Difference between revisions of "Macro Functions"
From GiderosMobile
| Line 2: | Line 2: | ||
'''Supported platforms:''' android, ios, mac, pc<br/> | '''Supported platforms:''' android, ios, mac, pc<br/> | ||
'''Available since:''' Gideros 2017.10<br/> | '''Available since:''' Gideros 2017.10<br/> | ||
| − | === Description === | + | === <translate>Description</translate> === |
<translate><br /> | <translate><br /> | ||
Macro Functions receive a list of tokens and output a string which will be pasted into code at compile time.<br /><br /> | Macro Functions receive a list of tokens and output a string which will be pasted into code at compile time.<br /><br /> | ||
| Line 17: | Line 17: | ||
To call macro function use it's name with parenthesis as with usual functions:<br /> | To call macro function use it's name with parenthesis as with usual functions:<br /> | ||
name(...arguments...)<br /><br /></translate> | name(...arguments...)<br /><br /></translate> | ||
| − | === Examples === | + | === <translate>Examples</translate> === |
'''Enumeration'''<br/> | '''Enumeration'''<br/> | ||
<source lang="lua"> | <source lang="lua"> | ||
| Line 47: | Line 47: | ||
{|- | {|- | ||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === Methods === | + | === <translate>Methods</translate> === |
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === Events === | + | === <translate>Events</translate> === |
| − | === Constants === | + | === <translate>Constants</translate> === |
|} | |} | ||
Revision as of 07:28, 24 August 2018
Supported platforms: android, ios, mac, pc
Available since: Gideros 2017.10
Description
Macro Functions receive a list of tokens and output a string which will be pasted into code at compile time.
name @ (| ...body... |)
You should use parenthesis around markers - '|' is the preferred marker. The same marker should be used to close macro body with closing parenthesis right after it.
You can use any of these markers.
\`~ ! # $ % ^ & * / + = |
You can redefine a macro with @@.
name @@ (| ...another_body... |)
To call macro function use it's name with parenthesis as with usual functions:
name(...arguments...)
Examples
Enumeration
enum @ (|
local t = ...
local r = {}
for i = 1, #t, 2 do
table.insert(r, t[i] .. " @ " .. i // 2 + 1)
end
print(table.concat(r, " "))
return table.concat(r, " ")
|)
enum(apple, orange, melon)
print(apple, orange, melon) --> 1 2 3
Turning off the print command
print @ (| return "" |)
Unroll loops
dotimes @ (|
local times = table.remove(..., 1)
return (table.concat(..., " ").." "):rep(times)
|)
local t = {}
dotimes(10 print "Boom!")
Methods |
EventsConstants |
