@Override
public void visitCaseSection(GrCaseSection caseSection) {
for (GrCaseLabel label : caseSection.getCaseLabels()) {
GrExpression value = label.getValue();
if (value != null) {
value.accept(this);
}
}
final GrStatement[] statements = caseSection.getStatements();
// infer 'may be return' position
int i;
for (i = statements.length - 1; i >= 0 && statements[i] instanceof GrBreakStatement; i--) {}
for (int j = 0; j < statements.length; j++) {
GrStatement statement = statements[j];
statement.accept(this);
if (j == i) handlePossibleReturn(statement);
}
if (myHead != null) {
addPendingEdge(caseSection, myHead);
}
}
private static boolean caseClausesAreEquivalent(GrCaseSection clause1, GrCaseSection clause2) {
final GrCaseLabel label1 = clause1.getCaseLabel();
final GrCaseLabel label2 = clause2.getCaseLabel();
if (!expressionsAreEquivalent(label1.getValue(), label2.getValue())) {
return false;
}
final GrStatement[] statements1 = clause1.getStatements();
final GrStatement[] statements2 = clause2.getStatements();
if (statements1.length != statements2.length) {
return false;
}
for (int i = 0; i < statements1.length; i++) {
if (!statementsAreEquivalent(statements1[i], statements2[i])) {
return false;
}
}
return false;
}
@Nullable
private static GrExpression getExpressionForCaseLabel(GrCaseLabel label) {
for (PsiElement child : label.getChildren()) {
if (child instanceof GrExpression) {
return (GrExpression) child;
}
}
return null;
}
@Override
public void visitCaseLabel(GrCaseLabel caseLabel) {
final PsiElement parent = caseLabel.getParent().getParent();
assert parent instanceof GrSwitchStatement : parent + " of class " + parent.getClass();
final GrExpression condition = ((GrSwitchStatement) parent).getCondition();
if (condition == null) return;
final PsiType type = condition.getType();
if (type == null) return;
myResult = new TypeConstraint[] {SubtypeConstraint.create(type)};
}
