Class: Fluid::Environment

Inherits:
Hash
  • Object
show all
Defined in:
lib/fluid.rb

Overview

An environment holds variable->value bindings. Each variable name is an entry in a hash table. It is associated with a stack of values. Environments are manipulated by objects of class Var.

Instance Method Summary collapse

Instance Method Details

#create(var_name) ⇒ Object

:nodoc:



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# File 'lib/fluid.rb', line 15

def create(var_name)  self[var_name] = []; end

#destroy(var_name) ⇒ Object 



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# File 'lib/fluid.rb', line 16

def destroy(var_name)  delete(var_name); end

#get(var_name) ⇒ Object 



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# File 'lib/fluid.rb', line 20

def get(var_name)  self[var_name][-1]; end

#has?(var_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluid.rb', line 17

def has?(var_name)  has_key?(var_name); end

#pop_binding(var_name) ⇒ Object 



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# File 'lib/fluid.rb', line 22

def pop_binding(var_name)   self[var_name].pop; end

#push_binding(var_name, var_value) ⇒ Object 



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# File 'lib/fluid.rb', line 21

def push_binding(var_name, var_value)  self[var_name].push(var_value); end

#set(var_name, value) ⇒ Object 



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# File 'lib/fluid.rb', line 19

def set(var_name, value)   self[var_name][-1] = value; end

#unbound?(var_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluid.rb', line 18

def unbound?(var_name)  self[var_name] == []; end