build cleanup
[m6w6/ext-psi] / src / context.c
index 7670462cd255e8769f0d01caa7ffa3ae803d8729..ebe4e08ed5fddabe4cb34f3e35cfae3202d89bed 100644 (file)
-#include <sys/param.h>
-#include <dirent.h>
-#include <fnmatch.h>
-#include <errno.h>
+/*******************************************************************************
+ Copyright (c) 2016, Michael Wallner <mike@php.net>.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+     * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+     * Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
 
 #include "php.h"
+
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+# define NAMLEN(dirent) strlen ((dirent)->d_name)
+#else
+# define dirent direct
+# define NAMLEN(dirent) ((dirent)->d_namlen)
+# ifdef HAVE_SYS_NDIR_H
+#  include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+#  include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+#  include <ndir.h>
+# endif
+#endif
+
+#include <unistd.h>
+#include <fnmatch.h>
+
+#if PSI_THREADED_PARSER
+# include <pthread.h>
+#endif
+
 #include "php_scandir.h"
-#include "context.h"
+#include "php_psi.h"
+#include "calc.h"
+#include "call.h"
+#include "libjit.h"
+#include "libffi.h"
+
+#include "token.h"
 #include "parser.h"
-#include "validator.h"
 
-PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
+PHP_MINIT_FUNCTION(psi_context)
+{
+       unsigned flags = 0;
+       struct psi_context_ops *ops = NULL;
+
+#ifdef HAVE_LIBJIT
+       if (!strcasecmp(PSI_G(engine), "jit")) {
+               ops = psi_libjit_ops();
+       } else
+#endif
+#ifdef HAVE_LIBFFI
+               ops = psi_libffi_ops();
+#endif
+
+       if (!ops) {
+               php_error(E_WARNING, "No PSI engine found");
+               return FAILURE;
+       }
+
+       PSI_G(ops) = ops;
+       if (ops->load && !ops->load()) {
+               return FAILURE;
+       }
+
+       if (psi_check_env("PSI_DEBUG")) {
+               flags |= PSI_DEBUG;
+       }
+       if (psi_check_env("PSI_SILENT")) {
+               flags |= PSI_SILENT;
+       }
+
+       PSI_G(context) = psi_context_init(NULL, PSI_G(ops), psi_error_wrapper, flags);
+       psi_context_build(PSI_G(context), PSI_G(directory));
+
+       return SUCCESS;
+}
+
+PHP_MSHUTDOWN_FUNCTION(psi_context)
+{
+       if (psi_check_env("PSI_DUMP")) {
+               struct psi_dump dump = {{.hn = stdout}, (psi_dump_cb) fprintf};
+
+               psi_context_dump(&dump, PSI_G(context));
+       }
+
+       psi_context_free(&PSI_G(context));
+
+       if (PSI_G(ops)->free) {
+               PSI_G(ops)->free();
+       }
+
+       return SUCCESS;
+}
+
+struct psi_context *psi_context_init(struct psi_context *C, struct psi_context_ops *ops, psi_error_cb error, unsigned flags)
 {
        if (!C) {
-               C = malloc(sizeof(*C));
+               C = pemalloc(sizeof(*C), 1);
        }
        memset(C, 0, sizeof(*C));
 
-       C->error = error;
+       psi_data_ctor(PSI_DATA(C), error, flags);
        C->ops = ops;
-       ops->init(C);
+
+       if (ops->init && !ops->init(C)) {
+               return NULL;
+       }
 
        return C;
 }
 
+static bool psi_context_add(struct psi_context *C, struct psi_parser *P)
+{
+       bool valid;
+       struct psi_data *D;
+       struct psi_validate_scope scope = {0};
+
+       C->data = safe_perealloc(C->data, (C->count + 1), sizeof(*C->data), 0, 1);
+       D = psi_data_exchange(&C->data[C->count++], PSI_DATA(P));
+
+       psi_validate_scope_ctor(&scope);
+       scope.cpp = P->preproc;
+       valid = psi_validate(&scope, PSI_DATA(C), D);
+       psi_validate_scope_dtor(&scope);
+
+       return valid;
+}
+
+struct psi_context_build_worker {
+       pthread_t tid;
+       struct psi_parser parser;
+       struct psi_parser_input *input;
+       char psi_file[MAXPATHLEN];
+};
+
+static struct psi_context_build_worker *psi_context_build_worker_init(
+               struct psi_context *C, const char *dir, const char *file)
+{
+       struct psi_context_build_worker *w = pecalloc(1, sizeof(*w), 1);
+
+       if (MAXPATHLEN <= slprintf(w->psi_file, MAXPATHLEN, "%s/%s", dir, file)) {
+               C->error(PSI_DATA(C), NULL, PSI_WARNING, "Path to PSI file too long: %s/%s",
+                       dir, file);
+               pefree(w, 1);
+               return NULL;
+       }
+       if (!psi_parser_init(&w->parser, C->error, C->flags)) {
+               C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to init PSI parser (%s): %s",
+                       w->psi_file, strerror(errno));
+               pefree(w, 1);
+               return NULL;
+       }
+       return w;
+}
+
+#if PSI_THREADED_PARSER
+static void *psi_context_build_worker_thread(void *thread_ptr)
+{
+       struct psi_context_build_worker *thread = thread_ptr;
+       psi_parser_parse(&thread->parser, thread->input);
+       return NULL;
+}
+
+static bool psi_context_build_worker_thread_start(
+               struct psi_context_build_worker *w)
+{
+       unsigned tries = 0;
+       int rc;
+
+again: ;
+       rc = pthread_create(&w->tid, NULL, psi_context_build_worker_thread, w);
+
+       switch (rc) {
+       case 0:
+               return true;
+       case EAGAIN:
+               if (tries++ < 10) {
+                       goto again;
+               }
+               /* no break */
+       default:
+               w->parser.error(PSI_DATA(&w->parser), NULL, PSI_WARNING,
+                               "Failed to start parser thread: %s", strerror(rc));
+               w->tid = 0;
+               return false;
+       }
+}
+#endif
+
+static bool psi_context_build_worker_exec(struct psi_context_build_worker *w)
+{
+       if (!(w->input = psi_parser_open_file(&w->parser, w->psi_file, true))) {
+               w->parser.error(PSI_DATA(&w->parser), NULL, PSI_WARNING,
+                               "Failed to open PSI file (%s): %s", w->psi_file, strerror(errno));
+               return false;
+       }
+#if PSI_THREADED_PARSER
+       return psi_context_build_worker_thread_start(w);
+#else
+       return psi_parser_parse(&w->parser, w->input);
+#endif
+}
+
+static bool psi_context_build_worker_done(struct psi_context_build_worker *w)
+{
+#if PSI_THREADED_PARSER
+       void *rval = NULL;
+
+       if (!w->tid) {
+               return true;
+       }
+
+# if HAVE_PTHREAD_TRYJOIN_NP
+       if (0 == pthread_tryjoin_np(w->tid, &rval)) {
+               w->tid = 0;
+               return true;
+       }
+# else
+       if (0 == pthread_join(w->tid, &rval)) {
+               w->tid = 0;
+               return true;
+       }
+# endif
+       return false;
+#else
+       return true;
+#endif
+}
+
+static void psi_context_build_worker_dtor(struct psi_context_build_worker *w)
+{
+#if PSI_THREADED_PARSER
+       if (w->tid) {
+               void *rval;
+               int rc = pthread_join(w->tid, &rval);
+
+               if (rc) {
+                       w->parser.error(PSI_DATA(&w->parser), NULL, PSI_WARNING,
+                                       "Failed to finish parser thread: %s", strerror(errno));
+               }
+       }
+#endif
+       psi_parser_input_free(&w->input);
+       psi_parser_dtor(&w->parser);
+}
+
+static void psi_context_build_worker_free(struct psi_context_build_worker **w)
+{
+       if (*w) {
+               psi_context_build_worker_dtor(*w);
+               pefree(*w, 1);
+               *w = NULL;
+       }
+}
+
 static int psi_select_dirent(const struct dirent *entry)
 {
 #ifndef FNM_CASEFOLD
-#define FNM_CASEFOLD 0
+# define FNM_CASEFOLD 0
 #endif
        return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
 }
 
-
-void PSI_ContextBuild(PSI_Context *C, const char *path)
+void psi_context_build(struct psi_context *C, const char *paths)
 {
-       int i, n;
-       struct dirent **entries = NULL;
+       char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
+       struct psi_context_build_worker *worker;
+       struct psi_plist *workers = psi_plist_init(
+                       (psi_plist_dtor) psi_context_build_worker_free);
+
+       do {
+               struct dirent **entries = NULL;
+               int i, n;
 
-       n = php_scandir(path, &entries, psi_select_dirent, alphasort);
+               if ((sep = strchr(ptr, ':'))) {
+                       *sep = 0;
+               }
 
-       if (n < 0) {
-               return;
-               C->error(PSI_WARNING, "Failed to scan PSI directory '%s'", path);
-       } else for (i = 0; i < n; ++i) {
-               char psi[MAXPATHLEN];
-               PSI_Parser P;
-               PSI_Validator V;
+               n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
 
-               if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", path, entries[i]->d_name)) {
-                       C->error(PSI_WARNING, "Path to PSI file too long: %s/%s",
-                               path, entries[i]->d_name);
+               if (n < 0) {
+                       C->error(PSI_DATA(C), NULL, PSI_WARNING,
+                                       "Failed to scan PSI directory '%s':%s", strerror(errno));
+               } else {
+                       for (i = 0; i < n; ++i) {
+                               worker = psi_context_build_worker_init(C, ptr, entries[i]->d_name);
+                               if (worker) {
+                                       workers = psi_plist_add(workers, &worker);
+                               }
+                               free(entries[i]);
+                       }
+                       free(entries);
                }
-               if (!PSI_ParserInit(&P, psi, C->error, 0)) {
-                       C->error(PSI_WARNING, "Failed to init PSI parser (%s): %s",
-                               psi, strerror(errno));
-                       continue;
+               ptr = sep + 1;
+       } while (sep);
+
+       free(cpy);
+
+       if (psi_plist_count(workers)) {
+               struct psi_plist *running = psi_plist_init(
+                               (psi_plist_dtor) psi_context_build_worker_free);
+               long active = 0;
+#ifdef _SC_NPROCESSORS_ONLN
+               long pool = sysconf(_SC_NPROCESSORS_ONLN);
+#else
+               long pool = 4;
+#endif
+
+               while (psi_plist_count(workers) && active < pool) {
+                       if (psi_plist_pop(workers, &worker)) {
+                               if (psi_context_build_worker_exec(worker)) {
+                                       running = psi_plist_add(running, &worker);
+                                       ++active;
+                               }
+                       }
+               }
+               while (active) {
+                       size_t i = 0;
+
+                       while (psi_plist_get(running, i++, &worker)) {
+                               if (psi_context_build_worker_done(worker)) {
+                                       psi_context_add(C, &worker->parser);
+
+                                       psi_plist_del(running, --i, NULL);
+                                       psi_context_build_worker_free(&worker);
+
+                                       if (psi_plist_pop(workers, &worker)) {
+                                               psi_plist_add(running, &worker);
+                                       } else {
+                                               --active;
+                                       }
+                               }
+                       }
                }
+       }
 
-               while (-1 != PSI_ParserScan(&P)) {
-                       PSI_ParserParse(&P, PSI_TokenAlloc(&P));
-               };
-               PSI_ParserParse(&P, NULL);
+       psi_context_compile(C);
+}
 
-               if (!PSI_ValidatorInit(&V, &P)) {
-                       C->error(PSI_WARNING, "Failed to init PSI validator");
+#include <ctype.h>
+static inline bool prefix_match(zend_string *a, zend_string *b)
+{
+       size_t i;
+
+       for (i = 0; i < a->len && i < b->len; ++i) {
+               if (tolower(a->val[i]) != tolower(b->val[i])) {
+                       return false;
+               }
+               if (i && a->val[i] == '_') {
                        break;
                }
-               PSI_ParserDtor(&P);
+       }
 
-               if (PSI_ValidatorValidate(&V)) {
-                       zend_function_entry *closures;
+       return true;
+}
 
-                       if (V.consts) {
-                               zend_constant zc;
+static inline void psi_context_consts_init(struct psi_context *C)
+{
+       zend_constant zc;
 
-                               zc.flags = CONST_PERSISTENT|CONST_CS;
-                               zc.module_number = EG(current_module)->module_number;
+       ZEND_CONSTANT_SET_FLAGS(&zc, CONST_CS|CONST_PERSISTENT, EG(current_module)->module_number);
 
-                               for (i = 0; i < V.consts->count; ++i) {
-                                       constant *c = V.consts->list[i];
+       if (C->consts) {
+               size_t i = 0;
+               struct psi_const *c;
 
-                                       zc.name = zend_string_init(c->name + (c->name[0] == '\\'), strlen(c->name) - (c->name[0] == '\\'), 1);
-                                       ZVAL_NEW_STR(&zc.value, zend_string_init(c->val->text, strlen(c->val->text), 1));
+               while (psi_plist_get(C->consts, i++, &c)) {
 
-                                       switch (c->type->type) {
-                                       case PSI_T_BOOL:
-                                               convert_to_boolean(&zc.value);
-                                               break;
-                                       case PSI_T_INT:
-                                               convert_to_long(&zc.value);
-                                               break;
-                                       case PSI_T_FLOAT:
-                                               convert_to_double(&zc.value);
-                                               break;
-                                       }
-                                       zend_register_constant(&zc);
+                       if (zend_get_constant(c->name)) {
+                               continue;
+                       }
+
+                       zc.name = zend_string_copy(c->name);
+                       psi_impl_def_val_get_zval(c->val, c->type ? c->type->type : PSI_T_MIXED, &zc.value);
+
+                       zend_register_constant(&zc);
+               }
+       }
+       if (C->enums) {
+               size_t i = 0;
+               struct psi_decl_enum *e;
+
+               while (psi_plist_get(C->enums, i++, &e)) {
+                       size_t j = 0;
+                       struct psi_decl_enum_item *item;
+
+                       while (psi_plist_get(e->items, j++, &item)) {
+                               zend_string *name;
+
+                               if (psi_decl_type_is_anon(e->name, "enum")
+                                               || prefix_match(e->name, item->name)) {
+                                       name = strpprintf(0, "psi\\%s", item->name->val);
+                               } else {
+
+                                       name = strpprintf(0, "psi\\%s\\%s", e->name->val, item->name->val);
+                               }
+
+                               if (zend_get_constant(name)) {
+                                       zend_string_release(name);
+                                       continue;
                                }
+
+                               zc.name = zend_string_dup(name, 1);
+                               ZVAL_LONG(&zc.value, psi_num_exp_get_long(item->num, NULL, NULL));
+                               zend_register_constant(&zc);
+                               zend_string_release(name);
+                       }
+               }
+       }
+}
+
+static inline void psi_context_extvars_init(struct psi_context *C)
+{
+       if (C->vars) {
+               size_t v = 0;
+               struct psi_decl_extvar *evar;
+
+               while (psi_plist_get(C->vars, v++, &evar)) {
+                       C->ops->extvar_init(C, evar);
+               }
+       }
+}
+
+static inline void psi_context_callback_init(struct psi_context *C,
+               struct psi_let_exp *let_exp, struct psi_impl *impl)
+{
+       struct psi_let_func *fn = let_exp->data.func;
+
+       switch (let_exp->kind) {
+       case PSI_LET_CALLBACK:
+               C->ops->cb_init(C, let_exp, impl);
+               /* override fn */
+               fn = let_exp->data.callback->func;
+               /* no break */
+       case PSI_LET_FUNC:
+               if (fn->inner) {
+                       size_t i = 0;
+                       struct psi_let_exp *inner_let;
+
+                       while (psi_plist_get(fn->inner, i++, &inner_let)) {
+                               psi_context_callback_init(C, inner_let, impl);
+                       }
+               }
+               break;
+       default:
+               break;
+       }
+}
+
+static inline void psi_context_callback_dtor(struct psi_context *C,
+               struct psi_let_exp *let_exp, struct psi_impl *impl)
+{
+       struct psi_let_func *fn = let_exp->data.func;
+
+       switch (let_exp->kind) {
+       case PSI_LET_CALLBACK:
+               C->ops->cb_dtor(C, let_exp, impl);
+               /* override func */
+               fn = let_exp->data.callback->func;
+               /* no break */
+       case PSI_LET_FUNC:
+               if (fn->inner) {
+                       size_t i = 0;
+                       struct psi_let_exp *cb;
+
+                       while (psi_plist_get(fn->inner, i++, &cb)) {
+                               psi_context_callback_dtor(C, cb, impl);
                        }
+               }
+               break;
+       default:
+               break;
+       }
+}
+
+static inline void psi_context_impls_init(struct psi_context *C)
+{
+       size_t nf = 0;
+       zend_function_entry *zfe = NULL;
 
-                       closures = PSI_ContextCompile(C, (PSI_Data *) &V);
-                       if (closures && SUCCESS != zend_register_functions(NULL, closures, NULL, MODULE_PERSISTENT)) {
-                               C->error(PSI_WARNING, "Failed to register functions!");
+       if (C->impls) {
+               size_t i = 0;
+               struct psi_impl *impl;
+
+               zfe = pecalloc(psi_plist_count(C->impls) + 1, sizeof(*zfe), 1);
+
+               while (psi_plist_get(C->impls, i++, &impl)) {
+                       zend_function_entry *zf = &zfe[nf];
+                       struct psi_let_stmt *let;
+                       size_t l = 0;
+
+                       if (!impl->decl) {
+                               continue;
+                       }
+                       if (!C->ops->decl_init(C, impl->decl)) {
+                               continue;
+                       }
+                       if (!C->ops->impl_init(C, impl, &zf->handler)) {
+                               continue;
                        }
+                       while (psi_plist_get(impl->stmts.let, l++, &let)) {
+                               psi_context_callback_init(C, let->exp, impl);
+                       }
+
+                       zf->fname = impl->func->name->val + (impl->func->name->val[0] == '\\');
+                       zf->num_args = psi_plist_count(impl->func->args);
+                       zf->arg_info = psi_internal_arginfo(impl);
+                       ++nf;
                }
-               PSI_ValidatorDtor(&V);
        }
-       if (entries) {
-               for (i = 0; i < n; ++i) {
-                       free(entries[i]);
+
+       C->closures = zfe;
+}
+
+static inline void psi_context_decls_init(struct psi_context *C)
+{
+       if (C->decls) {
+               size_t d = 0;
+               struct psi_decl *decl;
+
+               while (psi_plist_get(C->decls, d++, &decl)) {
+                       if (!decl->info) {
+                               C->ops->decl_init(C, decl);
+                       }
                }
-               free(entries);
        }
+}
 
+struct psi_struct_type_data {
+       struct psi_plist *els;
+       size_t offset;
+       size_t max_align;
+};
+
+static inline void psi_struct_type_pad(struct psi_context *C,
+               struct psi_struct_type_data *data, size_t padding)
+{
+       void *ele = C->ops->typeof_decl(C, PSI_T_INT8);
+
+       while (padding--) {
+               void *pad = C->ops->copyof_type(C, ele);
+               data->els = psi_plist_add(data->els, &pad);
+       }
 }
 
-zend_function_entry *PSI_ContextCompile(PSI_Context *C, PSI_Data *D)
+static inline void psi_struct_type_element(struct psi_context *C,
+               struct psi_struct_type_data *data, struct psi_decl_arg *darg)
 {
-       size_t count = C->count++;
-       zend_function_entry *zfe;
+       void *type, *copy;
+       size_t i;
+       struct psi_layout type_layout;
+
+       if (darg->layout->pos) {
+               assert(data->offset <= darg->layout->pos);
+               psi_struct_type_pad(C, data, darg->layout->pos - data->offset);
+               data->offset = darg->layout->pos;
+       }
+
+       type = psi_context_decl_arg_full_type(C, darg);
+       C->ops->layoutof_type(C, type, &type_layout);
+
+       if (type_layout.pos > data->max_align) {
+               data->max_align = type_layout.pos;
+       }
+
+       assert(type_layout.len <= darg->layout->len);
+
+       for (i = 0; i < (darg->var->array_size ?: 1); ++i) {
+               copy = C->ops->copyof_type(C, type);
+               data->els = psi_plist_add(data->els, &copy);
+       }
+       assert(darg->layout->len == type_layout.len * (darg->var->array_size ?: 1));
+       data->offset += darg->layout->len;
+}
 
-       C->data = realloc(C->data, C->count * sizeof(*C->data));
-       PSI_DataExchange(&C->data[count], D);
+static inline void psi_context_decl_struct_type_elements(struct psi_context *C,
+               struct psi_decl_struct *strct, struct psi_plist **els)
+{
+       size_t i = 0;
+       struct psi_decl_arg *darg, *prev = NULL;
+       struct psi_struct_type_data data = {0};
 
-       zfe = C->ops->compile(C, &C->data[count]);
+       data.els = *els;
+       while (psi_plist_get(strct->args, i++, &darg)) {
+               if (prev && prev->layout->pos == darg->layout->pos) {
+                       /* skip bit fields */
+                       continue;
+               }
+               psi_struct_type_element(C, &data, darg);
+       }
 
-       C->closures = realloc(C->closures, C->count * sizeof(*C->closures));
-       C->closures[count] = zfe;
+       data.offset = (data.offset + data.max_align - 1) & ~(data.max_align - 1);
+       assert(data.offset <= strct->size);
+       psi_struct_type_pad(C, &data, strct->size - data.offset);
 
-       return zfe;
+       *els = data.els;
 }
 
-void PSI_ContextDtor(PSI_Context *C)
+static inline void *psi_context_decl_arg_type(struct psi_context *C,
+               struct psi_decl_arg *darg)
 {
+       struct psi_decl_type *real = psi_decl_type_get_real(darg->type);
+
+       if (real != darg->type && darg->type->real.def->var->pointer_level) {
+               return C->ops->typeof_decl(C, PSI_T_POINTER);
+       }
+
+       if (real->type == PSI_T_UNION) {
+               struct psi_decl_arg *arg;
+               psi_plist_get(real->real.unn->args, 0, &arg);
+               return psi_context_decl_arg_full_type(C, arg);
+       }
+
+       if (real->type == PSI_T_STRUCT) {
+               C->ops->composite_init(C, darg);
+               return darg->engine.type;
+       }
+
+       return C->ops->typeof_decl(C, real->type);
+}
+
+void *psi_context_decl_arg_call_type(struct psi_context *C,
+               struct psi_decl_arg *darg)
+{
+       if (darg->var->pointer_level) {
+               return C->ops->typeof_decl(C, PSI_T_POINTER);
+       }
+
+       return psi_context_decl_arg_type(C, darg);
+}
+
+void *psi_context_decl_arg_full_type(struct psi_context *C,
+               struct psi_decl_arg *darg)
+{
+       if (darg->var->array_size) {
+               C->ops->composite_init(C, darg);
+               return darg->engine.type;
+       }
+       if (darg->var->pointer_level) {
+               return C->ops->typeof_decl(C, PSI_T_POINTER);
+       }
+
+       return psi_context_decl_arg_type(C, darg);
+}
+
+void **psi_context_composite_type_elements(struct psi_context *C,
+               struct psi_decl_arg *darg, struct psi_plist **eles)
+{
+       struct psi_decl_type *dtype;
+       struct psi_decl_arg *tmp;
+       void *type, *copy;
+
+       dtype = psi_decl_type_get_real(darg->type);
+
+       switch (dtype->type) {
+       case PSI_T_STRUCT:
+               psi_context_decl_struct_type_elements(C, dtype->real.strct, eles);
+               break;
+       case PSI_T_UNION:
+               if (psi_plist_bottom(dtype->real.unn->args, &tmp)) {
+                       type = psi_context_decl_arg_full_type(C, tmp);
+                       copy = C->ops->copyof_type(C, type);
+                       *eles = psi_plist_add(*eles, &copy);
+               }
+               break;
+       default:
+               type = psi_context_decl_arg_type(C, darg);
+               for (size_t i = 0; i < darg->var->array_size; ++i) {
+                       copy = C->ops->copyof_type(C, type);
+                       *eles = psi_plist_add(*eles, &copy);
+               }
+       }
+
+       return psi_plist_eles(*eles);
+}
+
+/*
+void psi_context_decl_func_array_elements(struct psi_context *C,
+               struct psi_decl *fn, struct psi_plist **els)
+{
+       void *type;
        size_t i;
 
-       C->ops->dtor(C);
+       if (fn->func->var->pointer_level > 1) {
+               type = C->ops->typeof_decl(C, PSI_T_POINTER);
+       } else {
+               type = psi_context_decl_type(C, fn->func->type);
+       }
 
-       for (i = 0; i < C->count; ++i) {
-               PSI_DataDtor(&C->data[i]);
-               if (C->closures[i]){
-                       free(C->closures[i]->arg_info);
-                       free(C->closures[i]);
+       for (i = 0; i < fn->func->var->array_size; ++i) {
+               void *copy = C->ops->copyof_type(C, type);
+               *els = psi_plist_add(*els, &copy);
+       }
+}
+
+void *psi_context_decl_func_type(struct psi_context *C, struct psi_decl *fn)
+{
+       struct psi_decl_arg *darg = fn->func;
+
+       if (darg->engine.type) {
+               return darg->engine.type;
+       }
+
+       if (darg->var->pointer_level) {
+               if (!darg->var->array_size) {
+                       return C->ops->typeof_decl(C, PSI_T_POINTER);
+               } else {
+                       C->ops->composite_init(C, darg);
+                       return darg->engine.type;
                }
        }
-       free(C->data);
-       free(C->closures);
 
-       memset(C, 0, sizeof(*C));
+       return psi_context_decl_type(C, darg->type);
 }
+*/
 
-void PSI_ContextFree(PSI_Context **C)
+void psi_context_compile(struct psi_context *C)
+{
+       psi_context_consts_init(C);
+       psi_context_extvars_init(C);
+       psi_context_impls_init(C);
+       psi_context_decls_init(C);
+
+       /* zend_register_functions depends on EG(current_module) pointing into module */
+       EG(current_module) = zend_hash_str_find_ptr(&module_registry, "psi", sizeof("psi") - 1);
+       if (SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
+               C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to register functions!");
+       }
+       EG(current_module) = NULL;
+}
+
+ZEND_RESULT_CODE psi_context_call(struct psi_context *C, zend_execute_data *execute_data, zval *return_value, struct psi_impl *impl)
+{
+       struct psi_call_frame *frame;
+
+       frame = psi_call_frame_init(C, impl->decl, impl);
+
+       if (SUCCESS != psi_call_frame_parse_args(frame, execute_data)) {
+               psi_call_frame_free(frame);
+
+               return FAILURE;
+       }
+
+       psi_call_frame_enter(frame);
+
+       if (SUCCESS != psi_call_frame_do_let(frame)) {
+               psi_call_frame_do_return(frame, return_value);
+               psi_call_frame_free(frame);
+
+               return FAILURE;
+       }
+
+       if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_PRE)) {
+               psi_call_frame_do_return(frame, return_value);
+               psi_call_frame_free(frame);
+
+               return FAILURE;
+       }
+
+       if (psi_call_frame_num_var_args(frame)) {
+               C->ops->call_va(frame);
+       } else {
+               C->ops->call(frame);
+       }
+
+       if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_POST)) {
+               psi_call_frame_do_return(frame, return_value);
+               psi_call_frame_free(frame);
+
+               return FAILURE;
+       }
+
+       psi_call_frame_do_return(frame, return_value);
+       psi_call_frame_do_set(frame);
+       psi_call_frame_do_free(frame);
+       psi_call_frame_free(frame);
+
+       return SUCCESS;
+}
+
+
+void psi_context_dtor(struct psi_context *C)
+{
+       size_t i;
+       zend_function_entry *zfe;
+
+       if (C->decls) {
+               size_t i = 0;
+               struct psi_decl *decl;
+
+               while (psi_plist_get(C->decls, i++, &decl)) {
+                       size_t j = 0;
+                       struct psi_decl_arg *darg;
+
+                       while (psi_plist_get(decl->args, j++, &darg)) {
+                               C->ops->composite_dtor(C, darg);
+                       }
+                       C->ops->composite_dtor(C, decl->func);
+                       C->ops->decl_dtor(C, decl);
+               }
+
+       }
+       if (C->vars) {
+               size_t i = 0;
+               struct psi_decl_extvar *evar;
+
+               while (psi_plist_get(C->vars, i++, &evar)) {
+                       C->ops->composite_dtor(C, evar->getter->func);
+                       C->ops->composite_dtor(C, evar->arg);
+                       C->ops->extvar_dtor(C, evar);
+               }
+       }
+       if (C->impls) {
+               size_t i = 0;
+               struct psi_impl *impl;
+
+               while (psi_plist_get(C->impls, i++, &impl)) {
+                       struct psi_let_stmt *let;
+                       size_t j = 0;
+
+                       while (psi_plist_get(impl->stmts.let, j++, &let)) {
+                               psi_context_callback_dtor(C, let->exp, impl);
+                       }
+
+                       C->ops->impl_dtor(C, impl);
+               }
+       }
+
+       if (C->ops->dtor) {
+               C->ops->dtor(C);
+       }
+
+       psi_data_dtor(PSI_DATA(C));
+
+       if (C->data) {
+               for (i = 0; i < C->count; ++i) {
+                       psi_data_dtor(&C->data[i]);
+               }
+               free(C->data);
+       }
+
+       if (C->closures) {
+               for (zfe = C->closures; zfe->fname; ++zfe) {
+                       pefree((void *) zfe->arg_info, 1);
+               }
+               pefree(C->closures, 1);
+       }
+}
+
+void psi_context_free(struct psi_context **C)
 {
        if (*C) {
-               PSI_ContextDtor(*C);
+               psi_context_dtor(*C);
                free(*C);
                *C = NULL;
        }
 }
 
+void psi_context_dump(struct psi_dump *dump, struct psi_context *C)
+{
+       PSI_DUMP(dump, "// psi.engine=%s\n// %lu files\n",
+                       C->ops->name, C->count);
+
+       psi_data_dump(dump, PSI_DATA(C));
+
+#if 0
+       if (C->flags & PSI_DEBUG) {
+               size_t i;
+
+               for (i = 0; i < C->count; ++i) {
+                       psi_data_dump(dump, &C->data[i]);
+               }
+       }
+#endif
+}