Class: PgVerify::Model::Assignment

Inherits:
Object
  • Object
show all
Defined in:
lib/pg-verify/model/assignment.rb

Constant Summary collapse

ASSIGN_OPERATOR = 
':='

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(assigned_variable, expression) ⇒ Assignment

Returns a new instance of Assignment.



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# File 'lib/pg-verify/model/assignment.rb', line 23

def initialize(assigned_variable, expression)
    @assigned_variable, @expression = assigned_variable, expression
end

Instance Attribute Details

#assigned_variable ⇒ Object

The name of the variable which is assigned a value



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# File 'lib/pg-verify/model/assignment.rb', line 10

def assigned_variable
  @assigned_variable
end

#expression ⇒ Object

The Model::Expression which of this assignment



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# File 'lib/pg-verify/model/assignment.rb', line 13

def expression
  @expression
end

Class Method Details

.from_string(string) ⇒ Object 



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# File 'lib/pg-verify/model/assignment.rb', line 15

def self.from_string(string)
    raise "Not an assignment: #{string}" unless string.include?(ASSIGN_OPERATOR)
    split = string.split(ASSIGN_OPERATOR).map(&:strip)
    assigned_variable = split[0].to_sym
    expression = Expression.from_string(split[1])
    return Assignment.new(assigned_variable, expression)
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/pg-verify/model/assignment.rb', line 27

def to_s()
    return "#{assigned_variable} #{ASSIGN_OPERATOR} #{expression.to_s}"
end