kopyt's Introduction

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.

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kopyt's Issues

parse kotlin code error ‘ (() -> Unit) ’

The following code will raise a ParserException，hope it can be fixed.

package com.test


class TestHandler {

    fun test() {
        val func = object :(() -> Unit) {
            override fun invoke() {
            }
        }
    }

}

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