Module lex

Lexical analyzer.

See the parent module’s documentation to learn how to use the lexer.

Structs

• Lexer
  Lexical analyzer.
• ParseKeywordError
  Error value indicating that a string is not a keyword
• ParseOperatorError
  Error value indicating that the input string is not a valid operator
• PlainLexer
  Reference to Lexer with line continuation disabled.
• Token
  Result of lexical analysis produced by the Lexer.
• TryFromOperatorError
  Error value indicating an operand conversion failure
• WordLexer
  Lexer with additional information for parsing texts and words.

Enums

• Keyword
  Token identifier for reserved words.
• Operator
  Operator token identifier.
• TokenId
  Token identifier, or classification of tokens.
• WordContext
  Context in which a word is parsed.

Functions

• is_blank
  Returns true if the character is a blank character.
• is_name_char
  Tests if a character can be part of a variable name.
• is_operator_char
  Tests whether the given character is the first character of an operator.
• is_portable_name_char
  Tests if a character can be part of a POSIXly-portable name.
• is_single_char_name
  Tests if a character is a valid single-character raw parameter.
• is_special_parameter_char
  Tests if a character names a special parameter.
• is_token_delimiter_char
  Tests whether the given character is a token delimiter.