private MethodBinding checkAndResolveMethodRef(
SourceInfo errorInfo,
ReferenceBinding clazz,
JsniRef jsniRef,
boolean hasQualifier,
boolean isLvalue) {
assert jsniRef.isMethod();
List<MethodBinding> targets = getMatchingMethods(clazz, jsniRef);
if (targets.size() > 1) {
emitError(
ERR_AMBIGUOUS_WILDCARD_MATCH,
errorInfo,
jsniRef,
JdtUtil.formatBinding(targets.get(0)),
JdtUtil.formatBinding(targets.get(1)));
return null;
} else if (targets.isEmpty()) {
emitError(ERR_UNABLE_TO_RESOLVE_METHOD, errorInfo, jsniRef);
return null;
}
MethodBinding target = targets.get(0);
resolveJsniRef(jsniRef, target);
if (target.isDeprecated()
&& !isEnclosingClass(method.binding.declaringClass, target.declaringClass)) {
emitWarning("deprecation", WARN_DEPRECATED_METHOD, errorInfo, jsniRef);
}
if (isLvalue) {
emitError(ERR_ILLEGAL_ASSIGNMENT_TO_METHOD, errorInfo, jsniRef);
}
boolean needsQualifer = !target.isStatic() && !target.isConstructor();
if (!needsQualifer && hasQualifier) {
emitError(ERR_UNNECESSARY_QUALIFIER_STATIC_METHOD, errorInfo, jsniRef);
} else if (needsQualifer && !hasQualifier) {
emitError(ERR_MISSING_QUALIFIER_INSTANCE_METHOD, errorInfo, jsniRef);
}
if (hasUnsafeLongsAnnotation) {
return target;
}
if (containsLong(target.returnType)) {
emitError(ERR_ILLEGAL_RETURN_TYPE, errorInfo, jsniRef, typeString(target.returnType));
}
if (target.parameters != null) {
int i = 0;
for (TypeBinding paramType : target.parameters) {
++i;
if (containsLong(paramType)) {
// It would be nice to print the parameter name, but how to find it?
emitError(ERR_ILLEGAL_PARAMETER, errorInfo, jsniRef, i, typeString(paramType));
}
}
}
return target;
}
/**
* This method is used by {@link
* org.eclipse.objectteams.otdt.internal.core.compiler.bytecode.CallinMethodMappingsAttribute
* CallinMethodMappingsAttribute} for decoding a mapping from its bytecode attribute.
*
* @param method
* @return the bytecode level signature of the given method (yet retrenched)
*/
public static char[] signature(MethodBinding method, WeavingScheme weavingScheme) {
StringBuffer buffer = new StringBuffer();
buffer.append('(');
// synthetic args for static role method?
MethodBinding orig =
method.copyInheritanceSrc != null
? method.copyInheritanceSrc
: method; // normalize to copyInhSrc so reading a callin-attr. from bytes can more
// easily find the method
if (weavingScheme == WeavingScheme.OTDRE && orig.declaringClass.isRole() && orig.isStatic()) {
buffer.append('I');
buffer.append(String.valueOf(orig.declaringClass.enclosingType().signature()));
}
// manual retrenching?
boolean shouldRetrench = weavingScheme == WeavingScheme.OTRE && method.isCallin();
int offset = shouldRetrench ? MethodSignatureEnhancer.getEnhancingArgLen(weavingScheme) : 0;
int paramLen = method.parameters.length;
for (int i = offset; i < paramLen; i++) {
// 'weaken' to that erasure that was used in the tsuper version:
TypeBinding targetParameter = method.getCodeGenType(i);
buffer.append(targetParameter.signature());
}
buffer.append(')');
TypeBinding sourceReturnType =
shouldRetrench ? MethodModel.getReturnType(method) : method.returnType;
// 'weaken' to that erasure that was used in the tsuper version:
MethodBinding tsuperOriginal =
(method.tagBits & TagBits.IsCopyOfParameterized) != 0
? method.copyInheritanceSrc.original()
: null;
TypeBinding returnType =
(tsuperOriginal != null
&& tsuperOriginal.returnType.isTypeVariable()
&& !sourceReturnType.isTypeVariable())
? tsuperOriginal.returnType
: sourceReturnType;
if (returnType.isTypeVariable() && method instanceof ParameterizedGenericMethodBinding)
returnType =
((ParameterizedGenericMethodBinding) method)
.reverseSubstitute((TypeVariableBinding) returnType);
buffer.append(returnType.erasure().signature());
int nameLength = buffer.length();
char[] signature = new char[nameLength];
buffer.getChars(0, nameLength, signature, 0);
return signature;
}
private void searchVisibleLocalMethods(
MethodBinding[] methods,
ReferenceBinding receiverType,
Scope scope,
InvocationSite invocationSite,
Scope invocationScope,
boolean onlyStaticMethods,
ObjectVector methodsFound) {
ObjectVector newMethodsFound = new ObjectVector();
// Inherited methods which are hidden by subclasses are filtered out
// No visibility checks can be performed without the scope & invocationSite
next:
for (int f = methods.length; --f >= 0; ) {
MethodBinding method = methods[f];
if (method.isSynthetic()) continue next;
if (method.isDefaultAbstract()) continue next;
if (method.isConstructor()) continue next;
if (onlyStaticMethods && !method.isStatic()) continue next;
if (!method.canBeSeenBy(receiverType, invocationSite, scope)) continue next;
for (int i = methodsFound.size; --i >= 0; ) {
MethodBinding otherMethod = (MethodBinding) methodsFound.elementAt(i);
if (method == otherMethod) continue next;
if (CharOperation.equals(method.selector, otherMethod.selector, true)) {
if (this.lookupEnvironment.methodVerifier().isMethodSubsignature(otherMethod, method)) {
continue next;
}
}
}
newMethodsFound.add(method);
}
methodsFound.addAll(newMethodsFound);
}
public int resolveLevel(Binding binding) {
if (binding == null) return INACCURATE_MATCH;
if (!(binding instanceof MethodBinding)) return IMPOSSIBLE_MATCH;
MethodBinding method = (MethodBinding) binding;
boolean skipVerif = this.pattern.findDeclarations && this.mayBeGeneric;
int methodLevel = matchMethod(method, skipVerif);
if (methodLevel == IMPOSSIBLE_MATCH) {
if (method != method.original()) methodLevel = matchMethod(method.original(), skipVerif);
if (methodLevel == IMPOSSIBLE_MATCH) {
return IMPOSSIBLE_MATCH;
} else {
method = method.original();
}
}
// declaring type
char[] qualifiedPattern =
qualifiedPattern(this.pattern.declaringSimpleName, this.pattern.declaringQualification);
if (qualifiedPattern == null) return methodLevel; // since any declaring class will do
boolean subType = !method.isStatic() && !method.isPrivate();
if (subType
&& this.pattern.declaringQualification != null
&& method.declaringClass != null
&& method.declaringClass.fPackage != null) {
subType =
CharOperation.compareWith(
this.pattern.declaringQualification,
method.declaringClass.fPackage.shortReadableName())
== 0;
}
int declaringLevel =
subType
? resolveLevelAsSubtype(qualifiedPattern, method.declaringClass, null)
: resolveLevelForType(qualifiedPattern, method.declaringClass);
return methodLevel > declaringLevel ? declaringLevel : methodLevel; // return the weaker match
}
private static List<MethodBinding> getApplicableExtensionMethodsDefinedInProvider(
EclipseNode typeNode,
ReferenceBinding extensionMethodProviderBinding,
TypeBinding receiverType) {
List<MethodBinding> extensionMethods = new ArrayList<MethodBinding>();
CompilationUnitScope cuScope = ((CompilationUnitDeclaration) typeNode.top().get()).scope;
for (MethodBinding method : extensionMethodProviderBinding.methods()) {
if (!method.isStatic()) continue;
if (!method.isPublic()) continue;
if (method.parameters == null || method.parameters.length == 0) continue;
TypeBinding firstArgType = method.parameters[0];
if (receiverType.isProvablyDistinct(firstArgType)
&& !receiverType.isCompatibleWith(firstArgType.erasure())) continue;
TypeBinding[] argumentTypes =
Arrays.copyOfRange(method.parameters, 1, method.parameters.length);
if ((receiverType instanceof ReferenceBinding)
&& ((ReferenceBinding) receiverType)
.getExactMethod(method.selector, argumentTypes, cuScope)
!= null) continue;
extensionMethods.add(method);
}
return extensionMethods;
}
/** Returns whether the code gen will use an invoke virtual for this message send or not. */
protected boolean isVirtualInvoke(MethodBinding method, MessageSend messageSend) {
return !method.isStatic() && !method.isPrivate() && !messageSend.isSuperAccess();
}
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;
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
MethodBinding codegenBinding = this.binding.original();
if (codegenBinding.canBeSeenBy(this.actualReceiverType, this, currentScope)) {
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// outer method can be reached through emulation
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & DepthMASK) >> DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
if (path == null) {
// emulation was not possible (should not happen per construction)
currentScope.problemReporter().needImplementation(this);
} else {
codeStream.generateOuterAccess(path, this, targetType, currentScope);
}
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
// actual message invocation
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else {
if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(
Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
}
} else {
codeStream.generateEmulationForMethod(currentScope, codegenBinding);
// generate receiver/enclosing instance access
boolean isStatic = codegenBinding.isStatic();
// outer access ?
if (!isStatic && ((this.bits & DepthMASK) != 0)) {
// not supported yet
currentScope.problemReporter().needImplementation(this);
} else {
this.receiver.generateCode(currentScope, codeStream, !isStatic);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
if (isStatic) {
// we need an object on the stack which is ignored for the method invocation
codeStream.aconst_null();
}
// generate arguments
if (this.arguments != null) {
int argsLength = this.arguments.length;
codeStream.generateInlinedValue(argsLength);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
codeStream.dup();
for (int i = 0; i < argsLength; i++) {
codeStream.generateInlinedValue(i);
this.arguments[i].generateCode(currentScope, codeStream, true);
TypeBinding parameterBinding = codegenBinding.parameters[i];
if (parameterBinding.isBaseType() && parameterBinding != TypeBinding.NULL) {
codeStream.generateBoxingConversion(codegenBinding.parameters[i].id);
}
codeStream.aastore();
if (i < argsLength - 1) {
codeStream.dup();
}
}
} else {
codeStream.generateInlinedValue(0);
codeStream.newArray(
currentScope.createArrayType(
currentScope.getType(TypeConstants.JAVA_LANG_OBJECT, 3), 1));
}
codeStream.invokeJavaLangReflectMethodInvoke();
// convert the return value to the appropriate type for primitive types
if (codegenBinding.returnType.isBaseType()) {
int typeID = codegenBinding.returnType.id;
if (typeID == T_void) {
// remove the null from the stack
codeStream.pop();
}
codeStream.checkcast(typeID);
codeStream.getBaseTypeValue(typeID);
} else {
codeStream.checkcast(codegenBinding.returnType);
}
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
/**
* MessageSend code generation
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
* @param valueRequired boolean
*/
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
int pc = codeStream.position;
// generate receiver/enclosing instance access
MethodBinding codegenBinding =
this.binding instanceof PolymorphicMethodBinding ? this.binding : this.binding.original();
boolean isStatic = codegenBinding.isStatic();
if (isStatic) {
this.receiver.generateCode(currentScope, codeStream, false);
} else if ((this.bits & ASTNode.DepthMASK) != 0
&& this.receiver.isImplicitThis()) { // outer access ?
// outer method can be reached through emulation if implicit access
ReferenceBinding targetType =
currentScope
.enclosingSourceType()
.enclosingTypeAt((this.bits & ASTNode.DepthMASK) >> ASTNode.DepthSHIFT);
Object[] path =
currentScope.getEmulationPath(
targetType, true /*only exact match*/, false /*consider enclosing arg*/);
codeStream.generateOuterAccess(path, this, targetType, currentScope);
} else {
this.receiver.generateCode(currentScope, codeStream, true);
if ((this.bits & NeedReceiverGenericCast) != 0) {
codeStream.checkcast(this.actualReceiverType);
}
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
// generate arguments
generateArguments(this.binding, this.arguments, currentScope, codeStream);
pc = codeStream.position;
// actual message invocation
if (this.syntheticAccessor == null) {
TypeBinding constantPoolDeclaringClass =
CodeStream.getConstantPoolDeclaringClass(
currentScope,
codegenBinding,
this.actualReceiverType,
this.receiver.isImplicitThis());
if (isStatic) {
codeStream.invoke(Opcodes.OPC_invokestatic, codegenBinding, constantPoolDeclaringClass);
} else if ((this.receiver.isSuper()) || codegenBinding.isPrivate()) {
codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, constantPoolDeclaringClass);
} else if (constantPoolDeclaringClass.isInterface()) { // interface or annotation type
codeStream.invoke(Opcodes.OPC_invokeinterface, codegenBinding, constantPoolDeclaringClass);
} else {
codeStream.invoke(Opcodes.OPC_invokevirtual, codegenBinding, constantPoolDeclaringClass);
}
} else {
codeStream.invoke(
Opcodes.OPC_invokestatic, this.syntheticAccessor, null /* default declaringClass */);
}
// required cast must occur even if no value is required
if (this.valueCast != null) codeStream.checkcast(this.valueCast);
if (valueRequired) {
// implicit conversion if necessary
codeStream.generateImplicitConversion(this.implicitConversion);
} else {
boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0;
// conversion only generated if unboxing
if (isUnboxing) codeStream.generateImplicitConversion(this.implicitConversion);
switch (isUnboxing ? postConversionType(currentScope).id : codegenBinding.returnType.id) {
case T_long:
case T_double:
codeStream.pop2();
break;
case T_void:
break;
default:
codeStream.pop();
}
}
codeStream.recordPositionsFrom(
pc, (int) (this.nameSourcePosition >>> 32)); // highlight selector
}
