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Fix lexical scoping between scripts (#3558)

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This change fixes the handling of lexical blocks when executing multiple
scripts, and also fixes a few issues with module environments.

After this change, all script files will run in the same context and
will have access to lexically scoped global variables of previous
scripts, and module environments will no longer have a bound global
'this' value.

The REPL implementation in main-unix is also fixed to correctly handle
lexically scoped variables.

Fixes #3561.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
This commit is contained in:
Dániel Bátyai
2020-02-21 13:30:48 +01:00
committed by GitHub
parent b0a575b049
commit 68909fc5de
22 changed files with 416 additions and 129 deletions
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jerry-core/parser/js/js-scanner-internal.h
-3
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@@ -257,9 +257,6 @@ typedef enum
SCANNER_LITERAL_POOL_BLOCK = (1 << 1), /**< literal pool represents a code block */
SCANNER_LITERAL_POOL_IS_STRICT = (1 << 2), /**< literal pool represents a strict mode code block */
SCANNER_LITERAL_POOL_NO_REG = (1 << 3), /**< variable declarations cannot be kept in registers */
#if ENABLED (JERRY_ES2015)
SCANNER_LITERAL_POOL_NO_VAR_REG = (1 << 4), /**< non let/const declarations cannot be kept in registers */
#endif /* ENABLED (JERRY_ES2015) */
SCANNER_LITERAL_POOL_NO_ARGUMENTS = (1 << 5), /**< arguments object must not be constructed */
#if ENABLED (JERRY_ES2015)
SCANNER_LITERAL_POOL_ARGUMENTS_UNMAPPED = (1 << 6), /**< arguments object should be unmapped */