Class: Johnson::SpiderMonkey::Runtime

Inherits:
Object
  • Object
show all
Defined in:
lib/johnson/spidermonkey/runtime.rb

Overview

native

Constant Summary collapse

CONTEXT_MAP_KEY = 
:johnson_context_map

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Runtime

Returns a new instance of Runtime.



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# File 'lib/johnson/spidermonkey/runtime.rb', line 6

def initialize(options={})
  @debugger = nil
  @compiled_scripts = {}
  @gcthings = {}
  @traps = []
  initialize_native(options)
  self["Ruby"] = Object
end

Class Method Details

.raise_js_exception(jsex) ⇒ Object

Raises:



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# File 'lib/johnson/spidermonkey/runtime.rb', line 72

def raise_js_exception(jsex)
  raise jsex if Exception === jsex
  raise Johnson::Error.new(jsex.to_s) unless Johnson::SpiderMonkey::RubyLandProxy === jsex

  stack = jsex.stack rescue nil

  message = jsex['message'] || jsex.to_s
  at = "(#{jsex['fileName']}):#{jsex['lineNumber']}"
  ex = Johnson::Error.new("#{message} at #{at}")
  if stack
    js_caller = stack.split("\n").find_all { |x| x != '@:0' }
    ex.set_backtrace(js_caller + caller)
  else
    ex.set_backtrace(caller)
  end

  raise ex
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/johnson/spidermonkey/runtime.rb', line 31

def [](key)
  global[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/johnson/spidermonkey/runtime.rb', line 35

def []=(key, value)
  global[key] = value
end

#add_gcthing(thing) ⇒ Object

called from js_land_proxy.c:make_js_land_proxy



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# File 'lib/johnson/spidermonkey/runtime.rb', line 16

def add_gcthing(thing)
  @gcthings[thing.object_id] = thing
end

#break(filename, linenum, &block) ⇒ Object

Yield to block in filename at linenum



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# File 'lib/johnson/spidermonkey/runtime.rb', line 63

def break(filename, linenum, &block)
  raise "#{filename} has not been compiled" unless @compiled_scripts.key?(filename)

  compiled_script = @compiled_scripts[filename]
  set_trap(compiled_script, linenum, block)
  @traps << [compiled_script, linenum]
end

#compile(script, filename = nil, linenum = nil) ⇒ Object

Compile script with filename and linenum



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# File 'lib/johnson/spidermonkey/runtime.rb', line 55

def compile(script, filename=nil, linenum=nil)
  filename ||= 'none'
  linenum  ||= 1
  @compiled_scripts[filename] = native_compile(script, filename, linenum)
end

#current_context ⇒ Object 



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# File 'lib/johnson/spidermonkey/runtime.rb', line 26

def current_context
  contexts = (Thread.current[CONTEXT_MAP_KEY] ||= {})
  contexts[self.object_id] ||= Context.new(self)
end

#evaluate(script, filename = nil, linenum = nil) ⇒ Object

Evaluate script with filename and linenum



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# File 'lib/johnson/spidermonkey/runtime.rb', line 41

def evaluate(script, filename = nil, linenum = nil)
  compiled_script = compile(script, filename, linenum)
  evaluate_compiled_script(compiled_script)
end

#evaluate_compiled(script) ⇒ Object 



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# File 'lib/johnson/spidermonkey/runtime.rb', line 46

def evaluate_compiled script
  evaluate_compiled_script(script)
  @traps.each do |trap_tuple|
    clear_trap(*trap_tuple)
  end
end

#remove_gcthing(object_id) ⇒ Object

called from js_land_proxy.c:finalize



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# File 'lib/johnson/spidermonkey/runtime.rb', line 21

def remove_gcthing(object_id)
  @gcthings.delete(object_id) if defined? @gcthings
end