diff options
Diffstat (limited to '')
| -rw-r--r-- | edify/lexer.l | 112 | ||||
| -rw-r--r-- | edify/lexer.ll | 110 |
2 files changed, 110 insertions, 112 deletions
diff --git a/edify/lexer.l b/edify/lexer.l deleted file mode 100644 index fb2933bee..000000000 --- a/edify/lexer.l +++ /dev/null @@ -1,112 +0,0 @@ -%{ -/* - * Copyright (C) 2009 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <string.h> - -#include "expr.h" -#include "yydefs.h" -#include "parser.h" - -int gLine = 1; -int gColumn = 1; -int gPos = 0; - -// TODO: enforce MAX_STRING_LEN during lexing -char string_buffer[MAX_STRING_LEN]; -char* string_pos; - -#define ADVANCE do {yylloc.start=gPos; yylloc.end=gPos+yyleng; \ - gColumn+=yyleng; gPos+=yyleng;} while(0) - -%} - -%x STR - -%option noyywrap - -%% - - -\" { - BEGIN(STR); - string_pos = string_buffer; - yylloc.start = gPos; - ++gColumn; - ++gPos; -} - -<STR>{ - \" { - ++gColumn; - ++gPos; - BEGIN(INITIAL); - *string_pos = '\0'; - yylval.str = strdup(string_buffer); - yylloc.end = gPos; - return STRING; - } - - \\n { gColumn += yyleng; gPos += yyleng; *string_pos++ = '\n'; } - \\t { gColumn += yyleng; gPos += yyleng; *string_pos++ = '\t'; } - \\\" { gColumn += yyleng; gPos += yyleng; *string_pos++ = '\"'; } - \\\\ { gColumn += yyleng; gPos += yyleng; *string_pos++ = '\\'; } - - \\x[0-9a-fA-F]{2} { - gColumn += yyleng; - gPos += yyleng; - int val; - sscanf(yytext+2, "%x", &val); - *string_pos++ = val; - } - - \n { - ++gLine; - ++gPos; - gColumn = 1; - *string_pos++ = yytext[0]; - } - - . { - ++gColumn; - ++gPos; - *string_pos++ = yytext[0]; - } -} - -if ADVANCE; return IF; -then ADVANCE; return THEN; -else ADVANCE; return ELSE; -endif ADVANCE; return ENDIF; - -[a-zA-Z0-9_:/.]+ { - ADVANCE; - yylval.str = strdup(yytext); - return STRING; -} - -\&\& ADVANCE; return AND; -\|\| ADVANCE; return OR; -== ADVANCE; return EQ; -!= ADVANCE; return NE; - -[+(),!;] ADVANCE; return yytext[0]; - -[ \t]+ ADVANCE; - -(#.*)?\n gPos += yyleng; ++gLine; gColumn = 1; - -. return BAD; diff --git a/edify/lexer.ll b/edify/lexer.ll new file mode 100644 index 000000000..b764d1699 --- /dev/null +++ b/edify/lexer.ll @@ -0,0 +1,110 @@ +%{ +/* + * Copyright (C) 2009 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <string.h> +#include <string> + +#include "expr.h" +#include "yydefs.h" +#include "parser.h" + +int gLine = 1; +int gColumn = 1; +int gPos = 0; + +std::string string_buffer; + +#define ADVANCE do {yylloc.start=gPos; yylloc.end=gPos+yyleng; \ + gColumn+=yyleng; gPos+=yyleng;} while(0) + +%} + +%x STR + +%option noyywrap + +%% + + +\" { + BEGIN(STR); + string_buffer.clear(); + yylloc.start = gPos; + ++gColumn; + ++gPos; +} + +<STR>{ + \" { + ++gColumn; + ++gPos; + BEGIN(INITIAL); + yylval.str = strdup(string_buffer.c_str()); + yylloc.end = gPos; + return STRING; + } + + \\n { gColumn += yyleng; gPos += yyleng; string_buffer.push_back('\n'); } + \\t { gColumn += yyleng; gPos += yyleng; string_buffer.push_back('\t'); } + \\\" { gColumn += yyleng; gPos += yyleng; string_buffer.push_back('\"'); } + \\\\ { gColumn += yyleng; gPos += yyleng; string_buffer.push_back('\\'); } + + \\x[0-9a-fA-F]{2} { + gColumn += yyleng; + gPos += yyleng; + int val; + sscanf(yytext+2, "%x", &val); + string_buffer.push_back(static_cast<char>(val)); + } + + \n { + ++gLine; + ++gPos; + gColumn = 1; + string_buffer.push_back(yytext[0]); + } + + . { + ++gColumn; + ++gPos; + string_buffer.push_back(yytext[0]); + } +} + +if ADVANCE; return IF; +then ADVANCE; return THEN; +else ADVANCE; return ELSE; +endif ADVANCE; return ENDIF; + +[a-zA-Z0-9_:/.]+ { + ADVANCE; + yylval.str = strdup(yytext); + return STRING; +} + +\&\& ADVANCE; return AND; +\|\| ADVANCE; return OR; +== ADVANCE; return EQ; +!= ADVANCE; return NE; + +[+(),!;] ADVANCE; return yytext[0]; + +[ \t]+ ADVANCE; + +(#.*)?\n gPos += yyleng; ++gLine; gColumn = 1; + +. return BAD; |