From 1c279a7d2753949c725754e1302f791b76358114 Mon Sep 17 00:00:00 2001
From: drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 27 Nov 2012 04:28:14 +0000
Subject: * lib/rdoc*:  Updated to RDoc 4.0 (pre-release) * bin/rdoc:  ditto *
 test/rdoc:  ditto * NEWS:  Updated with RDoc 4.0 information

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rdoc/markdown/literals_1_9.rb | 417 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 417 insertions(+)
 create mode 100644 lib/rdoc/markdown/literals_1_9.rb

(limited to 'lib/rdoc/markdown/literals_1_9.rb')

diff --git a/lib/rdoc/markdown/literals_1_9.rb b/lib/rdoc/markdown/literals_1_9.rb
new file mode 100644
index 0000000000..01d00e41f6
--- /dev/null
+++ b/lib/rdoc/markdown/literals_1_9.rb
@@ -0,0 +1,417 @@
+# coding: UTF-8
+# :markup: markdown
+
+##
+#--
+# This set of literals is for ruby 1.9 regular expressions and gives full
+# unicode support.
+#
+# Unlike peg-markdown, this set of literals recognizes Unicode alphanumeric
+# characters, newlines and spaces.
+class RDoc::Markdown::Literals
+  # :stopdoc:
+
+    # This is distinct from setup_parser so that a standalone parser
+    # can redefine #initialize and still have access to the proper
+    # parser setup code.
+    def initialize(str, debug=false)
+      setup_parser(str, debug)
+    end
+
+
+
+    # Prepares for parsing +str+.  If you define a custom initialize you must
+    # call this method before #parse
+    def setup_parser(str, debug=false)
+      @string = str
+      @pos = 0
+      @memoizations = Hash.new { |h,k| h[k] = {} }
+      @result = nil
+      @failed_rule = nil
+      @failing_rule_offset = -1
+
+      setup_foreign_grammar
+    end
+
+    attr_reader :string
+    attr_reader :failing_rule_offset
+    attr_accessor :result, :pos
+
+    
+    def current_column(target=pos)
+      if c = string.rindex("\n", target-1)
+        return target - c - 1
+      end
+
+      target + 1
+    end
+
+    def current_line(target=pos)
+      cur_offset = 0
+      cur_line = 0
+
+      string.each_line do |line|
+        cur_line += 1
+        cur_offset += line.size
+        return cur_line if cur_offset >= target
+      end
+
+      -1
+    end
+
+    def lines
+      lines = []
+      string.each_line { |l| lines << l }
+      lines
+    end
+
+
+
+    def get_text(start)
+      @string[start..@pos-1]
+    end
+
+    def show_pos
+      width = 10
+      if @pos < width
+        "#{@pos} (\"#{@string[0,@pos]}\" @ \"#{@string[@pos,width]}\")"
+      else
+        "#{@pos} (\"... #{@string[@pos - width, width]}\" @ \"#{@string[@pos,width]}\")"
+      end
+    end
+
+    def failure_info
+      l = current_line @failing_rule_offset
+      c = current_column @failing_rule_offset
+
+      if @failed_rule.kind_of? Symbol
+        info = self.class::Rules[@failed_rule]
+        "line #{l}, column #{c}: failed rule '#{info.name}' = '#{info.rendered}'"
+      else
+        "line #{l}, column #{c}: failed rule '#{@failed_rule}'"
+      end
+    end
+
+    def failure_caret
+      l = current_line @failing_rule_offset
+      c = current_column @failing_rule_offset
+
+      line = lines[l-1]
+      "#{line}\n#{' ' * (c - 1)}^"
+    end
+
+    def failure_character
+      l = current_line @failing_rule_offset
+      c = current_column @failing_rule_offset
+      lines[l-1][c-1, 1]
+    end
+
+    def failure_oneline
+      l = current_line @failing_rule_offset
+      c = current_column @failing_rule_offset
+
+      char = lines[l-1][c-1, 1]
+
+      if @failed_rule.kind_of? Symbol
+        info = self.class::Rules[@failed_rule]
+        "@#{l}:#{c} failed rule '#{info.name}', got '#{char}'"
+      else
+        "@#{l}:#{c} failed rule '#{@failed_rule}', got '#{char}'"
+      end
+    end
+
+    class ParseError < RuntimeError
+    end
+
+    def raise_error
+      raise ParseError, failure_oneline
+    end
+
+    def show_error(io=STDOUT)
+      error_pos = @failing_rule_offset
+      line_no = current_line(error_pos)
+      col_no = current_column(error_pos)
+
+      io.puts "On line #{line_no}, column #{col_no}:"
+
+      if @failed_rule.kind_of? Symbol
+        info = self.class::Rules[@failed_rule]
+        io.puts "Failed to match '#{info.rendered}' (rule '#{info.name}')"
+      else
+        io.puts "Failed to match rule '#{@failed_rule}'"
+      end
+
+      io.puts "Got: #{string[error_pos,1].inspect}"
+      line = lines[line_no-1]
+      io.puts "=> #{line}"
+      io.print(" " * (col_no + 3))
+      io.puts "^"
+    end
+
+    def set_failed_rule(name)
+      if @pos > @failing_rule_offset
+        @failed_rule = name
+        @failing_rule_offset = @pos
+      end
+    end
+
+    attr_reader :failed_rule
+
+    def match_string(str)
+      len = str.size
+      if @string[pos,len] == str
+        @pos += len
+        return str
+      end
+
+      return nil
+    end
+
+    def scan(reg)
+      if m = reg.match(@string[@pos..-1])
+        width = m.end(0)
+        @pos += width
+        return true
+      end
+
+      return nil
+    end
+
+    if "".respond_to? :getbyte
+      def get_byte
+        if @pos >= @string.size
+          return nil
+        end
+
+        s = @string.getbyte @pos
+        @pos += 1
+        s
+      end
+    else
+      def get_byte
+        if @pos >= @string.size
+          return nil
+        end
+
+        s = @string[@pos]
+        @pos += 1
+        s
+      end
+    end
+
+    def parse(rule=nil)
+      # We invoke the rules indirectly via apply
+      # instead of by just calling them as methods because
+      # if the rules use left recursion, apply needs to
+      # manage that.
+
+      if !rule
+        apply(:_root)
+      else
+        method = rule.gsub("-","_hyphen_")
+        apply :"_#{method}"
+      end
+    end
+
+    class MemoEntry
+      def initialize(ans, pos)
+        @ans = ans
+        @pos = pos
+        @result = nil
+        @set = false
+        @left_rec = false
+      end
+
+      attr_reader :ans, :pos, :result, :set
+      attr_accessor :left_rec
+
+      def move!(ans, pos, result)
+        @ans = ans
+        @pos = pos
+        @result = result
+        @set = true
+        @left_rec = false
+      end
+    end
+
+    def external_invoke(other, rule, *args)
+      old_pos = @pos
+      old_string = @string
+
+      @pos = other.pos
+      @string = other.string
+
+      begin
+        if val = __send__(rule, *args)
+          other.pos = @pos
+          other.result = @result
+        else
+          other.set_failed_rule "#{self.class}##{rule}"
+        end
+        val
+      ensure
+        @pos = old_pos
+        @string = old_string
+      end
+    end
+
+    def apply_with_args(rule, *args)
+      memo_key = [rule, args]
+      if m = @memoizations[memo_key][@pos]
+        @pos = m.pos
+        if !m.set
+          m.left_rec = true
+          return nil
+        end
+
+        @result = m.result
+
+        return m.ans
+      else
+        m = MemoEntry.new(nil, @pos)
+        @memoizations[memo_key][@pos] = m
+        start_pos = @pos
+
+        ans = __send__ rule, *args
+
+        lr = m.left_rec
+
+        m.move! ans, @pos, @result
+
+        # Don't bother trying to grow the left recursion
+        # if it's failing straight away (thus there is no seed)
+        if ans and lr
+          return grow_lr(rule, args, start_pos, m)
+        else
+          return ans
+        end
+
+        return ans
+      end
+    end
+
+    def apply(rule)
+      if m = @memoizations[rule][@pos]
+        @pos = m.pos
+        if !m.set
+          m.left_rec = true
+          return nil
+        end
+
+        @result = m.result
+
+        return m.ans
+      else
+        m = MemoEntry.new(nil, @pos)
+        @memoizations[rule][@pos] = m
+        start_pos = @pos
+
+        ans = __send__ rule
+
+        lr = m.left_rec
+
+        m.move! ans, @pos, @result
+
+        # Don't bother trying to grow the left recursion
+        # if it's failing straight away (thus there is no seed)
+        if ans and lr
+          return grow_lr(rule, nil, start_pos, m)
+        else
+          return ans
+        end
+
+        return ans
+      end
+    end
+
+    def grow_lr(rule, args, start_pos, m)
+      while true
+        @pos = start_pos
+        @result = m.result
+
+        if args
+          ans = __send__ rule, *args
+        else
+          ans = __send__ rule
+        end
+        return nil unless ans
+
+        break if @pos <= m.pos
+
+        m.move! ans, @pos, @result
+      end
+
+      @result = m.result
+      @pos = m.pos
+      return m.ans
+    end
+
+    class RuleInfo
+      def initialize(name, rendered)
+        @name = name
+        @rendered = rendered
+      end
+
+      attr_reader :name, :rendered
+    end
+
+    def self.rule_info(name, rendered)
+      RuleInfo.new(name, rendered)
+    end
+
+
+  # :startdoc:
+  # :stopdoc:
+  def setup_foreign_grammar; end
+
+  # Alphanumeric = /\p{Word}/
+  def _Alphanumeric
+    _tmp = scan(/\A(?-mix:\p{Word})/)
+    set_failed_rule :_Alphanumeric unless _tmp
+    return _tmp
+  end
+
+  # AlphanumericAscii = /[A-Za-z0-9]/
+  def _AlphanumericAscii
+    _tmp = scan(/\A(?-mix:[A-Za-z0-9])/)
+    set_failed_rule :_AlphanumericAscii unless _tmp
+    return _tmp
+  end
+
+  # BOM = "uFEFF"
+  def _BOM
+    _tmp = match_string("uFEFF")
+    set_failed_rule :_BOM unless _tmp
+    return _tmp
+  end
+
+  # Newline = /\n|\r\n?|\p{Zl}|\p{Zp}/
+  def _Newline
+    _tmp = scan(/\A(?-mix:\n|\r\n?|\p{Zl}|\p{Zp})/)
+    set_failed_rule :_Newline unless _tmp
+    return _tmp
+  end
+
+  # NonAlphanumeric = /\p{^Word}/
+  def _NonAlphanumeric
+    _tmp = scan(/\A(?-mix:\p{^Word})/)
+    set_failed_rule :_NonAlphanumeric unless _tmp
+    return _tmp
+  end
+
+  # Spacechar = /\t|\p{Zs}/
+  def _Spacechar
+    _tmp = scan(/\A(?-mix:\t|\p{Zs})/)
+    set_failed_rule :_Spacechar unless _tmp
+    return _tmp
+  end
+
+  Rules = {}
+  Rules[:_Alphanumeric] = rule_info("Alphanumeric", "/\\p{Word}/")
+  Rules[:_AlphanumericAscii] = rule_info("AlphanumericAscii", "/[A-Za-z0-9]/")
+  Rules[:_BOM] = rule_info("BOM", "\"uFEFF\"")
+  Rules[:_Newline] = rule_info("Newline", "/\\n|\\r\\n?|\\p{Zl}|\\p{Zp}/")
+  Rules[:_NonAlphanumeric] = rule_info("NonAlphanumeric", "/\\p{^Word}/")
+  Rules[:_Spacechar] = rule_info("Spacechar", "/\\t|\\p{Zs}/")
+  # :startdoc:
+end
-- 
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