QueryValExpr Class Reference

Concrete class for AST Node representing a query 'val' expression. More...

#include <Ast.hpp>

Inheritance diagram for QueryValExpr:

List of all members.

Public Member Functions
	QueryValExpr (const QualifiedType &type)
	Default constructor.
Private Member Functions
virtual void	visit (Expr::Visitor &visitor) const
	Abstract visitor function.

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Detailed Description

Concrete class for AST Node representing a query 'val' expression.

For example:

        local y = { @name::(true) && @age::((val > 25) && (val < 35))};

Here, the \'val\' is a special identifier representing the value of the current pair being queried.

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Constructor & Destructor Documentation

QueryValExpr

(

const QualifiedType &

type

)

[inline]

Default constructor.

Parameters:

type	Expression type

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Member Function Documentation

void visit

(

Expr::Visitor &

visitor

)

const [private, virtual]

Abstract visitor function.

Parameters:

visitor

The visitor object.

Implements Expr.

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The documentation for this class was generated from the following files:

• /home/renji/Data/projects/zenlang/sources/zbl/Ast.hpp
• /home/renji/Data/projects/zenlang/sources/zbl/Ast.cpp