[PATCH vkd3d 3/5] vkd3d-shader: Implement multiplication and division.
Zebediah Figura
zfigura at codeweavers.com
Mon Jan 18 15:16:42 CST 2021
Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
---
libs/vkd3d-shader/preproc.l | 2 +-
libs/vkd3d-shader/preproc.y | 24 ++++++++++++++++++++++--
2 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/libs/vkd3d-shader/preproc.l b/libs/vkd3d-shader/preproc.l
index 011f8dbb..a522b7c8 100644
--- a/libs/vkd3d-shader/preproc.l
+++ b/libs/vkd3d-shader/preproc.l
@@ -157,7 +157,7 @@ IDENTIFIER [A-Za-z_][A-Za-z0-9_]*
}
<INITIAL>{WS}+ {}
-<INITIAL>[-()\[\]{},+!] {return yytext[0];}
+<INITIAL>[-()\[\]{},+!*/] {return yytext[0];}
<INITIAL>. {return T_TEXT;}
%%
diff --git a/libs/vkd3d-shader/preproc.y b/libs/vkd3d-shader/preproc.y
index 51df5d40..1060e9d7 100644
--- a/libs/vkd3d-shader/preproc.y
+++ b/libs/vkd3d-shader/preproc.y
@@ -335,6 +335,7 @@ static void free_parse_arg_names(struct parse_arg_names *args)
%type <integer> primary_expr
%type <integer> unary_expr
+%type <integer> mul_expr
%type <string> body_token
%type <const_string> body_token_const
%type <string_buffer> body_text
@@ -439,6 +440,14 @@ body_token_const
{
$$ = "!";
}
+ | '*'
+ {
+ $$ = "*";
+ }
+ | '/'
+ {
+ $$ = "/";
+ }
| T_CONCAT
{
$$ = "##";
@@ -480,7 +489,7 @@ directive
}
vkd3d_free($2);
}
- | T_IF unary_expr T_NEWLINE
+ | T_IF mul_expr T_NEWLINE
{
if (!preproc_push_if(ctx, !!$2))
YYABORT;
@@ -495,7 +504,7 @@ directive
preproc_push_if(ctx, !preproc_find_macro(ctx, $2));
vkd3d_free($2);
}
- | T_ELIF unary_expr T_NEWLINE
+ | T_ELIF mul_expr T_NEWLINE
{
const struct preproc_file *file = preproc_get_top_file(ctx);
@@ -631,3 +640,14 @@ unary_expr
{
$$ = !$2;
}
+
+mul_expr
+ : unary_expr
+ | mul_expr '*' unary_expr
+ {
+ $$ = $1 * $3;
+ }
+ | mul_expr '/' unary_expr
+ {
+ $$ = $1 / $3;
+ }
--
2.30.0
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