[macruby-changes] [4603] DietRB/trunk

[source_changes at macosforge.org]

Revision: 4603
          http://trac.macosforge.org/projects/ruby/changeset/4603
Author:   eloy.de.enige at gmail.com
Date:     2010-10-08 03:47:12 -0700 (Fri, 08 Oct 2010)
Log Message:
-----------
Use Readline, with prompt and history, to get input and buffer the source.

From: Eloy Duran <eloy.de.enige at gmail.com>

Modified Paths:
--------------
    DietRB/trunk/lib/irb/context.rb
    DietRB/trunk/spec/context_spec.rb

Modified: DietRB/trunk/lib/irb/context.rb
===================================================================
--- DietRB/trunk/lib/irb/context.rb	2010-10-08 10:47:03 UTC (rev 4602)
+++ DietRB/trunk/lib/irb/context.rb	2010-10-08 10:47:12 UTC (rev 4603)
@@ -1,7 +1,7 @@
+require 'readline'
+
 module IRB
   class Context
-    PROMPT = "irb(%s):%03d:%d> "
-    
     attr_reader :object, :binding, :line, :source
     
     def initialize(object)
@@ -15,6 +15,18 @@
       eval(source.to_s, @binding)
     end
     
+    def readline
+      Readline.readline(prompt, true)
+    end
+    
+    def run
+      while line = readline
+        @source << line
+      end
+    end
+    
+    PROMPT = "irb(%s):%03d:%d> "
+    
     def prompt
       PROMPT % [@object.inspect, @line, @source.level]
     end

Modified: DietRB/trunk/spec/context_spec.rb
===================================================================
--- DietRB/trunk/spec/context_spec.rb	2010-10-08 10:47:03 UTC (rev 4602)
+++ DietRB/trunk/spec/context_spec.rb	2010-10-08 10:47:12 UTC (rev 4603)
@@ -1,4 +1,5 @@
 require File.expand_path('../spec_helper', __FILE__)
+require 'tempfile'
 
 main = self
 
@@ -48,4 +49,35 @@
     o = Object.new
     IRB::Context.new(o).prompt.should == "irb(#{o.inspect}):001:0> "
   end
+end
+
+class << Readline
+  attr_reader :received
+  
+  def stub_input(*input)
+    @input = input
+  end
+  
+  def readline(prompt, history)
+    @received = [prompt, history]
+    @input.shift
+  end
+end
+
+describe "IRB::Context, running in a simple readline loop" do
+  before do
+    @context = IRB::Context.new(main)
+  end
+  
+  it "prints the prompt, reads a line, saves it to the history and returns it" do
+    Readline.stub_input("def foo")
+    @context.readline.should == "def foo"
+    Readline.received.should == ["irb(main):001:0> ", true]
+  end
+  
+  it "adds the received code, as long as available, to the source buffer while running" do
+    Readline.stub_input("def foo", "p :ok")
+    @context.run
+    @context.source.to_s.should == "def foo\np :ok"
+  end
 end
\ No newline at end of file
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