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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during
compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based
@AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step.
This library is a superset of AspectJ weaver and hence also of AspectJ runtime.
/*******************************************************************************
* Copyright (c) 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.aspectj.org.eclipse.jdt.internal.core.search.matching;
import org.aspectj.org.eclipse.jdt.core.compiler.CharOperation;
import org.aspectj.org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.aspectj.org.eclipse.jdt.core.search.SearchPattern;
import org.aspectj.org.eclipse.jdt.internal.compiler.ExtraFlags;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.aspectj.org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
public class MethodDeclarationPattern extends MethodPattern {
public int extraFlags;
public int declaringTypeModifiers;
public int modifiers;
public char[] signature;
public char[][] parameterTypes;
public char[][] parameterNames;
public char[] fusedDeclaringQualifier = null; // TODO: do we need this; cleanup?
/**
* Method Declaration entries are encoded as described
*
* Binary Method Declaration for class
* MethodName '/' Arity '/' DeclaringQualifier '/' TypeName '/' TypeModifers '/' PackageName '/' Signature '/' ParameterNamesopt '/' Modifiers '/' returnType
* Source method for class
* MethodName '/' Arity '/' DeclaringQualifier '/' TypeName '/' TypeModifers '/' PackageName '/' ParameterTypes '/' ParameterNamesopt '/' Modifiers '/' returnType
* TypeModifiers contains some encoded extra information
* {@link ExtraFlags#IsMemberType}
* {@link ExtraFlags#HasNonPrivateStaticMemberTypes}
* {@link ExtraFlags#ParameterTypesStoredAsSignature}
*/
public static char[] createDeclarationIndexKey(
char[] typeName,
char[] declaringQualification,
char[] methodName,
int argCount,
char[] signature,
char[][] parameterTypes,
char[][] parameterNames,
char[] returnType,
int modifiers,
char[] packageName,
int typeModifiers,
int extraFlags) {
char[] countChars;
char[] parameterTypesChars = null;
char[] parameterNamesChars = null;
countChars = argCount < 10 ? new char[] {COUNTS[argCount][1]}: String.valueOf(argCount).toCharArray();
if (argCount > 0) {
if (signature == null) {
if (parameterTypes != null && parameterTypes.length == argCount) {
parameterTypesChars = CharOperation.concatWith(parameterTypes, PARAMETER_SEPARATOR);
}
} else {
extraFlags |= ExtraFlags.ParameterTypesStoredAsSignature;
}
if (parameterNames != null && parameterNames.length == argCount) {
parameterNamesChars = CharOperation.concatWith(parameterNames, PARAMETER_SEPARATOR);
}
}
char[] returnTypeChars = returnType == null ? CharOperation.NO_CHAR : getTypeErasure(returnType);
int typeModifiersWithExtraFlags = typeModifiers | encodeExtraFlags(extraFlags);
int entryIndex = 0;
int numEntries = 10;
char [][] tmp = new char[numEntries][];
tmp[entryIndex++] = methodName != null ? methodName : CharOperation.NO_CHAR;
tmp[entryIndex++] = countChars;
tmp[entryIndex++] = declaringQualification != null ? declaringQualification : CharOperation.NO_CHAR;
tmp[entryIndex++] = typeName != null ? typeName : CharOperation.NO_CHAR;
tmp[entryIndex++] = new char[] {(char) typeModifiersWithExtraFlags, (char) (typeModifiersWithExtraFlags>>16)};
tmp[entryIndex++] = packageName != null ? packageName : CharOperation.NO_CHAR;
if (argCount == 0) {
tmp[entryIndex++] = CharOperation.NO_CHAR;
tmp[entryIndex++] = CharOperation.NO_CHAR;
} else if (argCount > 0) {
tmp[entryIndex++] = signature != null ? CharOperation.replaceOnCopy(signature, SEPARATOR, '\\') : parameterTypesChars != null ? parameterTypesChars : CharOperation.NO_CHAR;
tmp[entryIndex++] = parameterNamesChars != null ? parameterNamesChars : CharOperation.NO_CHAR;
}
tmp[entryIndex++] = new char[] {(char) modifiers, (char) (modifiers>>16)};
tmp[entryIndex] = returnTypeChars;
return CharOperation.concatWithAll(tmp, '/');
}
private static int encodeExtraFlags(int extraFlags) {
int encodedExtraFlags = 0;
if ((extraFlags & ExtraFlags.ParameterTypesStoredAsSignature) != 0) {
encodedExtraFlags |= ASTNode.Bit28;
}
if ((extraFlags & ExtraFlags.IsLocalType) != 0) {
encodedExtraFlags |= ASTNode.Bit29;
}
if ((extraFlags & ExtraFlags.IsMemberType) != 0) {
encodedExtraFlags |= ASTNode.Bit30;
}
if ((extraFlags & ExtraFlags.HasNonPrivateStaticMemberTypes) != 0) {
encodedExtraFlags |= ASTNode.Bit31;
}
return encodedExtraFlags;
}
private static char[] getTypeErasure(char[] typeName) {
int index;
if ((index = CharOperation.indexOf('<', typeName)) == -1) return typeName;
int length = typeName.length;
char[] typeErasurename = new char[length - 2];
System.arraycopy(typeName, 0, typeErasurename, 0, index);
int depth = 1;
for (int i = index + 1; i < length; i++) {
switch (typeName[i]) {
case '<':
depth++;
break;
case '>':
depth--;
break;
default:
if (depth == 0) {
typeErasurename[index++] = typeName[i];
}
break;
}
}
System.arraycopy(typeErasurename, 0, typeErasurename = new char[index], 0, index);
return typeErasurename;
}
public MethodDeclarationPattern(
char[] declaringPackageName,
char[] declaringQualification,
char[] declaringSimpleName,
char[] methodName,
int matchRule) {
super(methodName, declaringQualification, declaringSimpleName,
null, null, null, null, null,
IJavaSearchConstants.DECLARATIONS, matchRule);
this.declaringPackageName = declaringPackageName;
}
public MethodDeclarationPattern(
char[] declaringQualifier,
char[] methodName,
int matchRule) {
super(methodName, CharOperation.NO_CHAR, CharOperation.NO_CHAR,
null, null, null, null, null,
IJavaSearchConstants.DECLARATIONS, matchRule);
this.fusedDeclaringQualifier = declaringQualifier;
}
public MethodDeclarationPattern(int matchRule) {
super(matchRule);
}
@Override
public void decodeIndexKey(char[] key) {
int start = 0;
int slash = CharOperation.indexOf(SEPARATOR, key, start);
this.selector = CharOperation.subarray(key, start, slash);
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
int last = slash - 1;
this.parameterCount = 0;
int power = 1;
for (int i = last; i >= start; i--) {
if (i == last) {
this.parameterCount = key[i] - '0';
} else {
power *= 10;
this.parameterCount += power * (key[i] - '0');
}
}
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
this.declaringQualification = CharOperation.subarray(key, start, slash);
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
this.declaringSimpleName = CharOperation.subarray(key, start, slash);
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
last = slash - 1;
int typeModifiersWithExtraFlags = key[last-1] + (key[last]<<16);
this.declaringTypeModifiers = ConstructorPattern.decodeModifers(typeModifiersWithExtraFlags);
this.extraFlags = ConstructorPattern.decodeExtraFlags(typeModifiersWithExtraFlags);
// initialize optional fields
this.declaringPackageName = null;
this.modifiers = 0;
this.signature = null;
this.parameterTypes = null;
this.parameterNames = null;
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
this.declaringPackageName = CharOperation.subarray(key, start, slash);
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
if (this.parameterCount == 0) {
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start); // skip parameter type/signature
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start); //skip parameter names
this.modifiers = key[last-1] + (key[last]<<16);
} else if (this.parameterCount > 0){
boolean hasParameterStoredAsSignature = (this.extraFlags & ExtraFlags.ParameterTypesStoredAsSignature) != 0;
if (hasParameterStoredAsSignature) {
this.signature = CharOperation.subarray(key, start, slash);
CharOperation.replace(this.signature , '\\', SEPARATOR);
} else {
this.parameterTypes = CharOperation.splitOnWithEnclosures(PARAMETER_SEPARATOR, '<', '>', key, start, slash);
}
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
if (slash != start) {
this.parameterNames = CharOperation.splitOn(PARAMETER_SEPARATOR, key, start, slash);
}
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
last = slash - 1;
this.modifiers = key[last-1] + (key[last]<<16);
} else {
this.modifiers = ClassFileConstants.AccPublic;
}
start = slash + 1;
slash = CharOperation.indexOf(SEPARATOR, key, start);
this.returnSimpleName = CharOperation.subarray(key, start, slash); //TODO : separate return qualified and simple names - currently stored together in simple name.
removeInternalFlags(); // remove internal flags
}
@Override
public SearchPattern getBlankPattern() {
return new MethodDeclarationPattern(R_EXACT_MATCH | R_CASE_SENSITIVE);
}
@Override
public char[][] getIndexCategories() {
return new char[][] { METHOD_DECL_PLUS };
}
private void removeInternalFlags() {
this.extraFlags = this.extraFlags & ~ExtraFlags.ParameterTypesStoredAsSignature; // ParameterTypesStoredAsSignature is an internal flags only used to decode key
}
}