root/trunk/ProjectFortress/src/com/sun/fortress/compiler/index/DeclaredFunction.java @ 3915

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    Copyright 2009 Sun Microsystems, Inc.,
    4150 Network Circle, Santa Clara, California 95054, U.S.A.
    All rights reserved.

    U.S. Government Rights - Commercial software.
    Government users are subject to the Sun Microsystems, Inc. standard
    license agreement and applicable provisions of the FAR and its supplements.

    Use is subject to license terms.

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    trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
 ******************************************************************************/

package com.sun.fortress.compiler.index;

import java.util.Collections;
import java.util.List;

import com.sun.fortress.nodes.ArrowType;
import com.sun.fortress.nodes.BaseType;
import com.sun.fortress.nodes.Expr;
import com.sun.fortress.nodes.FnDecl;
import com.sun.fortress.nodes.IdOrOpOrAnonymousName;
import com.sun.fortress.nodes.Node;
import com.sun.fortress.nodes.NodeDepthFirstVisitor;
import com.sun.fortress.nodes.NodeUpdateVisitor;
import com.sun.fortress.nodes.Param;
import com.sun.fortress.nodes.StaticArg;
import com.sun.fortress.nodes.StaticParam;
import com.sun.fortress.nodes.Type;
import com.sun.fortress.nodes_util.Span;
import com.sun.fortress.nodes_util.NodeUtil;
import com.sun.fortress.useful.NI;

import edu.rice.cs.plt.lambda.SimpleBox;
import edu.rice.cs.plt.tuple.Option;

public class DeclaredFunction extends Function {
    private final FnDecl _ast;

    public DeclaredFunction(FnDecl ast) {
      _ast = ast;
      putThunk(SimpleBox.make(NodeUtil.getReturnType(_ast)));
    }

    public FnDecl ast() { return _ast; }

    @Override
    protected String mandatoryToString() {
        return "function " + ast();
    }
    
    @Override
    protected IdOrOpOrAnonymousName mandatoryToUndecoratedName() {
        return ast().getHeader().getName();
    }

    @Override
    public Span getSpan() { return NodeUtil.getSpan(_ast); }

        @Override
        public Option<Expr> body() {
                return _ast.accept(new NodeDepthFirstVisitor<Option<Expr>>(){
                        @Override
                        public Option<Expr> defaultCase(Node that) {
                                return Option.none();
                        }
                        @Override
                        public Option<Expr> forFnDecl(FnDecl that) {
                            return that.getBody();
                        }
                });
        }

        @Override
        public List<Param> parameters() {
                return NodeUtil.getParams(_ast);
        }

        @Override
        public List<StaticParam> staticParameters() {
                return NodeUtil.getStaticParams(_ast);
        }

        @Override
        public List<BaseType> thrownTypes() {
                if( NodeUtil.getThrowsClause(_ast).isNone() )
                        return Collections.emptyList();
                else
                        return Collections.unmodifiableList(NodeUtil.getThrowsClause(_ast).unwrap());
        }

        @Override
        public Functional instantiate(List<StaticParam> params, List<StaticArg> args) {
                // TODO Auto-generated method stub
                return NI.nyi();
        }

        @Override
        public Functional acceptNodeUpdateVisitor(NodeUpdateVisitor visitor) {
                return new DeclaredFunction((FnDecl)this._ast.accept(visitor));
        }

 }