set_input_from_file

Reads the file at file_path and lexes it. Returns false if it cannot be read. The lexer frees the text when it is given new input.

set_input_from_file :: (lexer: *J.Lexer, file_path: string) -> bool

lexer: Lexer;
assert(!set_input_from_file(*lexer, "no/such/file.jai"));