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/*
* 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_assemble_typeinfo.c
* slang type info
* \author Michal Krol
*/
#include "imports.h"
#include "slang_utility.h"
#include "slang_assemble_typeinfo.h"
/* slang_assembly_typeinfo */
void slang_assembly_typeinfo_construct (slang_assembly_typeinfo *ti)
{
slang_type_specifier_construct (&ti->spec);
}
void slang_assembly_typeinfo_destruct (slang_assembly_typeinfo *ti)
{
slang_type_specifier_destruct (&ti->spec);
}
/* _slang_typeof_operation() */
int _slang_typeof_operation (slang_operation *op, slang_assembly_name_space *space,
slang_assembly_typeinfo *ti)
{
ti->can_be_referenced = 0;
ti->is_swizzled = 0;
switch (op->type)
{
case slang_oper_block_no_new_scope:
case slang_oper_block_new_scope:
case slang_oper_variable_decl:
case slang_oper_asm:
case slang_oper_break:
case slang_oper_continue:
case slang_oper_discard:
case slang_oper_return:
case slang_oper_if:
case slang_oper_while:
case slang_oper_do:
case slang_oper_for:
case slang_oper_void:
ti->spec.type = slang_spec_void;
break;
case slang_oper_expression:
case slang_oper_assign:
case slang_oper_addassign:
case slang_oper_subassign:
case slang_oper_mulassign:
case slang_oper_divassign:
case slang_oper_preincrement:
case slang_oper_predecrement:
if (!_slang_typeof_operation (op->children, space, ti))
return 0;
break;
case slang_oper_literal_bool:
case slang_oper_logicalor:
case slang_oper_logicalxor:
case slang_oper_logicaland:
case slang_oper_equal:
case slang_oper_notequal:
case slang_oper_less:
case slang_oper_greater:
case slang_oper_lessequal:
case slang_oper_greaterequal:
case slang_oper_not:
ti->spec.type = slang_spec_bool;
break;
case slang_oper_literal_int:
ti->spec.type = slang_spec_int;
break;
case slang_oper_literal_float:
ti->spec.type = slang_spec_float;
break;
case slang_oper_identifier:
{
slang_variable *var;
var = _slang_locate_variable (op->locals, op->identifier, 1);
if (var == NULL)
return 0;
if (!slang_type_specifier_copy (&ti->spec, &var->type.specifier))
return 0;
ti->can_be_referenced = 1;
}
break;
case slang_oper_sequence:
/* TODO: check [0] and [1] if they match */
if (!_slang_typeof_operation (op->children + 1, space, ti))
return 0;
ti->can_be_referenced = 0;
ti->is_swizzled = 0;
break;
/*case slang_oper_modassign:*/
/*case slang_oper_lshassign:*/
/*case slang_oper_rshassign:*/
/*case slang_oper_orassign:*/
/*case slang_oper_xorassign:*/
/*case slang_oper_andassign:*/
case slang_oper_select:
/* TODO: check [1] and [2] if they match */
if (!_slang_typeof_operation (op->children + 1, space, ti))
return 0;
ti->can_be_referenced = 0;
ti->is_swizzled = 0;
break;
/*case slang_oper_bitor:*/
/*case slang_oper_bitxor:*/
/*case slang_oper_bitand:*/
/*case slang_oper_lshift:*/
/*case slang_oper_rshift:*/
case slang_oper_add:
{
int exists;
if (!_slang_typeof_function ("+", op->children, 2, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
case slang_oper_subtract:
{
int exists;
if (!_slang_typeof_function ("-", op->children, 2, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
case slang_oper_multiply:
{
int exists;
if (!_slang_typeof_function ("*", op->children, 2, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
case slang_oper_divide:
{
int exists;
if (!_slang_typeof_function ("/", op->children, 2, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
/*case slang_oper_modulus:*/
case slang_oper_plus:
{
int exists;
if (!_slang_typeof_function ("+", op->children, 1, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
case slang_oper_minus:
{
int exists;
if (!_slang_typeof_function ("-", op->children, 1, space, &ti->spec, &exists))
return 0;
if (!exists)
return 0;
}
break;
/*case slang_oper_complement:*/
case slang_oper_subscript:
{
slang_assembly_typeinfo _ti;
slang_assembly_typeinfo_construct (&_ti);
if (!_slang_typeof_operation (op->children, space, &_ti))
{
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
ti->can_be_referenced = _ti.can_be_referenced;
switch (_ti.spec.type)
{
case slang_spec_bvec2:
case slang_spec_bvec3:
case slang_spec_bvec4:
ti->spec.type = slang_spec_bool;
break;
case slang_spec_ivec2:
case slang_spec_ivec3:
case slang_spec_ivec4:
ti->spec.type = slang_spec_int;
break;
case slang_spec_vec2:
case slang_spec_vec3:
case slang_spec_vec4:
ti->spec.type = slang_spec_float;
break;
case slang_spec_mat2:
ti->spec.type = slang_spec_vec2;
break;
case slang_spec_mat3:
ti->spec.type = slang_spec_vec3;
break;
case slang_spec_mat4:
ti->spec.type = slang_spec_vec4;
break;
case slang_spec_array:
if (!slang_type_specifier_copy (&ti->spec, _ti.spec._array))
{
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
break;
default:
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
slang_assembly_typeinfo_destruct (&_ti);
}
break;
case slang_oper_call:
{
int exists;
if (!_slang_typeof_function (op->identifier, op->children, op->num_children, space,
&ti->spec, &exists))
return 0;
if (!exists)
{
slang_struct *s = slang_struct_scope_find (space->structs, op->identifier, 1);
if (s != NULL)
{
ti->spec.type = slang_spec_struct;
ti->spec._struct = (slang_struct *) slang_alloc_malloc (sizeof (slang_struct));
if (ti->spec._struct == NULL)
return 0;
if (!slang_struct_construct_a (ti->spec._struct))
{
slang_alloc_free (ti->spec._struct);
ti->spec._struct = NULL;
return 0;
}
if (!slang_struct_copy (ti->spec._struct, s))
return 0;
}
else
{
slang_type_specifier_type type = slang_type_specifier_type_from_string (
op->identifier);
if (type == slang_spec_void)
return 0;
ti->spec.type = type;
}
}
}
break;
case slang_oper_field:
{
slang_assembly_typeinfo _ti;
slang_assembly_typeinfo_construct (&_ti);
if (!_slang_typeof_operation (op->children, space, &_ti))
{
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
if (_ti.spec.type == slang_spec_struct)
{
slang_variable *field = _slang_locate_variable (_ti.spec._struct->fields,
op->identifier, 0);
if (field == NULL)
{
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
if (!slang_type_specifier_copy (&ti->spec, &field->type.specifier))
{
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
}
else
{
unsigned int rows;
switch (_ti.spec.type)
{
case slang_spec_vec2:
case slang_spec_ivec2:
case slang_spec_bvec2:
rows = 2;
break;
case slang_spec_vec3:
case slang_spec_ivec3:
case slang_spec_bvec3:
rows = 3;
break;
case slang_spec_vec4:
case slang_spec_ivec4:
case slang_spec_bvec4:
rows = 4;
break;
default:
slang_assembly_typeinfo_destruct (&_ti);
return 0;
}
if (!_slang_is_swizzle (op->identifier, rows, &ti->swz))
return 0;
ti->is_swizzled = 1;
ti->can_be_referenced = _ti.can_be_referenced && _slang_is_swizzle_mask (&ti->swz,
rows);
if (_ti.is_swizzled)
{
slang_swizzle swz;
_slang_multiply_swizzles (&swz, &_ti.swz, &ti->swz);
ti->swz = swz;
}
switch (_ti.spec.type)
{
case slang_spec_vec2:
case slang_spec_vec3:
case slang_spec_vec4:
switch (ti->swz.num_components)
{
case 1:
ti->spec.type = slang_spec_float;
break;
case 2:
ti->spec.type = slang_spec_vec2;
break;
case 3:
ti->spec.type = slang_spec_vec3;
break;
case 4:
ti->spec.type = slang_spec_vec4;
break;
}
break;
case slang_spec_ivec2:
case slang_spec_ivec3:
case slang_spec_ivec4:
switch (ti->swz.num_components)
{
case 1:
ti->spec.type = slang_spec_int;
break;
case 2:
ti->spec.type = slang_spec_ivec2;
break;
case 3:
ti->spec.type = slang_spec_ivec3;
break;
case 4:
ti->spec.type = slang_spec_ivec4;
break;
}
break;
case slang_spec_bvec2:
case slang_spec_bvec3:
case slang_spec_bvec4:
switch (ti->swz.num_components)
{
case 1:
ti->spec.type = slang_spec_bool;
break;
case 2:
ti->spec.type = slang_spec_bvec2;
break;
case 3:
ti->spec.type = slang_spec_bvec3;
break;
case 4:
ti->spec.type = slang_spec_bvec4;
break;
}
break;
default:
break;
}
}
slang_assembly_typeinfo_destruct (&_ti);
return 1;
}
break;
case slang_oper_postincrement:
case slang_oper_postdecrement:
if (!_slang_typeof_operation (op->children, space, ti))
return 0;
ti->can_be_referenced = 0;
ti->is_swizzled = 0;
break;
default:
return 0;
}
return 1;
}
/* _slang_typeof_function() */
int _slang_typeof_function (const char *name, slang_operation *params, unsigned int num_params,
slang_assembly_name_space *space, slang_type_specifier *spec, int *exists)
{
slang_function *fun = _slang_locate_function (name, params, num_params, space);
*exists = fun != NULL;
if (fun == NULL)
return 1;
return slang_type_specifier_copy (spec, &fun->header.type.specifier);
}
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