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Linting some files results in IndexError: list index out of range slicing error

See original GitHub issue

Using dbt templater and 0.4.0a3. Full stacktrace:

Traceback (most recent call last):
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/bin/sqlfluff", line 11, in <module>
    load_entry_point('sqlfluff', 'console_scripts', 'sqlfluff')()
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/lib/python3.6/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/niallwoodward/dev/pull_requests/dbt_sqlfluff_venv/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/cli/commands.py", line 323, in lint
    ignore_files=not disregard_sqlfluffignores,
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/linter.py", line 1161, in lint_paths
    ignore_files=ignore_files,
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/linter.py", line 1139, in lint_path
    target_file.read(), fname=fname, fix=fix, config=config
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/linter.py", line 939, in lint_string
    parsed = self.parse_string(in_str=in_str, fname=fname, config=config)
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/linter.py", line 723, in parse_string
    tokens, lex_vs = lexer.lex(templated_file)
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/parser/lexer.py", line 343, in lex
    return self.enrich_segments(segment_buff, raw), violations
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/parser/lexer.py", line 373, in enrich_segments
    templated_slice
  File "/Users/niallwoodward/dev/pull_requests/sqlfluff/src/sqlfluff/core/templaters/base.py", line 283, in templated_slice_to_source_slice
    elif start_slices[0][0] == "literal":
IndexError: list index out of range

Issue Analytics

State:
Created 3 years ago
Comments:9 (9 by maintainers)

Top GitHub Comments

1reaction

alanmcruickshankcommented, Jan 6, 2021

I think the comment I added to #603 about slicing and the missing bits is probably spot on in what’s causing this issue. The templating code wasn’t designed to deal with query wrapping like this because the bits aren’t in the source at all.

@NiallRees - want me to pick this up or are those pointers enough for you to have a go?

0reactions

NiallReescommented, Jan 11, 2021

Having just looked a bit further into the code - I think it will take me so long to get my head around it it might not be worth it as you wrote it relatively recently. I’ll keep my efforts focused where I can contribute more effectively for now - you ok to pick this one up?