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vkd3d-shader: Implement concatenation.

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Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura
2021-01-12 16:14:20 -06:00
committed by Alexandre Julliard
parent e1a956f8f2
commit 33df515f10
3 changed files with 30 additions and 5 deletions
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22
libs/vkd3d-shader/preproc.l
View File

@@ -83,6 +83,8 @@ IDENTIFIER [A-Za-z_][A-Za-z0-9_]*
<INITIAL>0[0-7]*[ul]{0,2} {return T_INTEGER;}
<INITIAL>[1-9][0-9]*[ul]{0,2} {return T_INTEGER;}
<INITIAL>## {return T_CONCAT;}
<INITIAL>"&&" {return T_TEXT;}
<INITIAL>"||" {return T_TEXT;}
<INITIAL>"++" {return T_TEXT;}
@@ -189,6 +191,18 @@ static struct preproc_macro *preproc_get_top_macro(struct preproc_ctx *ctx)
return ctx->expansion_stack[ctx->expansion_count - 1].macro;
}
/* Concatenation is not done for object-like macros, but is done for both
* function-like macro bodies and their arguments. */
static bool should_concat(struct preproc_ctx *ctx)
{
struct preproc_macro *macro;
if (!ctx->expansion_count)
return false;
macro = ctx->expansion_stack[ctx->expansion_count - 1].macro;
return !macro || macro->arg_count;
}
static void preproc_pop_buffer(struct preproc_ctx *ctx)
{
if (ctx->expansion_count)
@@ -375,6 +389,14 @@ int yylex(YYSTYPE *lval, YYLTYPE *lloc, yyscan_t scanner)
switch (func_state->state)
{
case STATE_NONE:
if (token == T_CONCAT && should_concat(ctx))
{
while (ctx->buffer.content_size
&& strchr(" \t\r\n", ctx->buffer.buffer[ctx->buffer.content_size - 1]))
--ctx->buffer.content_size;
break;
}
if (token == T_IDENTIFIER || token == T_IDENTIFIER_PAREN)
{
const struct preproc_text *expansion;

6
libs/vkd3d-shader/preproc.y
View File

@@ -327,6 +327,8 @@ static void free_parse_arg_names(struct parse_arg_names *args)
%token T_INCLUDE "#include"
%token T_UNDEF "#undef"
%token T_CONCAT "##"
%type <integer> expr
%type <string> body_token
%type <const_string> body_token_const
@@ -419,6 +421,10 @@ body_token_const
{
$$ = ",";
}
| T_CONCAT
{
$$ = "##";
}
directive
: T_DEFINE T_IDENTIFIER body_text T_NEWLINE