diff options
Diffstat (limited to 'src/libs/libdriver/input.cc')
| -rw-r--r-- | src/libs/libdriver/input.cc | 26 |
1 files changed, 9 insertions, 17 deletions
diff --git a/src/libs/libdriver/input.cc b/src/libs/libdriver/input.cc index bc9b7f57..abe2e20e 100644 --- a/src/libs/libdriver/input.cc +++ b/src/libs/libdriver/input.cc @@ -8,7 +8,7 @@ Written by James Clark (jjc@jclark.com) Major rewrite 2001 by Bernd Warken (bwarken@mayn.de) - Last update: 11 Mar 2003 + Last update: 04 Apr 2003 This file is part of groff, the GNU roff text processing system. @@ -33,18 +33,14 @@ This file implements the parser for the intermediate groff output, see groff_out(5), and does the printout for the given device. - All parsed information is processed within the function do_file() by - using the global object `pr' of class `printer'. So a device - postprocessor just needs to fill in the methods for the class - `printer' without having to worry about the syntax of the - intermediate output format. Consequently, the programming of groff - postprocessors is similar to the development of device-drivers. + All parsed information is processed within the function do_file(). + A device postprocessor just needs to fill in the methods for the class + `printer' (or rather a derived class) without having to worry about + the syntax of the intermediate output format. Consequently, the + programming of groff postprocessors is similar to the development of + device drivers. The prototyping for this file is done in driver.h (and error.h). - - Postprocessor programs must deallocate the global variables `pr' and - `device' with `delete', `current_filename' and - `current_source_filename' with `free((char *))'. */ /* Changes of the 2001 rewrite of this file. @@ -148,10 +144,6 @@ devices to the postprocessor device (seems to be reasonably easy). - The external, global pointer variables are not optimally handled. - - `pr' isn't used outside besides initialization and deletion. - So it could be replaced by a static local variable. For - example, a wrapper class `Postprocessor' for class `printer' with - internal make_printer() and automatic clean-up would make sense. - The global variables `current_filename', `current_source_filename', and `current_lineno' are only used for error reporting. So implement a static class `Error' @@ -284,11 +276,11 @@ public: { if (i >= num_stored) fatal("index out of range"); - return (const IntArg) data[i]; + return (IntArg) data[i]; } void append(IntArg); const IntArg * const - get_data(void) const { return (const IntArg * const) data; } + get_data(void) const { return (IntArg *) data; } const size_t len(void) const { return num_stored; } }; |