Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLParenExpressionNode.java @ 16675:0fc43b066eee
SL/SourceAttribution: correct some omissions, and in particular add new node SLParenExpressionNode to represent a parenthesized expression; this is semantically neutral of course, but needed to account correctly for the text of such an expression (as opposed to its contents).
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Fri, 01 Aug 2014 16:30:22 -0700 |
parents | |
children | c0455554d45b |
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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/expression/SLParenExpressionNode.java Fri Aug 01 16:30:22 2014 -0700 @@ -0,0 +1,83 @@ +/* + * Copyright (c) 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.expression; + +import java.math.*; + +import com.oracle.truffle.api.frame.*; +import com.oracle.truffle.api.nodes.*; +import com.oracle.truffle.api.source.*; +import com.oracle.truffle.sl.nodes.*; +import com.oracle.truffle.sl.runtime.*; + +/** + * A {@link SLExpressionNode} that represents a parenthesized expression; it simply returns the + * value of the enclosed (child) expression. It is represented separately in the AST for the purpose + * of correct source attribution; this preserves the lexical relationship between the two + * parentheses and allows a tool to describe the expression as distinct from its contents. + */ +@NodeInfo(description = "A parenthesized expression") +public class SLParenExpressionNode extends SLExpressionNode { + + private final SLExpressionNode expression; + + public SLParenExpressionNode(SourceSection src, SLExpressionNode expression) { + super(src); + this.expression = insert(expression); + } + + @Override + public Object executeGeneric(VirtualFrame frame) { + return expression.executeGeneric(frame); + } + + @Override + public long executeLong(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeLong(frame); + } + + @Override + public BigInteger executeBigInteger(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeBigInteger(frame); + } + + @Override + public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeBoolean(frame); + } + + @Override + public String executeString(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeString(frame); + } + + @Override + public SLFunction executeFunction(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeFunction(frame); + } + + @Override + public SLNull executeNull(VirtualFrame frame) throws UnexpectedResultException { + return expression.executeNull(frame); + } +}