Scanner nd Parser of Compiler

My own language is a case sensitive objects oriented . A program consists of class declaration which includes variables declaration and sequence of Methods declarations. Each method consists in turn of variable declarations and statements.

the Back-End of my Language is PHP

Review the token in scanner

I write basics of lang.. rest of some in code

source file of the program	Keywords	Meaning	Return Token
lexical Analyzer	Type	is the blueprint from which individual objects are created.	Class
	Infer	Inheritance in oop.	Inheritance
	If—Else	conditional statements	Condition
	Ipok	Integer type	Integer
	Sipok	Signed Integer type	SInteger
	Craf	Char type	Character
	Sequence	Group of characters	String
	However/When	repeatedly execute code as long as condition is true	Loop
	Srap	grouped list of variables placed under one name	Struct
	Scan –Conditionof	To switch between many cases	Switch

Parser grammar rules(Semantic Analysis)

      1. Program →Start-Symbols ClassDeclaration End-Symbols.
      2. Start-Symbols →@| ^
      3. End-Symbols→$ |#
      4. ClassDeclaration→ Type ID{ Class_Implementation} | Type ID Infer { 
      Class_Implementation}
      5. Class_Implementation→ Variable_Decl Class_Implementation| 
      Method_Decl Class_Implementation | Comment Class_Implementation | 
      require_command Class_Implementation| Func _Call 
      Class_Implementation |em
      6. Method_Decl→ Func Decl ;| Func Decl { Variable_Decl Statements }
      7. Func Decl →Type ID (ParameterList)
      8. Type → Ipok |Sipok |Craf |Sequence |Ipokf |Sipokf |Valueless |Rational
      9. ParameterList →em| None | Non-Empty List
      10. Non-Empty List→ Type ID | Non-Empty List , Type ID
      11. Variable_Decl→ em | Type ID_List ; Variable_Decl | Type ID_List 
      [ID] ; Variable_Decl
      12. ID_List →ID | ID_List , ID
      13. Statements→em | Statement Statements
      14. Statement→Assignment | If _Statement | However _Statement |
      when_Statement | Respondwith _ Statement | Endthis 
      _Statement|Scanvalur (ID ); | Print (Expression); | 
      15. Assignment→ Variable_Decl = Expression;
      16. Func _Call → ID (Argument_List) ;
      17. Argument_List →em | NonEmpty_Argument_List
      18. NonEmpty_Argument_List →Expression | NonEmpty_Argument_List , 
      Expression
      19. Block Statements→{ statements }
      20. If _Statement→ if (Condition _Expression) Block Statements | if 
      (Condition _Expression) Block Statements else Block Statements
      21. Condition _Expression→ Condition |Condition Condition _Op 
      Condition
      22. Condition _Op → && | || 
      23. Condition→ Expression Comparison _Op Expression 
      24. Comparison _Op → == | != | > | >= | < | <=
      25. However _Statement → However (Condition _Expression) Block 
      Statements
      26. when _Statement → when ( expression ; expression ; expression ) Block 
      Statements
      27. Respondwith _Statement→ Respondwith Expression ; | return ID ;
      28. Endthis _Statement→ Endthis;
      29. Expression → Term |Expression Add_Op Term
      30. Add_Op → + | -
      31. Term→Factor| Term Mul_Op Factor 
      32. Mul_Op→* | /
      33. Factor→ ID| Number
      34. Comment →</ STR /> | ***STR
      35. Require_command →Require(F_name.txt);
      36. F_name →STR

Output

input

1- @ Type Person{
2- Rational G() {
3- int frt=5;
4- when (in counter<num){
5- int reg3=reg3-1; } }} $

Scanner_Output

Line : 1 Token Text: @ Token Type: Start Symbol
Line : 1 Token Text: Type Token Type: Class
Line : 1 Token Text: Person Token Type: Identifier
Line : 1 Token Text: { Token Type: Braces
Line : 2 Token Text: Rational Token Type: Boolean
Line : 2 Token Text: G Token Type: Identifier
Line : 2 Token Text: ( Token Type: Braces

Parser_Output

Line : 1 Matched Rule used: Program and ClassDeclaration
Line : 2 Matched Rule used: Func Decl
Line : 3 Not Matched 
Total NO of errors: 1

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