public static boolean checkInvocationArguments(
BlockScope scope,
Expression receiver,
TypeBinding receiverType,
MethodBinding method,
Expression[] arguments,
TypeBinding[] argumentTypes,
boolean argsContainCast,
InvocationSite invocationSite) {
TypeBinding[] params = method.parameters;
int paramLength = params.length;
boolean isRawMemberInvocation =
!method.isStatic()
&& !receiverType.isUnboundWildcard()
&& method.declaringClass.isRawType()
&& method.hasSubstitutedParameters();
boolean uncheckedBoundCheck =
(method.tagBits & TagBits.HasUncheckedTypeArgumentForBoundCheck) != 0;
MethodBinding rawOriginalGenericMethod = null;
if (!isRawMemberInvocation) {
if (method instanceof ParameterizedGenericMethodBinding) {
ParameterizedGenericMethodBinding paramMethod = (ParameterizedGenericMethodBinding) method;
if (paramMethod.isRaw && method.hasSubstitutedParameters()) {
rawOriginalGenericMethod = method.original();
}
}
}
int invocationStatus = INVOCATION_ARGUMENT_OK;
if (arguments == null) {
if (method.isVarargs()) {
TypeBinding parameterType =
((ArrayBinding) params[paramLength - 1])
.elementsType(); // no element was supplied for vararg parameter
if (!parameterType.isReifiable()) {
scope
.problemReporter()
.unsafeGenericArrayForVarargs(parameterType, (ASTNode) invocationSite);
}
}
} else {
if (method.isVarargs()) {
// 4 possibilities exist for a call to the vararg method foo(int i, long ... value) :
// foo(1), foo(1, 2), foo(1, 2, 3, 4) & foo(1, new long[] {1, 2})
int lastIndex = paramLength - 1;
for (int i = 0; i < lastIndex; i++) {
TypeBinding originalRawParam =
rawOriginalGenericMethod == null ? null : rawOriginalGenericMethod.parameters[i];
invocationStatus |=
checkInvocationArgument(
scope, arguments[i], params[i], argumentTypes[i], originalRawParam);
}
int argLength = arguments.length;
if (lastIndex < argLength) { // vararg argument was provided
TypeBinding parameterType = params[lastIndex];
TypeBinding originalRawParam = null;
if (paramLength != argLength
|| parameterType.dimensions() != argumentTypes[lastIndex].dimensions()) {
parameterType =
((ArrayBinding) parameterType)
.elementsType(); // single element was provided for vararg parameter
if (!parameterType.isReifiable()) {
scope
.problemReporter()
.unsafeGenericArrayForVarargs(parameterType, (ASTNode) invocationSite);
}
originalRawParam =
rawOriginalGenericMethod == null
? null
: ((ArrayBinding) rawOriginalGenericMethod.parameters[lastIndex])
.elementsType();
}
for (int i = lastIndex; i < argLength; i++) {
invocationStatus |=
checkInvocationArgument(
scope, arguments[i], parameterType, argumentTypes[i], originalRawParam);
}
}
if (paramLength == argLength) { // 70056
int varargsIndex = paramLength - 1;
ArrayBinding varargsType = (ArrayBinding) params[varargsIndex];
TypeBinding lastArgType = argumentTypes[varargsIndex];
int dimensions;
if (lastArgType == TypeBinding.NULL) {
if (!(varargsType.leafComponentType().isBaseType() && varargsType.dimensions() == 1))
scope.problemReporter().varargsArgumentNeedCast(method, lastArgType, invocationSite);
} else if (varargsType.dimensions <= (dimensions = lastArgType.dimensions())) {
if (lastArgType.leafComponentType().isBaseType()) {
dimensions--;
}
if (varargsType.dimensions < dimensions) {
scope.problemReporter().varargsArgumentNeedCast(method, lastArgType, invocationSite);
} else if (varargsType.dimensions == dimensions
&& lastArgType != varargsType
&& lastArgType.leafComponentType().erasure()
!= varargsType.leafComponentType.erasure()
&& lastArgType.isCompatibleWith(varargsType.elementsType())
&& lastArgType.isCompatibleWith(varargsType)) {
scope.problemReporter().varargsArgumentNeedCast(method, lastArgType, invocationSite);
}
}
}
} else {
for (int i = 0; i < paramLength; i++) {
TypeBinding originalRawParam =
rawOriginalGenericMethod == null ? null : rawOriginalGenericMethod.parameters[i];
invocationStatus |=
checkInvocationArgument(
scope, arguments[i], params[i], argumentTypes[i], originalRawParam);
}
}
if (argsContainCast) {
CastExpression.checkNeedForArgumentCasts(
scope, receiver, receiverType, method, arguments, argumentTypes, invocationSite);
}
}
if ((invocationStatus & INVOCATION_ARGUMENT_WILDCARD) != 0) {
scope
.problemReporter()
.wildcardInvocation((ASTNode) invocationSite, receiverType, method, argumentTypes);
} else if (!method.isStatic()
&& !receiverType.isUnboundWildcard()
&& method.declaringClass.isRawType()
&& method.hasSubstitutedParameters()) {
scope.problemReporter().unsafeRawInvocation((ASTNode) invocationSite, method);
} else if (rawOriginalGenericMethod != null
|| uncheckedBoundCheck
|| ((invocationStatus & INVOCATION_ARGUMENT_UNCHECKED) != 0
&& method instanceof ParameterizedGenericMethodBinding
/*&& method.returnType != scope.environment().convertToRawType(method.returnType.erasure(), true)*/ )) {
scope
.problemReporter()
.unsafeRawGenericMethodInvocation((ASTNode) invocationSite, method, argumentTypes);
return true;
}
return false;
}
public TypeBinding resolveType(BlockScope scope) {
boolean leftIsCast, rightIsCast;
if ((leftIsCast = this.left instanceof CastExpression) == true)
this.left.bits |= DisableUnnecessaryCastCheck; // will check later on
TypeBinding originalLeftType = this.left.resolveType(scope);
if ((rightIsCast = this.right instanceof CastExpression) == true)
this.right.bits |= DisableUnnecessaryCastCheck; // will check later on
TypeBinding originalRightType = this.right.resolveType(scope);
// always return BooleanBinding
if (originalLeftType == null || originalRightType == null) {
this.constant = Constant.NotAConstant;
return null;
}
// autoboxing support
boolean use15specifics = scope.compilerOptions().sourceLevel >= ClassFileConstants.JDK1_5;
TypeBinding leftType = originalLeftType, rightType = originalRightType;
if (use15specifics) {
if (leftType != TypeBinding.NULL && leftType.isBaseType()) {
if (!rightType.isBaseType()) {
rightType = scope.environment().computeBoxingType(rightType);
}
} else {
if (rightType != TypeBinding.NULL && rightType.isBaseType()) {
leftType = scope.environment().computeBoxingType(leftType);
}
}
}
// both base type
if (leftType.isBaseType() && rightType.isBaseType()) {
int leftTypeID = leftType.id;
int rightTypeID = rightType.id;
// the code is an int
// (cast) left == (cast) right --> result
// 0000 0000 0000 0000 0000
// <<16 <<12 <<8 <<4 <<0
int operatorSignature = OperatorSignatures[EQUAL_EQUAL][(leftTypeID << 4) + rightTypeID];
this.left.computeConversion(
scope,
TypeBinding.wellKnownType(scope, (operatorSignature >>> 16) & 0x0000F),
originalLeftType);
this.right.computeConversion(
scope,
TypeBinding.wellKnownType(scope, (operatorSignature >>> 8) & 0x0000F),
originalRightType);
this.bits |= operatorSignature & 0xF;
if ((operatorSignature & 0x0000F) == T_undefined) {
this.constant = Constant.NotAConstant;
scope.problemReporter().invalidOperator(this, leftType, rightType);
return null;
}
// check need for operand cast
if (leftIsCast || rightIsCast) {
CastExpression.checkNeedForArgumentCasts(
scope,
EQUAL_EQUAL,
operatorSignature,
this.left,
leftType.id,
leftIsCast,
this.right,
rightType.id,
rightIsCast);
}
computeConstant(leftType, rightType);
// check whether comparing identical expressions
Binding leftDirect = Expression.getDirectBinding(this.left);
if (leftDirect != null && leftDirect == Expression.getDirectBinding(this.right)) {
if (leftTypeID != TypeIds.T_double
&& leftTypeID != TypeIds.T_float
&& (!(this.right
instanceof Assignment))) // https://bugs.eclipse.org/bugs/show_bug.cgi?id=281776
scope.problemReporter().comparingIdenticalExpressions(this);
} else if (this.constant != Constant.NotAConstant) {
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=276740
int operator = (this.bits & OperatorMASK) >> OperatorSHIFT;
if ((operator == EQUAL_EQUAL && this.constant == BooleanConstant.fromValue(true))
|| (operator == NOT_EQUAL && this.constant == BooleanConstant.fromValue(false)))
scope.problemReporter().comparingIdenticalExpressions(this);
}
return this.resolvedType = TypeBinding.BOOLEAN;
}
// Object references
// spec 15.20.3
if ((!leftType.isBaseType() || leftType == TypeBinding.NULL) // cannot compare: Object == (int)0
&& (!rightType.isBaseType() || rightType == TypeBinding.NULL)
&& (checkCastTypesCompatibility(scope, leftType, rightType, null)
|| checkCastTypesCompatibility(scope, rightType, leftType, null))) {
// (special case for String)
if ((rightType.id == T_JavaLangString) && (leftType.id == T_JavaLangString)) {
computeConstant(leftType, rightType);
} else {
this.constant = Constant.NotAConstant;
}
TypeBinding objectType = scope.getJavaLangObject();
this.left.computeConversion(scope, objectType, leftType);
this.right.computeConversion(scope, objectType, rightType);
// check need for operand cast
boolean unnecessaryLeftCast = (this.left.bits & UnnecessaryCast) != 0;
boolean unnecessaryRightCast = (this.right.bits & UnnecessaryCast) != 0;
if (unnecessaryLeftCast || unnecessaryRightCast) {
TypeBinding alternateLeftType =
unnecessaryLeftCast ? ((CastExpression) this.left).expression.resolvedType : leftType;
TypeBinding alternateRightType =
unnecessaryRightCast
? ((CastExpression) this.right).expression.resolvedType
: rightType;
if (checkCastTypesCompatibility(scope, alternateLeftType, alternateRightType, null)
|| checkCastTypesCompatibility(scope, alternateRightType, alternateLeftType, null)) {
if (unnecessaryLeftCast)
scope.problemReporter().unnecessaryCast((CastExpression) this.left);
if (unnecessaryRightCast)
scope.problemReporter().unnecessaryCast((CastExpression) this.right);
}
}
// check whether comparing identical expressions
Binding leftDirect = Expression.getDirectBinding(this.left);
if (leftDirect != null && leftDirect == Expression.getDirectBinding(this.right)) {
if (!(this.right instanceof Assignment)) {
scope.problemReporter().comparingIdenticalExpressions(this);
}
}
return this.resolvedType = TypeBinding.BOOLEAN;
}
this.constant = Constant.NotAConstant;
scope.problemReporter().notCompatibleTypesError(this, leftType, rightType);
return null;
}