lwjgl/src/java/org/lwjgl/util/generator/FieldsGenerator.java

102 lines
4.7 KiB
Java

/*
* 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 com.sun.mirror.declaration.*;
import com.sun.mirror.type.*;
import java.io.*;
import java.util.*;
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 (field_type.toString().equals("java.lang.String")) {
} 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) {
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());
} else if (field_value_class.equals(Long.class)) {
field_value_string = "0x" + Long.toHexString((Long) field.getConstantValue()) + '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().");
}
Utils.printDocComment(writer, field);
// Print field declaration
writer.println("\tpublic static final " + field.getType().toString() + " " + field.getSimpleName() + " = " + field_value_string + ";");
}
public static void generateFields(PrintWriter writer, Collection<FieldDeclaration> fields) {
for (FieldDeclaration field : fields)
generateField(writer, field);
}
}