Class: Ppr::Assign

Inherits:
Macro
  • Object
show all
Defined in:
lib/ppr/ppr_core.rb

Overview

Describes an assignment macro of the ruby preprocessor.

Constant Summary

Constants inherited from Macro

Macro::E_NUMBER, Macro::E_TYPE

Instance Attribute Summary

Attributes inherited from Macro

#name

Instance Method Summary collapse

Methods inherited from Macro

#add, e_message, #e_message, #e_number, #e_shift_number, #e_type?, #empty?, #final?, #generate, #to_quoted

Constructor Details

#initialize(name, num, ppr, expand: ":<") ⇒ Assign

Creates a new assignment macro whose assigned variable is var, starting at line number num generated from preprocessor ppr.

Other parameters:

expand

redefines the expand operator string.



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# File 'lib/ppr/ppr_core.rb', line 276

def initialize(name, num, ppr, expand: ":<")
    super(name,num,ppr,expand: expand)
    # Creates the attribute which will be assigned.
    @var_sym = Ppr.to_attribute(name)
end

Instance Method Details

#apply(i_number) ⇒ Object

Applies the macro invoked at line number i_number, its result in assigned to the class variable.



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# File 'lib/ppr/ppr_core.rb', line 284

def apply(i_number)
    # Expands the macro.
    line = super(i_number)
    # Assign the result to the variable.
    @ppr.parameter_set(@var_sym,line)
    # No modification of the output file, so return an empty string.
    return ""
end