From f8ab487e4d60a14dd7f807ab146168d9d034a6ea Mon Sep 17 00:00:00 2001
From: knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 30 Apr 2001 17:38:21 +0000
Subject: Initial revision

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1337 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/irb/workspace.rb | 106 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 lib/irb/workspace.rb

(limited to 'lib/irb/workspace.rb')

diff --git a/lib/irb/workspace.rb b/lib/irb/workspace.rb
new file mode 100644
index 0000000000..3550a758d0
--- /dev/null
+++ b/lib/irb/workspace.rb
@@ -0,0 +1,106 @@
+#
+#   irb/workspace-binding.rb - 
+#   	$Release Version: 0.7.3$
+#   	$Revision$
+#   	$Date$
+#   	by Keiju ISHITSUKA(keiju@ishitsuka.com)
+#
+# --
+#
+#   
+#
+module IRB
+  class WorkSpace
+    # create new workspace. 
+    # (JP: 新たなworkspaceを作る. mainをselfとする. 省略したら, 
+    #      TOPLEVEL_BINDINGのmainをそのまま使う. )
+    def initialize(*main)
+      if IRB.conf[:SINGLE_IRB]
+	@binding = TOPLEVEL_BINDING
+      else
+	case IRB.conf[:CONTEXT_MODE]
+	when 0	# binding in proc on TOPLEVEL_BINDING
+	  @binding = eval("proc{binding}.call",
+		      TOPLEVEL_BINDING, 
+		      __FILE__,
+		      __LINE__)
+	when 1	# binding in loaded file
+	  require "tempfile"
+	  f = Tempfile.open("irb-binding")
+	  f.print <<EOF
+	  $binding = binding
+EOF
+	  f.close
+	  load f.path
+	  @binding = $binding
+
+	when 2	# binding in loaded file(thread use)
+	  unless defined? BINDING_QUEUE
+	    require "thread"
+	    
+	    IRB.const_set("BINDING_QUEUE", SizedQueue.new(1))
+	    Thread.abort_on_exception = true
+	    Thread.start do
+	      eval "require \"irb/ws-for-case-2\"", TOPLEVEL_BINDING, __FILE__, __LINE__
+	    end
+	    Thread.pass
+	  end
+	  @binding = BINDING_QUEUE.pop
+
+	when 3	# binging in function on TOPLEVEL_BINDING(default)
+	  @binding = eval("def irb_binding; binding; end; irb_binding",
+		      TOPLEVEL_BINDING, 
+		      __FILE__,
+		      __LINE__ - 3)
+	end
+      end
+      if main.empty?
+	@main = eval "self", @binding
+      else
+	@main = main[0]
+	IRB.conf[:__MAIN__] = @main
+	case @main
+	when Module
+	  @binding = eval("IRB.conf[:__MAIN__].module_eval('binding', __FILE__, __LINE__)", @binding, __FILE__, __LINE__)
+	else
+	  begin 
+	    @binding = eval("IRB.conf[:__MAIN__].instance_eval('binding', __FILE__, __LINE__)", @binding, __FILE__, __LINE__)
+	  rescue TypeError
+	    IRB.fail CanNotChangeBinding, @main.inspect
+	  end
+	end
+      end
+      eval("_=nil", @binding)
+    end
+
+    attr_reader :binding
+    attr_reader :main
+
+    def evaluate(statements, file = __FILE__, line = __LINE__)
+      eval statements, @binding, file, line
+    end
+
+    # error message manupilator
+    def filter_backtrace(bt)
+      case IRB.conf[:CONTEXT_MODE]
+      when 0
+	return nil if bt =~ /\(irb_local_binding\)/
+      when 1
+	if(bt =~ %r!/tmp/irb-binding! or
+	   bt =~ %r!irb/.*\.rb! or
+	   bt =~ /irb\.rb/)
+	  return nil
+	end
+      when 2
+	return nil if bt =~ /irb\/.*\.rb/
+      when 3
+	return nil if bt =~ /irb\/.*\.rb/
+	bt.sub!(/:\s*in `irb_binding'/){""} 
+      end
+      bt
+    end
+
+    def IRB.delete_caller
+    end
+  end
+end
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