Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 2369 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_compile.c b/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_compile.c
new file mode 100644
index 000000000..2377173cf
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_compile.c
@@ -0,0 +1,2369 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 2005  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "imports.h"
+#include "grammar_mesa.h"
+#include "slang_utility.h"
+#include "slang_compile.h"
+#include "slang_preprocess.h"
+#include "slang_storage.h"
+#include "slang_assemble.h"
+#include "slang_execute.h"
+
+/*
+	This is a straightforward implementation of the slang front-end compiler.
+	Lots of error-checking functionality is missing but every well-formed shader source should
+	compile successfully and execute as expected. However, some semantically ill-formed shaders
+	may be accepted resulting in undefined behaviour.
+*/
+
+static void slang_variable_construct (slang_variable *);
+static int slang_variable_copy (slang_variable *, const slang_variable *);
+static void slang_struct_destruct (slang_struct *);
+static int slang_struct_equal (const slang_struct *, const slang_struct *);
+static void slang_variable_destruct (slang_variable *);
+
+/* slang_type_specifier_type */
+
+/* these must match with slang_type_specifier_type enum */
+static const char *type_specifier_type_names[] = {
+	"void",
+	"bool",
+	"bvec2",
+	"bvec3",
+	"bvec4",
+	"int",
+	"ivec2",
+	"ivec3",
+	"ivec4",
+	"float",
+	"vec2",
+	"vec3",
+	"vec4",
+	"mat2",
+	"mat3",
+	"mat4",
+	"sampler1D",
+	"sampler2D",
+	"sampler3D",
+	"samplerCube",
+	"sampler1DShadow",
+	"sampler2DShadow",
+	NULL
+};
+
+slang_type_specifier_type slang_type_specifier_type_from_string (const char *name)
+{
+	const char **p = type_specifier_type_names;
+	while (*p != NULL)
+	{
+		if (slang_string_compare (*p, name) == 0)
+			return (slang_type_specifier_type) (p - type_specifier_type_names);
+		p++;
+	}
+	return slang_spec_void;
+}
+
+/* slang_type_specifier */
+
+void slang_type_specifier_construct (slang_type_specifier *spec)
+{
+	spec->type = slang_spec_void;
+	spec->_struct = NULL;
+	spec->_array = NULL;
+}
+
+void slang_type_specifier_destruct (slang_type_specifier *spec)
+{
+	if (spec->_struct != NULL)
+	{
+		slang_struct_destruct (spec->_struct);
+		slang_alloc_free (spec->_struct);
+	}
+	if (spec->_array != NULL)
+	{
+		slang_type_specifier_destruct (spec->_array);
+		slang_alloc_free (spec->_array);
+	}
+}
+
+int slang_type_specifier_copy (slang_type_specifier *x, const slang_type_specifier *y)
+{
+	slang_type_specifier_destruct (x);
+	slang_type_specifier_construct (x);
+	x->type = y->type;
+	if (x->type == slang_spec_struct)
+	{
+		x->_struct = (slang_struct *) slang_alloc_malloc (sizeof (slang_struct));
+		if (x->_struct == NULL)
+			return 0;
+		if (!slang_struct_construct_a (x->_struct))
+		{
+			slang_alloc_free (x->_struct);
+			x->_struct = NULL;
+			return 0;
+		}
+		return slang_struct_copy (x->_struct, y->_struct);
+	}
+	if (x->type == slang_spec_array)
+	{
+		x->_array = (slang_type_specifier *) slang_alloc_malloc (sizeof (slang_type_specifier));
+		if (x->_array == NULL)
+			return 0;
+		slang_type_specifier_construct (x->_array);
+		return slang_type_specifier_copy (x->_array, y->_array);
+	}
+	return 1;
+}
+
+int slang_type_specifier_equal (const slang_type_specifier *x, const slang_type_specifier *y)
+{
+	if (x->type != y->type)
+		return 0;
+	if (x->type == slang_spec_struct)
+		return slang_struct_equal (x->_struct, y->_struct);
+	if (x->type == slang_spec_array)
+		return slang_type_specifier_equal (x->_array, y->_array);
+	return 1;
+}
+
+/* slang_fully_specified_type */
+
+static void slang_fully_specified_type_construct (slang_fully_specified_type *type)
+{
+	type->qualifier = slang_qual_none;
+	slang_type_specifier_construct (&type->specifier);
+}
+
+static void slang_fully_specified_type_destruct (slang_fully_specified_type *type)
+{
+	slang_type_specifier_destruct (&type->specifier);
+}
+
+static int slang_fully_specified_type_copy (slang_fully_specified_type *x,
+	const slang_fully_specified_type *y)
+{
+	slang_fully_specified_type_construct (x);
+	slang_fully_specified_type_destruct (x);
+	x->qualifier = y->qualifier;
+	return slang_type_specifier_copy (&x->specifier, &y->specifier);
+}
+
+/* slang_variable_scope */
+
+static void slang_variable_scope_construct (slang_variable_scope *scope)
+{
+	scope->variables = NULL;
+	scope->num_variables = 0;
+	scope->outer_scope = NULL;
+}
+
+static void slang_variable_scope_destruct (slang_variable_scope *scope)
+{
+	unsigned int i;
+	for (i = 0; i < scope->num_variables; i++)
+		slang_variable_destruct (scope->variables + i);
+	slang_alloc_free (scope->variables);
+}
+
+static int slang_variable_scope_copy (slang_variable_scope *x, const slang_variable_scope *y)
+{
+	unsigned int i;
+	slang_variable_scope_destruct (x);
+	slang_variable_scope_construct (x);
+	x->variables = (slang_variable *) slang_alloc_malloc (y->num_variables * sizeof (
+		slang_variable));
+	if (x->variables == NULL)
+		return 0;
+	x->num_variables = y->num_variables;
+	for (i = 0; i < x->num_variables; i++)
+		slang_variable_construct (x->variables + i);
+	for (i = 0; i < x->num_variables; i++)
+		if (!slang_variable_copy (x->variables + i, y->variables + i))
+			return 0;
+	x->outer_scope = y->outer_scope;
+	return 1;
+}
+
+/* slang_operation */
+
+int slang_operation_construct_a (slang_operation *oper)
+{
+	oper->type = slang_oper_none;
+	oper->children = NULL;
+	oper->num_children = 0;
+	oper->literal = (float) 0;
+	oper->identifier = NULL;
+	oper->locals = (slang_variable_scope *) slang_alloc_malloc (sizeof (slang_variable_scope));
+	if (oper->locals == NULL)
+		return 0;
+	slang_variable_scope_construct (oper->locals);
+	return 1;
+}
+
+void slang_operation_destruct (slang_operation *oper)
+{
+	unsigned int i;
+	for (i = 0; i < oper->num_children; i++)
+		slang_operation_destruct (oper->children + i);
+	slang_alloc_free (oper->children);
+	slang_alloc_free (oper->identifier);
+	slang_variable_scope_destruct (oper->locals);
+	slang_alloc_free (oper->locals);
+}
+
+static int slang_operation_copy (slang_operation *x, const slang_operation *y)
+{
+	unsigned int i;
+	for (i = 0; i < x->num_children; i++)
+		slang_operation_destruct (x->children + i);
+	slang_alloc_free (x->children);
+	x->num_children = 0;
+	slang_alloc_free (x->identifier);
+	x->identifier = NULL;
+	slang_variable_scope_destruct (x->locals);
+	slang_variable_scope_construct (x->locals);
+
+	x->type = y->type;
+	x->children = (slang_operation *) slang_alloc_malloc (y->num_children * sizeof (
+		slang_operation));
+	if (x->children == NULL)
+		return 0;
+	for (i = 0; i < y->num_children; i++)
+		if (!slang_operation_construct_a (x->children + i))
+		{
+			unsigned int j;
+			for (j = 0; j < i; j++)
+				slang_operation_destruct (x->children + j);
+			slang_alloc_free (x->children);
+			x->children = NULL;
+			return 0;
+		}
+	x->num_children = y->num_children;
+	for (i = 0; i < x->num_children; i++)
+		if (!slang_operation_copy (x->children + i, y->children + i))
+			return 0;
+	x->literal = y->literal;
+	if (y->identifier != NULL)
+	{
+		x->identifier = slang_string_duplicate (y->identifier);
+		if (x->identifier == NULL)
+			return 0;
+	}
+	if (!slang_variable_scope_copy (x->locals, y->locals))
+		return 0;
+	return 1;
+}
+
+/* slang_variable */
+
+static void slang_variable_construct (slang_variable *var)
+{
+	slang_fully_specified_type_construct (&var->type);
+	var->name = NULL;
+	var->array_size = NULL;
+	var->initializer = NULL;
+	var->address = ~0;
+}
+
+static void slang_variable_destruct (slang_variable *var)
+{
+	slang_fully_specified_type_destruct (&var->type);
+	slang_alloc_free (var->name);
+	if (var->array_size != NULL)
+	{
+		slang_operation_destruct (var->array_size);
+		slang_alloc_free (var->array_size);
+	}
+	if (var->initializer != NULL)
+	{
+		slang_operation_destruct (var->initializer);
+		slang_alloc_free (var->initializer);
+	}
+}
+
+static int slang_variable_copy (slang_variable *x, const slang_variable *y)
+{
+	slang_variable_destruct (x);
+	slang_variable_construct (x);
+	if (!slang_fully_specified_type_copy (&x->type, &y->type))
+		return 0;
+	if (y->name != NULL)
+	{
+		x->name = slang_string_duplicate (y->name);
+		if (x->name == NULL)
+			return 0;
+	}
+	if (y->array_size != NULL)
+	{
+		x->array_size = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+		if (x->array_size == NULL)
+			return 0;
+		if (!slang_operation_construct_a (x->array_size))
+		{
+			slang_alloc_free (x->array_size);
+			x->array_size = NULL;
+			return 0;
+		}
+		if (!slang_operation_copy (x->array_size, y->array_size))
+			return 0;
+	}
+	if (y->initializer != NULL)
+	{
+		x->initializer = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+		if (x->initializer == NULL)
+			return 0;
+		if (!slang_operation_construct_a (x->initializer))
+		{
+			slang_alloc_free (x->initializer);
+			x->initializer = NULL;
+			return 0;
+		}
+		if (!slang_operation_copy (x->initializer, y->initializer))
+			return 0;
+	}
+	return 1;
+}
+
+slang_variable *_slang_locate_variable (slang_variable_scope *scope, const char *name, int all)
+{
+	unsigned int i;
+	for (i = 0; i < scope->num_variables; i++)
+		if (slang_string_compare (name, scope->variables[i].name) == 0)
+			return scope->variables + i;
+	if (all && scope->outer_scope != NULL)
+		return _slang_locate_variable (scope->outer_scope, name, 1);
+	return NULL;
+}
+
+/* slang_struct_scope */
+
+static void slang_struct_scope_construct (slang_struct_scope *scope)
+{
+	scope->structs = NULL;
+	scope->num_structs = 0;
+	scope->outer_scope = NULL;
+}
+
+static void slang_struct_scope_destruct (slang_struct_scope *scope)
+{
+	unsigned int i;
+	for (i = 0; i < scope->num_structs; i++)
+		slang_struct_destruct (scope->structs + i);
+	slang_alloc_free (scope->structs);
+}
+
+static int slang_struct_scope_copy (slang_struct_scope *x, const slang_struct_scope *y)
+{
+	unsigned int i;
+	slang_struct_scope_destruct (x);
+	slang_struct_scope_construct (x);
+	x->structs = (slang_struct *) slang_alloc_malloc (y->num_structs * sizeof (slang_struct));
+	if (x->structs == NULL)
+		return 0;
+	x->num_structs = y->num_structs;
+	for (i = 0; i < x->num_structs; i++)
+	{
+		unsigned int j;
+		if (!slang_struct_construct_a (x->structs + i))
+		{
+			for (j = 0; j < i; j++)
+				slang_struct_destruct (x->structs + j);
+			slang_alloc_free (x->structs);
+			x->structs = NULL;
+			return 0;
+		}
+	}
+	for (i = 0; i < x->num_structs; i++)
+		if (!slang_struct_copy (x->structs + i, y->structs + i))
+			return 0;
+	x->outer_scope = y->outer_scope;
+	return 1;
+}
+
+slang_struct *slang_struct_scope_find (slang_struct_scope *stru, const char *name, int all_scopes)
+{
+	unsigned int i;
+	for (i = 0; i < stru->num_structs; i++)
+		if (slang_string_compare (name, stru->structs[i].name) == 0)
+			return stru->structs + i;
+	if (all_scopes && stru->outer_scope != NULL)
+		return slang_struct_scope_find (stru->outer_scope, name, 1);
+	return NULL;
+}
+
+/* slang_struct */
+
+int slang_struct_construct_a (slang_struct *stru)
+{
+	stru->name = NULL;
+	stru->fields = (slang_variable_scope *) slang_alloc_malloc (sizeof (slang_variable_scope));
+	if (stru->fields == NULL)
+		return 0;
+	slang_variable_scope_construct (stru->fields);
+	stru->structs = (slang_struct_scope *) slang_alloc_malloc (sizeof (slang_struct_scope));
+	if (stru->structs == NULL)
+	{
+		slang_variable_scope_destruct (stru->fields);
+		slang_alloc_free (stru->fields);
+		return 0;
+	}
+	slang_struct_scope_construct (stru->structs);
+	return 1;
+}
+
+static void slang_struct_destruct (slang_struct *stru)
+{
+	slang_alloc_free (stru->name);
+	slang_variable_scope_destruct (stru->fields);
+	slang_alloc_free (stru->fields);
+	slang_struct_scope_destruct (stru->structs);
+	slang_alloc_free (stru->structs);
+}
+
+int slang_struct_copy (slang_struct *x, const slang_struct *y)
+{
+	slang_alloc_free (x->name);
+	x->name = NULL;
+	slang_variable_scope_destruct (x->fields);
+	slang_variable_scope_construct (x->fields);
+	slang_struct_scope_destruct (x->structs);
+	slang_struct_scope_construct (x->structs);
+	if (y->name != NULL)
+	{
+		x->name = slang_string_duplicate (y->name);
+		if (x->name == NULL)
+			return 0;
+	}
+	if (!slang_variable_scope_copy (x->fields, y->fields))
+		return 0;
+	if (!slang_struct_scope_copy (x->structs, y->structs))
+		return 0;
+	return 1;
+}
+
+static int slang_struct_equal (const slang_struct *x, const slang_struct *y)
+{
+	unsigned int i;
+	if (x->fields->num_variables != y->fields->num_variables)
+		return 0;
+	for (i = 0; i < x->fields->num_variables; i++)
+	{
+		slang_variable *varx = x->fields->variables + i;
+		slang_variable *vary = y->fields->variables + i;
+		if (slang_string_compare (varx->name, vary->name) != 0)
+			return 0;
+		if (!slang_type_specifier_equal (&varx->type.specifier, &vary->type.specifier))
+			return 0;
+		if (varx->type.specifier.type == slang_spec_array)
+		{
+			/* TODO compare array sizes */
+		}
+	}
+	return 1;
+}
+
+/* slang_function */
+/* XXX mem! */
+static void slang_function_construct (slang_function *func)
+{
+	func->kind = slang_func_ordinary;
+	slang_variable_construct (&func->header);
+	func->parameters = (slang_variable_scope *) slang_alloc_malloc (sizeof (slang_variable_scope));
+	slang_variable_scope_construct (func->parameters);
+	func->body = NULL;
+	func->address = ~0;
+}
+
+static void slang_function_destruct (slang_function *func)
+{
+	slang_variable_destruct (&func->header);
+	slang_variable_scope_destruct (func->parameters);
+	slang_alloc_free (func->parameters);
+	if (func->body != NULL)
+	{
+		slang_operation_destruct (func->body);
+		slang_alloc_free (func->body);
+	}
+}
+
+/* slang_function_scope */
+
+static void slang_function_scope_construct (slang_function_scope *scope)
+{
+	scope->functions = NULL;
+	scope->num_functions = 0;
+	scope->outer_scope = NULL;
+}
+
+static void slang_function_scope_destruct (slang_function_scope *scope)
+{
+	unsigned int i;
+	for (i = 0; i < scope->num_functions; i++)
+		slang_function_destruct (scope->functions + i);
+	slang_alloc_free (scope->functions);
+}
+
+static int slang_function_scope_find_by_name (slang_function_scope *funcs, const char *name,
+	int all_scopes)
+{
+	unsigned int i;
+	for (i = 0; i < funcs->num_functions; i++)
+		if (slang_string_compare (name, funcs->functions[i].header.name) == 0)
+			return 1;
+	if (all_scopes && funcs->outer_scope != NULL)
+		return slang_function_scope_find_by_name (funcs->outer_scope, name, 1);
+	return 0;
+}
+
+static slang_function *slang_function_scope_find (slang_function_scope *funcs, slang_function *fun,
+	int all_scopes)
+{
+	unsigned int i;
+	for (i = 0; i < funcs->num_functions; i++)
+	{
+		slang_function *f = funcs->functions + i;
+		unsigned int j;
+		if (slang_string_compare (fun->header.name, f->header.name) != 0)
+			continue;
+		if (fun->param_count != f->param_count)
+			continue;
+		for (j = 0; j < fun->param_count; j++)
+		{
+			if (!slang_type_specifier_equal (&fun->parameters->variables[j].type.specifier,
+				&f->parameters->variables[j].type.specifier))
+			{
+				break;
+			}
+		}
+		if (j == fun->param_count)
+			return f;
+	}
+	if (all_scopes && funcs->outer_scope != NULL)
+		return slang_function_scope_find (funcs->outer_scope, fun, 1);
+	return NULL;
+}
+
+/* slang_translation_unit */
+
+void slang_translation_unit_construct (slang_translation_unit *unit)
+{
+	slang_variable_scope_construct (&unit->globals);
+	slang_function_scope_construct (&unit->functions);
+	slang_struct_scope_construct (&unit->structs);
+}
+
+void slang_translation_unit_destruct (slang_translation_unit *unit)
+{
+	slang_variable_scope_destruct (&unit->globals);
+	slang_function_scope_destruct (&unit->functions);
+	slang_struct_scope_destruct (&unit->structs);
+}
+
+/* slang_info_log */
+
+static char *out_of_memory = "error: out of memory\n";
+
+void slang_info_log_construct (slang_info_log *log)
+{
+	log->text = NULL;
+	log->dont_free_text = 0;
+}
+
+void slang_info_log_destruct (slang_info_log *log)
+{
+	if (!log->dont_free_text)
+		slang_alloc_free (log->text);
+}
+
+static int slang_info_log_message (slang_info_log *log, const char *prefix, const char *msg)
+{
+	unsigned int new_size;
+	if (log->dont_free_text)
+		return 0;
+	new_size = slang_string_length (prefix) + 3 + slang_string_length (msg);
+	if (log->text != NULL)
+	{
+		log->text = (char *) slang_alloc_realloc (log->text, slang_string_length (log->text) + 1,
+			new_size + slang_string_length (log->text) + 1);
+	}
+	else
+	{
+		log->text = (char *) slang_alloc_malloc (new_size + 1);
+		if (log->text != NULL)
+			*log->text = '\0';
+	}
+	if (log->text == NULL)
+		return 0;
+	slang_string_concat (log->text, prefix);
+	slang_string_concat (log->text, ": ");
+	slang_string_concat (log->text, msg);
+	slang_string_concat (log->text, "\n");
+	return 1;
+}
+
+int slang_info_log_error (slang_info_log *log, const char *msg, ...)
+{
+	va_list va;
+	char buf[1024];
+
+	va_start (va, msg);
+	vsprintf (buf, msg, va);
+	if (slang_info_log_message (log, "error", buf))
+		return 1;
+	slang_info_log_memory (log);
+	va_end (va);
+	return 0;
+}
+
+int slang_info_log_warning (slang_info_log *log, const char *msg, ...)
+{
+	va_list va;
+	char buf[1024];
+
+	va_start (va, msg);
+	vsprintf (buf, msg, va);
+	if (slang_info_log_message (log, "warning", buf))
+		return 1;
+	slang_info_log_memory (log);
+	va_end (va);
+	return 0;
+}
+
+void slang_info_log_memory (slang_info_log *log)
+{
+	if (!slang_info_log_message (log, "error", "out of memory"))
+	{
+		log->dont_free_text = 1;
+		log->text = out_of_memory;
+	}
+}
+
+/* slang_parse_ctx */
+
+typedef struct slang_parse_ctx_
+{
+	const byte *I;
+	slang_info_log *L;
+	int parsing_builtin;
+} slang_parse_ctx;
+
+/* _slang_compile() */
+
+static int parse_identifier (slang_parse_ctx *C, char **id)
+{
+	*id = slang_string_duplicate ((const char *) C->I);
+	if (*id == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	C->I += strlen ((const char *) C->I) + 1;
+	return 1;
+}
+
+static int parse_number (slang_parse_ctx *C, int *number)
+{
+	const int radix = (int) (*C->I++);
+	*number = 0;
+	while (*C->I != '\0')
+	{
+		int digit;
+		if (*C->I >= '0' && *C->I <= '9')
+			digit = (int) (*C->I - '0');
+		else if (*C->I >= 'A' && *C->I <= 'Z')
+			digit = (int) (*C->I - 'A') + 10;
+		else
+			digit = (int) (*C->I - 'a') + 10;
+		*number = *number * radix + digit;
+		C->I++;
+	}
+	C->I++;
+	if (*number > 65535)
+		slang_info_log_warning (C->L, "%d: literal integer overflow", *number);
+	return 1;
+}
+
+static int parse_float (slang_parse_ctx *C, float *number)
+{
+	char *integral = NULL;
+	char *fractional = NULL;
+	char *exponent = NULL;
+	char *whole = NULL;
+
+	if (!parse_identifier (C, &integral))
+		return 0;
+
+	if (!parse_identifier (C, &fractional))
+	{
+		slang_alloc_free (integral);
+		return 0;
+	}
+
+	if (!parse_identifier (C, &exponent))
+	{
+		slang_alloc_free (fractional);
+		slang_alloc_free (integral);
+		return 0;
+	}
+
+	whole = (char *) (slang_alloc_malloc ((strlen (integral) + strlen (fractional) + strlen (
+		exponent) + 3) * sizeof (char)));
+	if (whole == NULL)
+	{
+		slang_alloc_free (exponent);
+		slang_alloc_free (fractional);
+		slang_alloc_free (integral);
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+
+	slang_string_copy (whole, integral);
+	slang_string_concat (whole, ".");
+	slang_string_concat (whole, fractional);
+	slang_string_concat (whole, "E");
+	slang_string_concat (whole, exponent);
+
+	*number = (float) (atof (whole));
+
+	slang_alloc_free (whole);
+	slang_alloc_free (exponent);
+	slang_alloc_free (fractional);
+	slang_alloc_free (integral);
+	return 1;
+}
+
+/* revision number - increment after each change affecting emitted output */
+#define REVISION 2
+
+static int check_revision (slang_parse_ctx *C)
+{
+	if (*C->I != REVISION)
+	{
+		slang_info_log_error (C->L, "internal compiler error");
+		return 0;
+	}
+	C->I++;
+	return 1;
+}
+
+static int parse_statement (slang_parse_ctx *, slang_operation *, slang_variable_scope *,
+	slang_struct_scope *, slang_function_scope *);
+static int parse_expression (slang_parse_ctx *, slang_operation *, slang_variable_scope *,
+	slang_struct_scope *, slang_function_scope *);
+
+/* type qualifier */
+#define TYPE_QUALIFIER_NONE 0
+#define TYPE_QUALIFIER_CONST 1
+#define TYPE_QUALIFIER_ATTRIBUTE 2
+#define TYPE_QUALIFIER_VARYING 3
+#define TYPE_QUALIFIER_UNIFORM 4
+#define TYPE_QUALIFIER_FIXEDOUTPUT 5
+#define TYPE_QUALIFIER_FIXEDINPUT 6
+
+static int parse_type_qualifier (slang_parse_ctx *C, slang_type_qualifier *qual)
+{
+	switch (*C->I++)
+	{
+	case TYPE_QUALIFIER_NONE:
+		*qual = slang_qual_none;
+		break;
+	case TYPE_QUALIFIER_CONST:
+		*qual = slang_qual_const;
+		break;
+	case TYPE_QUALIFIER_ATTRIBUTE:
+		*qual = slang_qual_attribute;
+		break;
+	case TYPE_QUALIFIER_VARYING:
+		*qual = slang_qual_varying;
+		break;
+	case TYPE_QUALIFIER_UNIFORM:
+		*qual = slang_qual_uniform;
+		break;
+	case TYPE_QUALIFIER_FIXEDOUTPUT:
+		*qual = slang_qual_fixedoutput;
+		break;
+	case TYPE_QUALIFIER_FIXEDINPUT:
+		*qual = slang_qual_fixedinput;
+		break;
+	default:
+		return 0;
+	}
+	return 1;
+}
+
+/* type specifier */
+#define TYPE_SPECIFIER_VOID 0
+#define TYPE_SPECIFIER_BOOL 1
+#define TYPE_SPECIFIER_BVEC2 2
+#define TYPE_SPECIFIER_BVEC3 3
+#define TYPE_SPECIFIER_BVEC4 4
+#define TYPE_SPECIFIER_INT 5
+#define TYPE_SPECIFIER_IVEC2 6
+#define TYPE_SPECIFIER_IVEC3 7
+#define TYPE_SPECIFIER_IVEC4 8
+#define TYPE_SPECIFIER_FLOAT 9
+#define TYPE_SPECIFIER_VEC2 10
+#define TYPE_SPECIFIER_VEC3 11
+#define TYPE_SPECIFIER_VEC4 12
+#define TYPE_SPECIFIER_MAT2 13
+#define TYPE_SPECIFIER_MAT3 14
+#define TYPE_SPECIFIER_MAT4 15
+#define TYPE_SPECIFIER_SAMPLER1D 16
+#define TYPE_SPECIFIER_SAMPLER2D 17
+#define TYPE_SPECIFIER_SAMPLER3D 18
+#define TYPE_SPECIFIER_SAMPLERCUBE 19
+#define TYPE_SPECIFIER_SAMPLER1DSHADOW 20
+#define TYPE_SPECIFIER_SAMPLER2DSHADOW 21
+#define TYPE_SPECIFIER_STRUCT 22
+#define TYPE_SPECIFIER_TYPENAME 23
+
+/* structure field */
+#define FIELD_NONE 0
+#define FIELD_NEXT 1
+#define FIELD_ARRAY 2
+
+static int parse_type_specifier (slang_parse_ctx *C, slang_type_specifier *spec,
+	slang_struct_scope *structs, slang_variable_scope *scope, slang_function_scope *funcs)
+{
+	switch (*C->I++)
+	{
+	case TYPE_SPECIFIER_VOID:
+		spec->type = slang_spec_void;
+		break;
+	case TYPE_SPECIFIER_BOOL:
+		spec->type = slang_spec_bool;
+		break;
+	case TYPE_SPECIFIER_BVEC2:
+		spec->type = slang_spec_bvec2;
+		break;
+	case TYPE_SPECIFIER_BVEC3:
+		spec->type = slang_spec_bvec3;
+		break;
+	case TYPE_SPECIFIER_BVEC4:
+		spec->type = slang_spec_bvec4;
+		break;
+	case TYPE_SPECIFIER_INT:
+		spec->type = slang_spec_int;
+		break;
+	case TYPE_SPECIFIER_IVEC2:
+		spec->type = slang_spec_ivec2;
+		break;
+	case TYPE_SPECIFIER_IVEC3:
+		spec->type = slang_spec_ivec3;
+		break;
+	case TYPE_SPECIFIER_IVEC4:
+		spec->type = slang_spec_ivec4;
+		break;
+	case TYPE_SPECIFIER_FLOAT:
+		spec->type = slang_spec_float;
+		break;
+	case TYPE_SPECIFIER_VEC2:
+		spec->type = slang_spec_vec2;
+		break;
+	case TYPE_SPECIFIER_VEC3:
+		spec->type = slang_spec_vec3;
+		break;
+	case TYPE_SPECIFIER_VEC4:
+		spec->type = slang_spec_vec4;
+		break;
+	case TYPE_SPECIFIER_MAT2:
+		spec->type = slang_spec_mat2;
+		break;
+	case TYPE_SPECIFIER_MAT3:
+		spec->type = slang_spec_mat3;
+		break;
+	case TYPE_SPECIFIER_MAT4:
+		spec->type = slang_spec_mat4;
+		break;
+	case TYPE_SPECIFIER_SAMPLER1D:
+		spec->type = slang_spec_sampler1D;
+		break;
+	case TYPE_SPECIFIER_SAMPLER2D:
+		spec->type = slang_spec_sampler2D;
+		break;
+	case TYPE_SPECIFIER_SAMPLER3D:
+		spec->type = slang_spec_sampler3D;
+		break;
+	case TYPE_SPECIFIER_SAMPLERCUBE:
+		spec->type = slang_spec_samplerCube;
+		break;
+	case TYPE_SPECIFIER_SAMPLER1DSHADOW:
+		spec->type = slang_spec_sampler1DShadow;
+		break;
+	case TYPE_SPECIFIER_SAMPLER2DSHADOW:
+		spec->type = slang_spec_sampler2DShadow;
+		break;
+	case TYPE_SPECIFIER_STRUCT:
+		spec->type = slang_spec_struct;
+		{
+			char *name;
+			if (!parse_identifier (C, &name))
+				return 0;
+			if (*name != '\0' && slang_struct_scope_find (structs, name, 0) != NULL)
+			{
+				slang_info_log_error (C->L, "%s: duplicate type name", name);
+				slang_alloc_free (name);
+				return 0;
+			}
+			spec->_struct = (slang_struct *) slang_alloc_malloc (sizeof (slang_struct));
+			if (spec->_struct == NULL)
+			{
+				slang_alloc_free (name);
+				slang_info_log_memory (C->L);
+				return 0;
+			}
+			if (!slang_struct_construct_a (spec->_struct))
+			{
+				slang_alloc_free (spec->_struct);
+				spec->_struct = NULL;
+				slang_alloc_free (name);
+				slang_info_log_memory (C->L);
+				return 0;
+			}
+			spec->_struct->name = name;
+			spec->_struct->structs->outer_scope = structs;
+		}
+		do
+		{
+			slang_type_specifier sp;
+			slang_type_specifier_construct (&sp);
+			if (!parse_type_specifier (C, &sp, spec->_struct->structs, scope, funcs))
+			{
+				slang_type_specifier_destruct (&sp);
+				return 0;
+			}
+			do
+			{
+				slang_variable *var;
+				spec->_struct->fields->variables = (slang_variable *) slang_alloc_realloc (
+					spec->_struct->fields->variables,
+					spec->_struct->fields->num_variables * sizeof (slang_variable),
+					(spec->_struct->fields->num_variables + 1) * sizeof (slang_variable));
+				if (spec->_struct->fields->variables == NULL)
+				{
+					slang_type_specifier_destruct (&sp);
+					slang_info_log_memory (C->L);
+					return 0;
+				}
+				var = spec->_struct->fields->variables + spec->_struct->fields->num_variables;
+				spec->_struct->fields->num_variables++;
+				slang_variable_construct (var);
+				if (!slang_type_specifier_copy (&var->type.specifier, &sp))
+				{
+					slang_type_specifier_destruct (&sp);
+					return 0;
+				}
+				if (!parse_identifier (C, &var->name))
+				{
+					slang_type_specifier_destruct (&sp);
+					return 0;
+				}
+				switch (*C->I++)
+				{
+				case FIELD_NONE:
+					break;
+				case FIELD_ARRAY:
+					var->array_size = (slang_operation *) slang_alloc_malloc (sizeof (
+						slang_operation));
+					if (var->array_size == NULL)
+					{
+						slang_type_specifier_destruct (&sp);
+						slang_info_log_memory (C->L);
+						return 0;
+					}
+					if (!slang_operation_construct_a (var->array_size))
+					{
+						slang_alloc_free (var->array_size);
+						var->array_size = NULL;
+						slang_type_specifier_destruct (&sp);
+						slang_info_log_memory (C->L);
+						return 0;
+					}
+					if (!parse_expression (C, var->array_size, scope, structs, funcs))
+					{
+						slang_type_specifier_destruct (&sp);
+						return 0;
+					}
+					break;
+				default:
+					return 0;
+				}
+			}
+			while (*C->I++ != FIELD_NONE);
+		}
+		while (*C->I++ != FIELD_NONE);
+		if (*spec->_struct->name != '\0')
+		{
+			slang_struct *s;
+			structs->structs = (slang_struct *) slang_alloc_realloc (structs->structs,
+				structs->num_structs * sizeof (slang_struct),
+				(structs->num_structs + 1) * sizeof (slang_struct));
+			if (structs->structs == NULL)
+			{
+				slang_info_log_memory (C->L);
+				return 0;
+			}
+			s = structs->structs + structs->num_structs;
+			if (!slang_struct_construct_a (s))
+				return 0;
+			structs->num_structs++;
+			if (!slang_struct_copy (s, spec->_struct))
+				return 0;
+		}
+		break;
+	case TYPE_SPECIFIER_TYPENAME:
+		spec->type = slang_spec_struct;
+		{
+			char *name;
+			slang_struct *stru;
+			if (!parse_identifier (C, &name))
+				return 0;
+			stru = slang_struct_scope_find (structs, name, 1);
+			if (stru == NULL)
+			{
+				slang_info_log_error (C->L, "%s: undeclared type name", name);
+				slang_alloc_free (name);
+				return 0;
+			}
+			slang_alloc_free (name);
+			spec->_struct = (slang_struct *) slang_alloc_malloc (sizeof (slang_struct));
+			if (spec->_struct == NULL)
+			{
+				slang_info_log_memory (C->L);
+				return 0;
+			}
+			if (!slang_struct_construct_a (spec->_struct))
+			{
+				slang_alloc_free (spec->_struct);
+				spec->_struct = NULL;
+				return 0;
+			}
+			if (!slang_struct_copy (spec->_struct, stru))
+				return 0;
+		}
+		break;
+	default:
+		return 0;
+	}
+	return 1;
+}
+
+static int parse_fully_specified_type (slang_parse_ctx *C, slang_fully_specified_type *type,
+	slang_struct_scope *structs, slang_variable_scope *scope, slang_function_scope *funcs)
+{
+	if (!parse_type_qualifier (C, &type->qualifier))
+		return 0;
+	return parse_type_specifier (C, &type->specifier, structs, scope, funcs);
+}
+
+/* operation */
+#define OP_END 0
+#define OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
+#define OP_BLOCK_BEGIN_NEW_SCOPE 2
+#define OP_DECLARE 3
+#define OP_ASM 4
+#define OP_BREAK 5
+#define OP_CONTINUE 6
+#define OP_DISCARD 7
+#define OP_RETURN 8
+#define OP_EXPRESSION 9
+#define OP_IF 10
+#define OP_WHILE 11
+#define OP_DO 12
+#define OP_FOR 13
+#define OP_PUSH_VOID 14
+#define OP_PUSH_BOOL 15
+#define OP_PUSH_INT 16
+#define OP_PUSH_FLOAT 17
+#define OP_PUSH_IDENTIFIER 18
+#define OP_SEQUENCE 19
+#define OP_ASSIGN 20
+#define OP_ADDASSIGN 21
+#define OP_SUBASSIGN 22
+#define OP_MULASSIGN 23
+#define OP_DIVASSIGN 24
+/*#define OP_MODASSIGN 25*/
+/*#define OP_LSHASSIGN 26*/
+/*#define OP_RSHASSIGN 27*/
+/*#define OP_ORASSIGN 28*/
+/*#define OP_XORASSIGN 29*/
+/*#define OP_ANDASSIGN 30*/
+#define OP_SELECT 31
+#define OP_LOGICALOR 32
+#define OP_LOGICALXOR 33
+#define OP_LOGICALAND 34
+/*#define OP_BITOR 35*/
+/*#define OP_BITXOR 36*/
+/*#define OP_BITAND 37*/
+#define OP_EQUAL 38
+#define OP_NOTEQUAL 39
+#define OP_LESS 40
+#define OP_GREATER 41
+#define OP_LESSEQUAL 42
+#define OP_GREATEREQUAL 43
+/*#define OP_LSHIFT 44*/
+/*#define OP_RSHIFT 45*/
+#define OP_ADD 46
+#define OP_SUBTRACT 47
+#define OP_MULTIPLY 48
+#define OP_DIVIDE 49
+/*#define OP_MODULUS 50*/
+#define OP_PREINCREMENT 51
+#define OP_PREDECREMENT 52
+#define OP_PLUS 53
+#define OP_MINUS 54
+/*#define OP_COMPLEMENT 55*/
+#define OP_NOT 56
+#define OP_SUBSCRIPT 57
+#define OP_CALL 58
+#define OP_FIELD 59
+#define OP_POSTINCREMENT 60
+#define OP_POSTDECREMENT 61
+
+static int parse_child_operation (slang_parse_ctx *C, slang_operation *oper, int statement,
+	slang_variable_scope *scope, slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	oper->children = (slang_operation *) slang_alloc_realloc (oper->children,
+		oper->num_children * sizeof (slang_operation),
+		(oper->num_children + 1) * sizeof (slang_operation));
+	if (oper->children == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	if (!slang_operation_construct_a (oper->children + oper->num_children))
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	oper->num_children++;
+	if (statement)
+		return parse_statement (C, oper->children + oper->num_children - 1, scope, structs, funcs);
+	return parse_expression (C, oper->children + oper->num_children - 1, scope, structs, funcs);
+}
+
+static int parse_declaration (slang_parse_ctx *C, slang_variable_scope *, slang_struct_scope *,
+	slang_function_scope *);
+
+static int parse_statement (slang_parse_ctx *C, slang_operation *oper, slang_variable_scope *scope,
+	slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	oper->locals->outer_scope = scope;
+	switch (*C->I++)
+	{
+	case OP_BLOCK_BEGIN_NO_NEW_SCOPE:
+		oper->type = slang_oper_block_no_new_scope;
+		while (*C->I != OP_END)
+			if (!parse_child_operation (C, oper, 1, scope, structs, funcs))
+				return 0;
+		C->I++;
+		break;
+	case OP_BLOCK_BEGIN_NEW_SCOPE:
+		oper->type = slang_oper_block_new_scope;
+		while (*C->I != OP_END)
+			if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+				return 0;
+		C->I++;
+		break;
+	case OP_DECLARE:
+		oper->type = slang_oper_variable_decl;
+		{
+			const unsigned int first_var = scope->num_variables;
+			if (!parse_declaration (C, scope, structs, funcs))
+				return 0;
+			if (first_var < scope->num_variables)
+			{
+				const unsigned int num_vars = scope->num_variables - first_var;
+				unsigned int i;
+				oper->children = (slang_operation *) slang_alloc_malloc (num_vars * sizeof (
+					slang_operation));
+				if (oper->children == NULL)
+				{
+					slang_info_log_memory (C->L);
+					return 0;
+				}
+				for (i = 0; i < num_vars; i++)
+					if (!slang_operation_construct_a (oper->children + i))
+					{
+						unsigned int j;
+						for (j = 0; j < i; j++)
+							slang_operation_destruct (oper->children + j);
+						slang_alloc_free (oper->children);
+						oper->children = NULL;
+						slang_info_log_memory (C->L);
+						return 0;
+					}
+				oper->num_children = num_vars;
+				for (i = first_var; i < scope->num_variables; i++)
+				{
+					slang_operation *o = oper->children + i - first_var;
+					o->type = slang_oper_identifier;
+					o->locals->outer_scope = scope;
+					o->identifier = slang_string_duplicate (scope->variables[i].name);
+					if (o->identifier == NULL)
+					{
+						slang_info_log_memory (C->L);
+						return 0;
+					}
+				}
+			}
+		}
+		break;
+	case OP_ASM:
+		oper->type = slang_oper_asm;
+		if (!parse_identifier (C, &oper->identifier))
+			return 0;
+		while (*C->I != OP_END)
+			if (!parse_child_operation (C, oper, 0, scope, structs, funcs))
+				return 0;
+		C->I++;
+		break;
+	case OP_BREAK:
+		oper->type = slang_oper_break;
+		break;
+	case OP_CONTINUE:
+		oper->type = slang_oper_continue;
+		break;
+	case OP_DISCARD:
+		oper->type = slang_oper_discard;
+		break;
+	case OP_RETURN:
+		oper->type = slang_oper_return;
+		if (!parse_child_operation (C, oper, 0, scope, structs, funcs))
+			return 0;
+		break;
+	case OP_EXPRESSION:
+		oper->type = slang_oper_expression;
+		if (!parse_child_operation (C, oper, 0, scope, structs, funcs))
+			return 0;
+		break;
+	case OP_IF:
+		oper->type = slang_oper_if;
+		if (!parse_child_operation (C, oper, 0, scope, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 1, scope, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 1, scope, structs, funcs))
+			return 0;
+		break;
+	case OP_WHILE:
+		oper->type = slang_oper_while;
+		if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+			return 0;
+		break;
+	case OP_DO:
+		oper->type = slang_oper_do;
+		if (!parse_child_operation (C, oper, 1, scope, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 0, scope, structs, funcs))
+			return 0;
+		break;
+	case OP_FOR:
+		oper->type = slang_oper_for;
+		if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 0, oper->locals, structs, funcs))
+			return 0;
+		if (!parse_child_operation (C, oper, 1, oper->locals, structs, funcs))
+			return 0;
+		break;
+	default:
+		return 0;
+	}
+	return 1;
+}
+
+static int handle_trinary_expression (slang_parse_ctx *C, slang_operation *op,
+	slang_operation **ops, unsigned int *num_ops)
+{
+	op->num_children = 3;
+	op->children = (slang_operation *) slang_alloc_malloc (3 * sizeof (slang_operation));
+	if (op->children == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	op->children[0] = (*ops)[*num_ops - 4];
+	op->children[1] = (*ops)[*num_ops - 3];
+	op->children[2] = (*ops)[*num_ops - 2];
+	(*ops)[*num_ops - 4] = (*ops)[*num_ops - 1];
+	*num_ops -= 3;
+	*ops = (slang_operation *) slang_alloc_realloc (*ops, (*num_ops + 3) * sizeof (slang_operation),
+		*num_ops * sizeof (slang_operation));
+	if (*ops == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	return 1;
+}
+
+static int handle_binary_expression (slang_parse_ctx *C, slang_operation *op,
+	slang_operation **ops, unsigned int *num_ops)
+{
+	op->num_children = 2;
+	op->children = (slang_operation *) slang_alloc_malloc (2 * sizeof (slang_operation));
+	if (op->children == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	op->children[0] = (*ops)[*num_ops - 3];
+	op->children[1] = (*ops)[*num_ops - 2];
+	(*ops)[*num_ops - 3] = (*ops)[*num_ops - 1];
+	*num_ops -= 2;
+	*ops = (slang_operation *) slang_alloc_realloc (*ops, (*num_ops + 2) * sizeof (slang_operation),
+		*num_ops * sizeof (slang_operation));
+	if (*ops == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	return 1;
+}
+
+static int handle_unary_expression (slang_parse_ctx *C, slang_operation *op,
+	slang_operation **ops, unsigned int *num_ops)
+{
+	op->num_children = 1;
+	op->children = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+	if (op->children == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	op->children[0] = (*ops)[*num_ops - 2];
+	(*ops)[*num_ops - 2] = (*ops)[*num_ops - 1];
+	(*num_ops)--;
+	*ops = (slang_operation *) slang_alloc_realloc (*ops, (*num_ops + 1) * sizeof (slang_operation),
+		*num_ops * sizeof (slang_operation));
+	if (*ops == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	return 1;
+}
+
+static int is_constructor_name (const char *name, slang_struct_scope *structs)
+{
+	if (slang_type_specifier_type_from_string (name) != slang_spec_void)
+		return 1;
+	return slang_struct_scope_find (structs, name, 1) != NULL;
+}
+
+static int parse_expression (slang_parse_ctx *C, slang_operation *oper, slang_variable_scope *scope,
+	slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	slang_operation *ops = NULL;
+	unsigned int num_ops = 0;
+	int number;
+
+	while (*C->I != OP_END)
+	{
+		slang_operation *op;
+		const unsigned int op_code = *C->I++;
+		ops = (slang_operation *) slang_alloc_realloc (ops,
+			num_ops * sizeof (slang_operation), (num_ops + 1) * sizeof (slang_operation));
+		if (ops == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		op = ops + num_ops;
+		if (!slang_operation_construct_a (op))
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		num_ops++;
+		op->locals->outer_scope = scope;
+		switch (op_code)
+		{
+		case OP_PUSH_VOID:
+			op->type = slang_oper_void;
+			break;
+		case OP_PUSH_BOOL:
+			op->type = slang_oper_literal_bool;
+			if (!parse_number (C, &number))
+				return 0;
+			op->literal = (float) number;
+			break;
+		case OP_PUSH_INT:
+			op->type = slang_oper_literal_int;
+			if (!parse_number (C, &number))
+				return 0;
+			op->literal = (float) number;
+			break;
+		case OP_PUSH_FLOAT:
+			op->type = slang_oper_literal_float;
+			if (!parse_float (C, &op->literal))
+				return 0;
+			break;
+		case OP_PUSH_IDENTIFIER:
+			op->type = slang_oper_identifier;
+			if (!parse_identifier (C, &op->identifier))
+				return 0;
+			break;
+		case OP_SEQUENCE:
+			op->type = slang_oper_sequence;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_ASSIGN:
+			op->type = slang_oper_assign;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_ADDASSIGN:
+			op->type = slang_oper_addassign;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_SUBASSIGN:
+			op->type = slang_oper_subassign;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_MULASSIGN:
+			op->type = slang_oper_mulassign;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_DIVASSIGN:
+			op->type = slang_oper_divassign;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		/*case OP_MODASSIGN:*/
+		/*case OP_LSHASSIGN:*/
+		/*case OP_RSHASSIGN:*/
+		/*case OP_ORASSIGN:*/
+		/*case OP_XORASSIGN:*/
+		/*case OP_ANDASSIGN:*/
+		case OP_SELECT:
+			op->type = slang_oper_select;
+			if (!handle_trinary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_LOGICALOR:
+			op->type = slang_oper_logicalor;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_LOGICALXOR:
+			op->type = slang_oper_logicalxor;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_LOGICALAND:
+			op->type = slang_oper_logicaland;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		/*case OP_BITOR:*/
+		/*case OP_BITXOR:*/
+		/*case OP_BITAND:*/
+		case OP_EQUAL:
+			op->type = slang_oper_equal;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_NOTEQUAL:
+			op->type = slang_oper_notequal;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_LESS:
+			op->type = slang_oper_less;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_GREATER:
+			op->type = slang_oper_greater;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_LESSEQUAL:
+			op->type = slang_oper_lessequal;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_GREATEREQUAL:
+			op->type = slang_oper_greaterequal;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		/*case OP_LSHIFT:*/
+		/*case OP_RSHIFT:*/
+		case OP_ADD:
+			op->type = slang_oper_add;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_SUBTRACT:
+			op->type = slang_oper_subtract;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_MULTIPLY:
+			op->type = slang_oper_multiply;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_DIVIDE:
+			op->type = slang_oper_divide;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		/*case OP_MODULUS:*/
+		case OP_PREINCREMENT:
+			op->type = slang_oper_preincrement;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_PREDECREMENT:
+			op->type = slang_oper_predecrement;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_PLUS:
+			op->type = slang_oper_plus;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_MINUS:
+			op->type = slang_oper_minus;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_NOT:
+			op->type = slang_oper_not;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		/*case OP_COMPLEMENT:*/
+		case OP_SUBSCRIPT:
+			op->type = slang_oper_subscript;
+			if (!handle_binary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_CALL:
+			op->type = slang_oper_call;
+			if (!parse_identifier (C, &op->identifier))
+				return 0;
+			while (*C->I != OP_END)
+				if (!parse_child_operation (C, op, 0, scope, structs, funcs))
+					return 0;
+			C->I++;
+			if (!C->parsing_builtin &&
+				!slang_function_scope_find_by_name (funcs, op->identifier, 1) &&
+				!is_constructor_name (op->identifier, structs))
+			{
+				slang_info_log_error (C->L, "%s: undeclared function name", op->identifier);
+				return 0;
+			}
+			break;
+		case OP_FIELD:
+			op->type = slang_oper_field;
+			if (!parse_identifier (C, &op->identifier))
+				return 0;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_POSTINCREMENT:
+			op->type = slang_oper_postincrement;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		case OP_POSTDECREMENT:
+			op->type = slang_oper_postdecrement;
+			if (!handle_unary_expression (C, op, &ops, &num_ops))
+				return 0;
+			break;
+		default:
+			return 0;
+		}
+	}
+	C->I++;
+	*oper = *ops;
+	slang_alloc_free (ops);
+	return 1;
+}
+
+/* parameter qualifier */
+#define PARAM_QUALIFIER_IN 0
+#define PARAM_QUALIFIER_OUT 1
+#define PARAM_QUALIFIER_INOUT 2
+
+/* function parameter array presence */
+#define PARAMETER_ARRAY_NOT_PRESENT 0
+#define PARAMETER_ARRAY_PRESENT 1
+
+static int parse_parameter_declaration (slang_parse_ctx *C, slang_variable *param,
+	slang_struct_scope *structs, slang_variable_scope *scope, slang_function_scope *funcs)
+{
+	slang_storage_aggregate agg;
+	if (!parse_type_qualifier (C, &param->type.qualifier))
+		return 0;
+	switch (*C->I++)
+	{
+	case PARAM_QUALIFIER_IN:
+		if (param->type.qualifier != slang_qual_const && param->type.qualifier != slang_qual_none)
+		{
+			slang_info_log_error (C->L, "invalid type qualifier");
+			return 0;
+		}
+		break;
+	case PARAM_QUALIFIER_OUT:
+		if (param->type.qualifier == slang_qual_none)
+			param->type.qualifier = slang_qual_out;
+		else
+		{
+			slang_info_log_error (C->L, "invalid type qualifier");
+			return 0;
+		}
+		break;
+	case PARAM_QUALIFIER_INOUT:
+		if (param->type.qualifier == slang_qual_none)
+			param->type.qualifier = slang_qual_inout;
+		else
+		{
+			slang_info_log_error (C->L, "invalid type qualifier");
+			return 0;
+		}
+		break;
+	default:
+		return 0;
+	}
+	if (!parse_type_specifier (C, &param->type.specifier, structs, scope, funcs))
+		return 0;
+	if (!parse_identifier (C, &param->name))
+		return 0;
+	if (*C->I++ == PARAMETER_ARRAY_PRESENT)
+	{
+		param->array_size = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+		if (param->array_size == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!slang_operation_construct_a (param->array_size))
+		{
+			slang_alloc_free (param->array_size);
+			param->array_size = NULL;
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!parse_expression (C, param->array_size, scope, structs, funcs))
+			return 0;
+	}
+	slang_storage_aggregate_construct (&agg);
+	if (!_slang_aggregate_variable (&agg, &param->type.specifier, param->array_size, funcs,
+		structs))
+	{
+		slang_storage_aggregate_destruct (&agg);
+		return 0;
+	}
+	slang_storage_aggregate_destruct (&agg);
+	return 1;
+}
+
+/* function type */
+#define FUNCTION_ORDINARY 0
+#define FUNCTION_CONSTRUCTOR 1
+#define FUNCTION_OPERATOR 2
+
+/* function parameter */
+#define PARAMETER_NONE 0
+#define PARAMETER_NEXT 1
+
+/* operator type */
+#define OPERATOR_ASSIGN 1
+#define OPERATOR_ADDASSIGN 2
+#define OPERATOR_SUBASSIGN 3
+#define OPERATOR_MULASSIGN 4
+#define OPERATOR_DIVASSIGN 5
+/*#define OPERATOR_MODASSIGN 6*/
+/*#define OPERATOR_LSHASSIGN 7*/
+/*#define OPERATOR_RSHASSIGN 8*/
+/*#define OPERATOR_ANDASSIGN 9*/
+/*#define OPERATOR_XORASSIGN 10*/
+/*#define OPERATOR_ORASSIGN 11*/
+#define OPERATOR_LOGICALXOR 12
+/*#define OPERATOR_BITOR 13*/
+/*#define OPERATOR_BITXOR 14*/
+/*#define OPERATOR_BITAND 15*/
+#define OPERATOR_EQUAL 16
+#define OPERATOR_NOTEQUAL 17
+#define OPERATOR_LESS 18
+#define OPERATOR_GREATER 19
+#define OPERATOR_LESSEQUAL 20
+#define OPERATOR_GREATEREQUAL 21
+/*#define OPERATOR_LSHIFT 22*/
+/*#define OPERATOR_RSHIFT 23*/
+#define OPERATOR_MULTIPLY 24
+#define OPERATOR_DIVIDE 25
+/*#define OPERATOR_MODULUS 26*/
+#define OPERATOR_INCREMENT 27
+#define OPERATOR_DECREMENT 28
+#define OPERATOR_PLUS 29
+#define OPERATOR_MINUS 30
+/*#define OPERATOR_COMPLEMENT 31*/
+#define OPERATOR_NOT 32
+
+static const struct {
+	unsigned int o_code;
+	const char *o_name;
+} operator_names[] = {
+	{ OPERATOR_INCREMENT, "++" },
+	{ OPERATOR_ADDASSIGN, "+=" },
+	{ OPERATOR_PLUS, "+" },
+	{ OPERATOR_DECREMENT, "--" },
+	{ OPERATOR_SUBASSIGN, "-=" },
+	{ OPERATOR_MINUS, "-" },
+	{ OPERATOR_NOTEQUAL, "!=" },
+	{ OPERATOR_NOT, "!" },
+	{ OPERATOR_MULASSIGN, "*=" },
+	{ OPERATOR_MULTIPLY, "*" },
+	{ OPERATOR_DIVASSIGN, "/=" },
+	{ OPERATOR_DIVIDE, "/" },
+	{ OPERATOR_LESSEQUAL, "<=" },
+	/*{ OPERATOR_LSHASSIGN, "<<=" },*/
+	/*{ OPERATOR_LSHIFT, "<<" },*/
+	{ OPERATOR_LESS, "<" },
+	{ OPERATOR_GREATEREQUAL, ">=" },
+	/*{ OPERATOR_RSHASSIGN, ">>=" },*/
+	/*{ OPERATOR_RSHIFT, ">>" },*/
+	{ OPERATOR_GREATER, ">" },
+	{ OPERATOR_EQUAL, "==" },
+	{ OPERATOR_ASSIGN, "=" },
+	/*{ OPERATOR_MODASSIGN, "%=" },*/
+	/*{ OPERATOR_MODULUS, "%" },*/
+	/*{ OPERATOR_ANDASSIGN, "&=" },*/
+	/*{ OPERATOR_BITAND, "&" },*/
+	/*{ OPERATOR_ORASSIGN, "|=" },*/
+	/*{ OPERATOR_BITOR, "|" },*/
+	/*{ OPERATOR_COMPLEMENT, "~" },*/
+	/*{ OPERATOR_XORASSIGN, "^=" },*/
+	{ OPERATOR_LOGICALXOR, "^^" }/*,*/
+	/*{ OPERATOR_BITXOR, "^" }*/
+};
+
+static int parse_operator_name (slang_parse_ctx *C, char **pname)
+{
+	unsigned int i;
+	for (i = 0; i < sizeof (operator_names) / sizeof (*operator_names); i++)
+		if (operator_names[i].o_code == (unsigned int) (*C->I))
+		{
+			*pname = slang_string_duplicate (operator_names[i].o_name);
+			if (*pname == NULL)
+			{
+				slang_info_log_memory (C->L);
+				return 0;
+			}
+			C->I++;
+			return 1;
+		}
+	return 0;
+}
+
+static int parse_function_prototype (slang_parse_ctx *C, slang_function *func,
+	slang_struct_scope *structs, slang_variable_scope *scope, slang_function_scope *funcs)
+{
+	if (!parse_fully_specified_type (C, &func->header.type, structs, scope, funcs))
+		return 0;
+	switch (*C->I++)
+	{
+	case FUNCTION_ORDINARY:
+		func->kind = slang_func_ordinary;
+		if (!parse_identifier (C, &func->header.name))
+			return 0;
+		break;
+	case FUNCTION_CONSTRUCTOR:
+		func->kind = slang_func_constructor;
+		if (func->header.type.specifier.type == slang_spec_struct)
+			return 0;
+		func->header.name = slang_string_duplicate (
+			type_specifier_type_names[func->header.type.specifier.type]);
+		if (func->header.name == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		break;
+	case FUNCTION_OPERATOR:
+		func->kind = slang_func_operator;
+		if (!parse_operator_name (C, &func->header.name))
+			return 0;
+		break;
+	default:
+		return 0;
+	}
+	func->parameters->outer_scope = scope;
+	while (*C->I++ == PARAMETER_NEXT)
+	{
+		func->parameters->variables = (slang_variable *) slang_alloc_realloc (
+			func->parameters->variables,
+			func->parameters->num_variables * sizeof (slang_variable),
+			(func->parameters->num_variables + 1) * sizeof (slang_variable));
+		if (func->parameters->variables == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		slang_variable_construct (func->parameters->variables + func->parameters->num_variables);
+		func->parameters->num_variables++;
+		if (!parse_parameter_declaration (C, func->parameters->variables +
+			func->parameters->num_variables - 1, structs, scope, funcs))
+			return 0;
+	}
+	func->param_count = func->parameters->num_variables;
+	return 1;
+}
+
+static int parse_function_definition (slang_parse_ctx *C, slang_function *func,
+	slang_struct_scope *structs, slang_variable_scope *scope, slang_function_scope *funcs)
+{
+	if (!parse_function_prototype (C, func, structs, scope, funcs))
+		return 0;
+	func->body = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+	if (func->body == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	if (!slang_operation_construct_a (func->body))
+	{
+		slang_alloc_free (func->body);
+		func->body = NULL;
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	if (!parse_statement (C, func->body, func->parameters, structs, funcs))
+		return 0;
+	return 1;
+}
+
+/* init declarator list */
+#define DECLARATOR_NONE 0
+#define DECLARATOR_NEXT 1
+
+/* variable declaration */
+#define VARIABLE_NONE 0
+#define VARIABLE_IDENTIFIER 1
+#define VARIABLE_INITIALIZER 2
+#define VARIABLE_ARRAY_EXPLICIT 3
+#define VARIABLE_ARRAY_UNKNOWN 4
+
+static int parse_init_declarator (slang_parse_ctx *C, const slang_fully_specified_type *type,
+	slang_variable_scope *vars, slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	slang_variable *var;
+
+	if (*C->I++ == VARIABLE_NONE)
+		return 1;
+	vars->variables = (slang_variable *) slang_alloc_realloc (vars->variables,
+		vars->num_variables * sizeof (slang_variable),
+		(vars->num_variables + 1) * sizeof (slang_variable));
+	if (vars->variables == NULL)
+	{
+		slang_info_log_memory (C->L);
+		return 0;
+	}
+	var = vars->variables + vars->num_variables;
+	vars->num_variables++;
+	slang_variable_construct (var);
+	var->type.qualifier = type->qualifier;
+	if (!parse_identifier (C, &var->name))
+		return 0;
+	switch (*C->I++)
+	{
+	case VARIABLE_NONE:
+		if (!slang_type_specifier_copy (&var->type.specifier, &type->specifier))
+			return 0;
+		break;
+	case VARIABLE_INITIALIZER:
+		if (!slang_type_specifier_copy (&var->type.specifier, &type->specifier))
+			return 0;
+		var->initializer = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+		if (var->initializer == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!slang_operation_construct_a (var->initializer))
+		{
+			slang_alloc_free (var->initializer);
+			var->initializer = NULL;
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!parse_expression (C, var->initializer, vars, structs, funcs))
+			return 0;
+		break;
+	case VARIABLE_ARRAY_UNKNOWN:
+		var->type.specifier.type = slang_spec_array;
+		var->type.specifier._array = (slang_type_specifier *) slang_alloc_malloc (sizeof (
+			slang_type_specifier));
+		if (var->type.specifier._array == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		slang_type_specifier_construct (var->type.specifier._array);
+		if (!slang_type_specifier_copy (var->type.specifier._array, &type->specifier))
+			return 0;
+		break;
+	case VARIABLE_ARRAY_EXPLICIT:
+		var->type.specifier.type = slang_spec_array;
+		var->type.specifier._array = (slang_type_specifier *) slang_alloc_malloc (sizeof (
+			slang_type_specifier));
+		if (var->type.specifier._array == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		slang_type_specifier_construct (var->type.specifier._array);
+		if (!slang_type_specifier_copy (var->type.specifier._array, &type->specifier))
+			return 0;
+		var->array_size = (slang_operation *) slang_alloc_malloc (sizeof (slang_operation));
+		if (var->array_size == NULL)
+		{
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!slang_operation_construct_a (var->array_size))
+		{
+			slang_alloc_free (var->array_size);
+			var->array_size = NULL;
+			slang_info_log_memory (C->L);
+			return 0;
+		}
+		if (!parse_expression (C, var->array_size, vars, structs, funcs))
+			return 0;
+		break;
+	default:
+		return 0;
+	}
+	if (!(var->type.specifier.type == slang_spec_array && var->array_size == NULL))
+	{
+		slang_storage_aggregate agg;
+
+		slang_storage_aggregate_construct (&agg);
+		if (!_slang_aggregate_variable (&agg, &var->type.specifier, var->array_size, funcs,
+			structs))
+		{
+			slang_storage_aggregate_destruct (&agg);
+			return 0;
+		}
+		slang_storage_aggregate_destruct (&agg);
+	}
+	return 1;
+}
+
+static int parse_init_declarator_list (slang_parse_ctx *C, slang_variable_scope *vars,
+	slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	slang_fully_specified_type type;
+
+	slang_fully_specified_type_construct (&type);
+	if (!parse_fully_specified_type (C, &type, structs, vars, funcs))
+	{
+		slang_fully_specified_type_destruct (&type);
+		return 0;
+	}
+	do
+	{
+		if (!parse_init_declarator (C, &type, vars, structs, funcs))
+		{
+			slang_fully_specified_type_destruct (&type);
+			return 0;
+		}
+	}
+	while (*C->I++ == DECLARATOR_NEXT);
+	slang_fully_specified_type_destruct (&type);
+	return 1;
+}
+
+static int parse_function (slang_parse_ctx *C, int definition, slang_struct_scope *structs,
+	slang_function_scope *funcs, slang_variable_scope *scope, slang_function **parsed_func_ret)
+{
+	slang_function parsed_func, *found_func;
+
+	/* parse function definition/declaration */
+	slang_function_construct (&parsed_func);
+	if (definition)
+	{
+		if (!parse_function_definition (C, &parsed_func, structs, scope, funcs))
+		{
+			slang_function_destruct (&parsed_func);
+			return 0;
+		}
+	}
+	else
+	{
+		if (!parse_function_prototype (C, &parsed_func, structs, scope, funcs))
+		{
+			slang_function_destruct (&parsed_func);
+			return 0;
+		}
+	}
+
+	/* find a function with a prototype matching the parsed one - only the current scope
+	is being searched to allow built-in function overriding */
+	found_func = slang_function_scope_find (funcs, &parsed_func, 0);
+	if (found_func == NULL)
+	{
+		/* add the parsed function to the function list */
+		funcs->functions = (slang_function *) slang_alloc_realloc (funcs->functions,
+			funcs->num_functions * sizeof (slang_function), (funcs->num_functions + 1) * sizeof (
+			slang_function));
+		if (funcs->functions == NULL)
+		{
+			slang_info_log_memory (C->L);
+			slang_function_destruct (&parsed_func);
+			return 0;
+		}
+		funcs->functions[funcs->num_functions] = parsed_func;
+		funcs->num_functions++;
+
+		/* return the newly parsed function */
+		*parsed_func_ret = funcs->functions + funcs->num_functions - 1;
+	}
+	else
+	{
+		/* TODO: check function return type qualifiers and specifiers */
+		if (definition)
+		{
+			/* destroy the existing function declaration and replace it with the new one */
+			if (found_func->body != NULL)
+			{
+				slang_info_log_error (C->L, "%s: function already has a body",
+					parsed_func.header.name);
+				slang_function_destruct (&parsed_func);
+				return 0;
+			}
+			slang_function_destruct (found_func);
+			*found_func = parsed_func;
+		}
+		else
+		{
+			/* another declaration of the same function prototype - ignore it */
+			slang_function_destruct (&parsed_func);
+		}
+
+		/* return the found function */
+		*parsed_func_ret = found_func;
+	}
+
+	/* assemble the parsed function */
+	if (definition)
+	{
+static int x = 0;
+static
+		slang_assembly_file file;
+		slang_assembly_name_space space;
+x++;
+if (x == 1)
+		slang_assembly_file_construct (&file);
+		space.funcs = funcs;
+		space.structs = structs;
+		space.vars = scope;
+if (x == 1)
+xxx_first (&file);
+		(**parsed_func_ret).address = file.count;
+		if (!_slang_assemble_function (&file, *parsed_func_ret, &space))
+		{
+			slang_assembly_file_destruct (&file);
+			return 0;
+		}
+if (slang_string_compare ("main", (**parsed_func_ret).header.name) == 0)
+{
+xxx_prolog (&file, (**parsed_func_ret).address);
+_slang_execute (&file);
+slang_assembly_file_destruct (&file);
+exit (0);
+}
+	}
+	return 1;
+}
+
+/* declaration */
+#define DECLARATION_FUNCTION_PROTOTYPE 1
+#define DECLARATION_INIT_DECLARATOR_LIST 2
+
+static int parse_declaration (slang_parse_ctx *C, slang_variable_scope *scope,
+	slang_struct_scope *structs, slang_function_scope *funcs)
+{
+	slang_function *dummy_func;
+
+	switch (*C->I++)
+	{
+	case DECLARATION_INIT_DECLARATOR_LIST:
+		if (!parse_init_declarator_list (C, scope, structs, funcs))
+			return 0;
+		break;
+	case DECLARATION_FUNCTION_PROTOTYPE:
+		if (!parse_function (C, 0, structs, funcs, scope, &dummy_func))
+			return 0;
+		break;
+	default:
+		return 0;
+	}
+	return 1;
+}
+
+/* external declaration */
+#define EXTERNAL_NULL 0
+#define EXTERNAL_FUNCTION_DEFINITION 1
+#define EXTERNAL_DECLARATION 2
+
+static int parse_translation_unit (slang_parse_ctx *C, slang_translation_unit *unit)
+{
+	while (*C->I != EXTERNAL_NULL)
+	{
+		slang_function *func;
+
+		switch (*C->I++)
+		{
+		case EXTERNAL_FUNCTION_DEFINITION:
+			if (!parse_function (C, 1, &unit->structs, &unit->functions, &unit->globals, &func))
+				return 0;
+			break;
+		case EXTERNAL_DECLARATION:
+			if (!parse_declaration (C, &unit->globals, &unit->structs, &unit->functions))
+				return 0;
+			break;
+		default:
+			return 0;
+		}
+	}
+	C->I++;
+	return 1;
+}
+
+static int compile_binary (const byte *prod, slang_translation_unit *unit, slang_unit_type type,
+	slang_info_log *log, slang_translation_unit *builtins)
+{
+	slang_parse_ctx C;
+
+	/* set-up parse context */
+	C.I = prod;
+	C.L = log;
+	C.parsing_builtin = builtins == NULL;
+
+	if (!check_revision (&C))
+		return 0;
+
+	/* create translation unit object */
+	slang_translation_unit_construct (unit);
+	unit->type = type;
+
+	if (builtins != NULL)
+	{
+		/* link to built-in functions */
+		builtins[1].functions.outer_scope = &builtins[0].functions;
+		builtins[2].functions.outer_scope = &builtins[1].functions;
+		unit->functions.outer_scope = &builtins[2].functions;
+
+		/* link to built-in variables - core unit does not define any */
+		builtins[2].globals.outer_scope = &builtins[1].globals;
+		unit->globals.outer_scope = &builtins[2].globals;
+
+		/* link to built-in structure typedefs - only in common unit */
+		unit->structs.outer_scope = &builtins[1].structs;
+	}
+
+	/* parse translation unit */
+	if (!parse_translation_unit (&C, unit))
+	{
+		slang_translation_unit_destruct (unit);
+		return 0;
+	}
+
+	return 1;
+}
+
+static int compile_with_grammar (grammar id, const char *source, slang_translation_unit *unit,
+	slang_unit_type type, slang_info_log *log, slang_translation_unit *builtins)
+{
+	byte *prod;
+	unsigned int size, start, version;
+
+	/* retrieve version */
+	if (!_slang_preprocess_version (source, &version, &start, log))
+		return 0;
+
+	/* check the syntax */
+	if (!grammar_fast_check (id, (const byte *) source + start, &prod, &size, 65536))
+	{
+		char buf[1024];
+		unsigned int pos;
+		grammar_get_last_error ( (unsigned char*) buf, 1024, (int*) &pos);
+		slang_info_log_error (log, buf);
+		return 0;
+	}
+
+	if (!compile_binary (prod, unit, type, log, builtins))
+	{
+		grammar_alloc_free (prod);
+		return 0;
+	}
+
+	grammar_alloc_free (prod);
+	return 1;
+}
+
+static const char *slang_shader_syn =
+#include "library/slang_shader_syn.h"
+;
+/*
+static const byte slang_core_gc_bin[] = {
+#include "library/slang_core_gc_bin.h"
+};*/
+static const byte slang_core_gc[] = {
+#include "library/slang_core_gc.h"
+};
+
+static const byte slang_common_builtin_gc_bin[] = {
+#include "library/slang_common_builtin_gc_bin.h"
+};
+
+static const byte slang_fragment_builtin_gc_bin[] = {
+#include "library/slang_fragment_builtin_gc_bin.h"
+};
+
+static const byte slang_vertex_builtin_gc_bin[] = {
+#include "library/slang_vertex_builtin_gc_bin.h"
+};
+
+int _slang_compile (const char *source, slang_translation_unit *unit, slang_unit_type type,
+	slang_info_log *log)
+{
+	grammar id;
+	slang_translation_unit builtin_units[3];
+	slang_translation_unit *builtins = NULL;
+
+	/* load slang grammar */
+	id = grammar_load_from_text ((const byte *) slang_shader_syn);
+	if (id == 0)
+	{
+		char buf[1024];
+		unsigned int pos;
+		grammar_get_last_error ( (unsigned char*) buf, 1024, (int*) &pos);
+		slang_info_log_error (log, buf);
+		return 0;
+	}
+
+	/* set shader type - the syntax is slightly different for different shaders */
+	if (type == slang_unit_fragment_shader || type == slang_unit_fragment_builtin)
+		grammar_set_reg8 (id, (const byte *) "shader_type", 1);
+	else
+		grammar_set_reg8 (id, (const byte *) "shader_type", 2);
+
+	/* enable language extensions */
+	grammar_set_reg8 (id, (const byte *) "parsing_builtin", 1);
+
+	/* if parsing user-specified shader, load built-in library */
+	if (type == slang_unit_fragment_shader || type == slang_unit_vertex_shader)
+	{
+		/*if (!compile_binary (slang_core_gc_bin, builtin_units,
+			slang_unit_fragment_builtin, log, NULL))*/
+		if (!compile_with_grammar (id, (const char*) slang_core_gc, builtin_units, slang_unit_fragment_builtin,
+			log, NULL))
+		{
+			grammar_destroy (id);
+			return 0;
+		}
+		if (!compile_binary (slang_common_builtin_gc_bin, builtin_units + 1,
+			slang_unit_fragment_builtin, log, NULL))
+		{
+			slang_translation_unit_destruct (builtin_units);
+			grammar_destroy (id);
+			return 0;
+		}
+		if (type == slang_unit_fragment_shader)
+		{
+			if (!compile_binary (slang_fragment_builtin_gc_bin, builtin_units + 2,
+				slang_unit_fragment_builtin, log, NULL))
+			{
+				slang_translation_unit_destruct (builtin_units);
+				slang_translation_unit_destruct (builtin_units + 1);
+				grammar_destroy (id);
+				return 0;
+			}
+		}
+		else if (type == slang_unit_vertex_shader)
+		{
+			if (!compile_binary (slang_vertex_builtin_gc_bin, builtin_units + 2,
+				slang_unit_vertex_builtin, log, NULL))
+			{
+				slang_translation_unit_destruct (builtin_units);
+				slang_translation_unit_destruct (builtin_units + 1);
+				grammar_destroy (id);
+				return 0;
+			}
+		}
+
+		/* disable language extensions */
+		grammar_set_reg8 (id, (const byte *) "parsing_builtin", 0);
+		builtins = builtin_units;
+	}
+
+	/* compile the actual shader - pass-in built-in library for external shader */
+	if (!compile_with_grammar (id, source, unit, type, log, builtins))
+	{
+		if (type == slang_unit_fragment_shader || type == slang_unit_vertex_shader)
+		{
+			slang_translation_unit_destruct (builtin_units);
+			slang_translation_unit_destruct (builtin_units + 1);
+			slang_translation_unit_destruct (builtin_units + 2);
+		}
+		grammar_destroy (id);
+		return 0;
+	}
+
+	/* destroy built-in library */
+	if (type == slang_unit_fragment_shader || type == slang_unit_vertex_shader)
+	{
+		slang_translation_unit_destruct (builtin_units);
+		slang_translation_unit_destruct (builtin_units + 1);
+		slang_translation_unit_destruct (builtin_units + 2);
+	}
+	grammar_destroy (id);
+	return 1;
+}
+