static void
_glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t version,
- const char *ident);
+ const char *ident, bool explicitly_set);
static int
glcpp_parser_lex (YYSTYPE *yylval, YYLTYPE *yylloc, glcpp_parser_t *parser);
control_line {
ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length, "\n");
}
-| HASH_LINE pp_tokens NEWLINE {
+| HASH_LINE {
+ glcpp_parser_resolve_implicit_version(parser);
+ } pp_tokens NEWLINE {
+
if (parser->skip_stack == NULL ||
parser->skip_stack->type == SKIP_NO_SKIP)
{
_glcpp_parser_expand_and_lex_from (parser,
- LINE_EXPANDED, $2);
+ LINE_EXPANDED, $3);
}
}
| text_line {
}
;
-control_line:
- HASH_DEFINE OBJ_IDENTIFIER replacement_list NEWLINE {
- _define_object_macro (parser, & @2, $2, $3);
+define:
+ OBJ_IDENTIFIER replacement_list NEWLINE {
+ _define_object_macro (parser, & @1, $1, $2);
}
-| HASH_DEFINE FUNC_IDENTIFIER '(' ')' replacement_list NEWLINE {
- _define_function_macro (parser, & @2, $2, NULL, $5);
+| FUNC_IDENTIFIER '(' ')' replacement_list NEWLINE {
+ _define_function_macro (parser, & @1, $1, NULL, $4);
}
-| HASH_DEFINE FUNC_IDENTIFIER '(' identifier_list ')' replacement_list NEWLINE {
- _define_function_macro (parser, & @2, $2, $4, $6);
+| FUNC_IDENTIFIER '(' identifier_list ')' replacement_list NEWLINE {
+ _define_function_macro (parser, & @1, $1, $3, $5);
}
-| HASH_UNDEF IDENTIFIER NEWLINE {
- macro_t *macro = hash_table_find (parser->defines, $2);
+;
+
+control_line:
+ HASH_DEFINE {
+ glcpp_parser_resolve_implicit_version(parser);
+ } define
+| HASH_UNDEF {
+ glcpp_parser_resolve_implicit_version(parser);
+ } IDENTIFIER NEWLINE {
+ 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_t *macro = hash_table_find (parser->defines, $3);
if (macro) {
- hash_table_remove (parser->defines, $2);
+ hash_table_remove (parser->defines, $3);
ralloc_free (macro);
}
- ralloc_free ($2);
+ ralloc_free ($3);
}
-| HASH_IF conditional_tokens NEWLINE {
+| HASH_IF {
+ 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
* simply push a new 0-valued 'if' onto the skip
parser->skip_stack->type == SKIP_NO_SKIP)
{
_glcpp_parser_expand_and_lex_from (parser,
- IF_EXPANDED, $2);
+ IF_EXPANDED, $3);
}
else
{
}
_glcpp_parser_skip_stack_push_if (parser, & @1, 0);
}
-| HASH_IFDEF IDENTIFIER junk NEWLINE {
- macro_t *macro = hash_table_find (parser->defines, $2);
- ralloc_free ($2);
+| HASH_IFDEF {
+ 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 IDENTIFIER junk NEWLINE {
- macro_t *macro = hash_table_find (parser->defines, $2);
- ralloc_free ($2);
- _glcpp_parser_skip_stack_push_if (parser, & @1, macro == NULL);
+| HASH_IFNDEF {
+ 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, & @2, macro == NULL);
}
| HASH_ELIF conditional_tokens NEWLINE {
/* Be careful to only evaluate the 'elif' expression
_glcpp_parser_expand_and_lex_from (parser,
ELIF_EXPANDED, $2);
}
+ else if (parser->skip_stack &&
+ parser->skip_stack->has_else)
+ {
+ glcpp_error(& @1, parser, "#elif after #else");
+ }
else
{
_glcpp_parser_skip_stack_change_if (parser, & @1,
{
glcpp_error(& @1, parser, "#elif with no expression");
}
+ else if (parser->skip_stack &&
+ parser->skip_stack->has_else)
+ {
+ glcpp_error(& @1, parser, "#elif after #else");
+ }
else
{
_glcpp_parser_skip_stack_change_if (parser, & @1,
glcpp_warning(& @1, parser, "ignoring illegal #elif without expression");
}
}
-| HASH_ELSE {
- _glcpp_parser_skip_stack_change_if (parser, & @1, "else", 1);
- } NEWLINE
+| HASH_ELSE { parser->lexing_directive = 1; } NEWLINE {
+ if (parser->skip_stack &&
+ parser->skip_stack->has_else)
+ {
+ glcpp_error(& @1, parser, "multiple #else");
+ }
+ else
+ {
+ _glcpp_parser_skip_stack_change_if (parser, & @1, "else", 1);
+ if (parser->skip_stack)
+ parser->skip_stack->has_else = true;
+ }
+ }
| HASH_ENDIF {
_glcpp_parser_skip_stack_pop (parser, & @1);
} NEWLINE
| HASH_VERSION integer_constant NEWLINE {
- _glcpp_parser_handle_version_declaration(parser, $2, NULL);
+ 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 {
- _glcpp_parser_handle_version_declaration(parser, $2, $3);
+ 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_implicit_version(parser);
}
-| HASH NEWLINE
;
integer_constant:
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, int api)
+glcpp_parser_create (const struct gl_extensions *extensions, gl_api api)
{
glcpp_parser_t *parser;
- int language_version;
parser = ralloc (NULL, glcpp_parser_t);
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->newline_as_space = 0;
parser->in_control_line = 0;
parser->paren_count = 0;
+ parser->commented_newlines = 0;
parser->skip_stack = NULL;
parser->info_log_length = 0;
parser->error = 0;
+ parser->extensions = extensions;
+ parser->api = api;
+ parser->version_resolved = false;
+
parser->has_new_line_number = 0;
parser->new_line_number = 1;
parser->has_new_source_number = 0;
parser->new_source_number = 0;
- parser->is_gles = false;
-
- /* Add pre-defined macros. */
- if (api == API_OPENGLES2) {
- parser->is_gles = true;
- add_builtin_define(parser, "GL_ES", 1);
-
- if (extensions != NULL) {
- if (extensions->OES_EGL_image_external)
- add_builtin_define(parser, "GL_OES_EGL_image_external", 1);
- }
- } else {
- add_builtin_define(parser, "GL_ARB_draw_buffers", 1);
- add_builtin_define(parser, "GL_ARB_texture_rectangle", 1);
-
- if (extensions != NULL) {
- if (extensions->EXT_texture_array) {
- add_builtin_define(parser, "GL_EXT_texture_array", 1);
- }
-
- if (extensions->ARB_fragment_coord_conventions)
- add_builtin_define(parser, "GL_ARB_fragment_coord_conventions",
- 1);
-
- if (extensions->ARB_explicit_attrib_location)
- add_builtin_define(parser, "GL_ARB_explicit_attrib_location", 1);
-
- if (extensions->ARB_shader_texture_lod)
- add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);
-
- if (extensions->ARB_draw_instanced)
- add_builtin_define(parser, "GL_ARB_draw_instanced", 1);
-
- if (extensions->ARB_conservative_depth) {
- add_builtin_define(parser, "GL_AMD_conservative_depth", 1);
- add_builtin_define(parser, "GL_ARB_conservative_depth", 1);
- }
-
- if (extensions->ARB_shader_bit_encoding)
- add_builtin_define(parser, "GL_ARB_shader_bit_encoding", 1);
-
- if (extensions->ARB_uniform_buffer_object)
- add_builtin_define(parser, "GL_ARB_uniform_buffer_object", 1);
-
- if (extensions->ARB_texture_cube_map_array)
- add_builtin_define(parser, "GL_ARB_texture_cube_map_array", 1);
-
- if (extensions->ARB_shading_language_packing)
- add_builtin_define(parser, "GL_ARB_shading_language_packing", 1);
-
- if (extensions->ARB_texture_multisample)
- add_builtin_define(parser, "GL_ARB_texture_multisample", 1);
-
- if (extensions->ARB_texture_query_lod)
- add_builtin_define(parser, "GL_ARB_texture_query_lod", 1);
-
- if (extensions->ARB_gpu_shader5)
- add_builtin_define(parser, "GL_ARB_gpu_shader5", 1);
-
- if (extensions->AMD_vertex_shader_layer)
- add_builtin_define(parser, "GL_AMD_vertex_shader_layer", 1);
- }
- }
-
- language_version = 110;
- add_builtin_define(parser, "__VERSION__", language_version);
-
return parser;
}
_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");
node->type = SKIP_TO_ENDIF;
}
+ node->has_else = false;
node->next = parser->skip_stack;
parser->skip_stack = node;
}
static void
_glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t version,
- const char *es_identifier)
+ const char *es_identifier,
+ bool explicitly_set)
{
- macro_t *macro = hash_table_find (parser->defines, "__VERSION__");
- if (macro) {
- hash_table_remove (parser->defines, "__VERSION__");
- ralloc_free (macro);
- }
+ const struct gl_extensions *extensions = parser->extensions;
+
+ if (parser->version_resolved)
+ return;
+
+ parser->version_resolved = true;
+
add_builtin_define (parser, "__VERSION__", version);
- /* If we didn't have a GLES context to begin with, (indicated
- * by parser->api), then the version declaration here might
- * indicate GLES. */
- if (! parser->is_gles &&
- (version == 100 ||
- (es_identifier && (strcmp(es_identifier, "es") == 0))))
- {
- parser->is_gles = true;
- add_builtin_define (parser, "GL_ES", 1);
+ parser->is_gles = (version == 100) ||
+ (es_identifier &&
+ (strcmp(es_identifier, "es") == 0));
+
+ /* 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)
+ add_builtin_define(parser, "GL_OES_EGL_image_external", 1);
+ }
+ } 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);
+
+
+ if (extensions != NULL) {
+ if (extensions->EXT_texture_array)
+ add_builtin_define(parser, "GL_EXT_texture_array", 1);
+
+ if (extensions->ARB_arrays_of_arrays)
+ add_builtin_define(parser, "GL_ARB_arrays_of_arrays", 1);
+
+ if (extensions->ARB_fragment_coord_conventions)
+ 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->ARB_draw_instanced)
+ add_builtin_define(parser, "GL_ARB_draw_instanced", 1);
+
+ if (extensions->ARB_conservative_depth) {
+ add_builtin_define(parser, "GL_AMD_conservative_depth", 1);
+ add_builtin_define(parser, "GL_ARB_conservative_depth", 1);
+ }
+
+ if (extensions->ARB_shader_bit_encoding)
+ add_builtin_define(parser, "GL_ARB_shader_bit_encoding", 1);
+
+ if (extensions->ARB_uniform_buffer_object)
+ add_builtin_define(parser, "GL_ARB_uniform_buffer_object", 1);
+
+ if (extensions->ARB_texture_cube_map_array)
+ add_builtin_define(parser, "GL_ARB_texture_cube_map_array", 1);
+
+ if (extensions->ARB_shading_language_packing)
+ add_builtin_define(parser, "GL_ARB_shading_language_packing", 1);
+
+ if (extensions->ARB_texture_multisample)
+ add_builtin_define(parser, "GL_ARB_texture_multisample", 1);
+
+ if (extensions->ARB_texture_query_levels)
+ add_builtin_define(parser, "GL_ARB_texture_query_levels", 1);
+
+ if (extensions->ARB_texture_query_lod)
+ add_builtin_define(parser, "GL_ARB_texture_query_lod", 1);
+
+ if (extensions->ARB_gpu_shader5)
+ add_builtin_define(parser, "GL_ARB_gpu_shader5", 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_sample_shading)
+ add_builtin_define(parser, "GL_ARB_sample_shading", 1);
+
+ if (extensions->ARB_texture_gather)
+ add_builtin_define(parser, "GL_ARB_texture_gather", 1);
+
+ if (extensions->ARB_shader_atomic_counters)
+ add_builtin_define(parser, "GL_ARB_shader_atomic_counters", 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);
+ }
+ }
+
+ if (extensions != NULL) {
+ if (extensions->EXT_shader_integer_mix)
+ add_builtin_define(parser, "GL_EXT_shader_integer_mix", 1);
}
if (version >= 150)
if (version >= 130 || parser->is_gles)
add_builtin_define (parser, "GL_FRAGMENT_PRECISION_HIGH", 1);
- ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length,
- "#version %" PRIiMAX "%s%s", version,
- es_identifier ? " " : "",
- es_identifier ? es_identifier : "");
+ if (explicitly_set) {
+ ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length,
+ "#version %" PRIiMAX "%s%s", version,
+ es_identifier ? " " : "",
+ es_identifier ? es_identifier : "");
+ }
+}
+
+/* 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_implicit_version(glcpp_parser_t *parser)
+{
+ int language_version = parser->api == API_OPENGLES2 ?
+ IMPLICIT_GLSL_ES_VERSION :
+ IMPLICIT_GLSL_VERSION;
+
+ _glcpp_parser_handle_version_declaration(parser, language_version,
+ NULL, false);
}
projects / mesa.git / blobdiff