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#pragma once
#include "CommonTypes.h"
#include "Lexer.h"
#include "ExpressionVisitor.h"
class Expression : public IPLEnableShared<Expression>
{
public:
virtual ~Expression() {}
virtual void Print(std::ostream&) const {};
virtual void Accept(ExpressionVisitor& v) = 0;
};
// binary:= expression operator expression
class BinaryExpression : public Expression
{
public:
virtual ~BinaryExpression() {}
BinaryExpression(ExpressionPtr exprLeft, ExpressionPtr exprRight, TokenType op);
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
IPLString GetOperatorTypeAsString() const;
private:
ExpressionPtr m_Left;
ExpressionPtr 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) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
IPLString GetOperatorTypeAsString() const;
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) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
LiteralType m_Type;
bool m_BooleanValue;
double m_NumValue;
IPLString m_StringValue;
};
class IdentifierExpression : public Expression
{
public:
IdentifierExpression(IPLString& name);
virtual ~IdentifierExpression() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
protected:
IPLString m_Name;
};
class ListExpression : public Expression
{
public:
ListExpression() {};
void Push(ExpressionPtr value) { m_Values.push_back(value); };
virtual ~ListExpression() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
protected:
IPLVector<ExpressionPtr> m_Values;
};
class VariableDefinitionExpression : public IdentifierExpression
{
public:
VariableDefinitionExpression(IPLString& name, ExpressionPtr value) : IdentifierExpression(name), m_Value(value){}
virtual ~VariableDefinitionExpression() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
protected:
ExpressionPtr m_Value;
};
class BlockStatement : public ListExpression
{
public:
BlockStatement() {};
virtual ~BlockStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
};
class LabeledStatement : public Expression
{
public:
LabeledStatement(IPLString& identifier, ExpressionPtr statements);
virtual ~LabeledStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
IPLString m_Identifier;
ExpressionPtr m_Statement;
};
class IfStatement : public Expression
{
public:
IfStatement(ExpressionPtr cond, ExpressionPtr ifStatement, ExpressionPtr elseStatement);
virtual ~IfStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
ExpressionPtr m_Condition;
ExpressionPtr m_IfStatement;
ExpressionPtr m_ElseStatement;
};
class SwitchStatement : public Expression
{
public:
struct Case
{
ExpressionPtr Condition;
ExpressionPtr Body;
};
SwitchStatement(ExpressionPtr cond, IPLVector<Case>& cases, ExpressionPtr defaultCase);
virtual ~SwitchStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
ExpressionPtr m_Condition;
IPLVector<Case> m_Cases;
ExpressionPtr m_DefaultCase;
};
class WhileStatement : public Expression
{
public:
WhileStatement(ExpressionPtr cond, ExpressionPtr body, bool doWhile);
virtual ~WhileStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
ExpressionPtr m_Condition;
ExpressionPtr m_Body;
bool m_DoWhile;
};
class ForStatement : public Expression
{
public:
ForStatement(ExpressionPtr initialization, ExpressionPtr cond, ExpressionPtr iteration, ExpressionPtr body);
virtual ~ForStatement() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
ExpressionPtr m_Initialization;
ExpressionPtr m_Condition;
ExpressionPtr m_Iteration;
ExpressionPtr m_Body;
};
class FunctionDeclaration : public Expression
{
public:
FunctionDeclaration(IPLString& functionName, IPLVector<IPLString>& argumentsIdentifiers, ExpressionPtr body);
virtual ~FunctionDeclaration() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
private:
IPLString m_Name;
IPLVector<IPLString> m_ArgumentsIdentifiers;
ExpressionPtr m_Body;
};
class TopStatements : public ListExpression
{
public:
TopStatements() {}
virtual ~TopStatements() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
};
class EmptyExpression : public Expression
{
public:
EmptyExpression() {}
virtual ~EmptyExpression() {}
virtual void Print(std::ostream& os) const override;
virtual void Accept(ExpressionVisitor& v) override { v.Visit(this); }
};
inline ExpressionPtr CreateEmptyExpression() { return IPLMakeSharePtr<EmptyExpression>(); }
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