A compiler is a software tool which transforms source code written in a specified programming language into machine code that can be executed by a computer.
A compiler consists of the following modules:
Lexical analyzer: Breaks the source code into a sequence of tokens.
Syntax analyzer: Checks the source code for syntax errors and builds an abstract syntax tree (AST).
Semantic analyzer: Checks the source code for semantic errors and adds type information to the AST.
Intermediate code generator: Translates the AST into an intermediate representation of the code.
Code optimizer: Improves the intermediate code for efficient execution.
Code generator: Translates the optimized intermediate code into machine code.
Some compilers have additional modules such as error reporting and debugging facilities.
This Repo covers implementation of a simple compiler for a subset of the C programming language written in python implementing the following modules:
lexical analyser
semantic analyser
Intermediate Code Generator
Error checking and reporting
Semantic analyser - not as a standalone module
It is a simple compiler but its sophistication is in it simplicity
Vscode
Drawing software
python programming language
c programming language
Months and monthe of resaerch and coding
The text categories are specified with regular expressions
The technique is to combine those into a single master regular expression
and to loop over successive matches:
official re library documentation https://docs.python.org/3/library/re.html#:~:text=A%20regular%20expression%20(or%20RE,down%20to%20the%20same%20thing).