Scanner
Object Hierarchy:
GLib.Scanner
GLib.Scanner
GLib.Scanner
Description:
[ Compact ]CCode ( free_function = "g_scanner_destroy" ) ]public class Scanner
`GScanner` provides a general-purpose lexical scanner.
You should set input_name after creating the scanner, since it is used by the default message handler when displaying warnings and
errors. If you are scanning a file, the filename would be a good choice.
The user_data and max_parse_errors fields are not used. If you need to associate extra data with the scanner you can
place them here.
If you want to use your own message handler you can set the msg_handler field. The type of the message handler function is
declared by ScannerMsgFunc .
Content:
Creation methods:
Methods:
public int cur_line Returns the current line in the input stream (counting from 1).
public int cur_position Returns the current position in the current line (counting from 0).
public TokenType cur_token Gets the current token type.
public TokenValue cur_value Gets the current token value.
public bool eof Returns true if the scanner has reached
the end of the file or text buffer.
public void error string Outputs an error message, via the Scanner message
handler.
public TokenType get_next_token Parses the next token just like
peek_next_token and also removes it from the input stream.
public void input_file int Prepares to scan a file.
public void input_text string uint Prepares to scan a text buffer.
public void * lookup_symbol string Looks up a symbol in the current scope and return its value.
public TokenType peek_next_token Parses the next token, without removing it from the input stream.
public void scope_add_symbol uint string void * value)
Adds a symbol to the given scope.
public void scope_foreach_symbol uint HFunc string void *> func)
Calls the given function for each of the symbol/value pairs in the given
scope of the Scanner .
public void * scope_lookup_symbol uint string Looks up a symbol in a scope and return its value.
public void scope_remove_symbol uint string Removes a symbol from a scope.
public uint set_scope uint Sets the current scope.
public void sync_file_offset Rewinds the filedescriptor to the current buffer position and blows the file
read ahead buffer.
public void unexp_token TokenType string string string string bool Outputs a message through the scanner's msg_handler, resulting from an
unexpected token in the input stream.
public void warn string Outputs a warning message, via the Scanner
message handler.
Fields: