--- /dev/null
+/*
+ * Copyright (C) 2012
+ * Wolfgang Bumiller
+ *
+ * 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"
+#include "lexer.h"
+
+typedef struct {
+ bool on;
+ bool was_on;
+ bool had_else;
+} ppcondition;
+
+typedef struct {
+ int token;
+ char *value;
+ /* a copy from the lexer */
+ union {
+ vector v;
+ int i;
+ double f;
+ int t; /* type */
+ } constval;
+} pptoken;
+
+typedef struct {
+ lex_ctx ctx;
+
+ char *name;
+ char **params;
+ /* yes we need an extra flag since `#define FOO x` is not the same as `#define FOO() x` */
+ bool has_params;
+
+ pptoken **output;
+} ppmacro;
+
+typedef struct {
+ lex_file *lex;
+ int token;
+ bool newline;
+ unsigned int errors;
+
+ bool output_on;
+ ppcondition *conditions;
+ ppmacro **macros;
+
+ bool to_string;
+ char *output;
+ FILE *output_file;
+} ftepp_t;
+
+#define ftepp_tokval(f) ((f)->lex->tok.value)
+#define ftepp_ctx(f) ((f)->lex->tok.ctx)
+
+static void ftepp_errorat(ftepp_t *ftepp, lex_ctx ctx, const char *fmt, ...)
+{
+ va_list ap;
+
+ ftepp->errors++;
+
+ va_start(ap, fmt);
+ con_vprintmsg(LVL_ERROR, ctx.file, ctx.line, "error", fmt, ap);
+ va_end(ap);
+}
+
+static void ftepp_error(ftepp_t *ftepp, const char *fmt, ...)
+{
+ va_list ap;
+
+ ftepp->errors++;
+
+ va_start(ap, fmt);
+ con_vprintmsg(LVL_ERROR, ftepp->lex->tok.ctx.file, ftepp->lex->tok.ctx.line, "error", fmt, ap);
+ 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;
+}
+
+static void pptoken_delete(pptoken *self)
+{
+ mem_d(self->value);
+ mem_d(self);
+}
+
+static ppmacro *ppmacro_new(lex_ctx ctx, const char *name)
+{
+ ppmacro *macro = (ppmacro*)mem_a(sizeof(ppmacro));
+ memset(macro, 0, sizeof(*macro));
+ macro->name = util_strdup(name);
+ return macro;
+}
+
+static void ppmacro_delete(ppmacro *self)
+{
+ size_t i;
+ for (i = 0; i < vec_size(self->params); ++i)
+ mem_d(self->params[i]);
+ vec_free(self->params);
+ for (i = 0; i < vec_size(self->output); ++i)
+ pptoken_delete(self->output[i]);
+ vec_free(self->output);
+ mem_d(self->name);
+ mem_d(self);
+}
+
+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;
+ for (i = 0; i < vec_size(self->macros); ++i)
+ ppmacro_delete(self->macros[i]);
+ vec_free(self->macros);
+ vec_free(self->conditions);
+ if (self->lex)
+ lex_close(self->lex);
+ if (self->output_file)
+ fclose(self->output_file);
+ mem_d(self);
+}
+
+static void ftepp_out(ftepp_t *ftepp, const char *str, bool ignore_cond)
+{
+ if (ignore_cond || ftepp->output_on)
+ {
+ size_t len;
+ char *data;
+ if (!ftepp->to_string) {
+ fprintf((ftepp->output_file ? ftepp->output_file : stdout), "%s", str);
+ return;
+ }
+ len = strlen(str);
+ data = vec_add(ftepp->output, len);
+ memcpy(data, str, len);
+ }
+}
+
+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) {
+ if (!strcmp(name, ftepp->macros[i]->name))
+ return 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));
+}
+
+/* Important: this does not skip newlines! */
+static bool ftepp_skipspace(ftepp_t *ftepp)
+{
+ if (ftepp->token != TOKEN_WHITE)
+ return true;
+ while (ftepp_next(ftepp) == TOKEN_WHITE) {}
+ if (ftepp->token >= TOKEN_EOF) {
+ ftepp_error(ftepp, "unexpected end of preprocessor directive");
+ return false;
+ }
+ return true;
+}
+
+/* this one skips EOLs as well */
+static bool ftepp_skipallwhite(ftepp_t *ftepp)
+{
+ if (ftepp->token != TOKEN_WHITE && ftepp->token != TOKEN_EOL)
+ return true;
+ do {
+ ftepp_next(ftepp);
+ } while (ftepp->token == TOKEN_WHITE || ftepp->token == TOKEN_EOL);
+ if (ftepp->token >= TOKEN_EOF) {
+ ftepp_error(ftepp, "unexpected end of preprocessor directive");
+ return false;
+ }
+ return true;
+}
+
+/**
+ * The huge macro parsing code...
+ */
+static bool ftepp_define_params(ftepp_t *ftepp, ppmacro *macro)
+{
+ do {
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token == ')')
+ break;
+ switch (ftepp->token) {
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ case TOKEN_KEYWORD:
+ break;
+ default:
+ ftepp_error(ftepp, "unexpected token in parameter list");
+ return false;
+ }
+ vec_push(macro->params, util_strdup(ftepp_tokval(ftepp)));
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ } while (ftepp->token == ',');
+ if (ftepp->token != ')') {
+ ftepp_error(ftepp, "expected closing paren after macro parameter list");
+ return false;
+ }
+ ftepp_next(ftepp);
+ /* skipspace happens in ftepp_define */
+ return true;
+}
+
+static bool ftepp_define_body(ftepp_t *ftepp, ppmacro *macro)
+{
+ pptoken *ptok;
+ while (ftepp->token != TOKEN_EOL && ftepp->token < TOKEN_EOF) {
+ ptok = pptoken_make(ftepp);
+ vec_push(macro->output, ptok);
+ ftepp_next(ftepp);
+ }
+ /* 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;
+ }
+ return true;
+}
+
+static bool ftepp_define(ftepp_t *ftepp)
+{
+ ppmacro *macro;
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ switch (ftepp->token) {
+ 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:
+ ftepp_error(ftepp, "expected macro name");
+ return false;
+ }
+
+ (void)ftepp_next(ftepp);
+
+ if (ftepp->token == '(') {
+ macro->has_params = true;
+ if (!ftepp_define_params(ftepp, macro))
+ return false;
+ }
+
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ if (!ftepp_define_body(ftepp, macro))
+ return false;
+
+ if (ftepp->output_on)
+ vec_push(ftepp->macros, macro);
+ else {
+ ppmacro_delete(macro);
+ }
+ return true;
+}
+
+/**
+ * When a macro is used we have to handle parameters as well
+ * as special-concatenation via ## or stringification via #
+ *
+ * Note: parenthesis can nest, so FOO((a),b) is valid, but only
+ * this kind of parens. Curly braces or [] don't count towards the
+ * paren-level.
+ */
+typedef struct {
+ pptoken **tokens;
+} macroparam;
+
+static void macroparam_clean(macroparam *self)
+{
+ size_t i;
+ for (i = 0; i < vec_size(self->tokens); ++i)
+ pptoken_delete(self->tokens[i]);
+ 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;
+ pptoken *ptok;
+ macroparam mp;
+ 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;
+ else if (ftepp->token == ')') {
+ if (!parens)
+ break;
+ --parens;
+ }
+ ptok = pptoken_make(ftepp);
+ vec_push(mp.tokens, ptok);
+ if (ftepp_next(ftepp) >= TOKEN_EOF) {
+ ftepp_error(ftepp, "unexpected EOF in macro call");
+ goto on_error;
+ }
+ }
+ vec_push(params, mp);
+ mp.tokens = NULL;
+ if (ftepp->token == ')')
+ break;
+ if (ftepp->token != ',') {
+ ftepp_error(ftepp, "expected closing paren or comma in macro call");
+ goto on_error;
+ }
+ if (ftepp_next(ftepp) >= TOKEN_EOF) {
+ ftepp_error(ftepp, "unexpected EOF in macro call");
+ 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;
+
+on_error:
+ if (mp.tokens)
+ macroparam_clean(&mp);
+ for (i = 0; i < vec_size(params); ++i)
+ macroparam_clean(¶ms[i]);
+ vec_free(params);
+ 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 bool ftepp_preprocess(ftepp_t *ftepp);
+static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *params)
+{
+ char *old_string = ftepp->output;
+ bool old_string_flag = ftepp->to_string;
+ lex_file *old_lexer = ftepp->lex;
+ bool retval = true;
+
+ size_t o, pi, pv;
+ lex_file *inlex;
+
+ /* really ... */
+ if (!vec_size(macro->output))
+ return true;
+
+ ftepp->output = NULL;
+ ftepp->to_string = true;
+ 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) && macro->output[o+1]->token == '#') {
+ /* raw concatenation */
+ ++o;
+ 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, 0);
+ /* Now run the preprocessor recursively on this string buffer */
+ /*
+ printf("__________\n%s\n=========\n", ftepp->output);
+ */
+ inlex = lex_open_string(ftepp->output, vec_size(ftepp->output)-1, ftepp->lex->name);
+ if (!inlex) {
+ ftepp_error(ftepp, "internal error: failed to instantiate lexer");
+ retval = false;
+ goto cleanup;
+ }
+ ftepp->output = old_string;
+ ftepp->to_string = old_string_flag;
+ ftepp->lex = inlex;
+ if (!ftepp_preprocess(ftepp)) {
+ lex_close(ftepp->lex);
+ retval = false;
+ goto cleanup;
+ }
+
+cleanup:
+ ftepp->lex = old_lexer;
+ ftepp->output = old_string;
+ ftepp->to_string = old_string_flag;
+ return retval;
+}
+
+static bool ftepp_macro_call(ftepp_t *ftepp, ppmacro *macro)
+{
+ size_t o;
+ macroparam *params = NULL;
+ bool retval = true;
+
+ if (!macro->has_params) {
+ if (!ftepp_macro_expand(ftepp, macro, NULL))
+ return false;
+ ftepp_next(ftepp);
+ return true;
+ }
+ ftepp_next(ftepp);
+
+ if (!ftepp_skipallwhite(ftepp))
+ return false;
+
+ if (ftepp->token != '(') {
+ ftepp_error(ftepp, "expected macro parameters in parenthesis");
+ return false;
+ }
+
+ ftepp_next(ftepp);
+ if (!ftepp_macro_call_params(ftepp, ¶ms))
+ return false;
+
+ if (vec_size(params) != vec_size(macro->params)) {
+ ftepp_error(ftepp, "macro %s expects %u paramteters, %u provided", macro->name,
+ (unsigned int)vec_size(macro->params),
+ (unsigned int)vec_size(params));
+ retval = false;
+ goto cleanup;
+ }
+
+ if (!ftepp_macro_expand(ftepp, macro, params))
+ retval = false;
+ ftepp_next(ftepp);
+
+cleanup:
+ for (o = 0; o < vec_size(params); ++o)
+ macroparam_clean(¶ms[o]);
+ vec_free(params);
+ return retval;
+}
+
+/**
+ * #if - the FTEQCC way:
+ * defined(FOO) => true if FOO was #defined regardless of parameters or contents
+ * <numbers> => True if the number is not 0
+ * !<factor> => True if the factor yields false
+ * !!<factor> => ERROR on 2 or more unary nots
+ * <macro> => becomes the macro's FIRST token regardless of parameters
+ * <e> && <e> => True if both expressions are true
+ * <e> || <e> => True if either expression is true
+ * <string> => False
+ * <ident> => False (remember for macros the <macro> rule applies instead)
+ * Unary + and - are weird and wrong in fteqcc so we don't allow them
+ * parenthesis in expressions are allowed
+ * parameter lists on macros are errors
+ * No mathematical calculations are executed
+ */
+static bool ftepp_if_expr(ftepp_t *ftepp, bool *out)
+{
+ ppmacro *macro;
+ bool wasnot = false;
+
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ while (ftepp->token == '!') {
+ wasnot = true;
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ }
+
+ switch (ftepp->token) {
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ case TOKEN_KEYWORD:
+ if (!strcmp(ftepp_tokval(ftepp), "defined")) {
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token != '(') {
+ ftepp_error(ftepp, "`defined` keyword in #if requires a macro name in parenthesis");
+ return false;
+ }
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token != TOKEN_IDENT &&
+ ftepp->token != TOKEN_TYPENAME &&
+ ftepp->token != TOKEN_KEYWORD)
+ {
+ ftepp_error(ftepp, "defined() used on an unexpected token type");
+ return false;
+ }
+ macro = ftepp_macro_find(ftepp, ftepp_tokval(ftepp));
+ *out = !!macro;
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token != ')') {
+ ftepp_error(ftepp, "expected closing paren");
+ return false;
+ }
+ break;
+ }
+
+ macro = ftepp_macro_find(ftepp, ftepp_tokval(ftepp));
+ if (!macro || !vec_size(macro->output)) {
+ *out = false;
+ } else {
+ /* This does not expand recursively! */
+ switch (macro->output[0]->token) {
+ case TOKEN_INTCONST:
+ *out = !!(macro->output[0]->constval.f);
+ break;
+ case TOKEN_FLOATCONST:
+ *out = !!(macro->output[0]->constval.f);
+ break;
+ default:
+ *out = false;
+ break;
+ }
+ }
+ break;
+ case TOKEN_STRINGCONST:
+ *out = false;
+ break;
+ case TOKEN_INTCONST:
+ *out = !!(ftepp->lex->tok.constval.i);
+ break;
+ case TOKEN_FLOATCONST:
+ *out = !!(ftepp->lex->tok.constval.f);
+ break;
+
+ case '(':
+ ftepp_next(ftepp);
+ if (!ftepp_if_expr(ftepp, out))
+ return false;
+ if (ftepp->token != ')') {
+ ftepp_error(ftepp, "expected closing paren in #if expression");
+ return false;
+ }
+ break;
+
+ default:
+ ftepp_error(ftepp, "junk in #if");
+ return false;
+ }
+ if (wasnot)
+ *out = !*out;
+
+ ftepp->lex->flags.noops = false;
+ ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ ftepp->lex->flags.noops = true;
+
+ if (ftepp->token == ')')
+ return true;
+
+ if (ftepp->token != TOKEN_OPERATOR)
+ return true;
+
+ if (!strcmp(ftepp_tokval(ftepp), "&&") ||
+ !strcmp(ftepp_tokval(ftepp), "||"))
+ {
+ bool next = false;
+ char opc = ftepp_tokval(ftepp)[0];
+
+ ftepp_next(ftepp);
+ if (!ftepp_if_expr(ftepp, &next))
+ return false;
+
+ if (opc == '&')
+ *out = *out && next;
+ else
+ *out = *out || next;
+ return true;
+ }
+ else {
+ ftepp_error(ftepp, "junk after #if");
+ return false;
+ }
+}
+
+static bool ftepp_if(ftepp_t *ftepp, ppcondition *cond)
+{
+ bool result = false;
+
+ memset(cond, 0, sizeof(*cond));
+ (void)ftepp_next(ftepp);
+
+ if (!ftepp_skipspace(ftepp))
+ return false;
+ if (ftepp->token == TOKEN_EOL) {
+ ftepp_error(ftepp, "expected expression for #if-directive");
+ return false;
+ }
+
+ if (!ftepp_if_expr(ftepp, &result))
+ return false;
+
+ cond->on = result;
+ return true;
+}
+
+/**
+ * ifdef is rather simple
+ */
+static bool ftepp_ifdef(ftepp_t *ftepp, ppcondition *cond)
+{
+ ppmacro *macro;
+ memset(cond, 0, sizeof(*cond));
+ (void)ftepp_next(ftepp);
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ switch (ftepp->token) {
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ case TOKEN_KEYWORD:
+ macro = ftepp_macro_find(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;
+ }
+ */
+ 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;
+}
+
+/* Basic structure handlers */
+static bool ftepp_else_allowed(ftepp_t *ftepp)
+{
+ if (!vec_size(ftepp->conditions)) {
+ ftepp_error(ftepp, "#else without #if");
+ return false;
+ }
+ if (vec_last(ftepp->conditions).had_else) {
+ ftepp_error(ftepp, "multiple #else for a single #if");
+ return false;
+ }
+ return true;
+}
+
+static bool ftepp_hash(ftepp_t *ftepp)
+{
+ ppcondition cond;
+ ppcondition *pc;
+
+ lex_ctx ctx = ftepp_ctx(ftepp);
+
+ if (!ftepp_skipspace(ftepp))
+ return false;
+
+ switch (ftepp->token) {
+ case TOKEN_KEYWORD:
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ 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")) {
+ if (!ftepp_ifdef(ftepp, &cond))
+ return false;
+ 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")) {
+ if (!ftepp_else_allowed(ftepp))
+ return false;
+ if (!ftepp_ifdef(ftepp, &cond))
+ return false;
+ 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")) {
+ if (!ftepp_else_allowed(ftepp))
+ return false;
+ if (!ftepp_ifdef(ftepp, &cond))
+ return false;
+ cond.on = !cond.on;
+ 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")) {
+ if (!ftepp_else_allowed(ftepp))
+ return false;
+ if (!ftepp_if(ftepp, &cond))
+ return false;
+ 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")) {
+ if (!ftepp_if(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), "else")) {
+ if (!ftepp_else_allowed(ftepp))
+ return false;
+ pc = &vec_last(ftepp->conditions);
+ 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")) {
+ if (!vec_size(ftepp->conditions)) {
+ ftepp_error(ftepp, "#endif without #if");
+ return false;
+ }
+ vec_pop(ftepp->conditions);
+ ftepp_next(ftepp);
+ ftepp_update_output_condition(ftepp);
+ break;
+ }
+ else {
+ ftepp_error(ftepp, "unrecognized preprocessor directive: `%s`", ftepp_tokval(ftepp));
+ return false;
+ }
+ break;
+ default:
+ ftepp_error(ftepp, "unexpected preprocessor token: `%s`", ftepp_tokval(ftepp));
+ return false;
+ case TOKEN_EOL:
+ ftepp_errorat(ftepp, ctx, "empty preprocessor directive");
+ return false;
+ 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;
+ return true;
+}
+
+static bool ftepp_preprocess(ftepp_t *ftepp)
+{
+ ppmacro *macro;
+ bool newline = true;
+
+ ftepp->lex->flags.preprocessing = true;
+ ftepp->lex->flags.mergelines = false;
+ ftepp->lex->flags.noops = true;
+
+ ftepp_next(ftepp);
+ do
+ {
+ 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:
+ case TOKEN_IDENT:
+ case TOKEN_TYPENAME:
+ macro = ftepp_macro_find(ftepp, ftepp_tokval(ftepp));
+ if (!macro) {
+ ftepp_out(ftepp, ftepp_tokval(ftepp), false);
+ ftepp_next(ftepp);
+ break;
+ }
+ if (!ftepp_macro_call(ftepp, macro))
+ ftepp->token = TOKEN_ERROR;
+ break;
+ case '#':
+ if (!ftepp->newline) {
+ ftepp_out(ftepp, ftepp_tokval(ftepp), false);
+ ftepp_next(ftepp);
+ break;
+ }
+ ftepp->lex->flags.mergelines = true;
+ if (ftepp_next(ftepp) >= TOKEN_EOF) {
+ ftepp_error(ftepp, "error in preprocessor directive");
+ ftepp->token = TOKEN_ERROR;
+ break;
+ }
+ if (!ftepp_hash(ftepp))
+ ftepp->token = TOKEN_ERROR;
+ ftepp->lex->flags.mergelines = false;
+ break;
+ case TOKEN_EOL:
+ newline = true;
+ ftepp_out(ftepp, "\n", true);
+ ftepp_next(ftepp);
+ break;
+ default:
+ ftepp_out(ftepp, ftepp_tokval(ftepp), false);
+ ftepp_next(ftepp);
+ break;
+ }
+ } while (!ftepp->errors && ftepp->token < TOKEN_EOF);
+
+ newline = ftepp->token == TOKEN_EOF;
+ 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;
+ }
+ return retval;
+}
+
+bool ftepp_preprocess_file(const char *filename)
+{
+ ftepp->lex = lex_open(filename);
+ if (!ftepp->lex) {
+ con_out("failed to open file \"%s\"\n", filename);
+ return false;
+ }
+ 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_new();
+ ftepp->lex = lex_open_string(str, strlen(str), name);
+ if (!ftepp->lex) {
+ con_out("failed to create lexer for string \"%s\"\n", name);
+ return false;
+ }
+ if (!ftepp_preprocess(ftepp)) {
+ ftepp_delete(ftepp);
+ return false;
+ }
+ return ftepp_preprocess_done();
+}
+
+bool ftepp_init(FILE *out)
+{
+ ftepp = ftepp_new();
+ ftepp->output_file = out;
+ return !!ftepp;
+}
+
+void ftepp_finish()
+{
+ if (!ftepp)
+ return;
+ ftepp_delete(ftepp);
+ ftepp = NULL;
+}
static int usage() {
con_out("usage: %s [options] [files...]", app_name);
con_out("options:\n"
- " -h, --help show this help message\n"
- " -debug turns on compiler debug messages\n"
- " -memchk turns on compiler memory leak check\n");
+ " -h, --help show this help message\n"
+ " -debug turns on compiler debug messages\n"
+ " -memchk turns on compiler memory leak check\n");
con_out(" -o, --output=file output file, defaults to progs.dat\n"
- " -a filename add an asm file to be assembled\n"
- " -s filename add a progs.src file to be used\n");
+ " -a filename add an asm file to be assembled\n"
+ " -s filename add a progs.src file to be used\n");
con_out(" -E stop after preprocessing\n");
con_out(" -f<flag> enable a flag\n"
- " -fno-<flag> disable a flag\n"
- " -std standard select one of the following standards\n"
- " -std=qcc original QuakeC\n"
- " -std=fteqcc fteqcc QuakeC\n"
- " -std=gmqcc this compiler (default)\n");
+ " -fno-<flag> disable a flag\n"
+ " -std standard select one of the following standards\n"
+ " -std=qcc original QuakeC\n"
+ " -std=fteqcc fteqcc QuakeC\n"
+ " -std=gmqcc this compiler (default)\n");
con_out(" -W<warning> enable a warning\n"
- " -Wno-<warning> disable a warning\n"
- " -Wall enable all warnings\n"
- " -Werror treat warnings as errors\n");
+ " -Wno-<warning> disable a warning\n"
+ " -Wall enable all warnings\n"
+ " -Werror treat warnings as errors\n");
con_out(" -force-crc=num force a specific checksum into the header\n");
con_out("\n");
con_out("flags:\n"
- " -fadjust-vector-fields\n"
- " when assigning a vector field, its _y and _z fields also get assigned\n"
+ " -fadjust-vector-fields\n"
+ " when assigning a vector field, its _y and _z fields also get assigned\n"
);
return -1;
}
size_t itr;
int retval = 0;
bool opts_output_free = false;
+ bool progs_src = false;
app_name = argv[0];
con_init();
options_set(opts_warn, WARN_EFFECTLESS_STATEMENT, true);
options_set(opts_warn, WARN_END_SYS_FIELDS, true);
options_set(opts_warn, WARN_ASSIGN_FUNCTION_TYPES, true);
+ options_set(opts_warn, WARN_PREPROCESSOR, true);
+ options_set(opts_warn, WARN_MULTIFILE_IF, true);
options_set(opts_flags, ADJUST_VECTOR_FIELDS, true);
con_out("standard = %i\n", opts_standard);
}
- if (!parser_init()) {
- con_out("failed to initialize parser\n");
- retval = 1;
- goto cleanup;
+ if (!opts_pp_only) {
+ if (!parser_init()) {
+ con_err("failed to initialize parser\n");
+ retval = 1;
+ goto cleanup;
+ }
}
-
- util_debug("COM", "starting ...\n");
-
- if (vec_size(items)) {
- con_out("Mode: manual\n");
- con_out("There are %lu items to compile:\n", (unsigned long)vec_size(items));
- for (itr = 0; itr < vec_size(items); ++itr) {
- con_out(" item: %s (%s)\n",
- items[itr].filename,
- ( (items[itr].type == TYPE_QC ? "qc" :
- (items[itr].type == TYPE_ASM ? "asm" :
- (items[itr].type == TYPE_SRC ? "progs.src" :
- ("unknown"))))));
-
- if (!parser_compile_file(items[itr].filename))
- {
- retval = 1;
- goto cleanup;
+ if (opts_pp_only || opts_standard == COMPILER_FTEQCC) {
+ FILE *out = NULL;
+ if (opts_output_wasset) {
+ out = util_fopen(opts_output, "wb");
+ if (!out) {
+ con_err("failed to open `%s` for writing\n", opts_output);
+ retval = 1;
+ goto cleanup;
}
}
-
- if (!parser_finish(opts_output)) {
+ if (!ftepp_init(out)) {
+ con_err("failed to initialize parser\n");
retval = 1;
goto cleanup;
}
+ }
- } else {
+ util_debug("COM", "starting ...\n");
+
+ if (!vec_size(items)) {
FILE *src;
char *line;
size_t linelen = 0;
- con_out("Mode: progs.src\n");
+ progs_src = true;
+
src = util_fopen("progs.src", "rb");
if (!src) {
- con_out("failed to open `progs.src` for reading\n");
+ con_err("failed to open `progs.src` for reading\n");
retval = 1;
goto cleanup;
}
line = NULL;
if (!progs_nextline(&line, &linelen, src) || !line[0]) {
- con_out("illformatted progs.src file: expected output filename in first line\n");
+ con_err("illformatted progs.src file: expected output filename in first line\n");
retval = 1;
goto srcdone;
}
}
while (progs_nextline(&line, &linelen, src)) {
+ argitem item;
if (!line[0] || (line[0] == '/' && line[1] == '/'))
continue;
- con_out(" src: %s\n", line);
- if (!parser_compile_file(line)) {
- retval = 1;
- goto srcdone;
- }
+ item.filename = util_strdup(line);
+ item.type = TYPE_QC;
+ vec_push(items, item);
}
- parser_finish(opts_output);
-
srcdone:
fclose(src);
mem_d(line);
}
+ if (retval)
+ goto cleanup;
+
+ if (vec_size(items)) {
+ if (!opts_pp_only) {
+ con_out("Mode: %s\n", (progs_src ? "progs.src" : "manual"));
+ con_out("There are %lu items to compile:\n", (unsigned long)vec_size(items));
+ }
+ for (itr = 0; itr < vec_size(items); ++itr) {
+ if (!opts_pp_only) {
+ con_out(" item: %s (%s)\n",
+ items[itr].filename,
+ ( (items[itr].type == TYPE_QC ? "qc" :
+ (items[itr].type == TYPE_ASM ? "asm" :
+ (items[itr].type == TYPE_SRC ? "progs.src" :
+ ("unknown"))))));
+ }
+
+ if (opts_pp_only) {
+ if (!ftepp_preprocess_file(items[itr].filename)) {
+ retval = 1;
+ goto cleanup;
+ }
+ }
+ else if (!parser_compile_file(items[itr].filename)) {
+ retval = 1;
+ goto cleanup;
+ }
+
+ if (progs_src) {
+ mem_d(items[itr].filename);
+ items[itr].filename = NULL;
+ }
+ }
+
+ ftepp_finish();
+ if (!opts_pp_only) {
+ if (!parser_finish(opts_output)) {
+ retval = 1;
+ goto cleanup;
+ }
+ }
+ }
+
/* stuff */
cleanup:
util_debug("COM", "cleaning ...\n");
+ ftepp_finish();
con_close();
vec_free(items);
projects / xonotic / gmqcc.git / commitdiff