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teal-src/util/jsonpointer.tl @ 12750:c882d2460bb1
util.promise: Remove line that was supposed to be removed in eb9814372c54
author | Matthew Wild <mwild1@gmail.com> |
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date | Fri, 07 Oct 2022 17:45:23 +0100 |
parent | 12496:87c3d45208ef |
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local enum ptr_error "invalid-table" "invalid-path" end local function unescape_token(escaped_token : string) : string local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~") return unescaped end local function resolve_json_pointer(ref : table, path : string) : any, ptr_error local ptr_len = #path+1 for part, pos in path:gmatch("/([^/]*)()") do local token = unescape_token(part) if not ref is table then return nil end local idx = next(ref) local new_ref : any if idx is string then new_ref = ref[token] elseif idx is integer then local i = tonumber(token) if token == "-" then i = #ref + 1 end new_ref = ref[i+1] else return nil, "invalid-table" end if pos as integer == ptr_len then return new_ref elseif new_ref is table then ref = new_ref elseif not ref is table then return nil, "invalid-path" end end return ref end return { resolve = resolve_json_pointer, }