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local lpeg = require("lpeg")
--------------------------------------------------------------------------------
local tsep = lpeg.S(" ")
local tws = tsep ^ 1
local tnewline = lpeg.S("\n")
local tlowcasedword = lpeg.R("az") ^ 1
local tdigit = lpeg.locale()["digit"]
-- local talphanum = lpeg.locale()['alnum']
local tanyprintable = lpeg.locale()["print"]
local tcontrol = lpeg.locale()["cntrl"]
local function quoted(p)
return lpeg.S('"') * p * lpeg.S('"')
end
local function anythingbut(ch)
return (tanyprintable + tcontrol) - lpeg.S(ch)
end
local ttabtriggercomplex = quoted(tlowcasedword * lpeg.S("()[]?0123456789-") ^ 1)
-- TODO This is just retarded
local ttabtriggerweird = lpeg.S("!") * (lpeg.R("az") + lpeg.S("?()")) ^ 1 * lpeg.S("!")
local ttabtriggerweird2 = lpeg.P("#!")
local ttabtrigger = ttabtriggercomplex + ttabtriggerweird + ttabtriggerweird2 + tlowcasedword
local tdescription = quoted(lpeg.Cg((tanyprintable - lpeg.S('"')) ^ 1, "description"))
local toption = lpeg.R("az")
local tstartsnippet = lpeg.P("snippet")
* tws
* lpeg.Cg(ttabtrigger, "tabtrigger")
* tws
* tdescription
* tws ^ 0
* lpeg.Cg(toption ^ 0, "options")
local tendsnippet = lpeg.P("endsnippet")
-- The content parsing needs cleanup, its really convoluted due to me learning
-- lpeg while using it
--tcontent = ((tanyprintable + tcontrol)^1 - tendsnippet) * tnewline
local tcontent = ((lpeg.S(" \t") + tanyprintable) ^ 1 - tendsnippet) * tnewline
local tsnippet = tstartsnippet * tnewline * ((tendsnippet * tnewline) + lpeg.Cg(tcontent ^ 1, "content"))
local tcomment = lpeg.S("#") * tanyprintable ^ 0 * tnewline
local tpriority = lpeg.P("priority") * tws * lpeg.Cg(lpeg.S("-") ^ 0 * tdigit ^ 1, "priority")
-- TODO doesn't work
local tsnippetsfile = (lpeg.Ct(tsnippet) + tpriority + tcomment + tnewline) ^ 1
-- TODO does parse values correctly, but parsing out nested tags will
-- require recursion at the callsite since I have no clue how to do it
local ttag = {
"T",
Expr = lpeg.C((lpeg.V("T") + anythingbut("}")) ^ 1),
Tnum = lpeg.Cg(tdigit ^ 1, "tagnum"),
Ps = lpeg.Cg(lpeg.Cp(), "selstart"),
Pe = lpeg.Cg(lpeg.Cp(), "selend"),
Tc = lpeg.V("Ps")
* lpeg.P("${")
* lpeg.V("Tnum")
* lpeg.S(":")
* lpeg.Cg(lpeg.V("Expr"), "expr")
* lpeg.V("Pe")
* lpeg.S("}"),
Ts = lpeg.V("Ps") * lpeg.S("$") * lpeg.V("Pe") * lpeg.V("Tnum"),
T = lpeg.V("Tc") + lpeg.V("Ts"),
}
--------------------------------------------------------------------------------
-- local testheader = [[
-- snippet #! "#!/usr/bin/env lua" b
-- ]]
local testcontent = [[
for ${1:idx},${2:val} in ipairs(${3:table_name}) do
$0
end
]]
local testsnippet = [[
snippet fori "ipair for foop" b
for ${1:idx},${2:val} in ipairs(${3:table_name}) do
$0
end
endsnippet
]]
local luasnippetfile = [[
priority -50
#################################
# Snippets for the Lua language #
#################################
snippet #! "#!/usr/bin/env lua" b
#!/usr/bin/env lua
$0
endsnippet
snippet !fun(ction)?! "New function" br
local function ${1:new_function}(${2:args})
$0
end
endsnippet
snippet forp "pair for loop" b
for ${1:name},${2:val} in pairs(${3:table_name}) do
$0
end
endsnippet
snippet fori "ipair for foop" b
for ${1:idx},${2:val} in ipairs(${3:table_name}) do
$0
end
endsnippet
snippet for "numeric for loop" b
for ${1:i}=${2:first},${3:last}${4/^..*/(?0:,:)/}${4:step} do
$0
end
endsnippet
snippet do "do block"
do
$0
end
endsnippet
snippet repeat "repeat loop" b
repeat
$1
until $0
endsnippet
snippet while "while loop" b
while $1 do
$0
end
endsnippet
snippet if "if statement" b
if $1 then
$0
end
endsnippet
snippet ife "if/else statement" b
if $1 then
$2
else
$0
end
endsnippet
snippet eif "if/elseif statement" b
if $1 then
$2
elseif $3 then
$0
end
endsnippet
snippet eife "if/elseif/else statement" b
if $1 then
$2
elseif $3 then
$4
else
$0
end
endsnippet
snippet pcall "pcall statement" b
local ok, err = pcall(${1:your_function})
if not ok then
handler(${2:ok, err})
${3:else
success(${4:ok, err})
}end
endsnippet
snippet local "local x = 1"
local ${1:x} = ${0:1}
endsnippet
# vim:ft=snippets:
]]
--------------------------------------------------------------------------------
-- Test
local function print_table(tableau, tabwidth)
if tabwidth == nil then
tabwidth = 0
end
-- Iterate
for k, v in pairs(tableau) do
local tabs = ("\t"):rep(tabwidth)
print(tabs .. k .. ': "' .. tostring(v) .. '"')
if type(v) == "table" then
print_table(v, tabwidth + 1)
end
end
end
do
print("------------ snippet test ------------------------------------")
local p = lpeg.Ct(tsnippet)
local t = p:match(testsnippet)
print_table(t)
print("--------------------------------------------------------------")
end
do
print("------------ snippetfile test ------------------------------------")
local p = lpeg.Ct(tsnippetsfile)
local t = p:match(luasnippetfile)
print_table(t)
print("--------------------------------------------------------------")
end
do
print("------------ tags test -------------------------------------")
local p = lpeg.Ct((lpeg.Ct(ttag) + tanyprintable + tcontrol) ^ 1)
local t = p:match(testcontent)
print_table(t)
print("--------------------------------------------------------------")
end
|
