[PATCH vkd3d v2 4/5] vkd3d-shader: Implement addition and subtraction in #if directives.
Zebediah Figura
zfigura at codeweavers.com
Tue Jan 19 11:18:20 CST 2021
Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
---
libs/vkd3d-shader/preproc.y | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/libs/vkd3d-shader/preproc.y b/libs/vkd3d-shader/preproc.y
index eb2036cd..61b6baf5 100644
--- a/libs/vkd3d-shader/preproc.y
+++ b/libs/vkd3d-shader/preproc.y
@@ -336,6 +336,7 @@ static void free_parse_arg_names(struct parse_arg_names *args)
%type <integer> primary_expr
%type <integer> unary_expr
%type <integer> mul_expr
+%type <integer> add_expr
%type <string> body_token
%type <const_string> body_token_const
%type <string_buffer> body_text
@@ -489,7 +490,7 @@ directive
}
vkd3d_free($2);
}
- | T_IF mul_expr T_NEWLINE
+ | T_IF add_expr T_NEWLINE
{
if (!preproc_push_if(ctx, !!$2))
YYABORT;
@@ -504,7 +505,7 @@ directive
preproc_push_if(ctx, !preproc_find_macro(ctx, $2));
vkd3d_free($2);
}
- | T_ELIF mul_expr T_NEWLINE
+ | T_ELIF add_expr T_NEWLINE
{
const struct preproc_file *file = preproc_get_top_file(ctx);
@@ -656,3 +657,14 @@ mul_expr
}
$$ = $1 / $3;
}
+
+add_expr
+ : mul_expr
+ | add_expr '+' mul_expr
+ {
+ $$ = $1 + $3;
+ }
+ | add_expr '-' mul_expr
+ {
+ $$ = $1 - $3;
+ }
--
2.30.0
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