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Implement for[in/of]-let construct. (#3294)

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This patch implements let/const support for all "for" statements.
It includes an algorithm for cloning declarative lexical environments.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-11 13:53:32 +01:00
committed by Dániel Bátyai
parent 58f71e6ffa
commit da69589f05
8 changed files with 503 additions and 110 deletions
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jerry-core/ecma/base/ecma-helpers.h
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@@ -371,6 +371,7 @@ uint8_t ecma_get_object_builtin_id (ecma_object_t *object_p);
ecma_lexical_environment_type_t JERRY_ATTR_PURE ecma_get_lex_env_type (const ecma_object_t *object_p);
ecma_object_t JERRY_ATTR_PURE *ecma_get_lex_env_outer_reference (const ecma_object_t *object_p);
ecma_object_t JERRY_ATTR_PURE *ecma_get_lex_env_binding_object (const ecma_object_t *object_p);
ecma_object_t *ecma_clone_decl_lexical_environment (ecma_object_t *lex_env_p, bool copy_values);
ecma_property_value_t *
ecma_create_named_data_property (ecma_object_t *object_p, ecma_string_t *name_p, uint8_t prop_attributes,