Class: Opal::Nodes::Base

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
opal/lib/opal/nodes/base.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#conditional_send, #current_indent, #empty_line, #indent, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #mid_to_jsid, #property, #valid_name?

Constructor Details

#initialize(sexp, level, compiler) ⇒ Base

Returns a new instance of Base.



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# File 'opal/lib/opal/nodes/base.rb', line 34

def initialize(sexp, level, compiler)
  @sexp = sexp
  @type = sexp.type
  @level = level
  @compiler = compiler
end

Instance Attribute Details

#compiler ⇒ Object (readonly)

Returns the value of attribute compiler.



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# File 'opal/lib/opal/nodes/base.rb', line 32

def compiler
  @compiler
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'opal/lib/opal/nodes/base.rb', line 32

def type
  @type
end

Class Method Details

.children(*names) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 20

def self.children(*names)
  names.each_with_index do |name, idx|
    define_method(name) do
      @sexp.children[idx]
    end
  end
end

.handle(*types) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 14

def self.handle(*types)
  types.each do |type|
    Base.handlers[type] = self
  end
end

.handlers ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 10

def self.handlers
  @handlers ||= {}
end

.truthy_optimize? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 28

def self.truthy_optimize?
  false
end

Instance Method Details

#add_gvar(name) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 132

def add_gvar(name)
  scope.add_scope_gvar name
end

#add_ivar(name) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 128

def add_ivar(name)
  scope.add_scope_ivar name
end

#add_local(name) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 124

def add_local(name)
  scope.add_scope_local name.to_sym
end

#add_temp(temp) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 136

def add_temp(temp)
  scope.add_scope_temp temp
end

#children ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 41

def children
  @sexp.children
end

#class_variable_owner ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 184

def class_variable_owner
  if scope
    "$nesting[#{class_variable_owner_nesting_level}]"
  else
    'Opal.Object'
  end
end

#class_variable_owner_nesting_level ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 168

def class_variable_owner_nesting_level
  cvar_scope = scope
  nesting_level = 0

  while cvar_scope && !cvar_scope.class_scope?
    # Needs only `class << self`, `module`, and `class`
    # can increase nesting, but `class` & `module` are
    # covered by `class_scope?`.
    nesting_level += 1 if cvar_scope.sclass?

    cvar_scope = cvar_scope.parent
  end

  nesting_level
end

#comments ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 192

def comments
  compiler.comments[@sexp.loc]
end

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 53

def compile
  raise 'Not Implemented'
end

#compile_to_fragments ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 45

def compile_to_fragments
  return @fragments if defined?(@fragments)

  @fragments = []
  compile
  @fragments
end

#error(msg) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 80

def error(msg)
  @compiler.error msg
end

#expr(sexp) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 108

def expr(sexp)
  @compiler.process sexp, :expr
end

#expr? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 92

def expr?
  @level == :expr
end

#expr_or_nil(sexp) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 120

def expr_or_nil(sexp)
  sexp ? expr(sexp) : 'nil'
end

#fragment(str) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 76

def fragment(str)
  Opal::Fragment.new str, scope, @sexp
end

#has_rescue_else? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 156

def has_rescue_else?
  scope.has_rescue_else?
end

#helper(name) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 140

def helper(name)
  @compiler.helper name
end

#in_ensure(&block) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 160

def in_ensure(&block)
  scope.in_ensure(&block)
end

#in_ensure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 164

def in_ensure?
  scope.in_ensure?
end

#in_while? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 148

def in_while?
  @compiler.in_while?
end

#process(sexp, level = :expr) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 104

def process(sexp, level = :expr)
  @compiler.process sexp, level
end

#push(*strs) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 57

def push(*strs)
  strs.each do |str|
    str = fragment(str) if str.is_a?(String)
    @fragments << str
  end
end

#recv(sexp) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 112

def recv(sexp)
  @compiler.process sexp, :recv
end

#recv? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 96

def recv?
  @level == :recv
end

#s(*args) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 88

def s(*args)
  @compiler.s(*args)
end

#scope ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 84

def scope
  @compiler.scope
end

#stmt(sexp) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 116

def stmt(sexp)
  @compiler.process sexp, :stmt
end

#stmt? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'opal/lib/opal/nodes/base.rb', line 100

def stmt?
  @level == :stmt
end

#unshift(*strs) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 64

def unshift(*strs)
  strs.reverse_each do |str|
    str = fragment(str) if str.is_a?(String)
    @fragments.unshift str
  end
end

#while_loop ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 152

def while_loop
  @compiler.instance_variable_get(:@while_loop)
end

#with_temp(&block) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 144

def with_temp(&block)
  @compiler.with_temp(&block)
end

#wrap(pre, post) ⇒ Object 



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# File 'opal/lib/opal/nodes/base.rb', line 71

def wrap(pre, post)
  unshift pre
  push post
end