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generatePatternMatch() returns StackValue for result

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This commit is contained in:
Dmitry Jemerov
2011-07-06 13:49:52 +02:00
parent 71f521c05d
commit 3fe728dff6
1 changed files with 12 additions and 8 deletions
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idea/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
+12 -8
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@@ -1621,20 +1621,21 @@ public class ExpressionCodegen extends JetVisitor {
@Override
public void visitIsExpression(final JetIsExpression expression) {
generatePatternMatch(expression.getPattern(), expression.isNegated(),
StackValue.expression(OBJECT_TYPE, expression.getLeftHandSide(), this));
final StackValue match = StackValue.expression(OBJECT_TYPE, expression.getLeftHandSide(), this);
StackValue result = generatePatternMatch(expression.getPattern(), expression.isNegated(), match);
myStack.push(result);
}
private void generatePatternMatch(JetPattern pattern, boolean negated, StackValue expressionToMatch) {
private StackValue generatePatternMatch(JetPattern pattern, boolean negated, StackValue expressionToMatch) {
if (pattern instanceof JetTypePattern) {
JetTypeReference typeReference = ((JetTypePattern) pattern).getTypeReference();
JetType jetType = bindingContext.resolveTypeReference(typeReference);
generateInstanceOf(expressionToMatch, jetType, false);
StackValue value = StackValue.onStack(Type.BOOLEAN_TYPE);
myStack.push(negated ? StackValue.not(value) : value);
return negated ? StackValue.not(value) : value;
}
else if (pattern instanceof JetWildcardPattern) {
myStack.push(StackValue.constant(!negated, Type.BOOLEAN_TYPE));
return StackValue.constant(!negated, Type.BOOLEAN_TYPE);
}
else {
throw new UnsupportedOperationException("Unsupported pattern type: " + pattern);
@@ -1731,29 +1732,32 @@ public class ExpressionCodegen extends JetVisitor {
nextEntry = new Label();
if (!whenEntry.isElse()) {
JetWhenCondition condition = whenEntry.getCondition();
StackValue conditionValue;
if (condition instanceof JetWhenConditionWithExpression) {
v.load(subjectLocal, subjectType);
JetExpression condExpression = ((JetWhenConditionWithExpression) condition).getExpression();
Type condType = expressionType(condExpression);
gen(condExpression, condType);
generateEqualsForExpressionsOnStack(JetTokens.EQEQ, subjectType, condType);
conditionValue = myStack.pop();
}
else if (condition instanceof JetWhenConditionInRange) {
JetExpression range = ((JetWhenConditionInRange) condition).getRangeExpression();
gen(range, RANGE_TYPE);
new StackValue.Local(subjectLocal, subjectType).put(INTEGER_TYPE, v);
v.invokeinterface(CLASS_RANGE, "contains", "(Ljava/lang/Comparable;)Z");
myStack.push(new StackValue.OnStack(Type.BOOLEAN_TYPE));
conditionValue = new StackValue.OnStack(Type.BOOLEAN_TYPE);
}
else if (condition instanceof JetWhenConditionIsPattern) {
JetWhenConditionIsPattern patternCondition = (JetWhenConditionIsPattern) condition;
JetPattern pattern = patternCondition.getPattern();
generatePatternMatch(pattern, patternCondition.isNegated(), StackValue.local(subjectLocal, subjectType));
conditionValue = generatePatternMatch(pattern, patternCondition.isNegated(),
StackValue.local(subjectLocal, subjectType));
}
else {
throw new UnsupportedOperationException("unsupported kind of when condition");
}
myStack.pop().condJump(nextEntry, true, v);
conditionValue.condJump(nextEntry, true, v);
}
else {
hasElse = true;