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Implement ES2015 class feature (part I.) (#2404)

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This patch is the first milestone of the implementation of this new language element.

Currently supported:
 - Class statement
 - Class expression
 - Static methods

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2018-07-12 18:20:08 +02:00
committed by yichoi
parent 62cdb3965f
commit 43aae199ce
18 changed files with 779 additions and 15 deletions
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jerry-core/ecma/operations/ecma-function-object.c
+28 -4
View File
@@ -402,6 +402,14 @@ ecma_op_function_has_instance (ecma_object_t *func_obj_p, /**< Function object *
return ecma_make_boolean_value (result);
} /* ecma_op_function_has_instance */
#ifndef CONFIG_DISABLE_ES2015_CLASS
/**
* Indicates whether the class has been invoked with 'new'.
*/
#define ECMA_CLASS_CONSTRUCT_FLAG ((uintptr_t) 0x01u)
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
/**
* Sets the construct flag in the arguments list pointer.
*
@@ -413,8 +421,10 @@ ecma_op_function_set_construct_flag (const ecma_value_t *arguments_list_p) /**<
/* Any ecma value list must be aligned to 4 byte. */
JERRY_ASSERT ((((uintptr_t) arguments_list_p) & 0x3) == 0);
/* Currently it returns with the same pointer. When classes
* will be enabled, it will set the lowest bit. */
#ifndef CONFIG_DISABLE_ES2015_CLASS
arguments_list_p = (const ecma_value_t *)(((uintptr_t) arguments_list_p) | ECMA_CLASS_CONSTRUCT_FLAG);
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
return arguments_list_p;
} /* ecma_op_function_set_construct_flag */
@@ -426,8 +436,10 @@ ecma_op_function_set_construct_flag (const ecma_value_t *arguments_list_p) /**<
static inline const ecma_value_t * JERRY_ATTR_ALWAYS_INLINE
ecma_op_function_clear_construct_flag (const ecma_value_t *arguments_list_p) /**< modified arguments list pointer */
{
/* Currently it returns with the same pointer. When classes
* will be enabled, the lowest bit will be cleared. */
#ifndef CONFIG_DISABLE_ES2015_CLASS
arguments_list_p = (const ecma_value_t *)(((uintptr_t) arguments_list_p) & ~ECMA_CLASS_CONSTRUCT_FLAG);
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
return arguments_list_p;
} /* ecma_op_function_clear_construct_flag */
@@ -439,8 +451,12 @@ ecma_op_function_clear_construct_flag (const ecma_value_t *arguments_list_p) /**
static inline bool JERRY_ATTR_ALWAYS_INLINE
ecma_op_function_has_construct_flag (const ecma_value_t *arguments_list_p) /**< modified arguments list pointer */
{
#ifndef CONFIG_DISABLE_ES2015_CLASS
return (((uintptr_t) arguments_list_p) & ECMA_CLASS_CONSTRUCT_FLAG);
#else
JERRY_UNUSED (arguments_list_p);
return false;
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
} /* ecma_op_function_has_construct_flag */
/**
@@ -496,6 +512,14 @@ ecma_op_function_call (ecma_object_t *func_obj_p, /**< Function object */
const ecma_compiled_code_t *bytecode_data_p = ecma_op_function_get_compiled_code (ext_func_p);
#ifndef CONFIG_DISABLE_ES2015_CLASS
if (bytecode_data_p->status_flags & CBC_CODE_FLAGS_CONSTRUCTOR &&
!ecma_op_function_has_construct_flag (arguments_list_p))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Class constructor cannot be invoked without 'new'."));
}
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
is_strict = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE) ? true : false;
is_no_lex_env = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED) ? true : false;