package org.eclipse.jdt.internal.compiler.lookup; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved. | |
*/ | |
import org.eclipse.jdt.internal.compiler.ast.*; | |
import org.eclipse.jdt.internal.compiler.util.*; | |
public class MethodBinding extends Binding implements BaseTypes, TypeConstants { | |
public int modifiers; | |
public char[] selector; | |
public TypeBinding returnType; | |
public TypeBinding[] parameters; | |
public ReferenceBinding[] thrownExceptions; | |
public ReferenceBinding declaringClass; | |
char[] signature; | |
protected MethodBinding() { | |
} | |
public MethodBinding(int modifiers, char[] selector, TypeBinding returnType, TypeBinding[] args, ReferenceBinding[] exceptions, ReferenceBinding declaringClass) { | |
this.modifiers = modifiers; | |
this.selector = selector; | |
this.returnType = returnType; | |
this.parameters = (args == null || args.length == 0) ? NoParameters : args; | |
this.thrownExceptions = (exceptions == null || exceptions.length == 0) ? NoExceptions : exceptions; | |
this.declaringClass = declaringClass; | |
// propagate the strictfp & deprecated modifiers | |
if (this.declaringClass != null) { | |
if (this.declaringClass.isStrictfp()) | |
if (!(isNative() || isAbstract())) | |
this.modifiers |= AccStrictfp; | |
if (this.declaringClass.isViewedAsDeprecated() && !isDeprecated()) | |
this.modifiers |= AccDeprecatedImplicitly; | |
} | |
} | |
public MethodBinding(int modifiers, TypeBinding[] args, ReferenceBinding[] exceptions, ReferenceBinding declaringClass) { | |
this(modifiers, ConstructorDeclaration.ConstantPoolName, VoidBinding, args, exceptions, declaringClass); | |
} | |
// special API used to change method declaring class for runtime visibility check | |
public MethodBinding(MethodBinding initialMethodBinding, ReferenceBinding declaringClass) { | |
this.modifiers = initialMethodBinding.modifiers; | |
this.selector = initialMethodBinding.selector; | |
this.returnType = initialMethodBinding.returnType; | |
this.parameters = initialMethodBinding.parameters; | |
this.thrownExceptions = initialMethodBinding.thrownExceptions; | |
this.declaringClass = declaringClass; | |
} | |
/* Answer true if the argument types & the receiver's parameters are equal | |
*/ | |
public final boolean areParametersEqual(MethodBinding method) { | |
TypeBinding[] args = method.parameters; | |
if (parameters == args) | |
return true; | |
int length = parameters.length; | |
if (length != args.length) | |
return false; | |
for (int i = 0; i < length; i++) | |
if (parameters[i] != args[i]) | |
return false; | |
return true; | |
} | |
/* API | |
* Answer the receiver's binding type from Binding.BindingID. | |
*/ | |
public final int bindingType() { | |
return METHOD; | |
} | |
/* Answer true if the receiver is visible to the type provided by the scope. | |
* InvocationSite implements isSuperAccess() to provide additional information | |
* if the receiver is protected. | |
* | |
* NOTE: This method should ONLY be sent if the receiver is a constructor. | |
* | |
* NOTE: Cannot invoke this method with a compilation unit scope. | |
*/ | |
public final boolean canBeSeenBy(InvocationSite invocationSite, Scope scope) { | |
if (isPublic()) return true; | |
SourceTypeBinding invocationType = scope.enclosingSourceType(); | |
if (invocationType == declaringClass) return true; | |
if (isProtected()) { | |
// answer true if the receiver is in the same package as the invocationType | |
if (invocationType.fPackage == declaringClass.fPackage) return true; | |
return invocationSite.isSuperAccess(); | |
} | |
if (isPrivate()) { | |
// answer true if the invocationType and the declaringClass have a common enclosingType | |
// already know they are not the identical type | |
ReferenceBinding outerInvocationType = invocationType; | |
ReferenceBinding temp = outerInvocationType.enclosingType(); | |
while (temp != null) { | |
outerInvocationType = temp; | |
temp = temp.enclosingType(); | |
} | |
ReferenceBinding outerDeclaringClass = declaringClass; | |
temp = outerDeclaringClass.enclosingType(); | |
while (temp != null) { | |
outerDeclaringClass = temp; | |
temp = temp.enclosingType(); | |
} | |
return outerInvocationType == outerDeclaringClass; | |
} | |
// isDefault() | |
return invocationType.fPackage == declaringClass.fPackage; | |
} | |
/* Answer true if the receiver is visible to the type provided by the scope. | |
* InvocationSite implements isSuperAccess() to provide additional information | |
* if the receiver is protected. | |
* | |
* NOTE: Cannot invoke this method with a compilation unit scope. | |
*/ | |
public final boolean canBeSeenBy(TypeBinding receiverType, InvocationSite invocationSite, Scope scope) { | |
if (isPublic()) return true; | |
SourceTypeBinding invocationType = scope.enclosingSourceType(); | |
if (invocationType == declaringClass && invocationType == receiverType) return true; | |
if (isProtected()) { | |
// answer true if the invocationType is the declaringClass or they are in the same package | |
// OR the invocationType is a subclass of the declaringClass | |
// AND the receiverType is the invocationType or its subclass | |
// OR the method is a static method accessed directly through a type | |
if (invocationType == declaringClass) return true; | |
if (invocationType.fPackage == declaringClass.fPackage) return true; | |
if (declaringClass.isSuperclassOf(invocationType)) { | |
if (invocationSite.isSuperAccess()) return true; | |
// receiverType can be an array binding in one case... see if you can change it | |
if (receiverType instanceof ArrayBinding) | |
return false; | |
if (invocationType == receiverType || invocationType.isSuperclassOf((ReferenceBinding) receiverType)) | |
return true; | |
if (isStatic()) | |
return true; // see 1FMEPDL - return invocationSite.isTypeAccess(); | |
} | |
return false; | |
} | |
if (isPrivate()) { | |
// answer true if the receiverType is the declaringClass | |
// AND the invocationType and the declaringClass have a common enclosingType | |
if (receiverType != declaringClass) return false; | |
if (invocationType != declaringClass) { | |
ReferenceBinding outerInvocationType = invocationType; | |
ReferenceBinding temp = outerInvocationType.enclosingType(); | |
while (temp != null) { | |
outerInvocationType = temp; | |
temp = temp.enclosingType(); | |
} | |
ReferenceBinding outerDeclaringClass = declaringClass; | |
temp = outerDeclaringClass.enclosingType(); | |
while (temp != null) { | |
outerDeclaringClass = temp; | |
temp = temp.enclosingType(); | |
} | |
if (outerInvocationType != outerDeclaringClass) return false; | |
} | |
return true; | |
} | |
// isDefault() | |
if (invocationType.fPackage != declaringClass.fPackage) return false; | |
// receiverType can be an array binding in one case... see if you can change it | |
if (receiverType instanceof ArrayBinding) | |
return false; | |
ReferenceBinding type = (ReferenceBinding) receiverType; | |
PackageBinding declaringPackage = declaringClass.fPackage; | |
do { | |
if (declaringClass == type) return true; | |
if (declaringPackage != type.fPackage) return false; | |
} while ((type = type.superclass()) != null); | |
return false; | |
} | |
/* Answer the receiver's constant pool name. | |
* | |
* <init> for constructors | |
* <clinit> for clinit methods | |
* or the source name of the method | |
*/ | |
public final char[] constantPoolName() { | |
return selector; | |
} | |
public final int getAccessFlags() { | |
return modifiers & AccJustFlag; | |
} | |
/* Answer true if the receiver is an abstract method | |
*/ | |
public final boolean isAbstract() { | |
return (modifiers & AccAbstract) != 0; | |
} | |
/* Answer true if the receiver is a constructor | |
*/ | |
public final boolean isConstructor() { | |
return selector == ConstructorDeclaration.ConstantPoolName; | |
} | |
protected boolean isConstructorRelated() { | |
return isConstructor(); | |
} | |
/* Answer true if the receiver has default visibility | |
*/ | |
public final boolean isDefault() { | |
return !isPublic() && !isProtected() && !isPrivate(); | |
} | |
/* Answer true if the receiver is a system generated default abstract method | |
*/ | |
public final boolean isDefaultAbstract() { | |
return (modifiers & AccDefaultAbstract) != 0; | |
} | |
/* Answer true if the receiver is a deprecated method | |
*/ | |
public final boolean isDeprecated() { | |
return (modifiers & AccDeprecated) != 0; | |
} | |
/* Answer true if the receiver is final and cannot be overridden | |
*/ | |
public final boolean isFinal() { | |
return (modifiers & AccFinal) != 0; | |
} | |
/* Answer true if the receiver is a native method | |
*/ | |
public final boolean isNative() { | |
return (modifiers & AccNative) != 0; | |
} | |
/* Answer true if the receiver has private visibility | |
*/ | |
public final boolean isPrivate() { | |
return (modifiers & AccPrivate) != 0; | |
} | |
/* Answer true if the receiver has protected visibility | |
*/ | |
public final boolean isProtected() { | |
return (modifiers & AccProtected) != 0; | |
} | |
/* Answer true if the receiver has public visibility | |
*/ | |
public final boolean isPublic() { | |
return (modifiers & AccPublic) != 0; | |
} | |
/* Answer true if the receiver got requested to clear the private modifier | |
* during private access emulation. | |
*/ | |
public final boolean isRequiredToClearPrivateModifier() { | |
return (modifiers & AccClearPrivateModifier) != 0; | |
} | |
/* Answer true if the receiver is a static method | |
*/ | |
public final boolean isStatic() { | |
return (modifiers & AccStatic) != 0; | |
} | |
/* Answer true if all float operations must adher to IEEE 754 float/double rules | |
*/ | |
public final boolean isStrictfp() { | |
return (modifiers & AccStrictfp) != 0; | |
} | |
/* Answer true if the receiver is a synchronized method | |
*/ | |
public final boolean isSynchronized() { | |
return (modifiers & AccSynchronized) != 0; | |
} | |
/* Answer true if the receiver has public visibility | |
*/ | |
public final boolean isSynthetic() { | |
return (modifiers & AccSynthetic) != 0; | |
} | |
/* Answer true if the receiver's declaring type is deprecated (or any of its enclosing types) | |
*/ | |
public final boolean isViewedAsDeprecated() { | |
return (modifiers & AccDeprecated) != 0 || | |
(modifiers & AccDeprecatedImplicitly) != 0; | |
} | |
public char[] readableName() /* foo(int, Thread) */ { | |
StringBuffer buffer = new StringBuffer(parameters.length + 1 * 20); | |
if (isConstructor()) | |
buffer.append(declaringClass.sourceName()); | |
else | |
buffer.append(selector); | |
buffer.append('('); | |
if (parameters != NoParameters) { | |
for (int i = 0, length = parameters.length; i < length; i++) { | |
if (i > 0) | |
buffer.append(", "/*nonNLS*/); | |
buffer.append(parameters[i].sourceName()); | |
} | |
} | |
buffer.append(')'); | |
return buffer.toString().toCharArray(); | |
} | |
protected final void selector(char[] selector) { | |
this.selector = selector; | |
this.signature = null; | |
} | |
/* Answer the receiver's signature. | |
* | |
* NOTE: This method should only be used during/after code gen. | |
* The signature is cached so if the signature of the return type or any parameter | |
* type changes, the cached state is invalid. | |
*/ | |
public final char[] signature() /* (ILjava/lang/Thread;)Ljava/lang/Object; */ { | |
if (signature != null) | |
return signature; | |
StringBuffer buffer = new StringBuffer(parameters.length + 1 * 20); | |
buffer.append('('); | |
if (isConstructorRelated() && declaringClass.isNestedType()) { | |
// take into account the synthetic argument type signatures as well | |
ReferenceBinding[] syntheticArgumentTypes = declaringClass.syntheticEnclosingInstanceTypes(); | |
int count = syntheticArgumentTypes == null ? 0 : syntheticArgumentTypes.length; | |
for (int i = 0; i < count; i++) | |
buffer.append(syntheticArgumentTypes[i].signature()); | |
SyntheticArgumentBinding[] syntheticArguments = declaringClass.syntheticOuterLocalVariables(); | |
count = syntheticArguments == null ? 0 : syntheticArguments.length; | |
for (int i = 0; i < count; i++) | |
buffer.append(syntheticArguments[i].type.signature()); | |
} | |
if (parameters != NoParameters) | |
for (int i = 0, length = parameters.length; i < length; i++) | |
buffer.append(parameters[i].signature()); | |
buffer.append(')'); | |
buffer.append(returnType.signature()); | |
return signature = buffer.toString().toCharArray(); | |
} | |
public final int sourceEnd() { | |
AbstractMethodDeclaration method = sourceMethod(); | |
if (method == null) | |
return 0; | |
else | |
return method.sourceEnd; | |
} | |
AbstractMethodDeclaration sourceMethod() { | |
SourceTypeBinding sourceType; | |
try { | |
sourceType = (SourceTypeBinding) declaringClass; | |
} catch (ClassCastException e) { | |
return null; | |
} | |
AbstractMethodDeclaration[] methods = sourceType.scope.referenceContext.methods; | |
for (int i = methods.length; --i >= 0;) | |
if (this == methods[i].binding) | |
return methods[i]; | |
return null; | |
} | |
public final int sourceStart() { | |
AbstractMethodDeclaration method = sourceMethod(); | |
if (method == null) | |
return 0; | |
else | |
return method.sourceStart; | |
} | |
/* During private access emulation, the binding can be requested to loose its | |
* private visibility when the class file is dumped. | |
*/ | |
public final void tagForClearingPrivateModifier() { | |
modifiers |= AccClearPrivateModifier; | |
} | |
public String toString() { | |
String s = (returnType != null) ? returnType.debugName() : "NULL TYPE"/*nonNLS*/; | |
s += " "/*nonNLS*/; | |
s += (selector != null) ? new String(selector) : "UNNAMED METHOD"/*nonNLS*/; | |
s += "("/*nonNLS*/; | |
if (parameters != null) { | |
if (parameters != NoParameters) { | |
for (int i = 0, length = parameters.length; i < length; i++) { | |
if (i > 0) | |
s += ", "/*nonNLS*/; | |
s += (parameters[i] != null) ? parameters[i].debugName() : "NULL TYPE"/*nonNLS*/; | |
} | |
} | |
} else { | |
s += "NULL PARAMETERS"/*nonNLS*/; | |
} | |
s += ") "/*nonNLS*/; | |
if (thrownExceptions != null) { | |
if (thrownExceptions != NoExceptions) { | |
s += "throws "/*nonNLS*/; | |
for (int i = 0, length = thrownExceptions.length; i < length; i++) { | |
if (i > 0) | |
s += ", "/*nonNLS*/; | |
s += (thrownExceptions[i] != null) ? thrownExceptions[i].debugName() : "NULL TYPE"/*nonNLS*/; | |
} | |
} | |
} else { | |
s += "NULL THROWN EXCEPTIONS"/*nonNLS*/; | |
} | |
return s; | |
} | |
} |