aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/Mesa/src/mesa/shader/slang/MachineIndependent/parseConst.cpp
blob: 1ea91b3c52d6506f73a72a35b805e1938fcf97e6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
//
//Copyright (C) 2002-2005  3Dlabs Inc. Ltd.
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
//    Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
//    Redistributions in binary form must reproduce the above
//    copyright notice, this list of conditions and the following
//    disclaimer in the documentation and/or other materials provided
//    with the distribution.
//
//    Neither the name of 3Dlabs Inc. Ltd. nor the names of its
//    contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//POSSIBILITY OF SUCH DAMAGE.
//

#include "ParseHelper.h"

//
// Use this class to carry along data from node to node in 
// the traversal
//
class TConstTraverser : public TIntermTraverser {
public:
    TConstTraverser(constUnion* cUnion, bool singleConstParam, TOperator constructType, TInfoSink& sink, TSymbolTable& symTable, TType& t) : unionArray(cUnion), type(t),
        constructorType(constructType), singleConstantParam(singleConstParam), infoSink(sink), symbolTable(symTable), error(false), isMatrix(false), matrixSize(0) {  index = 0; tOp = EOpNull;}
    int index ;
    constUnion *unionArray;
    TOperator tOp;
    TType type;
    TOperator constructorType;
    bool singleConstantParam;
    TInfoSink& infoSink;
    TSymbolTable& symbolTable;
    bool error;
    int size; // size of the constructor ( 4 for vec4)
    bool isMatrix;
    int matrixSize; // dimension of the matrix (nominal size and not the instance size)
};

//
// The rest of the file are the traversal functions.  The last one
// is the one that starts the traversal.
//
// Return true from interior nodes to have the external traversal
// continue on to children.  If you process children yourself,
// return false.
//

void ParseSymbol(TIntermSymbol* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    TQualifier qualifier = node->getType().getQualifier();
    constUnion* unionArray = oit->unionArray;
    int instanceSize;
    if (oit->type.getBasicType() == EbtStruct)
        instanceSize = oit->type.getStructSize();
    else
        instanceSize = oit->type.getInstanceSize();

    if (oit->index >= instanceSize)
        return;

    if (qualifier != EvqConst) {
        char buf[200];
        sprintf(buf, "'constructor' : assigning non-constant to %s", oit->type.getCompleteString().c_str());
        oit->infoSink.info.message(EPrefixError, buf, node->getLine());
        oit->error = true;
        return ;  
    }
    TSymbol* symbol = oit->symbolTable.find(node->getSymbol());
    TVariable* tVar = static_cast<TVariable*>(symbol);

    constUnion* constArray = tVar->getConstPointer();
    if (!constArray) {
        char buf[200];
        sprintf(buf, "'constructor' : constant '%s' has not been initialized correctly", node->getSymbol().c_str());
        oit->infoSink.info.message(EPrefixError, buf, node->getLine());
        oit->error = true;
        return;
    }
    int symbolSize;

    if (tVar->getType().getBasicType() == EbtStruct)
        symbolSize = tVar->getType().getStructSize();
    else 
        symbolSize = tVar->getType().getInstanceSize();
    
    // for constructors such as ivec4(vec4), if vec4 is a symbol node, then the appropriate conversion is required as the
    // types do not match
    for (int i = 0; i < symbolSize; i++) {
        if (oit->index >= instanceSize)
            return;
        if (tVar->getType().getBasicType() == oit->type.getBasicType() || oit->type.getBasicType() == EbtStruct)
            (unionArray[oit->index]) = constArray[i];
        else {
            switch (tVar->getType().getBasicType()) {
            case EbtFloat:
                switch (oit->type.getBasicType()) {
                case EbtInt:  unionArray[oit->index].iConst = static_cast<int> (constArray[i].fConst);  break;
                case EbtBool: unionArray[oit->index].bConst = constArray[i].fConst != 0.0; break;    
                default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
                }
                break;
            case EbtInt:
                switch (oit->type.getBasicType()) {
                case EbtFloat:  unionArray[oit->index].fConst = static_cast<float>(constArray[i].iConst);  break;
                case EbtBool: unionArray[oit->index].bConst = constArray[i].iConst != 0 ; break;    
                default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
                }
                break;
            case EbtBool:
                switch (oit->type.getBasicType()) {
                case EbtFloat:  unionArray[oit->index].fConst = static_cast<float>(constArray[i].bConst);  break;
                case EbtInt: unionArray[oit->index].iConst = static_cast<int> (constArray[i].bConst); break;    
                default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
                }
                break;
            default: oit->infoSink.info.message(EPrefixInternalError, "Incorrect type, cannot parse symbol", node->getLine()); break;
            } 
        }
    (oit->index)++;
    }
}

bool ParseBinary(bool /* preVisit */, TIntermBinary* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    
    TQualifier qualifier = node->getType().getQualifier();
    
    if (qualifier != EvqConst) {
        char buf[200];
        sprintf(buf, "'constructor' : assigning non-constant to %s", oit->type.getCompleteString().c_str());
        oit->infoSink.info.message(EPrefixError, buf, node->getLine());
        oit->error = true;
        return false;  
    }

   oit->infoSink.info.message(EPrefixInternalError, "Binary Node found in constant constructor", node->getLine());
    
    return false;
}

bool ParseUnary(bool /* preVisit */, TIntermUnary* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);

    char buf[200];
    sprintf(buf, "'constructor' : assigning non-constant to '%s'", oit->type.getCompleteString().c_str());
    oit->infoSink.info.message(EPrefixError, buf, node->getLine());
    oit->error = true;
    return false;  
}

bool ParseAggregate(bool /* preVisit */, TIntermAggregate* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);

    if (!node->isConstructor() && node->getOp() != EOpComma) {
        char buf[200];
        sprintf(buf, "'constructor' : assigning non-constant to '%s'", oit->type.getCompleteString().c_str());
        oit->infoSink.info.message(EPrefixError, buf, node->getLine());
        oit->error = true;
        return false;  
    }

    if (node->getSequence().size() == 0) {
        oit->error = true;
        return false;
    }

    bool flag = node->getSequence().size() == 1 && node->getSequence()[0]->getAsTyped()->getAsConstantUnion();
    if (flag) 
    {
        oit->singleConstantParam = true; 
        oit->constructorType = node->getOp();
        if (node->getType().getBasicType() == EbtStruct)
            oit->size = node->getType().getStructSize();
        else
            oit->size = node->getType().getInstanceSize();
        if (node->getType().isMatrix()) {
            oit->isMatrix = true;
            oit->matrixSize = node->getType().getNominalSize();
        }
    }       

    for (TIntermSequence::iterator p = node->getSequence().begin(); 
                                   p != node->getSequence().end(); p++) {

        if (node->getOp() == EOpComma)
            oit->index = 0;           

        (*p)->traverse(oit);
    }   
    if (flag) 
    {
        oit->singleConstantParam = false;   
        oit->constructorType = EOpNull;
        oit->size = 0;
        oit->isMatrix = false;
        oit->matrixSize = 0;
    }
    return false;
}

bool ParseSelection(bool /* preVisit */, TIntermSelection* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    oit->infoSink.info.message(EPrefixInternalError, "Selection Node found in constant constructor", node->getLine());
    oit->error = true;
    return false;
}

void ParseConstantUnion(TIntermConstantUnion* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    constUnion* leftUnionArray = oit->unionArray;
    int instanceSize;
    if (oit->type.getBasicType() == EbtStruct)
        instanceSize = oit->type.getStructSize();
    else
        instanceSize = oit->type.getInstanceSize();

    if (oit->index >= instanceSize)
        return;

    if (!oit->singleConstantParam) {
        int size;
        if (node->getType().getBasicType() == EbtStruct)
            size = node->getType().getStructSize();
        else
            size = node->getType().getInstanceSize();
    
        constUnion *rightUnionArray = node->getUnionArrayPointer();
        for (int i=0; i < size; i++) {
            if (oit->index >= instanceSize)
                return;
            leftUnionArray[oit->index] = rightUnionArray[i];

            (oit->index)++;
        }
    } else {
        int size, totalSize, matrixSize;
        bool isMatrix = false;
        size = oit->size;
        matrixSize = oit->matrixSize;
        isMatrix = oit->isMatrix;
        totalSize = oit->index + size ;
        constUnion *rightUnionArray = node->getUnionArrayPointer();
        if (!isMatrix) {
            int count = 0;
            for (int i = oit->index; i < totalSize; i++) {
                if (i >= instanceSize)
                    return;

                leftUnionArray[i] = rightUnionArray[count];

                (oit->index)++;
                if (node->getType().getBasicType() == EbtStruct && node->getType().getStructSize() > 1 ||
                    node->getType().getBasicType() != EbtStruct && node->getType().getInstanceSize() > 1)
                    count++;                
            }
        } else {  // for matrix constructors
            int count = 0;
            int index = oit->index;
            for (int i = index; i < totalSize; i++) {
                if (i >= instanceSize)
                    return;
                if (index - i == 0 || (i - index) % (matrixSize + 1) == 0 )
                    leftUnionArray[i] = rightUnionArray[count];
                else 
                    leftUnionArray[i].fConst = 0.0;

                (oit->index)++;
                if (node->getType().getBasicType() == EbtStruct && node->getType().getStructSize() > 1 ||
                    node->getType().getBasicType() != EbtStruct && node->getType().getInstanceSize() > 1)
                    count++;                
            }
        }
    }
}

bool ParseLoop(bool /* preVisit */, TIntermLoop* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    oit->infoSink.info.message(EPrefixInternalError, "Loop Node found in constant constructor", node->getLine());
    oit->error = true;
    return false;
}

bool ParseBranch(bool /* previsit*/, TIntermBranch* node, TIntermTraverser* it)
{
    TConstTraverser* oit = static_cast<TConstTraverser*>(it);
    oit->infoSink.info.message(EPrefixInternalError, "Branch Node found in constant constructor", node->getLine());
    oit->error = true;
    return false;
}

//
// This function is the one to call externally to start the traversal.
// Individual functions can be initialized to 0 to skip processing of that
// type of node.  It's children will still be processed.
//
bool TIntermediate::parseConstTree(TSourceLoc line, TIntermNode* root, constUnion* unionArray, TOperator constructorType, TSymbolTable& symbolTable, TType t, bool singleConstantParam)
{
    if (root == 0)
        return false;

    TConstTraverser it(unionArray, singleConstantParam, constructorType, infoSink, symbolTable, t);
    
    it.visitAggregate = ParseAggregate;
    it.visitBinary = ParseBinary;
    it.visitConstantUnion = ParseConstantUnion;
    it.visitSelection = ParseSelection;
    it.visitSymbol = ParseSymbol;
    it.visitUnary = ParseUnary;
    it.visitLoop = ParseLoop;
    it.visitBranch = ParseBranch;

    root->traverse(&it);
    if (it.error)
        return true;
    else
        return false;
}