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KT-1550 Cannot use parenthesized array access expression.

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This commit is contained in:
pTalanov
2012-03-13 23:08:48 +04:00
parent e30a22b778
commit f326359bfe
2 changed files with 49 additions and 19 deletions
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compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/BasicExpressionTypingVisitor.java
+29 -11
View File
@@ -255,7 +255,8 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
else { else {
if (typeChecker.isSubtypeOf(actualType, targetType)) { if (typeChecker.isSubtypeOf(actualType, targetType)) {
context.trace.report(USELESS_CAST.on(expression.getOperationSign())); context.trace.report(USELESS_CAST.on(expression.getOperationSign()));
} else { }
else {
if (isCastErased(actualType, targetType, typeChecker)) { if (isCastErased(actualType, targetType, typeChecker)) {
context.trace.report(Errors.UNCHECKED_CAST.on(expression, actualType, targetType)); context.trace.report(Errors.UNCHECKED_CAST.on(expression, actualType, targetType));
} }
@@ -459,7 +460,9 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
} }
else { else {
// supertypes may be empty when all the supertypes are error types (are not resolved, for example) // supertypes may be empty when all the supertypes are error types (are not resolved, for example)
JetType type = supertypes.isEmpty() ? JetStandardClasses.getAnyType() : supertypes.iterator().next(); JetType type = supertypes.isEmpty()
? JetStandardClasses.getAnyType()
: supertypes.iterator().next();
result = substitutor.substitute(type, Variance.INVARIANT); result = substitutor.substitute(type, Variance.INVARIANT);
} }
} }
@@ -607,7 +610,9 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
temporaryTrace.commit(); temporaryTrace.commit();
return null; return null;
} }
ExpressionTypingContext newContext = receiver.exists() ? context.replaceScope(receiver.getType().getMemberScope()) : context; ExpressionTypingContext newContext = receiver.exists()
? context.replaceScope(receiver.getType().getMemberScope())
: context;
JetType jetType = lookupNamespaceOrClassObject(nameExpression, nameExpression.getReferencedName(), newContext); JetType jetType = lookupNamespaceOrClassObject(nameExpression, nameExpression.getReferencedName(), newContext);
if (jetType == null) { if (jetType == null) {
context.trace.report(UNRESOLVED_REFERENCE.on(nameExpression)); context.trace.report(UNRESOLVED_REFERENCE.on(nameExpression));
@@ -732,7 +737,7 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
private void checkLValue(BindingTrace trace, JetExpression expressionWithParenthesis, boolean canBeThis) { private void checkLValue(BindingTrace trace, JetExpression expressionWithParenthesis, boolean canBeThis) {
JetExpression expression = JetPsiUtil.deparenthesize(expressionWithParenthesis); JetExpression expression = JetPsiUtil.deparenthesize(expressionWithParenthesis);
if (expression instanceof JetArrayAccessExpression) { if (expression instanceof JetArrayAccessExpression) {
checkLValue(trace, ((JetArrayAccessExpression) expressionWithParenthesis).getArrayExpression(), true); checkLValue(trace, ((JetArrayAccessExpression) expression).getArrayExpression(), true);
return; return;
} }
if (canBeThis && expression instanceof JetThisExpression) return; if (canBeThis && expression instanceof JetThisExpression) return;
@@ -781,7 +786,8 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
TypeConstructor intTypeConstructor = standardLibrary.getInt().getTypeConstructor(); TypeConstructor intTypeConstructor = standardLibrary.getInt().getTypeConstructor();
if (constructor.equals(intTypeConstructor)) { if (constructor.equals(intTypeConstructor)) {
result = standardLibrary.getBooleanType(); result = standardLibrary.getBooleanType();
} else { }
else {
context.trace.report(COMPARE_TO_TYPE_MISMATCH.on(operationSign, compareToReturnType)); context.trace.report(COMPARE_TO_TYPE_MISMATCH.on(operationSign, compareToReturnType));
} }
} }
@@ -831,8 +837,12 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
JetType leftType = facade.getType(left, context.replaceScope(context.scope)); JetType leftType = facade.getType(left, context.replaceScope(context.scope));
WritableScopeImpl leftScope = newWritableScopeImpl(context).setDebugName("Left scope of && or ||"); WritableScopeImpl leftScope = newWritableScopeImpl(context).setDebugName("Left scope of && or ||");
DataFlowInfo flowInfoLeft = DataFlowUtils.extractDataFlowInfoFromCondition(left, operationType == JetTokens.ANDAND, leftScope, context); // TODO: This gets computed twice: here and in extractDataFlowInfoFromCondition() for the whole condition DataFlowInfo flowInfoLeft = DataFlowUtils.extractDataFlowInfoFromCondition(left, operationType == JetTokens.ANDAND, leftScope, context); // TODO: This gets computed twice: here and in extractDataFlowInfoFromCondition() for the whole condition
WritableScopeImpl rightScope = operationType == JetTokens.ANDAND ? leftScope : newWritableScopeImpl(context).setDebugName("Right scope of && or ||"); WritableScopeImpl rightScope = operationType == JetTokens.ANDAND
JetType rightType = right == null ? null : facade.getType(right, context.replaceDataFlowInfo(flowInfoLeft).replaceScope(rightScope)); ? leftScope
: newWritableScopeImpl(context).setDebugName("Right scope of && or ||");
JetType rightType = right == null
? null
: facade.getType(right, context.replaceDataFlowInfo(flowInfoLeft).replaceScope(rightScope));
if (leftType != null && !isBoolean(leftType)) { if (leftType != null && !isBoolean(leftType)) {
context.trace.report(TYPE_MISMATCH.on(left, booleanType, leftType)); context.trace.report(TYPE_MISMATCH.on(left, booleanType, leftType));
} }
@@ -843,7 +853,9 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
} }
else if (operationType == JetTokens.ELVIS) { else if (operationType == JetTokens.ELVIS) {
JetType leftType = facade.getType(left, context.replaceScope(context.scope)); JetType leftType = facade.getType(left, context.replaceScope(context.scope));
JetType rightType = right == null ? null : facade.getType(right, contextWithExpectedType.replaceScope(context.scope)); JetType rightType = right == null
? null
: facade.getType(right, contextWithExpectedType.replaceScope(context.scope));
if (leftType != null) { if (leftType != null) {
if (!leftType.isNullable()) { if (!leftType.isNullable()) {
context.trace.report(USELESS_ELVIS.on(left, leftType)); context.trace.report(USELESS_ELVIS.on(left, leftType));
@@ -1025,14 +1037,20 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
ExpressionReceiver receiver = new ExpressionReceiver(arrayAccessExpression.getArrayExpression(), arrayType); ExpressionReceiver receiver = new ExpressionReceiver(arrayAccessExpression.getArrayExpression(), arrayType);
if (!isGet) assert rightHandSide != null; if (!isGet) assert rightHandSide != null;
OverloadResolutionResults<FunctionDescriptor> functionResults = context.resolveCallWithGivenName( OverloadResolutionResults<FunctionDescriptor> functionResults = context.resolveCallWithGivenName(
isGet ? CallMaker.makeArrayGetCall(receiver, arrayAccessExpression) : CallMaker.makeArraySetCall(receiver, arrayAccessExpression, rightHandSide), isGet
? CallMaker.makeArrayGetCall(receiver, arrayAccessExpression)
: CallMaker.makeArraySetCall(receiver, arrayAccessExpression, rightHandSide),
arrayAccessExpression, arrayAccessExpression,
isGet ? "get" : "set"); isGet ? "get" : "set");
if (!functionResults.isSuccess()) { if (!functionResults.isSuccess()) {
traceForResolveResult.report(isGet ? NO_GET_METHOD.on(arrayAccessExpression) : NO_SET_METHOD.on(arrayAccessExpression)); traceForResolveResult.report(isGet
? NO_GET_METHOD.on(arrayAccessExpression)
: NO_SET_METHOD.on(arrayAccessExpression));
return null; return null;
} }
traceForResolveResult.record(isGet ? INDEXED_LVALUE_GET : INDEXED_LVALUE_SET, arrayAccessExpression, functionResults.getResultingCall()); traceForResolveResult.record(isGet
? INDEXED_LVALUE_GET
: INDEXED_LVALUE_SET, arrayAccessExpression, functionResults.getResultingCall());
return functionResults.getResultingDescriptor().getReturnType(); return functionResults.getResultingDescriptor().getReturnType();
} }
} }
compiler/testData/diagnostics/tests/regressions/kt1550.jet
+12
View File
@@ -0,0 +1,12 @@
package foo
import java.util.*
fun main(args : Array<String>)
{
val c = ArrayList<Int>()
c.add(3)
System.out?.println(++(c[0]))
System.out?.println((c[1])--)
System.out?.println(-(c[2]))
}