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
  34
  35 /**
  36  * Init a slang_operation object
  37  */
  38 GLboolean
  39 slang_operation_construct(slang_operation * oper)
  40 {
  41    oper->type = slang_oper_none;
  42    oper->children = NULL;
  43    oper->num_children = 0;
  44    oper->literal[0] = 0.0;
  45    oper->a_id = SLANG_ATOM_NULL;
  46    oper->locals = _slang_variable_scope_new(NULL);
  47    if (oper->locals == NULL)
  48       return GL_FALSE;
  49    _slang_variable_scope_ctr(oper->locals);
  50    oper->fun = NULL;
  51    oper->var = NULL;
  52    return GL_TRUE;
  53 }
  54
  55 void
  56 slang_operation_destruct(slang_operation * oper)
  57 {
  58    GLuint i;
  59
  60    for (i = 0; i < oper->num_children; i++)
  61       slang_operation_destruct(oper->children + i);
  62    slang_alloc_free(oper->children);
  63 #ifdef FREE_MEMORY
  64    /* XXX revisit and fix memory coruption here ! */
  65    slang_variable_scope_destruct(oper->locals);
  66    slang_alloc_free(oper->locals);
  67 #endif
  68    oper->children = NULL;
  69    oper->num_children = 0;
  70    oper->locals = NULL;
  71 }
  72
  73 /**
  74  * Recursively copy a slang_operation node.
  75  * \return GL_TRUE for success, GL_FALSE if failure
  76  */
  77 GLboolean
  78 slang_operation_copy(slang_operation * x, const slang_operation * y)
  79 {
  80    slang_operation z;
  81    GLuint i;
  82
  83    if (!slang_operation_construct(&z))
  84       return GL_FALSE;
  85    z.type = y->type;
  86    z.children = (slang_operation *)
  87       slang_alloc_malloc(y->num_children * sizeof(slang_operation));
  88    if (z.children == NULL) {
  89       slang_operation_destruct(&z);
  90       return GL_FALSE;
  91    }
  92    for (z.num_children = 0; z.num_children < y->num_children;
  93         z.num_children++) {
  94       if (!slang_operation_construct(&z.children[z.num_children])) {
  95          slang_operation_destruct(&z);
  96          return GL_FALSE;
  97       }
  98    }
  99    for (i = 0; i < z.num_children; i++) {
 100       if (!slang_operation_copy(&z.children[i], &y->children[i])) {
 101          slang_operation_destruct(&z);
 102          return GL_FALSE;
 103       }
 104    }
 105    z.literal[0] = y->literal[0];
 106    z.literal[1] = y->literal[1];
 107    z.literal[2] = y->literal[2];
 108    z.literal[3] = y->literal[3];
 109    z.a_id = y->a_id;
 110    if (y->locals) {
 111       if (!slang_variable_scope_copy(z.locals, y->locals)) {
 112          slang_operation_destruct(&z);
 113          return GL_FALSE;
 114       }
 115    }
 116 #if 0
 117    z.var = y->var;
 118    z.fun = y->fun;
 119 #endif
 120    slang_operation_destruct(x);
 121    *x = z;
 122    return GL_TRUE;
 123 }
 124
 125
 126 slang_operation *
 127 slang_operation_new(GLuint count)
 128 {
 129    slang_operation *ops
 130        = (slang_operation *) _mesa_malloc(count * sizeof(slang_operation));
 131    assert(count > 0);
 132    if (ops) {
 133       GLuint i;
 134       for (i = 0; i < count; i++)
 135          slang_operation_construct(ops + i);
 136    }
 137    return ops;
 138 }
 139
 140
 141 /**
 142  * Delete operation and all children
 143  */
 144 void
 145 slang_operation_delete(slang_operation *oper)
 146 {
 147    slang_operation_destruct(oper);
 148    _mesa_free(oper);
 149 }
 150
 151
 152 slang_operation *
 153 slang_operation_grow(GLuint *numChildren, slang_operation **children)
 154 {
 155    slang_operation *ops;
 156
 157    ops = (slang_operation *)
 158       slang_alloc_realloc(*children,
 159                           *numChildren * sizeof(slang_operation),
 160                           (*numChildren + 1) * sizeof(slang_operation));
 161    if (ops) {
 162       slang_operation *newOp = ops + *numChildren;
 163       if (!slang_operation_construct(newOp)) {
 164          _mesa_free(ops);
 165          *children = NULL;
 166          return NULL;
 167       }
 168       *children = ops;
 169       (*numChildren)++;
 170       return newOp;
 171    }
 172    return NULL;
 173 }
 174
 175 /**
 176  * Insert a new slang_operation into an array.
 177  * \param numChildren  pointer to current number of children (in/out)
 178  * \param children  address of array (in/out)
 179  * \param pos  position to insert
 180  * \return  pointer to the new operation
 181  */
 182 slang_operation *
 183 slang_operation_insert(GLuint *numChildren, slang_operation **children,
 184                        GLuint pos)
 185 {
 186    slang_operation *ops;
 187
 188    assert(pos <= *numChildren);
 189
 190    ops = (slang_operation *)
 191       _mesa_malloc((*numChildren + 1) * sizeof(slang_operation));
 192    if (ops) {
 193       slang_operation *newOp;
 194       newOp = ops + pos;
 195       if (pos > 0)
 196          _mesa_memcpy(ops, *children, pos * sizeof(slang_operation));
 197       if (pos < *numChildren)
 198          _mesa_memcpy(newOp + 1, (*children) + pos,
 199                       (*numChildren - pos) * sizeof(slang_operation));
 200
 201       if (!slang_operation_construct(newOp)) {
 202          _mesa_free(ops);
 203          *numChildren = 0;
 204          *children = NULL;
 205          return NULL;
 206       }
 207       *children = ops;
 208       (*numChildren)++;
 209       return newOp;
 210    }
 211    return NULL;
 212 }
 213