Module utils 

Functions

check_capitalisation

Check capitalisation of a token and return a violation if it doesn’t match. Shared by CP01, CP04, CP05 to avoid duplicating violation creation.

extract_alias_name

Extract the alias name from an AliasExpression. The alias name is the last Identifier or QuotedIdentifier before any non-trivia, non-keyword segment (scanning from the end).

find_keyword_in_children

Find a keyword by case-insensitive name in children. Returns (index, segment).

first_non_trivia

Return the first non-trivia child segment.

has_as_keyword

Check if an AliasExpression’s children contain an explicit AS keyword.

has_trailing_newline

Check if a segment ends with a Newline (possibly preceded by Whitespace). Used by layout rules (LT07, LT14) to detect newlines absorbed into clause bodies.

insert_as_keyword_fix

Generate a fix that inserts “AS “ before the last non-trivia child (the alias name). Used by AL01 and AL02.

is_false_alias

Check if the “alias name” in an AliasExpression is actually a misidentified SQL keyword (e.g. OVER in window functions). Returns true if the alias looks like a false positive.

is_in_table_context

Check if the current rule context is a table alias (parent is FROM or JOIN clause).

last_non_trivia

Return the last non-trivia child segment.