Specs for the captures, first commit

Gemfile.lock

@@ -1,22 +1,34 @@
 PATH
   remote: .
   specs:
-    parslet (1.4.1)
+    parslet (1.5)
       blankslate (~> 2.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
     blankslate (2.1.2.4)
+    coderay (1.0.8)
     diff-lcs (1.1.3)
     flexmock (0.9.0)
     growl (1.0.3)
-    guard (0.8.8)
-      thor (~> 0.14.6)
+    guard (1.6.1)
+      listen (>= 0.6.0)
+      lumberjack (>= 1.0.2)
+      pry (>= 0.9.10)
+      thor (>= 0.14.6)
     guard-rspec (0.5.9)
       guard (>= 0.8.4)
     json (1.6.3)
+    listen (0.6.0)
+    lumberjack (1.0.2)
+    method_source (0.8.1)
+    pry (0.9.10)
+      coderay (~> 1.0.5)
+      method_source (~> 0.8)
+      slop (~> 3.3.1)
     rake (0.9.2.2)
+    rb-fsevent (0.9.2)
     rdoc (3.11)
       json (~> 1.4)
     rspec (2.8.0)
@@ -30,7 +42,8 @@ GEM
     sdoc (0.3.16)
       json (>= 1.1.3)
       rdoc (~> 3.10)
-    thor (0.14.6)
+    slop (3.3.3)
+    thor (0.16.0)
 
 PLATFORMS
   ruby
@@ -42,6 +55,7 @@ DEPENDENCIES
   guard-rspec
   parslet!
   rake
+  rb-fsevent
   rdoc
   rspec
   sdoc

HISTORY.txt

@@ -3,8 +3,8 @@
   - prsnt? and absnt? are now finally banned into oblivion. Wasting vocals for
     the win. 
 
-= 1.4.1 / ???
-
+= 1.5 / ??
+    
   + Handles unconsumed input at end of parse completely differently. Instead
     of generating a toplevel error, it now raises an error in every branch
     of the parse. More information in the resulting exception ensues! Thanks
@@ -16,6 +16,9 @@
   * This history now finally reads like the Changelog of the linux kernel. 
     Meaning that probably no one ever reads this. 
 
+  + Captures and parsing subsequent input based on captured values. This has
+    been long overdue - finally you can parse HEREdocs with parslet!
+
 = 1.4.0 / 25May2012
 
   + Revised documentation. A few new API features have finally made it into

example/output/capture.out

@@ -0,0 +1,3 @@
+[{:line=>"Text1\n"@9},
+ {:doc=>[{:line=>"Text3\n"@23}, {:line=>"Text4\n"@29}]},
+ {:line=>"\nText2\n"@41}]

lib/parslet/scope.rb

@@ -1,4 +1,9 @@
 class Parslet::Scope
+  # Raised when the accessed slot has never been assigned a value. 
+  #
+  class NotFound < StandardError
+  end
+
   class Binding
     attr_reader :parent
 
@@ -8,7 +13,9 @@ def initialize(parent=nil)
     end
 
     def [](k)
-      @hash.fetch(k)
+      @hash.has_key?(k) && @hash[k] ||
+        parent && parent[k] or 
+        raise NotFound
     end
     def []=(k,v)
       @hash.store(k,v)

parslet.gemspec

@@ -2,22 +2,20 @@
 
 Gem::Specification.new do |s|
   s.name = 'parslet'
-  s.version = '1.4.1'
+  s.version = '1.5.0'
 
-  s.required_rubygems_version = Gem::Requirement.new('>= 0') if s.respond_to? :required_rubygems_version=
   s.authors = ['Kaspar Schiess']
-  s.date = Date.today
   s.email = 'kaspar.schiess@absurd.li'
   s.extra_rdoc_files = ['README']
   s.files = %w(HISTORY.txt LICENSE Rakefile README) + Dir.glob("{lib,example}/**/*")
   s.homepage = 'http://kschiess.github.com/parslet'
   s.rdoc_options = ['--main', 'README']
   s.require_paths = ['lib']
-  s.rubygems_version = '1.8.6'
   s.summary = 'Parser construction library with great error reporting in Ruby.'  
 
   s.add_dependency 'blankslate', '~> 2.0'
 
-  %w(rspec flexmock rdoc sdoc guard guard-rspec growl).each { |gem_name| 
-    s.add_development_dependency gem_name }
+  %w(rspec flexmock rdoc sdoc guard guard-rspec rb-fsevent growl).
+    each { |gem_name| 
+      s.add_development_dependency gem_name }
 end

spec/parslet/scope_spec.rb

@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+describe Parslet::Scope do
+  let(:scope) { described_class.new }
+
+  describe 'simple store/retrieve' do
+    before(:each) { scope[:foo] = :bar }
+    it "allows storing objects" do
+      scope[:obj] = 42
+    end 
+    it "raises on access of empty slots" do
+      expect {
+        scope[:empty]
+      }.to raise_error(Parslet::Scope::NotFound)
+    end 
+    it "allows retrieval of stored values" do
+      scope[:foo].should == :bar
+    end 
+  end
+
+  describe 'scoping' do
+    before(:each) { scope[:depth] = 1 }
+    before(:each) { scope.push }
+
+    let(:depth) { scope[:depth] }
+    subject { depth }
+
+    it { should == 1 }
+    describe 'after a push' do
+      before(:each) { scope.push }
+      it { should == 1 }
+
+      describe 'and reassign' do
+        before(:each) { scope[:depth] = 2 }
+
+        it { should == 2 }
+
+        describe 'and a pop' do
+          before(:each) { scope.pop }
+          it { should == 1 }
+        end
+      end
+    end
+  end
+end