public FlowInfo analyseCode(
BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, boolean valueRequired) {
// determine the rank until which we now we do not need any actual value for the field access
int otherBindingsCount = this.otherBindings == null ? 0 : this.otherBindings.length;
boolean needValue = otherBindingsCount == 0 ? valueRequired : !this.otherBindings[0].isStatic();
boolean complyTo14 =
currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4;
switch (this.bits & ASTNode.RestrictiveFlagMASK) {
case Binding.FIELD: // reading a field
break;
case Binding.LOCAL: // reading a local variable
LocalVariableBinding localBinding;
if (!flowInfo.isDefinitelyAssigned(localBinding = (LocalVariableBinding) this.binding)) {
if (localBinding.declaringScope instanceof CompilationUnitScope)
currentScope.problemReporter().uninitializedGlobalVariable(localBinding, this);
else currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
}
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) == 0) {
localBinding.useFlag = LocalVariableBinding.USED;
} else if (localBinding.useFlag == LocalVariableBinding.UNUSED) {
localBinding.useFlag = LocalVariableBinding.FAKE_USED;
}
checkNPE(currentScope, flowContext, flowInfo, true);
}
if (needValue) {
manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
// only for first binding (if value needed only)
}
if (this.otherBindings != null) {
for (int i = 0; i < otherBindingsCount; i++) {
needValue =
i < otherBindingsCount - 1 ? !this.otherBindings[i + 1].isStatic() : valueRequired;
if (needValue || complyTo14) {
TypeBinding lastReceiverType = getGenericCast(i);
if (lastReceiverType == null) {
if (i == 0) {
lastReceiverType = ((VariableBinding) this.binding).type;
} else {
lastReceiverType = this.otherBindings[i - 1].type;
}
}
}
}
}
return flowInfo;
}
public FlowInfo analyseAssignment(
BlockScope currentScope,
FlowContext flowContext,
FlowInfo flowInfo,
Assignment assignment,
boolean isCompound) {
// determine the rank until which we now we do not need any actual value for the field access
int otherBindingsCount = this.otherBindings == null ? 0 : this.otherBindings.length;
boolean needValue = otherBindingsCount == 0 || !this.otherBindings[0].isStatic();
boolean complyTo14 =
currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4;
FieldBinding lastFieldBinding = null;
switch (this.bits & ASTNode.RestrictiveFlagMASK) {
case Binding.FIELD: // reading a field
lastFieldBinding = (FieldBinding) this.binding;
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) {
localBinding.useFlag = LocalVariableBinding.USED;
} else if (localBinding.useFlag == LocalVariableBinding.UNUSED) {
localBinding.useFlag = LocalVariableBinding.FAKE_USED;
}
checkNPE(currentScope, flowContext, flowInfo, true);
}
if (needValue) {
manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
// only for first binding
}
// all intermediate field accesses are read accesses
if (this.otherBindings != null) {
for (int i = 0; i < otherBindingsCount - 1; i++) {
lastFieldBinding = this.otherBindings[i];
needValue = !this.otherBindings[i + 1].isStatic();
}
lastFieldBinding = this.otherBindings[otherBindingsCount - 1];
}
if (isCompound) {
TypeBinding lastReceiverType;
switch (otherBindingsCount) {
case 0:
lastReceiverType = this.actualReceiverType;
break;
case 1:
lastReceiverType = ((VariableBinding) this.binding).type;
break;
default:
lastReceiverType = this.otherBindings[otherBindingsCount - 2].type;
break;
}
}
if (assignment.expression != null) {
flowInfo =
assignment
.expression
.analyseCode(currentScope, flowContext, flowInfo)
.unconditionalInits();
}
// equivalent to valuesRequired[maxOtherBindings]
TypeBinding lastReceiverType;
switch (otherBindingsCount) {
case 0:
lastReceiverType = this.actualReceiverType;
break;
case 1:
lastReceiverType = ((VariableBinding) this.binding).type;
break;
default:
lastReceiverType = this.otherBindings[otherBindingsCount - 2].type;
break;
}
return flowInfo;
}