修复了因使用全局命名空间导致的源码中缺失引用的问题

Parsing/AlternativeElement.cs

@@ -1,4 +1,6 @@
-namespace Flee.Parsing
+using System.IO;
+
+namespace Flee.Parsing
 {
     /**
       * A regular expression alternative element. This element matches

Parsing/Analyzer.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 
 namespace Flee.Parsing
 {

Parsing/Automaton.cs

@@ -1,4 +1,6 @@
-namespace Flee.Parsing
+using System;
+
+namespace Flee.Parsing
 {
     internal class Automaton
     {

Parsing/CharacterSetElement.cs

@@ -1,4 +1,6 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.IO;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/CombineElement.cs

@@ -1,4 +1,6 @@
-namespace Flee.Parsing
+using System.IO;
+
+namespace Flee.Parsing
 {
     internal class CombineElement : Element
     {

Parsing/CustomExpressionAnalyzer.cs

@@ -1,4 +1,6 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.Globalization;
 using System.Text.RegularExpressions;

Parsing/Element.cs

@@ -1,4 +1,7 @@
-namespace Flee.Parsing
+using System;
+using System.IO;
+
+namespace Flee.Parsing
 {
     /**
      * A regular expression element. This is the common base class for

Parsing/ExpressionParser.cs

@@ -1,4 +1,6 @@
-using Flee.PublicTypes;
+using System;
+using System.IO;
+using Flee.PublicTypes;
 
 namespace Flee.Parsing
 {

Parsing/ExpressionTokenizer.cs

@@ -1,4 +1,6 @@
-using Flee.PublicTypes;
+using System;
+using System.IO;
+using Flee.PublicTypes;
 
 
 namespace Flee.Parsing

Parsing/LookAheadReader.cs

@@ -1,4 +1,8 @@
-namespace Flee.Parsing
+using System;
+using System.IO;
+using System.Linq;
+
+namespace Flee.Parsing
 {
     // * A look-ahead character stream reader. This class provides the 
     // * functionalities of a buffered line-number reader, but with the 

Parsing/Matcher.cs

@@ -1,4 +1,6 @@
-namespace Flee.Parsing
+using System.IO;
+
+namespace Flee.Parsing
 {
     /**
      * A regular expression string matcher. This class handles the

Parsing/Node.cs

@@ -1,4 +1,5 @@
 using System.Collections;
+using System.IO;
 
 namespace Flee.Parsing
 {

Parsing/ParseException.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/Parser.cs

@@ -1,4 +1,6 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.IO;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/ParserCreationException.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/ParserLogException.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/ProductionPatternAlternative.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Text;
 
 namespace Flee.Parsing

Parsing/ProductionPatternElement.cs

@@ -1,4 +1,5 @@
-using System.Text;
+using System;
+using System.Text;
 
 namespace Flee.Parsing
 {

Parsing/ReaderBuffer.cs

@@ -1,4 +1,7 @@
-namespace Flee.Parsing
+using System;
+using System.IO;
+
+namespace Flee.Parsing
 {
     /**
      * A character buffer that automatically reads from an input source

Parsing/RecursiveDescentParser.cs

@@ -1,4 +1,6 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.IO;
 
 namespace Flee.Parsing
 {

Parsing/RegExp.cs

@@ -1,5 +1,7 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Globalization;
+using System.IO;
 using System.Text;
 
 

Parsing/RegExpException.cs

@@ -1,4 +1,5 @@
-using System.Text;
+using System;
+using System.Text;
 
 
 namespace Flee.Parsing

Parsing/RepeatElement.cs

@@ -1,4 +1,6 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.IO;
 
 namespace Flee.Parsing
 {

Parsing/StackParser.cs

@@ -1,4 +1,7 @@
-using System.Collections;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
 
 namespace Flee.Parsing
 {

Parsing/StringElement.cs

@@ -1,4 +1,7 @@
-namespace Flee.Parsing
+using System;
+using System.IO;
+
+namespace Flee.Parsing
 {
     /**
      * A regular expression string element. This element only matches

Parsing/TokenNFA.cs

@@ -1,4 +1,6 @@
-namespace Flee.Parsing
+using System;
+
+namespace Flee.Parsing
 {
     /**
     * A non-deterministic finite state automaton (NFA) for matching

Parsing/TokenRegExpParser.cs

@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Globalization;
 using System.Text;
 

Parsing/TokenStringDFA.cs

@@ -1,4 +1,5 @@
-using System.Text;
+using System;
+using System.Text;
 
 namespace Flee.Parsing
 {

Parsing/Tokenizer.cs

@@ -1,4 +1,6 @@
-using System.Text;
+using System;
+using System.IO;
+using System.Text;
 using System.Text.RegularExpressions;
 
 namespace Flee.Parsing