Mini Compiler for C language [Compiler Construction Project]

Compiler construction: Mini Compiler

Design and implement a compiler for the programming language having the following specifications:

1. Indentifier Rules

1. User defined as in C (Max length 6 character, not case sensitive)

2. Data Types:

Data types supported are:

1. Integer
2. String and
3. Character

3. Expressions

1. Arithmetic operators (+, -, *, /, %)
2. Uniray operator
3. Paranthesis
4. Only Integer supported
5. Relational expression to be supported

(>, <, >=, <=, ==, !=)

   f.    Constants same as in c (character string and integer) constants

e.g.    4int const

‘4’char const

“4”string const

4. Statements

1. Deleration statement

…….

2. Decleration nd initialization

=, ……

3. Assingment Statement

= …

4. Conditional statement (Nesting not allowed)

1. Simple if (nesting not allowed)

if then

       Endif

2. Switch Statement (nesting not allowed)

Switch()

Cases

        Value 1:

Break;

.

.

.

         Value n:

break;

Endcase

3. Repetition Statement (nesting not allowed)

1. Repeat

Until ()

2. While (relational expression)

Endwhile

3. For = start value, end value, inc/dec

………

Endfor

5. I/O Statement

1. Input ;
2. Output ;

6. Program Structure

Decleration:

Start

End

7. Requirements

• Write RE + CFG for the language
• Write Lexical Analysizer and RDP for the language
• Merge the semantic Analyser and the parser

Assembly code generation intel X86 based

__________________________________________________________________

MAIN PROJECT

This project will assemble the c code into assembly. The assembly routines that I have write and attached at the end can be used with MASAM to generate machine code (exe file).

Click Here to fork project on github.

Descriptino project Files: 

 1. ERRORS.h     // Error handling Library

 2. main.cpp        // Main Compiler Code

 3. main.exe        // Executable file of Main Compiler

 4. program.txt     //Sample Code in c that is to be compiled

 5. resource.h      // resources library

 6. textfile.txt         // Sample Code in c that is to be compiled

How to use mini Compiler:

1.  Start main.exe file.
2. Enter file name that you want to compile i.e(textfile.txt)
3. If there are no  errors in your program it will generate target code file i.e (target_textfile.asm) in the same  directory where mini compiler  is copied.
4. Assemble the code with any assembler to  generate machine code. Note: for input output statement I have  write assembly  routines  for decimal, hexadecimal, octal, binary.

MASAM assembly routines are included in the download package.

Screen Shoots:

MAIN SCREEN:

INPUT FILE:

TARGET OUTPUT CODE: