Class: Opal::Sexp

Inherits:
Object
  • Object
show all
Defined in:
opal/lib/opal/parser/sexp.rb

Overview

[Opal::Sexp] is used to build up the syntax tree inside [Opal::Parser]. The compiler then steps through the sexp trees to generate the javascript code.

For example, an array of integers [1, 2] might be represented by:

s(:array, s(:int, 1), s(:int, 2))

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Sexp

Returns a new instance of Sexp

[View source]

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# File 'opal/lib/opal/parser/sexp.rb', line 15

def initialize(args)
  @array = args
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args, &block) ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 31

def method_missing(sym, *args, &block)
  @array.send sym, *args, &block
end

Instance Attribute Details

#array ⇒ Object (readonly)

Returns the value of attribute array


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# File 'opal/lib/opal/parser/sexp.rb', line 11

def array
  @array
end

#source ⇒ Object

Returns the value of attribute source


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# File 'opal/lib/opal/parser/sexp.rb', line 13

def source
  @source
end

Instance Method Details

#<<(other) ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 35

def <<(other)
  @array << other
  self
end

#==(other) ⇒ Object Also known as: eql?

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# File 'opal/lib/opal/parser/sexp.rb', line 58

def ==(other)
  if other.is_a? Sexp
    @array == other.array
  else
    @array == other
  end
end

#children ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 27

def children
  @array[1..-1]
end

#column ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 72

def column
  @source && @source[1]
end

#concat(children) ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 45

def concat(children)
  @array.concat(children)
  self
end

#dup ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 54

def dup
  Sexp.new(@array.dup)
end

#inspect ⇒ Object Also known as: to_s

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# File 'opal/lib/opal/parser/sexp.rb', line 76

def inspect
  "(#{@array.map { |e| e.inspect }.join ', '})"
end

#line ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 68

def line
  @source && @source[0]
end

#pretty_inspect ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 80

def pretty_inspect
  "(#{line ? "#{line} " : ''}#{@array.map { |e| e.inspect }.join ', '})"
end

#push(*parts) ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 40

def push(*parts)
  @array.push(*parts)
  self
end

#to_ary ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 50

def to_ary
  @array
end

#type ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 19

def type
  @array[0]
end

#type=(type) ⇒ Object

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# File 'opal/lib/opal/parser/sexp.rb', line 23

def type=(type)
  @array[0] = type
end