2
//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
5
//Redistribution and use in source and binary forms, with or without
6
//modification, are permitted provided that the following conditions
9
// Redistributions of source code must retain the above copyright
10
// notice, this list of conditions and the following disclaimer.
12
// Redistributions in binary form must reproduce the above
13
// copyright notice, this list of conditions and the following
14
// disclaimer in the documentation and/or other materials provided
15
// with the distribution.
17
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
18
// contributors may be used to endorse or promote products derived
19
// from this software without specific prior written permission.
21
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32
//POSSIBILITY OF SUCH DAMAGE.
35
#include "ParseHelper.h"
38
// Use this class to carry along data from node to node in
41
class TConstTraverser : public TIntermTraverser {
43
TConstTraverser(constUnion* cUnion, bool singleConstParam, TOperator constructType, TInfoSink& sink, TSymbolTable& symTable, TType& t) : unionArray(cUnion), type(t),
44
constructorType(constructType), singleConstantParam(singleConstParam), infoSink(sink), symbolTable(symTable), error(false), isMatrix(false), matrixSize(0) { index = 0; tOp = EOpNull;}
46
constUnion *unionArray;
49
TOperator constructorType;
50
bool singleConstantParam;
52
TSymbolTable& symbolTable;
54
int size; // size of the constructor ( 4 for vec4)
56
int matrixSize; // dimension of the matrix (nominal size and not the instance size)
60
// The rest of the file are the traversal functions. The last one
61
// is the one that starts the traversal.
63
// Return true from interior nodes to have the external traversal
64
// continue on to children. If you process children yourself,
68
void ParseSymbol(TIntermSymbol* node, TIntermTraverser* it)
70
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
71
TQualifier qualifier = node->getType().getQualifier();
72
constUnion* unionArray = oit->unionArray;
74
if (oit->type.getBasicType() == EbtStruct)
75
instanceSize = oit->type.getStructSize();
77
instanceSize = oit->type.getInstanceSize();
79
if (oit->index >= instanceSize)
82
if (qualifier != EvqConst) {
84
sprintf(buf, "'constructor' : assigning non-constant to %s", oit->type.getCompleteString().c_str());
85
oit->infoSink.info.message(EPrefixError, buf, node->getLine());
89
TSymbol* symbol = oit->symbolTable.find(node->getSymbol());
90
TVariable* tVar = static_cast<TVariable*>(symbol);
92
constUnion* constArray = tVar->getConstPointer();
95
sprintf(buf, "'constructor' : constant '%s' has not been initialized correctly", node->getSymbol().c_str());
96
oit->infoSink.info.message(EPrefixError, buf, node->getLine());
102
if (tVar->getType().getBasicType() == EbtStruct)
103
symbolSize = tVar->getType().getStructSize();
105
symbolSize = tVar->getType().getInstanceSize();
107
// for constructors such as ivec4(vec4), if vec4 is a symbol node, then the appropriate conversion is required as the
108
// types do not match
109
for (int i = 0; i < symbolSize; i++) {
110
if (oit->index >= instanceSize)
112
if (tVar->getType().getBasicType() == oit->type.getBasicType() || oit->type.getBasicType() == EbtStruct)
113
(unionArray[oit->index]) = constArray[i];
115
switch (tVar->getType().getBasicType()) {
117
switch (oit->type.getBasicType()) {
118
case EbtInt: unionArray[oit->index].iConst = static_cast<int> (constArray[i].fConst); break;
119
case EbtBool: unionArray[oit->index].bConst = constArray[i].fConst != 0.0; break;
120
default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
124
switch (oit->type.getBasicType()) {
125
case EbtFloat: unionArray[oit->index].fConst = static_cast<float>(constArray[i].iConst); break;
126
case EbtBool: unionArray[oit->index].bConst = constArray[i].iConst != 0 ; break;
127
default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
131
switch (oit->type.getBasicType()) {
132
case EbtFloat: unionArray[oit->index].fConst = static_cast<float>(constArray[i].bConst); break;
133
case EbtInt: unionArray[oit->index].iConst = static_cast<int> (constArray[i].bConst); break;
134
default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
137
default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
144
bool ParseBinary(bool /* preVisit */, TIntermBinary* node, TIntermTraverser* it)
146
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
148
TQualifier qualifier = node->getType().getQualifier();
150
if (qualifier != EvqConst) {
152
sprintf(buf, "'constructor' : assigning non-constant to %s", oit->type.getCompleteString().c_str());
153
oit->infoSink.info.message(EPrefixError, buf, node->getLine());
158
oit->infoSink.info.message(EPrefixInternalError, "Binary Node found in constant constructor", node->getLine());
163
bool ParseUnary(bool /* preVisit */, TIntermUnary* node, TIntermTraverser* it)
165
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
168
sprintf(buf, "'constructor' : assigning non-constant to '%s'", oit->type.getCompleteString().c_str());
169
oit->infoSink.info.message(EPrefixError, buf, node->getLine());
174
bool ParseAggregate(bool /* preVisit */, TIntermAggregate* node, TIntermTraverser* it)
176
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
178
if (!node->isConstructor() && node->getOp() != EOpComma) {
180
sprintf(buf, "'constructor' : assigning non-constant to '%s'", oit->type.getCompleteString().c_str());
181
oit->infoSink.info.message(EPrefixError, buf, node->getLine());
186
if (node->getSequence().size() == 0) {
191
bool flag = node->getSequence().size() == 1 && node->getSequence()[0]->getAsTyped()->getAsConstantUnion();
194
oit->singleConstantParam = true;
195
oit->constructorType = node->getOp();
196
if (node->getType().getBasicType() == EbtStruct)
197
oit->size = node->getType().getStructSize();
199
oit->size = node->getType().getInstanceSize();
200
if (node->getType().isMatrix()) {
201
oit->isMatrix = true;
202
oit->matrixSize = node->getType().getNominalSize();
206
for (TIntermSequence::iterator p = node->getSequence().begin();
207
p != node->getSequence().end(); p++) {
209
if (node->getOp() == EOpComma)
216
oit->singleConstantParam = false;
217
oit->constructorType = EOpNull;
219
oit->isMatrix = false;
225
bool ParseSelection(bool /* preVisit */, TIntermSelection* node, TIntermTraverser* it)
227
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
228
oit->infoSink.info.message(EPrefixInternalError, "Selection Node found in constant constructor", node->getLine());
233
void ParseConstantUnion(TIntermConstantUnion* node, TIntermTraverser* it)
235
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
236
constUnion* leftUnionArray = oit->unionArray;
238
if (oit->type.getBasicType() == EbtStruct)
239
instanceSize = oit->type.getStructSize();
241
instanceSize = oit->type.getInstanceSize();
243
if (oit->index >= instanceSize)
246
if (!oit->singleConstantParam) {
248
if (node->getType().getBasicType() == EbtStruct)
249
size = node->getType().getStructSize();
251
size = node->getType().getInstanceSize();
253
constUnion *rightUnionArray = node->getUnionArrayPointer();
254
for (int i=0; i < size; i++) {
255
if (oit->index >= instanceSize)
257
leftUnionArray[oit->index] = rightUnionArray[i];
262
int size, totalSize, matrixSize;
263
bool isMatrix = false;
265
matrixSize = oit->matrixSize;
266
isMatrix = oit->isMatrix;
267
totalSize = oit->index + size ;
268
constUnion *rightUnionArray = node->getUnionArrayPointer();
271
for (int i = oit->index; i < totalSize; i++) {
272
if (i >= instanceSize)
275
leftUnionArray[i] = rightUnionArray[count];
278
if (node->getType().getBasicType() == EbtStruct && node->getType().getStructSize() > 1 ||
279
node->getType().getBasicType() != EbtStruct && node->getType().getInstanceSize() > 1)
282
} else { // for matrix constructors
284
int index = oit->index;
285
for (int i = index; i < totalSize; i++) {
286
if (i >= instanceSize)
288
if (index - i == 0 || (i - index) % (matrixSize + 1) == 0 )
289
leftUnionArray[i] = rightUnionArray[count];
291
leftUnionArray[i].fConst = 0.0;
294
if (node->getType().getBasicType() == EbtStruct && node->getType().getStructSize() > 1 ||
295
node->getType().getBasicType() != EbtStruct && node->getType().getInstanceSize() > 1)
302
bool ParseLoop(bool /* preVisit */, TIntermLoop* node, TIntermTraverser* it)
304
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
305
oit->infoSink.info.message(EPrefixInternalError, "Loop Node found in constant constructor", node->getLine());
310
bool ParseBranch(bool /* previsit*/, TIntermBranch* node, TIntermTraverser* it)
312
TConstTraverser* oit = static_cast<TConstTraverser*>(it);
313
oit->infoSink.info.message(EPrefixInternalError, "Branch Node found in constant constructor", node->getLine());
319
// This function is the one to call externally to start the traversal.
320
// Individual functions can be initialized to 0 to skip processing of that
321
// type of node. It's children will still be processed.
323
bool TIntermediate::parseConstTree(TSourceLoc line, TIntermNode* root, constUnion* unionArray, TOperator constructorType, TSymbolTable& symbolTable, TType t, bool singleConstantParam)
328
TConstTraverser it(unionArray, singleConstantParam, constructorType, infoSink, symbolTable, t);
330
it.visitAggregate = ParseAggregate;
331
it.visitBinary = ParseBinary;
332
it.visitConstantUnion = ParseConstantUnion;
333
it.visitSelection = ParseSelection;
334
it.visitSymbol = ParseSymbol;
335
it.visitUnary = ParseUnary;
336
it.visitLoop = ParseLoop;
337
it.visitBranch = ParseBranch;