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Implement ES2015 class feature (part II.) (#2439)

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

Supported:
 - Single class inheritance
 - Functionality of 'super' keyword
 - Implicit constructor in class heritage
 - Specific behaviour while extending with the built-in 'Array' or '%TypedArray%' object
 - Abstract subclasses (Mix-ins)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2018-10-25 16:00:48 +02:00
committed by Akos Kiss
parent e0e6363f85
commit d1860d0e34
54 changed files with 2543 additions and 199 deletions
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jerry-core/ecma/operations/ecma-reference.c
+35 -4
View File
@@ -59,6 +59,29 @@ ecma_op_resolve_reference_base (ecma_object_t *lex_env_p, /**< starting lexical
return NULL;
} /* ecma_op_resolve_reference_base */
#ifndef CONFIG_DISABLE_ES2015_CLASS
/**
* Resolve super reference.
*
* @return value of the reference
*/
ecma_object_t *
ecma_op_resolve_super_reference_value (ecma_object_t *lex_env_p) /**< starting lexical environment */
{
while (true)
{
JERRY_ASSERT (lex_env_p != NULL);
if (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_SUPER_OBJECT_BOUND)
{
return ecma_get_lex_env_binding_object (lex_env_p);
}
lex_env_p = ecma_get_lex_env_outer_reference (lex_env_p);
}
} /* ecma_op_resolve_super_reference_value */
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
/**
* Resolve value corresponding to reference.
*
@@ -72,7 +95,9 @@ ecma_op_resolve_reference_value (ecma_object_t *lex_env_p, /**< starting lexical
while (lex_env_p != NULL)
{
if (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
ecma_lexical_environment_type_t lex_env_type = ecma_get_lex_env_type (lex_env_p);
if (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
{
ecma_property_t *property_p = ecma_find_named_property (lex_env_p, name_p);
@@ -81,10 +106,8 @@ ecma_op_resolve_reference_value (ecma_object_t *lex_env_p, /**< starting lexical
return ecma_fast_copy_value (ECMA_PROPERTY_VALUE_PTR (property_p)->value);
}
}
else
else if (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND)
{
JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND);
ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
@@ -120,6 +143,14 @@ ecma_op_resolve_reference_value (ecma_object_t *lex_env_p, /**< starting lexical
return prop_value;
}
}
else
{
#ifndef CONFIG_DISABLE_ES2015_CLASS
JERRY_ASSERT (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_SUPER_OBJECT_BOUND);
#else /* CONFIG_DISABLE_ES2015_CLASS */
JERRY_UNREACHABLE ();
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
}
lex_env_p = ecma_get_lex_env_outer_reference (lex_env_p);
}