com.xdev.jadoth.codegen.java.Java Maven / Gradle / Ivy
package com.xdev.jadoth.codegen.java;
/*-
* #%L
* XDEV Application Framework
* %%
* Copyright (C) 2003 - 2020 XDEV Software
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import static com.xdev.jadoth.codegen.Punctuation._;
import static java.lang.reflect.Modifier.isFinal;
import static java.lang.reflect.Modifier.isPublic;
import static java.lang.reflect.Modifier.isStatic;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import com.xdev.jadoth.codegen.CodeGenException;
import com.xdev.jadoth.lang.reflection.JaReflect;
/**
* The Class Java.
*
* @author Thomas Muenz
*/
public abstract class Java
{
/**
* The Class Punctuation.
*/
public static abstract class Punctuation implements com.xdev.jadoth.codegen.Punctuation
{
/** The Constant genericsStart. */
public static final char genericsStart = '<';
/** The Constant genericsEnd. */
public static final char genericsEnd = '>';
//comparators
/** The Constant eq. */
public static final String eq = is+is;
/** The Constant ne. */
public static final String ne = ne1;
/** The Constant _is_. */
public static final String _is_ = _+is+_;
/** The Constant _eq_. */
public static final String _eq_ = _+eq+_;
//Generic stuff shortcuts
/** The Constant scolN. */
public static final String scolN = scol+NEW_LINE;
}
/**
* The Class Lang.
*/
public static abstract class Lang
{
/** The Constant $if. */
public static final String $if = "if";
/** The Constant $else. */
public static final String $else = "else";
/** The Constant blockStart. */
public static final String blockStart = "{";
/** The Constant blockEnd. */
public static final String blockEnd = "}";
//Java keywords
/** The Constant $package. */
public static final String $package = "package";
/** The Constant $import. */
public static final String $import = "import";
/** The Constant $return. */
public static final String $return = "return";
/** The Constant $void. */
public static final String $void = "void";
/** The Constant $null. */
public static final String $null = "null";
/** The Constant $true. */
public static final String $true = "true";
/** The Constant $false. */
public static final String $false = "false";
/** The Constant $public. */
public static final String $public = "public";
/** The Constant $protected. */
public static final String $protected = "protected";
/** The Constant $private. */
public static final String $private = "private";
/** The Constant $static. */
public static final String $static = "static";
/** The Constant $final. */
public static final String $final = "final";
/** The Constant $transient. */
public static final String $transient = "transient";
/** The Constant $native. */
public static final String $native = "native";
/** The Constant $volatile. */
public static final String $volatile = "volatile";
/** The Constant $strictfp. */
public static final String $strictfp = "strictfp";
/** The Constant $class. */
public static final String $class = "class";
/** The Constant $interface. */
public static final String $interface = "interface";
/** The Constant $abstract. */
public static final String $abstract = "abstract";
/** The Constant $extends. */
public static final String $extends = "extends";
/** The Constant $implements. */
public static final String $implements = "implements";
/** The Constant $instanceof. */
public static final String $instanceof = "instanceof";
/** The Constant $enum. */
public static final String $enum = "enum";
/** The Constant $new. */
public static final String $new = "new";
/** The Constant $this. */
public static final String $this = "this";
/** The Constant $super. */
public static final String $super = "super";
/** The Constant $boolean. */
public static final String $boolean = "boolean";
/** The Constant $byte. */
public static final String $byte = "byte";
/** The Constant $short. */
public static final String $short = "short";
/** The Constant $int. */
public static final String $int = "int";
/** The Constant $long. */
public static final String $long = "long";
/** The Constant $float. */
public static final String $float = "float";
/** The Constant $double. */
public static final String $double = "double";
/** The Constant $char. */
public static final String $char = "char";
/** The Constant $try. */
public static final String $try = "try";
/** The Constant $catch. */
public static final String $catch = "catch";
/** The Constant $finally. */
public static final String $finally = "finally";
/** The Constant $throw. */
public static final String $throw = "throw";
/** The Constant $throws. */
public static final String $throws = "throws";
// public static final String $if = "if";
// public static final String $else = "else";
/** The Constant $for. */
public static final String $for = "for";
/** The Constant $while. */
public static final String $while = "while";
/** The Constant $do. */
public static final String $do = "do";
/** The Constant $break. */
public static final String $break = "break";
/** The Constant $continue. */
public static final String $continue = "continue";
/** The Constant $switch. */
public static final String $switch = "switch";
/** The Constant $case. */
public static final String $case = "case";
/** The Constant $default. */
public static final String $default = "default";
/** The Constant $synchronized. */
public static final String $synchronized = "synchronized";
/** The Constant $assert. */
public static final String $assert = "assert";
//Java keyword shortcuts
/** The Constant import_. */
public static final String import_ = $import+_;
/** The Constant package_. */
public static final String package_ = $package+_;
/** The Constant return_. */
public static final String return_ = $return+_;
/** The Constant public_. */
public static final String public_ = $public+_;
/** The Constant protected_. */
public static final String protected_ = $protected+_;
/** The Constant private_. */
public static final String private_ = $private+_;
/** The Constant static_. */
public static final String static_ = $static+_;
/** The Constant final_. */
public static final String final_ = $final+_;
/** The Constant transient_. */
public static final String transient_ = $transient+_;
/** The Constant native_. */
public static final String native_ = $native+_;
/** The Constant volatile_. */
public static final String volatile_ = $volatile+_;
/** The Constant strictfp_. */
public static final String strictfp_ = $strictfp+_;
/** The Constant void_. */
public static final String void_ = $void+_;
/** The Constant class_. */
public static final String class_ = $class+_;
/** The Constant interface_. */
public static final String interface_ = $interface+_;
/** The Constant abstract_. */
public static final String abstract_ = $abstract+_;
/** The Constant extends_. */
public static final String extends_ = $extends+_;
/** The Constant implements_. */
public static final String implements_ = $implements+_;
/** The Constant instanceof_. */
public static final String instanceof_ = $instanceof+_;
/** The Constant enum_. */
public static final String enum_ = $enum+_;
/** The Constant new_. */
public static final String new_ = $new+_;
/** The Constant boolean_. */
public static final String boolean_ = $boolean+_;
/** The Constant byte_. */
public static final String byte_ = $byte+_;
/** The Constant short_. */
public static final String short_ = $short+_;
/** The Constant int_. */
public static final String int_ = $int+_;
/** The Constant long_. */
public static final String long_ = $long+_;
/** The Constant float_. */
public static final String float_ = $float+_;
/** The Constant double_. */
public static final String double_ = $double+_;
/** The Constant char_. */
public static final String char_ = $char+_;
/** The Constant throw_. */
public static final String throw_ = $throw+_;
/** The Constant throws_. */
public static final String throws_ = $throws+_;
/** The Constant keywords. */
private static final String[] keywords = collectJavaKeywords();
/**
* Collect java keywords.
*
* @return the string[]
*/
private static final String[] collectJavaKeywords()
{
final ArrayList javaKeywords = new ArrayList(30);
final int excludedModifiers = ~(Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL);
try {
for(final Field f : JaReflect.getAllFields(Lang.class, excludedModifiers)) {
final int modifiers = f.getModifiers();
if(f.getName().charAt(0) == '$' && isStatic(modifiers) && isPublic(modifiers) && isFinal(modifiers)){
javaKeywords.add(f.get(null).toString());
}
}
}
catch(final IllegalArgumentException e) {
throw new CodeGenException(e);
}
catch(final IllegalAccessException e) {
throw new CodeGenException(e);
}
return javaKeywords.toArray(new String[javaKeywords.size()]);
}
}
/**
* Checks if is java keyword.
*
* @param string the string
* @return true, if is java keyword
*/
public static final boolean isJavaKeyword(final String string)
{
if(string == null) return false;
for(final String keyword : Java.Lang.keywords) {
if(keyword.equals(string)) {
return true;
}
}
return false;
}
/**
* Generated the SerialVersionUID value for serializableClass.
*
* @param serializableClass any class tha implements {@link Serializable}
* @return the SerialVersionUID generated by the JVM implementation
* @throws ClassCastException if serializableClass does not implement {@link Serializable}
*/
public static final long generateSerialVersionUID(final Class serializableClass)
throws ClassCastException
{
final java.io.ObjectStreamClass osc = java.io.ObjectStreamClass.lookup(serializableClass);
if(osc == null){
throw new ClassCastException("Not serializable: "+serializableClass);
}
return osc.getSerialVersionUID();
}
/**
* The Enum Visibility.
*/
public enum Visibility {
/** The public_. */
public_(Lang.$public),
/** The protected_. */
protected_(Lang.$protected),
/** The private_. */
private_(Lang.$private),
/** The default_. */
default_(null);
/** The modifier. */
private String modifier;
/**
* Instantiates a new visibility.
*
* @param modifier the modifier
*/
private Visibility(final String modifier){
this.modifier = modifier;
}
/**
* @return
* @see java.lang.Enum#toString()
*/
@Override
public String toString() {
return this.modifier;
}
}
///////////////////////////////////////////////////////////////////////////
// constructors //
/////////////////////
/**
* Instantiates a new java.
*/
protected Java() {
super();
}
/**
* The Class Array.
*/
public static class Array{
/** The comp type. */
public final Class compType;
/** The dim. */
public final int dim;
/**
* Instantiates a new array.
*
* @param compType the comp type
* @param dim the dim
*/
public Array(final Class compType, final int dim) {
super();
this.compType = compType;
this.dim = dim;
}
/**
* Gets the declaration.
*
* @return the declaration
*/
public String getDeclaration(){
final StringBuilder sb = new StringBuilder(128).append(this.compType.getSimpleName());
int d = this.dim;
while(d-->0){
sb.append("[]");
}
return sb.toString();
}
/**
* Instantiate.
*
* @param initializer the initializer
* @param dims the dims
* @return the string
*/
private String instantiate(final String initializer, final int... dims){
final StringBuilder sb = new StringBuilder(128)
.append(Lang.$new)
.append(_)
.append(this.compType.getSimpleName());
if(dims == null){
int d = this.dim;
while(d-->0){
sb.append("[]");
}
sb.append("{").append(initializer).append("}");
}
else {
final int maxDimsIdx = dims.length-1;
for(int i = 0; i < this.dim; i++) {
sb.append("[");
if(i <= maxDimsIdx){
sb.append(dims[i]);
}
else {
sb.append(0);
}
sb.append("]");
}
}
return sb.toString();
}
/**
* Instantiate.
*
* @param dims the dims
* @return the string
*/
public String instantiate(final int... dims){
return this.instantiate(null, dims);
}
/**
* Instantiate.
*
* @param initializer the initializer
* @return the string
*/
public String instantiate(final String initializer){
return this.instantiate(initializer, null);
}
}
}
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