Two grammars are not equal if their elements or types are not equal. NOTE: This is to handle some conflicts with dunder methods in mypyc.

Override new operator.

Override new operator.

Override new operator.

Construct a string-like placeholder for mocked dbt `var()` output.

Do some lightweight validation post instantiation.

Handle setup for RegexLexer.

Prepare the SQLBaseError for pickling.

Prepare the SQLParseError for pickling.

Prepare the SQLLintError for pickling.

Compressed repr method to ease logging.

Return a string representation of the TypedParser object.

Return a string representation suitable for debugging.

Return a string representation of the 'Ref' object.

Return a string representation of the 'TemplatedFile' object.

Set state during process of unpickling.

Return a string representation of the object.

Return the templated file if coerced to string.

Treat undefined vars as empty, but remember for later.

If we try and render the wrapper directly, throw an error.

Return a boolean value. Args: *args: Variable length argument list. **kwargs: Arbitrary keyword arguments. R

The indices of code elements. This is used in the path_to algorithm for tree traversal.

Returns only the comment elements of this segment.

Fetches the installed dbt version. This is cached in the raw dbt format. NOTE: We do this only on demand to reduce the amount of loa

Test that specific segments do not match. NB: We're testing the MATCH function not the PARSE function. This is the opposite to the above.

Test that specific segments parse as expected. NB: We're testing the PARSE function not the MATCH function although this will be a recursive

Stars make newlines.

Stars make newlines.

Triple any numeric literals.

Files must not begin with newlines or whitespace.

There should be a maximum number of empty lines.

Function name not immediately followed by bracket. Look for Function Segment with anything other than the function name before bracke

Set operators should be surrounded by newlines. For any set operator we check if there is any NewLineSegment in the non-code segments

Unnecessary whitespace.

Keyword clauses should begin on a newline.

Select clause modifiers must appear on same line as SELECT.

Blank line expected but not found after CTE definition.

Files must end with a single trailing newline. We only care about the segment and the siblings which come after it for this rule, we

WITH clause closing bracket should be aligned with WITH keyword. Look for a with clause and evaluate the position of closing brackets.

Operators should follow a standard for being before/after newlines. For the fixing routines we delegate to the reflow utils. However

Enforce comma placement. For the fixing routines we delegate to the reflow utils. However for performance reasons we have some initia

Line is too long.

Indentation not consistent with previous lines. To set the default tab size, set the `tab_space_size` value in the appropriate config

Check that derived tables have an alias.

Identify aliases in from clause and join conditions. Find base table, table expressions in join, and other expressions in select clau

Identify aliases in from clause and join conditions. Find base table, table expressions in join, and other expressions in select clau

Find self-aliased columns and fix them. Checks the alias in the `SELECT` clause and see if the alias identifier is same as the column

Get References and Aliases and allow linting. This rule covers a lot of potential cases of odd usages of references, see the code for

Walk through select clauses, looking for matching identifiers.

Column expression without alias. Use explicit `AS` clause. We look for the select_clause_element segment, and then evaluate whether i

Implicit aliasing of table/column not allowed. Use explicit `AS` clause. We look for the alias segment, and then evaluate its parent and whet

Remove empty batches.

Look for non-literal segments. NOTE: The existing crawlers don't filter very well for only templated code, and so we process the whol

Find rule violations and provide fixes. 0. Look for a case expression 1. Look for "ELSE" 2. Mark "ELSE" for deletion (populat

Looking for DISTINCT before a bracket. Look for DISTINCT keyword immediately followed by open parenthesis.

Detect consecutive semicolons and provide fixes. Operates at the file root, builds a cached bounded prefix of non-whitespace characte

Nested CASE statement in ELSE clause could be flattened.

Implement the logic to detect unused tables in joins. First we fetch all the tables brought *into* the query via either FROM or JOIN

Unnecessary CASE statement.

Find rule violations and provide fixes. 0. Grab all table aliases into a table_aliases list. 1. Grab all conditions from the differen