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gmqcc/opts.c

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/*
* Copyright (C) 2012, 2013
* Wolfgang Bumiller
* Dale Weiler
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "gmqcc.h"
unsigned int opts_optimizationcount[COUNT_OPTIMIZATIONS];
opts_cmd_t opts; /* command lien options */
static void opts_setdefault() {
memset(&opts, 0, sizeof(opts_cmd_t));
/* warnings */
opts_set(opts.warn, WARN_UNUSED_VARIABLE, true);
opts_set(opts.warn, WARN_USED_UNINITIALIZED, true);
opts_set(opts.warn, WARN_UNKNOWN_CONTROL_SEQUENCE, true);
opts_set(opts.warn, WARN_EXTENSIONS, true);
opts_set(opts.warn, WARN_FIELD_REDECLARED, true);
opts_set(opts.warn, WARN_MISSING_RETURN_VALUES, true);
opts_set(opts.warn, WARN_INVALID_PARAMETER_COUNT, true);
opts_set(opts.warn, WARN_LOCAL_SHADOWS, false);
opts_set(opts.warn, WARN_LOCAL_CONSTANTS, true);
opts_set(opts.warn, WARN_VOID_VARIABLES, true);
opts_set(opts.warn, WARN_IMPLICIT_FUNCTION_POINTER, true);
opts_set(opts.warn, WARN_VARIADIC_FUNCTION, true);
opts_set(opts.warn, WARN_FRAME_MACROS, true);
opts_set(opts.warn, WARN_EFFECTLESS_STATEMENT, true);
opts_set(opts.warn, WARN_END_SYS_FIELDS, true);
opts_set(opts.warn, WARN_ASSIGN_FUNCTION_TYPES, true);
opts_set(opts.warn, WARN_PREPROCESSOR, true);
opts_set(opts.warn, WARN_MULTIFILE_IF, true);
opts_set(opts.warn, WARN_DOUBLE_DECLARATION, true);
opts_set(opts.warn, WARN_CONST_VAR, true);
opts_set(opts.warn, WARN_MULTIBYTE_CHARACTER, true);
opts_set(opts.warn, WARN_UNKNOWN_PRAGMAS, true);
opts_set(opts.warn, WARN_UNREACHABLE_CODE, true);
opts_set(opts.warn, WARN_CPP, true);
opts_set(opts.warn, WARN_UNKNOWN_ATTRIBUTE, true);
opts_set(opts.warn, WARN_RESERVED_NAMES, true);
opts_set(opts.warn, WARN_UNINITIALIZED_CONSTANT, true);
opts_set(opts.warn, WARN_UNINITIALIZED_GLOBAL, false);
opts_set(opts.warn, WARN_DEPRECATED, true);
opts_set(opts.warn, WARN_PARENTHESIS, true);
/* flags */
opts_set(opts.flags, ADJUST_VECTOR_FIELDS, true);
opts_set(opts.flags, FTEPP, false);
opts_set(opts.flags, FTEPP_PREDEFS, false);
opts_set(opts.flags, CORRECT_TERNARY, true);
opts_set(opts.flags, BAIL_ON_WERROR, true);
opts_set(opts.flags, ENHANCED_DIAGNOSTICS, true);
}
void opts_init(const char *output, int standard, size_t arraysize) {
opts_setdefault();
opts.output = output;
opts.standard = (opts_std_t)standard; /* C++ ... y u no like me? */
opts.max_array_size = arraysize;
}
static bool opts_setflag_all(const char *name, bool on, uint32_t *flags, const opts_flag_def *list, size_t listsize) {
size_t i;
for (i = 0; i < listsize; ++i) {
if (!strcmp(name, list[i].name)) {
longbit lb = list[i].bit;
#if 1
if (on)
flags[lb.idx] |= (1<<(lb.bit));
else
flags[lb.idx] &= ~(1<<(lb.bit));
#else
if (on)
flags[0] |= (1<<lb);
else
flags[0] &= ~(1<<(lb));
#endif
return true;
}
}
return false;
}
bool opts_setflag (const char *name, bool on) {
return opts_setflag_all(name, on, opts.flags, opts_flag_list, COUNT_FLAGS);
}
bool opts_setwarn (const char *name, bool on) {
return opts_setflag_all(name, on, opts.warn, opts_warn_list, COUNT_WARNINGS);
}
bool opts_setwerror(const char *name, bool on) {
return opts_setflag_all(name, on, opts.werror, opts_warn_list, COUNT_WARNINGS);
}
bool opts_setoptim (const char *name, bool on) {
return opts_setflag_all(name, on, opts.optimization, opts_opt_list, COUNT_OPTIMIZATIONS);
}
void opts_set(uint32_t *flags, size_t idx, bool on) {
longbit lb;
LONGBIT_SET(lb, idx);
#if 1
if (on)
flags[lb.idx] |= (1<<(lb.bit));
else
flags[lb.idx] &= ~(1<<(lb.bit));
#else
if (on)
flags[0] |= (1<<(lb));
else
flags[0] &= ~(1<<(lb));
#endif
}
void opts_setoptimlevel(unsigned int level) {
size_t i;
for (i = 0; i < COUNT_OPTIMIZATIONS; ++i)
opts_set(opts.optimization, i, level >= opts_opt_oflag[i]);
}
/*
* Standard configuration parser and subsystem. Yes, optionally you may
* create ini files or cfg (the driver accepts both) for a project opposed
* to supplying just a progs.src (since you also may need to supply command
* line arguments or set the options of the compiler) [which cannot be done
* from a progs.src.
*/
static char *opts_ini_rstrip(char *s) {
char *p = s + strlen(s);
while(p > s && isspace(*--p))
*p = '\0';
return s;
}
static char *opts_ini_lskip(const char *s) {
while (*s && isspace(*s))
s++;
return (char*)s;
}
static char *opts_ini_next(const char *s, char c) {
bool last = false;
while (*s && *s != c && !(last && *s == ';'))
last = !!isspace(*s), s++;
return (char*)s;
}
static size_t opts_ini_parse (
FILE *filehandle,
char *(*loadhandle)(const char *, const char *, const char *),
char **errorhandle
) {
size_t linesize;
size_t lineno = 1;
size_t error = 0;
char *line = NULL;
char section_data[2048] = "";
char oldname_data[2048] = "";
/* parsing and reading variables */
char *parse_beg;
char *parse_end;
char *read_name;
char *read_value;
while (file_getline(&line, &linesize, filehandle) != EOF) {
parse_beg = line;
/* handle BOM */
if (lineno == 1 && (
(unsigned char)parse_beg[0] == 0xEF &&
(unsigned char)parse_beg[1] == 0xBB &&
(unsigned char)parse_beg[2] == 0xBF
)
) {
parse_beg ++; /* 0xEF */
parse_beg ++; /* 0xBB */
parse_beg ++; /* 0xBF */
}
if (*(parse_beg = opts_ini_lskip(opts_ini_rstrip(parse_beg))) == ';' || *parse_beg == '#') {
/* ignore '#' is a perl extension */
} else if (*parse_beg == '[') {
/* section found */
if (*(parse_end = opts_ini_next(parse_beg + 1, ']')) == ']') {
* parse_end = '\0'; /* terminate bro */
strncpy(section_data, parse_beg + 1, sizeof(section_data));
section_data[sizeof(section_data) - 1] = '\0';
*oldname_data = '\0';
} else if (!error) {
/* otherwise set error to the current line number */
error = lineno;
}
} else if (*parse_beg && *parse_beg != ';') {
/* not a comment, must be a name value pair :) */
if (*(parse_end = opts_ini_next(parse_beg, '=')) != '=')
parse_end = opts_ini_next(parse_beg, ':');
if (*parse_end == '=' || *parse_end == ':') {
*parse_end = '\0'; /* terminate bro */
read_name = opts_ini_rstrip(parse_beg);
read_value = opts_ini_lskip(parse_end + 1);
if (*(parse_end = opts_ini_next(read_value, '\0')) == ';')
* parse_end = '\0';
opts_ini_rstrip(read_value);
/* valid name value pair, lets call down to handler */
strncpy(oldname_data, read_name, sizeof(oldname_data));
oldname_data[sizeof(oldname_data) - 1] ='\0';
if ((*errorhandle = loadhandle(section_data, read_name, read_value)) && !error)
error = lineno;
} else if (!error) {
/* otherwise set error to the current line number */
error = lineno;
}
}
lineno++;
}
mem_d(line);
return error;
}
/*
* returns true/false for a char that contains ("true" or "false" or numeric 0/1)
*/
static bool opts_ini_bool(const char *value) {
if (!strcmp(value, "true")) return true;
if (!strcmp(value, "false")) return false;
return !!atoi(value);
}
static char *opts_ini_load(const char *section, const char *name, const char *value) {
char *error = NULL;
bool found = false;
/*
* undef all of these because they may still be defined like in my
* case they where.
*/
#undef GMQCC_TYPE_FLAGS
#undef GMQCC_TYPE_OPTIMIZATIONS
#undef GMQCC_TYPE_WARNS
/* flags */
#define GMQCC_TYPE_FLAGS
#define GMQCC_DEFINE_FLAG(X) \
if (!strcmp(section, "flags") && !strcmp(name, #X)) { \
opts_set(opts.flags, X, opts_ini_bool(value)); \
found = true; \
}
#include "opts.def"
/* warnings */
#define GMQCC_TYPE_WARNS
#define GMQCC_DEFINE_FLAG(X) \
if (!strcmp(section, "warnings") && !strcmp(name, #X)) { \
opts_set(opts.warn, WARN_##X, opts_ini_bool(value)); \
found = true; \
}
#include "opts.def"
/* Werror-individuals */
#define GMQCC_TYPE_WARNS
#define GMQCC_DEFINE_FLAG(X) \
if (!strcmp(section, "errors") && !strcmp(name, #X)) { \
opts_set(opts.werror, WARN_##X, opts_ini_bool(value)); \
found = true; \
}
#include "opts.def"
/* optimizations */
#define GMQCC_TYPE_OPTIMIZATIONS
#define GMQCC_DEFINE_FLAG(X,Y) \
if (!strcmp(section, "optimizations") && !strcmp(name, #X)) { \
opts_set(opts.optimization, OPTIM_##X, opts_ini_bool(value)); \
found = true; \
}
#include "opts.def"
/* nothing was found ever! */
if (!found) {
if (strcmp(section, "flags") &&
strcmp(section, "warnings") &&
strcmp(section, "optimizations"))
{
vec_upload(error, "invalid section `", 17);
vec_upload(error, section, strlen(section));
vec_push (error, '`');
vec_push (error, '\0');
} else {
vec_upload(error, "invalid variable `", 18);
vec_upload(error, name, strlen(name));
vec_push (error, '`');
vec_upload(error, " in section: `", 14);
vec_upload(error, section, strlen(section));
vec_push (error, '`');
vec_push (error, '\0');
}
}
return error;
}
/*
* Actual loading subsystem, this finds the ini or cfg file, and properly
* loads it and executes it to set compiler options.
*/
void opts_ini_init(const char *file) {
/*
* Possible matches are:
* gmqcc.ini
* gmqcc.cfg
*/
char *error;
size_t line;
FILE *ini;
if (!file) {
/* try ini */
if (!(ini = file_open((file = "gmqcc.ini"), "r")))
/* try cfg */
if (!(ini = file_open((file = "gmqcc.cfg"), "r")))
return;
} else if (!(ini = file_open(file, "r")))
return;
con_out("found ini file `%s`\n", file);
if ((line = opts_ini_parse(ini, &opts_ini_load, &error)) != 0) {
/* there was a parse error with the ini file */
con_printmsg(LVL_ERROR, file, line, "error", error);
vec_free(error);
}
file_close(ini);
}
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