mirror of
https://github.com/c64scene-ar/llvm-6502.git
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Convert over to the new way of handling lex/bison checked into cvs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26209 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
bdd3c1604e
commit
fb4ab00d09
234
projects/Stacker/lib/compiler/Lexer.l.cvs
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234
projects/Stacker/lib/compiler/Lexer.l.cvs
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/*===-- Lexer.l - Scanner for Stacker language -----------------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and donated to the LLVM research
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// group and is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the flex scanner for Stacker languages files.
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//
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//===----------------------------------------------------------------------===*/
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%option prefix="Stacker"
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%option yylineno
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%option nostdinit
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%option never-interactive
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%option batch
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%option noyywrap
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%option nodefault
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%option 8bit
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%option outfile="Lexer.cpp"
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%option ecs
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%option noreject
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%option noyymore
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%{
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#include "StackerCompiler.h"
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#include "StackerParser.h"
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/* Conversion of text ints to binary */
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static int64_t IntToVal(const char *Buffer) {
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int64_t Result = 0;
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for (; *Buffer; Buffer++) {
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int64_t OldRes = Result;
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Result *= 10;
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Result += *Buffer-'0';
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if (Result < OldRes) // Uh, oh, overflow detected!!!
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StackerCompiler::ThrowException("constant bigger than 64 bits detected!");
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}
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return Result;
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}
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/* Conversion of text hexadecimal ints to binary */
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static int64_t HexIntToVal(const char *Buffer) {
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int64_t Result = 0;
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for (; *Buffer; ++Buffer) {
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int64_t OldRes = Result;
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Result *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Result += C-'0';
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else if (C >= 'A' && C <= 'F')
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Result += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Result += C-'a'+10;
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if (Result < OldRes) // Uh, oh, overflow detected!!!
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StackerCompiler::ThrowException("constant bigger than 64 bits detected!");
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}
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return Result;
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}
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#define YY_NEVER_INTERACTIVE 1
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%}
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/* Comments start with a ; and go till end of line */
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Comment1 [#].*$
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/* You can also embed them in ( ... ) */
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Comment2 \(.*\)
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/* We ignore white space */
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White [ \t\r\n]
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/* jdentifiers start with a % sign */
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Identifier [A-Za-z][-A-Za-z0-9_]*
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/* Strings can contain any character except " and \ */
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String \"[^\"]*\"
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/* Positive and negative integer constants*/
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PInteger [+]?[0-9]+
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NInteger -[0-9]+
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HexInteger 0x[0-9A-Fa-f]+
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/* Special Characters - name them to avoid flex confusion */
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Semi [;]
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Colon [:]
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Less \<
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More \>
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LessEq \<\=
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MoreEq \>\=
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NotEq \<\>
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Equal \=
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Plus \+
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Minus \-
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Incr \+\+
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Decr \-\-
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Mult \*
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Div \/
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StarSlash \*\/
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LShift \<\<
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RShift \>\>
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InStr \<s
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InNum \<d
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InChar \<c
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OutStr \>s
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OutNum \>d
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OutChar \>c
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%%
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{Comment1} { /* Ignore comments */ }
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{Comment2} { /* Ignore comments */ }
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{Colon} { return COLON; }
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{Semi} { return SEMI; }
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TRUE { return TRUETOK; }
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FALSE { return FALSETOK; }
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ON { return TRUETOK; }
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OFF { return FALSETOK; }
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{Less} { return LESS; }
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LT { return LESS; }
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{More} { return MORE; }
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GT { return MORE; }
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{LessEq} { return LESS_EQUAL; }
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LE { return LESS_EQUAL; }
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{MoreEq} { return MORE_EQUAL; }
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GE { return MORE_EQUAL; }
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{NotEq} { return NOT_EQUAL; }
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NE { return NOT_EQUAL; }
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{Equal} { return EQUAL; }
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EQ { return EQUAL; }
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{Plus} { return PLUS; }
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{Minus} { return MINUS; }
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{Incr} { return INCR; }
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{Decr} { return DECR; }
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{Mult} { return MULT; }
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{Div} { return DIV; }
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MOD { return MODULUS; }
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NEG { return NEGATE; }
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ABS { return ABS; }
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MIN { return MIN; }
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MAX { return MAX; }
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{StarSlash} { return STAR_SLASH; }
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AND { return AND; }
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OR { return OR; }
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XOR { return XOR; }
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{LShift} { return LSHIFT; }
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{RShift} { return RSHIFT; }
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DROP { return DROP; }
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NIP { return NIP; }
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DUP { return DUP; }
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SWAP { return SWAP; }
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OVER { return OVER; }
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PICK { return PICK; }
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SELECT { return SELECT; }
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ROT { return ROT; }
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RROT { return RROT; }
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ROLL { return ROLL; }
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TUCK { return TUCK; }
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DROP2 { return DROP2; }
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NIP2 { return NIP2; }
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DUP2 { return DUP2; }
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SWAP2 { return SWAP2; }
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OVER2 { return OVER2; }
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TUCK2 { return TUCK2; }
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ROT2 { return ROT2; }
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RROT2 { return RROT2; }
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MALLOC { return MALLOC; }
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FREE { return FREE; }
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GET { return GET; }
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PUT { return PUT; }
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IF { return IF; }
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ELSE { return ELSE; }
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ENDIF { return ENDIF; }
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WHILE { return WHILE; }
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END { return END; }
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RECURSE { return RECURSE; }
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RETURN { return RETURN; }
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EXIT { return EXIT; }
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FORWARD { return FORWARD; }
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TAB { return TAB; }
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SPACE { return SPACE; }
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CR { return CR; }
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{InStr} { return IN_STR; }
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{InNum} { return IN_NUM; }
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{InChar} { return IN_CHAR; }
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{OutStr} { return OUT_STR; }
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{OutNum} { return OUT_NUM; }
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{OutChar} { return OUT_CHAR; }
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MAIN { return MAIN; }
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DUMP { return DUMP; }
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!= { StackerCompiler::ThrowException(
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"You probably meant to use a <> instead of !=" ); }
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== { StackerCompiler::ThrowException(
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"You probably meant to use a single = .. this isn't C"); }
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{PInteger} { Stackerlval.IntegerVal = IntToVal(yytext); return INTEGER; }
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{NInteger} { uint64_t Val = IntToVal(yytext+1);
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// +1: we have bigger negative range
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if (Val > (uint64_t)INT64_MAX+1)
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StackerCompiler::ThrowException(
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"Constant too large for signed 64 bits!");
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Stackerlval.IntegerVal = -Val;
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return INTEGER;
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}
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{HexInteger} { Stackerlval.IntegerVal = HexIntToVal(yytext+3);
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return INTEGER;
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}
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{String} { yytext[strlen(yytext)-1] = 0; // nuke end quote
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Stackerlval.StringVal = strdup(yytext+1); // Nuke start quote
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return STRING;
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}
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{Identifier} { Stackerlval.StringVal = strdup(yytext); return IDENTIFIER; }
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{White} { /* Ignore whitespace */ }
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%%
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185
projects/Stacker/lib/compiler/StackerParser.y.cvs
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185
projects/Stacker/lib/compiler/StackerParser.y.cvs
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//===-- StackerParser.y - Parser for Stacker programs -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the bison parser for Stacker programs.
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//
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//===----------------------------------------------------------------------===//
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%{
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#include "StackerCompiler.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Module.h"
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#include "llvm/Instructions.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/DepthFirstIterator.h"
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#include <list>
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#include <utility>
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#include <algorithm>
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#define YYERROR_VERBOSE 1
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#define SCI StackerCompiler::TheInstance
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int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
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int yylex(); // declaration" of xxx warnings.
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int yyparse();
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%}
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%union
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{
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llvm::Module* ModuleVal;
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llvm::Function* FunctionVal;
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llvm::BasicBlock* BasicBlockVal;
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int64_t IntegerVal;
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char* StringVal;
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}
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/* Typed Productions */
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%type <ModuleVal> Module DefinitionList
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%type <FunctionVal> Definition ForwardDef ColonDef MainDef
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%type <FunctionVal> WordList
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%type <BasicBlockVal> Word
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/* Typed Tokens */
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%token <IntegerVal> INTEGER
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%token <StringVal> STRING IDENTIFIER
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/* Terminal Tokens */
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%token SEMI COLON FORWARD MAIN DUMP
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%token TRUETOK FALSETOK LESS MORE LESS_EQUAL MORE_EQUAL NOT_EQUAL EQUAL
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%token PLUS MINUS INCR DECR MULT DIV MODULUS NEGATE ABS MIN MAX STAR_SLASH
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%token AND OR XOR LSHIFT RSHIFT
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%token DROP DROP2 NIP NIP2 DUP DUP2 SWAP SWAP2 OVER OVER2 ROT ROT2
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%token RROT RROT2 TUCK TUCK2 ROLL PICK SELECT
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%token MALLOC FREE GET PUT
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%token IF ELSE ENDIF WHILE END RECURSE RETURN EXIT
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%token TAB SPACE CR IN_STR IN_NUM IN_CHAR OUT_STR OUT_NUM OUT_CHAR
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/* Start Token */
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%start Module
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%%
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/* A module is just a DefinitionList */
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Module : { SCI->handle_module_start( ); }
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DefinitionList { $$ = SCI->handle_module_end( $2 ); } ;
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/* A Definitionlist is just a sequence of definitions */
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DefinitionList : DefinitionList Definition { $$ = SCI->handle_definition_list_end( $1, $2 ); }
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| /* empty */ { $$ = SCI->handle_definition_list_start(); } ;
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/* A definition can be one of three flavors */
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Definition : ForwardDef { $$ = $1; }
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| ColonDef { $$ = $1; }
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| MainDef { $$ = $1; } ;
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/* Forward definitions just introduce a name */
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ForwardDef : FORWARD IDENTIFIER SEMI { $$ = SCI->handle_forward( $2 ); } ;
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/* The main definition has to generate additional code so we treat it specially */
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MainDef : COLON MAIN WordList SEMI { $$ = SCI->handle_main_definition($3); } ;
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/* Regular definitions have a name and a WordList */
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ColonDef : COLON IDENTIFIER WordList SEMI { $$ = SCI->handle_definition( $2, $3 ); } ;
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/* A WordList is just a sequence of words */
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WordList : WordList Word { $$ = SCI->handle_word_list_end( $1, $2 ); }
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| /* empty */ { $$ = SCI->handle_word_list_start(); } ;
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/* A few "words" have a funky syntax */
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/* FIXME: The body of compound words can currently only be function calls */
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/* This is not acceptable, it should be a WordList, but that produces a Function */
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/* Which is hard to merge into the function the compound statement is working on */
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Word : IF IDENTIFIER ELSE IDENTIFIER ENDIF { $$ = SCI->handle_if( $2, $4 ); }
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| IF IDENTIFIER ENDIF { $$ = SCI->handle_if( $2 ); }
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| WHILE IDENTIFIER END { $$ = SCI->handle_while( $2 ); } ;
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/* A few words are handled specially */
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Word : IDENTIFIER { $$ = SCI->handle_identifier( $1 ); } ;
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Word : STRING { $$ = SCI->handle_string( $1 ); } ;
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Word : INTEGER { $$ = SCI->handle_integer( $1 ); } ;
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/* Everything else is a terminal symbol and goes to handle_word */
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Word : TRUETOK { $$ = SCI->handle_word( TRUETOK ); } ;
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Word : FALSETOK { $$ = SCI->handle_word( FALSETOK ); } ;
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Word : LESS { $$ = SCI->handle_word( LESS ); } ;
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Word : MORE { $$ = SCI->handle_word( MORE ); } ;
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Word : LESS_EQUAL { $$ = SCI->handle_word( LESS_EQUAL ); } ;
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Word : MORE_EQUAL { $$ = SCI->handle_word( MORE_EQUAL ); } ;
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Word : NOT_EQUAL { $$ = SCI->handle_word( NOT_EQUAL ); } ;
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Word : EQUAL { $$ = SCI->handle_word( EQUAL ); } ;
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Word : PLUS { $$ = SCI->handle_word( PLUS ); } ;
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Word : MINUS { $$ = SCI->handle_word( MINUS ); } ;
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Word : INCR { $$ = SCI->handle_word( INCR ); } ;
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Word : DECR { $$ = SCI->handle_word( DECR ); } ;
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Word : MULT { $$ = SCI->handle_word( MULT ); } ;
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Word : DIV { $$ = SCI->handle_word( DIV ); } ;
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Word : MODULUS { $$ = SCI->handle_word( MODULUS ); } ;
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Word : NEGATE { $$ = SCI->handle_word( NEGATE ); } ;
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Word : ABS { $$ = SCI->handle_word( ABS ); } ;
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Word : MIN { $$ = SCI->handle_word( MIN ); } ;
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Word : MAX { $$ = SCI->handle_word( MAX ); } ;
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Word : STAR_SLASH { $$ = SCI->handle_word( STAR_SLASH ); } ;
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Word : AND { $$ = SCI->handle_word( AND ); } ;
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Word : OR { $$ = SCI->handle_word( OR ); } ;
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Word : XOR { $$ = SCI->handle_word( XOR ); } ;
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Word : LSHIFT { $$ = SCI->handle_word( LSHIFT ); } ;
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Word : RSHIFT { $$ = SCI->handle_word( RSHIFT ); } ;
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Word : DROP { $$ = SCI->handle_word( DROP ); } ;
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Word : DROP2 { $$ = SCI->handle_word( DROP2 ); } ;
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Word : NIP { $$ = SCI->handle_word( NIP ); } ;
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Word : NIP2 { $$ = SCI->handle_word( NIP2 ); } ;
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Word : DUP { $$ = SCI->handle_word( DUP ); } ;
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Word : DUP2 { $$ = SCI->handle_word( DUP2 ); } ;
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Word : SWAP { $$ = SCI->handle_word( SWAP ); } ;
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Word : SWAP2 { $$ = SCI->handle_word( SWAP2 ); } ;
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Word : OVER { $$ = SCI->handle_word( OVER ); } ;
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Word : OVER2 { $$ = SCI->handle_word( OVER2 ); } ;
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Word : ROT { $$ = SCI->handle_word( ROT ); } ;
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Word : ROT2 { $$ = SCI->handle_word( ROT2 ); } ;
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Word : RROT { $$ = SCI->handle_word( RROT ); } ;
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Word : RROT2 { $$ = SCI->handle_word( RROT2 ); } ;
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Word : TUCK { $$ = SCI->handle_word( TUCK ); } ;
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Word : TUCK2 { $$ = SCI->handle_word( TUCK2 ); } ;
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Word : ROLL { $$ = SCI->handle_word( ROLL ); } ;
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Word : PICK { $$ = SCI->handle_word( PICK ); } ;
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Word : SELECT { $$ = SCI->handle_word( SELECT ); } ;
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Word : MALLOC { $$ = SCI->handle_word( MALLOC ); } ;
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Word : FREE { $$ = SCI->handle_word( FREE ); } ;
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Word : GET { $$ = SCI->handle_word( GET ); } ;
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Word : PUT { $$ = SCI->handle_word( PUT ); } ;
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Word : RECURSE { $$ = SCI->handle_word( RECURSE ); } ;
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Word : RETURN { $$ = SCI->handle_word( RETURN ); } ;
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Word : EXIT { $$ = SCI->handle_word( EXIT ); } ;
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Word : TAB { $$ = SCI->handle_word( TAB ); };
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Word : SPACE { $$ = SCI->handle_word( SPACE ); } ;
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Word : CR { $$ = SCI->handle_word( CR ); } ;
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Word : IN_STR { $$ = SCI->handle_word( IN_STR ); } ;
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Word : IN_NUM { $$ = SCI->handle_word( IN_NUM ); } ;
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Word : IN_CHAR { $$ = SCI->handle_word( IN_CHAR ); } ;
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Word : OUT_STR { $$ = SCI->handle_word( OUT_STR ); } ;
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Word : OUT_NUM { $$ = SCI->handle_word( OUT_NUM ); } ;
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Word : OUT_CHAR { $$ = SCI->handle_word( OUT_CHAR ); } ;
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Word : DUMP { $$ = SCI->handle_word( DUMP ); } ;
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%%
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/* Handle messages a little more nicely than the default yyerror */
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int yyerror(const char *ErrorMsg) {
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std::string where
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= std::string((SCI->filename() == "-") ? std::string("<stdin>") : SCI->filename())
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+ ":" + utostr((unsigned) Stackerlineno ) + ": ";
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std::string errMsg = std::string(ErrorMsg) + "\n" + where + " while reading ";
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if (yychar == YYEMPTY)
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errMsg += "end-of-file.";
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else
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errMsg += "token: '" + std::string(Stackertext, Stackerleng) + "'";
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StackerCompiler::ThrowException(errMsg);
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return 0;
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}
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