76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
/*
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* ConstantExpression.h
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*
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* Created on: Dec 5, 2012
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* Author: attero
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*/
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#ifndef CONSTANTEXPRESSION_H_
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#define CONSTANTEXPRESSION_H_
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#include "ASTExpression.h"
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#include <iostream>
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#include "../Context.h"
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/**
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* ConstantExpression class is used to store complex expression, which are actually
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* SenchaObjects. Constant Expressions are made in parser when it encounter some of primitives
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* like string literal or numbers, they also can be made on already made SenchaObject.
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* ConstantExpression is a part of AST, so it must have parent. It's a node in which it is build.
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* It implements four virtual functions: debug, evaluate, execute_quietly.
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* It stores the value of expression.
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*/
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class ConstantExpression : public ASTExpression {
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public:
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/**
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* Constructor which sets value to null SenchaObject.o it
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* @param number value will be set to SenchaObject representing this number
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*/
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ConstantExpression();
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/**
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*Constructor which creates SenchaObject(number) and sets value to it
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* @param number value will be set to SenchaObject representing this number
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*/
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ConstantExpression( int number) ;
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/**
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* Constructor which creates SenchaObject(number) and sets value to it
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* @param number value will be set to SenchaObject representing this number
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*/
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ConstantExpression( double number) ;
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/**
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* Constructor which creates SenchaObject(text) and sets value to it
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* @param text value will be set to SenchaObject representing this text
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*/
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ConstantExpression( std::string text);
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/**
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* Constructor which sets value to given value
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* @param value this->value will be set to value
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*/
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ConstantExpression(SenchaObject value);
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/** Here's value of constant expression */
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SenchaObject value;
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/** Implements visitor pattern */
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virtual void accept(Visitor * visitor);
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virtual ~ConstantExpression();
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/**Returns value set in one of constructors */
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virtual SenchaObject evaluate();
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/**Prints representation of value */
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virtual void execute() ;
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/**Does nothing */
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virtual void execute_quietly() ;
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};
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#endif /* CONSTANTEXPRESSION_H_ */
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