/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.lwjgl.util.generator;
import java.io.PrintWriter;
import java.util.Collection;
import com.sun.mirror.declaration.FieldDeclaration;
import com.sun.mirror.declaration.Modifier;
import com.sun.mirror.type.PrimitiveType;
import com.sun.mirror.type.TypeMirror;
public class FieldsGenerator {
private static void validateField(FieldDeclaration field) {
// Check if field is "public static final"
Collection<Modifier> modifiers = field.getModifiers();
if ( modifiers.size() != 3
|| !modifiers.contains(Modifier.PUBLIC)
|| !modifiers.contains(Modifier.STATIC)
|| !modifiers.contains(Modifier.FINAL) ) {
throw new RuntimeException("Field " + field.getSimpleName() + " is not declared public static final");
}
// Check suported types (int, long, float, String)
TypeMirror field_type = field.getType();
if ( field_type instanceof PrimitiveType ) {
PrimitiveType field_type_prim = (PrimitiveType)field_type;
PrimitiveType.Kind field_kind = field_type_prim.getKind();
if ( field_kind != PrimitiveType.Kind.INT
&& field_kind != PrimitiveType.Kind.LONG
&& field_kind != PrimitiveType.Kind.FLOAT ) {
throw new RuntimeException("Field " + field.getSimpleName() + " is not of type 'int', 'long' or 'float'");
}
} else if ( "java.lang.String".equals(field_type.toString()) ) {
} else {
throw new RuntimeException("Field " + field.getSimpleName() + " is not a primitive type or String");
}
Object field_value = field.getConstantValue();
if ( field_value == null ) {
throw new RuntimeException("Field " + field.getSimpleName() + " has no initial value");
}
}
private static void generateField(PrintWriter writer, FieldDeclaration field, FieldDeclaration prev_field) {
validateField(field);
Object value = field.getConstantValue();
String field_value_string;
Class field_value_class = value.getClass();
if ( field_value_class.equals(Integer.class) ) {
field_value_string = "0x" + Integer.toHexString((Integer)field.getConstantValue()).toUpperCase();
} else if ( field_value_class.equals(Long.class) ) {
field_value_string = "0x" + Long.toHexString((Long)field.getConstantValue()).toUpperCase() + 'L';
} else if ( field_value_class.equals(Float.class) ) {
field_value_string = field.getConstantValue() + "f";
} else if ( field_value_class.equals(String.class) ) {
field_value_string = "\"" + field.getConstantValue() + "\"";
} else {
throw new RuntimeException("Field is of unexpected type. This means there is a bug in validateField().");
}
boolean hadDoc = prev_field != null && prev_field.getDocComment() != null;
boolean hasDoc = field.getDocComment() != null;
boolean newBatch = prev_field == null || !prev_field.getType().equals(field.getType()) || (!hadDoc && field.getDocComment() != null) || (hadDoc && hasDoc && !prev_field.getDocComment().equals(field.getDocComment()));
// Print field declaration
if ( newBatch ) {
if ( prev_field != null )
writer.println(";\n");
Utils.printDocComment(writer, field);
writer.print("\tpublic static final " + field.getType().toString() + " " + field.getSimpleName() + " = " + field_value_string);
} else
writer.print(",\n\t\t" + field.getSimpleName() + " = " + field_value_string);
}
public static void generateFields(PrintWriter writer, Collection<FieldDeclaration> fields) {
if ( 0 < fields.size() ) {
writer.println();
FieldDeclaration prev_field = null;
for ( FieldDeclaration field : fields ) {
generateField(writer, field, prev_field);
prev_field = field;
}
writer.println(";");
}
}
}