Class: Minjs::ECMA262::StSwitch

Inherits:
Statement show all
Defined in:
lib/minjs/ecma262/statement.rb

Overview

Base class of ECMA262 SwitchStatement element.

See Also:

Instance Attribute Summary collapse

Attributes inherited from Base

#parent

Instance Method Summary collapse

Methods inherited from Statement

#empty?, #priority, #to_exp?, #to_return?

Methods inherited from Base

#add_remove_paren, #concat

Constructor Details

#initialize(exp, blocks) ⇒ StSwitch

block: [condition, blocks]



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# File 'lib/minjs/ecma262/statement.rb', line 1223

def initialize(exp, blocks)
  @exp = exp
  @blocks = blocks
end

Instance Attribute Details

#blocks ⇒ Object (readonly)

Returns the value of attribute blocks.



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# File 'lib/minjs/ecma262/statement.rb', line 1218

def blocks
  @blocks
end

#exp ⇒ Object (readonly)

Returns the value of attribute exp.



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# File 'lib/minjs/ecma262/statement.rb', line 1218

def exp
  @exp
end

Instance Method Details

#==(obj) ⇒ Object

compare object



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# File 'lib/minjs/ecma262/statement.rb', line 1263

def ==(obj)
  self.class == obj.class and
    @exp == obj.exp and
    @blocks == obj.blocks
end

#add_paren ⇒ Object

add parenthesis if need



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# File 'lib/minjs/ecma262/statement.rb', line 1297

def add_paren
  self
end

#deep_dup ⇒ Object

duplicate object

See Also:



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# File 'lib/minjs/ecma262/statement.rb', line 1230

def deep_dup
  self.class.new(@exp.deep_dup,
                 @blocks.collect{|x, y|
                   [
                     x ? x.deep_dup : nil,
                     y ? y.deep_dup : nil
                   ]
                 })
end

#remove_paren ⇒ Object

remove parenthesis if possible



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# File 'lib/minjs/ecma262/statement.rb', line 1284

def remove_paren
  if @exp.kind_of? ExpParen
    @exp = @exp.val
  end
  @blocks.each do |b|
    if b[0] and b[0].kind_of? ExpParen
      b[0] = b[0].val
    end
  end
  self
end

#replace(from, to) ⇒ Object

Replaces children object.

See Also:



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# File 'lib/minjs/ecma262/statement.rb', line 1242

def replace(from, to)
  if @exp .eql? from
    @exp = to
  elsif @blocks .eql? from
    @blocks = to
  end
end

#to_js(options = {}) ⇒ Object

Returns a ECMAScript string containg the representation of element.

See Also:



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# File 'lib/minjs/ecma262/statement.rb', line 1271

def to_js(options = {})
  t = concat(options, :switch, "(", @exp, ")", "{")
  @blocks.each do |b|
    if b[0]
      t = concat(options, t, :case, b[0], ":", b[1])
    else
      t = concat(options, t, :default, ":", b[1])
    end
  end
  t = concat(options, t, "}")
end

#traverse(parent) {|parent, _self| ... } ⇒ Object

Traverses this children and itself with given block.

Yields:

Yield Parameters:



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# File 'lib/minjs/ecma262/statement.rb', line 1251

def traverse(parent, &blocks)
  @exp.traverse(self, &blocks)
  @blocks.each do |b|
    if b[0]
      b[0].traverse(self, &blocks)
    end
    b[1].traverse(self, &blocks)
  end
  yield parent, self
end