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
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
|
/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cameron Bateman/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.validation.internal.el.operators;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jst.jsf.common.internal.types.FloatLiteralType;
import org.eclipse.jst.jsf.common.internal.types.IAssignable;
import org.eclipse.jst.jsf.common.internal.types.IntegerLiteralType;
import org.eclipse.jst.jsf.common.internal.types.LiteralType;
import org.eclipse.jst.jsf.common.internal.types.TypeCoercer;
import org.eclipse.jst.jsf.common.internal.types.TypeCoercionException;
import org.eclipse.jst.jsf.common.internal.types.TypeConstants;
import org.eclipse.jst.jsf.common.internal.types.TypeTransformer;
import org.eclipse.jst.jsf.common.internal.types.ValueType;
import org.eclipse.jst.jsf.validation.internal.el.diagnostics.DiagnosticFactory;
/**
* Represents the EL modulo operator: % or mod
* Based JSP.2.3.5.3
*
* @author cbateman
*
*/
/*package*/ class ModArithmeticBinaryOperator extends ArithmeticBinaryOperator
{
private static final String MODULO = "modulo";
ModArithmeticBinaryOperator(DiagnosticFactory diagnosticFactory) {
super(diagnosticFactory);
}
public ValueType performOperation(ValueType firstArg, ValueType secondArg)
{
// JSP.2.3.5.3, step 1 if both null, then return zero
if (TypeCoercer.typeIsNull(firstArg.getSignature())
&& TypeCoercer.typeIsNull(secondArg.getSignature()))
{
return IntegerLiteralType.ZERO;
}
final String boxedFirstArg = TypeTransformer.transformBoxPrimitives(firstArg.getSignature());
final String boxedSecondArg = TypeTransformer.transformBoxPrimitives(secondArg.getSignature());
// JSP.2.3.5.3, step 2, if either arg is BigDecimal, Float, Double
// or String (ignoring whether it is value coercable), then coerce
// to Double and do op
if (TypeConstants.TYPE_BIG_DOUBLE.equals(boxedFirstArg)
|| TypeConstants.TYPE_BIG_DOUBLE.equals(boxedSecondArg)
|| TypeConstants.TYPE_BOXED_DOUBLE.equals(boxedFirstArg)
|| TypeConstants.TYPE_BOXED_DOUBLE.equals(boxedSecondArg)
|| TypeConstants.TYPE_BOXED_FLOAT.equals(boxedFirstArg)
|| TypeConstants.TYPE_BOXED_FLOAT.equals(boxedSecondArg))
{
// TODO: handle case where one is a literal or resolvable string value
// that containss ".", "e" or "E"
return performDouble(firstArg, secondArg);
}
// JSP.2.3.5.3, step 3, if either arg is a BigInteger, coerce
// both to BigInteger
if (TypeConstants.TYPE_BIG_INTEGER.equals(boxedFirstArg)
|| TypeConstants.TYPE_BIG_INTEGER.equals(boxedSecondArg))
{
return performBigInteger(firstArg, secondArg);
}
// JSP.2.3.5.3, step 4, otherwise try to perform as a Long op
return performLong(firstArg, secondArg);
}
public Diagnostic validate(ValueType firstArg, ValueType secondArg) {
// JSP.2.3.5.3, step 1 if both null, then return zero
if (TypeCoercer.typeIsNull(firstArg.getSignature())
&& TypeCoercer.typeIsNull(secondArg.getSignature()))
{
return _diagnosticFactory.create_BINARY_OP_BOTH_OPERANDS_NULL(MODULO);
}
final String boxedFirstArg = TypeTransformer.transformBoxPrimitives(firstArg.getSignature());
final String boxedSecondArg = TypeTransformer.transformBoxPrimitives(secondArg.getSignature());
// JSP.2.3.5.3, step 2, if either arg is BigDecimal, Float, Double
// or String (ignoring whether it is value coercable), then coerce
// to Double and do op
if (TypeConstants.TYPE_BIG_DOUBLE.equals(boxedFirstArg)
|| TypeConstants.TYPE_BIG_DOUBLE.equals(boxedSecondArg)
|| TypeConstants.TYPE_BOXED_DOUBLE.equals(boxedFirstArg)
|| TypeConstants.TYPE_BOXED_DOUBLE.equals(boxedSecondArg)
|| TypeConstants.TYPE_BOXED_FLOAT.equals(boxedFirstArg)
|| TypeConstants.TYPE_BOXED_FLOAT.equals(boxedSecondArg))
{
// TODO: handle case where one is a literal or resolvable string value
// that containss ".", "e" or "E"
return validateDouble(firstArg, secondArg);
}
// JSP.2.3.5.3, step 3, if either arg is a BigInteger, coerce
// both to BigInteger
if (TypeConstants.TYPE_BIG_INTEGER.equals(boxedFirstArg)
|| TypeConstants.TYPE_BIG_INTEGER.equals(boxedSecondArg))
{
return validateBigInteger(firstArg, secondArg);
}
// JSP.2.3.5.3, step 4, otherwise try to perform as a Long op
return validateLong(firstArg, secondArg);
}
private ValueType performDouble(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
Number secondValue = null;
if (secondArg instanceof LiteralType)
{
secondValue = ((LiteralType)secondArg).coerceToNumber(Double.class);
if (secondValue.doubleValue() == 0.0)
{
// division by zero
return null;
}
}
Number firstValue = null;
if (firstArg instanceof LiteralType)
{
firstValue = ((LiteralType)firstArg).coerceToNumber(Double.class);
}
if (firstValue != null && secondValue != null)
{
return new FloatLiteralType(
doRealOperation(new Double(firstValue.doubleValue()),
new Double(secondValue.doubleValue())).doubleValue());
}
// if we get to here, the coercion is valid, so a Double will be
// returned
return new ValueType(Signature.SIG_DOUBLE, IAssignable.ASSIGNMENT_TYPE_RHS);
}
catch (TypeCoercionException tce)
{
// could not coerce, so null
return null;
}
}
private ValueType performBigInteger(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
// check second arg for zero
if (secondArg instanceof LiteralType)
{
if (((LiteralType)secondArg).coerceToNumber(BigInteger.class).equals(BigInteger.ZERO))
{
// division by zero
return null;
}
}
// since one of the args is BigInteger, they are not both literals,
// so if we get to here, we have a successful mod of two
// big integers to one big integer
return new ValueType(TypeConstants.TYPE_BIG_INTEGER, IAssignable.ASSIGNMENT_TYPE_RHS);
}
catch (TypeCoercionException tce)
{
// no coercion
return null;
}
}
private ValueType performLong(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
Number secondValue = null;
if (secondArg instanceof LiteralType)
{
secondValue = ((LiteralType)secondArg).coerceToNumber(Long.class);
if (secondValue.longValue() == 0)
{
// division by zero
return null;
}
}
Number firstValue = null;
if (firstArg instanceof LiteralType)
{
firstValue = ((LiteralType)firstArg).coerceToNumber(Long.class);
}
if (firstValue != null && secondValue != null)
{
return new IntegerLiteralType(
doRealOperation(Long.valueOf(firstValue.longValue()),
Long.valueOf(secondValue.longValue())).longValue());
}
// if we get to here, the coercion is valid, so a Long will be
// returned
return new ValueType(Signature.SIG_LONG, IAssignable.ASSIGNMENT_TYPE_RHS);
}
catch (TypeCoercionException tce)
{
// could not coerce, so null
return null;
}
}
private Diagnostic validateDouble(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
Number secondValue = null;
if (secondArg instanceof LiteralType)
{
secondValue = ((LiteralType)secondArg).coerceToNumber(Double.class);
if (secondValue.doubleValue() == 0.0)
{
// division by zero
return _diagnosticFactory.create_BINARY_OP_POSSIBLE_DIVISION_BY_ZERO();
}
}
Number firstValue = null;
if (firstArg instanceof LiteralType)
{
firstValue = ((LiteralType)firstArg).coerceToNumber(Double.class);
}
if (firstValue != null && secondValue != null)
{
return _diagnosticFactory.
create_BINARY_OP_CONSTANT_EXPRESSION_ALWAYS_EVAL_SAME
(MODULO, Double.toString(
firstValue.doubleValue()%secondValue.doubleValue()));
}
// if we get to here, the coercion is valid, so a Double will be
// returned and everything is good
return Diagnostic.OK_INSTANCE;
}
catch (TypeCoercionException tce)
{
// could not coerce, so error
return _diagnosticFactory.
create_BINARY_OP_COULD_NOT_MAKE_NUMERIC_COERCION(MODULO);
}
}
private Diagnostic validateBigInteger(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
// check second arg for zero
if (secondArg instanceof LiteralType)
{
if (((LiteralType)secondArg).coerceToNumber(BigInteger.class).equals(BigInteger.ZERO))
{
// division by zero
return _diagnosticFactory.create_BINARY_OP_POSSIBLE_DIVISION_BY_ZERO();
}
}
// since one of the args is BigInteger, they are not both literals,
// so if we get to here, we have a successful mod of two
// big integers to one big integer
return Diagnostic.OK_INSTANCE;
}
catch (TypeCoercionException tce)
{
// no coercion
return _diagnosticFactory.
create_BINARY_OP_COULD_NOT_MAKE_NUMERIC_COERCION(MODULO);
}
}
private Diagnostic validateLong(ValueType firstArg, ValueType secondArg)
{
try
{
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(firstArg.getSignature()));
TypeCoercer.coerceToNumber(TypeTransformer.transformBoxPrimitives(secondArg.getSignature()));
Number secondValue = null;
if (secondArg instanceof LiteralType)
{
secondValue = ((LiteralType)secondArg).coerceToNumber(Long.class);
if (secondValue.longValue() == 0)
{
// division by zero
return _diagnosticFactory.
create_BINARY_OP_POSSIBLE_DIVISION_BY_ZERO();
}
}
Number firstValue = null;
if (firstArg instanceof LiteralType)
{
firstValue = ((LiteralType)firstArg).coerceToNumber(Long.class);
}
if (firstValue != null && secondValue != null)
{
return _diagnosticFactory.
create_BINARY_OP_CONSTANT_EXPRESSION_ALWAYS_EVAL_SAME
(MODULO, Long.toString(firstValue.longValue()%secondValue.longValue()));
}
// if we get to here, the coercion is valid, so a Long will be
// returned
return Diagnostic.OK_INSTANCE;
}
catch (TypeCoercionException tce)
{
// could not coerce, so error
return _diagnosticFactory.
create_BINARY_OP_COULD_NOT_MAKE_NUMERIC_COERCION(MODULO);
}
}
protected Long doRealOperation(Long firstArg, Long secondArg) {
return Long.valueOf(firstArg.longValue() % secondArg.longValue());
}
protected Double doRealOperation(Double firstArg, Double secondArg) {
return new Double(firstArg.doubleValue() % secondArg.doubleValue());
}
protected BigDecimal doRealOperation(BigDecimal firstArg,
BigDecimal secondArg) {
return new BigDecimal(firstArg.doubleValue() % secondArg.doubleValue());
}
protected String getOperatorName() {
return MODULO;
}
}
|
