Class: Red::ControlNode::RescueBody

Inherits:
Red::ControlNode show all
Defined in:
lib/red/nodes/control_nodes.rb

Overview

:nodoc:

Instance Method Summary collapse

Methods inherited from String

#%, #*, #+, #<<, #<=>, #==, #=~, #[], #[]=, #capitalize, #capitalize!, #casecmp, #center, #chomp, #chomp!, #chop, #chop!, #concat, #count, #crypt, #delete, #delete!, #downcase, #downcase!, #each, #each_byte, #each_line, #empty?, #eql?, #gsub, #gsub!, #hash, #hex, #include?, #index, #insert, #inspect, #intern, #length, #ljust, #lstrip, #lstrip!, #match, #next, #next!, #oct, #replace, #reverse, #reverse!, #rindex, #rjust, #rstrip, #rstrip!, #scan, #size, #slice, #slice!, #split, #squeeze, #strip, #strip!, #strip_scripts, #sub, #sub!, #succ, #succ!, #sum, #swapcase, #swapcase!, #to_f, #to_i, #to_s, #to_str, #to_sym, #tr, #tr!, #tr_s, #tr_s!, #upcase, #upcase!, #upto

Constructor Details

#initialize(exception_types_array_sexp, block_sexp, rescue_body_sexp = nil, options = {}) ⇒ RescueBody

:resbody, | [:array, {expression, expression, …]}, (expression | :block), (:resbody)


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# File 'lib/red/nodes/control_nodes.rb', line 43

def initialize(exception_types_array_sexp, block_sexp, rescue_body_sexp = nil, options = {})
  (options = block_sexp) && (block_sexp = nil) if block_sexp.is_a?(Hash)
  (options = rescue_body_sexp) && (block_sexp.first==:resbody ? (rescue_body_sexp = block_sexp && block_sexp = nil) : (rescue_body_sexp = nil)) if rescue_body_sexp.is_a?(Hash)
  
  if block_sexp.is_sexp?(:block) && block_sexp[1].is_sexp?(:lasgn) && block_sexp[1].last == [:gvar, %s($!)]
    exception_variable  = "var %s=_e;" % block_sexp.delete(block_sexp.assoc(:lasgn))[1].red!
  elsif block_sexp.is_sexp?(:lasgn) && block_sexp.last == [:gvar, %s($!)]
    exception_variable  = "var %s=_e;" % block_sexp[1].red!
    block_sexp          = [:nil]
  end
  
  exception_types_array = (exception_types_array_sexp || [:array, [:const, :Exception]]).red!
  block                 = (block_sexp.is_sexp?(:block) ? block_sexp : [:block, block_sexp]).red!(:force_return => options[:force_return])
  rescue_body           = "else{%s;}" % rescue_body_sexp.red!(:force_return => options[:force_return]) if rescue_body_sexp
  
  self << "%sif($e(_e,%s)){_eRescued=true;%s;}%s" % [exception_variable, exception_types_array, block, rescue_body]
end