#include "glcpp.h"
#include "main/core.h" /* for struct gl_extensions */
+#include "main/mtypes.h" /* for gl_api enum */
static void
yyerror (YYLTYPE *locp, glcpp_parser_t *parser, const char *error);
%expect 0
%token COMMA_FINAL DEFINED ELIF_EXPANDED HASH HASH_DEFINE FUNC_IDENTIFIER OBJ_IDENTIFIER HASH_ELIF HASH_ELSE HASH_ENDIF HASH_IF HASH_IFDEF HASH_IFNDEF HASH_LINE HASH_UNDEF HASH_VERSION IDENTIFIER IF_EXPANDED INTEGER INTEGER_STRING LINE_EXPANDED NEWLINE OTHER PLACEHOLDER SPACE
%token PASTE
-%type <ival> expression INTEGER operator SPACE integer_constant
+%type <ival> INTEGER operator SPACE integer_constant
+%type <expression_value> expression
%type <str> IDENTIFIER FUNC_IDENTIFIER OBJ_IDENTIFIER INTEGER_STRING OTHER
%type <string_list> identifier_list
%type <token> preprocessing_token conditional_token
ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length, "\n");
}
| HASH_LINE {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} pp_tokens NEWLINE {
if (parser->skip_stack == NULL ||
expanded_line:
IF_EXPANDED expression NEWLINE {
- _glcpp_parser_skip_stack_push_if (parser, & @1, $2);
+ if (parser->is_gles && $2.undefined_macro)
+ glcpp_error(& @1, parser, "undefined macro %s in expression (illegal in GLES)", $2.undefined_macro);
+ _glcpp_parser_skip_stack_push_if (parser, & @1, $2.value);
}
| ELIF_EXPANDED expression NEWLINE {
- _glcpp_parser_skip_stack_change_if (parser, & @1, "elif", $2);
+ if (parser->is_gles && $2.undefined_macro)
+ glcpp_error(& @1, parser, "undefined macro %s in expression (illegal in GLES)", $2.undefined_macro);
+ _glcpp_parser_skip_stack_change_if (parser, & @1, "elif", $2.value);
}
| LINE_EXPANDED integer_constant NEWLINE {
parser->has_new_line_number = 1;
control_line:
HASH_DEFINE {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} define
| HASH_UNDEF {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} IDENTIFIER NEWLINE {
- macro_t *macro = hash_table_find (parser->defines, $3);
+ macro_t *macro;
+ if (strcmp("__LINE__", $3) == 0
+ || strcmp("__FILE__", $3) == 0
+ || strcmp("__VERSION__", $3) == 0)
+ glcpp_error(& @1, parser, "Built-in (pre-defined)"
+ " macro names can not be undefined.");
+
+ macro = hash_table_find (parser->defines, $3);
if (macro) {
hash_table_remove (parser->defines, $3);
ralloc_free (macro);
ralloc_free ($3);
}
| HASH_IF {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} conditional_tokens NEWLINE {
/* Be careful to only evaluate the 'if' expression if
* we are not skipping. When we are skipping, we
_glcpp_parser_skip_stack_push_if (parser, & @1, 0);
}
| HASH_IFDEF {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} IDENTIFIER junk NEWLINE {
macro_t *macro = hash_table_find (parser->defines, $3);
ralloc_free ($3);
_glcpp_parser_skip_stack_push_if (parser, & @1, macro != NULL);
}
| HASH_IFNDEF {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
} IDENTIFIER junk NEWLINE {
macro_t *macro = hash_table_find (parser->defines, $3);
ralloc_free ($3);
glcpp_warning(& @1, parser, "ignoring illegal #elif without expression");
}
}
-| HASH_ELSE {
+| HASH_ELSE { parser->lexing_directive = 1; } NEWLINE {
if (parser->skip_stack &&
parser->skip_stack->has_else)
{
if (parser->skip_stack)
parser->skip_stack->has_else = true;
}
- } NEWLINE
+ }
| HASH_ENDIF {
_glcpp_parser_skip_stack_pop (parser, & @1);
} NEWLINE
| HASH_VERSION integer_constant NEWLINE {
+ if (parser->version_resolved) {
+ glcpp_error(& @1, parser, "#version must appear on the first line");
+ }
_glcpp_parser_handle_version_declaration(parser, $2, NULL, true);
}
| HASH_VERSION integer_constant IDENTIFIER NEWLINE {
+ if (parser->version_resolved) {
+ glcpp_error(& @1, parser, "#version must appear on the first line");
+ }
_glcpp_parser_handle_version_declaration(parser, $2, $3, true);
}
| HASH NEWLINE {
- glcpp_parser_resolve_version(parser);
+ glcpp_parser_resolve_implicit_version(parser);
}
;
}
expression:
- integer_constant
+ integer_constant {
+ $$.value = $1;
+ $$.undefined_macro = NULL;
+ }
| IDENTIFIER {
+ $$.value = 0;
if (parser->is_gles)
- glcpp_error(& @1, parser, "undefined macro %s in expression (illegal in GLES)", $1);
- $$ = 0;
+ $$.undefined_macro = ralloc_strdup (parser, $1);
+ else
+ $$.undefined_macro = NULL;
}
| expression OR expression {
- $$ = $1 || $3;
+ $$.value = $1.value || $3.value;
+
+ /* Short-circuit: Only flag undefined from right side
+ * if left side evaluates to false.
+ */
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else if (! $1.value)
+ $$.undefined_macro = $3.undefined_macro;
}
| expression AND expression {
- $$ = $1 && $3;
+ $$.value = $1.value && $3.value;
+
+ /* Short-circuit: Only flag undefined from right-side
+ * if left side evaluates to true.
+ */
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else if ($1.value)
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '|' expression {
- $$ = $1 | $3;
+ $$.value = $1.value | $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '^' expression {
- $$ = $1 ^ $3;
+ $$.value = $1.value ^ $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '&' expression {
- $$ = $1 & $3;
+ $$.value = $1.value & $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression NOT_EQUAL expression {
- $$ = $1 != $3;
+ $$.value = $1.value != $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression EQUAL expression {
- $$ = $1 == $3;
+ $$.value = $1.value == $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression GREATER_OR_EQUAL expression {
- $$ = $1 >= $3;
+ $$.value = $1.value >= $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression LESS_OR_EQUAL expression {
- $$ = $1 <= $3;
+ $$.value = $1.value <= $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '>' expression {
- $$ = $1 > $3;
+ $$.value = $1.value > $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '<' expression {
- $$ = $1 < $3;
+ $$.value = $1.value < $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression RIGHT_SHIFT expression {
- $$ = $1 >> $3;
+ $$.value = $1.value >> $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression LEFT_SHIFT expression {
- $$ = $1 << $3;
+ $$.value = $1.value << $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '-' expression {
- $$ = $1 - $3;
+ $$.value = $1.value - $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '+' expression {
- $$ = $1 + $3;
+ $$.value = $1.value + $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '%' expression {
- if ($3 == 0) {
+ if ($3.value == 0) {
yyerror (& @1, parser,
"zero modulus in preprocessor directive");
} else {
- $$ = $1 % $3;
+ $$.value = $1.value % $3.value;
}
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '/' expression {
- if ($3 == 0) {
+ if ($3.value == 0) {
yyerror (& @1, parser,
"division by 0 in preprocessor directive");
} else {
- $$ = $1 / $3;
+ $$.value = $1.value / $3.value;
}
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| expression '*' expression {
- $$ = $1 * $3;
+ $$.value = $1.value * $3.value;
+ if ($1.undefined_macro)
+ $$.undefined_macro = $1.undefined_macro;
+ else
+ $$.undefined_macro = $3.undefined_macro;
}
| '!' expression %prec UNARY {
- $$ = ! $2;
+ $$.value = ! $2.value;
+ $$.undefined_macro = $2.undefined_macro;
}
| '~' expression %prec UNARY {
- $$ = ~ $2;
+ $$.value = ~ $2.value;
+ $$.undefined_macro = $2.undefined_macro;
}
| '-' expression %prec UNARY {
- $$ = - $2;
+ $$.value = - $2.value;
+ $$.undefined_macro = $2.undefined_macro;
}
| '+' expression %prec UNARY {
- $$ = + $2;
+ $$.value = + $2.value;
+ $$.undefined_macro = $2.undefined_macro;
}
| '(' expression ')' {
$$ = $2;
junk:
/* empty */
| pp_tokens {
- glcpp_warning(&@1, parser, "extra tokens at end of directive");
+ glcpp_error(&@1, parser, "extra tokens at end of directive");
}
;
if (node_a == NULL || node_b == NULL)
return 0;
-
- if (node_a->token->type == SPACE) {
- node_a = node_a->next;
- continue;
- }
-
- if (node_b->token->type == SPACE) {
- node_b = node_b->next;
+ /* Make sure whitespace appears in the same places in both.
+ * It need not be exactly the same amount of whitespace,
+ * though.
+ */
+ if (node_a->token->type == SPACE
+ && node_b->token->type == SPACE) {
+ while (node_a->token->type == SPACE)
+ node_a = node_a->next;
+ while (node_b->token->type == SPACE)
+ node_b = node_b->next;
continue;
}
}
glcpp_parser_t *
-glcpp_parser_create (const struct gl_extensions *extensions)
+glcpp_parser_create (const struct gl_extensions *extensions, gl_api api)
{
glcpp_parser_t *parser;
parser->defines = hash_table_ctor (32, hash_table_string_hash,
hash_table_string_compare);
parser->active = NULL;
- parser->lexing_if = 0;
+ parser->lexing_directive = 0;
parser->space_tokens = 1;
+ parser->last_token_was_newline = 0;
parser->newline_as_space = 0;
parser->in_control_line = 0;
parser->paren_count = 0;
parser->error = 0;
parser->extensions = extensions;
+ parser->api = api;
parser->version_resolved = false;
parser->has_new_line_number = 0;
_check_for_reserved_macro_name (glcpp_parser_t *parser, YYLTYPE *loc,
const char *identifier)
{
- /* According to the GLSL specification, macro names starting with "__"
- * or "GL_" are reserved for future use. So, don't allow them.
+ /* Section 3.3 (Preprocessor) of the GLSL 1.30 spec (and later) and
+ * the GLSL ES spec (all versions) say:
+ *
+ * "All macro names containing two consecutive underscores ( __ )
+ * are reserved for future use as predefined macro names. All
+ * macro names prefixed with "GL_" ("GL" followed by a single
+ * underscore) are also reserved."
+ *
+ * The intention is that names containing __ are reserved for internal
+ * use by the implementation, and names prefixed with GL_ are reserved
+ * for use by Khronos. Since every extension adds a name prefixed
+ * with GL_ (i.e., the name of the extension), that should be an
+ * error. Names simply containing __ are dangerous to use, but should
+ * be allowed.
+ *
+ * A future version of the GLSL specification will clarify this.
*/
if (strstr(identifier, "__")) {
- glcpp_error (loc, parser, "Macro names containing \"__\" are reserved.\n");
+ glcpp_warning(loc, parser,
+ "Macro names containing \"__\" are reserved "
+ "for use by the implementation.\n");
}
if (strncmp(identifier, "GL_", 3) == 0) {
glcpp_error (loc, parser, "Macro names starting with \"GL_\" are reserved.\n");
{
const struct gl_extensions *extensions = parser->extensions;
+ if (parser->version_resolved)
+ return;
+
parser->version_resolved = true;
add_builtin_define (parser, "__VERSION__", version);
/* Add pre-defined macros. */
if (parser->is_gles) {
add_builtin_define(parser, "GL_ES", 1);
+ add_builtin_define(parser, "GL_EXT_separate_shader_objects", 1);
if (extensions != NULL) {
if (extensions->OES_EGL_image_external)
}
} else {
add_builtin_define(parser, "GL_ARB_draw_buffers", 1);
+ add_builtin_define(parser, "GL_ARB_separate_shader_objects", 1);
add_builtin_define(parser, "GL_ARB_texture_rectangle", 1);
add_builtin_define(parser, "GL_AMD_shader_trinary_minmax", 1);
add_builtin_define(parser, "GL_ARB_fragment_coord_conventions",
1);
+ if (extensions->ARB_fragment_layer_viewport)
+ add_builtin_define(parser, "GL_ARB_fragment_layer_viewport", 1);
+
if (extensions->ARB_explicit_attrib_location)
add_builtin_define(parser, "GL_ARB_explicit_attrib_location", 1);
+ if (extensions->ARB_explicit_uniform_location)
+ add_builtin_define(parser, "GL_ARB_explicit_uniform_location", 1);
+
if (extensions->ARB_shader_texture_lod)
add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);
if (extensions->AMD_vertex_shader_layer)
add_builtin_define(parser, "GL_AMD_vertex_shader_layer", 1);
+ if (extensions->AMD_vertex_shader_viewport_index)
+ add_builtin_define(parser, "GL_AMD_vertex_shader_viewport_index", 1);
+
if (extensions->ARB_shading_language_420pack)
add_builtin_define(parser, "GL_ARB_shading_language_420pack", 1);
if (extensions->ARB_viewport_array)
add_builtin_define(parser, "GL_ARB_viewport_array", 1);
+
+ if (extensions->ARB_compute_shader)
+ add_builtin_define(parser, "GL_ARB_compute_shader", 1);
+
+ if (extensions->ARB_shader_image_load_store)
+ add_builtin_define(parser, "GL_ARB_shader_image_load_store", 1);
}
}
}
}
-/* GLSL version is no version is explicitly specified. */
+/* GLSL version if no version is explicitly specified. */
#define IMPLICIT_GLSL_VERSION 110
+/* GLSL ES version if no version is explicitly specified. */
+#define IMPLICIT_GLSL_ES_VERSION 100
+
void
-glcpp_parser_resolve_version(glcpp_parser_t *parser)
+glcpp_parser_resolve_implicit_version(glcpp_parser_t *parser)
{
- if (parser->version_resolved)
- return;
+ int language_version = parser->api == API_OPENGLES2 ?
+ IMPLICIT_GLSL_ES_VERSION :
+ IMPLICIT_GLSL_VERSION;
- _glcpp_parser_handle_version_declaration(parser, IMPLICIT_GLSL_VERSION,
+ _glcpp_parser_handle_version_declaration(parser, language_version,
NULL, false);
}
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