src/mesa/shader/slang/slang_compile_operation.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.2
   4  *
   5  * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file slang_compile_operation.c
  27  * slang front-end compiler
  28  * \author Michal Krol
  29  */
  30
  31 #include "imports.h"
  32 #include "slang_compile.h"
  33 #include "slang_mem.h"
  34
  35
  36 /**
  37  * Init a slang_operation object
  38  */
  39 GLboolean
  40 slang_operation_construct(slang_operation * oper)
  41 {
  42    oper->type = SLANG_OPER_NONE;
  43    oper->children = NULL;
  44    oper->num_children = 0;
  45    oper->literal[0] = 0.0;
  46    oper->literal_size = 1;
  47    oper->a_id = SLANG_ATOM_NULL;
  48    oper->locals = _slang_variable_scope_new(NULL);
  49    if (oper->locals == NULL)
  50       return GL_FALSE;
  51    _slang_variable_scope_ctr(oper->locals);
  52    oper->fun = NULL;
  53    oper->var = NULL;
  54    return GL_TRUE;
  55 }
  56
  57 void
  58 slang_operation_destruct(slang_operation * oper)
  59 {
  60    GLuint i;
  61
  62    for (i = 0; i < oper->num_children; i++)
  63       slang_operation_destruct(oper->children + i);
  64    _slang_free(oper->children);
  65    slang_variable_scope_destruct(oper->locals);
  66    _slang_free(oper->locals);
  67    oper->children = NULL;
  68    oper->num_children = 0;
  69    oper->locals = NULL;
  70 }
  71
  72 /**
  73  * Recursively copy a slang_operation node.
  74  * \return GL_TRUE for success, GL_FALSE if failure
  75  */
  76 GLboolean
  77 slang_operation_copy(slang_operation * x, const slang_operation * y)
  78 {
  79    slang_operation z;
  80    GLuint i;
  81
  82    if (!slang_operation_construct(&z))
  83       return GL_FALSE;
  84    z.type = y->type;
  85    z.children = (slang_operation *)
  86       _slang_alloc(y->num_children * sizeof(slang_operation));
  87    if (z.children == NULL) {
  88       slang_operation_destruct(&z);
  89       return GL_FALSE;
  90    }
  91    for (z.num_children = 0; z.num_children < y->num_children;
  92         z.num_children++) {
  93       if (!slang_operation_construct(&z.children[z.num_children])) {
  94          slang_operation_destruct(&z);
  95          return GL_FALSE;
  96       }
  97    }
  98    for (i = 0; i < z.num_children; i++) {
  99       if (!slang_operation_copy(&z.children[i], &y->children[i])) {
 100          slang_operation_destruct(&z);
 101          return GL_FALSE;
 102       }
 103    }
 104    z.literal[0] = y->literal[0];
 105    z.literal[1] = y->literal[1];
 106    z.literal[2] = y->literal[2];
 107    z.literal[3] = y->literal[3];
 108    z.literal_size = y->literal_size;
 109    assert(y->literal_size >= 1);
 110    assert(y->literal_size <= 4);
 111    z.a_id = y->a_id;
 112    if (y->locals) {
 113       if (!slang_variable_scope_copy(z.locals, y->locals)) {
 114          slang_operation_destruct(&z);
 115          return GL_FALSE;
 116       }
 117    }
 118 #if 0
 119    z.var = y->var;
 120    z.fun = y->fun;
 121 #endif
 122    slang_operation_destruct(x);
 123    *x = z;
 124    return GL_TRUE;
 125 }
 126
 127
 128 slang_operation *
 129 slang_operation_new(GLuint count)
 130 {
 131    slang_operation *ops
 132        = (slang_operation *) _slang_alloc(count * sizeof(slang_operation));
 133    assert(count > 0);
 134    if (ops) {
 135       GLuint i;
 136       for (i = 0; i < count; i++)
 137          slang_operation_construct(ops + i);
 138    }
 139    return ops;
 140 }
 141
 142
 143 /**
 144  * Delete operation and all children
 145  */
 146 void
 147 slang_operation_delete(slang_operation *oper)
 148 {
 149    slang_operation_destruct(oper);
 150    _slang_free(oper);
 151 }
 152
 153
 154 slang_operation *
 155 slang_operation_grow(GLuint *numChildren, slang_operation **children)
 156 {
 157    slang_operation *ops;
 158
 159    ops = (slang_operation *)
 160       _slang_realloc(*children,
 161                      *numChildren * sizeof(slang_operation),
 162                      (*numChildren + 1) * sizeof(slang_operation));
 163    if (ops) {
 164       slang_operation *newOp = ops + *numChildren;
 165       if (!slang_operation_construct(newOp)) {
 166          _slang_free(ops);
 167          *children = NULL;
 168          return NULL;
 169       }
 170       *children = ops;
 171       (*numChildren)++;
 172       return newOp;
 173    }
 174    return NULL;
 175 }
 176
 177 /**
 178  * Insert a new slang_operation into an array.
 179  * \param numElements  pointer to current array size (in/out)
 180  * \param array  address of the array (in/out)
 181  * \param pos  position to insert new element
 182  * \return  pointer to the new operation/element
 183  */
 184 slang_operation *
 185 slang_operation_insert(GLuint *numElements, slang_operation **array,
 186                        GLuint pos)
 187 {
 188    slang_operation *ops;
 189
 190    assert(pos <= *numElements);
 191
 192    ops = (slang_operation *)
 193       _slang_alloc((*numElements + 1) * sizeof(slang_operation));
 194    if (ops) {
 195       slang_operation *newOp;
 196       newOp = ops + pos;
 197       if (pos > 0)
 198          _mesa_memcpy(ops, *array, pos * sizeof(slang_operation));
 199       if (pos < *numElements)
 200          _mesa_memcpy(newOp + 1, (*array) + pos,
 201                       (*numElements - pos) * sizeof(slang_operation));
 202
 203       if (!slang_operation_construct(newOp)) {
 204          _slang_free(ops);
 205          *numElements = 0;
 206          *array = NULL;
 207          return NULL;
 208       }
 209       if (*array)
 210          _slang_free(*array);
 211       *array = ops;
 212       (*numElements)++;
 213       return newOp;
 214    }
 215    return NULL;
 216 }
 217
 218
 219 void
 220 _slang_operation_swap(slang_operation *oper0, slang_operation *oper1)
 221 {
 222    slang_operation tmp = *oper0;
 223    *oper0 = *oper1;
 224    *oper1 = tmp;
 225 }
 226
 227