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vkd3d-shader: Implement the "defined" keyword.

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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
2021-01-14 14:47:51 -06:00
committed by Alexandre Julliard
parent 1a326d16c6
commit d31f288111
3 changed files with 32 additions and 0 deletions
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16
libs/vkd3d-shader/preproc.l
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@@ -73,6 +73,8 @@ IDENTIFIER [A-Za-z_][A-Za-z0-9_]*
<ERROR>(\\{NEWLINE}|[^\n])* {return T_STRING;}
<INITIAL>defined/\( {return T_DEFINED;}
<INITIAL>defined {return T_DEFINED;}
<INITIAL>{IDENTIFIER}/\( {return T_IDENTIFIER_PAREN;}
<INITIAL>{IDENTIFIER} {return T_IDENTIFIER;}
@@ -377,6 +379,9 @@ int yylex(YYSTYPE *lval, YYLTYPE *lloc, yyscan_t scanner)
ctx->last_was_newline = (token == T_NEWLINE);
}
if (ctx->current_directive && token == T_DEFINED)
ctx->last_was_defined = true;
func_state = ctx->current_directive ? &ctx->directive_func : &ctx->text_func;
TRACE("Parsing token %d%s, line %d, in directive %d, state %#x, string %s.\n",
@@ -471,6 +476,17 @@ int yylex(YYSTYPE *lval, YYLTYPE *lloc, yyscan_t scanner)
case T_UNDEF:
/* Return identifiers verbatim. */
return return_token(token, lval, text);
case T_IF:
case T_ELIF:
/* Return identifiers verbatim only if they're the
* argument to "defined". */
if (ctx->last_was_defined)
{
ctx->last_was_defined = false;
return return_token(token, lval, text);
}
break;
}
/* Otherwise, expand a macro if there is one. */