From f1c5043f94261fecd8a6e54fe37d786554affcdd Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 10 Jun 2010 22:48:16 -0600 Subject: mesa: move shader/slang/* sources to main/slang/* Reduce the source tree depth a bit. --- src/mesa/slang/slang_compile_function.c | 262 ++++++++++++++++++++++++++++++++ 1 file changed, 262 insertions(+) create mode 100644 src/mesa/slang/slang_compile_function.c (limited to 'src/mesa/slang/slang_compile_function.c') diff --git a/src/mesa/slang/slang_compile_function.c b/src/mesa/slang/slang_compile_function.c new file mode 100644 index 0000000000..4dd885176d --- /dev/null +++ b/src/mesa/slang/slang_compile_function.c @@ -0,0 +1,262 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 2005-2006 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_function.c + * slang front-end compiler + * \author Michal Krol + */ + +#include "main/imports.h" +#include "slang_compile.h" +#include "slang_mem.h" + + +int +slang_function_construct(slang_function * func) +{ + func->kind = SLANG_FUNC_ORDINARY; + if (!slang_variable_construct(&func->header)) + return 0; + + func->parameters = (slang_variable_scope *) + _slang_alloc(sizeof(slang_variable_scope)); + if (func->parameters == NULL) { + slang_variable_destruct(&func->header); + return 0; + } + + _slang_variable_scope_ctr(func->parameters); + func->param_count = 0; + func->body = NULL; + return 1; +} + +void +slang_function_destruct(slang_function * func) +{ + slang_variable_destruct(&func->header); + slang_variable_scope_destruct(func->parameters); + _slang_free(func->parameters); + if (func->body != NULL) { + slang_operation_destruct(func->body); + _slang_free(func->body); + } +} + + +slang_function * +slang_function_new(slang_function_kind kind) +{ + slang_function *fun = (slang_function *) + _slang_alloc(sizeof(slang_function)); + if (fun) { + slang_function_construct(fun); + fun->kind = kind; + } + return fun; +} + + +/* + * slang_function_scope + */ + +GLvoid +_slang_function_scope_ctr(slang_function_scope * self) +{ + self->functions = NULL; + self->num_functions = 0; + self->outer_scope = NULL; +} + +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_free(scope->functions); +} + + +/** + * Does this function have a non-void return value? + */ +GLboolean +_slang_function_has_return_value(const slang_function *fun) +{ + return fun->header.type.specifier.type != SLANG_SPEC_VOID; +} + + +/** + * Search a list of functions for a particular function by name. + * \param funcs the list of functions to search + * \param a_name the name to search for + * \param all_scopes if non-zero, search containing scopes too. + * \return pointer to found function, or NULL. + */ +int +slang_function_scope_find_by_name(slang_function_scope * funcs, + slang_atom a_name, int all_scopes) +{ + unsigned int i; + + for (i = 0; i < funcs->num_functions; i++) + if (a_name == funcs->functions[i].header.a_name) + return 1; + if (all_scopes && funcs->outer_scope != NULL) + return slang_function_scope_find_by_name(funcs->outer_scope, a_name, 1); + return 0; +} + + +/** + * Search a list of functions for a particular function (for implementing + * function calls. Matching is done by first comparing the function's name, + * then the function's parameter list. + * + * \param funcs the list of functions to search + * \param fun the function to search for + * \param all_scopes if non-zero, search containing scopes too. + * \return pointer to found function, or NULL. + */ +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]; + const GLuint haveRetValue = 0; +#if 0 + = (f->header.type.specifier.type != SLANG_SPEC_VOID); +#endif + unsigned int j; + + /* + printf("Compare name %s to %s (ret %u, %d, %d)\n", + (char *) fun->header.a_name, (char *) f->header.a_name, + haveRetValue, + fun->param_count, f->param_count); + */ + + if (fun->header.a_name != f->header.a_name) + continue; + if (fun->param_count != f->param_count) + continue; + for (j = haveRetValue; 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) { + /* + printf("Found match\n"); + */ + return f; + } + } + /* + printf("Not found\n"); + */ + if (all_scopes && funcs->outer_scope != NULL) + return slang_function_scope_find(funcs->outer_scope, fun, 1); + return NULL; +} + + +/** + * Lookup a function according to name and parameter count/types. + */ +slang_function * +_slang_function_locate(const slang_function_scope * funcs, slang_atom a_name, + slang_operation * args, GLuint num_args, + const slang_name_space * space, slang_atom_pool * atoms, + slang_info_log *log, GLboolean *error) +{ + slang_typeinfo arg_ti[100]; + GLuint i; + + *error = GL_FALSE; + + /* determine type of each argument */ + assert(num_args < 100); + for (i = 0; i < num_args; i++) { + if (!slang_typeinfo_construct(&arg_ti[i])) + return NULL; + if (!_slang_typeof_operation(&args[i], space, &arg_ti[i], atoms, log)) { + return NULL; + } + } + + /* loop over function scopes */ + while (funcs) { + + /* look for function with matching name and argument/param types */ + for (i = 0; i < funcs->num_functions; i++) { + slang_function *f = &funcs->functions[i]; + const GLuint haveRetValue = _slang_function_has_return_value(f); + GLuint j; + + if (a_name != f->header.a_name) + continue; + if (f->param_count - haveRetValue != num_args) + continue; + + /* compare parameter / argument types */ + for (j = 0; j < num_args; j++) { + if (!slang_type_specifier_compatible(&arg_ti[j].spec, + &f->parameters->variables[j]->type.specifier)) { + /* param/arg types don't match */ + break; + } + + /* "out" and "inout" formal parameter requires the actual + * argument to be an l-value. + */ + if (!arg_ti[j].can_be_referenced && + (f->parameters->variables[j]->type.qualifier == SLANG_QUAL_OUT || + f->parameters->variables[j]->type.qualifier == SLANG_QUAL_INOUT)) { + /* param is not an lvalue! */ + *error = GL_TRUE; + return NULL; + } + } + + if (j == num_args) { + /* name and args match! */ + return f; + } + } + + funcs = funcs->outer_scope; + } + + return NULL; +} -- cgit v1.2.3