Triangle tools from the text book Programming Processors in Java.
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/*
* @(#)Visitor.java 2.1 2003/10/07
*
* Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
* Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
* and School of Computer and Math Sciences, The Robert Gordon University,
* St. Andrew Street, Aberdeen AB25 1HG, Scotland.
* All rights reserved.
*
* This software is provided free for educational use only. It may
* not be used for commercial purposes without the prior written permission
* of the authors.
*/
package Triangle.AbstractSyntaxTrees;
public interface Visitor {
// Commands
public abstract Object visitAssignCommand(AssignCommand ast, Object o);
public abstract Object visitCallCommand(CallCommand ast, Object o);
public abstract Object visitEmptyCommand(EmptyCommand ast, Object o);
public abstract Object visitIfCommand(IfCommand ast, Object o);
public abstract Object visitLetCommand(LetCommand ast, Object o);
public abstract Object visitSequentialCommand(SequentialCommand ast, Object o);
public abstract Object visitWhileCommand(WhileCommand ast, Object o);
// Expressions
public abstract Object visitArrayExpression(ArrayExpression ast, Object o);
public abstract Object visitBinaryExpression(BinaryExpression ast, Object o);
public abstract Object visitCallExpression(CallExpression ast, Object o);
public abstract Object visitCharacterExpression(CharacterExpression ast, Object o);
public abstract Object visitEmptyExpression(EmptyExpression ast, Object o);
public abstract Object visitIfExpression(IfExpression ast, Object o);
public abstract Object visitIntegerExpression(IntegerExpression ast, Object o);
public abstract Object visitLetExpression(LetExpression ast, Object o);
public abstract Object visitRecordExpression(RecordExpression ast, Object o);
public abstract Object visitUnaryExpression(UnaryExpression ast, Object o);
public abstract Object visitVnameExpression(VnameExpression ast, Object o);
// Declarations
public abstract Object visitBinaryOperatorDeclaration(BinaryOperatorDeclaration ast, Object o);
public abstract Object visitConstDeclaration(ConstDeclaration ast, Object o);
public abstract Object visitFuncDeclaration(FuncDeclaration ast, Object o);
public abstract Object visitProcDeclaration(ProcDeclaration ast, Object o);
public abstract Object visitSequentialDeclaration(SequentialDeclaration ast, Object o);
public abstract Object visitTypeDeclaration(TypeDeclaration ast, Object o);
public abstract Object visitUnaryOperatorDeclaration(UnaryOperatorDeclaration ast, Object o);
public abstract Object visitVarDeclaration(VarDeclaration ast, Object o);
// Array Aggregates
public abstract Object visitMultipleArrayAggregate(MultipleArrayAggregate ast, Object o);
public abstract Object visitSingleArrayAggregate(SingleArrayAggregate ast, Object o);
// Record Aggregates
public abstract Object visitMultipleRecordAggregate(MultipleRecordAggregate ast, Object o);
public abstract Object visitSingleRecordAggregate(SingleRecordAggregate ast, Object o);
// Formal Parameters
public abstract Object visitConstFormalParameter(ConstFormalParameter ast, Object o);
public abstract Object visitFuncFormalParameter(FuncFormalParameter ast, Object o);
public abstract Object visitProcFormalParameter(ProcFormalParameter ast, Object o);
public abstract Object visitVarFormalParameter(VarFormalParameter ast, Object o);
public abstract Object visitEmptyFormalParameterSequence(EmptyFormalParameterSequence ast, Object o);
public abstract Object visitMultipleFormalParameterSequence(MultipleFormalParameterSequence ast, Object o);
public abstract Object visitSingleFormalParameterSequence(SingleFormalParameterSequence ast, Object o);
// Actual Parameters
public abstract Object visitConstActualParameter(ConstActualParameter ast, Object o);
public abstract Object visitFuncActualParameter(FuncActualParameter ast, Object o);
public abstract Object visitProcActualParameter(ProcActualParameter ast, Object o);
public abstract Object visitVarActualParameter(VarActualParameter ast, Object o);
public abstract Object visitEmptyActualParameterSequence(EmptyActualParameterSequence ast, Object o);
public abstract Object visitMultipleActualParameterSequence(MultipleActualParameterSequence ast, Object o);
public abstract Object visitSingleActualParameterSequence(SingleActualParameterSequence ast, Object o);
// Type Denoters
public abstract Object visitAnyTypeDenoter(AnyTypeDenoter ast, Object o);
public abstract Object visitArrayTypeDenoter(ArrayTypeDenoter ast, Object o);
public abstract Object visitBoolTypeDenoter(BoolTypeDenoter ast, Object o);
public abstract Object visitCharTypeDenoter(CharTypeDenoter ast, Object o);
public abstract Object visitErrorTypeDenoter(ErrorTypeDenoter ast, Object o);
public abstract Object visitSimpleTypeDenoter(SimpleTypeDenoter ast, Object o);
public abstract Object visitIntTypeDenoter(IntTypeDenoter ast, Object o);
public abstract Object visitRecordTypeDenoter(RecordTypeDenoter ast, Object o);
public abstract Object visitMultipleFieldTypeDenoter(MultipleFieldTypeDenoter ast, Object o);
public abstract Object visitSingleFieldTypeDenoter(SingleFieldTypeDenoter ast, Object o);
// Literals, Identifiers and Operators
public abstract Object visitCharacterLiteral(CharacterLiteral ast, Object o);
public abstract Object visitIdentifier(Identifier ast, Object o);
public abstract Object visitIntegerLiteral(IntegerLiteral ast, Object o);
public abstract Object visitOperator(Operator ast, Object o);
// Value-or-variable names
public abstract Object visitDotVname(DotVname ast, Object o);
public abstract Object visitSimpleVname(SimpleVname ast, Object o);
public abstract Object visitSubscriptVname(SubscriptVname ast, Object o);
// Programs
public abstract Object visitProgram(Program ast, Object o);
}