| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.etch.compiler.ast; |
| |
| import java.util.Map; |
| |
| import org.apache.etch.compiler.Backend; |
| import org.apache.etch.compiler.ParseException; |
| |
| |
| /** |
| * An extern declaration from the etch idl. |
| */ |
| public class Extern extends ParamList<Service> |
| { |
| /** |
| * @param intf |
| * @param name |
| * @param opts |
| */ |
| public Extern( Service intf, Name name, Map<String, Opt> opts ) |
| { |
| super( intf, name, opts ); |
| |
| vname = intf.parent().name().name.replace( '.', '_' )+'_'+intf.name()+'_'+name; |
| fqname = intf.parent().name().name+'.'+intf.name().name+'.'+name.name; |
| } |
| |
| private final String vname; |
| |
| private final String fqname; |
| |
| @Override |
| public Service service() |
| { |
| return parent(); |
| } |
| |
| @Override |
| public void check() throws ParseException |
| { |
| checkTypeName( name() ); |
| |
| // nothing to do |
| } |
| |
| @Override |
| public void dump( String indent ) |
| { |
| System.out.printf( "%sextern %s\n", indent, name() ); |
| } |
| |
| @Override |
| public String fqname() |
| { |
| return fqname; |
| } |
| |
| @Override |
| public String efqname( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| return null; |
| return opt.xname.image; |
| } |
| |
| @Override |
| public String vname( Backend helper ) |
| { |
| return helper.mtvname( vname ); |
| } |
| |
| /** |
| * @param helper |
| * @return the extern's serializer's name. |
| */ |
| public String sname( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| // TODO need to throw the right thing... |
| throw new UnsupportedOperationException( String.format( |
| "no extern type defined for binding %s: %s at line %d", |
| lang, name().name, name().token.beginLine ) ); |
| return opt.serializer.image; |
| } |
| |
| /** |
| * @param helper |
| * @return true if the extern needs an import. |
| */ |
| public boolean hasImport( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| return false; |
| return opt.xnameImport.image.length() > 0; |
| } |
| |
| /** |
| * @param helper |
| * @return the extern's import. |
| */ |
| public String getImport( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| return null; |
| return opt.xnameImport.image; |
| } |
| |
| /** |
| * @param helper |
| * @return true if the extern's serializer needs an import. |
| */ |
| public boolean hasSerializerImport( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| return false; |
| return opt.serializerImport.image.length() > 0; |
| } |
| |
| /** |
| * @param helper |
| * @return the extern's serializer's import. |
| */ |
| public String getSerializerImport( Backend helper ) |
| { |
| String lang = helper.getLang(); |
| org.apache.etch.compiler.opt.Extern opt = (org.apache.etch.compiler.opt.Extern) getOpt( "Extern."+lang ); |
| if (opt == null) |
| return null; |
| return opt.serializerImport.image; |
| } |
| |
| @Override |
| public void treewalk( TreeWalker walker ) throws ParseException |
| { |
| walker.doExtern( this ); |
| } |
| } |