com.mysema.scalagen.Rethrows.scala Maven / Gradle / Ivy
/*
* Copyright (C) 2011, Mysema Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mysema.scalagen
import java.util.ArrayList
import UnitTransformer._
object Rethrows extends Rethrows
/**
* Rethrows unwraps try/catch blocks with simple rethrows
*/
class Rethrows extends UnitTransformerBase {
def transform(cu: CompilationUnit): CompilationUnit = {
cu.accept(this, cu).asInstanceOf[CompilationUnit]
}
override def visit(n: Try, arg: CompilationUnit): Node = {
if (n.getFinallyBlock == null && !isEmpty(n.getCatchs) && n.getCatchs.filter(isPrinted).isEmpty) {
extract(super.visit(n.getTryBlock, arg).asInstanceOf[Statement])
} else {
super.visit(n, arg)
}
}
private def isPrinted(c: Catch): Boolean = {
val block = c.getCatchBlock()
block.isEmpty || block.size > 1 || (block.size == 1 && !block(0).isInstanceOf[Throw])
}
}