implab/ImplabNet Files · Implab.ServiceHost/Unity/TypeReferenceParser.cs

Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...

Implab: added XmlDefaultSeializer (SerializersPool is now obsolete) Implab.ServiceHost: rewritten TypeReference (added support for nested types), stable API

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             TypeReferenceParser.cs
        
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             / Implab.ServiceHost / Unity / TypeReferenceParser.cs
          
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        cin
    
Working on Unity xml configuration

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      using System;

      using System.Collections.Generic;

        cin
    
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      using System.Linq;

        cin
    
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      using System.Text.RegularExpressions;

      namespace Implab.ServiceHost.Unity {

        cin
    
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          internal class TypeReferenceParser {

        cin
    
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              enum TokenType {

                  None,

                  Word,

                  Dot,

                  Comma,

                  OpenList,

                  CloseList,

        cin
    
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                  OpenArray,

                  CloseArray,

        cin
    
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                  Plus,

        cin
    
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                  Eof

              }

        cin
    
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              readonly Regex _tokens = new Regex(@"\G(?:([\w]+)|\s*([\+\.{},\[\]])\s*)", RegexOptions.Compiled);

        cin
    
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              TokenType m_token;

              string m_tokenValue;

              int m_pos;

        cin
    
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              int m_tokenPos;

        cin
    
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              readonly string m_text;

              TokenType Token { get { return m_token; } }

              string TokenValue { get { return m_tokenValue; } }

        cin
    
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              int TokenPos { get { return m_tokenPos; } }

        cin
    
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              public TypeReferenceParser(string text) {

                  Safe.ArgumentNotEmpty(text, nameof(text));

                  m_text = text;

              }

              bool ReadToken() {

                  if (m_pos >= m_text.Length) {

                      m_token = TokenType.Eof;

                      m_tokenValue = null;

                      return false;

                  }

                  var m = _tokens.Match(m_text, m_pos);

                  if (m.Success) {

        cin
    
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                      m_tokenPos = m_pos;

        cin
    
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                      m_pos += m.Length;

                      if (m.Groups[1].Success) {

                          m_token = TokenType.Word;

                          m_tokenValue = m.Groups[1].Value;

                      } else if (m.Groups[2].Success) {

                          m_tokenValue = null;

                          switch (m.Groups[2].Value) {

                              case "{":

                                  m_token = TokenType.OpenList;

                                  break;

                              case "}":

                                  m_token = TokenType.CloseList;

                                  break;

                              case ".":

                                  m_token = TokenType.Dot;

                                  break;

                              case ",":

                                  m_token = TokenType.Comma;

                                  break;

        cin
    
Refactoring...

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                              case "[":

                                  m_token = TokenType.OpenArray;

                                  break;

                              case "]":

                                  m_token = TokenType.CloseArray;

                                  break;

        cin
    
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                              case "+":

                                  m_token = TokenType.Plus;

                                  break;

        cin
    
Working on Unity xml configuration

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                          }

                      }

                      return true;

                  }

                  throw new FormatException($"Failed to parse '{m_text}' at pos {m_pos}");

              }

        cin
    
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              public TypeReference Parse() {

                  var result = ReadTypeReference();

        cin
    
Refactoring...

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                  if (Token != TokenType.Eof)

        cin
    
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                      ThrowUnexpectedToken();

                  return result;

        cin
    
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              }

        cin
    
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              string[] ReadQTypeName() {

        cin
    
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                  var parts = new List<string>();

                  string current = null;

                  bool stop = false;

                  while ((!stop) && ReadToken()) {

                      switch (Token) {

                          case TokenType.Word:

                              if (current != null)

                                  ThrowUnexpectedToken();

                              current = TokenValue;

                              break;

                          case TokenType.Dot:

                              if (current == null)

                                  ThrowUnexpectedToken();

                              parts.Add(current);

                              current = null;

                              break;

                          default:

                              stop = true;

                              break;

                      }

                  }

                  if (current != null)

                      parts.Add(current);

                  if (parts.Count == 0)

                      return null;

                  return parts.ToArray();

              }

        cin
    
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              string ReadNQTypeName() {

                  ReadToken();

                  if (Token != TokenType.Word)

                      ThrowUnexpectedToken();

                  return TokenValue;

              }

        cin
    
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              TypeReference ReadTypeReference() {

        cin
    
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                  var parts = ReadQTypeName();

        cin
    
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                  if (parts == null)

                      return null;

        cin
    
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                  var genericParameters = ReadGenericParams();

                  var typeReference = TypeReference.Create(

                      string.Join(".", parts, 0, parts.Length - 1),

                      parts[parts.Length - 1],

                      genericParameters.Length

                  );

                  if (genericParameters.Length > 0 && genericParameters.All(x => x != null))

                      typeReference = typeReference.MakeGenericType(genericParameters);

                  typeReference = ReadArraySpec(typeReference);

                  if(Token == TokenType.Plus)

                      return ReadNestedType(typeReference);

                  return typeReference;

              }

              TypeReference ReadNestedType(TypeReference declaringType) {

                  var name = ReadNQTypeName();

                  if(string.IsNullOrEmpty(name))

                      throw new FormatException("Nested type name can't be empty");

                  ReadToken();

                  var genericParameters = ReadGenericParams();

                  var typeReference = declaringType.Create(

                      name,

                      genericParameters.Length

                  );

        cin
    
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        cin
    
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                  if (genericParameters.Length > 0 && genericParameters.All(x => x != null))

                      typeReference = typeReference.MakeGenericType(genericParameters);

                  typeReference = ReadArraySpec(typeReference);

                  if(Token == TokenType.Plus)

                      return ReadNestedType(typeReference);

                  return typeReference;

              }

              TypeReference[] ReadGenericParams() {

                  if (Token == TokenType.OpenList) {

                      var genericParameters = ReadTypeReferenceList();

                      if (Token != TokenType.CloseList)

                          ThrowUnexpectedToken();

                      ReadToken();

                      return genericParameters;

                  }

                  return Array.Empty<TypeReference>();

              }

              TypeReference ReadArraySpec(TypeReference typeReference) {

                  while (Token == TokenType.OpenArray) {

                      var rank = CountRank();

                      if (Token != TokenType.CloseArray)

                          ThrowUnexpectedToken();

                      typeReference = typeReference.MakeArrayType(rank);

                      ReadToken();

        cin
    
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                  }

                  return typeReference;

              }

        cin
    
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              int CountRank() {

                  int rank = 0;

                  do {

                      rank++;

                  } while(ReadToken() && Token == TokenType.Comma);

                  return rank;

        cin
    
Refactoring...

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              }

        cin
    
Working on Unity xml configuration

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              TypeReference[] ReadTypeReferenceList() {

        cin
    
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                  var list = new List<TypeReference>();

        cin
    
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        cin
    
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                  do {

                      var typeReference = ReadTypeReference();

                      list.Add(typeReference);

                  } while (Token == TokenType.Comma);

                  return list.ToArray();

        cin
    
Working on Unity xml configuration

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              }

              void ThrowUnexpectedToken() {

        cin
    
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                  throw new FormatException($"Unexpected '{Token}' at pos {TokenPos}: -->{m_text.Substring(TokenPos, Math.Min(m_text.Length - TokenPos, 10))}");

        cin
    
Working on Unity xml configuration

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              }

          }

      }

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cin Working on Unity xml configuration	r267	using System;
		using System.Collections.Generic;
cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	using System.Linq;
cin Working on Unity xml configuration	r267	using System.Text.RegularExpressions;

		namespace Implab.ServiceHost.Unity {
cin Implemented typereference parser	r268	internal class TypeReferenceParser {
cin Working on Unity xml configuration	r267	enum TokenType {
		None,

		Word,

		Dot,

		Comma,

		OpenList,

		CloseList,

cin Refactoring...	r277	OpenArray,

		CloseArray,

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	Plus,

cin Working on Unity xml configuration	r267	Eof
		}

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	readonly Regex _tokens = new Regex(@"\G(?:([\w]+)\|\s([\+\.{},\[\]])\s)", RegexOptions.Compiled);
cin Working on Unity xml configuration	r267
		TokenType m_token;

		string m_tokenValue;

		int m_pos;

cin Implemented typereference parser	r268	int m_tokenPos;

cin Working on Unity xml configuration	r267	readonly string m_text;

		TokenType Token { get { return m_token; } }

		string TokenValue { get { return m_tokenValue; } }

cin Implemented typereference parser	r268	int TokenPos { get { return m_tokenPos; } }

cin Working on Unity xml configuration	r267	public TypeReferenceParser(string text) {
		Safe.ArgumentNotEmpty(text, nameof(text));
		m_text = text;
		}

		bool ReadToken() {
		if (m_pos >= m_text.Length) {
		m_token = TokenType.Eof;
		m_tokenValue = null;
		return false;
		}

		var m = _tokens.Match(m_text, m_pos);

		if (m.Success) {
cin Implemented typereference parser	r268	m_tokenPos = m_pos;
cin Working on Unity xml configuration	r267	m_pos += m.Length;
		if (m.Groups[1].Success) {
		m_token = TokenType.Word;
		m_tokenValue = m.Groups[1].Value;
		} else if (m.Groups[2].Success) {
		m_tokenValue = null;
		switch (m.Groups[2].Value) {
		case "{":
		m_token = TokenType.OpenList;
		break;
		case "}":
		m_token = TokenType.CloseList;
		break;
		case ".":
		m_token = TokenType.Dot;
		break;
		case ",":
		m_token = TokenType.Comma;
		break;
cin Refactoring...	r277	case "[":
		m_token = TokenType.OpenArray;
		break;
		case "]":
		m_token = TokenType.CloseArray;
		break;
cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	case "+":
		m_token = TokenType.Plus;
		break;
cin Working on Unity xml configuration	r267	}
		}
		return true;
		}
		throw new FormatException($"Failed to parse '{m_text}' at pos {m_pos}");
		}

cin Implemented typereference parser	r268	public TypeReference Parse() {
		var result = ReadTypeReference();
cin Refactoring...	r277	if (Token != TokenType.Eof)
cin Implemented typereference parser	r268	ThrowUnexpectedToken();
		return result;
cin Working on Unity xml configuration	r267	}

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	string[] ReadQTypeName() {
cin Working on Unity xml configuration	r267	var parts = new List<string>();

		string current = null;
		bool stop = false;
		while ((!stop) && ReadToken()) {
		switch (Token) {
		case TokenType.Word:
		if (current != null)
		ThrowUnexpectedToken();
		current = TokenValue;
		break;
		case TokenType.Dot:
		if (current == null)
		ThrowUnexpectedToken();
		parts.Add(current);
		current = null;
		break;
		default:
		stop = true;
		break;
		}
		}
		if (current != null)
		parts.Add(current);

		if (parts.Count == 0)
		return null;

		return parts.ToArray();
		}

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	string ReadNQTypeName() {
		ReadToken();
		if (Token != TokenType.Word)
		ThrowUnexpectedToken();
		return TokenValue;
		}

cin Working on Unity xml configuration	r267	TypeReference ReadTypeReference() {

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	var parts = ReadQTypeName();
cin Working on Unity xml configuration	r267	if (parts == null)
		return null;

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	var genericParameters = ReadGenericParams();

		var typeReference = TypeReference.Create(
		string.Join(".", parts, 0, parts.Length - 1),
		parts[parts.Length - 1],
		genericParameters.Length
		);

		if (genericParameters.Length > 0 && genericParameters.All(x => x != null))
		typeReference = typeReference.MakeGenericType(genericParameters);

		typeReference = ReadArraySpec(typeReference);

		if(Token == TokenType.Plus)
		return ReadNestedType(typeReference);

		return typeReference;
		}

		TypeReference ReadNestedType(TypeReference declaringType) {
		var name = ReadNQTypeName();
		if(string.IsNullOrEmpty(name))
		throw new FormatException("Nested type name can't be empty");
		ReadToken();

		var genericParameters = ReadGenericParams();

		var typeReference = declaringType.Create(
		name,
		genericParameters.Length
		);
cin Working on Unity xml configuration	r267
cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	if (genericParameters.Length > 0 && genericParameters.All(x => x != null))
		typeReference = typeReference.MakeGenericType(genericParameters);

		typeReference = ReadArraySpec(typeReference);

		if(Token == TokenType.Plus)
		return ReadNestedType(typeReference);

		return typeReference;
		}

		TypeReference[] ReadGenericParams() {
		if (Token == TokenType.OpenList) {
		var genericParameters = ReadTypeReferenceList();
		if (Token != TokenType.CloseList)
		ThrowUnexpectedToken();
		ReadToken();

		return genericParameters;
		}

		return Array.Empty<TypeReference>();
		}

		TypeReference ReadArraySpec(TypeReference typeReference) {
		while (Token == TokenType.OpenArray) {
		var rank = CountRank();
		if (Token != TokenType.CloseArray)
		ThrowUnexpectedToken();

		typeReference = typeReference.MakeArrayType(rank);

		ReadToken();
cin Working on Unity xml configuration	r267	}

		return typeReference;
		}

cin Implab: added XmlDefaultSeializer (SerializersPool is now obsolete)...	r278	int CountRank() {
		int rank = 0;
		do {
		rank++;
		} while(ReadToken() && Token == TokenType.Comma);
		return rank;
cin Refactoring...	r277	}

cin Working on Unity xml configuration	r267	TypeReference[] ReadTypeReferenceList() {
cin Implemented typereference parser	r268	var list = new List<TypeReference>();
cin Working on Unity xml configuration	r267
cin Implemented typereference parser	r268	do {
		var typeReference = ReadTypeReference();
		list.Add(typeReference);
		} while (Token == TokenType.Comma);

		return list.ToArray();
cin Working on Unity xml configuration	r267	}

		void ThrowUnexpectedToken() {
cin Implemented typereference parser	r268	throw new FormatException($"Unexpected '{Token}' at pos {TokenPos}: -->{m_text.Substring(TokenPos, Math.Min(m_text.Length - TokenPos, 10))}");
cin Working on Unity xml configuration	r267	}

		}
		}