lexical-parser (#15)

add: 词法分析器剩下数字、标识符的细节处理以及错误处理

Co-authored-by: duqoo <92306417+duqoo@users.noreply.github.com>
Reviewed-on: PostGuard/Canon#15
Co-authored-by: Huaps <1183155719@qq.com>
Co-committed-by: Huaps <1183155719@qq.com>

Canon.Core/Enums/ErrorEnums.cs

@@ -0,0 +1,11 @@
+namespace Canon.Core.Enums;
+
+public enum LexemeErrorType
+{
+    IllegalNumberFormat,//数字格式不正确
+    UnknownCharacterOrString,//源代码包含无法识别的字符或字符串
+    UnclosedStringLiteral,//字符串字面量未闭合
+    UnclosedComment,//注释未闭合
+    InvalidEscapeSequence,//无效的转义字符
+    IllegalOperator,//非法的操作符
+}

Canon.Core/Enums/SemanticEnums.cs

@@ -93,7 +93,7 @@ public enum StateType
     Word,
     Digit,
     Delimiter,
-    Other
+    Operator
 }
 
 public enum BasicIdType