jerryscript/jerry-core/ecma/base/ecma-helpers-value.cpp

902 lines
29 KiB
C++

/* Copyright 2015 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmahelpers Helpers for operations with ECMA data types
* @{
*/
#include "ecma-alloc.h"
#include "ecma-gc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "jrt.h"
#include "jrt-bit-fields.h"
JERRY_STATIC_ASSERT (sizeof (ecma_value_t) * JERRY_BITSINBYTE >= ECMA_VALUE_SIZE);
JERRY_STATIC_ASSERT (sizeof (ecma_completion_value_t) * JERRY_BITSINBYTE >= ECMA_COMPLETION_VALUE_SIZE);
/**
* Get type field of ecma-value
*
* @return type field
*/
static ecma_type_t __attr_pure___
ecma_get_value_type_field (ecma_value_t value) /**< ecma-value */
{
return (ecma_type_t) jrt_extract_bit_field (value,
ECMA_VALUE_TYPE_POS,
ECMA_VALUE_TYPE_WIDTH);
} /* ecma_get_value_type_field */
/**
* Get value field of ecma-value
*
* @return value field
*/
static uintptr_t __attr_pure___
ecma_get_value_value_field (ecma_value_t value) /**< ecma-value */
{
return (uintptr_t) jrt_extract_bit_field (value,
ECMA_VALUE_VALUE_POS,
ECMA_VALUE_VALUE_WIDTH);
} /* ecma_get_value_value_field */
/**
* Set type field of ecma-value
*
* @return ecma-value with updated field
*/
static ecma_value_t __attr_pure___
ecma_set_value_type_field (ecma_value_t value, /**< ecma-value to set field in */
ecma_type_t type_field) /**< new field value */
{
return (ecma_value_t) jrt_set_bit_field_value (value,
type_field,
ECMA_VALUE_TYPE_POS,
ECMA_VALUE_TYPE_WIDTH);
} /* ecma_set_value_type_field */
/**
* Set value field of ecma-value
*
* @return ecma-value with updated field
*/
static ecma_value_t __attr_pure___
ecma_set_value_value_field (ecma_value_t value, /**< ecma-value to set field in */
uintptr_t value_field) /**< new field value */
{
return (ecma_value_t) jrt_set_bit_field_value (value,
value_field,
ECMA_VALUE_VALUE_POS,
ECMA_VALUE_VALUE_WIDTH);
} /* ecma_set_value_value_field */
/**
* Check if the value is empty.
*
* @return true - if the value contains implementation-defined empty simple value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_empty (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SIMPLE
&& ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_EMPTY);
} /* ecma_is_value_empty */
/**
* Check if the value is undefined.
*
* @return true - if the value contains ecma-undefined simple value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_undefined (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SIMPLE
&& ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_UNDEFINED);
} /* ecma_is_value_undefined */
/**
* Check if the value is null.
*
* @return true - if the value contains ecma-null simple value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_null (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SIMPLE
&& ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_NULL);
} /* ecma_is_value_null */
/**
* Check if the value is boolean.
*
* @return true - if the value contains ecma-true or ecma-false simple values,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_boolean (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SIMPLE
&& (ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_TRUE
|| ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_FALSE));
} /* ecma_is_value_boolean */
/**
* Check if the value is true.
*
* Warning:
* value must be boolean
*
* @return true - if the value contains ecma-true simple value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_true (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_SIMPLE
&& ecma_get_value_value_field (value) == ECMA_SIMPLE_VALUE_TRUE);
} /* ecma_is_value_true */
/**
* Check if the value is ecma-number.
*
* @return true - if the value contains ecma-number value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_number (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_NUMBER);
} /* ecma_is_value_number */
/**
* Check if the value is ecma-string.
*
* @return true - if the value contains ecma-string value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_string (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_STRING);
} /* ecma_is_value_string */
/**
* Check if the value is object.
*
* @return true - if the value contains object value,
* false - otherwise.
*/
bool __attr_pure___ __attr_always_inline___
ecma_is_value_object (ecma_value_t value) /**< ecma-value */
{
return (ecma_get_value_type_field (value) == ECMA_TYPE_OBJECT);
} /* ecma_is_value_object */
/**
* Debug assertion that specified value's type is one of ECMA-defined
* script-visible types, i.e.: undefined, null, boolean, number, string, object.
*/
void
ecma_check_value_type_is_spec_defined (ecma_value_t value) /**< ecma-value */
{
JERRY_ASSERT (ecma_is_value_undefined (value)
|| ecma_is_value_null (value)
|| ecma_is_value_boolean (value)
|| ecma_is_value_number (value)
|| ecma_is_value_string (value)
|| ecma_is_value_object (value));
} /* ecma_check_value_type_is_spec_defined */
/**
* Simple value constructor
*/
ecma_value_t __attr_const___ __attr_always_inline___
ecma_make_simple_value (const ecma_simple_value_t value) /**< simple value */
{
ecma_value_t ret_value = 0;
ret_value = ecma_set_value_type_field (ret_value, ECMA_TYPE_SIMPLE);
ret_value = ecma_set_value_value_field (ret_value, value);
return ret_value;
} /* ecma_make_simple_value */
/**
* Number value constructor
*/
ecma_value_t __attr_const___
ecma_make_number_value (const ecma_number_t* num_p) /**< number to reference in value */
{
JERRY_ASSERT (num_p != NULL);
mem_cpointer_t num_cp;
ECMA_SET_NON_NULL_POINTER (num_cp, num_p);
ecma_value_t ret_value = 0;
ret_value = ecma_set_value_type_field (ret_value, ECMA_TYPE_NUMBER);
ret_value = ecma_set_value_value_field (ret_value, num_cp);
return ret_value;
} /* ecma_make_number_value */
/**
* String value constructor
*/
ecma_value_t __attr_const___
ecma_make_string_value (const ecma_string_t* ecma_string_p) /**< string to reference in value */
{
JERRY_ASSERT (ecma_string_p != NULL);
mem_cpointer_t string_cp;
ECMA_SET_NON_NULL_POINTER (string_cp, ecma_string_p);
ecma_value_t ret_value = 0;
ret_value = ecma_set_value_type_field (ret_value, ECMA_TYPE_STRING);
ret_value = ecma_set_value_value_field (ret_value, string_cp);
return ret_value;
} /* ecma_make_string_value */
/**
* object value constructor
*/
ecma_value_t __attr_const___
ecma_make_object_value (const ecma_object_t* object_p) /**< object to reference in value */
{
JERRY_ASSERT (object_p != NULL);
mem_cpointer_t object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
ecma_value_t ret_value = 0;
ret_value = ecma_set_value_type_field (ret_value, ECMA_TYPE_OBJECT);
ret_value = ecma_set_value_value_field (ret_value, object_cp);
return ret_value;
} /* ecma_make_object_value */
/**
* Get pointer to ecma-number from ecma-value
*
* @return the pointer
*/
ecma_number_t* __attr_pure___
ecma_get_number_from_value (ecma_value_t value) /**< ecma-value */
{
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_NUMBER);
return ECMA_GET_NON_NULL_POINTER (ecma_number_t,
ecma_get_value_value_field (value));
} /* ecma_get_number_from_value */
/**
* Get pointer to ecma-string from ecma-value
*
* @return the pointer
*/
ecma_string_t* __attr_pure___
ecma_get_string_from_value (ecma_value_t value) /**< ecma-value */
{
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_STRING);
return ECMA_GET_NON_NULL_POINTER (ecma_string_t,
ecma_get_value_value_field (value));
} /* ecma_get_string_from_value */
/**
* Get pointer to ecma-object from ecma-value
*
* @return the pointer
*/
ecma_object_t* __attr_pure___
ecma_get_object_from_value (ecma_value_t value) /**< ecma-value */
{
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_OBJECT);
return ECMA_GET_NON_NULL_POINTER (ecma_object_t,
ecma_get_value_value_field (value));
} /* ecma_get_object_from_value */
/**
* Copy ecma-value.
*
* Note:
* Operation algorithm.
* switch (valuetype)
* case simple:
* simply return the value as it was passed;
* case number:
* copy the number
* and return new ecma-value
* pointing to copy of the number;
* case string:
* increase reference counter of the string
* and return the value as it was passed.
* case object;
* increase reference counter of the object if do_ref_if_object is true
* and return the value as it was passed.
*
* @return See note.
*/
ecma_value_t
ecma_copy_value (ecma_value_t value, /**< ecma-value */
bool do_ref_if_object) /**< if the value is object value,
increment reference counter of the object */
{
ecma_value_t value_copy = 0;
switch (ecma_get_value_type_field (value))
{
case ECMA_TYPE_SIMPLE:
{
value_copy = value;
break;
}
case ECMA_TYPE_NUMBER:
{
ecma_number_t *num_p = ecma_get_number_from_value (value);
ecma_number_t *number_copy_p = ecma_alloc_number ();
*number_copy_p = *num_p;
value_copy = ecma_make_number_value (number_copy_p);
break;
}
case ECMA_TYPE_STRING:
{
ecma_string_t *string_p = ecma_get_string_from_value (value);
string_p = ecma_copy_or_ref_ecma_string (string_p);
value_copy = ecma_make_string_value (string_p);
break;
}
case ECMA_TYPE_OBJECT:
{
ecma_object_t *obj_p = ecma_get_object_from_value (value);
if (do_ref_if_object)
{
ecma_ref_object (obj_p);
}
value_copy = value;
break;
}
}
return value_copy;
} /* ecma_copy_value */
/**
* Free the ecma-value
*/
void
ecma_free_value (ecma_value_t value, /**< value description */
bool do_deref_if_object) /**< if the value is object value,
decrement reference counter of the object */
{
switch (ecma_get_value_type_field (value))
{
case ECMA_TYPE_SIMPLE:
{
/* doesn't hold additional memory */
break;
}
case ECMA_TYPE_NUMBER:
{
ecma_number_t *number_p = ecma_get_number_from_value (value);
ecma_dealloc_number (number_p);
break;
}
case ECMA_TYPE_STRING:
{
ecma_string_t *string_p = ecma_get_string_from_value (value);
ecma_deref_ecma_string (string_p);
break;
}
case ECMA_TYPE_OBJECT:
{
if (do_deref_if_object)
{
ecma_deref_object (ecma_get_object_from_value (value));
}
break;
}
}
} /* ecma_free_value */
/**
* Get type field of completion value
*
* @return type field
*/
static ecma_completion_type_t __attr_const___
ecma_get_completion_value_type_field (ecma_completion_value_t completion_value) /**< completion value */
{
return (ecma_completion_type_t) jrt_extract_bit_field (completion_value,
ECMA_COMPLETION_VALUE_TYPE_POS,
ECMA_COMPLETION_VALUE_TYPE_WIDTH);
} /* ecma_get_completion_value_type_field */
/**
* Get value field of completion value
*
* @return value field
*/
static ecma_value_t __attr_const___
ecma_get_completion_value_value_field (ecma_completion_value_t completion_value) /**< completion value */
{
return (ecma_value_t) jrt_extract_bit_field (completion_value,
ECMA_COMPLETION_VALUE_VALUE_POS,
ECMA_COMPLETION_VALUE_VALUE_WIDTH);
} /* ecma_get_completion_value_value_field */
/**
* Get target of break / continue completion value
*
* @return instruction counter
*/
static vm_instr_counter_t
ecma_get_completion_value_target (ecma_completion_value_t completion_value) /**< completion value */
{
return (vm_instr_counter_t) jrt_extract_bit_field (completion_value,
ECMA_COMPLETION_VALUE_TARGET_POS,
ECMA_COMPLETION_VALUE_TARGET_WIDTH);
} /* ecma_get_completion_value_target */
/**
* Set type field of completion value
*
* @return completion value with updated field
*/
static ecma_completion_value_t __attr_const___
ecma_set_completion_value_type_field (ecma_completion_value_t completion_value, /**< completion value
* to set field in */
ecma_completion_type_t type_field) /**< new field value */
{
return (ecma_completion_value_t) jrt_set_bit_field_value (completion_value,
type_field,
ECMA_COMPLETION_VALUE_TYPE_POS,
ECMA_COMPLETION_VALUE_TYPE_WIDTH);
} /* ecma_set_completion_value_type_field */
/**
* Set value field of completion value
*
* @return completion value with updated field
*/
static ecma_completion_value_t __attr_pure___
ecma_set_completion_value_value_field (ecma_completion_value_t completion_value, /**< completion value
* to set field in */
ecma_value_t value_field) /**< new field value */
{
return (ecma_completion_value_t) jrt_set_bit_field_value (completion_value,
value_field,
ECMA_COMPLETION_VALUE_VALUE_POS,
ECMA_COMPLETION_VALUE_VALUE_WIDTH);
} /* ecma_set_completion_value_value_field */
/**
* Set target of break / continue completion value
*
* @return completion value with updated field
*/
static ecma_completion_value_t __attr_const___
ecma_set_completion_value_target (ecma_completion_value_t completion_value, /**< completion value
* to set field in */
vm_instr_counter_t target) /**< break / continue target */
{
return (ecma_completion_value_t) jrt_set_bit_field_value (completion_value,
target,
ECMA_COMPLETION_VALUE_TARGET_POS,
ECMA_COMPLETION_VALUE_TARGET_WIDTH);
} /* ecma_set_completion_value_target */
/**
* Normal, throw, return, exit and meta completion values constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_pure___ __attr_always_inline___
ecma_make_completion_value (ecma_completion_type_t type, /**< type */
ecma_value_t value) /**< value */
{
const bool is_type_ok = (type == ECMA_COMPLETION_TYPE_NORMAL
|| type == ECMA_COMPLETION_TYPE_THROW
|| type == ECMA_COMPLETION_TYPE_RETURN
|| (type == ECMA_COMPLETION_TYPE_META
&& ecma_is_value_empty (value)));
JERRY_ASSERT (is_type_ok);
ecma_completion_value_t completion_value = 0;
completion_value = ecma_set_completion_value_type_field (completion_value,
type);
completion_value = ecma_set_completion_value_value_field (completion_value,
value);
return completion_value;
} /* ecma_make_completion_value */
/**
* Simple normal completion value constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_const___ __attr_always_inline___
ecma_make_simple_completion_value (ecma_simple_value_t simple_value) /**< simple ecma-value */
{
JERRY_ASSERT (simple_value == ECMA_SIMPLE_VALUE_UNDEFINED
|| simple_value == ECMA_SIMPLE_VALUE_NULL
|| simple_value == ECMA_SIMPLE_VALUE_FALSE
|| simple_value == ECMA_SIMPLE_VALUE_TRUE);
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_NORMAL,
ecma_make_simple_value (simple_value));
} /* ecma_make_simple_completion_value */
/**
* Normal completion value constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_pure___ __attr_always_inline___
ecma_make_normal_completion_value (ecma_value_t value) /**< value */
{
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_NORMAL, value);
} /* ecma_make_normal_completion_value */
/**
* Throw completion value constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_pure___ __attr_always_inline___
ecma_make_throw_completion_value (ecma_value_t value) /**< value */
{
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_THROW, value);
} /* ecma_make_throw_completion_value */
/**
* Throw completion value constructor.
*
* @return 'throw' completion value
*/
ecma_completion_value_t __attr_const___
ecma_make_throw_obj_completion_value (ecma_object_t *exception_p) /**< an object */
{
JERRY_ASSERT (exception_p != NULL
&& !ecma_is_lexical_environment (exception_p));
ecma_value_t exception = ecma_make_object_value (exception_p);
return ecma_make_throw_completion_value (exception);
} /* ecma_make_throw_obj_completion_value */
/**
* Empty completion value constructor.
*
* @return (normal, empty, reserved) completion value.
*/
ecma_completion_value_t __attr_const___ __attr_always_inline___
ecma_make_empty_completion_value (void)
{
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_NORMAL,
ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY));
} /* ecma_make_empty_completion_value */
/**
* Return completion value constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_pure___ __attr_always_inline___
ecma_make_return_completion_value (ecma_value_t value) /**< value */
{
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_RETURN, value);
} /* ecma_make_return_completion_value */
/**
* Meta completion value constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_const___ __attr_always_inline___
ecma_make_meta_completion_value (void)
{
return ecma_make_completion_value (ECMA_COMPLETION_TYPE_META,
ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY));
} /* ecma_make_meta_completion_value */
/**
* Break / continue completion values constructor
*
* @return completion value
*/
ecma_completion_value_t __attr_const___
ecma_make_jump_completion_value (vm_instr_counter_t target) /**< target break / continue */
{
ecma_completion_value_t completion_value = 0;
completion_value = ecma_set_completion_value_type_field (completion_value,
ECMA_COMPLETION_TYPE_JUMP);
completion_value = ecma_set_completion_value_target (completion_value,
target);
return completion_value;
} /* ecma_make_jump_completion_value */
/**
* Get ecma-value from specified completion value
*
* @return ecma-value
*/
ecma_value_t __attr_const___ __attr_always_inline___
ecma_get_completion_value_value (ecma_completion_value_t completion_value) /**< completion value */
{
const ecma_completion_type_t type = ecma_get_completion_value_type_field (completion_value);
const bool is_type_ok = (type == ECMA_COMPLETION_TYPE_NORMAL
|| type == ECMA_COMPLETION_TYPE_THROW
|| type == ECMA_COMPLETION_TYPE_RETURN);
JERRY_ASSERT (is_type_ok);
return ecma_get_completion_value_value_field (completion_value);
} /* ecma_get_completion_value_value */
/**
* Get pointer to ecma-number from completion value
*
* @return pointer
*/
ecma_number_t* __attr_const___
ecma_get_number_from_completion_value (ecma_completion_value_t completion_value) /**< completion value */
{
return ecma_get_number_from_value (ecma_get_completion_value_value (completion_value));
} /* ecma_get_number_from_completion_value */
/**
* Get pointer to ecma-string from completion value
*
* @return pointer
*/
ecma_string_t* __attr_const___
ecma_get_string_from_completion_value (ecma_completion_value_t completion_value) /**< completion value */
{
return ecma_get_string_from_value (ecma_get_completion_value_value (completion_value));
} /* ecma_get_string_from_completion_value */
/**
* Get pointer to ecma-object from completion value
*
* @return pointer
*/
ecma_object_t* __attr_const___
ecma_get_object_from_completion_value (ecma_completion_value_t completion_value) /**< completion value */
{
return ecma_get_object_from_value (ecma_get_completion_value_value (completion_value));
} /* ecma_get_object_from_completion_value */
/**
* Get break / continue target from completion value
*
* @return instruction counter
*/
vm_instr_counter_t
ecma_get_jump_target_from_completion_value (ecma_completion_value_t completion_value) /**< completion
* value */
{
JERRY_ASSERT (ecma_get_completion_value_type_field (completion_value) == ECMA_COMPLETION_TYPE_JUMP);
return ecma_get_completion_value_target (completion_value);
} /* ecma_get_jump_target_from_completion_value */
/**
* Copy ecma-completion value.
*
* @return (source.type, ecma_copy_value (source.value), source.target).
*/
ecma_completion_value_t
ecma_copy_completion_value (ecma_completion_value_t value) /**< completion value */
{
const ecma_completion_type_t type = ecma_get_completion_value_type_field (value);
const bool is_type_ok = (type == ECMA_COMPLETION_TYPE_NORMAL
|| type == ECMA_COMPLETION_TYPE_THROW
|| type == ECMA_COMPLETION_TYPE_RETURN
|| type == ECMA_COMPLETION_TYPE_JUMP);
JERRY_ASSERT (is_type_ok);
return ecma_make_completion_value (type,
ecma_copy_value (ecma_get_completion_value_value_field (value),
true));
} /* ecma_copy_completion_value */
/**
* Free the completion value.
*/
void
ecma_free_completion_value (ecma_completion_value_t completion_value) /**< completion value */
{
switch (ecma_get_completion_value_type_field (completion_value))
{
case ECMA_COMPLETION_TYPE_NORMAL:
case ECMA_COMPLETION_TYPE_THROW:
case ECMA_COMPLETION_TYPE_RETURN:
{
ecma_value_t v = ecma_get_completion_value_value_field (completion_value);
ecma_free_value (v, true);
break;
}
case ECMA_COMPLETION_TYPE_JUMP:
{
break;
}
case ECMA_COMPLETION_TYPE_META:
{
JERRY_UNREACHABLE ();
}
}
} /* ecma_free_completion_value */
/**
* Check if the completion value is normal value.
*
* @return true - if the completion type is normal,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_normal (ecma_completion_value_t value) /**< completion value */
{
return (ecma_get_completion_value_type_field (value) == ECMA_COMPLETION_TYPE_NORMAL);
} /* ecma_is_completion_value_normal */
/**
* Check if the completion value is throw value.
*
* @return true - if the completion type is throw,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_throw (ecma_completion_value_t value) /**< completion value */
{
return (ecma_get_completion_value_type_field (value) == ECMA_COMPLETION_TYPE_THROW);
} /* ecma_is_completion_value_throw */
/**
* Check if the completion value is return value.
*
* @return true - if the completion type is return,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_return (ecma_completion_value_t value) /**< completion value */
{
return (ecma_get_completion_value_type_field (value) == ECMA_COMPLETION_TYPE_RETURN);
} /* ecma_is_completion_value_return */
/**
* Check if the completion value is meta value.
*
* @return true - if the completion type is meta,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_meta (ecma_completion_value_t value) /**< completion value */
{
if (ecma_get_completion_value_type_field (value) == ECMA_COMPLETION_TYPE_META)
{
JERRY_ASSERT (ecma_is_value_empty (ecma_get_completion_value_value_field (value)));
return true;
}
else
{
return false;
}
} /* ecma_is_completion_value_meta */
/**
* Check if the completion value is break / continue value.
*
* @return true - if the completion type is break / continue,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_jump (ecma_completion_value_t value) /**< completion value */
{
return (ecma_get_completion_value_type_field (value) == ECMA_COMPLETION_TYPE_JUMP);
} /* ecma_is_completion_value_jump */
/**
* Check if the completion value is specified normal simple value.
*
* @return true - if the completion type is normal and
* value contains specified simple ecma-value,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_normal_simple_value (ecma_completion_value_t value, /**< completion value */
ecma_simple_value_t simple_value) /**< simple value to check
for equality with */
{
return (value == ecma_make_simple_completion_value (simple_value));
} /* ecma_is_completion_value_normal_simple_value */
/**
* Check if the completion value is normal true.
*
* @return true - if the completion type is normal and
* value contains ecma-true simple value,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_normal_true (ecma_completion_value_t value) /**< completion value */
{
return ecma_is_completion_value_normal_simple_value (value, ECMA_SIMPLE_VALUE_TRUE);
} /* ecma_is_completion_value_normal_true */
/**
* Check if the completion value is normal false.
*
* @return true - if the completion type is normal and
* value contains ecma-false simple value,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_normal_false (ecma_completion_value_t value) /**< completion value */
{
return ecma_is_completion_value_normal_simple_value (value, ECMA_SIMPLE_VALUE_FALSE);
} /* ecma_is_completion_value_normal_false */
/**
* Check if the completion value is normal empty value.
*
* @return true - if the completion type is normal and
* value contains empty simple value,
* false - otherwise.
*/
bool __attr_const___ __attr_always_inline___
ecma_is_completion_value_empty (ecma_completion_value_t value) /**< completion value */
{
return (ecma_is_completion_value_normal (value)
&& ecma_is_value_empty (ecma_get_completion_value_value_field (value)));
} /* ecma_is_completion_value_empty */
/**
* @}
* @}
*/