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361 lines (319 loc) · 15.1 KB
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/*----------------------------------------------------------
This Source Code Form is subject to the terms of the
Mozilla Public License, v.2.0. If a copy of the MPL
was not distributed with this file, You can obtain one
at http://mozilla.org/MPL/2.0/.
----------------------------------------------------------*/
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Text;
using OneScript.Language.LexicalAnalysis;
namespace OneScript.Language
{
public static class LanguageDef
{
static readonly Dictionary<Token, int> _priority = new Dictionary<Token, int>();
static readonly Dictionary<string, Token> _stringToToken =
new Dictionary<string, Token>(StringComparer.InvariantCultureIgnoreCase);
const int BUILTINS_INDEX = (int)Token.ByValParam;
// structure
static LanguageDef()
{
_priority.Add(Token.Plus, 5);
_priority.Add(Token.Minus, 5);
_priority.Add(Token.Multiply, 6);
_priority.Add(Token.Division, 6);
_priority.Add(Token.Modulo, 6);
_priority.Add(Token.UnaryPlus, 7);
_priority.Add(Token.UnaryMinus, 7);
_priority.Add(Token.Or, 1);
_priority.Add(Token.And, 2);
_priority.Add(Token.Not, 3);
_priority.Add(Token.Equal, 4);
_priority.Add(Token.MoreThan, 4);
_priority.Add(Token.LessThan, 4);
_priority.Add(Token.MoreOrEqual, 4);
_priority.Add(Token.LessOrEqual, 4);
_priority.Add(Token.NotEqual, 4);
// tokens
#region Ключевые слова
AddToken(Token.If, "если", "if");
AddToken(Token.Then, "тогда", "then");
AddToken(Token.Else, "иначе", "else");
AddToken(Token.ElseIf, "иначеесли", "elsif");
AddToken(Token.EndIf, "конецесли", "endif");
AddToken(Token.VarDef, "перем", "var");
AddToken(Token.ByValParam, "знач", "val");
AddToken(Token.Procedure, "процедура", "procedure");
AddToken(Token.EndProcedure, "конецпроцедуры", "endprocedure");
AddToken(Token.Function, "функция", "function");
AddToken(Token.EndFunction, "конецфункции", "endfunction");
AddToken(Token.For, "для", "for");
AddToken(Token.Each, "каждого", "each");
AddToken(Token.In, "из", "in");
AddToken(Token.To, "по", "to");
AddToken(Token.While, "пока", "while");
AddToken(Token.Loop, "цикл", "do");
AddToken(Token.EndLoop, "конеццикла", "enddo");
AddToken(Token.Return, "возврат", "return");
AddToken(Token.Continue, "продолжить", "continue");
AddToken(Token.Break, "прервать", "break");
AddToken(Token.Try, "попытка", "try");
AddToken(Token.Exception, "исключение", "except");
AddToken(Token.Execute, "выполнить", "execute");
AddToken(Token.RaiseException, "вызватьисключение", "raise");
AddToken(Token.EndTry, "конецпопытки", "endtry");
AddToken(Token.NewObject, "новый", "new");
AddToken(Token.Export, "экспорт", "export");
AddToken(Token.And, "и", "and");
AddToken(Token.Or, "или", "or");
AddToken(Token.Not, "не", "not");
#endregion
#region Операторы
AddToken(Token.Plus, "+");
AddToken(Token.Minus, "-");
AddToken(Token.Multiply, "*");
AddToken(Token.Division, "/");
AddToken(Token.LessThan, "<");
AddToken(Token.LessOrEqual, "<=");
AddToken(Token.MoreThan, ">");
AddToken(Token.MoreOrEqual, ">=");
AddToken(Token.NotEqual, "<>");
AddToken(Token.Modulo, "%");
AddToken(Token.OpenPar, "(");
AddToken(Token.ClosePar, ")");
AddToken(Token.OpenBracket, "[");
AddToken(Token.CloseBracket, "]");
AddToken(Token.Dot, ".");
AddToken(Token.Comma, ",");
AddToken(Token.Equal, "=");
AddToken(Token.Semicolon, ";");
AddToken(Token.Question, "?");
#endregion
#region Функции работы с типами
AddToken(Token.Bool, "булево", "boolean");
AddToken(Token.Number, "число", "number");
AddToken(Token.Str, "строка", "string");
AddToken(Token.Date, "дата", "date");
AddToken(Token.Type, "тип", "type");
AddToken(Token.ValType, "типзнч", "typeof");
#endregion
#region Встроенные функции
AddToken(Token.Eval, "вычислить", "eval");
AddToken(Token.StrLen, "стрдлина", "strlen");
AddToken(Token.TrimL, "сокрл", "triml");
AddToken(Token.TrimR, "сокрп", "trimr");
AddToken(Token.TrimLR, "сокрлп", "trimall");
AddToken(Token.Left, "лев", "left");
AddToken(Token.Right, "прав", "right");
AddToken(Token.Mid, "сред", "mid");
AddToken(Token.StrPos, "найти", "find");
AddToken(Token.UCase, "врег", "upper");
AddToken(Token.LCase, "нрег", "lower");
AddToken(Token.TCase, "трег", "title");
AddToken(Token.Chr, "символ", "char");
AddToken(Token.ChrCode, "кодсимвола", "charcode");
AddToken(Token.EmptyStr, "пустаястрока", "isblankstring");
AddToken(Token.StrReplace, "стрзаменить", "strreplace");
AddToken(Token.StrGetLine, "стрполучитьстроку", "strgetline");
AddToken(Token.StrLineCount, "стрчислострок", "strlinecount");
AddToken(Token.StrEntryCount, "стрчисловхождений", "stroccurrencecount");
AddToken(Token.Year, "год", "year");
AddToken(Token.Month, "месяц", "month");
AddToken(Token.Day, "день", "day");
AddToken(Token.Hour, "час", "hour");
AddToken(Token.Minute, "минута", "minute");
AddToken(Token.Second, "секунда", "second");
AddToken(Token.BegOfYear, "началогода", "begofyear");
AddToken(Token.BegOfMonth, "началомесяца", "begofmonth");
AddToken(Token.BegOfDay, "началодня", "begofday");
AddToken(Token.BegOfHour, "началочаса", "begofhour");
AddToken(Token.BegOfMinute, "началоминуты", "begofminute");
AddToken(Token.BegOfQuarter, "началоквартала", "begofquarter");
AddToken(Token.EndOfYear, "конецгода", "endofyear");
AddToken(Token.EndOfMonth, "конецмесяца", "endofmonth");
AddToken(Token.EndOfDay, "конецдня", "endofday");
AddToken(Token.EndOfHour, "конецчаса", "endofhour");
AddToken(Token.EndOfMinute, "конецминуты", "endofminute");
AddToken(Token.EndOfQuarter, "конецквартала", "endofquarter");
AddToken(Token.WeekOfYear, "неделягода", "weekofyear");
AddToken(Token.DayOfYear, "деньгода", "dayofyear");
AddToken(Token.DayOfWeek, "деньнедели", "dayofweek");
AddToken(Token.AddMonth, "добавитьмесяц", "addmonth");
AddToken(Token.CurrentDate, "текущаядата", "currentdate");
AddToken(Token.Integer, "цел", "int");
AddToken(Token.Round, "окр", "round");
AddToken(Token.Log, "log");
AddToken(Token.Log10, "log10");
AddToken(Token.Sin, "sin");
AddToken(Token.Cos, "cos");
AddToken(Token.Tan, "tan");
AddToken(Token.ASin, "asin");
AddToken(Token.ACos, "acos");
AddToken(Token.ATan, "atan");
AddToken(Token.Exp, "exp");
AddToken(Token.Pow, "pow");
AddToken(Token.Sqrt, "sqrt");
AddToken(Token.Min, "мин", "min");
AddToken(Token.Max, "макс", "max");
AddToken(Token.Format, "формат", "format");
AddToken(Token.ExceptionInfo, "информацияобошибке", "errorinfo");
AddToken(Token.ExceptionDescr, "описаниеошибки", "errordescription");
AddToken(Token.ModuleInfo, "текущийсценарий", "currentscript");
#endregion
}
private static void AddToken(Token token, string name)
{
_stringToToken.Add(name, token);
}
private static void AddToken(Token token, string name, string alias)
{
_stringToToken.Add(name, token);
_stringToToken.Add(alias, token);
}
public static Token GetToken(string tokText)
{
Token result;
if (_stringToToken.TryGetValue(tokText, out result))
{
return result;
}
else
{
return Token.NotAToken;
}
}
public static int GetPriority(Token op)
{
return _priority[op];
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsBuiltInFunction(Token token)
{
return (int)token > BUILTINS_INDEX;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsBinaryOperator(Token token)
{
return token == Token.Plus
|| token == Token.Minus
|| token == Token.Multiply
|| token == Token.Division
|| token == Token.Modulo
|| token == Token.And
|| token == Token.Or
|| token == Token.Not
|| token == Token.LessThan
|| token == Token.LessOrEqual
|| token == Token.MoreThan
|| token == Token.MoreOrEqual
|| token == Token.Equal
|| token == Token.NotEqual;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsLogicalBinaryOperator(Token token)
{
return token == Token.And || token == Token.Or;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsLiteral(ref Lexem lex)
{
return lex.Type == LexemType.StringLiteral
|| lex.Type == LexemType.NumberLiteral
|| lex.Type == LexemType.BooleanLiteral
|| lex.Type == LexemType.DateLiteral
|| lex.Type == LexemType.UndefinedLiteral
|| lex.Type == LexemType.NullLiteral;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsUserSymbol(ref Lexem lex)
{
return lex.Type == LexemType.Identifier && lex.Token == Token.NotAToken;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsIdentifier(ref Lexem lex)
{
return lex.Type == LexemType.Identifier;
}
public static bool IsValidIdentifier(string name)
{
if (string.IsNullOrEmpty(name))
return false;
if (!(char.IsLetter(name[0]) || name[0] == SpecialChars.Underscore))
return false;
for (int i = 1; i < name.Length; i++)
{
if (!(char.IsLetterOrDigit(name[i]) || name[i] == SpecialChars.Underscore))
return false;
}
return true;
}
public static Token[] BuiltInFunctions()
{
var values = Enum.GetValues(typeof(Token));
var result = new Token[values.Length - BUILTINS_INDEX - 1];
for (int i = BUILTINS_INDEX + 1, j = 0; i < values.Length; i++, j++)
{
result[j] = (Token)values.GetValue(i);
}
return result;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsBeginOfStatement(Token token)
{
switch (token)
{
case Token.VarDef:
case Token.If:
case Token.For:
case Token.While:
case Token.Try:
return true;
default:
return false;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsEndOfBlockToken(Token token)
{
return token == Token.EndIf
|| token == Token.EndProcedure
|| token == Token.EndFunction
|| token == Token.Else
|| token == Token.EndLoop
|| token == Token.EndTry
|| token == Token.EndOfText
|| token == Token.ElseIf;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsBooleanLiteralString(string value)
{
return string.Compare(value, "истина", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(value, "true", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(value, "ложь", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(value, "false", StringComparison.OrdinalIgnoreCase) == 0;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsUndefinedString(string value)
{
return string.Compare(value, "неопределено", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(value, "undefined", StringComparison.OrdinalIgnoreCase) == 0;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsNullString(string value)
{
return string.Compare(value, "Null", StringComparison.OrdinalIgnoreCase) == 0;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool IsLogicalOperatorString(string content)
{
return string.Compare(content, "и", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(content, "или", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(content, "не", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(content, "and", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(content, "or", StringComparison.OrdinalIgnoreCase) == 0
|| string.Compare(content, "not", StringComparison.OrdinalIgnoreCase) == 0;
}
}
}
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