--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2012 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.corext.dom;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.eclipse.jdt.core.dom.AST;
+import org.eclipse.jdt.core.dom.ASTNode;
+import org.eclipse.jdt.core.dom.ASTParser;
+import org.eclipse.jdt.core.dom.AbstractTypeDeclaration;
+import org.eclipse.jdt.core.dom.Annotation;
+import org.eclipse.jdt.core.dom.ArrayInitializer;
+import org.eclipse.jdt.core.dom.CharacterLiteral;
+import org.eclipse.jdt.core.dom.CompilationUnit;
+import org.eclipse.jdt.core.dom.Expression;
+import org.eclipse.jdt.core.dom.FieldAccess;
+import org.eclipse.jdt.core.dom.IAnnotationBinding;
+import org.eclipse.jdt.core.dom.IExtendedModifier;
+import org.eclipse.jdt.core.dom.IMemberValuePairBinding;
+import org.eclipse.jdt.core.dom.ITypeBinding;
+import org.eclipse.jdt.core.dom.IVariableBinding;
+import org.eclipse.jdt.core.dom.InfixExpression;
+import org.eclipse.jdt.core.dom.InfixExpression.Operator;
+import org.eclipse.jdt.core.dom.MarkerAnnotation;
+import org.eclipse.jdt.core.dom.MemberValuePair;
+import org.eclipse.jdt.core.dom.MethodDeclaration;
+import org.eclipse.jdt.core.dom.Modifier;
+import org.eclipse.jdt.core.dom.Name;
+import org.eclipse.jdt.core.dom.NodeFinder;
+import org.eclipse.jdt.core.dom.NormalAnnotation;
+import org.eclipse.jdt.core.dom.PrimitiveType;
+import org.eclipse.jdt.core.dom.SimpleType;
+import org.eclipse.jdt.core.dom.SingleMemberAnnotation;
+import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
+import org.eclipse.jdt.core.dom.StringLiteral;
+import org.eclipse.jdt.core.dom.Type;
+import org.eclipse.jdt.core.dom.TypeDeclaration;
+import org.eclipse.jdt.core.dom.TypeLiteral;
+import org.eclipse.jdt.core.dom.TypeParameter;
+import org.eclipse.jdt.core.dom.UnionType;
+import org.eclipse.jdt.core.dom.VariableDeclaration;
+import org.eclipse.jdt.core.dom.rewrite.ImportRewrite;
+import org.eclipse.jdt.core.dom.rewrite.ImportRewrite.ImportRewriteContext;
+
+public class ASTNodeFactory {
+
+ private static final String STATEMENT_HEADER= "class __X__ { void __x__() { "; //$NON-NLS-1$
+ private static final String STATEMENT_FOOTER= "}}"; //$NON-NLS-1$
+
+ private static final String TYPE_HEADER= "class __X__ { abstract "; //$NON-NLS-1$
+ private static final String TYPE_FOOTER= " __f__(); }}"; //$NON-NLS-1$
+
+ private static final String TYPEPARAM_HEADER= "class __X__ { abstract <"; //$NON-NLS-1$
+ private static final String TYPEPARAM_FOOTER= "> void __f__(); }}"; //$NON-NLS-1$
+
+ private static class PositionClearer extends GenericVisitor {
+
+ public PositionClearer() {
+ super(true);
+ }
+
+ @Override
+ protected boolean visitNode(ASTNode node) {
+ node.setSourceRange(-1, 0);
+ return true;
+ }
+ }
+
+ private ASTNodeFactory() {
+ // no instance;
+ }
+
+ public static ASTNode newStatement(AST ast, String content) {
+ StringBuffer buffer= new StringBuffer(STATEMENT_HEADER);
+ buffer.append(content);
+ buffer.append(STATEMENT_FOOTER);
+ ASTParser p= ASTParser.newParser(ast.apiLevel());
+ p.setSource(buffer.toString().toCharArray());
+ CompilationUnit root= (CompilationUnit) p.createAST(null);
+ ASTNode result= ASTNode.copySubtree(ast, NodeFinder.perform(root, STATEMENT_HEADER.length(), content.length()));
+ result.accept(new PositionClearer());
+ return result;
+ }
+
+ public static Name newName(AST ast, String qualifiedName) {
+ return ast.newName(qualifiedName);
+ }
+
+ public static TypeParameter newTypeParameter(AST ast, String content) {
+ StringBuffer buffer= new StringBuffer(TYPEPARAM_HEADER);
+ buffer.append(content);
+ buffer.append(TYPEPARAM_FOOTER);
+ ASTParser p= ASTParser.newParser(ast.apiLevel());
+ p.setSource(buffer.toString().toCharArray());
+ CompilationUnit root= (CompilationUnit) p.createAST(null);
+ List<AbstractTypeDeclaration> list= root.types();
+ TypeDeclaration typeDecl= (TypeDeclaration) list.get(0);
+ MethodDeclaration methodDecl= typeDecl.getMethods()[0];
+ TypeParameter tp= (TypeParameter) methodDecl.typeParameters().get(0);
+ ASTNode result= ASTNode.copySubtree(ast, tp);
+ result.accept(new PositionClearer());
+ return (TypeParameter) result;
+ }
+
+
+ public static Type newType(AST ast, String content) {
+ StringBuffer buffer= new StringBuffer(TYPE_HEADER);
+ buffer.append(content);
+ buffer.append(TYPE_FOOTER);
+ ASTParser p= ASTParser.newParser(ast.apiLevel());
+ p.setSource(buffer.toString().toCharArray());
+ CompilationUnit root= (CompilationUnit) p.createAST(null);
+ List<AbstractTypeDeclaration> list= root.types();
+ TypeDeclaration typeDecl= (TypeDeclaration) list.get(0);
+ MethodDeclaration methodDecl= typeDecl.getMethods()[0];
+ ASTNode type= methodDecl.getReturnType2();
+ ASTNode result= ASTNode.copySubtree(ast, type);
+ result.accept(new PositionClearer());
+ return (Type)result;
+ }
+
+ /**
+ * Returns the new type node corresponding to the type of the given declaration
+ * including the extra dimensions.
+ * @param ast The AST to create the resulting type with.
+ * @param declaration The variable declaration to get the type from
+ * @return a new type node created with the given AST.
+ */
+ public static Type newType(AST ast, VariableDeclaration declaration) {
+ return newType(ast, declaration, null, null);
+ }
+
+ /**
+ * Returns the new type node corresponding to the type of the given declaration
+ * including the extra dimensions. If the type is a {@link UnionType}, use the LUB type.
+ * If the <code>importRewrite</code> is <code>null</code>, the type may be fully-qualified.
+ *
+ * @param ast The AST to create the resulting type with.
+ * @param declaration The variable declaration to get the type from
+ * @param importRewrite the import rewrite to use, or <code>null</code>
+ * @param context the import rewrite context, or <code>null</code>
+ * @return a new type node created with the given AST.
+ *
+ * @since 3.7.1
+ */
+ public static Type newType(AST ast, VariableDeclaration declaration, ImportRewrite importRewrite, ImportRewriteContext context) {
+ Type type= ASTNodes.getType(declaration);
+
+ if (declaration instanceof SingleVariableDeclaration) {
+ Type type2= ((SingleVariableDeclaration) declaration).getType();
+ if (type2 instanceof UnionType) {
+ ITypeBinding typeBinding= type2.resolveBinding();
+ if (typeBinding != null) {
+ if (importRewrite != null) {
+ type= importRewrite.addImport(typeBinding, ast, context);
+ return type;
+ } else {
+ String qualifiedName= typeBinding.getQualifiedName();
+ if (qualifiedName.length() > 0) {
+ type= ast.newSimpleType(ast.newName(qualifiedName));
+ return type;
+ }
+ }
+ }
+ // XXX: fallback for intersection types or unresolved types: take first type of union
+ type= (Type) ((UnionType) type2).types().get(0);
+ return type;
+ }
+ }
+ int extraDim= declaration.getExtraDimensions();
+ type= (Type) ASTNode.copySubtree(ast, type);
+ for (int i= 0; i < extraDim; i++) {
+ type= ast.newArrayType(type);
+ }
+ return type;
+ }
+
+ /**
+ * Returns an expression that is assignable to the given type. <code>null</code> is
+ * returned if the type is the 'void' type.
+ *
+ * @param ast The AST to create the expression for
+ * @param type The type of the returned expression
+ * @param extraDimensions Extra dimensions to the type
+ * @return the Null-literal for reference types, a boolean-literal for a boolean type, a number
+ * literal for primitive types or <code>null</code> if the type is void.
+ */
+ public static Expression newDefaultExpression(AST ast, Type type, int extraDimensions) {
+ if (extraDimensions == 0 && type.isPrimitiveType()) {
+ PrimitiveType primitiveType= (PrimitiveType) type;
+ if (primitiveType.getPrimitiveTypeCode() == PrimitiveType.BOOLEAN) {
+ return ast.newBooleanLiteral(false);
+ } else if (primitiveType.getPrimitiveTypeCode() == PrimitiveType.VOID) {
+ return null;
+ } else {
+ return ast.newNumberLiteral("0"); //$NON-NLS-1$
+ }
+ }
+ return ast.newNullLiteral();
+ }
+
+ /**
+ * Returns an expression that is assignable to the given type binding. <code>null</code> is
+ * returned if the type is the 'void' type.
+ *
+ * @param ast The AST to create the expression for
+ * @param type The type binding to which the returned expression is compatible to
+ * @return the Null-literal for reference types, a boolean-literal for a boolean type, a number
+ * literal for primitive types or <code>null</code> if the type is void.
+ */
+ public static Expression newDefaultExpression(AST ast, ITypeBinding type) {
+ if (type.isPrimitive()) {
+ String name= type.getName();
+ if ("boolean".equals(name)) { //$NON-NLS-1$
+ return ast.newBooleanLiteral(false);
+ } else if ("void".equals(name)) { //$NON-NLS-1$
+ return null;
+ } else {
+ return ast.newNumberLiteral("0"); //$NON-NLS-1$
+ }
+ }
+ return ast.newNullLiteral();
+ }
+
+ /**
+ * Returns a list of newly created Modifier nodes corresponding to the given modifier flags.
+ * @param ast The AST to create the nodes for.
+ * @param modifiers The modifier flags describing the modifier nodes to create.
+ * @return Returns a list of nodes of type {@link Modifier}.
+ */
+ public static List<Modifier> newModifiers(AST ast, int modifiers) {
+ return ast.newModifiers(modifiers);
+ }
+
+ /**
+ * Returns a list of newly created Modifier nodes corresponding to a given list of existing modifiers.
+ * @param ast The AST to create the nodes for.
+ * @param modifierNodes The modifier nodes describing the modifier nodes to create. Only
+ * nodes of type {@link Modifier} are looked at and cloned. To create a full copy of the list consider
+ * to use {@link ASTNode#copySubtrees(AST, List)}.
+ * @return Returns a list of nodes of type {@link Modifier}.
+ */
+ public static List<Modifier> newModifiers(AST ast, List<? extends IExtendedModifier> modifierNodes) {
+ List<Modifier> res= new ArrayList<Modifier>(modifierNodes.size());
+ for (int i= 0; i < modifierNodes.size(); i++) {
+ Object curr= modifierNodes.get(i);
+ if (curr instanceof Modifier) {
+ res.add(ast.newModifier(((Modifier) curr).getKeyword()));
+ }
+ }
+ return res;
+ }
+
+ public static Expression newInfixExpression(AST ast, Operator operator, ArrayList<Expression> operands) {
+ if (operands.size() == 1)
+ return operands.get(0);
+
+ InfixExpression result= ast.newInfixExpression();
+ result.setOperator(operator);
+ result.setLeftOperand(operands.get(0));
+ result.setRightOperand(operands.get(1));
+ result.extendedOperands().addAll(operands.subList(2, operands.size()));
+ return result;
+ }
+
+ public static Annotation newAnnotation(AST ast, IAnnotationBinding annotation, ImportRewrite importRewrite, ImportRewriteContext context) {
+ Type type= importRewrite.addImport(annotation.getAnnotationType(), ast, context);
+ Name name;
+ if (type instanceof SimpleType) {
+ SimpleType simpleType= (SimpleType) type;
+ name= simpleType.getName();
+ // pay ransom to allow reuse of 'name':
+ simpleType.setName(ast.newSimpleName("a")); //$NON-NLS-1$
+ } else {
+ name= ast.newName(ASTNodes.asString(type));
+ }
+
+ IMemberValuePairBinding[] mvps= annotation.getDeclaredMemberValuePairs();
+ if (mvps.length == 0) {
+ MarkerAnnotation result= ast.newMarkerAnnotation();
+ result.setTypeName(name);
+ return result;
+ } else if (mvps.length == 1 && "value".equals(mvps[0].getName())) { //$NON-NLS-1$
+ SingleMemberAnnotation result= ast.newSingleMemberAnnotation();
+ result.setTypeName(name);
+ Object value= mvps[0].getValue();
+ if (value != null)
+ result.setValue(newAnnotationValue(ast, value, importRewrite, context));
+ return result;
+ } else {
+ NormalAnnotation result= ast.newNormalAnnotation();
+ result.setTypeName(name);
+ List<MemberValuePair> values= result.values();
+ for (int i= 0; i < mvps.length; i++) {
+ IMemberValuePairBinding mvp= mvps[i];
+ MemberValuePair mvpNode= ast.newMemberValuePair();
+ mvpNode.setName(ast.newSimpleName(mvp.getName()));
+ Object value= mvp.getValue();
+ if (value != null)
+ mvpNode.setValue(newAnnotationValue(ast, value, importRewrite, context));
+ values.add(mvpNode);
+ }
+ return result;
+ }
+ }
+
+ public static Expression newAnnotationValue(AST ast, Object value, ImportRewrite importRewrite, ImportRewriteContext context) {
+ if (value instanceof Boolean) {
+ return ast.newBooleanLiteral(((Boolean) value).booleanValue());
+
+ } else if (value instanceof Byte || value instanceof Short || value instanceof Integer || value instanceof Long
+ || value instanceof Float || value instanceof Double) {
+ return ast.newNumberLiteral(value.toString());
+
+ } else if (value instanceof Character) {
+ CharacterLiteral result= ast.newCharacterLiteral();
+ result.setCharValue(((Character) value).charValue());
+ return result;
+
+ } else if (value instanceof ITypeBinding) {
+ TypeLiteral result= ast.newTypeLiteral();
+ result.setType(importRewrite.addImport((ITypeBinding) value, ast, context));
+ return result;
+
+ } else if (value instanceof String) {
+ StringLiteral result= ast.newStringLiteral();
+ result.setLiteralValue((String) value);
+ return result;
+
+ } else if (value instanceof IVariableBinding) {
+ IVariableBinding variable= (IVariableBinding) value;
+
+ FieldAccess result= ast.newFieldAccess();
+ result.setName(ast.newSimpleName(variable.getName()));
+ Type type= importRewrite.addImport(variable.getType(), ast, context);
+ Name name;
+ if (type instanceof SimpleType) {
+ SimpleType simpleType= (SimpleType) type;
+ name= simpleType.getName();
+ // pay ransom to allow reuse of 'name':
+ simpleType.setName(ast.newSimpleName("a")); //$NON-NLS-1$
+ } else {
+ name= ast.newName(ASTNodes.asString(type));
+ }
+ result.setExpression(name);
+ return result;
+
+ } else if (value instanceof IAnnotationBinding) {
+ return newAnnotation(ast, (IAnnotationBinding) value, importRewrite, context);
+
+ } else if (value instanceof Object[]) {
+ Object[] values= (Object[]) value;
+ if (values.length == 1)
+ return newAnnotationValue(ast, values[0], importRewrite, context);
+
+ ArrayInitializer initializer= ast.newArrayInitializer();
+ List<Expression> expressions= initializer.expressions();
+ for (Object val : values)
+ expressions.add(newAnnotationValue(ast, val, importRewrite, context));
+ return initializer;
+
+ } else {
+ return null;
+ }
+ }
+
+}
git://git.uio.no / ifi-stolz-refaktor.git / blobdiff