Class: Opal::Fragment
- Inherits:
-
Object
- Object
- Opal::Fragment
- 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
-
#code ⇒ String
readonly
String of javascript this fragment holds.
Instance Method Summary collapse
-
#column ⇒ Integer?
Original column this fragment was created from.
-
#initialize(code, scope, sexp = nil) ⇒ Fragment
constructor
Create fragment with javascript code and optional original [Opal::Sexp].
-
#inspect ⇒ Object
Inspect the contents of this fragment, f("fooo").
-
#line ⇒ Integer?
Original line this fragment was created from.
- #location ⇒ Object
- #skip_source_map? ⇒ Boolean
- #source_map_name ⇒ Object
- #source_map_name_for(sexp) ⇒ Object
Constructor Details
#initialize(code, scope, sexp = nil) ⇒ Fragment
Create fragment with javascript code and optional original [Opal::Sexp].
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# File 'opal/lib/opal/fragment.rb', line 20 def initialize(code, scope, sexp = nil) @code = code.to_s @sexp = sexp @scope = scope end |
Instance Attribute Details
#code ⇒ String (readonly)
String of javascript this fragment holds
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# File 'opal/lib/opal/fragment.rb', line 14 def code @code end |
Instance Method Details
#column ⇒ Integer?
Original column this fragment was created from
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# File 'opal/lib/opal/fragment.rb', line 127 def column location&.column end |
#inspect ⇒ Object
Inspect the contents of this fragment, f("fooo")
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# File 'opal/lib/opal/fragment.rb', line 27 def inspect "f(#{@code.inspect})" end |
#line ⇒ Integer?
Original line this fragment was created from
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# File 'opal/lib/opal/fragment.rb', line 121 def line location&.line end |
#location ⇒ Object
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# File 'opal/lib/opal/fragment.rb', line 95 def location case when !@sexp nil when @sexp.type == :send loc = @sexp.loc if loc.respond_to? :dot # a>.b || a>+b / >a / a>[b] loc.dot || loc.selector elsif loc.respond_to? :operator # a >|= b loc.operator else @sexp end when @sexp.type == :iter if loc.respond_to? :begin @sexp.loc.begin # [1,2].each >{ } else @sexp end else @sexp end end |
#skip_source_map? ⇒ Boolean
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# File 'opal/lib/opal/fragment.rb', line 131 def skip_source_map? @sexp == false end |
#source_map_name ⇒ Object
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# File 'opal/lib/opal/fragment.rb', line 89 def source_map_name return nil unless @sexp source_map_name_for(@sexp) end |
#source_map_name_for(sexp) ⇒ Object
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# File 'opal/lib/opal/fragment.rb', line 31 def source_map_name_for(sexp) case sexp.type when :top case sexp.[:kind] when :require '<top (required)>' when :eval '(eval)' when :main '<main>' end when :begin, :newline, :js_return source_map_name_for(@scope.sexp) if @scope when :iter scope = @scope iters = 1 while scope if scope.class == Nodes::IterNode iters += 1 scope = scope.parent else break end end level = " (#{iters} levels)" if iters > 1 "block#{level} in #{source_map_name_for(scope.sexp)}" when :self 'self' when :module const, = *sexp "<module:#{source_map_name_for(const)}>" when :class const, = *sexp "<class:#{source_map_name_for(const)}>" when :const scope, name = *sexp if !scope || scope.type == :cbase name.to_s else "#{source_map_name_for(scope)}::#{name}" end when :int sexp.children.first when :def sexp.children.first when :defs sexp.children[1] when :send sexp.children[1] when :lvar, :lvasgn, :lvdeclare, :ivar, :ivasgn, :gvar, :cvar, :cvasgn, :gvars, :gvasgn, :arg sexp.children.first when :str, :xstr # Inside xstr - JS calls source_map_name_for(@scope.sexp) else # nil end end |