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Part I: Implement ES2015 module system. (#2599)

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JerryScript-DCO-1.0-Signed-off-by: Daniel Vince vinced@inf.u-szeged.hu
This commit is contained in:
Daniel Vince
2019-03-18 16:22:06 +01:00
committed by László Langó
parent 3d3e6fdf58
commit 4123f35a3b
45 changed files with 2095 additions and 8 deletions
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jerry-core/parser/js/js-parser-internal.h
+90
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@@ -296,6 +296,59 @@ typedef struct
#endif /* JERRY_DEBUGGER */
#ifndef CONFIG_DISABLE_ES2015_MODULE_SYSTEM
/**
* String struct for storing the module path.
*/
typedef struct parser_module_utf8_string
{
uint8_t *value_p; /**< string value stored as uint8_t */
prop_length_t length; /**< length of the string */
} parser_module_utf8_string_t;
/**
* Imported or exported names, for example:
* import { v as x } from "module";
* exported name: v
* imported name: x
* export x as v;
* exported variable: x
* exported as: v
* Reference: https://www.ecma-international.org/ecma-262/6.0/#table-41
*/
typedef struct parser_module_names
{
ecma_string_t *import_name_p; /**< local name of the import - export item */
ecma_string_t *local_name_p; /**< import name of the import - export item */
struct parser_module_names *next_p; /**< next linked list node */
} parser_module_names_t;
/**
* Module node to store imports / exports.
*/
typedef struct parser_module_node
{
parser_module_names_t *module_names_p; /**< names of the requested imports - exports */
uint16_t module_request_count; /**< count of the requested imports - exports */
parser_module_utf8_string_t script_path; /**< path of the requested module*/
struct parser_module_node *next_p; /**< next linked list node */
} parser_module_node_t;
/**
* Module context in the parser context. It is not in the context if modules
* are not enabled during the build. It's value is NULL if there is no import /
* export in the script, otherwise it contains all the imports and exports.
*/
typedef struct
{
parser_module_node_t *imports_p; /**< import item of the current context */
parser_module_node_t *exports_p; /**< export item of the current context */
} parser_module_context_t;
#endif /* !CONFIG_DISABLE_ES2015_MODULE_SYSTEM */
/**
* Those members of a context which needs
* to be saved when a sub-function is parsed.
@@ -342,6 +395,11 @@ typedef struct
parser_saved_context_t *last_context_p; /**< last saved context */
parser_stack_iterator_t last_statement; /**< last statement position */
#ifndef CONFIG_DISABLE_ES2015_MODULE_SYSTEM
parser_module_context_t *module_context_p; /**< shared module context inside the parser */
parser_module_node_t *module_current_node_p; /**< import / export node that is being processed */
#endif /* !CONFIG_DISABLE_ES2015_MODULE_SYSTEM */
/* Lexer members. */
lexer_token_t token; /**< current token */
lexer_lit_object_t lit_object; /**< current literal object */
@@ -548,6 +606,38 @@ void parser_scan_until (parser_context_t *context_p, lexer_range_t *range_p, lex
void parser_parse_statements (parser_context_t *context_p);
void parser_free_jumps (parser_stack_iterator_t iterator);
#ifndef CONFIG_DISABLE_ES2015_MODULE_SYSTEM
/**
* @}
*
* \addtogroup jsparser_stmt Module statement parser
* @{
*/
void parser_module_add_export_node_to_context (parser_context_t *context_p);
void parser_module_add_import_node_to_context (parser_context_t *context_p);
void parser_module_check_request_place (parser_context_t *context_p);
void parser_module_context_cleanup (parser_context_t *context_p);
void parser_module_context_init (parser_context_t *context_p);
void parser_module_free_saved_names (parser_module_node_t *module_node_p);
void parser_module_handle_from_clause (parser_context_t *context_p);
void parser_module_handle_requests (parser_context_t *context_p);
void parser_module_partial_cleanup_on_error (parser_module_node_t *module_node_p);
void parser_module_parse_export_item_list (parser_context_t *context_p);
void parser_module_parse_import_item_list (parser_context_t *context_p);
parser_module_node_t *parser_module_create_module_node (parser_context_t *context_p,
parser_module_node_t *template_node_p);
parser_module_node_t *parser_module_get_export_node (parser_context_t *context_p);
void parser_module_add_item_to_node (parser_context_t *context_p,
parser_module_node_t *module_node_p,
lexer_literal_t *import_name_p,
lexer_literal_t *local_name_p,
bool is_import_item);
#endif /* !CONFIG_DISABLE_ES2015_MODULE_SYSTEM */
/**
* @}
*