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package aspects.xpt.expressions
import org.eclipse.gmf.codegen.gmfgen.GenDiagram
import com.google.inject.Inject
import aspects.xpt.Common
import com.google.inject.Singleton
@Singleton class AbstractExpression extends xpt.expressions.AbstractExpression {
@Inject extension Common
override performCast(GenDiagram it) '''
«generatedMemberComment(
'Expression may return number value which is not directly compatible with feature type (e.g. Double when Integer is expected), or EEnumLiteral meta-object when literal instance is expected')»
public static Object performCast(Object value, org.eclipse.emf.ecore.EDataType targetType) {
if (targetType instanceof org.eclipse.emf.ecore.EEnum) {
if (value instanceof org.eclipse.emf.ecore.EEnumLiteral) {
org.eclipse.emf.ecore.EEnumLiteral literal = (org.eclipse.emf.ecore.EEnumLiteral) value;
return (literal.getInstance() != null) ? literal.getInstance() : literal;
}
}
if (false == value instanceof Number || targetType == null || targetType.getInstanceClass() == null) {
return value;
}
Class<?> targetClass = targetType.getInstanceClass();
Number num = (Number) value;
Class<?> valClass = value.getClass();
Class<?> targetWrapperClass = targetClass;
if (targetClass.isPrimitive()) {
targetWrapperClass = org.eclipse.emf.ecore.util.EcoreUtil.wrapperClassFor(targetClass);
}
if (valClass.equals(targetWrapperClass)) {
return value;
}
if (Number.class.isAssignableFrom(targetWrapperClass)) {
if (targetWrapperClass.equals(Byte.class)) {
return new Byte(num.byteValue());
}
if (targetWrapperClass.equals(Integer.class)) {
return new Integer(num.intValue());
}
if (targetWrapperClass.equals(Short.class)) {
return new Short(num.shortValue());
}
if (targetWrapperClass.equals(Long.class)) {
return new Long(num.longValue());
}
if (targetWrapperClass.equals(java.math.BigInteger.class)) {
return java.math.BigInteger.valueOf(num.longValue());
}
if (targetWrapperClass.equals(Float.class)) {
return new Float(num.floatValue());
}
if (targetWrapperClass.equals(Double.class)) {
return new Double(num.doubleValue());
}
if (targetWrapperClass.equals(java.math.BigDecimal.class)) {
return new java.math.BigDecimal(num.doubleValue());
}
}
return value;
}
'''
}
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