Kopyt

Kopyt is a Kotlin programming language parser in pure Python, inspired by javalang library.

Installation

pip install -U kopyt

Features

• Supports Kotlin 1.5
• Zero dependency

Requirements

• Python 3.7+

Usage

from kopyt import Parser, node

code = """\
package main

import a.b
import x.y.z.*

fun main() {
    println("Hello, world!")
}
"""

parser = Parser(code)
result = parser.parse()

assert result.package is not None
assert result.package.name == "main"

assert len(result.imports) == 2
assert result.imports[0].name == "a.b"
assert result.imports[1].name == "x.y.z"
assert result.imports[1].wildcard

assert len(result.declarations) == 1
assert isinstance(result.declarations[0], node.FunctionDeclaration)
assert result.declarations[0].name == "main"
assert result.declarations[0].position.line == 6

print(result) # this will output a string similar to the original code

All nodes and its members can be found on kopyt/node.py.

Partial Parsing

It is possible to parse partial Kotlin code, for example you want to parse a function declaration:

from kopyt import Parser, node

code = "fun plusOne(x: Int) = x + 1"
parser = Parser(code)
result = parser.parse_function_declaration()

assert result.name == "plusOne"
assert len(result.parameters) == 1
assert result.parameters[0].name == "x"

All parse functions can be found on kopyt/parser.py.