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Implement function destructuring argument support. (#3322)

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Furthermore create unmapped arguments objects if a function has a non-simple argument.
A few destructuring pattern issues were fixed as well.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-18 14:15:36 +01:00
committed by Dániel Bátyai
parent 359643b5b2
commit 8bdb32cc88
19 changed files with 753 additions and 202 deletions
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jerry-core/parser/js/byte-code.h
+14 -12
View File
@@ -308,6 +308,8 @@
VM_OC_INIT_LOCALS) \
CBC_OPCODE (CBC_CREATE_CONST, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_INIT_LOCALS) \
CBC_OPCODE (CBC_CREATE_DESTRUCTURED_ARG, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_NONE) \
CBC_OPCODE (CBC_INIT_LOCAL, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_INIT_LOCALS) \
CBC_OPCODE (CBC_CREATE_VAR_EVAL, CBC_HAS_LITERAL_ARG, 0, \
@@ -538,7 +540,7 @@
-1 + PARSER_SUPER_CLASS_CONTEXT_STACK_ALLOCATION, VM_OC_CLASS_HERITAGE) \
CBC_OPCODE (CBC_EXT_INITIALIZER_PUSH_PROP, CBC_NO_FLAG, 0, \
VM_OC_INITIALIZER_PUSH_PROP | VM_OC_GET_STACK) \
CBC_FORWARD_BRANCH (CBC_EXT_DEFAULT_INITIALIZER, 0, \
CBC_FORWARD_BRANCH (CBC_EXT_DEFAULT_INITIALIZER, -1, \
VM_OC_DEFAULT_INITIALIZER) \
\
/* Basic opcodes. */ \
@@ -712,21 +714,21 @@ typedef enum
CBC_CODE_FLAGS_FULL_LITERAL_ENCODING = (1u << 1), /**< full literal encoding mode is enabled */
CBC_CODE_FLAGS_UINT16_ARGUMENTS = (1u << 2), /**< compiled code data is cbc_uint16_arguments_t */
CBC_CODE_FLAGS_STRICT_MODE = (1u << 3), /**< strict mode is enabled */
CBC_CODE_FLAGS_ARGUMENTS_NEEDED = (1u << 4), /**< arguments object must be constructed */
CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED = (1u << 5), /**< no need to create a lexical environment */
CBC_CODE_FLAGS_ARROW_FUNCTION = (1u << 6), /**< this function is an arrow function */
CBC_CODE_FLAGS_STATIC_FUNCTION = (1u << 7), /**< this function is a static snapshot function */
CBC_CODE_FLAGS_DEBUGGER_IGNORE = (1u << 8), /**< this function should be ignored by debugger */
CBC_CODE_FLAGS_CONSTRUCTOR = (1u << 9), /**< this function is a constructor */
CBC_CODE_FLAGS_REST_PARAMETER = (1u << 10), /**< this function has rest parameter */
CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED = (1u << 4), /**< mapped arguments object must be constructed */
CBC_CODE_FLAGS_UNMAPPED_ARGUMENTS_NEEDED = (1u << 5), /**< mapped arguments object must be constructed */
CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED = (1u << 6), /**< no need to create a lexical environment */
CBC_CODE_FLAGS_ARROW_FUNCTION = (1u << 7), /**< this function is an arrow function */
CBC_CODE_FLAGS_STATIC_FUNCTION = (1u << 8), /**< this function is a static snapshot function */
CBC_CODE_FLAGS_DEBUGGER_IGNORE = (1u << 9), /**< this function should be ignored by debugger */
CBC_CODE_FLAGS_CONSTRUCTOR = (1u << 10), /**< this function is a constructor */
CBC_CODE_FLAGS_REST_PARAMETER = (1u << 11), /**< this function has rest parameter */
} cbc_code_flags;
/**
* Non-strict arguments object must be constructed
* Any arguments object is needed
*/
#define CBC_NON_STRICT_ARGUMENTS_NEEDED(compiled_code_p) \
(((compiled_code_p)->status_flags & CBC_CODE_FLAGS_ARGUMENTS_NEEDED) \
&& !((compiled_code_p)->status_flags & CBC_CODE_FLAGS_STRICT_MODE))
#define CBC_CODE_FLAGS_IS_ARGUMENTS_NEEDED \
(CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED | CBC_CODE_FLAGS_UNMAPPED_ARGUMENTS_NEEDED)
#define CBC_OPCODE(arg1, arg2, arg3, arg4) arg1,