commit 1146fec33650f67fb75f69579b0c85d74fee3d6e Author: benrob0329 Date: Thu May 6 20:44:05 2021 -0400 Initial Commit diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..0e259d4 --- /dev/null +++ b/LICENSE @@ -0,0 +1,121 @@ +Creative Commons Legal Code + +CC0 1.0 Universal + + CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE + LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN + ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS + INFORMATION ON AN "AS-IS" BASIS. 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Affirmer understands and acknowledges that Creative Commons is not a + party to this document and has no duty or obligation with respect to + this CC0 or use of the Work. diff --git a/README.md b/README.md new file mode 100644 index 0000000..338f73c --- /dev/null +++ b/README.md @@ -0,0 +1,28 @@ +# lua-lambda +Takes a string, returns a function for quick function definition. + +## Usage +The lambda format is as follows: +```Lua +l"(args) expr" +``` + +Example: +```Lua +local l = require("lambda") -- Omit this in Minetest mods + +local add_one = l"(x) x+1" +print(add_one(5)) --> 6 +``` + +## Installation +### Luarocks +```Bash +luarocks install lambda +``` + +### Minetest +This module is availible on Minetest's [ContentDB](https://content.minetest.net/), simple add `lambda` as a dependancy to your `mod.conf` and Minetest will automatically install the module for end-users. If you wish to manually install this, then you can either clone the repositiory and add it to your `mods/` folder or download it [here](https://content.minetest.net/packages/benrob0329/lambda/). + +## Why? +Because Lua needs more atomic modules which add functionality without creating a huge library. This module is supposed to be dead-simple to grab and start using in your project without adding anything extra. One of Lua's strengths is minimalism, and I think that it's ecosystem would do well to mirror that. \ No newline at end of file diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..ca523bc --- /dev/null +++ b/init.lua @@ -0,0 +1,3 @@ +local PATH = minetest.get_modpath(minetest.get_current_modname()) .. "/" + +l = dofile(PATH .. "lambda.lua") diff --git a/lambda-1.0-1.rockspec b/lambda-1.0-1.rockspec new file mode 100644 index 0000000..6ab7b1c --- /dev/null +++ b/lambda-1.0-1.rockspec @@ -0,0 +1,26 @@ +package = "lambda" +version = "1.0-1" +source = { + url = "https://gitlab.com/benrob0329/lua-lambda", + tag = "v1.0", +} + +description = { + summary = "Atomic lambda string-parser", + detailed = [[ + Compact lambda function which takes a string and returns a load()ed function. + Syntax: l"(args) expr" + Example: l"(x,y) x+y" + ]] +} + +dependencies = { + "lua >= 5.1" +} + +build = { + type = "builtin", + modules = { + lambda = "lambda.lua" + } +} \ No newline at end of file diff --git a/lambda.lua b/lambda.lua new file mode 100644 index 0000000..44c7563 --- /dev/null +++ b/lambda.lua @@ -0,0 +1,26 @@ +local load = loadstring or load + +local lambda_template = "return function %s return %s end" +local cache = {} + +-- Lambda Format: l"(args) exp" +local function l(s, env) + if not cache[s] then + cache[s] = load(lambda_template:format(s:match("(%b()) (.+)$")))() + end + return cache[s] +end + +-- Tests -- +do + local x = "Test" + local f = l"(x) x" + assert(f(x) == x, "Lambda Test Failed!") +end +do + local t = {1,2,3,4,5,6,7,8,9} + table.sort(t, l"(a,b) a > b") + assert(t[1] == 9, "Lamba Test Failed!") +end + +return l diff --git a/mod.conf b/mod.conf new file mode 100644 index 0000000..8e6c1f2 --- /dev/null +++ b/mod.conf @@ -0,0 +1 @@ +name = lambda \ No newline at end of file