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



15
16
17
 
# 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 



35
36
37
 
# File 'opal/lib/opal/parser/sexp.rb', line 35

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

Instance Attribute Details

#array ⇒ Object (readonly)

Returns the value of attribute array



11
12
13
 
# File 'opal/lib/opal/parser/sexp.rb', line 11

def array
  @array
end

#source ⇒ Object

Returns the value of attribute source



13
14
15
 
# File 'opal/lib/opal/parser/sexp.rb', line 13

def source
  @source
end

Instance Method Details

#<<(other) ⇒ Object 



39
40
41
42
 
# File 'opal/lib/opal/parser/sexp.rb', line 39

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

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



62
63
64
65
66
67
68
 
# File 'opal/lib/opal/parser/sexp.rb', line 62

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

#children ⇒ Object 



27
28
29
 
# File 'opal/lib/opal/parser/sexp.rb', line 27

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

#column ⇒ Object 



76
77
78
 
# File 'opal/lib/opal/parser/sexp.rb', line 76

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

#concat(children) ⇒ Object 



49
50
51
52
 
# File 'opal/lib/opal/parser/sexp.rb', line 49

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

#dup ⇒ Object 



58
59
60
 
# File 'opal/lib/opal/parser/sexp.rb', line 58

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

#inspect ⇒ Object Also known as: to_s 



80
81
82
 
# File 'opal/lib/opal/parser/sexp.rb', line 80

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

#line ⇒ Object 



72
73
74
 
# File 'opal/lib/opal/parser/sexp.rb', line 72

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

#meta ⇒ Object 



31
32
33
 
# File 'opal/lib/opal/parser/sexp.rb', line 31

def meta
  @meta ||= {}
end

#pretty_inspect ⇒ Object 



84
85
86
 
# File 'opal/lib/opal/parser/sexp.rb', line 84

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

#push(*parts) ⇒ Object 



44
45
46
47
 
# File 'opal/lib/opal/parser/sexp.rb', line 44

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

#to_ary ⇒ Object 



54
55
56
 
# File 'opal/lib/opal/parser/sexp.rb', line 54

def to_ary
  @array
end

#type ⇒ Object 



19
20
21
 
# File 'opal/lib/opal/parser/sexp.rb', line 19

def type
  @array[0]
end

#type=(type) ⇒ Object 



23
24
25
 
# File 'opal/lib/opal/parser/sexp.rb', line 23

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