diff options
Diffstat (limited to 'parse.c')
| -rw-r--r-- | parse.c | 127 |
1 files changed, 81 insertions, 46 deletions
@@ -1,6 +1,6 @@ /**************************************************************************** * bfs * - * Copyright (C) 2015-2018 Tavian Barnes <tavianator@tavianator.com> * + * Copyright (C) 2015-2019 Tavian Barnes <tavianator@tavianator.com> * * * * Permission to use, copy, modify, and/or distribute this software for any * * purpose with or without fee is hereby granted. * @@ -851,6 +851,34 @@ static void debug_help(CFILE *cfile) { cfprintf(cfile, " ${bld}all${rs}: All debug flags at once.\n"); } +/** A named debug flag. */ +struct debug_flag { + enum debug_flags flag; + const char *name; +}; + +/** The table of debug flags. */ +struct debug_flag debug_flags[] = { + {DEBUG_ALL, "all"}, + {DEBUG_COST, "cost"}, + {DEBUG_EXEC, "exec"}, + {DEBUG_OPT, "opt"}, + {DEBUG_RATES, "rates"}, + {DEBUG_SEARCH, "search"}, + {DEBUG_STAT, "stat"}, + {DEBUG_TREE, "tree"}, + {0}, +}; + +/** Check if a substring matches a debug flag. */ +static bool parse_debug_flag(const char *flag, size_t len, const char *expected) { + if (len == strlen(expected)) { + return strncmp(flag, expected, len) == 0; + } else { + return false; + } +} + /** * Parse -D FLAG. */ @@ -858,35 +886,47 @@ static struct expr *parse_debug(struct parser_state *state, int arg1, int arg2) struct cmdline *cmdline = state->cmdline; const char *arg = state->argv[0]; - const char *flag = state->argv[1]; - if (!flag) { - parse_error(state, " %s needs a flag.\n\n", arg); + const char *flags = state->argv[1]; + if (!flags) { + parse_error(state, "%s needs a flag.\n\n", arg); debug_help(cmdline->cerr); return NULL; } - if (strcmp(flag, "help") == 0) { - debug_help(cmdline->cout); - state->just_info = true; - return NULL; - } else if (strcmp(flag, "cost") == 0) { - cmdline->debug |= DEBUG_COST; - } else if (strcmp(flag, "exec") == 0) { - cmdline->debug |= DEBUG_EXEC; - } else if (strcmp(flag, "opt") == 0) { - cmdline->debug |= DEBUG_OPT; - } else if (strcmp(flag, "rates") == 0) { - cmdline->debug |= DEBUG_RATES; - } else if (strcmp(flag, "search") == 0) { - cmdline->debug |= DEBUG_SEARCH; - } else if (strcmp(flag, "stat") == 0) { - cmdline->debug |= DEBUG_STAT; - } else if (strcmp(flag, "tree") == 0) { - cmdline->debug |= DEBUG_TREE; - } else if (strcmp(flag, "all") == 0) { - cmdline->debug |= DEBUG_ALL; - } else { - parse_warning(state, "Unrecognized debug flag '%s'.\n\n", flag); + bool unrecognized = false; + + for (const char *flag = flags, *next; flag; flag = next) { + size_t len = strcspn(flag, ","); + if (flag[len]) { + next = flag + len + 1; + } else { + next = NULL; + } + + if (parse_debug_flag(flag, len, "help")) { + debug_help(cmdline->cout); + state->just_info = true; + return NULL; + } + + for (int i = 0; ; ++i) { + const char *expected = debug_flags[i].name; + if (!expected) { + parse_warning(state, "Unrecognized debug flag '"); + fwrite(flag, 1, len, stderr); + fputs("'\n\n", stderr); + unrecognized = true; + break; + } + + if (parse_debug_flag(flag, len, expected)) { + cmdline->debug |= debug_flags[i].flag; + break; + } + } + } + + if (unrecognized) { debug_help(cmdline->cerr); cfprintf(cmdline->cerr, "\n"); } @@ -3004,26 +3044,21 @@ void dump_cmdline(const struct cmdline *cmdline, bool verbose) { cfprintf(cerr, "${cyn}-O%d${rs} ", cmdline->optlevel); } - if (cmdline->debug & DEBUG_COST) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}cost${rs} "); - } - if (cmdline->debug & DEBUG_EXEC) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}exec${rs} "); - } - if (cmdline->debug & DEBUG_OPT) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}opt${rs} "); - } - if (cmdline->debug & DEBUG_RATES) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}rates${rs} "); - } - if (cmdline->debug & DEBUG_SEARCH) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}search${rs} "); - } - if (cmdline->debug & DEBUG_STAT) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}stat${rs} "); - } - if (cmdline->debug & DEBUG_TREE) { - cfprintf(cerr, "${cyn}-D${rs} ${bld}tree${rs} "); + enum debug_flags debug = cmdline->debug; + if (debug) { + cfprintf(cerr, "${cyn}-D${rs} "); + for (int i = 0; debug; ++i) { + enum debug_flags flag = debug_flags[i].flag; + const char *name = debug_flags[i].name; + if ((debug & flag) == flag) { + cfprintf(cerr, "${bld}%s${rs}", name); + debug ^= flag; + if (debug) { + cfprintf(cerr, ","); + } + } + } + cfprintf(cerr, " "); } for (struct root *root = cmdline->roots; root; root = root->next) { |