Compiler-using-php

description:

implementation the simple compiler using php

PROJECT is a case sensitive objects oriented Language. 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 types in compiler are very restricted as in table 1.

1- Project contain a full functional editor (comment, uncomment, put red line under wrong words, auto complete, navigation to function or class, line NO).

2- Project contain two buttons , one button called “Scan” to run scanner and other called “Parse” to run parser –parser must take output of scanner to do it’s task.

3- project contain a button named “Browse” that allows us to choose a file from a disk that allows us to parse or scan this file Without Showing what is inside the file and shows the output.

4- Comments in compiler includes multiple line comment is written between </ and />and single line comment is written as *** .Your parser must ignore all comments and white spaces.

5- Tokens and return values: You must build a dictionary to save Keywords that are defined in table 1 .

6- in complier system Language Delimiters (words and lines): The words are delimited by Space and tab. The line delimiter is semicolon (;) and newline.

7- Parser grammar rules:

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

Review the token in scanner(table 1):

Keywords	Meaning	Return Token
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	Character Type	Character
Sequence	Group of characters	String
Ipokf	Float type	Float
Sipokf	Signed Float type	SFloat
Valueless	Void Type	Void
Rational	Boolean type	Boolean
Endthis	Break immediately from a loop	Break
However/When	repeatedly execute code as long as condition is true	Loop
Respondwith	Return a value from a function	Return
Srap	grouped list of variables placed under one name	Struct
Scan–Conditionof	To switch between many cases	Switch
@| ^	Program Starting Symbols	Start Symbol
$|#	Program Ending Symbols	End Symbol
(+, -, *, /,)	Used to add, subtract, multiply and divide respectively	Arithmetic Operation
(&&, ||, ~)	Used to and, or and not repectively	Logic operators
(==, <, >, !=, <=, >=)	Used to describe relations	relational operators
=	Used to describe Assignment operation	Assignment operator
->	Used in Seop to access Seop elements	Access Operator
{,},[,]	Used to group class statements, statements or array index respectively	Braces
[0-9] and any combination	Used to describe numbers	Constant
“,’	Used in defining strings and single character reprctively	Quotation Mark
Require	Used to include one file in another	Inclusion

Contact

You can communicate by following e-mails If you have more questions about the project or to get the all src code :

o mohamedgasser230@gmail.com