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vkd3d-shader: Parse comments in the preprocessor.

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Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura
2020-12-07 12:56:31 -06:00
committed by Alexandre Julliard
parent f544cb38e5
commit 741c332658
1 changed files with 19 additions and 2 deletions
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21
libs/vkd3d-shader/preproc.l
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@ -36,16 +36,33 @@
%option never-interactive %option never-interactive
%option noinput %option noinput
%option nounput %option nounput
%option noyy_top_state
%option noyywrap %option noyywrap
%option prefix="preproc_yy" %option prefix="preproc_yy"
%option reentrant %option reentrant
%option stack
/* Because these can both be terminated by EOF, we need states for them. */
%s C_COMMENT
%s CXX_COMMENT
WS [ \t] WS [ \t]
%% %%
{WS}+ {} <INITIAL>"//" {yy_push_state(CXX_COMMENT, yyscanner);}
. {return T_TEXT;} <INITIAL>"/*" {yy_push_state(C_COMMENT, yyscanner);}
<CXX_COMMENT>\\\r?\n {}
<CXX_COMMENT>\n {
yy_pop_state(yyscanner);
return T_TEXT;
}
<C_COMMENT>"*/" {yy_pop_state(yyscanner);}
<C_COMMENT,CXX_COMMENT><<EOF>> {yy_pop_state(yyscanner);}
<C_COMMENT,CXX_COMMENT>. {}
<INITIAL>{WS}+ {}
<INITIAL>. {return T_TEXT;}
%% %%