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// Copyright (C) 2010-2016 Joel Rosdahl
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include "ccache.h"
#include "compopt.h"
#define TOO_HARD (1 << 0)
#define TOO_HARD_DIRECT (1 << 1)
#define TAKES_ARG (1 << 2)
#define TAKES_CONCAT_ARG (1 << 3)
#define TAKES_PATH (1 << 4)
#define AFFECTS_CPP (1 << 5)
struct compopt {
const char *name;
int type;
};
static const struct compopt compopts[] = {
{"--param", TAKES_ARG},
{"--save-temps", TOO_HARD},
{"--serialize-diagnostics", TAKES_ARG | TAKES_PATH},
{"-A", TAKES_ARG},
{"-B", TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-D", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG},
{"-E", TOO_HARD},
{"-F", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-G", TAKES_ARG},
{"-I", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-L", TAKES_ARG},
{"-M", TOO_HARD},
{"-MF", TAKES_ARG},
{"-MM", TOO_HARD},
{"-MQ", TAKES_ARG},
{"-MT", TAKES_ARG},
{"-P", TOO_HARD},
{"-U", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG},
{"-V", TAKES_ARG},
{"-Xassembler", TAKES_ARG},
{"-Xclang", TAKES_ARG},
{"-Xlinker", TAKES_ARG},
{"-Xpreprocessor", AFFECTS_CPP | TOO_HARD_DIRECT | TAKES_ARG},
{"-arch", TAKES_ARG},
{"-aux-info", TAKES_ARG},
{"-b", TAKES_ARG},
{"-fmodules", TOO_HARD},
{"-fno-working-directory", AFFECTS_CPP},
{"-fplugin=libcc1plugin", TOO_HARD}, // interaction with GDB
{"-frepo", TOO_HARD},
{"-fstack-usage", TOO_HARD},
{"-fworking-directory", AFFECTS_CPP},
{"-idirafter", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-iframework", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-imacros", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-imultilib", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-include", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-include-pch", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-install_name", TAKES_ARG}, // Darwin linker option
{"-iprefix", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-iquote", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-isysroot", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-isystem", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-iwithprefix", AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-iwithprefixbefore",
AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
{"-nostdinc", AFFECTS_CPP},
{"-nostdinc++", AFFECTS_CPP},
{"-remap", AFFECTS_CPP},
{"-save-temps", TOO_HARD},
{"-stdlib=", AFFECTS_CPP | TAKES_CONCAT_ARG},
{"-trigraphs", AFFECTS_CPP},
{"-u", TAKES_ARG | TAKES_CONCAT_ARG},
};
static int
compare_compopts(const void *key1, const void *key2)
{
const struct compopt *opt1 = (const struct compopt *)key1;
const struct compopt *opt2 = (const struct compopt *)key2;
return strcmp(opt1->name, opt2->name);
}
static int
compare_prefix_compopts(const void *key1, const void *key2)
{
const struct compopt *opt1 = (const struct compopt *)key1;
const struct compopt *opt2 = (const struct compopt *)key2;
return strncmp(opt1->name, opt2->name, strlen(opt2->name));
}
static const struct compopt *
find(const char *option)
{
struct compopt key;
key.name = option;
return bsearch(
&key, compopts, sizeof(compopts) / sizeof(compopts[0]),
sizeof(compopts[0]), compare_compopts);
}
static const struct compopt *
find_prefix(const char *option)
{
struct compopt key;
key.name = option;
return bsearch(
&key, compopts, sizeof(compopts) / sizeof(compopts[0]),
sizeof(compopts[0]), compare_prefix_compopts);
}
// Runs fn on the first two characters of option.
bool
compopt_short(bool (*fn)(const char *), const char *option)
{
char *short_opt = x_strndup(option, 2);
bool retval = fn(short_opt);
free(short_opt);
return retval;
}
// For test purposes.
bool
compopt_verify_sortedness(void)
{
for (size_t i = 1; i < sizeof(compopts)/sizeof(compopts[0]); i++) {
if (strcmp(compopts[i-1].name, compopts[i].name) >= 0) {
fprintf(stderr,
"compopt_verify_sortedness: %s >= %s\n",
compopts[i-1].name,
compopts[i].name);
return false;
}
}
return true;
}
bool
compopt_affects_cpp(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & AFFECTS_CPP);
}
bool
compopt_too_hard(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & TOO_HARD);
}
bool
compopt_too_hard_for_direct_mode(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & TOO_HARD_DIRECT);
}
bool
compopt_takes_path(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & TAKES_PATH);
}
bool
compopt_takes_arg(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & TAKES_ARG);
}
bool
compopt_takes_concat_arg(const char *option)
{
const struct compopt *co = find(option);
return co && (co->type & TAKES_CONCAT_ARG);
}
// Determines if the prefix of the option matches any option and affects the
// preprocessor.
bool
compopt_prefix_affects_cpp(const char *option)
{
// Prefix options have to take concatentated args.
const struct compopt *co = find_prefix(option);
return co && (co->type & TAKES_CONCAT_ARG) && (co->type & AFFECTS_CPP);
}
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