/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.parser.java.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.ServiceLoader;
import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.AbstractTypeDeclaration;
import org.eclipse.jdt.core.dom.AnnotationTypeDeclaration;
import org.eclipse.jdt.core.dom.BodyDeclaration;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.EnumDeclaration;
import org.eclipse.jdt.core.dom.ImportDeclaration;
import org.eclipse.jdt.core.dom.Modifier.ModifierKeyword;
import org.eclipse.jdt.core.dom.PackageDeclaration;
import org.eclipse.jdt.core.dom.Type;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jdt.core.dom.TypeParameter;
import org.eclipse.jface.text.Document;
import org.eclipse.text.edits.TextEdit;
import org.jboss.forge.parser.JavaParser;
import org.jboss.forge.parser.ParserException;
import org.jboss.forge.parser.java.Annotation;
import org.jboss.forge.parser.java.Import;
import org.jboss.forge.parser.java.InterfaceCapable;
import org.jboss.forge.parser.java.JavaInterface;
import org.jboss.forge.parser.java.JavaSource;
import org.jboss.forge.parser.java.Member;
import org.jboss.forge.parser.java.SyntaxError;
import org.jboss.forge.parser.java.Visibility;
import org.jboss.forge.parser.java.ast.AnnotationAccessor;
import org.jboss.forge.parser.java.ast.ModifierAccessor;
import org.jboss.forge.parser.java.util.Formatter;
import org.jboss.forge.parser.java.util.Strings;
import org.jboss.forge.parser.java.util.Types;
import org.jboss.forge.parser.spi.WildcardImportResolver;
/**
* Represents a Java Source File
*
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*/
@SuppressWarnings("unchecked")
public abstract class AbstractJavaSource<O extends JavaSource<O>> implements
JavaSource<O>, InterfaceCapable<O>
{
private final AnnotationAccessor<O, O> annotations = new AnnotationAccessor<O, O>();
private final ModifierAccessor modifiers = new ModifierAccessor();
protected final Document document;
protected final CompilationUnit unit;
protected final BodyDeclaration body;
protected final JavaSource<?> enclosingType;
public static ServiceLoader<WildcardImportResolver> loader = ServiceLoader.load(WildcardImportResolver.class);
private static List<WildcardImportResolver> resolvers;
public AbstractJavaSource(JavaSource<?> enclosingType, final Document document, final CompilationUnit unit,
BodyDeclaration body)
{
this.enclosingType = enclosingType == null ? this : enclosingType;
this.document = document;
this.unit = unit;
this.body = body;
}
@Override
public JavaSource<?> getEnclosingType()
{
return enclosingType;
}
/*
* Annotation modifiers
*/
@Override
public Annotation<O> addAnnotation()
{
return annotations.addAnnotation(this, getBodyDeclaration());
}
@Override
public Annotation<O> addAnnotation(final Class<? extends java.lang.annotation.Annotation> clazz)
{
return annotations.addAnnotation(this, getBodyDeclaration(), clazz.getName());
}
@Override
public Annotation<O> addAnnotation(final String className)
{
return annotations.addAnnotation(this, getBodyDeclaration(), className);
}
@Override
public List<Annotation<O>> getAnnotations()
{
return annotations.getAnnotations(this, getBodyDeclaration());
}
@Override
public boolean hasAnnotation(final Class<? extends java.lang.annotation.Annotation> type)
{
return annotations.hasAnnotation(this, getBodyDeclaration(), type.getName());
}
@Override
public boolean hasAnnotation(final String type)
{
return annotations.hasAnnotation(this, getBodyDeclaration(), type);
}
@Override
public O removeAnnotation(final Annotation<O> annotation)
{
return (O) annotations.removeAnnotation(this, getBodyDeclaration(), annotation);
}
@Override
public Annotation<O> getAnnotation(final Class<? extends java.lang.annotation.Annotation> type)
{
return annotations.getAnnotation(this, getBodyDeclaration(), type);
}
@Override
public Annotation<O> getAnnotation(final String type)
{
return annotations.getAnnotation(this, getBodyDeclaration(), type);
}
/*
* Import modifiers
*/
@Override
public Import addImport(final Class<?> type)
{
return addImport(type.getCanonicalName());
}
@Override
public <T extends JavaSource<?>> Import addImport(final T type)
{
String qualifiedName = type.getQualifiedName();
return this.addImport(qualifiedName);
}
@Override
public Import addImport(final Import imprt)
{
return addImport(imprt.getQualifiedName()).setStatic(imprt.isStatic());
}
@Override
public Import addImport(final String className)
{
Import imprt;
if (Types.isSimpleName(className) && !hasImport(className))
{
throw new IllegalArgumentException("Cannot import class without a package [" + className + "]");
}
if (!hasImport(className) && validImport(className))
{
imprt = new ImportImpl(this).setName(className);
unit.imports().add(imprt.getInternal());
}
else if (hasImport(className))
{
imprt = getImport(className);
}
else
{
throw new IllegalArgumentException("Attempted to import the illegal type [" + className + "]");
}
return imprt;
}
@Override
public Import getImport(final String className)
{
List<Import> imports = getImports();
for (Import imprt : imports)
{
if (imprt.getQualifiedName().equals(className) || imprt.getSimpleName().equals(className))
{
return imprt;
}
}
return null;
}
@Override
public Import getImport(final Class<?> type)
{
return getImport(type.getName());
}
@Override
public <T extends JavaSource<?>> Import getImport(final T type)
{
return getImport(type.getQualifiedName());
}
@Override
public Import getImport(final Import imprt)
{
return getImport(imprt.getQualifiedName());
}
@Override
public List<Import> getImports()
{
List<Import> results = new ArrayList<Import>();
for (ImportDeclaration i : (List<ImportDeclaration>) unit.imports())
{
results.add(new ImportImpl(this, i));
}
return Collections.unmodifiableList(results);
}
@Override
public boolean hasImport(final Class<?> type)
{
return hasImport(type.getName());
}
@Override
public <T extends JavaSource<T>> boolean hasImport(final T type)
{
return hasImport(type.getQualifiedName());
}
@Override
public boolean hasImport(final Import imprt)
{
return hasImport(imprt.getQualifiedName());
}
@Override
public boolean hasImport(final String type)
{
return getImport(type) != null;
}
@Override
public boolean requiresImport(final Class<?> type)
{
return requiresImport(type.getName());
}
@Override
public boolean requiresImport(final String type)
{
if (!validImport(type)
|| hasImport(type)
|| type.startsWith("java.lang."))
{
return false;
}
return true;
}
@Override
public String resolveType(final String type)
{
String original = type;
String result = type;
if (Types.isPrimitive(result))
{
return result;
}
// Strip away any characters that might hinder the type matching process
if (Types.isArray(result))
{
original = Types.stripArray(result);
result = Types.stripArray(result);
}
if (Types.isGeneric(result))
{
original = Types.stripGenerics(result);
result = Types.stripGenerics(result);
}
// Check for direct import matches first since they are the fastest and least work-intensive
if (Types.isSimpleName(result))
{
if (!hasImport(type) && Types.isJavaLang(type))
{
result = "java.lang." + result;
}
if (result.equals(original))
{
for (Import imprt : getImports())
{
if (Types.areEquivalent(result, imprt.getQualifiedName()))
{
result = imprt.getQualifiedName();
break;
}
}
}
}
// If we didn't match any imports directly, we might have a wild-card/on-demand import.
if (Types.isSimpleName(result))
{
for (Import imprt : getImports())
{
if (imprt.isWildcard())
{
// TODO warn if no wild-card resolvers are configured
// TODO Test wild-card/on-demand import resolving
for (WildcardImportResolver r : getImportResolvers())
{
result = r.resolve(this, result);
if (Types.isQualified(result))
break;
}
}
}
}
// No import matches and no wild-card/on-demand import matches means this class is in the same package.
if (Types.isSimpleName(result))
{
if (getPackage() != null)
result = getPackage() + "." + result;
}
return result;
}
private List<WildcardImportResolver> getImportResolvers()
{
if (resolvers == null)
{
resolvers = new ArrayList<WildcardImportResolver>();
for (WildcardImportResolver r : resolvers)
{
resolvers.add(r);
}
}
if (resolvers.size() == 0)
{
throw new IllegalStateException("No instances of [" + WildcardImportResolver.class.getName()
+ "] were found on the classpath.");
}
return resolvers;
}
private boolean validImport(final String type)
{
return (type != null) && !type.matches("byte|short|int|long|float|double|char|boolean");
}
@Override
public O removeImport(final String name)
{
for (Import i : getImports())
{
if (i.getQualifiedName().equals(name))
{
removeImport(i);
break;
}
}
return (O) this;
}
@Override
public O removeImport(final Class<?> clazz)
{
return removeImport(clazz.getName());
}
@Override
public <T extends JavaSource<?>> O removeImport(final T type)
{
return removeImport(type.getQualifiedName());
}
@Override
public O removeImport(final Import imprt)
{
Object internal = imprt.getInternal();
if (unit.imports().contains(internal))
{
unit.imports().remove(internal);
}
return (O) this;
}
@Override
public List<Member<O, ?>> getMembers()
{
List<Member<O, ?>> result = new ArrayList<Member<O, ?>>();
return result;
}
protected AbstractTypeDeclaration getBodyDeclaration()
{
if (body instanceof AbstractTypeDeclaration)
return (AbstractTypeDeclaration) body;
throw new ParserException("Source body was not of the expected type.");
}
@Override
public List<String> getGenericTypes()
{
List<String> result = new ArrayList<String>();
TypeDeclaration type = (TypeDeclaration) body;
List<TypeParameter> typeParameters = type.typeParameters();
if (typeParameters != null)
{
for (TypeParameter typeParameter : typeParameters)
{
result.add(typeParameter.getName().getIdentifier());
}
}
return Collections.unmodifiableList(result);
}
@Override
public O addGenericType(String genericType)
{
TypeDeclaration type = (TypeDeclaration) body;
TypeParameter tp2 = unit.getAST().newTypeParameter();
tp2.setName(unit.getAST().newSimpleName(genericType));
type.typeParameters().add(tp2);
return (O) this;
}
@Override
public O removeGenericType(String genericType)
{
TypeDeclaration type = (TypeDeclaration) body;
List<TypeParameter> typeParameters = type.typeParameters();
if (typeParameters != null)
{
Iterator<TypeParameter> it = typeParameters.iterator();
while (it.hasNext())
{
TypeParameter typeParameter = it.next();
if (typeParameter.getName().getIdentifier().equals(genericType))
{
it.remove();
}
}
}
return (O) this;
}
/*
* Name modifiers
*/
@Override
public String getName()
{
return getBodyDeclaration().getName().getIdentifier();
}
@Override
public O setName(final String name)
{
getBodyDeclaration().setName(unit.getAST().newSimpleName(name));
return updateTypeNames(name);
}
@Override
public String getCanonicalName()
{
String result = getName();
JavaSource<?> enclosingType = this;
while (enclosingType != enclosingType.getEnclosingType())
{
enclosingType = getEnclosingType();
result = enclosingType.getEnclosingType().getName() + "." + result;
enclosingType = enclosingType.getEnclosingType();
}
if (!Strings.isNullOrEmpty(getPackage()))
result = getPackage() + "." + result;
return result;
}
/**
* Call-back to allow updating of any necessary internal names with the given name.
*/
protected abstract O updateTypeNames(String name);
@Override
public String getQualifiedName()
{
String result = getName();
JavaSource<?> enclosingType = this;
while (enclosingType != enclosingType.getEnclosingType())
{
enclosingType = getEnclosingType();
result = enclosingType.getEnclosingType().getName() + "$" + result;
enclosingType = enclosingType.getEnclosingType();
}
if (!Strings.isNullOrEmpty(getPackage()))
result = getPackage() + "." + result;
return result;
}
/*
* Package modifiers
*/
@Override
public String getPackage()
{
PackageDeclaration pkg = unit.getPackage();
if (pkg != null)
{
return pkg.getName().getFullyQualifiedName();
}
else
{
return null;
}
}
@Override
public O setPackage(final String name)
{
if (unit.getPackage() == null)
{
unit.setPackage(unit.getAST().newPackageDeclaration());
}
unit.getPackage().setName(unit.getAST().newName(name));
return (O) this;
}
@Override
public O setDefaultPackage()
{
unit.setPackage(null);
return (O) this;
}
@Override
public boolean isDefaultPackage()
{
return unit.getPackage() == null;
}
/*
* Visibility modifiers
*/
@Override
public boolean isPackagePrivate()
{
return (!isPublic() && !isPrivate() && !isProtected());
}
@Override
public O setPackagePrivate()
{
modifiers.clearVisibility(getBodyDeclaration());
return (O) this;
}
@Override
public boolean isPublic()
{
return modifiers.hasModifier(getBodyDeclaration(), ModifierKeyword.PUBLIC_KEYWORD);
}
@Override
public O setPublic()
{
modifiers.clearVisibility(getBodyDeclaration());
modifiers.addModifier(getBodyDeclaration(), ModifierKeyword.PUBLIC_KEYWORD);
return (O) this;
}
@Override
public boolean isPrivate()
{
return modifiers.hasModifier(getBodyDeclaration(), ModifierKeyword.PRIVATE_KEYWORD);
}
@Override
public O setPrivate()
{
modifiers.clearVisibility(getBodyDeclaration());
modifiers.addModifier(getBodyDeclaration(), ModifierKeyword.PRIVATE_KEYWORD);
return (O) this;
}
@Override
public boolean isProtected()
{
return modifiers.hasModifier(getBodyDeclaration(), ModifierKeyword.PROTECTED_KEYWORD);
}
@Override
public O setProtected()
{
modifiers.clearVisibility(getBodyDeclaration());
modifiers.addModifier(getBodyDeclaration(), ModifierKeyword.PROTECTED_KEYWORD);
return (O) this;
}
@Override
public Visibility getVisibility()
{
return Visibility.getFrom(this);
}
@Override
public O setVisibility(final Visibility scope)
{
return (O) Visibility.set(this, scope);
}
/*
* Non-manipulation methods.
*/
/**
* Return this {@link JavaSource} file as a String
*/
@Override
public String toString()
{
Document document = new Document(this.document.get());
try
{
TextEdit edit = unit.rewrite(document, null);
edit.apply(document);
}
catch (Exception e)
{
throw new ParserException("Could not modify source: " + unit.toString(), e);
}
return Formatter.format(document.get());
}
@Override
public Object getInternal()
{
return unit;
}
@Override
public O getOrigin()
{
return (O) this;
}
@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + ((body == null) ? 0 : body.hashCode());
result = prime * result + ((document == null) ? 0 : document.hashCode());
result = prime * result + ((enclosingType == null) ? 0 : enclosingType.hashCode());
result = prime * result + ((unit == null) ? 0 : unit.hashCode());
return result;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
AbstractJavaSource<?> other = (AbstractJavaSource<?>) obj;
if (body == null)
{
if (other.body != null)
return false;
}
else if (!body.equals(other.body))
return false;
if (document == null)
{
if (other.document != null)
return false;
}
else if (!document.equals(other.document))
return false;
if (enclosingType == null)
{
if (other.enclosingType != null)
return false;
}
else if (!enclosingType.equals(other.enclosingType))
return false;
if (unit == null)
{
if (other.unit != null)
return false;
}
else if (!unit.equals(other.unit))
return false;
return true;
}
@Override
public List<SyntaxError> getSyntaxErrors()
{
List<SyntaxError> result = new ArrayList<SyntaxError>();
IProblem[] problems = unit.getProblems();
if (problems != null)
{
for (IProblem problem : problems)
{
result.add(new SyntaxErrorImpl(this, problem));
}
}
return result;
}
@Override
public boolean hasSyntaxErrors()
{
return !getSyntaxErrors().isEmpty();
}
@Override
public boolean isClass()
{
AbstractTypeDeclaration declaration = getBodyDeclaration();
return (declaration instanceof TypeDeclaration)
&& !((TypeDeclaration) declaration).isInterface();
}
@Override
public boolean isEnum()
{
AbstractTypeDeclaration declaration = getBodyDeclaration();
return declaration instanceof EnumDeclaration;
}
@Override
public boolean isInterface()
{
AbstractTypeDeclaration declaration = getBodyDeclaration();
return (declaration instanceof TypeDeclaration)
&& ((TypeDeclaration) declaration).isInterface();
}
@Override
public boolean isAnnotation()
{
AbstractTypeDeclaration declaration = getBodyDeclaration();
return declaration instanceof AnnotationTypeDeclaration;
}
/*
* Interfaced Methods
*/
@Override
public List<String> getInterfaces()
{
List<String> result = new ArrayList<String>();
List<Type> superTypes = JDTHelper.getInterfaces(getBodyDeclaration());
for (Type type : superTypes)
{
String name = JDTHelper.getTypeName(type);
if (Types.isSimpleName(name) && this.hasImport(name))
{
Import imprt = this.getImport(name);
String pkg = imprt.getPackage();
if (!Strings.isNullOrEmpty(pkg))
{
name = pkg + "." + name;
}
}
result.add(name);
}
return result;
}
@Override
public O addInterface(final String type)
{
if (!this.hasInterface(type))
{
Type interfaceType = JDTHelper.getInterfaces(
JavaParser.parse(JavaInterfaceImpl.class,
"public interface Mock extends " + Types.toSimpleName(type)
+ " {}").getBodyDeclaration()).get(0);
if (this.hasInterface(Types.toSimpleName(type)) || this.hasImport(Types.toSimpleName(type)))
{
interfaceType = JDTHelper.getInterfaces(JavaParser.parse(JavaInterfaceImpl.class,
"public interface Mock extends " + type + " {}").getBodyDeclaration()).get(0);
}
this.addImport(type);
ASTNode node = ASTNode.copySubtree(unit.getAST(), interfaceType);
JDTHelper.getInterfaces(getBodyDeclaration()).add((Type) node);
}
return (O) this;
}
@Override
public O addInterface(final Class<?> type)
{
return addInterface(type.getName());
}
@Override
public O addInterface(final JavaInterface type)
{
return addInterface(type.getQualifiedName());
}
@Override
public boolean hasInterface(final String type)
{
for (String name : getInterfaces())
{
if (Types.areEquivalent(name, type))
{
return true;
}
}
return false;
}
@Override
public boolean hasInterface(final Class<?> type)
{
return hasInterface(type.getName());
}
@Override
public boolean hasInterface(final JavaInterface type)
{
return hasInterface(type.getQualifiedName());
}
@Override
public O removeInterface(final String type)
{
List<Type> interfaces = JDTHelper.getInterfaces(getBodyDeclaration());
for (Type i : interfaces)
{
if (Types.areEquivalent(i.toString(), type))
{
interfaces.remove(i);
break;
}
}
return (O) this;
}
@Override
public O removeInterface(final Class<?> type)
{
return removeInterface(type.getName());
}
@Override
public O removeInterface(final JavaInterface type)
{
return removeInterface(type.getQualifiedName());
}
}