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Implement the core of let/const statement. (#3239)

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This patch implements the core part of let/const statements. Redeclarations are correctly
detected and separate contexts are correctly created for these statements. Register
optimizations are also emplyed whenever possible.

Lots of features are still missing:
 - checking the var statements in eval
 - const are treated as lets
 - single statement checks are missing
 - export declarations are exported as vars, let/const export is not supported

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-10-25 18:08:10 +02:00
committed by Dániel Bátyai
parent 4b352758c1
commit 3d797b8836
33 changed files with 1997 additions and 217 deletions
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jerry-core/include/jerryscript-snapshot.h
+1 -1
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@@ -30,7 +30,7 @@ extern "C"
/**
* Jerry snapshot format version.
*/
#define JERRY_SNAPSHOT_VERSION (25u)
#define JERRY_SNAPSHOT_VERSION (26u)
/**
* Flags for jerry_generate_snapshot and jerry_generate_function_snapshot.