+ return 1;
+}
+static inline int validate_impl_set_stmts(PSI_Validator *V, impl *impl) {
+ size_t i, j, k;
+ /* we can have any count of set stmts; processing out vars */
+ /* check that set stmts reference known variables */
+ for (i = 0; i < impl->stmts->set.count; ++i) {
+ set_stmt *set = impl->stmts->set.list[i];
+ int check = 0;
+
+ if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
+ impl_arg *iarg = impl->func->args->args[j];
+
+ if (!strcmp(set->var->name, iarg->var->name)) {
+ set->arg = iarg;
+ check = 1;
+ break;
+ }
+ }
+ if (!check) {
+ V->error(PSI_WARNING, "Unknown variable '$%s' of `set` statement"
+ " of implementation '%s'",
+ set->var->name, impl->func->name);
+ return 0;
+ }
+
+ for (j = 0; j < set->val->vars->count; ++j) {
+ decl_var *set_var = set->val->vars->vars[j];
+
+ check = 0;
+ if (impl->decl->args) for (k = 0; k < impl->decl->args->count; ++k) {
+ decl_arg *set_arg = impl->decl->args->args[k];
+
+ if (!strcmp(set_var->name, set_arg->var->name)) {
+ check = 1;
+ set_var->arg = set_arg;
+ break;
+ }
+ }
+
+ if (!check) {
+ V->error(PSI_WARNING, "Unknown value '%s' of `set` statement"
+ " for variable '$%s' of implementation '%s'",
+ set_var->name, set->arg->var->name, impl->func->name);
+ return 0;
+ }
+ }
+ }
+ return 1;
+}
+static inline int validate_impl_free_stmts(PSI_Validator *V, impl *impl) {
+ size_t i, j, k;
+ /* we can have any count of free stmts; freeing any out vars */
+ for (i = 0; i < impl->stmts->fre.count; ++i) {
+ free_stmt *fre = impl->stmts->fre.list[i];
+
+ for (j = 0; j < fre->vars->count; ++j) {
+ decl_var *free_var = fre->vars->vars[j];
+ int check = 0;
+
+ if (!strcmp(free_var->name, impl->decl->func->var->name)) {
+ continue;
+ }
+ if (impl->decl->args) for (k = 0; k < impl->decl->args->count; ++k) {
+ decl_arg *free_arg = impl->decl->args->args[k];
+
+ if (!strcmp(free_var->name, free_arg->var->name)) {
+ check = 1;
+ free_var->arg = free_arg;
+ break;
+ }
+ }
+
+ if (!check) {
+ V->error(PSI_WARNING, "Unknown variable '%s' of `free` statement"
+ " of implementation '%s'",
+ free_var->name, impl->func->name);
+ return 0;
+ }
+ }
+ }
+ return 1;
+}
+static inline int validate_impl_stmts(PSI_Validator *V, impl *impl) {
+ if (!impl->stmts) {
+ V->error(PSI_WARNING, "Missing body for implementation %s!",
+ impl->func->name);
+ return 0;
+ }