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assembler: Add location support

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Let's generate location information about the tokens we are parsing.
This can be used to give accurate location when reporting errors and
warnings.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau 2013-01-26 19:51:28 +00:00
parent 574a249142
commit d94e8a6cf0
2 changed files with 19 additions and 6 deletions
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1
assembler/gram.y
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@ -276,6 +276,7 @@ static void resolve_subnr(struct brw_reg *reg)
%} %}
%locations
%start ROOT %start ROOT

24
assembler/lex.l
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@ -9,6 +9,15 @@
int saved_state = 0; int saved_state = 0;
extern char *input_filename; extern char *input_filename;
/* Locations */
int yycolumn = 1;
#define YY_USER_ACTION \
yylloc.first_line = yylloc.last_line = yylineno; \
yylloc.first_column = yycolumn; \
yylloc.last_column = yycolumn+yyleng-1; \
yycolumn += yyleng;
%} %}
%x BLOCK_COMMENT %x BLOCK_COMMENT
%x CHANNEL %x CHANNEL
@ -16,11 +25,11 @@ extern char *input_filename;
%x FILENAME %x FILENAME
%% %%
\/\/.*[\r\n] { } /* eat up single-line comments */ \/\/.*[\r\n] { yycolumn = 1; } /* eat up single-line comments */
"\.kernel".*[\r\n] { } "\.kernel".*[\r\n] { yycolumn = 1; }
"\.end_kernel".*[\r\n] { } "\.end_kernel".*[\r\n] { yycolumn = 1; }
"\.code".*[\r\n] { } "\.code".*[\r\n] { yycolumn = 1; }
"\.end_code".*[\r\n] { } "\.end_code".*[\r\n] { yycolumn = 1; }
/* eat up multi-line comments, non-nesting. */ /* eat up multi-line comments, non-nesting. */
\/\* { \/\* {
@ -33,6 +42,7 @@ extern char *input_filename;
<BLOCK_COMMENT>. { } <BLOCK_COMMENT>. { }
<BLOCK_COMMENT>[\r\n] { } <BLOCK_COMMENT>[\r\n] { }
"#line"" "* { "#line"" "* {
yycolumn = 1;
saved_state = YYSTATE; saved_state = YYSTATE;
BEGIN(LINENUMBER); BEGIN(LINENUMBER);
} }
@ -407,7 +417,9 @@ yylval.integer = BRW_CHANNEL_W;
return NUMBER; return NUMBER;
} }
[ \t\n]+ { } /* eat up whitespace */ [ \t]+ { } /* eat up whitespace */
\n { yycolumn = 1; }
. { . {
fprintf(stderr, "%s: %d: %s at \"%s\"\n", fprintf(stderr, "%s: %d: %s at \"%s\"\n",