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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-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 */