public ForAST(Token token, StatementListAST ast, VariableAST variable, AST expression1, AST expression2) : base(token)
{
this.children = ast;
this.variable = variable;
this.expression1 = expression1;
this.expression2 = expression2;
}
/// <summary>
/// Traverses a statement list AST
/// </summary>
/// <param name="ast">StatementListAST</param>
private void VisitStatementListAST(StatementListAST ast)
{
foreach (AST node in ast.children)
{
this.VisitNode(node);
}
}
/// <summary>
/// The start of the program
/// </summary>
/// <returns>Program AST</returns>
private AST Program()
{
StatementListAST list = new StatementListAST();
List <AST> nodes = this.StatementList();
foreach (AST node in nodes)
{
list.children.Add(node);
}
return(list);
}
/// <summary>
/// Gets a ForAST
/// </summary>
/// <returns>ForAST</returns>
private AST For()
{
Token token = this.currentToken;
this.ConsumeToken(TokenType.FOR);
VariableAST variable = this.Variable() as VariableAST;
this.ConsumeToken(TokenType.IN);
AST expressionAST = this.Expression();
this.ConsumeToken(TokenType.TWO_CONCECUTIVE_DOTS);
AST expressionAST2 = this.Expression();
this.ConsumeToken(TokenType.DO);
StatementListAST ast = new StatementListAST();
this.StatementList().ForEach(x => ast.children.Add(x));
this.ConsumeToken(TokenType.END);
this.ConsumeToken(TokenType.FOR);
return(new ForAST(token, ast, variable, expressionAST, expressionAST2));
}
