Tslator: A Compiler for TSLANG

Tslator is a compiler for the TSLANG programming language, developed as part of the Compiler Design course at Babol Noshirvani University of Technology. TesLang is a simple C-like educational language featuring basic types, user-defined functions, arrays, conditionals, loops, and string handling.

Instructor and Developer of TSLANG: Dr. Gholami Rudi

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Language Features

TesLang supports the following data types:

• int: Integer values
• vector: Arrays of integers
• str: String literals
• mstr: Multi-line strings
• bool: Boolean values (true, false)

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Project Structure

File/Folder	Description
lexer.py	Lexical analyzer built with PLY
parser.py	Parser using TesLang grammar rules
AST.py	Abstract Syntax Tree node classes
SymbolTable.py	Symbol management, scoping, and type checking
SemanticAnalyzer.py	Performs semantic analysis and type validation
IRGenerator.py	Intermediate Representation (IR) code generation
main.py	Entry point of the compiler

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Project Phases

This compiler was developed in three main phases:

Phase 1 – Lexical Analysis

• Token recognition for all TesLang keywords and operators
• Support for nested comments (</ ... />)
• Error reporting for malformed tokens

Phase 2 – Parsing and Semantic Analysis

• PLY-based parser using a hand-written BNF grammar
• Construction of the Abstract Syntax Tree (AST)
• Symbol table construction with scoped entries
• Type checking and semantic validation (e.g., return consistency, redefinition, undeclared use)

Phase 3 – IR Code Generation

• Emits low-level IR resembling assembly
• Register allocation for variables and temporaries
• Correct return handling and expression evaluation

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Author

• @arianaariaei

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License

This project is licensed under the MIT License.

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