зеркало из https://github.com/mozilla/gecko-dev.git
129 строки
4.0 KiB
Plaintext
129 строки
4.0 KiB
Plaintext
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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%option yylineno
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%{
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/*
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* includes and local declaration.
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*/
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#include "Fundamentals.h"
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#include "Primitives.h"
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#include "Value.h"
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#include "GraphBuilder.h"
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#include "cstubs.h"
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#include "Parser.h"
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#define yywrap() 1
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#define YY_DECL int yylex(void *yylval)
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#define YYLVAL ((YYSTYPE *) yylval)
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#define returnPrimitive(op) YYLVAL->yyPrimitiveOperation = (op); return PRIMITIVE;
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#define returnKind(kind) YYLVAL->yyValueKind = (kind); return KIND;
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static char *extractLabelName(char *label);
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%}
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label [[:alnum:]]+":"
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space [ \r\t]+
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number [0-9]+
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string [[:alnum:]]+
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right_assignment "->"
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left_assignment ":="
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comma ","
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parenthesis "("|")"
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at "@"
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%x comment ccomment nil
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%%
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{right_assignment} {return RIGHT_ASSIGNMENT;}
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{left_assignment} {return LEFT_ASSIGNMENT;}
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{comma} {return yytext[0];}
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{parenthesis} {return yytext[0];}
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{at} {return yytext[0];}
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"_I" {returnKind(vkInt);}
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"Arg" {returnPrimitive(poArg_I)}
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"Result" {returnPrimitive(poResult_I)}
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"Const" {returnPrimitive(poConst_I)}
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"Mul" {returnPrimitive(poMul_I)}
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"Add" {returnPrimitive(poAdd_I)}
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"Sub" {returnPrimitive(poSub_I)}
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"And" {returnPrimitive(poAnd_I)}
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"Or" {returnPrimitive(poOr_I)}
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"Xor" {returnPrimitive(poXor_I)}
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"Cmp" {returnPrimitive(poCmp_I)}
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"IfLt" {returnPrimitive(poIfLt)}
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"IfEq" {returnPrimitive(poIfEq)}
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"IfLe" {returnPrimitive(poIfLe)}
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"IfGt" {returnPrimitive(poIfGt)}
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"IfNe" {returnPrimitive(poIfNe)}
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"IfGe" {returnPrimitive(poIfGe)}
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"St" {returnPrimitive(poSt_I)}
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"Branch" {returnPrimitive((PrimitiveOperation)nPrimitiveOperations)}
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"Phi" {return PHI;}
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{string}: {YYLVAL->yyString = extractLabelName(yytext); return LABEL;}
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{number} {sscanf(yytext, "%d", &YYLVAL->yyValue.i); return NUMBER;}
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#{number} {sscanf(yytext + 1, "%d", &YYLVAL->yyValue.i); return NUMBER;}
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{string} {YYLVAL->yyString = strdup(yytext); return STRING;}
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{space}+
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"/*" BEGIN(comment);
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"//" BEGIN(ccomment);
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\n return '\n';
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.
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<comment>[^*]*
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<comment>"*"+[^*/]*
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<comment>"*"+"/" BEGIN(INITIAL);
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<ccomment>.
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<ccomment>\n {
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BEGIN(INITIAL); return '\n';
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}
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<nil>. { /* to quiet the compiler. */
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return yytext[0];
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yyunput(0, NULL);
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yy_flex_realloc(0, 0);
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REJECT;
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}
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%%
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static char *
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extractLabelName(char *label)
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{
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uint32 size = strlen(label);
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char *ret = (char *) malloc(size);
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strncpy(ret, label, size - 1);
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ret[size - 1] = '\0';
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return ret;
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}
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