98 lines
2.2 KiB
Plaintext
98 lines
2.2 KiB
Plaintext
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%{
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/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "expr.h"
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#include "parser.h"
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int gLine = 1;
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int gColumn = 1;
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// TODO: enforce MAX_STRING_LEN during lexing
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char string_buffer[MAX_STRING_LEN];
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char* string_pos;
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%}
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%x STR
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%option noyywrap
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%%
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\" {
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++gColumn;
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BEGIN(STR);
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string_pos = string_buffer;
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}
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<STR>{
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\" {
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++gColumn;
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BEGIN(INITIAL);
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*string_pos = '\0';
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yylval.str = strdup(string_buffer);
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return STRING;
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}
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\\n { gColumn += yyleng; *string_pos++ = '\n'; }
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\\t { gColumn += yyleng; *string_pos++ = '\t'; }
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\\\" { gColumn += yyleng; *string_pos++ = '\"'; }
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\\\\ { gColumn += yyleng; *string_pos++ = '\\'; }
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\\x[0-9a-fA-F]{2} {
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gColumn += yyleng;
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int val;
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sscanf(yytext+2, "%x", &val);
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*string_pos++ = val;
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}
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\n {
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++gLine;
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gColumn = 1;
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*string_pos++ = yytext[0];
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}
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. {
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++gColumn;
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*string_pos++ = yytext[0];
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}
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}
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if { gColumn += yyleng; return IF; }
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then { gColumn += yyleng; return THEN; }
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else { gColumn += yyleng; return ELSE; }
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endif { gColumn += yyleng; return ENDIF; }
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[a-zA-Z0-9_:/]+ {
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gColumn += yyleng;
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yylval.str = strdup(yytext);
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return STRING;
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}
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\&\& { gColumn += yyleng; return AND; }
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\|\| { gColumn += yyleng; return OR; }
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== { gColumn += yyleng; return EQ; }
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!= { gColumn += yyleng; return NE; }
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[+(),!;] { gColumn += yyleng; return yytext[0]; }
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[ \t]+ gColumn += yyleng;
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(#.*)?\n { ++gLine; gColumn = 1; }
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. return BAD;
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