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Correctly handle variables imported or exported by modules. (#3270)

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Remove var declaration workarounds and correctly create / use variables for modules.

Still missing: create lexical environment for automatic module conversion.
(Or remove this feature overall.)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-04 16:51:26 +01:00
committed by Dániel Bátyai
parent 6f83da4c0b
commit ab8fa74b86
15 changed files with 279 additions and 69 deletions
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jerry-core/parser/js/js-scanner-internal.h
+5 -1
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@@ -63,7 +63,7 @@ typedef enum
*
* SCANNER_LITERAL_IS_FUNC | SCANNER_LITERAL_IS_LET : function declared in this block, might be let or var
* SCANNER_LITERAL_IS_FUNC | SCANNER_LITERAL_IS_CONST : function declared in this block, must be let
* SCANNER_LITERAL_IS_LET | SCANNER_LITERAL_IS_CONST : catch block variable
* SCANNER_LITERAL_IS_LET | SCANNER_LITERAL_IS_CONST : module import on global scope, catch block variable otherwise
*/
/**
@@ -105,6 +105,9 @@ typedef enum
#endif /* ENABLED (JERRY_ES2015) */
SCANNER_LITERAL_POOL_NO_ARGUMENTS = (1 << 4), /**< arguments object should not be constructed */
SCANNER_LITERAL_POOL_IN_WITH = (1 << 5), /**< literal pool is in a with statement */
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
SCANNER_LITERAL_POOL_IN_EXPORT = (1 << 6), /**< the declared variables are exported by the module system */
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
} scanner_literal_pool_flags_t;
/**
@@ -167,6 +170,7 @@ void scanner_append_argument (parser_context_t *context_p, scanner_context_t *sc
bool scanner_scope_find_let_declaration (parser_context_t *context_p, lexer_lit_location_t *literal_p);
void scanner_detect_invalid_var (parser_context_t *context_p, scanner_context_t *scanner_context_p,
lexer_lit_location_t *var_literal_p);
void scanner_detect_invalid_let (parser_context_t *context_p, lexer_lit_location_t *let_literal_p);
#endif /* ENABLED (JERRY_ES2015) */
void scanner_detect_eval_call (parser_context_t *context_p, scanner_context_t *scanner_context_p);