class ExecJS::ExternalRuntime::Context
Public Class Methods
new(runtime, source = "")
click to toggle source
# File lib/execjs/external_runtime.rb, line 7 def initialize(runtime, source = "") source = encode(source) @runtime = runtime @source = source end
Public Instance Methods
call(identifier, *args)
click to toggle source
# File lib/execjs/external_runtime.rb, line 35 def call(identifier, *args) eval "#{identifier}.apply(this, #{::JSON.generate(args)})" end
eval(source, options = {})
click to toggle source
# File lib/execjs/external_runtime.rb, line 14 def eval(source, options = {}) source = encode(source) if /\S/ =~ source exec("return eval(#{::JSON.generate("(#{source})", quirks_mode: true)})") end end
exec(source, options = {})
click to toggle source
# File lib/execjs/external_runtime.rb, line 22 def exec(source, options = {}) source = encode(source) source = "#{@source}\n#{source}" if @source source = @runtime.compile_source(source) tmpfile = write_to_tempfile(source) begin extract_result(@runtime.exec_runtime(tmpfile.path)) ensure File.unlink(tmpfile) end end
Protected Instance Methods
create_tempfile(basename)
click to toggle source
See Tempfile.create on Ruby 2.1
# File lib/execjs/external_runtime.rb, line 41 def create_tempfile(basename) tmpfile = nil Dir::Tmpname.create(basename) do |tmpname| mode = File::WRONLY | File::CREAT | File::EXCL tmpfile = File.open(tmpname, mode, 0600) end tmpfile end
extract_result(output)
click to toggle source
# File lib/execjs/external_runtime.rb, line 57 def extract_result(output) status, value = output.empty? ? [] : ::JSON.parse(output, create_additions: false) if status == "ok" value elsif value =~ /SyntaxError:/ raise RuntimeError, value else raise ProgramError, value end end
write_to_tempfile(contents)
click to toggle source
# File lib/execjs/external_runtime.rb, line 50 def write_to_tempfile(contents) tmpfile = create_tempfile(['execjs', 'js']) tmpfile.write(contents) tmpfile.close tmpfile end