Go-Interpreter-In-Python

A Go Interpreter written in Python using Lark a modern parsing library for Python, with @markserver

Golang Grammar: https://golang.org/ref/spec
Lark: https://github.com/lark-parser/lark

If you want extend the project or reuse it, citate this project repository

Supported restriction:

Data types:

• Integer
• Boolean
• String
• Array Type

Arithmetic operators:

• Addition(+)
• Subtraction(-)
• Multiplication(*)
• Division (/)

Comparison Operators:

• Equal to(a == b)
• Not equal to(a != b)
• Greater than(a > b)
• Less than (a < b)
• Greater or equal to (a >= b)
• Less or equal to (a <= b)

Logical Operators:

• Logical NOT (!a)
• Logical AND (a && b)
• Logical OR (a || b)

Branching instructions:

• If Statement
• Else Statement
• Else If Statement

Loop Instructions:

• For Statement (works as While in Go)

Input Instructions:

• Keyboard input

Output Instructions:

• Print in command window

Execution methods:

• REPL mode
• Script file mode

Errors handled

1. Lexical error (missing or wrong symbols)

2. Syntax error:

   • UnmatchedParenthesis number in statement
   • MissingValue in variable declaration

3. Semantic error:

   • ArrayOutOfLenght when we declare an array
   • TypeDifferentError for variable type declaration
   • UnsupportedOperationType for all operation of different type

Execution mode

1. Install Python (3.9.4 our version if you have problems)
   
2. pip install lark
   

REPL mode:

python main.py

Script mode:

python main.py -s (--script) script_test\test_*.go (PATH_to_file\file.go)

Debug mode (displays parse tree):

python main.py -d (--debug)
Supported both of REPL and Script mode

Or using the executable file go.exe from PowerShell/CMD - release v0.1-alpha