Module validator

Helpers for validating pest grammars that could help with debugging and provide a more user-friendly error message.

Functions

• validate_already_defined
  Validates that the given definitions do not contain any duplicate rules.
• validate_ast
  Validates the abstract syntax tree for common mistakes:
• validate_pairs
  It checks the parsed grammar for common mistakes:
• validate_pest_keywords
  Validates that the given definitions do not contain any Pest keywords.
• validate_rust_keywordsDeprecated
  Validates that the given definitions do not contain any Rust keywords.
• validate_undefined
  Validates that the given definitions do not contain any undefined rules.