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glcpp: Set line locations in the lexer.

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This commit is contained in:
Kenneth Graunke
2010-06-16 17:41:12 -07:00
parent 465e03ee07
commit db938103c7
1 changed files with 21 additions and 4 deletions
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25
glcpp/glcpp-lex.l
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@@ -27,13 +27,22 @@
#include "glcpp.h" #include "glcpp.h"
#include "glcpp-parse.h" #include "glcpp-parse.h"
#define YY_USER_ACTION \
do { \
yylloc->source = 0; \
yylloc->first_column = yycolumn + 1; \
yylloc->first_line = yylineno + 1; \
yycolumn += yyleng; \
} while(0);
%} %}
%option bison-bridge bison-locations reentrant noyywrap %option bison-bridge bison-locations reentrant noyywrap
%option extra-type="glcpp_parser_t *" %option extra-type="glcpp_parser_t *"
%option prefix="glcpp_" %option prefix="glcpp_"
%option stack
%x DONE %x DONE COMMENT
SPACE [[:space:]] SPACE [[:space:]]
NONSPACE [^[:space:]] NONSPACE [^[:space:]]
@@ -48,17 +57,23 @@ DECIMAL_INTEGER [1-9][0-9]*[uU]?
OCTAL_INTEGER 0[0-7]*[uU]? OCTAL_INTEGER 0[0-7]*[uU]?
HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
NON_STARS_THEN_STARS [^*]*[*]+
%% %%
/* Single-line comments */ /* Single-line comments */
"//"[^\n]+\n { "//"[^\n]+\n {
yylineno++;
yycolumn = 0;
return NEWLINE; return NEWLINE;
} }
/* Multi-line comments */ /* Multi-line comments */
"/*"({NON_STARS_THEN_STARS}[^*/])*{NON_STARS_THEN_STARS}"/" { "/*" { yy_push_state(COMMENT, yyscanner); }
<COMMENT>[^*\n]*
<COMMENT>[^*\n]*\n { yylineno++; yycolumn = 0; }
<COMMENT>"*"+[^*/\n]*
<COMMENT>"*"+[^*/\n]*\n { yylineno++; yycolumn = 0; }
<COMMENT>"*"+"/" {
yy_pop_state(yyscanner);
if (yyextra->space_tokens) if (yyextra->space_tokens)
return SPACE; return SPACE;
} }
@@ -216,6 +231,8 @@ NON_STARS_THEN_STARS [^*]*[*]+
\n { \n {
yyextra->lexing_if = 0; yyextra->lexing_if = 0;
yylineno++;
yycolumn = 0;
return NEWLINE; return NEWLINE;
} }