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#pragma once
#include "CommonTypes.h"
#include "Lexer.h"
class Expression : public IPLEnableShared<Expression>
{
public:
virtual ~Expression() {}
virtual void Print(std::ostream& os) {};
};
using ExpressionPtr = IPLSharedPtr<Expression>;
// binary:= expression operator expression
class BinaryExpression : public Expression
{
public:
virtual ~BinaryExpression() {}
BinaryExpression(IPLSharedPtr<Expression> exprLeft, IPLSharedPtr<Expression> exprRight, TokenType op);
virtual void Print(std::ostream& os);
private:
IPLString GetOperatorTypeAsString();
private:
IPLSharedPtr<Expression> m_Left;
IPLSharedPtr<Expression> m_Right;
TokenType m_Operator;
};
// binary:= expression operator |
// operator expression
class UnaryExpression : public Expression
{
public:
virtual ~UnaryExpression() {}
UnaryExpression(IPLSharedPtr<Expression> expr, TokenType op, bool suffix);
virtual void Print(std::ostream& os);
private:
IPLString GetOperatorTypeAsString();
private:
IPLSharedPtr<Expression> m_Expr;
TokenType m_Operator;
bool m_Suffix;
};
// literal:= number | string | true | false | null | undefined
class LiteralExpression : public Expression
{
public:
enum LiteralType
{
Number,
String,
Boolean,
Null,
Undefined,
};
virtual ~LiteralExpression() {}
LiteralExpression(double);
LiteralExpression(IPLString&);
LiteralExpression(bool);
LiteralExpression(TokenType type);
virtual void Print(std::ostream& os);
private:
double m_NumValue;
IPLString m_StringValue;
bool m_BooleanValue;
LiteralType m_Type;
};
class IdentifierExpression : public Expression
{
public:
IdentifierExpression(IPLString name, ExpressionPtr value);
virtual ~IdentifierExpression() {}
virtual void Print(std::ostream& os);
private:
IPLString m_Name;
ExpressionPtr m_Value;
};
class ListExpression : public Expression
{
public:
ListExpression() {};
void Push(ExpressionPtr value) { m_Values.push_back(value); };
virtual ~ListExpression() {}
virtual void Print(std::ostream& os);
private:
IPLVector<ExpressionPtr> m_Values;
};
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