From 1cbf9f3e07de9303283c747f7dbad61b77278819 Mon Sep 17 00:00:00 2001 From: Bruce Hill Date: Wed, 16 Jan 2019 16:38:15 -0800 Subject: Moved things into core/ --- lib/core/init.nom | 1 + lib/core/things.nom | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 142 insertions(+) create mode 100644 lib/core/things.nom (limited to 'lib/core') diff --git a/lib/core/init.nom b/lib/core/init.nom index 1319c5f..263c1d9 100644 --- a/lib/core/init.nom +++ b/lib/core/init.nom @@ -10,3 +10,4 @@ export "core/math" export "core/id" export "core/io" export "core/text" +export "core/things" diff --git a/lib/core/things.nom b/lib/core/things.nom new file mode 100644 index 0000000..c52eb5d --- /dev/null +++ b/lib/core/things.nom @@ -0,0 +1,141 @@ +#!/usr/bin/env nomsu -V6.15.13.8 +# + A library for simple object oriented programming. + +use "core/metaprogramming" +use "core/operators" +use "core/control_flow" +use "core/collections" +use "core/errors" + +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +test: + an (Empty) is a thing + a (Buffer) is a thing: + $its.is_a_buffer = (yes) + ($its, set up) means: + $its.bits or= [] + ($it, as text) means ($it.bits, joined) + [($its, add $bit), ($its, append $bit)] all mean: $its.bits, add $bit + assume (Buffer).is_a_buffer + $b = (a Buffer) + assume (type of $b) == "Buffer" + assume $b.is_a_buffer + assume "\$b" == "" + assume ($b, as text) == "" + $b = (a Buffer with {.bits = ["x"]}) + $b, + add "y" + append "z" + assume "\$b" == "xyz" + assume $b == (a Buffer with {.bits = ["x", "y", "z"]}) + assume $b != (a Buffer with {.bits = []}) + a (Comma Buffer) is a (Buffer): + ($it, as text) means ($it.bits, joined with ",") + ($its, number of commas) means ((#$its.bits) - 1) + $csv = (a Comma Buffer) + assume $csv.is_a_buffer + assume "\$csv" == "" + $csv, add "x" + $csv, add "y" + assume "\$csv" == "x,y" + assume ($csv, number of commas) == 1 + a (Vec) is a thing with {.x, .y}: + ($its, + $other) means (Vec {.x = ($its.x + $other.x), .y = ($its.y + $other.y)}) + + assume ((Vec {.x = 1, .y = 2}) + (Vec {.x = 10, .y = 10})) == + Vec {.x = 11, .y = 12} + + assume + ((Vec {.x = 1, .y = 2}) + (Vec {.x = 10, .y = 10})) != (Vec {.x = 0, .y = 0}) + +$METAMETHOD_MAP = { + ."as text" = "__tostring", ."clean up" = "__gc", ."+" = "__add", ."-" = "__sub" + ."*" = "__mul", ."/" = "__div", .negative = "__unm", ."//" = "__idiv" + .mod = "__mod", ."^" = "__pow", ."&" = "__band", ."|" = "__bor", ."~" = "__bxor" + ."~" = "__bnot", ."<<" = "__bshl", .">>" = "__bshr", ."==" = "__eq" + ."<" = "__lt", ."<=" = "__le", ."set 1 =" = "__newindex" + .size = "__len", .iterate = "__ipairs", ."iterate all" = "__pairs" +} + +$($ as text like a dict) = ({}'s metatable).__tostring +external: + [ + a $parent class named $classname with $members $(initialize $) + an $parent class named $classname with $members $(initialize $) + ] all mean: + $class = {.__type = $classname} + $class.__index = $class + $class.class = $class + $class.__tostring = ($ -> "\($.__type) \($ as text like a dict)") + $class.__eq = ({}'s metatable).__eq + $class.__len = ({}'s metatable).__len + if $members: + $class.__members = $members + $class.__newindex = + for ($its $key = $value): + if $members.$key: + rawset $its $key $value + ..else: + fail "Cannot set \$key, it's not one of the allowed member fields." + + set $class's metatable to { + .__index = $parent, .__tostring = ($class -> $class.__type) + .__call = + for ($class with $initial_values): + if ($initial_values == (nil)): return $class + set $initial_values's metatable to $class + if $initial_values.set_up: + $initial_values, set up + return $initial_values + } + + if $(initialize $): + initialize $class + for $stub = $metamethod in $METAMETHOD_MAP: + if $class.($stub, as lua id): + $class.$metamethod = $class.($stub, as lua id) + + return $class + + [ + a $classname is a $parent with $members $class_body + an $classname is a $parent with $members $class_body + a $classname is an $parent with $members $class_body + an $classname is an $parent with $members $class_body + ] all compile to: + $class_id = ($classname.stub, as lua id) + $lua = + Lua (" + \$class_id = a_1_class_named_2_with(\($parent as lua), \(quote $classname.stub), \ + ..\($members as lua)\( + ( + Lua (" + , function(\$class_id) + local it, its = \$class_id, \$class_id; + \($class_body as lua) + end + ") + ) if $class_body else "" + )) + a_\$class_id = function(initial_values) return \$class_id(initial_values or {}) end + an_\$class_id, a_\($class_id)_with, an_\($class_id)_with = a_\$class_id, a_\$class_id, a_\$class_id + ") + $lua, add free vars [$class_id, "a_\$class_id", "an_\$class_id"] + return $lua + + [ + a $classname is a thing with $members $class_body + an $classname is a thing with $members $class_body + a $classname is an thing with $members $class_body + an $classname is an thing with $members $class_body + ] all parse as (a $classname is a (nil) with $members $class_body) + + [a $classname is a thing $class_body, an $classname is a thing $class_body] + ..all parse as (a $classname is a (nil) with (nil) $class_body) + + [ + a $classname is a $parent $class_body, an $classname is a $parent $class_body + a $classname is an $parent $class_body, an $classname is an $parent $class_body + ] all parse as (a $classname is a $parent with (nil) $class_body) -- cgit v1.2.3