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local files = require 'files'
local searcher = require 'core.searcher'
local vm = require 'vm'
local getLabel = require 'core.hover.label'
local getDesc = require 'core.hover.description'
local util = require 'utility'
local findSource = require 'core.find-source'
local lang = require 'language'
local markdown = require 'provider.markdown'
local infer = require 'core.infer'
local function eachFunctionAndOverload(value, callback)
callback(value)
if not value.bindDocs then
return
end
for _, doc in ipairs(value.bindDocs) do
if doc.type == 'doc.overload' then
callback(doc.overload)
end
end
end
local function getHoverAsValue(source)
local label = getLabel(source)
local desc = getDesc(source)
if not desc then
local values = vm.getDefs(source)
for _, def in ipairs(values) do
desc = getDesc(def)
if desc then
break
end
end
end
return {
label = label,
source = source,
description = desc,
}
end
local function getHoverAsFunction(source)
local values = vm.getDefs(source)
local desc = getDesc(source)
local labels = {}
local defs = 0
local protos = 0
local other = 0
local mark = {}
for _, def in ipairs(values) do
def = searcher.getObjectValue(def) or def
if def.type == 'function'
or def.type == 'doc.type.function' then
eachFunctionAndOverload(def, function (value)
if mark[value] then
return
end
mark[value] =true
local label = getLabel(value)
if label then
defs = defs + 1
labels[label] = (labels[label] or 0) + 1
if labels[label] == 1 then
protos = protos + 1
end
end
desc = desc or getDesc(value)
end)
elseif def.type == 'table'
or def.type == 'boolean'
or def.type == 'string'
or def.type == 'number' then
other = other + 1
desc = desc or getDesc(def)
end
end
if defs == 0 then
return getHoverAsValue(source)
end
if defs == 1 and other == 0 then
return {
label = next(labels),
source = source,
description = desc,
}
end
local lines = {}
if defs > 1 then
lines[#lines+1] = lang.script('HOVER_MULTI_DEF_PROTO', defs, protos)
end
if other > 0 then
lines[#lines+1] = lang.script('HOVER_MULTI_PROTO_NOT_FUNC', other)
end
if defs > 1 then
for label, count in util.sortPairs(labels) do
lines[#lines+1] = ('(%d) %s'):format(count, label)
end
else
lines[#lines+1] = next(labels)
end
local label = table.concat(lines, '\n')
return {
label = label,
source = source,
description = desc,
}
end
local function getHoverAsDocName(source)
local label = getLabel(source)
local desc = getDesc(source)
return {
label = label,
source = source,
description = desc,
}
end
local function getHover(source)
if source.type == 'doc.type.name' then
return getHoverAsDocName(source)
end
local isFunction = infer.hasType(source, 'function')
if isFunction then
return getHoverAsFunction(source)
else
return getHoverAsValue(source)
end
end
local accept = {
['local'] = true,
['setlocal'] = true,
['getlocal'] = true,
['setglobal'] = true,
['getglobal'] = true,
['field'] = true,
['method'] = true,
['string'] = true,
['number'] = true,
['doc.type.name'] = true,
['function'] = true,
}
local function getHoverByUri(uri, offset)
local ast = files.getAst(uri)
if not ast then
return nil
end
local source = findSource(ast, offset, accept)
if not source then
return nil
end
local hover = getHover(source)
return hover
end
return {
get = getHover,
byUri = getHoverByUri,
}
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