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Implement the Symbol builtin object (#2601)

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This patch contains the base functionalities that the new builtin object requires.

Currently unavailable:
 - print (Symbol('foo')) - this features requires the refactor of the print handler function
 - Several global symbol based builtin routines (follow up patch)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-01-16 10:09:23 +01:00
committed by Robert Sipka
parent 08c7183ef8
commit 7e3d688e5b
43 changed files with 1896 additions and 212 deletions
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jerry-core/ecma/base/ecma-helpers-value.c
+123 -1
View File
@@ -311,6 +311,36 @@ ecma_is_value_string (ecma_value_t value) /**< ecma value */
return ((value & (ECMA_VALUE_TYPE_MASK - 0x4)) == ECMA_TYPE_STRING);
} /* ecma_is_value_string */
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
/**
* Check if the value is symbol.
*
* @return true - if the value contains symbol value,
* false - otherwise
*/
inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
ecma_is_value_symbol (ecma_value_t value) /**< ecma value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SYMBOL);
} /* ecma_is_value_symbol */
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
/**
* Check if the value can be property name.
*
* @return true - if the value can be property name value,
* false - otherwise
*/
inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
ecma_is_value_prop_name (ecma_value_t value) /**< ecma value */
{
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
return ecma_is_value_string (value) || ecma_is_value_symbol (value);
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
return ecma_is_value_string (value);
} /* ecma_is_value_prop_name */
/**
* Check if the value is direct ecma-string.
*
@@ -383,6 +413,7 @@ ecma_check_value_type_is_spec_defined (ecma_value_t value) /**< ecma value */
|| ecma_is_value_boolean (value)
|| ecma_is_value_number (value)
|| ecma_is_value_string (value)
|| ECMA_ASSERT_VALUE_IS_SYMBOL (value)
|| ecma_is_value_object (value));
} /* ecma_check_value_type_is_spec_defined */
@@ -531,6 +562,9 @@ inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
ecma_make_string_value (const ecma_string_t *ecma_string_p) /**< string to reference in value */
{
JERRY_ASSERT (ecma_string_p != NULL);
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
JERRY_ASSERT (!ecma_prop_name_is_symbol ((ecma_string_t *) ecma_string_p));
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
if ((((uintptr_t) ecma_string_p) & ECMA_VALUE_TYPE_MASK) != 0)
{
@@ -540,6 +574,42 @@ ecma_make_string_value (const ecma_string_t *ecma_string_p) /**< string to refer
return ecma_pointer_to_ecma_value (ecma_string_p) | ECMA_TYPE_STRING;
} /* ecma_make_string_value */
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
/**
* Symbol value constructor
*
* @return ecma-value representation of the string argument
*/
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
ecma_make_symbol_value (const ecma_string_t *ecma_symbol_p) /**< symbol to reference in value */
{
JERRY_ASSERT (ecma_symbol_p != NULL);
JERRY_ASSERT (ecma_prop_name_is_symbol ((ecma_string_t *) ecma_symbol_p));
return ecma_pointer_to_ecma_value (ecma_symbol_p) | ECMA_TYPE_SYMBOL;
} /* ecma_make_symbol_value */
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
/**
* Property-name value constructor
*
* @return ecma-value representation of a property name argument
*/
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
ecma_make_prop_name_value (const ecma_string_t *ecma_prop_name_p) /**< property name to reference in value */
{
JERRY_ASSERT (ecma_prop_name_p != NULL);
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
if (ecma_prop_name_is_symbol ((ecma_string_t *) ecma_prop_name_p))
{
return ecma_make_symbol_value (ecma_prop_name_p);
}
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
return ecma_make_string_value (ecma_prop_name_p);
} /* ecma_make_prop_name_value */
/**
* String value constructor
*
@@ -660,6 +730,39 @@ ecma_get_string_from_value (ecma_value_t value) /**< ecma value */
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
} /* ecma_get_string_from_value */
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
/**
* Get pointer to ecma-string from ecma value
*
* @return the string pointer
*/
inline ecma_string_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
ecma_get_symbol_from_value (ecma_value_t value) /**< ecma value */
{
JERRY_ASSERT (ecma_is_value_symbol (value));
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
} /* ecma_get_symbol_from_value */
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
/**
* Get pointer to a property name from ecma value
*
* @return the string pointer
*/
inline ecma_string_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
ecma_get_prop_name_from_value (ecma_value_t value) /**< ecma value */
{
JERRY_ASSERT (ecma_is_value_prop_name (value));
if ((value & ECMA_VALUE_TYPE_MASK) == ECMA_TYPE_DIRECT_STRING)
{
return (ecma_string_t *) (uintptr_t) value;
}
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
} /* ecma_get_prop_name_from_value */
/**
* Get pointer to ecma-object from ecma value
*
@@ -737,6 +840,13 @@ ecma_copy_value (ecma_value_t value) /**< value description */
ecma_ref_ecma_string (ecma_get_string_from_value (value));
return value;
}
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
case ECMA_TYPE_SYMBOL:
{
ecma_ref_ecma_string (ecma_get_symbol_from_value (value));
return value;
}
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
case ECMA_TYPE_OBJECT:
{
ecma_ref_object (ecma_get_object_from_value (value));
@@ -927,7 +1037,13 @@ ecma_free_value (ecma_value_t value) /**< value description */
ecma_deref_ecma_string (string_p);
break;
}
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
case ECMA_TYPE_SYMBOL:
{
ecma_deref_ecma_string (ecma_get_symbol_from_value (value));
break;
}
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
case ECMA_TYPE_OBJECT:
{
ecma_deref_object (ecma_get_object_from_value (value));
@@ -1027,6 +1143,12 @@ ecma_get_typeof_lit_id (ecma_value_t value) /**< input ecma value */
{
ret_value = LIT_MAGIC_STRING_STRING;
}
#ifndef CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN
else if (ecma_is_value_symbol (value))
{
ret_value = LIT_MAGIC_STRING_SYMBOL;
}
#endif /* !CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN */
else
{
JERRY_ASSERT (ecma_is_value_object (value));