/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.apple.internal.jobjc.generator.utils;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import com.apple.internal.jobjc.generator.Utils;
import com.apple.internal.jobjc.generator.Utils.Substituter;
/**
* Utility for generating Java source code.
*/
public abstract class JavaLang {
public static String makeSingleton(final String instanceVariable, final String methodName, final String className, final String...constructorArgs) {
return generateSingleton(new Substituter(
"#private $CLASS $IVAR = null;~" +
"#public $CLASS $METHOD() {~" +
"##return $IVAR != null ? $IVAR : ($IVAR = new $CLASS($CTORARGS));~" +
"#}~"),
instanceVariable, methodName, className, constructorArgs);
}
public static String makeStaticSingleton(final String instanceVariable, final String methodName, final String className, final String...constructorArgs) {
return generateSingleton(new Substituter(
"#private static $CLASS $IVAR = null;~" +
"#public static $CLASS $METHOD() {~" +
"##return $IVAR != null ? $IVAR : ($IVAR = new $CLASS($CTORARGS));~" +
"#}~"),
instanceVariable, methodName, className, constructorArgs);
}
private static String generateSingleton(final Substituter singleton, final String instanceVariable, final String methodName, final String className, final String...constructorArgs) {
singleton.replace("IVAR", instanceVariable);
singleton.replace("METHOD", methodName);
singleton.replace("CLASS", className);
singleton.replace("CTORARGS", Utils.joinWComma(constructorArgs));
return singleton.toString();
}
///
public static class JLTertiary{
public Object cond, tExp, fExp;
public JLTertiary(){}
public JLTertiary(Object cond, Object tExp, Object fExp){
this.cond = cond;
this.tExp = tExp;
this.fExp = fExp;
}
@Override public String toString() {
return "((" + cond + ")\n\t? (" + tExp + ")\n\t: (" + fExp + "))";
}
}
public static class JLCall{
public String fun;
public List<Object> args = new ArrayList<Object>();
public JLCall(String fun, Object... args){
this.fun = fun;
this.args.addAll(Arrays.asList(args));
}
@Override public String toString(){
return fun + "(" + Fp.join(", ", args) + ")";
}
}
public static class JLField{
public Set<String> mods = new TreeSet<String>();
public String type;
public String name;
public Object value;
public JLField(String mods, String type, String name){
this(mods, type, name, null);
}
public JLField(String mods, String type, String name, Object value){
this.mods.addAll(Arrays.asList(mods.split("\\s")));
this.type = type;
this.name = name;
this.value = value;
}
@Override public String toString(){
return "\t" + Fp.join(" ", mods) + " " + type + " " + name + (value==null ? "" : " = " + value) + ";\n";
}
}
public static class JLCtor extends JLMethod{
public JLCtor(String mods, String name, Object... args) {
super(mods, "", name, args);
}
@Override public String toString(){
this.type = "";
return super.toString();
}
}
public static class JLReturn{
public Object target;
public JLReturn(Object target){
this.target = target;
}
@Override public String toString(){
return "return " + target + ";";
}
}
public static class JLMethod{
public List<String> jdoc = new ArrayList<String>();
public Set<String> attrs = new TreeSet<String>();
public Set<String> mods = new TreeSet<String>();
public String type;
public String name;
public List<Object> args = new ArrayList<Object>();
public List<Object> body = new ArrayList<Object>();
public JLMethod(){}
public JLMethod(String mods, String type, String name, Object... args) {
this.mods.addAll(Arrays.asList(mods.split("\\s")));
this.type = type;
this.name = name;
this.args.addAll(Arrays.asList(args));
}
@Override public String toString(){
StringWriter out = new StringWriter();
if(jdoc.size() > 0){
out.append("\t/**\n");
out.append("\t * " + Fp.join("\n\t * ", jdoc));
out.append("\t */\n");
}
out.append("\t" + Fp.join(" ", attrs) + " " + Fp.join(" ", mods) + " " + type + " " + name + "(" + Fp.join(", ", args) + "){\n");
out.append("\t\t" + Fp.join("\n\t\t", body) + "\n");
out.append("\t}\n");
return out.toString();
}
}
}