Package org.eclipse.jdt.internal.compiler.lookup

Examples of org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding

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
  UnconditionalFlowInfo flowInfo = this.upstreamNullFlowInfo.
    addPotentialNullInfoFrom(callerFlowInfo.unconditionalInitsWithoutSideEffect());
  if ((this.tagBits & FlowContext.DEFER_NULL_DIAGNOSTIC) != 0) {
    // check only immutable null checks on innermost looping context
    for (int i = 0; i < this.nullCount; i++) {
      LocalVariableBinding local = this.nullLocals[i];
      Expression expression = this.nullReferences[i];
      // final local variable
      switch (this.nullCheckTypes[i]) {
        case CAN_ONLY_NON_NULL | IN_COMPARISON_NULL:
        case CAN_ONLY_NON_NULL | IN_COMPARISON_NON_NULL:
          if (flowInfo.isDefinitelyNonNull(local)) {
            this.nullReferences[i] = null;
            if (this.nullCheckTypes[i] == (CAN_ONLY_NON_NULL | IN_COMPARISON_NON_NULL)) {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableRedundantCheckOnNonNull(local, expression);
              }
            } else {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableNonNullComparedToNull(local, expression);
              }
            }
            continue;
          }
          break;
        case CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NULL:
        case CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NON_NULL:
          if (flowInfo.isDefinitelyNonNull(local)) {
            this.nullReferences[i] = null;
            if (this.nullCheckTypes[i] == (CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NON_NULL)) {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableRedundantCheckOnNonNull(local, expression);
              }
            } else {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableNonNullComparedToNull(local, expression);
              }
            }
            continue;
          }
          if (flowInfo.isDefinitelyNull(local)) {
            this.nullReferences[i] = null;
            if (this.nullCheckTypes[i] == (CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NULL)) {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableRedundantCheckOnNull(local, expression);
              }
            } else {
              if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                scope.problemReporter().localVariableNullComparedToNonNull(local, expression);
              }
            }
            continue;
          }
          break;
        case CAN_ONLY_NULL | IN_COMPARISON_NULL:
        case CAN_ONLY_NULL | IN_COMPARISON_NON_NULL:
        case CAN_ONLY_NULL | IN_ASSIGNMENT:
        case CAN_ONLY_NULL | IN_INSTANCEOF:
          if (flowInfo.isDefinitelyNull(local)) {
            this.nullReferences[i] = null;
            switch(this.nullCheckTypes[i] & CONTEXT_MASK) {
              case FlowContext.IN_COMPARISON_NULL:
                if (((this.nullCheckTypes[i] & CHECK_MASK) == CAN_ONLY_NULL) && (expression.implicitConversion & TypeIds.UNBOXING) != 0) { // check for auto-unboxing first and report appropriate warning
                  scope.problemReporter().localVariableNullReference(local, expression);
                  continue;
                }
                if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                  scope.problemReporter().localVariableRedundantCheckOnNull(local, expression);
                }
                continue;
              case FlowContext.IN_COMPARISON_NON_NULL:
                if (((this.nullCheckTypes[i] & CHECK_MASK) == CAN_ONLY_NULL) && (expression.implicitConversion & TypeIds.UNBOXING) != 0) { // check for auto-unboxing first and report appropriate warning
                  scope.problemReporter().localVariableNullReference(local, expression);
                  continue;
                }
                if ((this.tagBits & FlowContext.HIDE_NULL_COMPARISON_WARNING) == 0) {
                  scope.problemReporter().localVariableNullComparedToNonNull(local, expression);
                }
                continue;
              case FlowContext.IN_ASSIGNMENT:
                scope.problemReporter().localVariableRedundantNullAssignment(local, expression);
                continue;
              case FlowContext.IN_INSTANCEOF:
                scope.problemReporter().localVariableNullInstanceof(local, expression);
                continue;
            }
          } else if (flowInfo.isPotentiallyNull(local)) {
            switch(this.nullCheckTypes[i] & CONTEXT_MASK) {
              case FlowContext.IN_COMPARISON_NULL:
                this.nullReferences[i] = null;
                if (((this.nullCheckTypes[i] & CHECK_MASK) == CAN_ONLY_NULL) && (expression.implicitConversion & TypeIds.UNBOXING) != 0) { // check for auto-unboxing first and report appropriate warning
                  scope.problemReporter().localVariablePotentialNullReference(local, expression);
                  continue;
                }
                break;
              case FlowContext.IN_COMPARISON_NON_NULL:
                this.nullReferences[i] = null;
                if (((this.nullCheckTypes[i] & CHECK_MASK) == CAN_ONLY_NULL) && (expression.implicitConversion & TypeIds.UNBOXING) != 0) { // check for auto-unboxing first and report appropriate warning
                  scope.problemReporter().localVariablePotentialNullReference(local, expression);
                  continue;
                }
                break;
            }
          } 
          break;
        case MAY_NULL:
          if (flowInfo.isDefinitelyNull(local)) {
            this.nullReferences[i] = null;
            scope.problemReporter().localVariableNullReference(local, expression);
            continue;
          }
          break;
        default:
          // never happens
      }
      this.parent.recordUsingNullReference(scope, local, expression,
          this.nullCheckTypes[i], flowInfo);
    }
  }
  else {
    // check inconsistent null checks on outermost looping context
    for (int i = 0; i < this.nullCount; i++) {
      Expression expression = this.nullReferences[i];
      // final local variable
      LocalVariableBinding local = this.nullLocals[i];
      switch (this.nullCheckTypes[i]) {
        case CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NULL:
        case CAN_ONLY_NULL_NON_NULL | IN_COMPARISON_NON_NULL:
          if (flowInfo.isDefinitelyNonNull(local)) {
            this.nullReferences[i] = null;
View Full Code Here
130
131
132
133
134
135
136
137
138
139
140
    if (!isField()) {
      ASTNode node = this.resolver.findDeclaringNode(this);
      while (true) {
        if (node == null) {
          if (this.binding instanceof LocalVariableBinding) {
            LocalVariableBinding localVariableBinding = (LocalVariableBinding) this.binding;
            BlockScope blockScope = localVariableBinding.declaringScope;
            if (blockScope != null) {
              ReferenceContext referenceContext = blockScope.referenceContext();
              if (referenceContext instanceof Initializer) {
                return null;
View Full Code Here
279
280
281
282
283
284
285
286
287
288
289
    }
    int sourceEnd = sourceStart+sourceLength-1;
    char[] typeSig = this.binding.type.genericTypeSignature();
    JavaElement parent = null;
    IMethodBinding declaringMethod = getDeclaringMethod();
    final LocalVariableBinding localVariableBinding = (LocalVariableBinding) this.binding;
    if (declaringMethod == null) {
      ReferenceContext referenceContext = localVariableBinding.declaringScope.referenceContext();
      if (referenceContext instanceof TypeDeclaration){
        // Local variable is declared inside an initializer
        TypeDeclaration typeDeclaration = (TypeDeclaration) referenceContext;
View Full Code Here
85
86
87
88
89
90
91
92
93
94
95
        currentScope.resetEnclosingMethodStaticFlag();
      }
      break;
    case Binding.LOCAL :
      // first binding is a local variable
      LocalVariableBinding localBinding;
      if (!flowInfo
        .isDefinitelyAssigned(localBinding = (LocalVariableBinding) this.binding)) {
        currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
      }
      if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) == 0)  {
View Full Code Here
193
194
195
196
197
198
199
200
201
202
203
      if (!fieldBinding.isStatic()) {
        currentScope.resetEnclosingMethodStaticFlag();
      }
      break;
    case Binding.LOCAL : // reading a local variable
      LocalVariableBinding localBinding;
      if (!flowInfo.isDefinitelyAssigned(localBinding = (LocalVariableBinding) this.binding)) {
        currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
      }
      if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) == 0) {
        localBinding.useFlag = LocalVariableBinding.USED;
View Full Code Here
225
226
227
228
229
230
231
232
233
234
235
public void checkNPE(BlockScope scope, FlowContext flowContext, FlowInfo flowInfo, boolean checkString) {
  // cannot override localVariableBinding because this would project o.m onto o when
  // analyzing assignments
  if ((this.bits & ASTNode.RestrictiveFlagMASK) == Binding.LOCAL) {
    LocalVariableBinding local = (LocalVariableBinding) this.binding;
    if (local != null &&
      (local.type.tagBits & TagBits.IsBaseType) == 0 &&
      (checkString || local.type.id != TypeIds.T_JavaLangString)) {
      if ((this.bits & ASTNode.IsNonNull) == 0) {
        flowContext.recordUsingNullReference(scope, local, this,
View Full Code Here
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
      }
      break;
    case Binding.LOCAL : // reading the first local variable
      lastFieldBinding = null;
      lastGenericCast = null;
      LocalVariableBinding localBinding = (LocalVariableBinding) this.binding;
      lastReceiverType = localBinding.type;
      if (!needValue) break; // no value needed
      // regular local variable read
      Constant localConstant = localBinding.constant();
      if (localConstant != Constant.NotAConstant) {
        codeStream.generateConstant(localConstant, 0);
        // no implicit conversion
      } else {
        // outer local?
View Full Code Here
786
787
788
789
790
791
792
793
794
795
796
  //If inlinable field, forget the access emulation, the code gen will directly target it
  if (((this.bits & ASTNode.DepthMASK) == 0) || (this.constant != Constant.NotAConstant)) {
    return;
  }
  if ((this.bits & ASTNode.RestrictiveFlagMASK) == Binding.LOCAL) {
    LocalVariableBinding localVariableBinding = (LocalVariableBinding) this.binding;
    if (localVariableBinding != null) {
      if ((localVariableBinding.tagBits & TagBits.NotInitialized) != 0) {
        // local was tagged as uninitialized
        return;
      }
View Full Code Here
932
933
934
935
936
937
938
939
940
941
942
943
      case Binding.VARIABLE : //============only variable===========
      case Binding.TYPE | Binding.VARIABLE :
        if (this.binding instanceof LocalVariableBinding) {
          this.bits &= ~ASTNode.RestrictiveFlagMASK; // clear bits
          this.bits |= Binding.LOCAL;
          LocalVariableBinding local = (LocalVariableBinding) this.binding;
          if (!local.isFinal() && ((this.bits & ASTNode.DepthMASK) != 0)) {
            scope.problemReporter().cannotReferToNonFinalOuterLocal((LocalVariableBinding) this.binding, this);
          }
          if (local.type != null && (local.type.tagBits & TagBits.HasMissingType) != 0) {
            // only complain if field reference (for local, its type got flagged already)
            return null;
View Full Code Here
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
        }
        manageSyntheticAccessIfNecessary(currentScope, flowInfo, true /*read-access*/);
        break;
      case Binding.LOCAL : // reading a local variable
        // check if assigning a final blank field
        LocalVariableBinding localBinding;
        if (!flowInfo.isDefinitelyAssigned(localBinding = (LocalVariableBinding) this.binding)) {
          currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
          // we could improve error msg here telling "cannot use compound assignment on final local variable"
        }
        if (localBinding.useFlag != LocalVariableBinding.USED) {
          // https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
          // access from compound assignment does not prevent "unused" warning, unless unboxing is involved:
          if (isReachable && (this.implicitConversion & TypeIds.UNBOXING) != 0) {
            localBinding.useFlag = LocalVariableBinding.USED;
          } else {
            // use values < 0 to count the number of compound uses:
            if (localBinding.useFlag <= LocalVariableBinding.UNUSED)
              localBinding.useFlag--;
          }
        }
    }
  }
  if (assignment.expression != null) {
    flowInfo = assignment.expression.analyseCode(currentScope, flowContext, flowInfo).unconditionalInits();
  }
  switch (this.bits & ASTNode.RestrictiveFlagMASK) {
    case Binding.FIELD : // assigning to a field
      manageSyntheticAccessIfNecessary(currentScope, flowInfo, false /*write-access*/);

      // check if assigning a final field
      FieldBinding fieldBinding = (FieldBinding) this.binding;
      if (fieldBinding.isFinal()) {
        // inside a context where allowed
        if (!isCompound && fieldBinding.isBlankFinal() && currentScope.allowBlankFinalFieldAssignment(fieldBinding)) {
          if (flowInfo.isPotentiallyAssigned(fieldBinding)) {
            currentScope.problemReporter().duplicateInitializationOfBlankFinalField(fieldBinding, this);
          } else {
            flowContext.recordSettingFinal(fieldBinding, this, flowInfo);
          }
          flowInfo.markAsDefinitelyAssigned(fieldBinding);
        } else {
          currentScope.problemReporter().cannotAssignToFinalField(fieldBinding, this);
        }
      }
      if (!fieldBinding.isStatic()) {
        // https://bugs.eclipse.org/bugs/show_bug.cgi?id=318682
        currentScope.resetEnclosingMethodStaticFlag();
      }
      break;
    case Binding.LOCAL : // assigning to a local variable
      LocalVariableBinding localBinding = (LocalVariableBinding) this.binding;
      if (!flowInfo.isDefinitelyAssigned(localBinding)){// for local variable debug attributes
        this.bits |= ASTNode.FirstAssignmentToLocal;
      } else {
        this.bits &= ~ASTNode.FirstAssignmentToLocal;
      }
      if (localBinding.isFinal()) {
        if ((this.bits & ASTNode.DepthMASK) == 0) {
          // tolerate assignment to final local in unreachable code (45674)
          if ((isReachable && isCompound) || !localBinding.isBlankFinal()){
            currentScope.problemReporter().cannotAssignToFinalLocal(localBinding, this);
          } else if (flowInfo.isPotentiallyAssigned(localBinding)) {
            currentScope.problemReporter().duplicateInitializationOfFinalLocal(localBinding, this);
          } else {
            flowContext.recordSettingFinal(localBinding, this, flowInfo);
View Full Code Here
TOP

Related Classes of org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding

  • com.android.tools.lint.EcjParser
  • com.google.gwt.dev.jjs.impl.BuildTypeMap$BuildDeclMapVisitor
  • com.google.gwt.dev.jjs.impl.GenerateJavaAST$JavaASTGenerationVisitor
  • com.google.gwt.dev.jjs.impl.GwtAstBuilder
  • com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor
  • org.eclipse.jdt.core.dom.DefaultBindingResolver
  • org.eclipse.jdt.core.dom.VariableBinding
  • org.eclipse.jdt.internal.codeassist.InternalExtendedCompletionContext
  • org.eclipse.jdt.internal.compiler.apt.model.ElementsImpl
  • org.eclipse.jdt.internal.compiler.ast.ASTNode
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.