int",
/* 18 */ "typecode ::= opt_signed LONG LONG",
/* 19 */ "typecode ::= UNSIGNED LONG LONG",
/* 20 */ "typecode ::= TYPECODE",
/* 21 */ "typecode ::= VOID STAR",
/* 22 */ "opt_star ::=",
/* 23 */ "opt_star ::= STAR",
/* 24 */ "start ::= templates",
/* 25 */ "templates ::= templates struct",
/* 26 */ "templates ::= templates typedef",
/* 27 */ "templates ::=",
/* 28 */ "opt_volatile ::=",
/* 29 */ "opt_volatile ::= VOLATILE",
/* 30 */ "opt_signed ::=",
/* 31 */ "opt_signed ::= SIGNED",
/* 32 */ "opt_int ::=",
/* 33 */ "opt_int ::= INT",
};
#endif /* NDEBUG */
#if YYSTACKDEPTH<=0
/*
** Try to increase the size of the parser stack. Return the number
** of errors. Return 0 on success.
*/
static int yyGrowStack(yyParser *p){
int newSize;
int idx;
yyStackEntry *pNew;
newSize = p->yystksz*2 + 100;
idx = p->yytos ? (int)(p->yytos - p->yystack) : 0;
if( p->yystack==&p->yystk0 ){
pNew = malloc(newSize*sizeof(pNew[0]));
if( pNew ) pNew[0] = p->yystk0;
}else{
pNew = realloc(p->yystack, newSize*sizeof(pNew[0]));
}
if( pNew ){
p->yystack = pNew;
p->yytos = &p->yystack[idx];
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sStack grows from %d to %d entries.\n",
yyTracePrompt, p->yystksz, newSize);
}
#endif
p->yystksz = newSize;
}
return pNew==0;
}
#endif
/* Datatype of the argument to the memory allocated passed as the
** second argument to TemplateParseAlloc() below. This can be changed by
** putting an appropriate #define in the %include section of the input
** grammar.
*/
#ifndef YYMALLOCARGTYPE
# define YYMALLOCARGTYPE size_t
#endif
/* Initialize a new parser that has already been allocated.
*/
void TemplateParseInit(void *yypParser){
yyParser *pParser = (yyParser*)yypParser;
#ifdef YYTRACKMAXSTACKDEPTH
pParser->yyhwm = 0;
#endif
#if YYSTACKDEPTH<=0
pParser->yytos = NULL;
pParser->yystack = NULL;
pParser->yystksz = 0;
if( yyGrowStack(pParser) ){
pParser->yystack = &pParser->yystk0;
pParser->yystksz = 1;
}
#endif
#ifndef YYNOERRORRECOVERY
pParser->yyerrcnt = -1;
#endif
pParser->yytos = pParser->yystack;
pParser->yystack[0].stateno = 0;
pParser->yystack[0].major = 0;
#if YYSTACKDEPTH>0
pParser->yystackEnd = &pParser->yystack[YYSTACKDEPTH-1];
#endif
}
#ifndef TemplateParse_ENGINEALWAYSONSTACK
/*
** This function allocates a new parser.
** The only argument is a pointer to a function which works like
** malloc.
**
** Inputs:
** A pointer to the function used to allocate memory.
**
** Outputs:
** A pointer to a parser. This pointer is used in subsequent calls
** to TemplateParse and TemplateParseFree.
*/
void *TemplateParseAlloc(void *(*mallocProc)(YYMALLOCARGTYPE)){
yyParser *pParser;
pParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) );
if( pParser ) TemplateParseInit(pParser);
return pParser;
}
#endif /* TemplateParse_ENGINEALWAYSONSTACK */
/* The following function deletes the "minor type" or semantic value
** associated with a symbol. The symbol can be either a terminal
** or nonterminal. "yymajor" is the symbol code, and "yypminor" is
** a pointer to the value to be deleted. The code used to do the
** deletions is derived from the %destructor and/or %token_destructor
** directives of the input grammar.
*/
static void yy_destructor(
yyParser *yypParser, /* The parser */
YYCODETYPE yymajor, /* Type code for object to destroy */
YYMINORTYPE *yypminor /* The object to be destroyed */
){
TemplateParseARG_FETCH;
switch( yymajor ){
/* Here is inserted the actions which take place when a
** terminal or non-terminal is destroyed. This can happen
** when the symbol is popped from the stack during a
** reduce or during error processing or when a parser is
** being destroyed before it is finished parsing.
**
** Note: during a reduce, the only symbols destroyed are those
** which appear on the RHS of the rule, but which are *not* used
** inside the C code.
*/
/********* Begin destructor definitions ***************************************/
/********* End destructor definitions *****************************************/
default: break; /* If no destructor action specified: do nothing */
}
}
/*
** Pop the parser's stack once.
**
** If there is a destructor routine associated with the token which
** is popped from the stack, then call it.
*/
static void yy_pop_parser_stack(yyParser *pParser){
yyStackEntry *yytos;
assert( pParser->yytos!=0 );
assert( pParser->yytos > pParser->yystack );
yytos = pParser->yytos--;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sPopping %s\n",
yyTracePrompt,
yyTokenName[yytos->major]);
}
#endif
yy_destructor(pParser, yytos->major, &yytos->minor);
}
/*
** Clear all secondary memory allocations from the parser
*/
void TemplateParseFinalize(void *p){
yyParser *pParser = (yyParser*)p;
while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser);
#if YYSTACKDEPTH<=0
if( pParser->yystack!=&pParser->yystk0 ) free(pParser->yystack);
#endif
}
#ifndef TemplateParse_ENGINEALWAYSONSTACK
/*
** Deallocate and destroy a parser. Destructors are called for
** all stack elements before shutting the parser down.
**
** If the YYPARSEFREENEVERNULL macro exists (for example because it
** is defined in a %include section of the input grammar) then it is
** assumed that the input pointer is never NULL.
*/
void TemplateParseFree(
void *p, /* The parser to be deleted */
void (*freeProc)(void*) /* Function used to reclaim memory */
){
#ifndef YYPARSEFREENEVERNULL
if( p==0 ) return;
#endif
TemplateParseFinalize(p);
(*freeProc)(p);
}
#endif /* TemplateParse_ENGINEALWAYSONSTACK */
/*
** Return the peak depth of the stack for a parser.
*/
#ifdef YYTRACKMAXSTACKDEPTH
int TemplateParseStackPeak(void *p){
yyParser *pParser = (yyParser*)p;
return pParser->yyhwm;
}
#endif
/*
** Find the appropriate action for a parser given the terminal
** look-ahead token iLookAhead.
*/
static unsigned int yy_find_shift_action(
yyParser *pParser, /* The parser */
YYCODETYPE iLookAhead /* The look-ahead token */
){
int i;
int stateno = pParser->yytos->stateno;
if( stateno>=YY_MIN_REDUCE ) return stateno;
assert( stateno <= YY_SHIFT_COUNT );
do{
i = yy_shift_ofst[stateno];
assert( iLookAhead!=YYNOCODE );
i += iLookAhead;
if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
YYCODETYPE iFallback; /* Fallback token */
if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
&& (iFallback = yyFallback[iLookAhead])!=0 ){
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
}
#endif
assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
iLookAhead = iFallback;
continue;
}
#endif
#ifdef YYWILDCARD
{
int j = i - iLookAhead + YYWILDCARD;
if(
#if YY_SHIFT_MIN+YYWILDCARD<0
j>=0 &&
#endif
#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT
j<YY_ACTTAB_COUNT &&
#endif
yy_lookahead[j]==YYWILDCARD && iLookAhead>0
){
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead],
yyTokenName[YYWILDCARD]);
}
#endif /* NDEBUG */
return yy_action[j];
}
}
#endif /* YYWILDCARD */
return yy_default[stateno];
}else{
return yy_action[i];
}
}while(1);
}
/*
** Find the appropriate action for a parser given the non-terminal
** look-ahead token iLookAhead.
*/
static int yy_find_reduce_action(
int stateno, /* Current state number */
YYCODETYPE iLookAhead /* The look-ahead token */
){
int i;
#ifdef YYERRORSYMBOL
if( stateno>YY_REDUCE_COUNT ){
return yy_default[stateno];
}
#else
assert( stateno<=YY_REDUCE_COUNT );
#endif
i = yy_reduce_ofst[stateno];
assert( i!=YY_REDUCE_USE_DFLT );
assert( iLookAhead!=YYNOCODE );
i += iLookAhead;
#ifdef YYERRORSYMBOL
if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
return yy_default[stateno];
}
#else
assert( i>=0 && i<YY_ACTTAB_COUNT );
assert( yy_lookahead[i]==iLookAhead );
#endif
return yy_action[i];
}
/*
** The following routine is called if the stack overflows.
*/
static void yyStackOverflow(yyParser *yypParser){
TemplateParseARG_FETCH;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt);
}
#endif
while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
/* Here code is inserted which will execute if the parser
** stack every overflows */
/******** Begin %stack_overflow code ******************************************/
/******** End %stack_overflow code ********************************************/
TemplateParseARG_STORE; /* Suppress warning about unused %extra_argument var */
}
/*
** Print tracing information for a SHIFT action
*/
#ifndef NDEBUG
static void yyTraceShift(yyParser *yypParser, int yyNewState){
if( yyTraceFILE ){
if( yyNewState<YYNSTATE ){
fprintf(yyTraceFILE,"%sShift '%s', go to state %d\n",
yyTracePrompt,yyTokenName[yypParser->yytos->major],
yyNewState);
}else{
fprintf(yyTraceFILE,"%sShift '%s'\n",
yyTracePrompt,yyTokenName[yypParser->yytos->major]);
}
}
}
#else
# define yyTraceShift(X,Y)
#endif
/*
** Perform a shift action.
*/
static void yy_shift(
yyParser *yypParser, /* The parser to be shifted */
int yyNewState, /* The new state to shift in */
int yyMajor, /* The major token to shift in */
TemplateParseTOKENTYPE yyMinor /* The minor token to shift in */
){
yyStackEntry *yytos;
yypParser->yytos++;
#ifdef YYTRACKMAXSTACKDEPTH
if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack) );
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yytos>yypParser->yystackEnd ){
yypParser->yytos--;
yyStackOverflow(yypParser);
return;
}
#else
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz] ){
if( yyGrowStack(yypParser) ){
yypParser->yytos--;
yyStackOverflow(yypParser);
return;
}
}
#endif
if( yyNewState > YY_MAX_SHIFT ){
yyNewState += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
}
yytos = yypParser->yytos;
yytos->stateno = (YYACTIONTYPE)yyNewState;
yytos->major = (YYCODETYPE)yyMajor;
yytos->minor.yy0 = yyMinor;
yyTraceShift(yypParser, yyNewState);
}
/* The following table contains information about every rule that
** is used during the reduce.
*/
static const struct {
YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */
signed char nrhs; /* Negative of the number of RHS symbols in the rule */
} yyRuleInfo[] = {
{ 27, -3 },
{ 26, -6 },
{ 22, -2 },
{ 22, -1 },
{ 23, -4 },
{ 23, -6 },
{ 29, 0 },
{ 29, -3 },
{ 28, -2 },
{ 28, -2 },
{ 32, -1 },
{ 32, -1 },
{ 32, -2 },
{ 32, -2 },
{ 32, -2 },
{ 32, -2 },
{ 32, -3 },
{ 32, -3 },
{ 32, -3 },
{ 32, -3 },
{ 32, -1 },
{ 32, -2 },
{ 31, 0 },
{ 31, -1 },
{ 24, -1 },
{ 25, -2 },
{ 25, -2 },
{ 25, 0 },
{ 30, 0 },
{ 30, -1 },
{ 33, 0 },
{ 33, -1 },
{ 34, 0 },
{ 34, -1 },
};
static void yy_accept(yyParser*); /* Forward Declaration */
/*
** Perform a reduce action and the shift that must immediately
** follow the reduce.
*/
static void yy_reduce(
yyParser *yypParser, /* The parser */
unsigned int yyruleno /* Number of the rule by which to reduce */
){
int yygoto; /* The next state */
int yyact; /* The next action */
yyStackEntry *yymsp; /* The top of the parser's stack */
int yysize; /* Amount to pop the stack */
TemplateParseARG_FETCH;
yymsp = yypParser->yytos;
#ifndef NDEBUG
if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){
yysize = yyRuleInfo[yyruleno].nrhs;
fprintf(yyTraceFILE, "%sReduce [%s], go to state %d.\n", yyTracePrompt,
yyRuleName[yyruleno], yymsp[yysize].stateno);
}
#endif /* NDEBUG */
/* Check that the stack is large enough to grow by a single entry
** if the RHS of the rule is empty. This ensures that there is room
** enough on the stack to push the LHS value */
if( yyRuleInfo[yyruleno].nrhs==0 ){
#ifdef YYTRACKMAXSTACKDEPTH
if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack));
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yytos>=yypParser->yystackEnd ){
yyStackOverflow(yypParser);
return;
}
#else
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){
if( yyGrowStack(yypParser) ){
yyStackOverflow(yypParser);
return;
}
yymsp = yypParser->yytos;
}
#endif
}
switch( yyruleno ){
/* Beginning here are the reduction cases. A typical example
** follows:
** case 0:
** #line <lineno> <grammarfile>
** { ... } // User supplied code
** #line <lineno> <thisfile>
** break;
*/
/********** Begin reduce actions **********************************************/
YYMINORTYPE yylhsminor;
case 0: /* typedef ::= TYPEDEF type IDENTIFIER */
#line 29 "template_parser.lemon"
{
CreateTypedef((std::string *)yymsp[0].minor.yy0, yymsp[-1].minor.yy32, info);
}
#line 863 "template_parser.c"
break;
case 1: /* struct ::= STRUCT IDENTIFIER LBRACE struct_fields RBRACE SEMI */
#line 34 "template_parser.lemon"
{
CreateTemplate((std::string *)yymsp[-4].minor.yy0, yymsp[-2].minor.yy51, info);
}
#line 870 "template_parser.c"
break;
case 2: /* struct_fields ::= struct_fields struct_field */
#line 38 "template_parser.lemon"
{
// reverse order?
yymsp[0].minor.yy51->next = yymsp[-1].minor.yy51;
yylhsminor.yy51 = yymsp[0].minor.yy51;
}
#line 879 "template_parser.c"
yymsp[-1].minor.yy51 = yylhsminor.yy51;
break;
case 3: /* struct_fields ::= struct_field */
#line 44 "template_parser.lemon"
{
yylhsminor.yy51 = yymsp[0].minor.yy51;
}
#line 887 "template_parser.c"
yymsp[0].minor.yy51 = yylhsminor.yy51;
break;
case 4: /* struct_field ::= type IDENTIFIER array_count SEMI */
#line 49 "template_parser.lemon"
{
FieldEntry *e = (FieldEntry *)calloc(sizeof(FieldEntry), 1);
e->name = (std::string *)yymsp[-2].minor.yy0;
e->type = yymsp[-3].minor.yy32;
e->count = yymsp[-1].minor.yy32;
yylhsminor.yy51 = e;
}
#line 900 "template_parser.c"
yymsp[-3].minor.yy51 = yylhsminor.yy51;
break;
case 5: /* struct_field ::= opt_volatile TEMPLATE opt_star IDENTIFIER array_count SEMI */
#line 58 "template_parser.lemon"
{
FieldEntry *e = (FieldEntry *)calloc(sizeof(FieldEntry), 1);
e->name = (std::string *)yymsp[-2].minor.yy0;
e->type = yymsp[-3].minor.yy32 ? kStructPtr : kStruct;
e->tmpl = (Template)yymsp[-4].minor.yy0;
e->count = yymsp[-1].minor.yy32;
yymsp[-5].minor.yy51 = e;
}
#line 915 "template_parser.c"
break;
case 6: /* array_count ::= */
case 22: /* opt_star ::= */ yytestcase(yyruleno==22);
#line 70 "template_parser.lemon"
{ yymsp[1].minor.yy32 = 0; }
#line 921 "template_parser.c"
break;
case 7: /* array_count ::= LBRACKET INTEGER RBRACKET */
#line 71 "template_parser.lemon"
{
int i = (int)(ptrdiff_t)yymsp[-1].minor.yy0;
if (i == 0) {
fprintf(stderr, "Template error: line %u: 0-sized arrays are not allowed.\n",
info->LineNumber);
i = 1;
}
yymsp[-2].minor.yy32 = i;
}
#line 934 "template_parser.c"
break;
case 8: /* type ::= opt_volatile typecode */
#line 82 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = yymsp[0].minor.yy32; }
#line 939 "template_parser.c"
break;
case 9: /* type ::= opt_volatile IDENTIFIER */
#line 85 "template_parser.lemon"
{
// ugh, Lemon will blindly replace text within a string.
fprintf(stderr, "Template error: line %u: %s is not a known type.\n",
info->LineNumber, ((std::string *)yymsp[0].minor.yy0)->c_str());
yymsp[-1].minor.yy32 = 'i';
}
#line 951 "template_parser.c"
break;
case 10: /* typecode ::= SIGNED */
#line 100 "template_parser.lemon"
{ yymsp[0].minor.yy32 = kSInt32; }
#line 956 "template_parser.c"
break;
case 11: /* typecode ::= UNSIGNED */
#line 101 "template_parser.lemon"
{yymsp[0].minor.yy32 = kUInt32; }
#line 961 "template_parser.c"
break;
case 12: /* typecode ::= opt_signed CHAR */
#line 103 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = kSInt8; }
#line 966 "template_parser.c"
break;
case 13: /* typecode ::= UNSIGNED CHAR */
#line 104 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = kUInt8; }
#line 971 "template_parser.c"
break;
case 14: /* typecode ::= opt_signed SHORT */
#line 106 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = kSInt16; }
#line 976 "template_parser.c"
break;
case 15: /* typecode ::= UNSIGNED SHORT */
#line 107 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = kUInt16; }
#line 981 "template_parser.c"
break;
case 16: /* typecode ::= opt_signed LONG opt_int */
#line 109 "template_parser.lemon"
{ yymsp[-2].minor.yy32 = kSInt32; }
#line 986 "template_parser.c"
break;
case 17: /* typecode ::= UNSIGNED LONG opt_int */
#line 110 "template_parser.lemon"
{ yymsp[-2].minor.yy32 = kUInt32; }
#line 991 "template_parser.c"
break;
case 18: /* typecode ::= opt_signed LONG LONG */
#line 112 "template_parser.lemon"
{ yymsp[-2].minor.yy32 = kSInt64; }
#line 996 "template_parser.c"
break;
case 19: /* typecode ::= UNSIGNED LONG LONG */
#line 113 "template_parser.lemon"
{ yymsp[-2].minor.yy32 = kUInt64; }
#line 1001 "template_parser.c"
break;
case 20: /* typecode ::= TYPECODE */
#line 115 "template_parser.lemon"
{ yylhsminor.yy32 = (int)(ptrdiff_t)yymsp[0].minor.yy0; }
#line 1006 "template_parser.c"
yymsp[0].minor.yy32 = yylhsminor.yy32;
break;
case 21: /* typecode ::= VOID STAR */
#line 118 "template_parser.lemon"
{ yymsp[-1].minor.yy32 = kVoidPtr; }
#line 1012 "template_parser.c"
break;
case 23: /* opt_star ::= STAR */
#line 128 "template_parser.lemon"
{ yymsp[0].minor.yy32 = 1; }
#line 1017 "template_parser.c"
break;
default:
/* (24) start ::= templates */ yytestcase(yyruleno==24);
/* (25) templates ::= templates struct */ yytestcase(yyruleno==25);
/* (26) templates ::= templates typedef */ yytestcase(yyruleno==26);
/* (27) templates ::= */ yytestcase(yyruleno==27);
/* (28) opt_volatile ::= */ yytestcase(yyruleno==28);
/* (29) opt_volatile ::= VOLATILE */ yytestcase(yyruleno==29);
/* (30) opt_signed ::= */ yytestcase(yyruleno==30);
/* (31) opt_signed ::= SIGNED */ yytestcase(yyruleno==31);
/* (32) opt_int ::= */ yytestcase(yyruleno==32);
/* (33) opt_int ::= INT */ yytestcase(yyruleno==33);
break;
/********** End reduce actions ************************************************/
};
assert( yyruleno<sizeof(yyRuleInfo)/sizeof(yyRuleInfo[0]) );
yygoto = yyRuleInfo[yyruleno].lhs;
yysize = yyRuleInfo[yyruleno].nrhs;
yyact = yy_find_reduce_action(yymsp[yysize].stateno,(YYCODETYPE)yygoto);
/* There are no SHIFTREDUCE actions on nonterminals because the table
** generator has simplified them to pure REDUCE actions. */
assert( !(yyact>YY_MAX_SHIFT && yyact<=YY_MAX_SHIFTREDUCE) );
/* It is not possible for a REDUCE to be followed by an error */
assert( yyact!=YY_ERROR_ACTION );
if( yyact==YY_ACCEPT_ACTION ){
yypParser->yytos += yysize;
yy_accept(yypParser);
}else{
yymsp += yysize+1;
yypParser->yytos = yymsp;
yymsp->stateno = (YYACTIONTYPE)yyact;
yymsp->major = (YYCODETYPE)yygoto;
yyTraceShift(yypParser, yyact);
}
}
/*
** The following code executes when the parse fails
*/
#ifndef YYNOERRORRECOVERY
static void yy_parse_failed(
yyParser *yypParser /* The parser */
){
TemplateParseARG_FETCH;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt);
}
#endif
while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
/* Here code is inserted which will be executed whenever the
** parser fails */
/************ Begin %parse_failure code ***************************************/
/************ End %parse_failure code *****************************************/
TemplateParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
}
#endif /* YYNOERRORRECOVERY */
/*
** The following code executes when a syntax error first occurs.
*/
static void yy_syntax_error(
yyParser *yypParser, /* The parser */
int yymajor, /* The major type of the error token */
TemplateParseTOKENTYPE yyminor /* The minor type of the error token */
){
TemplateParseARG_FETCH;
#define TOKEN yyminor
/************ Begin %syntax_error code ****************************************/
/************ End %syntax_error code ******************************************/
TemplateParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
}
/*
** The following is executed when the parser accepts
*/
static void yy_accept(
yyParser *yypParser /* The parser */
){
TemplateParseARG_FETCH;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt);
}
#endif
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
assert( yypParser->yytos==yypParser->yystack );
/* Here code is inserted which will be executed whenever the
** parser accepts */
/*********** Begin %parse_accept code *****************************************/
/*********** End %parse_accept code *******************************************/
TemplateParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
}
/* The main parser program.
** The first argument is a pointer to a structure obtained from
** "TemplateParseAlloc" which describes the current state of the parser.
** The second argument is the major token number. The third is
** the minor token. The fourth optional argument is whatever the
** user wants (and specified in the grammar) and is available for
** use by the action routines.
**
** Inputs:
** <ul>
** <li> A pointer to the parser (an opaque structure.)
** <li> The major token number.
** <li> The minor token number.
** <li> An option argument of a grammar-specified type.
** </ul>
**
** Outputs:
** None.
*/
void TemplateParse(
void *yyp, /* The parser */
int yymajor, /* The major token code number */
TemplateParseTOKENTYPE yyminor /* The value for the token */
TemplateParseARG_PDECL /* Optional %extra_argument parameter */
){
YYMINORTYPE yyminorunion;
unsigned int yyact; /* The parser action. */
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
int yyendofinput; /* True if we are at the end of input */
#endif
#ifdef YYERRORSYMBOL
int yyerrorhit = 0; /* True if yymajor has invoked an error */
#endif
yyParser *yypParser; /* The parser */
yypParser = (yyParser*)yyp;
assert( yypParser->yytos!=0 );
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
yyendofinput = (yymajor==0);
#endif
TemplateParseARG_STORE;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sInput '%s'\n",yyTracePrompt,yyTokenName[yymajor]);
}
#endif
do{
yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);
if( yyact <= YY_MAX_SHIFTREDUCE ){
yy_shift(yypParser,yyact,yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt--;
#endif
yymajor = YYNOCODE;
}else if( yyact <= YY_MAX_REDUCE ){
yy_reduce(yypParser,yyact-YY_MIN_REDUCE);
}else{
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
int yymx;
#endif
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt);
}
#endif
#ifdef YYERRORSYMBOL
/* A syntax error has occurred.
** The response to an error depends upon whether or not the
** grammar defines an error token "ERROR".
**
** This is what we do if the grammar does define ERROR:
**
** * Call the %syntax_error function.
**
** * Begin popping the stack until we enter a state where
** it is legal to shift the error symbol, then shift
** the error symbol.
**
** * Set the error count to three.
**
** * Begin accepting and shifting new tokens. No new error
** processing will occur until three tokens have been
** shifted successfully.
**
*/
if( yypParser->yyerrcnt<0 ){
yy_syntax_error(yypParser,yymajor,yyminor);
}
yymx = yypParser->yytos->major;
if( yymx==YYERRORSYMBOL || yyerrorhit ){
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sDiscard input token %s\n",
yyTracePrompt,yyTokenName[yymajor]);
}
#endif
yy_destructor(yypParser, (YYCODETYPE)yymajor, &yyminorunion);
yymajor = YYNOCODE;
}else{
while( yypParser->yytos >= yypParser->yystack
&& yymx != YYERRORSYMBOL
&& (yyact = yy_find_reduce_action(
yypParser->yytos->stateno,
YYERRORSYMBOL)) >= YY_MIN_REDUCE
){
yy_pop_parser_stack(yypParser);
}
if( yypParser->yytos < yypParser->yystack || yymajor==0 ){
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
yymajor = YYNOCODE;
}else if( yymx!=YYERRORSYMBOL ){
yy_shift(yypParser,yyact,YYERRORSYMBOL,yyminor);
}
}
yypParser->yyerrcnt = 3;
yyerrorhit = 1;
#elif defined(YYNOERRORRECOVERY)
/* If the YYNOERRORRECOVERY macro is defined, then do not attempt to
** do any kind of error recovery. Instead, simply invoke the syntax
** error routine and continue going as if nothing had happened.
**
** Applications can set this macro (for example inside %include) if
** they intend to abandon the parse upon the first syntax error seen.
*/
yy_syntax_error(yypParser,yymajor, yyminor);
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
yymajor = YYNOCODE;
#else /* YYERRORSYMBOL is not defined */
/* This is what we do if the grammar does not define ERROR:
**
** * Report an error message, and throw away the input token.
**
** * If the input token is $, then fail the parse.
**
** As before, subsequent error messages are suppressed until
** three input tokens have been successfully shifted.
*/
if( yypParser->yyerrcnt<=0 ){
yy_syntax_error(yypParser,yymajor, yyminor);
}
yypParser->yyerrcnt = 3;
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
if( yyendofinput ){
yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
}
yymajor = YYNOCODE;
#endif
}
}while( yymajor!=YYNOCODE && yypParser->yytos>yypParser->yystack );
#ifndef NDEBUG
if( yyTraceFILE ){
yyStackEntry *i;
char cDiv = '[';
fprintf(yyTraceFILE,"%sReturn. Stack=",yyTracePrompt);
for(i=&yypParser->yystack[1]; i<=yypParser->yytos; i++){
fprintf(yyTraceFILE,"%c%s", cDiv, yyTokenName[i->major]);
cDiv = ' ';
}
if (cDiv == '[') fprintf(yyTraceFILE,"[");
fprintf(yyTraceFILE,"]\n");
}
#endif
return;
}
Reference in New Issue View Git Blame Copy Permalink