Class: Opal::Fragment

Inherits:
Object show all
Defined in:
opal/lib/opal/fragment.rb

Overview

A fragment holds a string of generated javascript that will be written to the destination. It also keeps hold of the original sexp from which it was generated. Using this sexp, when writing fragments in order, a mapping can be created of the original location => target location, aka, source-maps!

These are generated by nodes, so will not have to create directly.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(code, sexp = nil) ⇒ Fragment

Create fragment with javascript code and optional original [Opal::Sexp].

Parameters:

  • code (String) —

    javascript code

  • sexp (Opal::Sexp) (defaults to: nil) —

    sexp used for creating fragment



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# File 'opal/lib/opal/fragment.rb', line 18

def initialize(code, sexp = nil)
  @code = code.to_s
  @sexp = sexp
end

Instance Attribute Details

#code ⇒ String (readonly)

String of javascript this fragment holds

Returns:

  • (String) 


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# File 'opal/lib/opal/fragment.rb', line 12

def code
  @code
end

Instance Method Details

#column ⇒ Integer?

Original column this fragment was created from

Returns:

  • (Integer, nil) 


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# File 'opal/lib/opal/fragment.rb', line 49

def column
  @sexp.column if @sexp
end

#inspect ⇒ Object

Inspect the contents of this fragment, f("fooo")



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# File 'opal/lib/opal/fragment.rb', line 37

def inspect
  "f(#{@code.inspect})"
end

#line ⇒ Integer?

Original line this fragment was created from

Returns:

  • (Integer, nil) 


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# File 'opal/lib/opal/fragment.rb', line 43

def line
  @sexp.line if @sexp
end

#to_code ⇒ Object

Deprecated.

In debug mode we may wish to include the original line and comment in a javascript comment.



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# File 'opal/lib/opal/fragment.rb', line 28

def to_code
  if @sexp
    "/*:#{@sexp.line}:#{@sexp.column}*/#{@code}"
  else
    @code
  end
end