com.mysema.scalagen.Initializers.scala Maven / Gradle / Ivy
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/*
* 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 Initializers extends Initializers
/**
* Initializers normalizes initializer blocks
*/
class Initializers extends UnitTransformerBase {
def transform(cu: CompilationUnit): CompilationUnit = {
cu.accept(this, cu).asInstanceOf[CompilationUnit]
}
override def visit(ci: ClassOrInterfaceDecl, cu: CompilationUnit): Node = {
val t = super.visit(ci, cu).asInstanceOf[ClassOrInterfaceDecl]
if (t.getMembers == null) {
return t
}
val initializers = t.getMembers.collect { case i: Initializer => i }
if (!initializers.isEmpty) {
val fields = t.getMembers.collect { case f: Field => f }
val variables = fields.flatMap(_.getVariables).map(v => (v.getId.getName, v)).toMap
for (i <- initializers) {
i.getBlock.setStmts(i.getBlock.getStmts.filter(_ match {
case Stmt((t: Name) set v) if variables.contains(t.getName) => {
variables(t.getName).setInit(v)
false
}
case _ => true
}))
}
// remove empty initializers
val emptyInitializerBlocks = initializers.filter(_.getBlock.isEmpty)
t.setMembers( t.getMembers.filterNot(emptyInitializerBlocks.contains) )
}
t
}
}