yloiseau

Playing with tail call optimisation emulation in Golo, I tried this code (inspired by https://github.com/kachayev/fn.py):

module TCO

union TcoResult = {
  Stop = { value }
  Continue = { arguments }
  Switch = { func, arguments }
}

yloiseau

Just played with the idea of allowing user-defined operators via macros...

This is working code.

If we continue this idea, right/left associativity and distributivity priority must be implemented (options of the &operator macro).

module MacroOperators

union Option = {

yloiseau

class Human:
    def __init__(self, **kargs):
        object.__setattr__(self, '_fields', kargs)

    def __setattr__(self, name, value):
        self._fields[name] = value

    def __getattr__(self, name):
        return self._fields.get(name, None)

yloiseau

Index of my gists on Golo macros

Some of these gists may be outdated since the golo macro feature is still in progress. However, I keep these for references.

Comments, Questions and Discution

• https://gist.github.com/yloiseau/aa1d4abeeeee7838ca8d
• https://gist.github.com/yloiseau/8a8ce445cf9393239bec

(Maybe) Working Examples

yloiseau

Macro definition and compilation process

NOTE: this is a proposal, not the way thing are currently done.

For “global” macros

That is, macros that can be used in other modules, distributed as libraries, and so on.

Macros are just regular function. The module can contain all the usual constructs (struct, function, augment and so on).

yloiseau

Since the plumbing behind macro compilation in Golo is not finished yet, here is some instructions to test your first macros.

File MyTestMacro.class

module MyTestMacro

import gololang.macros.CodeBuilder

macro sayHello = |name| {
 let msg = constant("Hello " + name: getValue())

yloiseau

Yet another macro use case for golo

actual working code...

module SomeFunctions

function bar = |somethingWithV, a, b| -> somethingWithV: v() + a + b

yloiseau

This was working! It's no more the case

module StructMacro

import gololang.macros.CodeBuilder

function pokemon = |typeName, sound| -> toplevel(
  structure(): name(typeName: getValue())
 : members("name", "owner"),

yloiseau

RFC for macros in golo

Macros for Golo are becoming a reality 😄

See https://github.com/yloiseau/golo-lang/tree/wip/macro-quote

By the way, some choices need to be made, hence this RFC.

yloiseau

Keybase proof

I hereby claim:

• I am yloiseau on github.
• I am yloiseau (https://keybase.io/yloiseau) on keybase.
• I have a public key whose fingerprint is B879 D9A8 89E2 9890 4647 CC62 3A00 423E 5C41 F928

To claim this, I am signing this object: