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|
macro block init = ->
with require "moonp"
package.moonpath = "?.mp;./spec/inputs/?.mp"
""
$init!
import "macro_export" as {$myconfig:$config, :$showMacro, :$asserts, :$assert}
$asserts item == nil
$myconfig false
v = $assert item == nil
macro expr and = (...)->
values = [value for value in *{...}]
$showMacro "and", "#{ table.concat values, " and " }"
if $and f1!
print "OK"
if $and f1!, f2!, f3!
print "OK"
macro expr in = (target, ...)->
values = [value for value in *{...}]
$showMacro "in", table.concat ["#{target} == #{item}" for item in *values], " or "
if x |> $in "Apple", "Pig", "Dog"
print "exist"
macro expr map = (items, action)->
$showMacro "map", "[#{action} for _ in *#{items}]"
macro expr filter = (items, action)->
$showMacro "filter", "[_ for _ in *#{items} when #{action}]"
macro expr reduce = (items, def, action)->
$showMacro "reduce", "if ##{items} == 0
#{def}
else
_1 = #{def}
for _2 in *#{items}
_1 = #{action}
_1"
macro block foreach = (items, action)->
$showMacro "foreach", "for _ in *#{items}
#{action}"
macro expr pipe = (...)->
switch select "#", ...
when 0 then return ""
when 1 then return ...
ops = {...}
last = ops[1]
stmts = for i = 2, #ops
stmt = "\tlocal _#{i} = #{last} |> #{ops[i]}"
last = "_#{i}"
stmt
res = "do
#{table.concat stmts, "\n"}
#{last}"
$showMacro "pipe", res
{1,2,3} |> $map(_ * 2) |> $filter(_ > 4) |> $foreach print _
$foreach $filter($map({1,2,3}, _ * 2), _ > 4), print _
val = $pipe(
{1, 2, 3}
$map(_ * 2)
$filter(_ > 4)
$reduce(0, _1 + _2)
)
macro expr plus = (a, b)-> "#{a} + #{b}"
$plus(1,2)\call 123
res = 1 |> $plus 2
macro expr curry = (...)->
args = {...}
len = #args
body = args[len]
def = table.concat ["(#{args[i]})->" for i = 1, len - 1]
"#{def}\n#{body\gsub "^do%s*\n",""}"
f = $curry x,y,z,do
print x,y,z
macro expr get_inner = (var)-> "do
a = 1
a + 1"
macro expr get_inner_hygienic = (var)-> "(->
local a = 1
a + 1)!"
do
a = 8
a = $get_inner!
a += $get_inner!
print a
do
a = 8
a = $get_inner_hygienic!
a += $get_inner_hygienic!
print a
macro lua lua = (codes)-> "#{codes}"
x = 0
$lua [[
local function f(a)
return a + 1
end
x = x + f(3)
]]
print x
macro lua def = (fname, ...)->
args = {...}
last = table.remove args
$showMacro "def", "local function #{fname}(#{table.concat args, ', '})
#{last}
end"
sel = (a, b, c)-> if a then b else c
$def sel, a, b, c, [[
if a then
return b
else
return c
end
]]
$def dummy,[[
]]
import 'underscore' as _
macro expr chain = (...)-> $showMacro "chain",table.concat {...}, "\\"
a = $chain(
_({1, 2, 3, 4, -2, 3})
chain!
map(=> @ * 2)
filter(=> @ > 3)
value!
)
macro block chainB = (...)->
switch select "#", ...
when 0 then return ""
when 1 then return ...
items = {...}
last = nil
stmts = for i = 1,#items
stmt = if i == #items
lastStr = last and "#{last}\\" or ""
"\t#{lastStr}#{items[i]}"
else
lastStr = last and "#{last}\\" or ""
"\tlocal _#{i} = #{lastStr}#{items[i]}"
last = "_#{i}"
stmt
res = "do
#{table.concat stmts, '\n'}
"
$showMacro "chainB", res
$chainB(
_{1, 2, 3, 4, -2, 3}
chain!
map => @ * 2
filter => @ > 3
each => print @
)
macro block implicitReturnblockMacroIsAllowed = -> "123"
$implicitReturnblockMacroIsAllowed!
|
