PyLex/lexers/python.yaml at develop · dweng0/PyLex · GitHub

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lexer_target: python
version: 1.0.0
delimiters: " \t\n\r;(){}[]:.,+-*/%&|^~<>!=#@\\'\""
delimiter_check_for_types:
  - keyword
  - identifier
  - number
tokens:
  # **Comments** (Place before other tokens to prevent conflicts)
  - type: multi_line_comment
    pattern: "'''(.|\\n)*?'''"
  - type: multi_line_comment
    pattern: '"""(.|\\n)*?"""'
  - type: single_line_comment
    pattern: "#.*"

  # **Multi-line Strings (Triple Quotes)**
  # Placed after comments but before single-line strings
  # Already covered by multi_line_comment patterns; no need to repeat

  # **String Literals** (Place before operators and punctuators)
  - type: string_literal
    pattern: "'([^'\\\\]|\\\\.)*'"
  - type: string_literal
    pattern: '"([^"\\\\]|\\\\.)*"'

  # **Operators and Delimiters** (Multi-character before single-character)
  - type: operator
    value: "**="
  - type: operator
    value: "//="
  - type: operator
    value: ">>="
  - type: operator
    value: "<<="
  - type: operator
    value: "**"
  - type: operator
    value: "//"
  - type: operator
    value: ">>"
  - type: operator
    value: "<<"
  - type: operator
    value: "+="
  - type: operator
    value: "-="
  - type: operator
    value: "*="
  - type: operator
    value: "/="
  - type: operator
    value: "%="
  - type: operator
    value: "&="
  - type: operator
    value: "|="
  - type: operator
    value: "^="
  - type: operator
    value: "=="
  - type: operator
    value: "!="
  - type: operator
    value: "<="
  - type: operator
    value: ">="
  - type: operator
    value: "->"
  - type: operator
    value: "+"
  - type: operator
    value: "-"
  - type: operator
    value: "*"
  - type: operator
    value: "/"
  - type: operator
    value: "%"
  - type: operator
    value: "="
  - type: operator
    value: "<"
  - type: operator
    value: ">"
  - type: operator
    value: "~"
  - type: operator
    value: "^"
  - type: operator
    value: "|"
  - type: operator
    value: "&"
  - type: operator
    value: "@"
  - type: operator
    value: "!"
  - type: operator
    value: ":"

  # **Punctuators**
  - type: punctuator
    value: "("
  - type: punctuator
    value: ")"
  - type: punctuator
    value: "["
  - type: punctuator
    value: "]"
  - type: punctuator
    value: "{"
  - type: punctuator
    value: "}"
  - type: punctuator
    value: ","
  - type: punctuator
    value: "."
  - type: punctuator
    value: ";"

  # **Keywords** (Place before identifiers)
  - type: keyword
    value: "False"
  - type: keyword
    value: "None"
  - type: keyword
    value: "True"
  - type: keyword
    value: "and"
  - type: keyword
    value: "as"
  - type: keyword
    value: "assert"
  - type: keyword
    value: "async"
  - type: keyword
    value: "await"
  - type: keyword
    value: "break"
  - type: keyword
    value: "class"
  - type: keyword
    value: "continue"
  - type: keyword
    value: "def"
  - type: keyword
    value: "del"
  - type: keyword
    value: "elif"
  - type: keyword
    value: "else"
  - type: keyword
    value: "except"
  - type: keyword
    value: "finally"
  - type: keyword
    value: "for"
  - type: keyword
    value: "from"
  - type: keyword
    value: "global"
  - type: keyword
    value: "if"
  - type: keyword
    value: "import"
  - type: keyword
    value: "in"
  - type: keyword
    value: "is"
  - type: keyword
    value: "lambda"
  - type: keyword
    value: "nonlocal"
  - type: keyword
    value: "not"
  - type: keyword
    value: "or"
  - type: keyword
    value: "pass"
  - type: keyword
    value: "print"
  - type: keyword
    value: "raise"
  - type: keyword
    value: "return"
  - type: keyword
    value: "try"
  - type: keyword
    value: "while"
  - type: keyword
    value: "with"
  - type: keyword
    value: "yield"

  # **Identifiers**
  - type: identifier
    pattern: "[a-zA-Z_][a-zA-Z0-9_]*"

  # **Numeric Literals**
  # Floating-point numbers before integers
  - type: number
    pattern: "\\b\\d+\\.\\d*([eE][+-]?\\d+)?\\b"
  - type: number
    pattern: "\\b\\.\\d+([eE][+-]?\\d+)?\\b"
  - type: number
    pattern: "\\b\\d+([eE][+-]?\\d+)?\\b"
  # Hexadecimal, octal, and binary literals
  - type: number
    pattern: "\\b0[bB][01]+\\b"
  - type: number
    pattern: "\\b0[oO][0-7]+\\b"
  - type: number
    pattern: "\\b0[xX][0-9a-fA-F]+\\b"

  # **Whitespace and Newlines** (Place after tokens that can include whitespace)
  - type: whitespace
    pattern: "\\s+"

  # **Unknown Tokens** (Catch-all pattern for error handling)
  - type: unknown
    pattern: "."