Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/SLExpressionNode.java @ 16961:a1427e40deaf
Truffle/Instrumentation: some Javadoc revistions; minor code cleanups; remove one redundant operation; add tracing to the LineLocation maps.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 26 Aug 2014 13:54:53 -0700 |
parents | 7661cc464239 |
children | 997899955e72 |
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/* * Copyright (c) 2012, 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; import java.math.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.dsl.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.instrument.*; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.source.*; import com.oracle.truffle.sl.nodes.instrument.*; import com.oracle.truffle.sl.runtime.*; /** * Base class for all SL nodes that produce a value and therefore benefit from type specialization. * The annotation {@link TypeSystemReference} specifies the SL types. Specifying it here defines the * type system for all subclasses. */ @TypeSystemReference(SLTypes.class) @NodeInfo(description = "The abstract base node for all expressions") public abstract class SLExpressionNode extends SLStatementNode { public SLExpressionNode(SourceSection src) { super(src); } /** * The execute method when no specialization is possible. This is the most general case, * therefore it must be provided by all subclasses. */ public abstract Object executeGeneric(VirtualFrame frame); /** * When we use an expression at places where a {@link SLStatementNode statement} is already * sufficient, the return value is just discarded. */ @Override public void executeVoid(VirtualFrame frame) { executeGeneric(frame); } /* * Execute methods for specialized types. They all follow the same pattern: they call the * generic execution method and then expect a result of their return type. Type-specialized * subclasses overwrite the appropriate methods. */ public long executeLong(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectLong(executeGeneric(frame)); } public BigInteger executeBigInteger(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectBigInteger(executeGeneric(frame)); } public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectBoolean(executeGeneric(frame)); } public String executeString(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectString(executeGeneric(frame)); } public SLFunction executeFunction(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectSLFunction(executeGeneric(frame)); } public SLNull executeNull(VirtualFrame frame) throws UnexpectedResultException { return SLTypesGen.SLTYPES.expectSLNull(executeGeneric(frame)); } @Override public Probe probe(ExecutionContext context) { Node parent = getParent(); if (parent == null) throw new IllegalStateException("Cannot probe a node without a parent"); if (parent instanceof SLExpressionWrapper) return ((SLExpressionWrapper) parent).getProbe(); SLExpressionWrapper wrapper = new SLExpressionWrapper((SLContext) context, this); this.replace(wrapper); wrapper.insertChild(); return wrapper.getProbe(); } }