Mercurial > hg > truffle
diff graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/FunctionBodyNode.java @ 12752:71991b7a0f14
SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 11 Nov 2013 21:34:44 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/FunctionBodyNode.java Mon Nov 11 21:34:44 2013 +0100 @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.truffle.sl.nodes; + +import com.oracle.truffle.api.frame.*; +import com.oracle.truffle.api.nodes.*; + +public class FunctionBodyNode extends TypedNode { + + @Child private StatementNode body; + @Child private TypedNode returnValue; + @Child private StatementNode writeArguments; + + private FrameDescriptor frameDescriptor; + + public FunctionBodyNode(FrameDescriptor frameDescriptor, StatementNode body, TypedNode returnValue, String[] parameterNames) { + this.frameDescriptor = frameDescriptor; + this.body = adoptChild(body); + this.returnValue = adoptChild(returnValue); + this.writeArguments = adoptChild(new BlockNode(createWriteArguments(parameterNames))); + } + + @Override + public Object executeGeneric(VirtualFrame frame) { + writeArguments.executeVoid(frame); + try { + body.executeVoid(frame); + } catch (ReturnException ex) { + // Nothing to do, we just need to return. + } + if (returnValue != null) { + return returnValue.executeGeneric(frame); + } else { + return null; + } + } + + @Override + public Node copy() { + FunctionBodyNode copy = (FunctionBodyNode) super.copy(); + copy.frameDescriptor = frameDescriptor.shallowCopy(); + return copy; + } + + private StatementNode[] createWriteArguments(String[] parameterNames) { + StatementNode[] writeNodes = new StatementNode[parameterNames.length]; + for (int i = 0; i < parameterNames.length; i++) { + FrameSlot frameSlot = frameDescriptor.findOrAddFrameSlot(parameterNames[i]); + writeNodes[i] = WriteLocalNodeFactory.create(frameSlot, new ReadArgumentNode(i)); + } + return writeNodes; + } + + public FrameDescriptor getFrameDescriptor() { + return frameDescriptor; + } + +}