/**

* miniJava Abstract Syntax Tree classes

* @author prins

* @version COMP 520 (v2.2)

*/

package miniJava.AbstractSyntaxTrees;

/**

* An implementation of the Visitor interface provides a method visitX

* for each non-abstract AST class X.

*/

public interface Visitor<ArgType,ResultType> {

// Package

public ResultType visitPackage(Package prog, ArgType arg);

// Declarations

public ResultType visitClassDecl(ClassDecl cd, ArgType arg);

public ResultType visitFieldDecl(FieldDecl fd, ArgType arg);

public ResultType visitMethodDecl(MethodDecl md, ArgType arg);

public ResultType visitParameterDecl(ParameterDecl pd, ArgType arg);

public ResultType visitVarDecl(VarDecl decl, ArgType arg);

// Types

public ResultType visitBaseType(BaseType type, ArgType arg);

public ResultType visitClassType(ClassType type, ArgType arg);

public ResultType visitArrayType(ArrayType type, ArgType arg);

// Statements

public ResultType visitBlockStmt(BlockStmt stmt, ArgType arg);

public ResultType visitVardeclStmt(VarDeclStmt stmt, ArgType arg);

public ResultType visitAssignStmt(AssignStmt stmt, ArgType arg);

public ResultType visitCallStmt(CallStmt stmt, ArgType arg);

public ResultType visitReturnStmt(ReturnStmt stmt, ArgType arg);

public ResultType visitIfStmt(IfStmt stmt, ArgType arg);

public ResultType visitWhileStmt(WhileStmt stmt, ArgType arg);

// Expressions

public ResultType visitUnaryExpr(UnaryExpr expr, ArgType arg);

public ResultType visitBinaryExpr(BinaryExpr expr, ArgType arg);

public ResultType visitRefExpr(RefExpr expr, ArgType arg);

public ResultType visitCallExpr(CallExpr expr, ArgType arg);

public ResultType visitLiteralExpr(LiteralExpr expr, ArgType arg);

public ResultType visitNewObjectExpr(NewObjectExpr expr, ArgType arg);

public ResultType visitNewArrayExpr(NewArrayExpr expr, ArgType arg);

// References

public ResultType visitThisRef(ThisRef ref, ArgType arg);

public ResultType visitIdRef(IdRef ref, ArgType arg);

public ResultType visitQRef(QualRef ref, ArgType arg);

public ResultType visitIxRef(IxRef ref, ArgType arg);

// Terminals

public ResultType visitIdentifier(Identifier id, ArgType arg);

public ResultType visitOperator(Operator op, ArgType arg);

public ResultType visitIntLiteral(IntLiteral num, ArgType arg);

public ResultType visitBooleanLiteral(BooleanLiteral bool, ArgType arg);

public ResultType visitNullLiteral(NullLiteral nullLit, ArgType arg);

}