split decl to allow functors as arg
[m6w6/ext-psi] / src / context.c
index 2d821ad2ab97d93d481ce5cf7f5f95fb434f5431..d1eb05e35323aed7137f258c808b24420cb402e6 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.
+*******************************************************************************/
+
+#include "php_psi_stdinc.h"
+
+#include "php.h"
 
-#ifdef HAVE_CONFIG_H
-# include "config.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 "php.h"
+#include <fnmatch.h>
+
 #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"
-
-#define psi_predef_count(of) ((sizeof(psi_predef ##of## s)/sizeof(psi_predef ##of))-1)
-typedef struct psi_predef_type {
-       token_t type_tag;
-       const char *type_name;
-       const char *alias;
-} psi_predef_type;
-static const psi_predef_type psi_predef_types[] = {
-       PHP_PSI_TYPES{0}
-};
-#define psi_predef_type_count() psi_predef_count(_type)
-
-typedef struct psi_predef_const {
-       token_t type_tag;
-       const char *type_name;
-       const char *name;
-       const char *val_text;
-       token_t val_type_tag;
-} psi_predef_const;
-static const psi_predef_const psi_predef_consts[] = {
-       PHP_PSI_CONSTS{0}
-};
-#define psi_predef_const_count() psi_predef_count(_const)
-
-typedef struct psi_predef_struct_member {
-       token_t type_tag;
-       const char *type_name;
-       const char *name;
-       size_t off;
-       size_t len;
-       size_t pointer_level;
-       size_t array_size;
-} psi_predef_struct_member;
-#define PSI_PREDEF_STRUCT_MEMBERS 32
-typedef struct psi_predef_struct {
-       const char *name;
-       psi_predef_struct_member members[PSI_PREDEF_STRUCT_MEMBERS];
-} psi_predef_struct;
-static const psi_predef_struct psi_predef_structs[] = {
-       PHP_PSI_STRUCTS{0}
-};
-#define psi_predef_struct_count() psi_predef_count(_struct)
-
-PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
+
+#define PSI_PREDEF_TYPES
+#define PSI_PREDEF_CONSTS
+#define PSI_PREDEF_COMPOSITES
+#define PSI_PREDEF_DECLS
+#include "php_psi_posix.h"
+
+struct psi_context *psi_context_init(struct psi_context *C, struct psi_context_ops *ops, psi_error_cb error, unsigned flags)
 {
-       size_t i, j;
-       PSI_Data data;
+       struct psi_data T;
+       struct psi_predef_type *predef_type;
+       struct psi_predef_const *predef_const;
+       struct psi_predef_composite *predef_composite;
+       struct psi_predef_decl *predef_decl;
 
        if (!C) {
                C = malloc(sizeof(*C));
        }
        memset(C, 0, sizeof(*C));
 
-       C->error = error;
+       psi_data_ctor(PSI_DATA(C), error, flags);
        C->ops = ops;
-       ops->init(C);
 
-       memset(&data, 0, sizeof(data));
-       for (i = 0; i < psi_predef_type_count(); ++i) {
-               const psi_predef_type *pre = &psi_predef_types[i];
-               decl_type *type = init_decl_type(pre->type_tag, pre->type_name);
-               decl_typedef *def = init_decl_typedef(pre->alias, type);
-
-               data.defs = add_decl_typedef(data.defs, def);
+       if (ops->init) {
+               ops->init(C);
        }
-       for (i = 0; i < psi_predef_const_count(); ++i) {
-               const psi_predef_const *pre = &psi_predef_consts[i];
-               impl_def_val *val = init_impl_def_val(pre->val_type_tag, pre->val_text);
-               const_type *type = init_const_type(pre->type_tag, pre->type_name);
-               constant *constant = init_constant(type, pre->name, val);
 
-               data.consts = add_constant(data.consts, constant);
-       }
-       for (i = 0; i < psi_predef_struct_count(); ++i) {
-               const psi_predef_struct *pre = &psi_predef_structs[i];
-               decl_args *dargs = init_decl_args(NULL);
+       assert(ops->call != NULL);
+       assert(ops->compile != NULL);
+
+       /* build up predefs in a temporary PSI_Data for validation */
+       memset(&T, 0, sizeof(T));
+       psi_data_ctor_with_dtors(&T, error, flags);
 
-               for (j = 0; j < PSI_PREDEF_STRUCT_MEMBERS; ++j) {
-                       const psi_predef_struct_member *member = &pre->members[j];
-                       decl_type *type;
-                       decl_var *dvar;
+       for (predef_type = &psi_predef_types[0]; predef_type->type_tag; ++predef_type) {
+               struct psi_decl_type *type = psi_decl_type_init(predef_type->type_tag, predef_type->type_name);
+               struct psi_decl_var *var = psi_decl_var_init(predef_type->alias, 0, 0); /* FIXME: indirection */
+               struct psi_decl_arg *def = psi_decl_arg_init(type, var);
 
-                       if (!member->name) {
+               T.types = psi_plist_add(T.types, &def);
+       }
+       for (predef_const = &psi_predef_consts[0]; predef_const->type_tag; ++predef_const) {
+               struct psi_const_type *type = psi_const_type_init(predef_const->type_tag, predef_const->type_name);
+               struct psi_impl_def_val *val;
+               struct psi_const *constant;
+
+               switch (type->type) {
+               case PSI_T_INT:
+                       val = psi_impl_def_val_init(PSI_T_INT, NULL);
+                       val->ival.zend.lval = predef_const->value.lval;
+                       break;
+               case PSI_T_STRING:
+                       val = psi_impl_def_val_init(PSI_T_STRING, NULL);
+                       val->ival.zend.str = zend_string_init(predef_const->value.ptr, strlen(predef_const->value.ptr), 1);
+                       break;
+               default:
+                       assert(0);
+                       break;
+               }
+
+               constant = psi_const_init(type, predef_const->var_name, val);
+               T.consts = psi_plist_add(T.consts, &constant);
+       }
+       for (predef_composite = &psi_predef_composites[0]; predef_composite->type_tag; ++predef_composite) {
+               struct psi_predef_composite *member;
+               struct psi_decl_struct *dstruct;
+               struct psi_decl_union *dunion;
+               struct psi_plist *dargs = psi_plist_init((psi_plist_dtor) psi_decl_arg_free);
+
+               switch (predef_composite->type_tag) {
+               case PSI_T_STRUCT:
+                       dstruct = psi_decl_struct_init(predef_composite->var_name, dargs);
+                       dstruct->size = predef_composite->size;
+                       dstruct->align = predef_composite->offset;
+                       break;
+               case PSI_T_UNION:
+                       dunion = psi_decl_union_init(predef_composite->var_name, dargs);
+                       dunion->size = predef_composite->size;
+                       dunion->align = predef_composite->offset;
+                       break;
+               default:
+                       assert(0);
+               }
+               for (member = &predef_composite[1]; member->type_tag; ++member) {
+                       struct psi_decl_type *type;
+                       struct psi_decl_var *dvar;
+                       struct psi_decl_arg *darg;
+
+                       type = psi_decl_type_init(member->type_tag, member->type_name);
+                       dvar = psi_decl_var_init(member->var_name, member->pointer_level, member->array_size);
+                       darg = psi_decl_arg_init(type, dvar);
+                       darg->layout = psi_layout_init(member->offset, member->size);
+
+                       switch (predef_composite->type_tag) {
+                       case PSI_T_STRUCT:
+                               dstruct->args = psi_plist_add(dstruct->args, &darg);
+                               break;
+                       case PSI_T_UNION:
+                               dunion->args = psi_plist_add(dunion->args, &darg);
                                break;
+                       default:
+                               assert(0);
                        }
+               }
+               switch (predef_composite->type_tag) {
+               case PSI_T_STRUCT:
+                       T.structs = psi_plist_add(T.structs, &dstruct);
+                       break;
+               case PSI_T_UNION:
+                       T.unions = psi_plist_add(T.unions, &dunion);
+                       break;
+               default:
+                       assert(0);
+               }
+
+               predef_composite = member;
+       }
+       for (predef_decl = &psi_predef_decls[0]; predef_decl->type_tag; ++predef_decl) {
+               struct psi_predef_decl *farg;
+               struct psi_decl_type *dtype, *ftype = psi_decl_type_init(predef_decl->type_tag, predef_decl->type_name);
+               struct psi_decl_var *fname = psi_decl_var_init(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
+               struct psi_decl_arg *tdef, *func = psi_decl_arg_init(ftype, fname);
+               struct psi_plist *args = psi_plist_init((psi_plist_dtor) psi_decl_arg_free);
+               struct psi_decl *decl = psi_decl_init(func, args);
+
+               for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
+                       struct psi_decl_type *arg_type = psi_decl_type_init(farg->type_tag, farg->type_name);
+                       struct psi_decl_var *arg_var = psi_decl_var_init(farg->var_name, farg->pointer_level, farg->array_size);
+                       struct psi_decl_arg *darg = psi_decl_arg_init(arg_type, arg_var);
+                       decl->args = psi_plist_add(decl->args, &darg);
+               }
 
-                       type = init_decl_type(member->type_tag, member->type_name);
-                       dvar = init_decl_var(member->name, member->pointer_level, member->array_size);
-                       dargs = add_decl_arg(dargs, init_decl_arg(type, dvar));
+               switch (predef_decl->kind) {
+               case DECL_KIND_VARARG:
+                       decl->varargs = 1;
+                       /* no break */
+               case DECL_KIND_STD:
+                       T.decls = psi_plist_add(T.decls, &decl);
+                       break;
+               case DECL_KIND_FUNCTOR:
+                       dtype = psi_decl_type_init(PSI_T_FUNCTION, fname->name);
+                       dtype->real.func = decl;
+                       tdef = psi_decl_arg_init(dtype, psi_decl_var_copy(fname));
+                       T.types = psi_plist_add(T.types, &tdef);
+                       break;
+               default:
+                       assert(0);
                }
 
-               data.structs = add_decl_struct(data.structs,
-                               init_decl_struct(pre->name, dargs));
+               predef_decl = farg;
        }
+
+       psi_context_add_data(C, &T);
+
        return C;
 }
 
 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;
-
-       n = php_scandir(path, &entries, psi_select_dirent, alphasort);
+       char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
+       struct dirent **entries;
 
-       if (n < 0) {
-               return;
-       } else for (i = 0; i < n; ++i) {
-               char psi[MAXPATHLEN];
-               PSI_Parser P;
-               PSI_Validator V;
+       do {
+               sep = strchr(ptr, ':');
 
-               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 (sep) {
+                       *sep = 0;
                }
-               if (!PSI_ParserInit(&P, psi, C->error, 0)) {
-                       C->error(PSI_WARNING, "Failed to init PSI parser (%s): %s",
-                               psi, strerror(errno));
-                       continue;
-               }
-
-               while (-1 != PSI_ParserScan(&P)) {
-                       PSI_ParserParse(&P, PSI_TokenAlloc(&P));
-               };
-               PSI_ParserParse(&P, NULL);
 
-               if (!PSI_ValidatorInit(&V, &P)) {
-                       C->error(PSI_WARNING, "Failed to init PSI validator");
-                       break;
+               entries = NULL;
+               n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
+
+               if (n > 0) {
+                       for (i = 0; i < n; ++i) {
+                               char psi[MAXPATHLEN];
+                               struct psi_parser P;
+                               struct psi_parser_input *I;
+
+                               if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", ptr, entries[i]->d_name)) {
+                                       C->error(PSI_DATA(C), NULL, PSI_WARNING, "Path to PSI file too long: %s/%s",
+                                               ptr, entries[i]->d_name);
+                               }
+                               if (!psi_parser_init(&P, C->error, C->flags)) {
+                                       C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to init PSI parser (%s): %s",
+                                               psi, strerror(errno));
+                                       continue;
+                               }
+                               if (!(I = psi_parser_open_file(&P, psi, true))) {
+                                       C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to open PSI file (%s): %s",
+                                               psi, strerror(errno));
+                                       continue;
+                               }
+                               psi_parser_parse(&P, I);
+                               psi_context_add_data(C, PSI_DATA(&P));
+                               psi_parser_dtor(&P);
+                               free(I);
+                       }
                }
-               PSI_ParserDtor(&P);
-
-               if (PSI_ValidatorValidate(&V)) {
-                       zend_function_entry *closures;
 
-                       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 (entries) {
+                       for (i = 0; i < n; ++i) {
+                               free(entries[i]);
                        }
+                       free(entries);
                }
-               PSI_ValidatorDtor(&V);
-       }
-       if (entries) {
-               for (i = 0; i < n; ++i) {
-                       free(entries[i]);
-               }
-               free(entries);
+
+               ptr = sep + 1;
+       } while (sep);
+
+
+       if (psi_context_compile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
+               C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to register functions!");
        }
 
+       free(cpy);
 }
 
-zend_function_entry *PSI_ContextCompile(PSI_Context *C, PSI_Data *D)
+zend_function_entry *psi_context_compile(struct psi_context *C)
 {
-       size_t i, count = C->count++;
-       zend_function_entry *zfe;
+       zend_constant zc;
+
+       zc.flags = CONST_PERSISTENT|CONST_CS;
+       zc.module_number = EG(current_module)->module_number;
 
-       if (D->consts) {
-               zend_constant zc;
+       if (C->consts) {
+               size_t i = 0;
+               struct psi_const *c;
 
-               zc.flags = CONST_PERSISTENT|CONST_CS;
-               zc.module_number = EG(current_module)->module_number;
+               while (psi_plist_get(C->consts, i++, &c)) {
 
-               for (i = 0; i < D->consts->count; ++i) {
-                       constant *c = D->consts->list[i];
+                       if (zend_get_constant_str(c->name, strlen(c->name))) {
+                               continue;
+                       }
 
-                       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));
+                       zc.name = zend_string_init(c->name, strlen(c->name), 1);
 
                        switch (c->type->type) {
                        case PSI_T_BOOL:
-                               convert_to_boolean(&zc.value);
+                               ZVAL_BOOL(&zc.value, c->val->ival.zend.bval);
                                break;
                        case PSI_T_INT:
-                               convert_to_long(&zc.value);
+                               ZVAL_LONG(&zc.value, c->val->ival.zend.lval);
                                break;
                        case PSI_T_FLOAT:
-                               convert_to_double(&zc.value);
+                               ZVAL_DOUBLE(&zc.value, c->val->ival.dval);
+                               break;
+                       case PSI_T_STRING:
+                       case PSI_T_QUOTED_STRING:
+                               ZVAL_NEW_STR(&zc.value, zend_string_copy(c->val->ival.zend.str));
+                               break;
+                       default:
+                               assert(0);
                                break;
                        }
+
                        zend_register_constant(&zc);
                }
        }
 
-       C->data = realloc(C->data, C->count * sizeof(*C->data));
-       PSI_DataExchange(&C->data[count], D);
+       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 = strpprintf(0, "psi\\%s\\%s", e->name, item->name);
+
+                               zc.name = zend_string_dup(name, 1);
+                               ZVAL_LONG(&zc.value, psi_long_num_exp(item->num, NULL, NULL));
+                               zend_register_constant(&zc);
+                               zend_string_release(name);
+                       }
+               }
+       }
+
+       return C->closures = C->ops->compile(C);
+}
+
+
+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);
 
-       zfe = C->ops->compile(C, &C->data[count]);
+               return FAILURE;
+       }
+
+       psi_call_frame_do_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);
 
-       C->closures = realloc(C->closures, C->count * sizeof(*C->closures));
-       C->closures[count] = zfe;
+               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 zfe;
+       return SUCCESS;
 }
 
-void PSI_ContextDtor(PSI_Context *C)
+
+void psi_context_dtor(struct psi_context *C)
 {
        size_t i;
+       zend_function_entry *zfe;
+
+       if (C->ops->dtor) {
+               C->ops->dtor(C);
+       }
 
-       C->ops->dtor(C);
+       psi_data_dtor(PSI_DATA(C));
 
-       for (i = 0; i < C->count; ++i) {
-               PSI_DataDtor(&C->data[i]);
-               if (C->closures[i]){
-                       free(C->closures[i]);
+       if (C->data) {
+               for (i = 0; i < C->count; ++i) {
+                       psi_data_dtor(&C->data[i]);
                }
+               free(C->data);
        }
-       free(C->data);
-       free(C->closures);
 
-       memset(C, 0, sizeof(*C));
+       if (C->closures) {
+               for (zfe = C->closures; zfe->fname; ++zfe) {
+                       free((void *) zfe->arg_info);
+               }
+               free(C->closures);
+       }
 }
 
-void PSI_ContextFree(PSI_Context **C)
+void psi_context_free(struct psi_context **C)
 {
        if (*C) {
-               PSI_ContextDtor(*C);
+               psi_context_dtor(*C);
                free(*C);
                *C = NULL;
        }
 }
+
+bool psi_context_add_data(struct psi_context *C, struct psi_data *P)
+{
+       struct psi_data *D;
+
+       C->data = realloc(C->data, (C->count + 1) * sizeof(*C->data));
+       D = psi_data_exchange(&C->data[C->count++], P);
+
+       return psi_data_validate(PSI_DATA(C), D);
+}
+
+void psi_context_dump(struct psi_context *C, int fd)
+{
+
+       dprintf(fd, "// psi.engine=%s\n",
+                       (char *) C->ops->query(C, PSI_CONTEXT_QUERY_SELF, NULL));
+
+       psi_data_dump(fd, PSI_DATA(C));
+
+//     size_t i;
+//     dprintf(fd, "/* parsed\n");
+//     for (i = 0; i < C->count; ++i) {
+//             psi_data_dump(fd, &C->data[i]);
+//     }
+//     dprintf(fd, "*/\n");
+
+}