Crashes on elixir_sense test suite

[lukaszsamson]

Here's a list of crashes I noticed when trying out Spitfire on elixir_sense parser tests

defmodule MyModule do
  import List

end

defmodule MyModule do
  import List
; (__cursor__())
end

     ** (RuntimeError) semicolon
     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:272: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:950: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire/while.ex:10: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:942: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:940: Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:192: anonymous fn/1 in Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:191: Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire.ex:137: Spitfire.parse/2

defmodule MyModule do
  use EnumFake
  import List
  foo()

end

defmodule MyModule do
  use EnumFake
  import List
  foo()
; (__cursor__())
end

     ** (RuntimeError) semicolon
     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:272: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:950: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire/while.ex:10: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:942: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:940: Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:192: anonymous fn/1 in Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:191: Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire.ex:137: Spitfire.parse/2

defmodule MyModule do
  import List
  var = '#{
end

     ** (CaseClauseError) no case clause matching: {:error, {[line: 4, column: 1], {~c"unexpected reserved word: ", []}, ~c"end"}, ~c"'\#{\nend\n", [{{3, 9}, ~c"single-quoted strings represent charlists. Use ~c\"\" if you indeed want a charlist or use \"\" instead"}], [{:match_op, {3, 7, nil}, :=}, {:identifier, {3, 3, ~c"var"}, :var}, {:eol, {2, 14, 1}}, {:alias, {2, 10, ~c"List"}, :List}, {:identifier, {2, 3, ~c"import"}, :import}, {:eol, {1, 22, 1}}, {:do, {1, 20, nil}}, {:alias, {1, 11, ~c"MyModule"}, :MyModule}, {:identifier, {1, 1, ~c"defmodule"}, :defmodule}]}
     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:1990: Spitfire.tokenize/2
       (spitfire 0.1.3) lib/spitfire.ex:2054: Spitfire.new/2
       (spitfire 0.1.3) lib/spitfire.ex:129: Spitfire.parse/2

defmodule MyModule do
  import List
  var = '
end

     ** (CaseClauseError) no case clause matching: {:error, {[opening_delimiter: :"'", expected_delimiter: :"'", line: 3, column: 9, end_line: 5, end_column: 1], [[109, 105, 115, 115, 105, 110, 103, 32, 116, 101, 114, 109, 105, 110, 97, 116, 111, 114, 58, 32, ~c"'"], ~c" (for string starting at line 3)"], []}, ~c"'\nend\n", [{{3, 9}, ~c"single-quoted strings represent charlists. Use ~c\"\" if you indeed want a charlist or use \"\" instead"}], [{:match_op, {3, 7, nil}, :=}, {:identifier, {3, 3, ~c"var"}, :var}, {:eol, {2, 14, 1}}, {:alias, {2, 10, ~c"List"}, :List}, {:identifier, {2, 3, ~c"import"}, :import}, {:eol, {1, 22, 1}}, {:do, {1, 20, nil}}, {:alias, {1, 11, ~c"MyModule"}, :MyModule}, {:identifier, {1, 1, ~c"defmodule"}, :defmodule}]}
     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:1990: Spitfire.tokenize/2
       (spitfire 0.1.3) lib/spitfire.ex:2054: Spitfire.new/2
       (spitfire 0.1.3) lib/spitfire.ex:129: Spitfire.parse/2

This one seems to be already reported in #26

defmodule MyModule do
  IO.inspect(
    :stderr,
    label: "label",
    limit:
  )
end

defmodule MyModule do
  IO.inspect(
    :stderr,
    label: "label",
(__cursor__())
  )
end

     ** (FunctionClauseError) no function clause matching in Spitfire.parse_kw_identifier/1

     The following arguments were given to Spitfire.parse_kw_identifier/1:

         # 1
         %{tokens: [{:"(", {5, 12, nil}}, {:")", {5, 13, nil}}, {:")", {5, 14, nil}}, {:eol, {5, 15, 1}}, {:")", {6, 3, 1}}, {:eol, {6, 4, 1}}, {:end, {7, 1, nil}}, {:eol, {7, 4, 1}}, :eof], literal_encoder: nil, errors: [], current_token: {:"(", {5, 1, nil}}, fuel: 150, peek_token: {:paren_identifier, {5, 2, ~c"__cursor__"}, :__cursor__}, nesting: 0}

     Attempted function clauses (showing 2 out of 2):

         defp parse_kw_identifier(%{current_token: {:kw_identifier, meta, token}} = parser)
         defp parse_kw_identifier(%{current_token: {:kw_identifier_unsafe, meta, tokens}} = parser)

     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:519: Spitfire.parse_kw_identifier/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:551: Spitfire.parse_bracketless_kw_list/1
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:611: anonymous fn/4 in Spitfire.parse_comma_list/4
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:602: Spitfire.parse_comma_list/4
       (spitfire 0.1.3) lib/spitfire.ex:1817: Spitfire.parse_paren_identifier/1
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:1059: Spitfire.parse_dot_expression/2
       (spitfire 0.1.3) lib/spitfire/while.ex:52: Spitfire.While.do_while/2
       (spitfire 0.1.3) lib/spitfire.ex:950: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:942: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:940: Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:192: anonymous fn/1 in Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:191: Spitfire.parse_program/1

defmodule MyModule do
  IO.inspect(
    :stderr,
    label: "label",
    limit
  )
end

     ** (FunctionClauseError) no function clause matching in Spitfire.parse_kw_identifier/1

     The following arguments were given to Spitfire.parse_kw_identifier/1:

         # 1
         %{tokens: [{:")", {6, 3, 1}}, {:eol, {6, 4, 1}}, {:end, {7, 1, nil}}, {:eol, {7, 4, 1}}, :eof], literal_encoder: nil, errors: [], current_token: {:identifier, {5, 5, ~c"limit"}, :limit}, fuel: 150, peek_token: {:eol, {5, 10, 1}}, nesting: 0}

     Attempted function clauses (showing 2 out of 2):

         defp parse_kw_identifier(%{current_token: {:kw_identifier, meta, token}} = parser)
         defp parse_kw_identifier(%{current_token: {:kw_identifier_unsafe, meta, tokens}} = parser)

     stacktrace:
       (spitfire 0.1.3) lib/spitfire.ex:519: Spitfire.parse_kw_identifier/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:551: Spitfire.parse_bracketless_kw_list/1
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:611: anonymous fn/4 in Spitfire.parse_comma_list/4
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:602: Spitfire.parse_comma_list/4
       (spitfire 0.1.3) lib/spitfire.ex:1817: Spitfire.parse_paren_identifier/1
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:1059: Spitfire.parse_dot_expression/2
       (spitfire 0.1.3) lib/spitfire/while.ex:52: Spitfire.While.do_while/2
       (spitfire 0.1.3) lib/spitfire.ex:950: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:942: anonymous fn/1 in Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:940: Spitfire.parse_do_block/2
       (spitfire 0.1.3) lib/spitfire.ex:297: Spitfire.parse_expression/6
       (spitfire 0.1.3) lib/spitfire.ex:192: anonymous fn/1 in Spitfire.parse_program/1
       (spitfire 0.1.3) lib/spitfire/while.ex:5: Spitfire.While2.recurse/3
       (spitfire 0.1.3) lib/spitfire.ex:191: Spitfire.parse_program/1