5.1 Constants

Propane generates the following result code constants:

• P_SUCCESS: A successful decode/lex/parse operation has taken place.
• P_DECODE_ERROR: An error occurred when decoding UTF-8 input.
• P_UNEXPECTED_INPUT: Input was received by the lexer that does not match any lexer pattern.
• P_UNEXPECTED_TOKEN: A token was seen in a location that does not match any parser rule.
• P_DROP: The lexer matched a drop pattern.
• P_EOF: The lexer reached the end of the input string.
• P_USER_TERMINATED: A parser user code block has requested to terminate the parser.

Result codes are returned by the API functions p_decode_code_point(), p_lex(), and p_parse().