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Versions: 13
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Contents
require 'java'
module Redcar
class Groovy
class ReplMirror < Redcar::REPL::ReplMirror
def title
"Groovy REPL"
end
def grammar_name
"Groovy REPL"
end
def prompt
"groovy>"
end
def evaluator
@instance ||= ReplMirror::Evaluator.new
end
def format_error(e)
backtrace = e.backtrace
"ERROR #{e.class}:\n #{e.message}\n #{backtrace.join("\n ")}"
end
def help
h = super
h << """
Note on Groovy Script Scoping:
Classes, undefined variables, and undefined closures are saved in the script
binding between statements.
Defined methods, closures, and variables are not added to the binding,
because they are considered local variables and thus are not available after
the defining statement.
Example:
def foo = 'hello! I am a local variable'
foo = 'hi! I am a binding variable'
See 'http://groovy.codehaus.org/Scoping+and+the+Semantics+of+%22def%22'
for more information.
"""
end
class Evaluator
def self.load_dependencies
unless @loaded
Groovy.load_dependencies
import 'groovy.lang.GroovyShell'
import 'java.io.PrintWriter'
import 'java.io.StringWriter'
@loaded = true
end
end
def initialize
Evaluator.load_dependencies
@out = StringWriter.new
@shell = GroovyShell.new
@shell.setProperty('out',@out)
end
def inspect
"groovyREPL main"
end
def execute(cmd)
output = @shell.evaluate(cmd,"GroovyREPL").to_s
output = "null" unless output and not output.empty?
if @out and not @out.toString().empty?
console = @out.toString() + "\n"
else
console = ""
end
buf = @out.getBuffer()
buf.delete(0,buf.length()) if buf.length() > 0
console + "===> #{output}"
end
end
end
end
end
Version data entries
13 entries across 13 versions & 3 rubygems