@Override
public void visitIfStatement(@NotNull GrIfStatement statement) {
super.visitIfStatement(statement);
final GrStatement thenBranch = statement.getThenBranch();
final GrStatement elseBranch = statement.getElseBranch();
if (thenBranch == null || elseBranch == null) {
return;
}
if (EquivalenceChecker.statementsAreEquivalent(thenBranch, elseBranch)) {
registerStatementError(statement);
}
}
@Override
public void visitSwitchStatement(GrSwitchStatement grSwitchStatement) {
super.visitSwitchStatement(grSwitchStatement);
final Set<GrExpression> duplicateExpressions = new HashSet<GrExpression>();
final GrCaseLabel[] labels = collectCaseLabels(grSwitchStatement);
for (int i = 0; i < labels.length; i++) {
final GrCaseLabel label1 = labels[i];
final GrExpression expression1 = getExpressionForCaseLabel(label1);
for (int j = i + 1; j < labels.length; j++) {
final GrCaseLabel label2 = labels[j];
final GrExpression expression2 = getExpressionForCaseLabel(label2);
if (EquivalenceChecker.expressionsAreEquivalent(expression1, expression2)) {
duplicateExpressions.add(expression1);
duplicateExpressions.add(expression2);
}
}
}
for (GrExpression duplicateExpression : duplicateExpressions) {
registerError(duplicateExpression);
}
}
public void visitAssignmentExpression(@NotNull GrAssignmentExpression assignment) {
super.visitAssignmentExpression(assignment);
final IElementType sign = assignment.getOperationTokenType();
if (!sign.equals(GroovyTokenTypes.mASSIGN)) {
return;
}
final GrExpression lhs = assignment.getLValue();
final GrExpression rhs = assignment.getRValue();
if (rhs == null) {
return;
}
if (!(rhs instanceof GrReferenceExpression) || !(lhs instanceof GrReferenceExpression)) {
return;
}
final GrReferenceExpression rhsReference = (GrReferenceExpression) rhs;
final GrReferenceExpression lhsReference = (GrReferenceExpression) lhs;
final GrExpression rhsQualifier = rhsReference.getQualifierExpression();
final GrExpression lhsQualifier = lhsReference.getQualifierExpression();
if (rhsQualifier != null || lhsQualifier != null) {
if (!EquivalenceChecker.expressionsAreEquivalent(rhsQualifier, lhsQualifier)) {
return;
}
}
final String rhsName = rhsReference.getReferenceName();
final String lhsName = lhsReference.getReferenceName();
if (rhsName == null || lhsName == null) {
return;
}
if (!rhsName.equals(lhsName)) {
return;
}
final PsiElement rhsReferent = rhsReference.resolve();
final PsiElement lhsReferent = lhsReference.resolve();
if (rhsReferent == null || lhsReferent == null || !rhsReferent.equals(lhsReferent)) {
return;
}
registerError(assignment);
}
