Class: WAB::Impl::Expr

Inherits:

Object

• Object
• WAB::Impl::Expr

Defined in:

lib/wab/impl/expr.rb

Overview

The base class for expression that are used in the TQL where and filter clauses.

Direct Known Subclasses

BoolExpr, Not, PathExpr

Instance Method Summary

• #eval(_data) ⇒ Object

  Evaluate the expression using the supplied WAB::Data object.

• #initialize ⇒ Expr constructor

  A new instance of Expr.

• #native ⇒ Object

  Return a native Ruby representation of the expression.

Constructor Details

#initialize ⇒ Expr

Returns a new instance of Expr.

# File 'lib/wab/impl/expr.rb', line 8

def initialize()
end

Instance Method Details

#eval(_data) ⇒ Object

Evaluate the expression using the supplied WAB::Data object. Each expression subclass evaluates differently.

data

data object to evaluate against.

# File 'lib/wab/impl/expr.rb', line 15

def eval(_data)
  false
end

#native ⇒ Object

Return a native Ruby representation of the expression.

# File 'lib/wab/impl/expr.rb', line 20

def native()
  []
end