bool newline;
unsigned int errors;
+ bool output_on;
ppcondition *conditions;
ppmacro **macros;
+
+ char *output_string;
+
+ char *itemname;
} ftepp_t;
#define ftepp_tokval(f) ((f)->lex->tok.value)
va_end(ap);
}
+static bool GMQCC_WARN ftepp_warn(ftepp_t *ftepp, int warntype, const char *fmt, ...)
+{
+ va_list ap;
+ int lvl = LVL_WARNING;
+
+ if (!OPTS_WARN(warntype))
+ return false;
+
+ if (opts_werror) {
+ lvl = LVL_ERROR;
+ ftepp->errors++;
+ }
+
+ va_start(ap, fmt);
+ con_vprintmsg(lvl, ftepp->lex->tok.ctx.file, ftepp->lex->tok.ctx.line, "error", fmt, ap);
+ va_end(ap);
+ return opts_werror;
+}
+
static pptoken *pptoken_make(ftepp_t *ftepp)
{
pptoken *token = (pptoken*)mem_a(sizeof(pptoken));
token->token = ftepp->token;
+#if 0
if (token->token == TOKEN_WHITE)
token->value = util_strdup(" ");
else
+#else
token->value = util_strdup(ftepp_tokval(ftepp));
+#endif
memcpy(&token->constval, &ftepp->lex->tok.constval, sizeof(token->constval));
return token;
}
mem_d(self);
}
-static ftepp_t* ftepp_init()
+static ftepp_t* ftepp_new()
{
ftepp_t *ftepp;
ftepp = (ftepp_t*)mem_a(sizeof(*ftepp));
memset(ftepp, 0, sizeof(*ftepp));
+ ftepp->output_on = true;
+
return ftepp;
}
static void ftepp_delete(ftepp_t *self)
{
size_t i;
+ if (self->itemname)
+ mem_d(self->itemname);
for (i = 0; i < vec_size(self->macros); ++i)
ppmacro_delete(self->macros[i]);
vec_free(self->macros);
vec_free(self->conditions);
- lex_close(self->lex);
+ if (self->lex)
+ lex_close(self->lex);
mem_d(self);
}
static void ftepp_out(ftepp_t *ftepp, const char *str, bool ignore_cond)
{
- if (ignore_cond ||
- !vec_size(ftepp->conditions) ||
- vec_last(ftepp->conditions).on)
+ if (ignore_cond || ftepp->output_on)
{
- printf("%s", str);
+ size_t len;
+ char *data;
+ len = strlen(str);
+ data = vec_add(ftepp->output_string, len);
+ memcpy(data, str, len);
}
}
-ppmacro* ftepp_macro_find(ftepp_t *ftepp, const char *name)
+static void ftepp_update_output_condition(ftepp_t *ftepp)
+{
+ size_t i;
+ ftepp->output_on = true;
+ for (i = 0; i < vec_size(ftepp->conditions); ++i)
+ ftepp->output_on = ftepp->output_on && ftepp->conditions[i].on;
+}
+
+static ppmacro* ftepp_macro_find(ftepp_t *ftepp, const char *name)
{
size_t i;
for (i = 0; i < vec_size(ftepp->macros); ++i) {
return NULL;
}
+static void ftepp_macro_delete(ftepp_t *ftepp, const char *name)
+{
+ size_t i;
+ for (i = 0; i < vec_size(ftepp->macros); ++i) {
+ if (!strcmp(name, ftepp->macros[i]->name)) {
+ vec_remove(ftepp->macros, i, 1);
+ return;
+ }
+ }
+}
+
static inline int ftepp_next(ftepp_t *ftepp)
{
return (ftepp->token = lex_do(ftepp->lex));
vec_push(macro->output, ptok);
ftepp_next(ftepp);
}
- if (ftepp->token != TOKEN_EOL) {
+ /* recursive expansion can cause EOFs here */
+ if (ftepp->token != TOKEN_EOL && ftepp->token != TOKEN_EOF) {
ftepp_error(ftepp, "unexpected junk after macro or unexpected end of file");
return false;
}
case TOKEN_IDENT:
case TOKEN_TYPENAME:
case TOKEN_KEYWORD:
+ macro = ftepp_macro_find(ftepp, ftepp_tokval(ftepp));
+ if (macro && ftepp->output_on) {
+ if (ftepp_warn(ftepp, WARN_PREPROCESSOR, "redefining `%s`", ftepp_tokval(ftepp)))
+ return false;
+ ftepp_macro_delete(ftepp, ftepp_tokval(ftepp));
+ }
macro = ppmacro_new(ftepp_ctx(ftepp), ftepp_tokval(ftepp));
break;
default:
if (!ftepp_define_body(ftepp, macro))
return false;
- vec_push(ftepp->macros, macro);
+ if (ftepp->output_on)
+ vec_push(ftepp->macros, macro);
+ else {
+ ppmacro_delete(macro);
+ }
return true;
}
vec_free(self->tokens);
}
+/* need to leave the last token up */
static bool ftepp_macro_call_params(ftepp_t *ftepp, macroparam **out_params)
{
macroparam *params = NULL;
size_t parens = 0;
size_t i;
+ if (!ftepp_skipallwhite(ftepp))
+ return false;
while (ftepp->token != ')') {
mp.tokens = NULL;
+ if (!ftepp_skipallwhite(ftepp))
+ return false;
while (parens || ftepp->token != ',') {
if (ftepp->token == '(')
++parens;
goto on_error;
}
}
+ /* need to leave that up
if (ftepp_next(ftepp) >= TOKEN_EOF) {
ftepp_error(ftepp, "unexpected EOF in macro call");
goto on_error;
}
+ */
*out_params = params;
return true;
return false;
}
+static bool macro_params_find(ppmacro *macro, const char *name, size_t *idx)
+{
+ size_t i;
+ for (i = 0; i < vec_size(macro->params); ++i) {
+ if (!strcmp(macro->params[i], name)) {
+ *idx = i;
+ return true;
+ }
+ }
+ return false;
+}
+
+static void ftepp_stringify_token(ftepp_t *ftepp, pptoken *token)
+{
+ char chs[2];
+ const char *ch;
+ chs[1] = 0;
+ switch (token->token) {
+ case TOKEN_STRINGCONST:
+ ch = token->value;
+ while (*ch) {
+ /* in preprocessor mode strings already are string,
+ * so we don't get actual newline bytes here.
+ * Still need to escape backslashes and quotes.
+ */
+ switch (*ch) {
+ case '\\': ftepp_out(ftepp, "\\\\", false); break;
+ case '"': ftepp_out(ftepp, "\\\"", false); break;
+ default:
+ chs[0] = *ch;
+ ftepp_out(ftepp, chs, false);
+ break;
+ }
+ ++ch;
+ }
+ break;
+ case TOKEN_WHITE:
+ ftepp_out(ftepp, " ", false);
+ break;
+ case TOKEN_EOL:
+ ftepp_out(ftepp, "\\n", false);
+ break;
+ default:
+ ftepp_out(ftepp, token->value, false);
+ break;
+ }
+}
+
+static void ftepp_stringify(ftepp_t *ftepp, macroparam *param)
+{
+ size_t i;
+ ftepp_out(ftepp, "\"", false);
+ for (i = 0; i < vec_size(param->tokens); ++i)
+ ftepp_stringify_token(ftepp, param->tokens[i]);
+ ftepp_out(ftepp, "\"", false);
+}
+
+static void ftepp_recursion_header(ftepp_t *ftepp)
+{
+ ftepp_out(ftepp, "\n#pragma push(line)\n", false);
+}
+
+static void ftepp_recursion_footer(ftepp_t *ftepp)
+{
+ ftepp_out(ftepp, "\n#pragma pop(line)\n", false);
+}
+
+static bool ftepp_preprocess(ftepp_t *ftepp);
+static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *params)
+{
+ char *old_string = ftepp->output_string;
+ lex_file *old_lexer = ftepp->lex;
+ bool retval = true;
+
+ size_t o, pi, pv;
+ lex_file *inlex;
+
+ int nextok;
+
+ /* really ... */
+ if (!vec_size(macro->output))
+ return true;
+
+ ftepp->output_string = NULL;
+ for (o = 0; o < vec_size(macro->output); ++o) {
+ pptoken *out = macro->output[o];
+ switch (out->token) {
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ case TOKEN_KEYWORD:
+ if (!macro_params_find(macro, out->value, &pi)) {
+ ftepp_out(ftepp, out->value, false);
+ break;
+ } else {
+ for (pv = 0; pv < vec_size(params[pi].tokens); ++pv) {
+ out = params[pi].tokens[pv];
+ if (out->token == TOKEN_EOL)
+ ftepp_out(ftepp, "\n", false);
+ else
+ ftepp_out(ftepp, out->value, false);
+ }
+ }
+ break;
+ case '#':
+ if (o + 1 < vec_size(macro->output)) {
+ nextok = macro->output[o+1]->token;
+ if (nextok == '#') {
+ /* raw concatenation */
+ ++o;
+ break;
+ }
+ if ( (nextok == TOKEN_IDENT ||
+ nextok == TOKEN_KEYWORD ||
+ nextok == TOKEN_TYPENAME) &&
+ macro_params_find(macro, macro->output[o+1]->value, &pi))
+ {
+ ++o;
+ ftepp_stringify(ftepp, ¶ms[pi]);
+ break;
+ }
+ }
+ ftepp_out(ftepp, "#", false);
+ break;
+ case TOKEN_EOL:
+ ftepp_out(ftepp, "\n", false);
+ break;
+ default:
+ ftepp_out(ftepp, out->value, false);
+ break;
+ }
+ }
+ vec_push(ftepp->output_string, 0);
+ /* Now run the preprocessor recursively on this string buffer */
+ /*
+ printf("__________\n%s\n=========\n", ftepp->output_string);
+ */
+ inlex = lex_open_string(ftepp->output_string, vec_size(ftepp->output_string)-1, ftepp->lex->name);
+ if (!inlex) {
+ ftepp_error(ftepp, "internal error: failed to instantiate lexer");
+ retval = false;
+ goto cleanup;
+ }
+ ftepp->output_string = old_string;
+ ftepp->lex = inlex;
+ ftepp_recursion_header(ftepp);
+ if (!ftepp_preprocess(ftepp)) {
+ lex_close(ftepp->lex);
+ retval = false;
+ goto cleanup;
+ }
+ ftepp_recursion_footer(ftepp);
+ old_string = ftepp->output_string;
+
+cleanup:
+ ftepp->lex = old_lexer;
+ ftepp->output_string = old_string;
+ return retval;
+}
+
static bool ftepp_macro_call(ftepp_t *ftepp, ppmacro *macro)
{
size_t o;
macroparam *params = NULL;
bool retval = true;
- ftepp_next(ftepp);
-
if (!macro->has_params) {
- for (o = 0; o < vec_size(macro->output); ++o) {
- ftepp_out(ftepp, macro->output[o]->value, false);
- }
+ if (!ftepp_macro_expand(ftepp, macro, NULL))
+ return false;
+ ftepp_next(ftepp);
return true;
}
+ ftepp_next(ftepp);
if (!ftepp_skipallwhite(ftepp))
return false;
goto cleanup;
}
-
- ftepp_out(ftepp, "Parsed macro parameters", false);
- goto cleanup;
+ if (!ftepp_macro_expand(ftepp, macro, params))
+ retval = false;
+ ftepp_next(ftepp);
cleanup:
for (o = 0; o < vec_size(params); ++o)
(void)ftepp_next(ftepp);
if (!ftepp_skipspace(ftepp))
return false;
- if (ftepp->token != TOKEN_EOL) {
+ /* relaxing this condition
+ if (ftepp->token != TOKEN_EOL && ftepp->token != TOKEN_EOF) {
ftepp_error(ftepp, "stray tokens after #ifdef");
return false;
}
+ */
cond->on = !!macro;
return true;
}
+/**
+ * undef is also simple
+ */
+static bool ftepp_undef(ftepp_t *ftepp)
+{
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ if (ftepp->output_on) {
+ switch (ftepp->token) {
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ case TOKEN_KEYWORD:
+ ftepp_macro_delete(ftepp, ftepp_tokval(ftepp));
+ break;
+ default:
+ ftepp_error(ftepp, "expected macro name");
+ return false;
+ }
+ }
+
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ /* relaxing this condition
+ if (ftepp->token != TOKEN_EOL && ftepp->token != TOKEN_EOF) {
+ ftepp_error(ftepp, "stray tokens after #ifdef");
+ return false;
+ }
+ */
+ return true;
+}
+
+/* Special unescape-string function which skips a leading quote
+ * and stops at a quote, not just at \0
+ */
+static void unescape(const char *str, char *out) {
+ ++str;
+ while (*str && *str != '"') {
+ if (*str == '\\') {
+ ++str;
+ switch (*str) {
+ case '\\': *out++ = *str; break;
+ case '"': *out++ = *str; break;
+ case 'a': *out++ = '\a'; break;
+ case 'b': *out++ = '\b'; break;
+ case 'r': *out++ = '\r'; break;
+ case 'n': *out++ = '\n'; break;
+ case 't': *out++ = '\t'; break;
+ case 'f': *out++ = '\f'; break;
+ case 'v': *out++ = '\v'; break;
+ default:
+ *out++ = '\\';
+ *out++ = *str;
+ break;
+ }
+ ++str;
+ continue;
+ }
+
+ *out++ = *str++;
+ }
+ *out = 0;
+}
+
+static char *ftepp_include_find(ftepp_t *ftepp, const char *file)
+{
+ char *filename = NULL;
+ size_t len;
+
+ if (ftepp->itemname) {
+ const char *last_slash;
+ last_slash = strrchr(ftepp->itemname, '/');
+ if (last_slash) {
+ len = last_slash - ftepp->itemname;
+ memcpy(vec_add(filename, len), ftepp->itemname, len);
+ vec_push(filename, '/');
+ }
+ else {
+ len = strlen(ftepp->itemname);
+ memcpy(vec_add(filename, len), ftepp->itemname, len);
+ if (vec_last(filename) != '/')
+ vec_push(filename, '/');
+ }
+ }
+ len = strlen(file);
+ memcpy(vec_add(filename, len), file, len);
+ vec_push(filename, 0);
+ return filename;
+}
+
+/**
+ * Include a file.
+ * FIXME: do we need/want a -I option?
+ * FIXME: what about when dealing with files in subdirectories coming from a progs.src?
+ */
+static bool ftepp_include(ftepp_t *ftepp)
+{
+ lex_file *old_lexer = ftepp->lex;
+ lex_file *inlex;
+ lex_ctx ctx;
+ char lineno[128];
+ char *filename;
+
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ if (ftepp->token != TOKEN_STRINGCONST) {
+ ftepp_error(ftepp, "expected filename to include");
+ return false;
+ }
+
+ ctx = ftepp_ctx(ftepp);
+
+ unescape(ftepp_tokval(ftepp), ftepp_tokval(ftepp));
+
+ ftepp_out(ftepp, "\n#pragma file(", false);
+ ftepp_out(ftepp, ftepp_tokval(ftepp), false);
+ ftepp_out(ftepp, ")\n#pragma line(1)\n", false);
+
+ filename = ftepp_include_find(ftepp, ftepp_tokval(ftepp));
+ inlex = lex_open(filename);
+ if (!inlex) {
+ ftepp_error(ftepp, "failed to open include file `%s`", filename);
+ vec_free(filename);
+ return false;
+ }
+ vec_free(filename);
+ ftepp->lex = inlex;
+ if (!ftepp_preprocess(ftepp)) {
+ lex_close(ftepp->lex);
+ ftepp->lex = old_lexer;
+ return false;
+ }
+ lex_close(ftepp->lex);
+ ftepp->lex = old_lexer;
+
+ ftepp_out(ftepp, "\n#pragma file(", false);
+ ftepp_out(ftepp, ctx.file, false);
+ snprintf(lineno, sizeof(lineno), ")\n#pragma line(%lu)\n", (unsigned long)(ctx.line+1));
+ ftepp_out(ftepp, lineno, false);
+
+ /* skip the line */
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token != TOKEN_EOL) {
+ ftepp_error(ftepp, "stray tokens after #include");
+ return false;
+ }
+ (void)ftepp_next(ftepp);
+
+ return true;
+}
+
/* Basic structure handlers */
static bool ftepp_else_allowed(ftepp_t *ftepp)
{
if (!strcmp(ftepp_tokval(ftepp), "define")) {
return ftepp_define(ftepp);
}
+ else if (!strcmp(ftepp_tokval(ftepp), "undef")) {
+ return ftepp_undef(ftepp);
+ }
else if (!strcmp(ftepp_tokval(ftepp), "ifdef")) {
if (!ftepp_ifdef(ftepp, &cond))
return false;
cond.was_on = cond.on;
vec_push(ftepp->conditions, cond);
+ ftepp->output_on = ftepp->output_on && cond.on;
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "ifndef")) {
cond.on = !cond.on;
cond.was_on = cond.on;
vec_push(ftepp->conditions, cond);
+ ftepp->output_on = ftepp->output_on && cond.on;
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "elifdef")) {
pc = &vec_last(ftepp->conditions);
pc->on = !pc->was_on && cond.on;
pc->was_on = pc->was_on || pc->on;
+ ftepp_update_output_condition(ftepp);
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "elifndef")) {
pc = &vec_last(ftepp->conditions);
pc->on = !pc->was_on && cond.on;
pc->was_on = pc->was_on || pc->on;
+ ftepp_update_output_condition(ftepp);
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "elif")) {
pc = &vec_last(ftepp->conditions);
pc->on = !pc->was_on && cond.on;
pc->was_on = pc->was_on || pc->on;
+ ftepp_update_output_condition(ftepp);
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "if")) {
return false;
cond.was_on = cond.on;
vec_push(ftepp->conditions, cond);
+ ftepp->output_on = ftepp->output_on && cond.on;
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "else")) {
pc->on = !pc->was_on;
pc->had_else = true;
ftepp_next(ftepp);
+ ftepp_update_output_condition(ftepp);
break;
}
else if (!strcmp(ftepp_tokval(ftepp), "endif")) {
}
vec_pop(ftepp->conditions);
ftepp_next(ftepp);
+ ftepp_update_output_condition(ftepp);
+ break;
+ }
+ else if (!strcmp(ftepp_tokval(ftepp), "include")) {
+ return ftepp_include(ftepp);
+ }
+ else if (!strcmp(ftepp_tokval(ftepp), "pragma")) {
+ ftepp_out(ftepp, "#", false);
break;
}
else {
case TOKEN_EOF:
ftepp_error(ftepp, "missing newline at end of file", ftepp_tokval(ftepp));
return false;
+
+ /* Builtins! Don't forget the builtins! */
+ case TOKEN_INTCONST:
+ case TOKEN_FLOATCONST:
+ ftepp_out(ftepp, "#", false);
+ return true;
}
if (!ftepp_skipspace(ftepp))
return false;
{
if (ftepp->token >= TOKEN_EOF)
break;
-
+#if 0
ftepp->newline = newline;
newline = false;
+#else
+ /* For the sake of FTE compatibility... FU, really */
+ ftepp->newline = newline = true;
+#endif
switch (ftepp->token) {
case TOKEN_KEYWORD:
} while (!ftepp->errors && ftepp->token < TOKEN_EOF);
newline = ftepp->token == TOKEN_EOF;
- ftepp_delete(ftepp);
return newline;
}
+/* Like in parser.c - files keep the previous state so we have one global
+ * preprocessor. Except here we will want to warn about dangling #ifs.
+ */
+static ftepp_t *ftepp;
+
+static bool ftepp_preprocess_done()
+{
+ bool retval = true;
+ lex_close(ftepp->lex);
+ ftepp->lex = NULL;
+ if (vec_size(ftepp->conditions)) {
+ if (ftepp_warn(ftepp, WARN_MULTIFILE_IF, "#if spanning multiple files, is this intended?"))
+ retval = false;
+ }
+ if (ftepp->itemname) {
+ mem_d(ftepp->itemname);
+ ftepp->itemname = NULL;
+ }
+ return retval;
+}
+
bool ftepp_preprocess_file(const char *filename)
{
- ftepp_t *ftepp = ftepp_init();
ftepp->lex = lex_open(filename);
+ ftepp->itemname = util_strdup(filename);
if (!ftepp->lex) {
con_out("failed to open file \"%s\"\n", filename);
return false;
}
- return ftepp_preprocess(ftepp);
+ if (!ftepp_preprocess(ftepp)) {
+ ftepp_delete(ftepp);
+ return false;
+ }
+ return ftepp_preprocess_done();
}
bool ftepp_preprocess_string(const char *name, const char *str)
{
- ftepp_t *ftepp = ftepp_init();
ftepp->lex = lex_open_string(str, strlen(str), name);
+ ftepp->itemname = util_strdup(name);
if (!ftepp->lex) {
con_out("failed to create lexer for string \"%s\"\n", name);
return false;
}
- return ftepp_preprocess(ftepp);
+ if (!ftepp_preprocess(ftepp)) {
+ ftepp_delete(ftepp);
+ return false;
+ }
+ return ftepp_preprocess_done();
+}
+
+bool ftepp_init()
+{
+ ftepp = ftepp_new();
+ return !!ftepp;
+}
+
+const char *ftepp_get()
+{
+ return ftepp->output_string;
+}
+
+void ftepp_flush()
+{
+ vec_free(ftepp->output_string);
+}
+
+void ftepp_finish()
+{
+ if (!ftepp)
+ return;
+ ftepp_delete(ftepp);
+ ftepp = NULL;
}
projects / xonotic / gmqcc.git / blobdiff