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|
require "lib/metaprogramming.nom"
# Error functions
rule [error!, panic!, fail!, abort!] =:
nomsu "error" []
rule [error %msg] =:
nomsu "error"[%msg]
compile [assert %condition %msg] to code: ".."
|if not (\(%condition as lua)) then
| nomsu:error(\(%msg as lua))
|end
parse [assert %condition] as: assert %condition (nil)
# String functions
rule [join %strs with glue %glue] =:
lua do> ".."
|local str_bits = {}
|for i,bit in ipairs(vars.strs) do str_bits[i] = nomsu:stringify(bit) end
|return table.concat(str_bits, vars.glue)
parse [join %strs] as: join %strs with glue ""
compile [capitalize %str, %str capitalized] to:
"(\(%str as lua)):gsub('%l', string.upper, 1)"
compile [say %str] to: ".."
|nomsu:writeln(nomsu:stringify(\(%str as lua)))
# Number ranges
compile [%start to %stop by %step, %start to %stop via %step] to: ".."
|nomsu.utils.range(\(%start as lua), \(%stop as lua), \(%step as lua))
parse [%start to %stop] as: %start to %stop by 1
# Random functions
lua> ".." # Seed
|math.randomseed(os.time());
|for i=1,20 do; math.random(); end;
compile [random number, random, rand] to: "math.random()"
compile [random int %n, random integer %n, randint %n] to: "math.random(\(%n as lua))"
compile [random from %low to %high, random number from %low to %high, rand %low %high] to:
"math.random(\(%low as lua), \(%high as lua))"
rule [random choice from %elements, random choice %elements, random %elements] =:
=lua "\(%elements)[math.random(#\(%elements))]"
# Math functions
compile [abs %, absolute value of %, | % |] to: "math.abs(\(% as lua))"
compile [sqrt %, square root of %] to: "math.sqrt(\(% as lua))"
compile [sin %, sine %] to: "math.sin(\(% as lua))"
compile [cos %, cosine %] to: "math.cos(\(% as lua))"
compile [tan %, tangent %] to: "math.tan(\(% as lua))"
compile [asin %, arc sine %] to: "math.asin(\(% as lua))"
compile [acos %, arc cosine %] to: "math.acos(\(% as lua))"
compile [atan %, arc tangent %] to: "math.atan(\(% as lua))"
compile [atan2 %y %x] to: "math.atan2(\(%y as lua), \(%x as lua))"
compile [sinh %, hyperbolic sine %] to: "math.sinh(\(% as lua))"
compile [cosh %, hyperbolic cosine %] to: "math.cosh(\(% as lua))"
compile [tanh %, hyperbolic tangent %] to: "math.tanh(\(% as lua))"
compile [ceil %, ceiling %] to: "math.ceil(\(% as lua))"
compile [exp %, e^ %] to: "math.exp(\(% as lua))"
compile [log %, ln %, natural log %] to: "math.log(\(% as lua))"
compile [log % base %base] to: "math.log(\(% as lua), \(%base as lua))"
compile [floor %] to: "math.floor(\(% as lua))"
compile [round %, % rounded] to: "math.floor(\(% as lua) + .5)"
rule [%n rounded to the nearest %rounder] =:
=lua "(\(%rounder))*math.floor(\(%n)/\(%rounder) + .5)"
compile [tau] to: "(2*math.pi)"
compile [pi] to: "math.pi"
compile [e] to: "math.e"
compile [golden ratio, phi] to: "((1 + math.sqrt(5)) / 2)"
# Common utility functions
compile [sum of %items, sum %items] to: "nomsu.utils.sum(\(%items as lua))"
compile [product of %items, product %items] to: "nomsu.utils.product(\(%items as lua))"
compile [all of %items] to: "nomsu.utils.all(\(%items as lua))"
compile [any of %items] to: "nomsu.utils.any(\(%items as lua))"
rule [avg of %items, average of %items] =:
=lua "(nomsu.utils.sum(\(%items))/#\(%items))"
compile [min of %items, smallest of %items, lowest of %items] to:
"nomsu.utils.min(\(%items as lua))"
compile [max of %items, biggest of %items, largest of %items, highest of %items] to:
"nomsu.utils.max(\(%items as lua))"
compile [min of %items by %value_expr] to:
".."
|nomsu.utils.min(\(%items as lua), function(item)
| local vars = setmetatable({['']=item}, {__index=vars})
| return \(%value_expr as lua)
|end)
compile [max of %items by %value_expr] to:
".."
|nomsu.utils.max(\(%items as lua), function(item)
| local vars = setmetatable({['']=item}, {__index=vars})
| return \(%value_expr as lua)
|end)
compile [sort %items] to: "table.sort(\(%items as lua))"
rule [sort %items by %key] =: =lua ".."
|nomsu.utils.sort(\(%items), function(x)
| return (\(%key))(nomsu, {['']=x});
|end)
# String utilities
compile [nl, newline, line feed, linefeed, lf] to: ".."
|"\n"
compile [tab] to: ".."
|"\t"
compile [bell] to: ".."
|"\a"
compile [cr, carriage return] to: ".."
|"\r"
compile [backspace] to: ".."
|"\b"
compile [form feed, formfeed] to: ".."
|"\f"
compile [vertical tab] to: ".."
|"\v"
lua> ".."
|do;
| local colors = {
| ["reset color"] = 0, bright = 1, dim = 2, underscore = 4, blink = 5,
| inverse = 7, hidden = 8, black = 30, red = 31, green = 32, yellow = 33,
| blue = 34, magenta = 35, cyan = 36, white = 37, ["on black"] = 40,
| ["on red"] = 41, ["on green"] = 42, ["on yellow"] = 43, ["on blue"] = 44,
| ["on magenta"] = 45, ["on cyan"] = 46, ["on white"] = 47,
| };
| for name,code in pairs(colors) do;
| local escape = "\\"\\\\27["..tostring(code).."m\\""
| nomsu:defmacro(name, function() return escape end, "");
| end;
|end;
|
