From 1df22a637e5c5ac090f7d90c5c666da1b22964d5 Mon Sep 17 00:00:00 2001
From: martin dobrev <martindobrev0@gmail.com>
Date: Tue, 11 Sep 2018 09:38:31 +0300
Subject: Implement parsing for flow control elements like if, for etc.

---
 JSImpl/src/Expression.h | 111 ++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 97 insertions(+), 14 deletions(-)

(limited to 'JSImpl/src/Expression.h')

diff --git a/JSImpl/src/Expression.h b/JSImpl/src/Expression.h
index 3b68522..51cdd21 100644
--- a/JSImpl/src/Expression.h
+++ b/JSImpl/src/Expression.h
@@ -8,7 +8,7 @@ class Expression : public IPLEnableShared<Expression>
 
 	public:
 		virtual ~Expression() {}
-		virtual void Print(std::ostream& os) {};
+		virtual void Print(std::ostream& os) const {};
 };
 
 using ExpressionPtr = IPLSharedPtr<Expression>;
@@ -18,13 +18,13 @@ class BinaryExpression : public Expression
 {
 public:
 	virtual ~BinaryExpression() {}
-	BinaryExpression(IPLSharedPtr<Expression> exprLeft, IPLSharedPtr<Expression> exprRight, TokenType op);
-	virtual void Print(std::ostream& os);
+	BinaryExpression(ExpressionPtr exprLeft, ExpressionPtr exprRight, TokenType op);
+	virtual void Print(std::ostream& os) const override;
 private:
-	IPLString GetOperatorTypeAsString();
+	IPLString GetOperatorTypeAsString() const;
 private:
-	IPLSharedPtr<Expression> m_Left;
-	IPLSharedPtr<Expression> m_Right;
+	ExpressionPtr m_Left;
+	ExpressionPtr m_Right;
 	TokenType m_Operator;
 };
 
@@ -35,9 +35,9 @@ class UnaryExpression : public Expression
 public:
 	virtual ~UnaryExpression() {}
 	UnaryExpression(IPLSharedPtr<Expression> expr, TokenType op, bool suffix);
-	virtual void Print(std::ostream& os);
+	virtual void Print(std::ostream& os) const override;
 private:
-	IPLString GetOperatorTypeAsString();
+	IPLString GetOperatorTypeAsString() const;
 private:
 	IPLSharedPtr<Expression> m_Expr;
 	TokenType m_Operator;
@@ -61,7 +61,7 @@ public:
 	LiteralExpression(IPLString&);
 	LiteralExpression(bool);
 	LiteralExpression(TokenType type);
-	virtual void Print(std::ostream& os);
+	virtual void Print(std::ostream& os) const override;
 private:
 	double m_NumValue;
 	IPLString m_StringValue;
@@ -73,10 +73,10 @@ private:
 class IdentifierExpression : public Expression
 {
 public:
-	IdentifierExpression(IPLString name, ExpressionPtr value);
+	IdentifierExpression(IPLString& name, ExpressionPtr value);
 	virtual ~IdentifierExpression() {}
-	virtual void Print(std::ostream& os);
-private:
+	virtual void Print(std::ostream& os) const override;
+protected:
 	IPLString m_Name;
 	ExpressionPtr m_Value;
 };
@@ -87,7 +87,90 @@ public:
 	ListExpression() {};
 	void Push(ExpressionPtr value) { m_Values.push_back(value); };
 	virtual ~ListExpression() {}
-	virtual void Print(std::ostream& os);
-private:
+	virtual void Print(std::ostream& os) const override;
+protected:
 	IPLVector<ExpressionPtr> m_Values;
 };
+
+class VariableDefinitionExpression : public IdentifierExpression
+{
+public:
+	VariableDefinitionExpression(IPLString& name, ExpressionPtr value) : IdentifierExpression(name, value){}
+	virtual ~VariableDefinitionExpression() {}
+	virtual void Print(std::ostream& os) const override;
+};
+
+class BlockStatement : public ListExpression
+{
+public:
+	BlockStatement() {};
+	virtual ~BlockStatement() {}
+	virtual void Print(std::ostream& os) const override;
+private:
+};
+
+class LabeledStatement : public Expression
+{
+public:
+	LabeledStatement(IPLString& identifier, ExpressionPtr statements);
+	virtual ~LabeledStatement() {}
+	virtual void Print(std::ostream& os) const override;
+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;
+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;
+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;
+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;
+private:
+	ExpressionPtr m_Initialization;
+	ExpressionPtr m_Condition;
+	ExpressionPtr m_Iteration;
+	ExpressionPtr m_Body;
+};
+
-- 
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