0,0 → 1,125 |
/* |
* Copyright © 2010 Intel Corporation |
* |
* 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 (including the next |
* paragraph) 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 |
* THE AUTHORS OR COPYRIGHT HOLDERS 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 ir_import_prototypes.cpp |
* Import function prototypes from one IR tree into another. |
* |
* \author Ian Romanick |
*/ |
#include "ir.h" |
#include "glsl_symbol_table.h" |
|
namespace { |
|
/** |
* Visitor used to import function prototypes |
* |
* Normally the \c clone method of either \c ir_function or |
* \c ir_function_signature could be used. However, we don't want a complete |
* clone of the \c ir_function_signature. We want everything \b except the |
* body of the function. |
*/ |
class import_prototype_visitor : public ir_hierarchical_visitor { |
public: |
/** |
*/ |
import_prototype_visitor(exec_list *list, glsl_symbol_table *symbols, |
void *mem_ctx) |
{ |
this->mem_ctx = mem_ctx; |
this->list = list; |
this->symbols = symbols; |
this->function = NULL; |
} |
|
virtual ir_visitor_status visit_enter(ir_function *ir) |
{ |
assert(this->function == NULL); |
|
this->function = this->symbols->get_function(ir->name); |
if (!this->function) { |
this->function = new(this->mem_ctx) ir_function(ir->name); |
|
list->push_tail(this->function); |
|
/* Add the new function to the symbol table. |
*/ |
this->symbols->add_function(this->function); |
} |
return visit_continue; |
} |
|
virtual ir_visitor_status visit_leave(ir_function *ir) |
{ |
(void) ir; |
assert(this->function != NULL); |
|
this->function = NULL; |
return visit_continue; |
} |
|
ir_visitor_status visit_enter(ir_function_signature *ir) |
{ |
assert(this->function != NULL); |
|
ir_function_signature *copy = ir->clone_prototype(mem_ctx, NULL); |
|
this->function->add_signature(copy); |
|
/* Do not process child nodes of the ir_function_signature. There can |
* never be any nodes inside the ir_function_signature that we care |
* about. Instead continue with the next sibling. |
*/ |
return visit_continue_with_parent; |
} |
|
private: |
exec_list *list; |
ir_function *function; |
glsl_symbol_table *symbols; |
void *mem_ctx; |
}; |
|
} /* anonymous namespace */ |
|
/** |
* Import function prototypes from one IR tree into another |
* |
* \param source Source instruction stream containing functions whose |
* prototypes are to be imported |
* \param dest Destination instruction stream where new \c ir_function and |
* \c ir_function_signature nodes will be stored |
* \param symbols Symbol table where new functions will be stored |
* \param mem_ctx ralloc memory context used for new allocations |
*/ |
void |
import_prototypes(const exec_list *source, exec_list *dest, |
glsl_symbol_table *symbols, void *mem_ctx) |
{ |
import_prototype_visitor v(dest, symbols, mem_ctx); |
|
/* Making source be const is just extra documentation. |
*/ |
v.run(const_cast<exec_list *>(source)); |
} |