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local files = require 'files'
local guide = require 'parser.guide'
local lang = require 'language'
local opMap = {
['+'] = true,
['-'] = true,
['*'] = true,
['/'] = true,
['//'] = true,
['^'] = true,
['<<'] = true,
['>>'] = true,
['&'] = true,
['|'] = true,
['~'] = true,
['..'] = true,
}
local literalMap = {
['number'] = true,
['boolean'] = true,
['string'] = true,
['table'] = true,
}
return function (uri, callback)
local ast = files.getAst(uri)
if not ast then
return
end
local text = files.getText(uri)
guide.eachSourceType(ast.ast, 'binary', function (source)
if source.op.type ~= 'or' then
return
end
local first = source[1]
local second = source[2]
-- a + (b or 0) --> (a + b) or 0
do
if opMap[first.op and first.op.type]
and first.type ~= 'unary'
and not second.op
and literalMap[second.type]
and not literalMap[first[2].type]
then
callback {
start = source.start,
finish = source.finish,
message = lang.script('DIAG_AMBIGUITY_1', text:sub(first.start, first.finish))
}
end
end
-- (a or 0) + c --> a or (0 + c)
do
if opMap[second.op and second.op.type]
and second.type ~= 'unary'
and not first.op
and literalMap[second[1].type]
and not literalMap[second[2].type]
then
callback {
start = source.start,
finish = source.finish,
message = lang.script('DIAG_AMBIGUITY_1', text:sub(second.start, second.finish))
}
end
end
end)
end
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