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view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/call/SLCallNode.java @ 13836:64c77f0577bb
More documentation and improvements of Simple Language
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Thu, 30 Jan 2014 17:53:27 -0800 |
parents | b16ec83edc73 |
children | f9b934e1e172 |
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/* * Copyright (c) 2013, 2014, 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.call; import com.oracle.truffle.api.dsl.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.sl.nodes.*; import com.oracle.truffle.sl.runtime.*; /** * The node for a function call in SL. Since SL has first class functions, the {@link SLFunction * target function} can be computed by an {@link #functionNode arbitrary expression}. This node is * responsible for evaluating this expression, as well as evaluating the {@link #argumentNodes * arguments}. The actual call dispatch is then delegated to a chain of * {@link SLAbstractDispatchNode}s that form a polymorphic inline cache. */ @NodeInfo(shortName = "call") public final class SLCallNode extends SLExpressionNode { public static SLCallNode create(SLExpressionNode function, SLExpressionNode[] arguments) { return new SLCallNode(function, arguments, new SLUninitializedDispatchNode()); } @Child protected SLExpressionNode functionNode; @Children protected final SLExpressionNode[] argumentNodes; @Child protected SLAbstractDispatchNode dispatchNode; private SLCallNode(SLExpressionNode functionNode, SLExpressionNode[] argumentNodes, SLAbstractDispatchNode dispatchNode) { this.functionNode = adoptChild(functionNode); this.argumentNodes = adoptChildren(argumentNodes); this.dispatchNode = adoptChild(dispatchNode); } @Override @ExplodeLoop public Object executeGeneric(VirtualFrame frame) { SLFunction function = evaluateFunction(frame); Object[] argumentValues = new Object[argumentNodes.length]; for (int i = 0; i < argumentNodes.length; i++) { argumentValues[i] = argumentNodes[i].executeGeneric(frame); } SLArguments arguments = new SLArguments(argumentValues); return dispatchNode.executeDispatch(frame, function, arguments); } private SLFunction evaluateFunction(VirtualFrame frame) { try { /* * The function node must evaluate to a SLFunction value, so we call * function-specialized method. */ return functionNode.executeFunction(frame); } catch (UnexpectedResultException ex) { /* * The function node evaluated to a non-function result. This is a type error in the SL * program. We report it with the same exception that Truffle DSL generated nodes use to * report type errors. */ throw new UnsupportedSpecializationException(this, ex.getResult()); } } }