45 lines
1.3 KiB
Java
45 lines
1.3 KiB
Java
/*
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* @(#)Expression.java 2.1 2003/10/07
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*
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* Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
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* Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
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* and School of Computer and Math Sciences, The Robert Gordon University,
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* St. Andrew Street, Aberdeen AB25 1HG, Scotland.
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* All rights reserved.
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*
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* This software is provided free for educational use only. It may
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* not be used for commercial purposes without the prior written permission
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* of the authors.
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*/
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package triangle.abstractSyntaxTrees.expressions;
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import triangle.abstractSyntaxTrees.AbstractSyntaxTree;
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import triangle.abstractSyntaxTrees.types.TypeDenoter;
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import triangle.abstractSyntaxTrees.visitors.ExpressionVisitor;
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import triangle.syntacticAnalyzer.SourcePosition;
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public abstract class Expression extends AbstractSyntaxTree {
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public Expression(SourcePosition position) {
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super(position);
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type = null;
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}
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public TypeDenoter type;
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public boolean isLiteral() {
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return false;
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}
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public int getValue() {
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throw new UnsupportedOperationException();
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}
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public abstract <TArg, TResult> TResult visit(ExpressionVisitor<TArg, TResult> visitor, TArg arg);
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public <TArg, TResult> TResult visit(ExpressionVisitor<TArg, TResult> visitor) {
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return visit(visitor, null);
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}
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}
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