bug: failed to parse a bracketed keyword list

[mhanberg]

Description

There was an instance where I was writing an ExUnit test, and was adding another key into a @tag. The parser raised the following exception.

[Error] ** (FunctionClauseError) no function clause matching in Spitfire.parse_kw_identifier/1
    (spitfire 0.1.0) lib/spitfire.ex:501: Spitfire.parse_kw_identifier(%{tokens: [{:kw_identifier, {60, 10, ~c"timeout"}, :timeout}, {:int, {60, 19, 120000}, ~c"120_000"}, {:eol, {60, 26, 1}}, {:identifier, {63, 5, ~c"test"}, :test}, {:bin_string, {63, 10, nil}, ["somestring"]}, {:",", {63, 91, 0}}, {:%{}, {63, 93, nil}}, {:"{", {63, 94, nil}}, {:eol, {63, 95, 1}}, {:kw_identifier, {64, 7, ~c"foo"}, :foo}, {:identifier, {64, 17, ~c"foo"}, :foo}, {:eol, {64, 25, 1}}, {:"}", {65, 5, 1}}, {:do, {65, 7, nil}}, {:eol, {65, 9, 1}}, {:identifier, {66, 7, ~c"file"}, :file}, {:match_op, {66, 12, nil}, :=}, {:bin_string, {66, 14, nil}, ["somestring", {{66, 46, nil}, {66, 56, nil}, [{:identifier, {66, 48, ~c"foo"}, :foo}]}, "somestring"]}, {:eol, {66, 70, 2}}, {:identifier, {68, 7, ~c"foo"}, :foo}, {:match_op, {68, 18, nil}, :=}, {:alias, {68, 20, ~c"foo"}, :foo}, {:., {68, 30, nil}}, {:paren_identifier, {68, 31, ~c"load"}, :load}, {:"(", {68, 35, nil}}, {:identifier, {68, 36, ~c"file"}, :file}, {:",", {68, 40, 0}}, {:atom, {68, 42, ~c"local"}, :local}, {:")", {68, 48, nil}}, {:eol, {68, 49, 2}}, {:identifier, {70, 7, ~c"bar"}, :bar}, {:match_op, {70, 19, nil}, :=}, {:paren_identifier, {70, 21, ~c"bar"}, :bar}, {:"(", {70, 32, nil}}, {:identifier, {70, 33, ~c"foo"}, :foo}, {:")", {70, 41, nil}}, {:eol, {70, 42, 1}}, {:"{", {71, 7, nil}}, {:identifier, {71, 8, ~c"messages"}, :messages}, {:",", {71, 16, 0}}, {:identifier, {71, 18, ~c"_baz"}, :_baz}, {:"}", {71, 26, nil}}, {:match_op, {71, 28, nil}, :=}, {:paren_identifier, {71, 30, ~c"alice"}, :alice}, {:"(", {71, 45, ...}}, {:identifier, {71, ...}, :foo}, {:")", {...}}, {:eol, ...}, {...}, ...], literal_encoder: #Function<0.120709541/2 in NextLS.DocumentSymbol.fetch/1>, errors: [], current_token: {:at_op, {60, 5, nil}, :@}, fuel: 150, peek_token: {:identifier, {60, 6, ~c"tag"}, :tag}, nesting: 1})
    (spitfire 0.1.0) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
    (spitfire 0.1.0) lib/spitfire.ex:533: Spitfire.parse_bracketless_kw_list/1
    (spitfire 0.1.0) lib/spitfire.ex:277: Spitfire.parse_expression/6
    (spitfire 0.1.0) lib/spitfire.ex:1871: Spitfire.parse_identifier/1
    (spitfire 0.1.0) lib/spitfire.ex:277: Spitfire.parse_expression/6
    (spitfire 0.1.0) lib/spitfire.ex:618: Spitfire.parse_prefix_expression/1
    (spitfire 0.1.0) lib/spitfire.ex:277: Spitfire.parse_expression/6