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
|
/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.codeInspection.dataFlow;
import com.intellij.psi.*;
import com.siyeh.ig.psiutils.ExpressionUtils;
import org.jetbrains.annotations.NotNull;
import java.util.Collections;
import java.util.List;
import static com.intellij.codeInspection.dataFlow.MethodContract.ValueConstraint.*;
import static com.intellij.codeInspection.dataFlow.MethodContract.createConstraintArray;
/**
* @author peter
*/
class HardcodedContracts {
static List<MethodContract> getHardcodedContracts(@NotNull PsiMethod method, @NotNull PsiMethodCallExpression call) {
PsiClass owner = method.getContainingClass();
if (owner == null) return Collections.emptyList();
final int paramCount = method.getParameterList().getParametersCount();
String className = owner.getQualifiedName();
String methodName = method.getName();
if ("java.lang.System".equals(className)) {
if ("exit".equals(methodName)) {
return Collections.singletonList(new MethodContract(createConstraintArray(paramCount), THROW_EXCEPTION));
}
}
else if ("com.google.common.base.Preconditions".equals(className)) {
if ("checkNotNull".equals(methodName) && paramCount > 0) {
MethodContract.ValueConstraint[] constraints = createConstraintArray(paramCount);
constraints[0] = NULL_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
}
else if ("junit.framework.Assert".equals(className) ||
"org.junit.Assert".equals(className) ||
"junit.framework.TestCase".equals(className) ||
"org.testng.Assert".equals(className) ||
"org.testng.AssertJUnit".equals(className)) {
return handleTestFrameworks(paramCount, className, methodName, call);
}
return Collections.emptyList();
}
private static boolean isNotNullMatcher(PsiExpression expr) {
if (expr instanceof PsiMethodCallExpression) {
String calledName = ((PsiMethodCallExpression)expr).getMethodExpression().getReferenceName();
if ("notNullValue".equals(calledName)) {
return true;
}
if ("not".equals(calledName)) {
PsiExpression[] notArgs = ((PsiMethodCallExpression)expr).getArgumentList().getExpressions();
if (notArgs.length == 1 &&
notArgs[0] instanceof PsiMethodCallExpression &&
"equalTo".equals(((PsiMethodCallExpression)notArgs[0]).getMethodExpression().getReferenceName())) {
PsiExpression[] equalArgs = ((PsiMethodCallExpression)notArgs[0]).getArgumentList().getExpressions();
if (equalArgs.length == 1 && ExpressionUtils.isNullLiteral(equalArgs[0])) {
return true;
}
}
}
}
return false;
}
private static List<MethodContract> handleTestFrameworks(int paramCount, String className, String methodName,
@NotNull PsiMethodCallExpression call) {
if ("assertThat".equals(methodName)) {
PsiExpression[] args = call.getArgumentList().getExpressions();
if (args.length == paramCount) {
for (int i = 1; i < args.length; i++) {
if (isNotNullMatcher(args[i])) {
MethodContract.ValueConstraint[] constraints = createConstraintArray(args.length);
constraints[i - 1] = NULL_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
}
}
return Collections.emptyList();
}
if (!"junit.framework.Assert".equals(className) &&
!"junit.framework.TestCase".equals(className) &&
!"org.junit.Assert".equals(className) &&
!"org.testng.Assert".equals(className) &&
!"org.testng.AssertJUnit".equals(className)) {
return Collections.emptyList();
}
boolean testng = className.startsWith("org.testng.");
if ("fail".equals(methodName)) {
return Collections.singletonList(new MethodContract(createConstraintArray(paramCount), THROW_EXCEPTION));
}
int checkedParam = testng ? 0 : paramCount - 1;
MethodContract.ValueConstraint[] constraints = createConstraintArray(paramCount);
if ("assertTrue".equals(methodName)) {
constraints[checkedParam] = FALSE_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
if ("assertFalse".equals(methodName)) {
constraints[checkedParam] = TRUE_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
if ("assertNull".equals(methodName)) {
constraints[checkedParam] = NOT_NULL_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
if ("assertNotNull".equals(methodName)) {
constraints[checkedParam] = NULL_VALUE;
return Collections.singletonList(new MethodContract(constraints, THROW_EXCEPTION));
}
return Collections.emptyList();
}
}
|
