1 /*******************************************************************************
2 * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Common Public License v0.5
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/cpl-v05.html
9 * IBM Corporation - initial API and implementation
10 ******************************************************************************/
11 package net.sourceforge.phpdt.internal.compiler.lookup;
13 import net.sourceforge.phpdt.internal.compiler.ast.AbstractMethodDeclaration;
14 import net.sourceforge.phpdt.internal.compiler.ast.ConstructorDeclaration;
16 public class MethodBinding extends Binding implements BaseTypes, TypeConstants {
18 public char[] selector;
19 public TypeBinding returnType;
20 public TypeBinding[] parameters;
21 public ReferenceBinding[] thrownExceptions;
22 public ReferenceBinding declaringClass;
25 protected MethodBinding() {
27 public MethodBinding(int modifiers, char[] selector, TypeBinding returnType, TypeBinding[] args, ReferenceBinding[] exceptions, ReferenceBinding declaringClass) {
28 this.modifiers = modifiers;
29 this.selector = selector;
30 this.returnType = returnType;
31 this.parameters = (args == null || args.length == 0) ? NoParameters : args;
32 this.thrownExceptions = (exceptions == null || exceptions.length == 0) ? NoExceptions : exceptions;
33 this.declaringClass = declaringClass;
35 // propagate the strictfp & deprecated modifiers
36 if (this.declaringClass != null) {
37 if (this.declaringClass.isStrictfp())
38 if (!(isNative() || isAbstract()))
39 this.modifiers |= AccStrictfp;
40 if (this.declaringClass.isViewedAsDeprecated() && !isDeprecated())
41 this.modifiers |= AccDeprecatedImplicitly;
44 public MethodBinding(int modifiers, TypeBinding[] args, ReferenceBinding[] exceptions, ReferenceBinding declaringClass) {
45 this(modifiers, ConstructorDeclaration.ConstantPoolName, VoidBinding, args, exceptions, declaringClass);
47 // special API used to change method declaring class for runtime visibility check
48 public MethodBinding(MethodBinding initialMethodBinding, ReferenceBinding declaringClass) {
49 this.modifiers = initialMethodBinding.modifiers;
50 this.selector = initialMethodBinding.selector;
51 this.returnType = initialMethodBinding.returnType;
52 this.parameters = initialMethodBinding.parameters;
53 this.thrownExceptions = initialMethodBinding.thrownExceptions;
54 this.declaringClass = declaringClass;
56 /* Answer true if the argument types & the receiver's parameters are equal
59 public final boolean areParametersEqual(MethodBinding method) {
60 TypeBinding[] args = method.parameters;
61 if (parameters == args)
64 int length = parameters.length;
65 if (length != args.length)
68 for (int i = 0; i < length; i++)
69 if (parameters[i] != args[i])
74 * Answer the receiver's binding type from Binding.BindingID.
77 public final int bindingType() {
80 /* Answer true if the receiver is visible to the type provided by the scope.
81 * InvocationSite implements isSuperAccess() to provide additional information
82 * if the receiver is protected.
84 * NOTE: This method should ONLY be sent if the receiver is a constructor.
86 * NOTE: Cannot invoke this method with a compilation unit scope.
89 public final boolean canBeSeenBy(InvocationSite invocationSite, Scope scope) {
90 if (isPublic()) return true;
92 SourceTypeBinding invocationType = scope.enclosingSourceType();
93 if (invocationType == declaringClass) return true;
96 // answer true if the receiver is in the same package as the invocationType
97 if (invocationType.fPackage == declaringClass.fPackage) return true;
98 return invocationSite.isSuperAccess();
102 // answer true if the invocationType and the declaringClass have a common enclosingType
103 // already know they are not the identical type
104 ReferenceBinding outerInvocationType = invocationType;
105 ReferenceBinding temp = outerInvocationType.enclosingType();
106 while (temp != null) {
107 outerInvocationType = temp;
108 temp = temp.enclosingType();
111 ReferenceBinding outerDeclaringClass = declaringClass;
112 temp = outerDeclaringClass.enclosingType();
113 while (temp != null) {
114 outerDeclaringClass = temp;
115 temp = temp.enclosingType();
117 return outerInvocationType == outerDeclaringClass;
121 return invocationType.fPackage == declaringClass.fPackage;
123 /* Answer true if the receiver is visible to the type provided by the scope.
124 * InvocationSite implements isSuperAccess() to provide additional information
125 * if the receiver is protected.
127 * NOTE: Cannot invoke this method with a compilation unit scope.
129 public final boolean canBeSeenBy(TypeBinding receiverType, InvocationSite invocationSite, Scope scope) {
130 if (isPublic()) return true;
132 SourceTypeBinding invocationType = scope.enclosingSourceType();
133 if (invocationType == declaringClass && invocationType == receiverType) return true;
136 // answer true if the invocationType is the declaringClass or they are in the same package
137 // OR the invocationType is a subclass of the declaringClass
138 // AND the receiverType is the invocationType or its subclass
139 // OR the method is a static method accessed directly through a type
140 // OR previous assertions are true for one of the enclosing type
141 if (invocationType == declaringClass) return true;
142 if (invocationType.fPackage == declaringClass.fPackage) return true;
144 ReferenceBinding currentType = invocationType;
147 if (declaringClass.isSuperclassOf(currentType)) {
148 if (invocationSite.isSuperAccess()){
151 // receiverType can be an array binding in one case... see if you can change it
152 if (receiverType instanceof ArrayBinding){
156 return true; // see 1FMEPDL - return invocationSite.isTypeAccess();
158 if (currentType == receiverType || currentType.isSuperclassOf((ReferenceBinding) receiverType)){
159 if (depth > 0) invocationSite.setDepth(depth);
164 currentType = currentType.enclosingType();
165 } while (currentType != null);
170 // answer true if the receiverType is the declaringClass
171 // AND the invocationType and the declaringClass have a common enclosingType
172 if (receiverType != declaringClass) return false;
174 if (invocationType != declaringClass) {
175 ReferenceBinding outerInvocationType = invocationType;
176 ReferenceBinding temp = outerInvocationType.enclosingType();
177 while (temp != null) {
178 outerInvocationType = temp;
179 temp = temp.enclosingType();
182 ReferenceBinding outerDeclaringClass = declaringClass;
183 temp = outerDeclaringClass.enclosingType();
184 while (temp != null) {
185 outerDeclaringClass = temp;
186 temp = temp.enclosingType();
188 if (outerInvocationType != outerDeclaringClass) return false;
194 if (invocationType.fPackage != declaringClass.fPackage) return false;
196 // receiverType can be an array binding in one case... see if you can change it
197 if (receiverType instanceof ArrayBinding)
199 ReferenceBinding type = (ReferenceBinding) receiverType;
200 PackageBinding declaringPackage = declaringClass.fPackage;
202 if (declaringClass == type) return true;
203 if (declaringPackage != type.fPackage) return false;
204 } while ((type = type.superclass()) != null);
207 /* Answer the receiver's constant pool name.
209 * <init> for constructors
210 * <clinit> for clinit methods
211 * or the source name of the method
214 public final char[] constantPoolName() {
217 public final int getAccessFlags() {
218 return modifiers & AccJustFlag;
220 /* Answer true if the receiver is an abstract method
223 public final boolean isAbstract() {
224 return (modifiers & AccAbstract) != 0;
226 /* Answer true if the receiver is a constructor
229 public final boolean isConstructor() {
230 return selector == ConstructorDeclaration.ConstantPoolName;
232 protected boolean isConstructorRelated() {
233 return isConstructor();
235 /* Answer true if the receiver has default visibility
238 public final boolean isDefault() {
239 return !isPublic() && !isProtected() && !isPrivate();
241 /* Answer true if the receiver is a system generated default abstract method
244 public final boolean isDefaultAbstract() {
245 return (modifiers & AccDefaultAbstract) != 0;
247 /* Answer true if the receiver is a deprecated method
250 public final boolean isDeprecated() {
251 return (modifiers & AccDeprecated) != 0;
253 /* Answer true if the receiver is final and cannot be overridden
256 public final boolean isFinal() {
257 return (modifiers & AccFinal) != 0;
259 /* Answer true if the receiver is a native method
262 public final boolean isNative() {
263 return (modifiers & AccNative) != 0;
265 /* Answer true if the receiver has private visibility
268 public final boolean isPrivate() {
269 return (modifiers & AccPrivate) != 0;
271 /* Answer true if the receiver has protected visibility
274 public final boolean isProtected() {
275 return (modifiers & AccProtected) != 0;
277 /* Answer true if the receiver has public visibility
280 public final boolean isPublic() {
281 return (modifiers & AccPublic) != 0;
283 /* Answer true if the receiver got requested to clear the private modifier
284 * during private access emulation.
287 public final boolean isRequiredToClearPrivateModifier() {
288 return (modifiers & AccClearPrivateModifier) != 0;
290 /* Answer true if the receiver is a static method
293 public final boolean isStatic() {
294 return (modifiers & AccStatic) != 0;
296 /* Answer true if all float operations must adher to IEEE 754 float/double rules
299 public final boolean isStrictfp() {
300 return (modifiers & AccStrictfp) != 0;
302 /* Answer true if the receiver is a synchronized method
305 public final boolean isSynchronized() {
306 return (modifiers & AccSynchronized) != 0;
308 /* Answer true if the receiver has public visibility
311 public final boolean isSynthetic() {
312 return (modifiers & AccSynthetic) != 0;
314 /* Answer true if the receiver's declaring type is deprecated (or any of its enclosing types)
317 public final boolean isViewedAsDeprecated() {
318 return (modifiers & AccDeprecated) != 0 ||
319 (modifiers & AccDeprecatedImplicitly) != 0;
321 public char[] readableName() /* foo(int, Thread) */ {
322 StringBuffer buffer = new StringBuffer(parameters.length + 1 * 20);
324 buffer.append(declaringClass.sourceName());
326 buffer.append(selector);
328 if (parameters != NoParameters) {
329 for (int i = 0, length = parameters.length; i < length; i++) {
331 buffer.append(", "); //$NON-NLS-1$
332 buffer.append(parameters[i].sourceName());
336 return buffer.toString().toCharArray();
338 protected final void selector(char[] selector) {
339 this.selector = selector;
340 this.signature = null;
342 /* Answer the receiver's signature.
344 * NOTE: This method should only be used during/after code gen.
345 * The signature is cached so if the signature of the return type or any parameter
346 * type changes, the cached state is invalid.
349 public final char[] signature() /* (ILjava/lang/Thread;)Ljava/lang/Object; */ {
350 if (signature != null)
353 StringBuffer buffer = new StringBuffer(parameters.length + 1 * 20);
355 if (isConstructorRelated() && declaringClass.isNestedType()) {
356 // take into account the synthetic argument type signatures as well
357 ReferenceBinding[] syntheticArgumentTypes = declaringClass.syntheticEnclosingInstanceTypes();
358 int count = syntheticArgumentTypes == null ? 0 : syntheticArgumentTypes.length;
359 for (int i = 0; i < count; i++)
360 buffer.append(syntheticArgumentTypes[i].signature());
361 SyntheticArgumentBinding[] syntheticArguments = declaringClass.syntheticOuterLocalVariables();
362 count = syntheticArguments == null ? 0 : syntheticArguments.length;
363 for (int i = 0; i < count; i++)
364 buffer.append(syntheticArguments[i].type.signature());
366 if (parameters != NoParameters)
367 for (int i = 0, length = parameters.length; i < length; i++)
368 buffer.append(parameters[i].signature());
370 buffer.append(returnType.signature());
371 return signature = buffer.toString().toCharArray();
373 public final int sourceEnd() {
374 AbstractMethodDeclaration method = sourceMethod();
378 return method.sourceEnd;
380 AbstractMethodDeclaration sourceMethod() {
381 SourceTypeBinding sourceType;
383 sourceType = (SourceTypeBinding) declaringClass;
384 } catch (ClassCastException e) {
388 AbstractMethodDeclaration[] methods = sourceType.scope.referenceContext.methods;
389 for (int i = methods.length; --i >= 0;)
390 if (this == methods[i].binding)
394 public final int sourceStart() {
395 AbstractMethodDeclaration method = sourceMethod();
399 return method.sourceStart;
401 /* During private access emulation, the binding can be requested to loose its
402 * private visibility when the class file is dumped.
405 public final void tagForClearingPrivateModifier() {
406 modifiers |= AccClearPrivateModifier;
408 public String toString() {
409 String s = (returnType != null) ? returnType.debugName() : "NULL TYPE"; //$NON-NLS-1$
410 s += " "; //$NON-NLS-1$
411 s += (selector != null) ? new String(selector) : "UNNAMED METHOD"; //$NON-NLS-1$
413 s += "("; //$NON-NLS-1$
414 if (parameters != null) {
415 if (parameters != NoParameters) {
416 for (int i = 0, length = parameters.length; i < length; i++) {
418 s += ", "; //$NON-NLS-1$
419 s += (parameters[i] != null) ? parameters[i].debugName() : "NULL TYPE"; //$NON-NLS-1$
423 s += "NULL PARAMETERS"; //$NON-NLS-1$
425 s += ") "; //$NON-NLS-1$
427 if (thrownExceptions != null) {
428 if (thrownExceptions != NoExceptions) {
429 s += "throws "; //$NON-NLS-1$
430 for (int i = 0, length = thrownExceptions.length; i < length; i++) {
432 s += ", "; //$NON-NLS-1$
433 s += (thrownExceptions[i] != null) ? thrownExceptions[i].debugName() : "NULL TYPE"; //$NON-NLS-1$
437 s += "NULL THROWN EXCEPTIONS"; //$NON-NLS-1$