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Rework module parsing and execution (#4462)

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This patch disables automatic detection of module code, and instead
requires the user to explicitly specify whether to parse a source
as a module or as a script.

To achieve this the jerry_parse API function now takes a new option
which signals that the source should be parsed as a module.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai daniel.batyai@h-lab.eu
This commit is contained in:
Dániel Bátyai
2021-01-18 15:33:43 +01:00
committed by GitHub
parent ef8a6a9f39
commit 0fec9135ec
85 changed files with 575 additions and 492 deletions
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jerry-core/ecma/base/ecma-gc.c
+14
View File
@@ -1630,6 +1630,20 @@ ecma_gc_free_object (ecma_object_t *object_p) /**< object to free */
break;
}
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_MODULE_SYSTEM)
case LIT_MAGIC_STRING_RUNNABLE_UL:
{
ecma_extended_object_t *wrapper_p = (ecma_extended_object_t *) object_p;
JERRY_ASSERT (wrapper_p->u.class_prop.extra_info == ECMA_RUNNABLE_FLAGS_MODULE);
ecma_module_t *root_module_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_module_t,
wrapper_p->u.class_prop.u.value);
ecma_bytecode_deref (root_module_p->compiled_code_p);
ecma_module_cleanup (root_module_p);
break;
}
#endif /* ENABLED (JERRY_MODULE_SYSTEM) */
default:
{
/* The undefined id represents an uninitialized class. */
jerry-core/ecma/base/ecma-globals.h
+8
View File
@@ -1059,6 +1059,14 @@ typedef struct
#endif /* ENABLED (JERRY_SNAPSHOT_EXEC) */
#if ENABLED (JERRY_ESNEXT)
/**
* Flags for runnable objects.
*/
typedef enum
{
ECMA_RUNNABLE_FLAGS_EMPTY = (0), /**< empty flags */
ECMA_RUNNABLE_FLAGS_MODULE = (1 << 0) /**< runnable is a module */
} ecma_runnable_flags_t;
/**
* Description of arrow function objects.
jerry-core/ecma/base/ecma-module.c
+243 -175
View File
@@ -37,8 +37,9 @@
* @return pointer to ecma_string_t containing the normalized and zero terminated path
*/
ecma_string_t *
ecma_module_create_normalized_path (const uint8_t *char_p, /**< module specifier */
prop_length_t size) /**< size of module specifier */
ecma_module_create_normalized_path (const lit_utf8_byte_t *char_p, /**< module path specifier */
lit_utf8_size_t size, /**< size of module specifier */
ecma_string_t *const base_path_p) /**< base path for the module specifier */
{
JERRY_ASSERT (size > 0);
ecma_string_t *ret_p = NULL;
@@ -57,16 +58,13 @@ ecma_module_create_normalized_path (const uint8_t *char_p, /**< module specifier
lit_utf8_byte_t *module_path_p = NULL;
lit_utf8_size_t module_path_size = 0;
/* Check if we have a current module, and use its path as the base path. */
JERRY_ASSERT (JERRY_CONTEXT (module_top_context_p) != NULL);
if (JERRY_CONTEXT (module_top_context_p)->module_p != NULL)
if (base_path_p != NULL)
{
JERRY_ASSERT (JERRY_CONTEXT (module_top_context_p)->module_p->path_p != NULL);
module_path_size = ecma_string_get_size (JERRY_CONTEXT (module_top_context_p)->module_p->path_p);
module_path_size = ecma_string_get_size (base_path_p);
module_path_p = (lit_utf8_byte_t *) jmem_heap_alloc_block (module_path_size + 1);
lit_utf8_size_t module_utf8_size;
module_utf8_size = ecma_string_copy_to_utf8_buffer (JERRY_CONTEXT (module_top_context_p)->module_p->path_p,
module_utf8_size = ecma_string_copy_to_utf8_buffer (base_path_p,
module_path_p,
module_path_size);
@@ -96,26 +94,39 @@ ecma_module_create_normalized_path (const uint8_t *char_p, /**< module specifier
} /* ecma_module_create_normalized_path */
/**
* Find a module with a specific identifier
* Push a new module into the module list. New modules are inserted after the head module, this way in the end the
* root module remains the first in the list.
*/
static void
ecma_module_list_push (ecma_module_t *module_p)
{
ecma_module_t *head_p = JERRY_CONTEXT (module_list_p);
module_p->next_p = head_p->next_p;
head_p->next_p = module_p;
} /* ecma_module_list_push */
/**
* Lookup a module with a specific identifier.
*
* @return pointer to ecma_module_t, if found
* NULL, otherwise
*/
ecma_module_t *
ecma_module_find_module (ecma_string_t *const path_p) /**< module identifier */
static ecma_module_t *
ecma_module_list_lookup (ecma_string_t *const path_p) /**< module identifier */
{
ecma_module_t *current_p = JERRY_CONTEXT (ecma_modules_p);
ecma_module_t *current_p = JERRY_CONTEXT (module_list_p);
while (current_p != NULL)
{
if (ecma_compare_ecma_strings (path_p, current_p->path_p))
{
return current_p;
}
current_p = current_p->next_p;
}
return current_p;
} /* ecma_module_find_module */
return NULL;
} /* ecma_module_list_lookup */
/**
* Create a new module
@@ -129,8 +140,7 @@ ecma_module_create_module (ecma_string_t *const path_p) /**< module identifier *
memset (module_p, 0, sizeof (ecma_module_t));
module_p->path_p = path_p;
module_p->next_p = JERRY_CONTEXT (ecma_modules_p);
JERRY_CONTEXT (ecma_modules_p) = module_p;
ecma_module_list_push (module_p);
return module_p;
} /* ecma_module_create_module */
@@ -140,9 +150,10 @@ ecma_module_create_module (ecma_string_t *const path_p) /**< module identifier *
* @return pointer to found or newly created module structure
*/
ecma_module_t *
ecma_module_find_or_create_module (ecma_string_t *const path_p) /**< module path */
ecma_module_find_module (ecma_string_t *const path_p) /**< module path */
{
ecma_module_t *module_p = ecma_module_find_module (path_p);
ecma_module_t *module_p = ecma_module_list_lookup (path_p);
if (module_p)
{
ecma_deref_ecma_string (path_p);
@@ -150,7 +161,7 @@ ecma_module_find_or_create_module (ecma_string_t *const path_p) /**< module path
}
return ecma_module_create_module (path_p);
} /* ecma_module_find_or_create_module */
} /* ecma_module_find_module */
/**
* Create a new native module
@@ -158,28 +169,83 @@ ecma_module_find_or_create_module (ecma_string_t *const path_p) /**< module path
* @return pointer to created module
*/
ecma_module_t *
ecma_module_create_native_module (ecma_string_t *const path_p, /**< module identifier */
ecma_object_t *const namespace_p) /**< module namespace */
ecma_module_find_native_module (ecma_string_t *const path_p)
{
ecma_module_t *module_p = ecma_module_create_module (path_p);
module_p->state = ECMA_MODULE_STATE_NATIVE;
module_p->namespace_object_p = namespace_p;
return module_p;
} /* ecma_module_create_native_module */
ecma_module_t *module_p = ecma_module_list_lookup (path_p);
if (module_p != NULL)
{
return module_p;
}
ecma_value_t native = jerry_port_get_native_module (ecma_make_string_value (path_p));
if (!ecma_is_value_undefined (native))
{
JERRY_ASSERT (ecma_is_value_object (native));
module_p = ecma_module_create_module (path_p);
module_p->state = ECMA_MODULE_STATE_NATIVE;
module_p->namespace_object_p = ecma_get_object_from_value (native);
return module_p;
}
return NULL;
} /* ecma_module_find_native_module */
/**
* Creates a module context.
*
* @return pointer to created module context
* Initialize context variables for the root module.
*/
static ecma_module_context_t *
ecma_module_create_module_context (void)
void
ecma_module_initialize_context (ecma_string_t *root_path_p) /**< root module */
{
ecma_module_context_t *context_p = (ecma_module_context_t *) jmem_heap_alloc_block (sizeof (ecma_module_context_t));
memset (context_p, 0, sizeof (ecma_module_context_t));
JERRY_ASSERT (JERRY_CONTEXT (module_current_p) == NULL);
JERRY_ASSERT (JERRY_CONTEXT (module_list_p) == NULL);
return context_p;
} /* ecma_module_create_module_context */
lit_utf8_size_t path_str_size;
uint8_t flags = ECMA_STRING_FLAG_EMPTY;
const lit_utf8_byte_t *path_str_chars_p = ecma_string_get_chars (root_path_p,
&path_str_size,
NULL,
NULL,
&flags);
ecma_string_t *path_p = ecma_module_create_normalized_path (path_str_chars_p,
path_str_size,
NULL);
if (path_p == NULL)
{
ecma_ref_ecma_string (root_path_p);
path_p = root_path_p;
}
ecma_module_t *module_p = (ecma_module_t *) jmem_heap_alloc_block (sizeof (ecma_module_t));
memset (module_p, 0, sizeof (ecma_module_t));
module_p->path_p = path_p;
/* Root modules are handled differently then the rest of the referenced modules, as the scope and compiled code
* are handled separately. */
module_p->state = ECMA_MODULE_STATE_ROOT;
JERRY_CONTEXT (module_current_p) = module_p;
JERRY_CONTEXT (module_list_p) = module_p;
} /* ecma_module_initialize_context */
/**
* cleanup context variables for the root module.
*/
void
ecma_module_cleanup_context (void)
{
ecma_module_cleanup (JERRY_CONTEXT (module_current_p));
#ifndef JERRY_NDEBUG
JERRY_CONTEXT (module_current_p) = NULL;
JERRY_CONTEXT (module_list_p) = NULL;
#endif /* JERRY_NDEBUG */
} /* ecma_module_cleanup_context */
/**
* Inserts a {module, export_name} record into a resolve set.
@@ -190,8 +256,8 @@ ecma_module_create_module_context (void)
*/
bool
ecma_module_resolve_set_insert (ecma_module_resolve_set_t **set_p, /**< [in, out] resolve set */
ecma_module_t * const module_p, /**< module */
ecma_string_t * const export_name_p) /**< export name */
ecma_module_t *const module_p, /**< module */
ecma_string_t *const export_name_p) /**< export name */
{
JERRY_ASSERT (set_p != NULL);
ecma_module_resolve_set_t *current_p = *set_p;
@@ -283,8 +349,8 @@ ecma_module_resolve_stack_pop (ecma_module_resolve_stack_t **stack_p) /**< [in,
* ECMA_VALUE_EMPTY - otherwise
*/
static ecma_value_t
ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
ecma_string_t * const export_name_p, /**< export name */
ecma_module_resolve_export (ecma_module_t *const module_p, /**< base module */
ecma_string_t *const export_name_p, /**< export name */
ecma_module_record_t *out_record_p) /**< [out] found module record */
{
ecma_module_resolve_set_t *resolve_set_p = NULL;
@@ -302,7 +368,6 @@ ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
ecma_module_t *current_module_p = current_frame_p->module_p;
JERRY_ASSERT (current_module_p->state >= ECMA_MODULE_STATE_PARSED);
ecma_module_context_t *context_p = current_module_p->context_p;
ecma_string_t *current_export_name_p = current_frame_p->export_name_p;
if (!current_frame_p->resolving)
@@ -341,11 +406,11 @@ ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
continue;
}
if (context_p->local_exports_p != NULL)
if (current_module_p->local_exports_p != NULL)
{
/* 15.2.1.16.3 / 4 */
JERRY_ASSERT (context_p->local_exports_p->next_p == NULL);
ecma_module_names_t *export_names_p = context_p->local_exports_p->module_names_p;
JERRY_ASSERT (current_module_p->local_exports_p->next_p == NULL);
ecma_module_names_t *export_names_p = current_module_p->local_exports_p->module_names_p;
while (export_names_p != NULL)
{
if (ecma_compare_ecma_strings (current_export_name_p, export_names_p->imex_name_p))
@@ -377,7 +442,7 @@ ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
}
/* 15.2.1.16.3 / 5 */
ecma_module_node_t *indirect_export_p = context_p->indirect_exports_p;
ecma_module_node_t *indirect_export_p = current_module_p->indirect_exports_p;
while (indirect_export_p != NULL)
{
ecma_module_names_t *export_names_p = indirect_export_p->module_names_p;
@@ -389,6 +454,7 @@ ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
ecma_module_resolve_stack_push (&stack_p,
indirect_export_p->module_request_p,
export_names_p->local_name_p);
break;
}
export_names_p = export_names_p->next_p;
@@ -432,7 +498,7 @@ ecma_module_resolve_export (ecma_module_t * const module_p, /**< base module */
ecma_module_resolve_stack_pop (&stack_p);
/* 15.2.1.16.3 / 10 */
ecma_module_node_t *star_export_p = context_p->star_exports_p;
ecma_module_node_t *star_export_p = current_module_p->star_exports_p;
while (star_export_p != NULL)
{
JERRY_ASSERT (star_export_p->module_names_p == NULL);
@@ -493,12 +559,9 @@ ecma_module_evaluate (ecma_module_t *module_p) /**< module */
module_p->state = ECMA_MODULE_STATE_EVALUATING;
module_p->scope_p = ecma_create_decl_lex_env (ecma_get_global_environment (global_object_p));
module_p->context_p->parent_p = JERRY_CONTEXT (module_top_context_p);
JERRY_CONTEXT (module_top_context_p) = module_p->context_p;
ecma_value_t ret_value;
ret_value = vm_run_module (module_p->compiled_code_p,
module_p->scope_p);
ret_value = vm_run_module (module_p);
if (!ECMA_IS_VALUE_ERROR (ret_value))
{
@@ -506,10 +569,11 @@ ecma_module_evaluate (ecma_module_t *module_p) /**< module */
ret_value = ECMA_VALUE_EMPTY;
}
JERRY_CONTEXT (module_top_context_p) = module_p->context_p->parent_p;
ecma_bytecode_deref (module_p->compiled_code_p);
module_p->state = ECMA_MODULE_STATE_EVALUATED;
ecma_bytecode_deref (module_p->compiled_code_p);
#ifndef JERRY_NDEBUG
module_p->compiled_code_p = NULL;
#endif /* JERRY_NDEBUG */
return ret_value;
} /* ecma_module_evaluate */
@@ -597,7 +661,6 @@ ecma_module_create_namespace_object (ecma_module_t *module_p) /**< module */
{
ecma_module_resolve_stack_t *current_frame_p = stack_p;
ecma_module_t *current_module_p = current_frame_p->module_p;
ecma_module_context_t *context_p = current_module_p->context_p;
ecma_module_resolve_stack_pop (&stack_p);
@@ -617,11 +680,11 @@ ecma_module_create_namespace_object (ecma_module_t *module_p) /**< module */
break;
}
if (context_p->local_exports_p != NULL)
if (current_module_p->local_exports_p != NULL)
{
/* 15.2.1.16.2 / 5 */
JERRY_ASSERT (context_p->local_exports_p->next_p == NULL);
ecma_module_names_t *export_names_p = context_p->local_exports_p->module_names_p;
JERRY_ASSERT (current_module_p->local_exports_p->next_p == NULL);
ecma_module_names_t *export_names_p = current_module_p->local_exports_p->module_names_p;
while (export_names_p != NULL && ecma_is_value_empty (result))
{
result = ecma_module_namespace_object_add_export_if_needed (module_p,
@@ -631,7 +694,7 @@ ecma_module_create_namespace_object (ecma_module_t *module_p) /**< module */
}
/* 15.2.1.16.2 / 6 */
ecma_module_node_t *indirect_export_p = context_p->indirect_exports_p;
ecma_module_node_t *indirect_export_p = current_module_p->indirect_exports_p;
while (indirect_export_p != NULL && ecma_is_value_empty (result))
{
ecma_module_names_t *export_names_p = indirect_export_p->module_names_p;
@@ -645,7 +708,7 @@ ecma_module_create_namespace_object (ecma_module_t *module_p) /**< module */
}
/* 15.2.1.16.2 / 7 */
ecma_module_node_t *star_export_p = context_p->star_exports_p;
ecma_module_node_t *star_export_p = current_module_p->star_exports_p;
while (star_export_p != NULL && ecma_is_value_empty (result))
{
JERRY_ASSERT (star_export_p->module_names_p == NULL);
@@ -670,20 +733,18 @@ ecma_module_create_namespace_object (ecma_module_t *module_p) /**< module */
} /* ecma_module_create_namespace_object */
/**
* Connects imported values to the current context.
* Connects imported values to the current module scope.
*
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
static ecma_value_t
ecma_module_connect_imports (void)
ecma_module_connect_imports (ecma_module_t *module_p)
{
ecma_module_context_t *current_context_p = JERRY_CONTEXT (module_top_context_p);
ecma_object_t *local_env_p = current_context_p->module_p->scope_p;
ecma_object_t *local_env_p = module_p->scope_p;
JERRY_ASSERT (ecma_is_lexical_environment (local_env_p));
ecma_module_node_t *import_node_p = current_context_p->imports_p;
ecma_module_node_t *import_node_p = module_p->imports_p;
/* Check that the imported bindings don't exist yet. */
while (import_node_p != NULL)
@@ -728,7 +789,7 @@ ecma_module_connect_imports (void)
import_node_p = import_node_p->next_p;
}
import_node_p = current_context_p->imports_p;
import_node_p = module_p->imports_p;
/* Resolve imports and create local bindings. */
while (import_node_p != NULL)
@@ -823,6 +884,48 @@ ecma_module_connect_imports (void)
return ECMA_VALUE_EMPTY;
} /* ecma_module_connect_imports */
/**
* Checks if indirect exports in the current context are resolvable.
* Note: See 15.2.1.16.4 / 9.
*
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
static ecma_value_t
ecma_module_check_indirect_exports (ecma_module_t *module_p)
{
ecma_module_node_t *indirect_export_p = module_p->indirect_exports_p;
while (indirect_export_p != NULL)
{
ecma_module_names_t *name_p = indirect_export_p->module_names_p;
while (name_p != NULL)
{
ecma_module_record_t record;
ecma_value_t result = ecma_module_resolve_export (indirect_export_p->module_request_p,
name_p->local_name_p,
&record);
if (ECMA_IS_VALUE_ERROR (result))
{
return result;
}
JERRY_ASSERT (ecma_is_value_empty (result));
if (record.module_p == NULL)
{
return ecma_raise_syntax_error (ECMA_ERR_MSG ("Ambiguous indirect export request."));
}
name_p = name_p->next_p;
}
indirect_export_p = indirect_export_p->next_p;
}
return ECMA_VALUE_EMPTY;
} /* ecma_module_check_indirect_exports */
/**
* Initialize the current module by creating the local binding for the imported variables
* and verifying indirect exports.
@@ -831,17 +934,42 @@ ecma_module_connect_imports (void)
* ECMA_VALUE_EMPTY - otherwise
*/
ecma_value_t
ecma_module_initialize_current (void)
ecma_module_initialize (ecma_module_t *module_p) /**< module */
{
ecma_value_t ret_value = ecma_module_connect_imports ();
ecma_value_t ret_value = ecma_module_connect_imports (module_p);
if (ecma_is_value_empty (ret_value))
{
ret_value = ecma_module_check_indirect_exports ();
ret_value = ecma_module_check_indirect_exports (module_p);
}
return ret_value;
} /* ecma_module_initialize_current */
} /* ecma_module_initialize */
static ecma_value_t ecma_module_parse (ecma_module_t *module_p);
/**
* Parses all referenced modules.
*
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
ecma_value_t
ecma_module_parse_referenced_modules (void)
{
ecma_module_t *current_p = JERRY_CONTEXT (module_list_p);
while (current_p != NULL)
{
if (ECMA_IS_VALUE_ERROR (ecma_module_parse (current_p)))
{
return ECMA_VALUE_ERROR;
}
current_p = current_p->next_p;
}
return ECMA_VALUE_EMPTY;
} /* ecma_module_parse_referenced_modules */
/**
* Parses an EcmaScript module.
@@ -849,7 +977,7 @@ ecma_module_initialize_current (void)
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
static jerry_value_t
static ecma_value_t
ecma_module_parse (ecma_module_t *module_p) /**< module */
{
if (module_p->state >= ECMA_MODULE_STATE_PARSING)
@@ -858,7 +986,6 @@ ecma_module_parse (ecma_module_t *module_p) /**< module */
}
module_p->state = ECMA_MODULE_STATE_PARSING;
module_p->context_p = ecma_module_create_module_context ();
lit_utf8_size_t module_path_size = ecma_string_get_size (module_p->path_p);
lit_utf8_byte_t *module_path_p = (lit_utf8_byte_t *) jmem_heap_alloc_block (module_path_size + 1);
@@ -878,9 +1005,8 @@ ecma_module_parse (ecma_module_t *module_p) /**< module */
return ecma_raise_syntax_error (ECMA_ERR_MSG ("File not found."));
}
module_p->context_p->module_p = module_p;
module_p->context_p->parent_p = JERRY_CONTEXT (module_top_context_p);
JERRY_CONTEXT (module_top_context_p) = module_p->context_p;
ecma_module_t *prev_module_p = JERRY_CONTEXT (module_current_p);
JERRY_CONTEXT (module_current_p) = module_p;
#if ENABLED (JERRY_DEBUGGER) && ENABLED (JERRY_PARSER)
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
@@ -899,8 +1025,7 @@ ecma_module_parse (ecma_module_t *module_p) /**< module */
ecma_make_string_value (module_p->path_p),
ECMA_PARSE_STRICT_MODE | ECMA_PARSE_MODULE);
JERRY_CONTEXT (module_top_context_p) = module_p->context_p->parent_p;
JERRY_CONTEXT (module_current_p) = prev_module_p;
jerry_port_release_source (source_p);
if (JERRY_UNLIKELY (bytecode_p == NULL))
@@ -908,78 +1033,18 @@ ecma_module_parse (ecma_module_t *module_p) /**< module */
return ECMA_VALUE_ERROR;
}
if (ECMA_IS_VALUE_ERROR (ecma_module_parse_referenced_modules ()))
{
ecma_bytecode_deref (bytecode_p);
return ECMA_VALUE_ERROR;
}
module_p->compiled_code_p = bytecode_p;
module_p->state = ECMA_MODULE_STATE_PARSED;
return ECMA_VALUE_EMPTY;
} /* ecma_module_parse */
/**
* Parses all referenced modules.
*
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
ecma_value_t
ecma_module_parse_modules (void)
{
ecma_module_t *current_p = JERRY_CONTEXT (ecma_modules_p);
while (current_p != NULL)
{
ecma_value_t ret_value = ecma_module_parse (current_p);
if (ECMA_IS_VALUE_ERROR (ret_value))
{
return ret_value;
}
JERRY_ASSERT (ecma_is_value_empty (ret_value));
current_p = current_p->next_p;
}
return ECMA_VALUE_EMPTY;
} /* ecma_module_parse_modules */
/**
* Checks if indirect exports in the current context are resolvable.
* Note: See 15.2.1.16.4 / 9.
*
* @return ECMA_VALUE_ERROR - if an error occured
* ECMA_VALUE_EMPTY - otherwise
*/
ecma_value_t
ecma_module_check_indirect_exports (void)
{
ecma_module_node_t *indirect_export_p = JERRY_CONTEXT (module_top_context_p)->indirect_exports_p;
while (indirect_export_p != NULL)
{
ecma_module_names_t *name_p = indirect_export_p->module_names_p;
while (name_p != NULL)
{
ecma_module_record_t record;
ecma_value_t result = ecma_module_resolve_export (indirect_export_p->module_request_p,
name_p->local_name_p,
&record);
if (ECMA_IS_VALUE_ERROR (result))
{
return result;
}
if (record.module_p == NULL)
{
return ecma_raise_syntax_error (ECMA_ERR_MSG ("Ambiguous indirect export request."));
}
name_p = name_p->next_p;
}
indirect_export_p = indirect_export_p->next_p;
}
return ECMA_VALUE_EMPTY;
} /* ecma_module_check_indirect_exports */
/**
* Cleans up a list of module names.
*/
@@ -1016,52 +1081,60 @@ ecma_module_release_module_nodes (ecma_module_node_t *module_node_p) /**< first
} /* ecma_module_release_module_nodes */
/**
* Cleans up a module context.
*/
static void
ecma_module_release_module_context (ecma_module_context_t *module_context_p) /**< modle context */
{
ecma_module_release_module_nodes (module_context_p->imports_p);
ecma_module_release_module_nodes (module_context_p->local_exports_p);
ecma_module_release_module_nodes (module_context_p->indirect_exports_p);
ecma_module_release_module_nodes (module_context_p->star_exports_p);
jmem_heap_free_block (module_context_p, sizeof (ecma_module_context_t));
} /* ecma_module_release_module_context */
/**
* Cleans up a module structure.
* Cleans up and releases a module structure including all referenced modules.
*/
static void
ecma_module_release_module (ecma_module_t *module_p) /**< module */
{
ecma_module_state_t state = module_p->state;
ecma_deref_ecma_string (module_p->path_p);
#ifndef JERRY_NDEBUG
module_p->path_p = NULL;
#endif /* JERRY_NDEBUG */
if (module_p->namespace_object_p != NULL)
{
/* The module structure keeps a strong reference to the namespace object, which will require an extra GC call. */
JERRY_CONTEXT (ecma_gc_new_objects)++;
ecma_deref_object (module_p->namespace_object_p);
#ifndef JERRY_NDEBUG
module_p->namespace_object_p = NULL;
#endif /* JERRY_NDEBUG */
}
if (module_p->state == ECMA_MODULE_STATE_NATIVE)
if (state == ECMA_MODULE_STATE_NATIVE)
{
goto finished;
}
if (module_p->state >= ECMA_MODULE_STATE_PARSING)
if (state >= ECMA_MODULE_STATE_PARSING)
{
ecma_module_release_module_context (module_p->context_p);
ecma_module_release_module_nodes (module_p->imports_p);
ecma_module_release_module_nodes (module_p->local_exports_p);
ecma_module_release_module_nodes (module_p->indirect_exports_p);
ecma_module_release_module_nodes (module_p->star_exports_p);
}
if (module_p->state >= ECMA_MODULE_STATE_EVALUATING
&& module_p->scope_p != NULL)
if (state == ECMA_MODULE_STATE_ROOT)
{
goto finished;
}
if (state >= ECMA_MODULE_STATE_EVALUATING)
{
/* The module structure keeps a strong reference to the module scope, which will require an extra GC call. */
JERRY_CONTEXT (ecma_gc_new_objects)++;
ecma_deref_object (module_p->scope_p);
}
if (module_p->state >= ECMA_MODULE_STATE_PARSED
&& module_p->state < ECMA_MODULE_STATE_EVALUATED)
if (state >= ECMA_MODULE_STATE_PARSED
&& state < ECMA_MODULE_STATE_EVALUATED)
{
ecma_bytecode_deref (module_p->compiled_code_p);
#ifndef JERRY_NDEBUG
module_p->compiled_code_p = NULL;
#endif /* JERRY_NDEBUG */
}
finished:
@@ -1069,21 +1142,16 @@ finished:
} /* ecma_module_release_module */
/**
* Cleans up all modules if the current context is the root context.
* Cleans up and releases a module list.
*/
void
ecma_module_cleanup (void)
ecma_module_cleanup (ecma_module_t *head_p) /**< module */
{
ecma_module_t *current_p = JERRY_CONTEXT (ecma_modules_p);
while (current_p != NULL)
while (head_p != NULL)
{
ecma_module_t *next_p = current_p->next_p;
ecma_module_release_module (current_p);
current_p = next_p;
ecma_module_t *next_p = head_p->next_p;
ecma_module_release_module (head_p);
head_p = next_p;
}
JERRY_CONTEXT (ecma_modules_p) = NULL;
JERRY_CONTEXT (module_top_context_p) = NULL;
} /* ecma_module_cleanup */
#endif /* ENABLED (JERRY_MODULE_SYSTEM) */
jerry-core/ecma/base/ecma-module.h
+38 -46
View File
@@ -16,11 +16,11 @@
#ifndef ECMA_MODULE_H
#define ECMA_MODULE_H
#if ENABLED (JERRY_MODULE_SYSTEM)
#include "common.h"
#include "ecma-globals.h"
#if ENABLED (JERRY_MODULE_SYSTEM)
#define ECMA_MODULE_MAX_PATH 255u
/**
@@ -35,31 +35,6 @@ typedef struct ecma_module_names
ecma_string_t *local_name_p; /**< Local name of the item */
} ecma_module_names_t;
typedef struct ecma_module ecma_module_t;
/**
* Module node to store imports / exports.
*/
typedef struct ecma_module_node
{
struct ecma_module_node *next_p; /**< next linked list node */
ecma_module_names_t *module_names_p; /**< names of the requested import/export node */
ecma_module_t *module_request_p; /**< module structure of the requested module */
} ecma_module_node_t;
/**
* Module context containing all import and export nodes.
*/
typedef struct ecma_module_context
{
struct ecma_module_context *parent_p; /**< parent context */
ecma_module_node_t *imports_p; /**< import item of the current context */
ecma_module_node_t *local_exports_p; /**< export item of the current context */
ecma_module_node_t *indirect_exports_p; /**< export item of the current context */
ecma_module_node_t *star_exports_p; /**< export item of the current context */
ecma_module_t *module_p; /**< module request */
} ecma_module_context_t;
/**
* An enum identifing the current state of the module
*/
@@ -71,21 +46,36 @@ typedef enum
ECMA_MODULE_STATE_EVALUATING = 3, /**< module is currently being evaluated */
ECMA_MODULE_STATE_EVALUATED = 4, /**< module has been evaluated */
ECMA_MODULE_STATE_NATIVE = 5, /**< module is native */
ECMA_MODULE_STATE_ROOT = 6, /**< module is a root module */
} ecma_module_state_t;
/**
* Module structure storing an instance of a module
*/
struct ecma_module
typedef struct ecma_module
{
struct ecma_module *next_p; /**< next linked list node */
ecma_module_state_t state; /**< state of the mode */
ecma_string_t *path_p; /**< path of the module */
ecma_module_context_t *context_p; /**< module context of the module */
ecma_compiled_code_t *compiled_code_p; /**< compiled code of the module */
ecma_object_t *scope_p; /**< lexica lenvironment of the module */
ecma_object_t *namespace_object_p; /**< namespace import object of the module */
};
/* TODO(dbatyai): These could be compressed pointers */
struct ecma_module *next_p; /**< next module in the list */
struct ecma_module_node *imports_p; /**< import requests of the module */
struct ecma_module_node *local_exports_p; /**< local exports of the module */
struct ecma_module_node *indirect_exports_p; /**< indirect exports of the module */
struct ecma_module_node *star_exports_p; /**< star exports of the module*/
ecma_string_t *path_p; /**< path of the module */
ecma_compiled_code_t *compiled_code_p; /**< compiled code for the module */
ecma_object_t *scope_p; /**< lexical lenvironment of the module */
ecma_object_t *namespace_object_p; /**< namespace object of the module */
ecma_module_state_t state; /**< evaluation state of the module */
} ecma_module_t;
/**
* Module node to store imports / exports.
*/
typedef struct ecma_module_node
{
struct ecma_module_node *next_p; /**< next linked list node */
ecma_module_names_t *module_names_p; /**< names of the requested import/export node */
ecma_module_t *module_request_p; /**< module structure of the requested module */
} ecma_module_node_t;
/**
* A record that can be used to store {module, identifier} pairs
@@ -126,19 +116,21 @@ void ecma_module_resolve_stack_push (ecma_module_resolve_stack_t **stack_p,
ecma_string_t *const export_name_p);
void ecma_module_resolve_stack_pop (ecma_module_resolve_stack_t **stack_p);
ecma_string_t *ecma_module_create_normalized_path (const uint8_t *char_p,
prop_length_t size);
ecma_module_t *ecma_module_find_module (ecma_string_t *const path_p);
ecma_module_t *ecma_module_create_native_module (ecma_string_t *const path_p,
ecma_object_t *const namespace_p);
ecma_module_t *ecma_module_find_or_create_module (ecma_string_t *const path_p);
ecma_string_t *ecma_module_create_normalized_path (const lit_utf8_byte_t *char_p,
lit_utf8_size_t size,
ecma_string_t *const base_path_p);
ecma_value_t ecma_module_initialize_current (void);
ecma_value_t ecma_module_parse_modules (void);
ecma_value_t ecma_module_check_indirect_exports (void);
ecma_module_t *ecma_module_find_module (ecma_string_t *const path_p);
ecma_module_t *ecma_module_find_native_module (ecma_string_t *const path_p);
ecma_value_t ecma_module_parse_referenced_modules (void);
ecma_value_t ecma_module_initialize (ecma_module_t *module_p);
void ecma_module_initialize_context (ecma_string_t *root_path_p);
void ecma_module_cleanup_context (void);
void ecma_module_release_module_nodes (ecma_module_node_t *module_node_p);
void ecma_module_cleanup (void);
void ecma_module_cleanup (ecma_module_t *head_p);
#endif /* ENABLED (JERRY_MODULE_SYSTEM) */
#endif /* !ECMA_MODULE_H */