/* * Heap object representation. * * Heap objects are used for ECMAScript objects, arrays, and functions, * but also for internal control like declarative and object environment * records. Compiled functions, native functions, and threads are also * objects but with an extended C struct. * * Objects provide the required ECMAScript semantics and exotic behaviors * especially for property access. * * Properties are stored in three conceptual parts: * * 1. A linear 'entry part' contains ordered key-value-attributes triples * and is the main method of string properties. * * 2. An optional linear 'array part' is used for array objects to store a * (dense) range of [0,N[ array indexed entries with default attributes * (writable, enumerable, configurable). If the array part would become * sparse or non-default attributes are required, the array part is * abandoned and moved to the 'entry part'. * * 3. An optional 'hash part' is used to optimize lookups of the entry * part; it is used only for objects with sufficiently many properties * and can be abandoned without loss of information. * * These three conceptual parts are stored in a single memory allocated area. * This minimizes memory allocation overhead but also means that all three * parts are resized together, and makes property access a bit complicated. */ #if !defined(DUK_HOBJECT_H_INCLUDED) #define DUK_HOBJECT_H_INCLUDED /* Object flags. Make sure this stays in sync with debugger object * inspection code. */ /* XXX: some flags are object subtype specific (e.g. common to all function * subtypes, duk_harray, etc) and could be reused for different subtypes. */ #define DUK_HOBJECT_FLAG_EXTENSIBLE DUK_HEAPHDR_USER_FLAG(0) /* object is extensible */ #define DUK_HOBJECT_FLAG_CONSTRUCTABLE DUK_HEAPHDR_USER_FLAG(1) /* object is constructable */ #define DUK_HOBJECT_FLAG_CALLABLE DUK_HEAPHDR_USER_FLAG(2) /* object is callable */ #define DUK_HOBJECT_FLAG_BOUNDFUNC DUK_HEAPHDR_USER_FLAG(3) /* object established using Function.prototype.bind() */ #define DUK_HOBJECT_FLAG_COMPFUNC DUK_HEAPHDR_USER_FLAG(4) /* object is a compiled function (duk_hcompfunc) */ #define DUK_HOBJECT_FLAG_NATFUNC DUK_HEAPHDR_USER_FLAG(5) /* object is a native function (duk_hnatfunc) */ #define DUK_HOBJECT_FLAG_BUFOBJ DUK_HEAPHDR_USER_FLAG(6) /* object is a buffer object (duk_hbufobj) (always exotic) */ #define DUK_HOBJECT_FLAG_FASTREFS DUK_HEAPHDR_USER_FLAG(7) /* object has no fields needing DECREF/marking beyond base duk_hobject header */ #define DUK_HOBJECT_FLAG_ARRAY_PART DUK_HEAPHDR_USER_FLAG(8) /* object has an array part (a_size may still be 0) */ #define DUK_HOBJECT_FLAG_STRICT DUK_HEAPHDR_USER_FLAG(9) /* function: function object is strict */ #define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tail called */ #define DUK_HOBJECT_FLAG_NEWENV DUK_HEAPHDR_USER_FLAG(11) /* function: create new environment when called (see duk_hcompfunc) */ #define DUK_HOBJECT_FLAG_NAMEBINDING DUK_HEAPHDR_USER_FLAG(12) /* function: create binding for func name (function templates only, used for named function expressions) */ #define DUK_HOBJECT_FLAG_CREATEARGS DUK_HEAPHDR_USER_FLAG(13) /* function: create an arguments object on function call */ #define DUK_HOBJECT_FLAG_HAVE_FINALIZER DUK_HEAPHDR_USER_FLAG(14) /* object has a callable (own) finalizer property */ #define DUK_HOBJECT_FLAG_EXOTIC_ARRAY DUK_HEAPHDR_USER_FLAG(15) /* 'Array' object, array length and index exotic behavior */ #define DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ DUK_HEAPHDR_USER_FLAG(16) /* 'String' object, array index exotic behavior */ #define DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS DUK_HEAPHDR_USER_FLAG(17) /* 'Arguments' object and has arguments exotic behavior (non-strict callee) */ #define DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ DUK_HEAPHDR_USER_FLAG(18) /* 'Proxy' object */ #define DUK_HOBJECT_FLAG_SPECIAL_CALL DUK_HEAPHDR_USER_FLAG(19) /* special casing in call behavior, for .call(), .apply(), etc. */ #define DUK_HOBJECT_FLAG_CLASS_BASE DUK_HEAPHDR_USER_FLAG_NUMBER(20) #define DUK_HOBJECT_FLAG_CLASS_BITS 5 #define DUK_HOBJECT_GET_CLASS_NUMBER(h) \ DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS) #define DUK_HOBJECT_SET_CLASS_NUMBER(h,v) \ DUK_HEAPHDR_SET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS, (v)) #define DUK_HOBJECT_GET_CLASS_MASK(h) \ (1UL << DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS)) /* Macro for creating flag initializer from a class number. * Unsigned type cast is needed to avoid warnings about coercing * a signed integer to an unsigned one; the largest class values * have the highest bit (bit 31) set which causes this. */ #define DUK_HOBJECT_CLASS_AS_FLAGS(v) (((duk_uint_t) (v)) << DUK_HOBJECT_FLAG_CLASS_BASE) /* E5 Section 8.6.2 + custom classes */ #define DUK_HOBJECT_CLASS_NONE 0 #define DUK_HOBJECT_CLASS_OBJECT 1 #define DUK_HOBJECT_CLASS_ARRAY 2 #define DUK_HOBJECT_CLASS_FUNCTION 3 #define DUK_HOBJECT_CLASS_ARGUMENTS 4 #define DUK_HOBJECT_CLASS_BOOLEAN 5 #define DUK_HOBJECT_CLASS_DATE 6 #define DUK_HOBJECT_CLASS_ERROR 7 #define DUK_HOBJECT_CLASS_JSON 8 #define DUK_HOBJECT_CLASS_MATH 9 #define DUK_HOBJECT_CLASS_NUMBER 10 #define DUK_HOBJECT_CLASS_REGEXP 11 #define DUK_HOBJECT_CLASS_STRING 12 #define DUK_HOBJECT_CLASS_GLOBAL 13 #define DUK_HOBJECT_CLASS_SYMBOL 14 #define DUK_HOBJECT_CLASS_OBJENV 15 /* custom */ #define DUK_HOBJECT_CLASS_DECENV 16 /* custom */ #define DUK_HOBJECT_CLASS_POINTER 17 /* custom */ #define DUK_HOBJECT_CLASS_THREAD 18 /* custom; implies DUK_HOBJECT_IS_THREAD */ #define DUK_HOBJECT_CLASS_BUFOBJ_MIN 19 #define DUK_HOBJECT_CLASS_ARRAYBUFFER 19 /* implies DUK_HOBJECT_IS_BUFOBJ */ #define DUK_HOBJECT_CLASS_DATAVIEW 20 #define DUK_HOBJECT_CLASS_INT8ARRAY 21 #define DUK_HOBJECT_CLASS_UINT8ARRAY 22 #define DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY 23 #define DUK_HOBJECT_CLASS_INT16ARRAY 24 #define DUK_HOBJECT_CLASS_UINT16ARRAY 25 #define DUK_HOBJECT_CLASS_INT32ARRAY 26 #define DUK_HOBJECT_CLASS_UINT32ARRAY 27 #define DUK_HOBJECT_CLASS_FLOAT32ARRAY 28 #define DUK_HOBJECT_CLASS_FLOAT64ARRAY 29 #define DUK_HOBJECT_CLASS_BUFOBJ_MAX 29 #define DUK_HOBJECT_CLASS_MAX 29 /* Class masks. */ #define DUK_HOBJECT_CMASK_ALL ((1UL << (DUK_HOBJECT_CLASS_MAX + 1)) - 1UL) #define DUK_HOBJECT_CMASK_NONE (1UL << DUK_HOBJECT_CLASS_NONE) #define DUK_HOBJECT_CMASK_ARGUMENTS (1UL << DUK_HOBJECT_CLASS_ARGUMENTS) #define DUK_HOBJECT_CMASK_ARRAY (1UL << DUK_HOBJECT_CLASS_ARRAY) #define DUK_HOBJECT_CMASK_BOOLEAN (1UL << DUK_HOBJECT_CLASS_BOOLEAN) #define DUK_HOBJECT_CMASK_DATE (1UL << DUK_HOBJECT_CLASS_DATE) #define DUK_HOBJECT_CMASK_ERROR (1UL << DUK_HOBJECT_CLASS_ERROR) #define DUK_HOBJECT_CMASK_FUNCTION (1UL << DUK_HOBJECT_CLASS_FUNCTION) #define DUK_HOBJECT_CMASK_JSON (1UL << DUK_HOBJECT_CLASS_JSON) #define DUK_HOBJECT_CMASK_MATH (1UL << DUK_HOBJECT_CLASS_MATH) #define DUK_HOBJECT_CMASK_NUMBER (1UL << DUK_HOBJECT_CLASS_NUMBER) #define DUK_HOBJECT_CMASK_OBJECT (1UL << DUK_HOBJECT_CLASS_OBJECT) #define DUK_HOBJECT_CMASK_REGEXP (1UL << DUK_HOBJECT_CLASS_REGEXP) #define DUK_HOBJECT_CMASK_STRING (1UL << DUK_HOBJECT_CLASS_STRING) #define DUK_HOBJECT_CMASK_GLOBAL (1UL << DUK_HOBJECT_CLASS_GLOBAL) #define DUK_HOBJECT_CMASK_SYMBOL (1UL << DUK_HOBJECT_CLASS_SYMBOL) #define DUK_HOBJECT_CMASK_OBJENV (1UL << DUK_HOBJECT_CLASS_OBJENV) #define DUK_HOBJECT_CMASK_DECENV (1UL << DUK_HOBJECT_CLASS_DECENV) #define DUK_HOBJECT_CMASK_POINTER (1UL << DUK_HOBJECT_CLASS_POINTER) #define DUK_HOBJECT_CMASK_ARRAYBUFFER (1UL << DUK_HOBJECT_CLASS_ARRAYBUFFER) #define DUK_HOBJECT_CMASK_DATAVIEW (1UL << DUK_HOBJECT_CLASS_DATAVIEW) #define DUK_HOBJECT_CMASK_INT8ARRAY (1UL << DUK_HOBJECT_CLASS_INT8ARRAY) #define DUK_HOBJECT_CMASK_UINT8ARRAY (1UL << DUK_HOBJECT_CLASS_UINT8ARRAY) #define DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY (1UL << DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY) #define DUK_HOBJECT_CMASK_INT16ARRAY (1UL << DUK_HOBJECT_CLASS_INT16ARRAY) #define DUK_HOBJECT_CMASK_UINT16ARRAY (1UL << DUK_HOBJECT_CLASS_UINT16ARRAY) #define DUK_HOBJECT_CMASK_INT32ARRAY (1UL << DUK_HOBJECT_CLASS_INT32ARRAY) #define DUK_HOBJECT_CMASK_UINT32ARRAY (1UL << DUK_HOBJECT_CLASS_UINT32ARRAY) #define DUK_HOBJECT_CMASK_FLOAT32ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT32ARRAY) #define DUK_HOBJECT_CMASK_FLOAT64ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT64ARRAY) #define DUK_HOBJECT_CMASK_ALL_BUFOBJS \ (DUK_HOBJECT_CMASK_ARRAYBUFFER | \ DUK_HOBJECT_CMASK_DATAVIEW | \ DUK_HOBJECT_CMASK_INT8ARRAY | \ DUK_HOBJECT_CMASK_UINT8ARRAY | \ DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY | \ DUK_HOBJECT_CMASK_INT16ARRAY | \ DUK_HOBJECT_CMASK_UINT16ARRAY | \ DUK_HOBJECT_CMASK_INT32ARRAY | \ DUK_HOBJECT_CMASK_UINT32ARRAY | \ DUK_HOBJECT_CMASK_FLOAT32ARRAY | \ DUK_HOBJECT_CMASK_FLOAT64ARRAY) #define DUK_HOBJECT_IS_OBJENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_OBJENV) #define DUK_HOBJECT_IS_DECENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_DECENV) #define DUK_HOBJECT_IS_ENV(h) (DUK_HOBJECT_IS_OBJENV((h)) || DUK_HOBJECT_IS_DECENV((h))) #define DUK_HOBJECT_IS_ARRAY(h) DUK_HOBJECT_HAS_EXOTIC_ARRAY((h)) /* Rely on class Array <=> exotic Array */ #define DUK_HOBJECT_IS_BOUNDFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) #define DUK_HOBJECT_IS_COMPFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) #define DUK_HOBJECT_IS_NATFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) #define DUK_HOBJECT_IS_BUFOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) #else #define DUK_HOBJECT_IS_BUFOBJ(h) 0 #endif #define DUK_HOBJECT_IS_THREAD(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_THREAD) #if defined(DUK_USE_ES6_PROXY) #define DUK_HOBJECT_IS_PROXY(h) DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ((h)) #else #define DUK_HOBJECT_IS_PROXY(h) 0 #endif #define DUK_HOBJECT_IS_NONBOUND_FUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, \ DUK_HOBJECT_FLAG_COMPFUNC | \ DUK_HOBJECT_FLAG_NATFUNC) #define DUK_HOBJECT_IS_FUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, \ DUK_HOBJECT_FLAG_BOUNDFUNC | \ DUK_HOBJECT_FLAG_COMPFUNC | \ DUK_HOBJECT_FLAG_NATFUNC) #define DUK_HOBJECT_IS_CALLABLE(h) DUK_HOBJECT_HAS_CALLABLE((h)) /* Object has any exotic behavior(s). */ #define DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS (DUK_HOBJECT_FLAG_EXOTIC_ARRAY | \ DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS | \ DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | \ DUK_HOBJECT_FLAG_BUFOBJ | \ DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) #define DUK_HOBJECT_HAS_EXOTIC_BEHAVIOR(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS) /* Object has any virtual properties (not counting Proxy behavior). */ #define DUK_HOBJECT_VIRTUAL_PROPERTY_FLAGS (DUK_HOBJECT_FLAG_EXOTIC_ARRAY | \ DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | \ DUK_HOBJECT_FLAG_BUFOBJ) #define DUK_HOBJECT_HAS_VIRTUAL_PROPERTIES(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_VIRTUAL_PROPERTY_FLAGS) #define DUK_HOBJECT_HAS_EXTENSIBLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) #define DUK_HOBJECT_HAS_CONSTRUCTABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) #define DUK_HOBJECT_HAS_CALLABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) #define DUK_HOBJECT_HAS_BOUNDFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) #define DUK_HOBJECT_HAS_COMPFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) #define DUK_HOBJECT_HAS_NATFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) #define DUK_HOBJECT_HAS_BUFOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) #else #define DUK_HOBJECT_HAS_BUFOBJ(h) 0 #endif #define DUK_HOBJECT_HAS_FASTREFS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) #define DUK_HOBJECT_HAS_ARRAY_PART(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) #define DUK_HOBJECT_HAS_STRICT(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) #define DUK_HOBJECT_HAS_NOTAIL(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) #define DUK_HOBJECT_HAS_NEWENV(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) #define DUK_HOBJECT_HAS_NAMEBINDING(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) #define DUK_HOBJECT_HAS_CREATEARGS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) #define DUK_HOBJECT_HAS_HAVE_FINALIZER(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) #define DUK_HOBJECT_HAS_EXOTIC_ARRAY(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) #define DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) #define DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) #if defined(DUK_USE_ES6_PROXY) #define DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) #else #define DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h) 0 #endif #define DUK_HOBJECT_HAS_SPECIAL_CALL(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) #define DUK_HOBJECT_SET_EXTENSIBLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) #define DUK_HOBJECT_SET_CONSTRUCTABLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) #define DUK_HOBJECT_SET_CALLABLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) #define DUK_HOBJECT_SET_BOUNDFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) #define DUK_HOBJECT_SET_COMPFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) #define DUK_HOBJECT_SET_NATFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) #define DUK_HOBJECT_SET_BUFOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) #endif #define DUK_HOBJECT_SET_FASTREFS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) #define DUK_HOBJECT_SET_ARRAY_PART(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) #define DUK_HOBJECT_SET_STRICT(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) #define DUK_HOBJECT_SET_NOTAIL(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) #define DUK_HOBJECT_SET_NEWENV(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) #define DUK_HOBJECT_SET_NAMEBINDING(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) #define DUK_HOBJECT_SET_CREATEARGS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) #define DUK_HOBJECT_SET_HAVE_FINALIZER(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) #define DUK_HOBJECT_SET_EXOTIC_ARRAY(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) #define DUK_HOBJECT_SET_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) #define DUK_HOBJECT_SET_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) #if defined(DUK_USE_ES6_PROXY) #define DUK_HOBJECT_SET_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) #endif #define DUK_HOBJECT_SET_SPECIAL_CALL(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) #define DUK_HOBJECT_CLEAR_EXTENSIBLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) #define DUK_HOBJECT_CLEAR_CONSTRUCTABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) #define DUK_HOBJECT_CLEAR_CALLABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) #define DUK_HOBJECT_CLEAR_BOUNDFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) #define DUK_HOBJECT_CLEAR_COMPFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) #define DUK_HOBJECT_CLEAR_NATFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) #define DUK_HOBJECT_CLEAR_BUFOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) #endif #define DUK_HOBJECT_CLEAR_FASTREFS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) #define DUK_HOBJECT_CLEAR_ARRAY_PART(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) #define DUK_HOBJECT_CLEAR_STRICT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) #define DUK_HOBJECT_CLEAR_NOTAIL(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) #define DUK_HOBJECT_CLEAR_NEWENV(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) #define DUK_HOBJECT_CLEAR_NAMEBINDING(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) #define DUK_HOBJECT_CLEAR_CREATEARGS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) #define DUK_HOBJECT_CLEAR_HAVE_FINALIZER(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) #define DUK_HOBJECT_CLEAR_EXOTIC_ARRAY(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) #define DUK_HOBJECT_CLEAR_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) #define DUK_HOBJECT_CLEAR_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) #if defined(DUK_USE_ES6_PROXY) #define DUK_HOBJECT_CLEAR_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) #endif #define DUK_HOBJECT_CLEAR_SPECIAL_CALL(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) /* Object can/cannot use FASTREFS, i.e. has no strong reference fields beyond * duk_hobject base header. This is used just for asserts so doesn't need to * be optimized. */ #define DUK_HOBJECT_PROHIBITS_FASTREFS(h) \ (DUK_HOBJECT_IS_COMPFUNC((h)) || DUK_HOBJECT_IS_DECENV((h)) || DUK_HOBJECT_IS_OBJENV((h)) || \ DUK_HOBJECT_IS_BUFOBJ((h)) || DUK_HOBJECT_IS_THREAD((h)) || DUK_HOBJECT_IS_PROXY((h)) || \ DUK_HOBJECT_IS_BOUNDFUNC((h))) #define DUK_HOBJECT_ALLOWS_FASTREFS(h) (!DUK_HOBJECT_PROHIBITS_FASTREFS((h))) /* Flags used for property attributes in duk_propdesc and packed flags. * Must fit into 8 bits. */ #define DUK_PROPDESC_FLAG_WRITABLE (1U << 0) /* E5 Section 8.6.1 */ #define DUK_PROPDESC_FLAG_ENUMERABLE (1U << 1) /* E5 Section 8.6.1 */ #define DUK_PROPDESC_FLAG_CONFIGURABLE (1U << 2) /* E5 Section 8.6.1 */ #define DUK_PROPDESC_FLAG_ACCESSOR (1U << 3) /* accessor */ #define DUK_PROPDESC_FLAG_VIRTUAL (1U << 4) /* property is virtual: used in duk_propdesc, never stored * (used by e.g. buffer virtual properties) */ #define DUK_PROPDESC_FLAGS_MASK (DUK_PROPDESC_FLAG_WRITABLE | \ DUK_PROPDESC_FLAG_ENUMERABLE | \ DUK_PROPDESC_FLAG_CONFIGURABLE | \ DUK_PROPDESC_FLAG_ACCESSOR) /* Additional flags which are passed in the same flags argument as property * flags but are not stored in object properties. */ #define DUK_PROPDESC_FLAG_NO_OVERWRITE (1U << 4) /* internal define property: skip write silently if exists */ /* Convenience defines for property attributes. */ #define DUK_PROPDESC_FLAGS_NONE 0 #define DUK_PROPDESC_FLAGS_W (DUK_PROPDESC_FLAG_WRITABLE) #define DUK_PROPDESC_FLAGS_E (DUK_PROPDESC_FLAG_ENUMERABLE) #define DUK_PROPDESC_FLAGS_C (DUK_PROPDESC_FLAG_CONFIGURABLE) #define DUK_PROPDESC_FLAGS_WE (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE) #define DUK_PROPDESC_FLAGS_WC (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE) #define DUK_PROPDESC_FLAGS_EC (DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE) #define DUK_PROPDESC_FLAGS_WEC (DUK_PROPDESC_FLAG_WRITABLE | \ DUK_PROPDESC_FLAG_ENUMERABLE | \ DUK_PROPDESC_FLAG_CONFIGURABLE) /* Flags for duk_hobject_get_own_propdesc() and variants. */ #define DUK_GETDESC_FLAG_PUSH_VALUE (1U << 0) /* push value to stack */ #define DUK_GETDESC_FLAG_IGNORE_PROTOLOOP (1U << 1) /* don't throw for prototype loop */ /* * Macro for object validity check * * Assert for currently guaranteed relations between flags, for instance. */ #define DUK_ASSERT_HOBJECT_VALID(h) do { \ DUK_ASSERT((h) != NULL); \ DUK_ASSERT(!DUK_HOBJECT_IS_CALLABLE((h)) || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FUNCTION); \ DUK_ASSERT(!DUK_HOBJECT_IS_BUFOBJ((h)) || \ (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_ARRAYBUFFER || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_DATAVIEW || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT8ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT8ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT16ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT16ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT32ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT32ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FLOAT32ARRAY || \ DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FLOAT64ARRAY)); \ /* Object is an Array <=> object has exotic array behavior */ \ DUK_ASSERT((DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_ARRAY && DUK_HOBJECT_HAS_EXOTIC_ARRAY((h))) || \ (DUK_HOBJECT_GET_CLASS_NUMBER((h)) != DUK_HOBJECT_CLASS_ARRAY && !DUK_HOBJECT_HAS_EXOTIC_ARRAY((h)))); \ } while (0) /* * Macros to access the 'props' allocation. */ #if defined(DUK_USE_HEAPPTR16) #define DUK_HOBJECT_GET_PROPS(heap,h) \ ((duk_uint8_t *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (h))->h_extra16)) #define DUK_HOBJECT_SET_PROPS(heap,h,x) do { \ ((duk_heaphdr *) (h))->h_extra16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \ } while (0) #else #define DUK_HOBJECT_GET_PROPS(heap,h) \ ((h)->props) #define DUK_HOBJECT_SET_PROPS(heap,h,x) do { \ (h)->props = (duk_uint8_t *) (x); \ } while (0) #endif #if defined(DUK_USE_HOBJECT_LAYOUT_1) /* LAYOUT 1 */ #define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \ ((duk_hstring **) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) \ )) #define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \ ((duk_propvalue *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_hstring *) \ )) #define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \ ((duk_uint8_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)) \ )) #define DUK_HOBJECT_A_GET_BASE(heap,h) \ ((duk_tval *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) \ )) #define DUK_HOBJECT_H_GET_BASE(heap,h) \ ((duk_uint32_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \ )) #define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \ ( \ (n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ (n_arr) * sizeof(duk_tval) + \ (n_hash) * sizeof(duk_uint32_t) \ ) #define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \ (set_e_k) = (duk_hstring **) (void *) (p_base); \ (set_e_pv) = (duk_propvalue *) (void *) ((set_e_k) + (n_ent)); \ (set_e_f) = (duk_uint8_t *) (void *) ((set_e_pv) + (n_ent)); \ (set_a) = (duk_tval *) (void *) ((set_e_f) + (n_ent)); \ (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \ } while (0) #elif defined(DUK_USE_HOBJECT_LAYOUT_2) /* LAYOUT 2 */ #if (DUK_USE_ALIGN_BY == 4) #define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((4 - (e_sz)) & 0x03) #elif (DUK_USE_ALIGN_BY == 8) #define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((8 - (e_sz)) & 0x07) #elif (DUK_USE_ALIGN_BY == 1) #define DUK_HOBJECT_E_FLAG_PADDING(e_sz) 0 #else #error invalid DUK_USE_ALIGN_BY #endif #define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \ ((duk_hstring **) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) \ )) #define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \ ((duk_propvalue *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) \ )) #define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \ ((duk_uint8_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)) \ )) #define DUK_HOBJECT_A_GET_BASE(heap,h) \ ((duk_tval *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))) \ )) #define DUK_HOBJECT_H_GET_BASE(heap,h) \ ((duk_uint32_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))) + \ DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \ )) #define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \ ( \ (n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ DUK_HOBJECT_E_FLAG_PADDING((n_ent)) + \ (n_arr) * sizeof(duk_tval) + \ (n_hash) * sizeof(duk_uint32_t) \ ) #define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \ (set_e_pv) = (duk_propvalue *) (void *) (p_base); \ (set_e_k) = (duk_hstring **) (void *) ((set_e_pv) + (n_ent)); \ (set_e_f) = (duk_uint8_t *) (void *) ((set_e_k) + (n_ent)); \ (set_a) = (duk_tval *) (void *) (((duk_uint8_t *) (set_e_f)) + \ sizeof(duk_uint8_t) * (n_ent) + \ DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \ (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \ } while (0) #elif defined(DUK_USE_HOBJECT_LAYOUT_3) /* LAYOUT 3 */ #define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \ ((duk_hstring **) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) + \ DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \ )) #define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \ ((duk_propvalue *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) \ )) #define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \ ((duk_uint8_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \ DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) + \ DUK_HOBJECT_GET_HSIZE((h)) * sizeof(duk_uint32_t) \ )) #define DUK_HOBJECT_A_GET_BASE(heap,h) \ ((duk_tval *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) \ )) #define DUK_HOBJECT_H_GET_BASE(heap,h) \ ((duk_uint32_t *) (void *) ( \ DUK_HOBJECT_GET_PROPS((heap), (h)) + \ DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \ DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \ )) #define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \ ( \ (n_ent) * (sizeof(duk_propvalue) + sizeof(duk_hstring *) + sizeof(duk_uint8_t)) + \ (n_arr) * sizeof(duk_tval) + \ (n_hash) * sizeof(duk_uint32_t) \ ) #define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \ (set_e_pv) = (duk_propvalue *) (void *) (p_base); \ (set_a) = (duk_tval *) (void *) ((set_e_pv) + (n_ent)); \ (set_e_k) = (duk_hstring **) (void *) ((set_a) + (n_arr)); \ (set_h) = (duk_uint32_t *) (void *) ((set_e_k) + (n_ent)); \ (set_e_f) = (duk_uint8_t *) (void *) ((set_h) + (n_hash)); \ } while (0) #else #error invalid hobject layout defines #endif /* hobject property layout */ #define DUK_HOBJECT_P_ALLOC_SIZE(h) \ DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE((h)), DUK_HOBJECT_GET_ASIZE((h)), DUK_HOBJECT_GET_HSIZE((h))) #define DUK_HOBJECT_E_GET_KEY(heap,h,i) (DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_GET_KEY_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_GET_VALUE(heap,h,i) (DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_GET_VALUE_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_GET_VALUE_TVAL(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v) #define DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v) #define DUK_HOBJECT_E_GET_VALUE_GETTER(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get) #define DUK_HOBJECT_E_GET_VALUE_GETTER_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get) #define DUK_HOBJECT_E_GET_VALUE_SETTER(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set) #define DUK_HOBJECT_E_GET_VALUE_SETTER_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set) #define DUK_HOBJECT_E_GET_FLAGS(heap,h,i) (DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_GET_FLAGS_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_A_GET_VALUE(heap,h,i) (DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_A_GET_VALUE_PTR(heap,h,i) (&DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_H_GET_INDEX(heap,h,i) (DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_H_GET_INDEX_PTR(heap,h,i) (&DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)]) #define DUK_HOBJECT_E_SET_KEY(heap,h,i,k) do { \ DUK_HOBJECT_E_GET_KEY((heap), (h), (i)) = (k); \ } while (0) #define DUK_HOBJECT_E_SET_VALUE(heap,h,i,v) do { \ DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)) = (v); \ } while (0) #define DUK_HOBJECT_E_SET_VALUE_TVAL(heap,h,i,v) do { \ DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v = (v); \ } while (0) #define DUK_HOBJECT_E_SET_VALUE_GETTER(heap,h,i,v) do { \ DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get = (v); \ } while (0) #define DUK_HOBJECT_E_SET_VALUE_SETTER(heap,h,i,v) do { \ DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set = (v); \ } while (0) #define DUK_HOBJECT_E_SET_FLAGS(heap,h,i,f) do { \ DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) = (duk_uint8_t) (f); \ } while (0) #define DUK_HOBJECT_A_SET_VALUE(heap,h,i,v) do { \ DUK_HOBJECT_A_GET_VALUE((heap), (h), (i)) = (v); \ } while (0) #define DUK_HOBJECT_A_SET_VALUE_TVAL(heap,h,i,v) \ DUK_HOBJECT_A_SET_VALUE((heap), (h), (i), (v)) /* alias for above */ #define DUK_HOBJECT_H_SET_INDEX(heap,h,i,v) do { \ DUK_HOBJECT_H_GET_INDEX((heap), (h), (i)) = (v); \ } while (0) #define DUK_HOBJECT_E_SET_FLAG_BITS(heap,h,i,mask) do { \ DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] |= (mask); \ } while (0) #define DUK_HOBJECT_E_CLEAR_FLAG_BITS(heap,h,i,mask) do { \ DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] &= ~(mask); \ } while (0) #define DUK_HOBJECT_E_SLOT_IS_WRITABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_WRITABLE) != 0) #define DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ENUMERABLE) != 0) #define DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0) #define DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ACCESSOR) != 0) #define DUK_HOBJECT_E_SLOT_SET_WRITABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_WRITABLE) #define DUK_HOBJECT_E_SLOT_SET_ENUMERABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ENUMERABLE) #define DUK_HOBJECT_E_SLOT_SET_CONFIGURABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_CONFIGURABLE) #define DUK_HOBJECT_E_SLOT_SET_ACCESSOR(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ACCESSOR) #define DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_WRITABLE) #define DUK_HOBJECT_E_SLOT_CLEAR_ENUMERABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ENUMERABLE) #define DUK_HOBJECT_E_SLOT_CLEAR_CONFIGURABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_CONFIGURABLE) #define DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ACCESSOR) #define DUK_PROPDESC_IS_WRITABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_WRITABLE) != 0) #define DUK_PROPDESC_IS_ENUMERABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_ENUMERABLE) != 0) #define DUK_PROPDESC_IS_CONFIGURABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0) #define DUK_PROPDESC_IS_ACCESSOR(p) (((p)->flags & DUK_PROPDESC_FLAG_ACCESSOR) != 0) #define DUK_HOBJECT_HASHIDX_UNUSED 0xffffffffUL #define DUK_HOBJECT_HASHIDX_DELETED 0xfffffffeUL /* * Macros for accessing size fields */ #if defined(DUK_USE_OBJSIZES16) #define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size16) #define DUK_HOBJECT_SET_ESIZE(h,v) do { (h)->e_size16 = (v); } while (0) #define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next16) #define DUK_HOBJECT_SET_ENEXT(h,v) do { (h)->e_next16 = (v); } while (0) #define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next16++) #define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size16) #define DUK_HOBJECT_SET_ASIZE(h,v) do { (h)->a_size16 = (v); } while (0) #if defined(DUK_USE_HOBJECT_HASH_PART) #define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size16) #define DUK_HOBJECT_SET_HSIZE(h,v) do { (h)->h_size16 = (v); } while (0) #else #define DUK_HOBJECT_GET_HSIZE(h) 0 #define DUK_HOBJECT_SET_HSIZE(h,v) do { DUK_ASSERT((v) == 0); } while (0) #endif #else #define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size) #define DUK_HOBJECT_SET_ESIZE(h,v) do { (h)->e_size = (v); } while (0) #define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next) #define DUK_HOBJECT_SET_ENEXT(h,v) do { (h)->e_next = (v); } while (0) #define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next++) #define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size) #define DUK_HOBJECT_SET_ASIZE(h,v) do { (h)->a_size = (v); } while (0) #if defined(DUK_USE_HOBJECT_HASH_PART) #define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size) #define DUK_HOBJECT_SET_HSIZE(h,v) do { (h)->h_size = (v); } while (0) #else #define DUK_HOBJECT_GET_HSIZE(h) 0 #define DUK_HOBJECT_SET_HSIZE(h,v) do { DUK_ASSERT((v) == 0); } while (0) #endif #endif /* * Misc */ /* Maximum prototype traversal depth. Sanity limit which handles e.g. * prototype loops (even complex ones like 1->2->3->4->2->3->4->2->3->4). */ #define DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY 10000L /* * ECMAScript [[Class]] */ /* range check not necessary because all 4-bit values are mapped */ #define DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(n) duk_class_number_to_stridx[(n)] #define DUK_HOBJECT_GET_CLASS_STRING(heap,h) \ DUK_HEAP_GET_STRING( \ (heap), \ DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(DUK_HOBJECT_GET_CLASS_NUMBER((h))) \ ) /* * Macros for property handling */ #if defined(DUK_USE_HEAPPTR16) #define DUK_HOBJECT_GET_PROTOTYPE(heap,h) \ ((duk_hobject *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->prototype16)) #define DUK_HOBJECT_SET_PROTOTYPE(heap,h,x) do { \ (h)->prototype16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \ } while (0) #else #define DUK_HOBJECT_GET_PROTOTYPE(heap,h) \ ((h)->prototype) #define DUK_HOBJECT_SET_PROTOTYPE(heap,h,x) do { \ (h)->prototype = (x); \ } while (0) #endif /* Set prototype, DECREF earlier value, INCREF new value (tolerating NULLs). */ #define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype_updref((thr), (h), (p)) /* Set initial prototype, assume NULL previous prototype, INCREF new value, * tolerate NULL. */ #define DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr,h,proto) do { \ duk_hthread *duk__thr = (thr); \ duk_hobject *duk__obj = (h); \ duk_hobject *duk__proto = (proto); \ DUK_UNREF(duk__thr); \ DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(duk__thr->heap, duk__obj) == NULL); \ DUK_HOBJECT_SET_PROTOTYPE(duk__thr->heap, duk__obj, duk__proto); \ DUK_HOBJECT_INCREF_ALLOWNULL(duk__thr, duk__proto); \ } while (0) /* * Finalizer check */ #if defined(DUK_USE_HEAPPTR16) #define DUK_HOBJECT_HAS_FINALIZER_FAST(heap,h) duk_hobject_has_finalizer_fast_raw((heap), (h)) #else #define DUK_HOBJECT_HAS_FINALIZER_FAST(heap,h) duk_hobject_has_finalizer_fast_raw((h)) #endif /* * Resizing and hash behavior */ /* Sanity limit on max number of properties (allocated, not necessarily used). * This is somewhat arbitrary, but if we're close to 2**32 properties some * algorithms will fail (e.g. hash size selection, next prime selection). * Also, we use negative array/entry table indices to indicate 'not found', * so anything above 0x80000000 will cause trouble now. */ #if defined(DUK_USE_OBJSIZES16) #define DUK_HOBJECT_MAX_PROPERTIES 0x0000ffffUL #else #define DUK_HOBJECT_MAX_PROPERTIES 0x3fffffffUL /* 2**30-1 ~= 1G properties */ #endif /* internal align target for props allocation, must be 2*n for some n */ #if (DUK_USE_ALIGN_BY == 4) #define DUK_HOBJECT_ALIGN_TARGET 4 #elif (DUK_USE_ALIGN_BY == 8) #define DUK_HOBJECT_ALIGN_TARGET 8 #elif (DUK_USE_ALIGN_BY == 1) #define DUK_HOBJECT_ALIGN_TARGET 1 #else #error invalid DUK_USE_ALIGN_BY #endif /* * PC-to-line constants */ #define DUK_PC2LINE_SKIP 64 /* maximum length for a SKIP-1 diffstream: 35 bits per entry, rounded up to bytes */ #define DUK_PC2LINE_MAX_DIFF_LENGTH (((DUK_PC2LINE_SKIP - 1) * 35 + 7) / 8) /* * Struct defs */ struct duk_propaccessor { duk_hobject *get; duk_hobject *set; }; union duk_propvalue { /* The get/set pointers could be 16-bit pointer compressed but it * would make no difference on 32-bit platforms because duk_tval is * 8 bytes or more anyway. */ duk_tval v; duk_propaccessor a; }; struct duk_propdesc { /* read-only values 'lifted' for ease of use */ duk_small_uint_t flags; duk_hobject *get; duk_hobject *set; /* for updating (all are set to < 0 for virtual properties) */ duk_int_t e_idx; /* prop index in 'entry part', < 0 if not there */ duk_int_t h_idx; /* prop index in 'hash part', < 0 if not there */ duk_int_t a_idx; /* prop index in 'array part', < 0 if not there */ }; struct duk_hobject { duk_heaphdr hdr; /* * 'props' contains {key,value,flags} entries, optional array entries, and * an optional hash lookup table for non-array entries in a single 'sliced' * allocation. There are several layout options, which differ slightly in * generated code size/speed and alignment/padding; duk_features.h selects * the layout used. * * Layout 1 (DUK_USE_HOBJECT_LAYOUT_1): * * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable) * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), * 0xffffffffUL = unused, 0xfffffffeUL = deleted * * Layout 2 (DUK_USE_HOBJECT_LAYOUT_2): * * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) * e_size * sizeof(duk_uint8_t) + pad bytes of entry flags (e_next gc reachable) * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), * 0xffffffffUL = unused, 0xfffffffeUL = deleted * * Layout 3 (DUK_USE_HOBJECT_LAYOUT_3): * * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), * 0xffffffffUL = unused, 0xfffffffeUL = deleted * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable) * * In layout 1, the 'e_next' count is rounded to 4 or 8 on platforms * requiring 4 or 8 byte alignment. This ensures proper alignment * for the entries, at the cost of memory footprint. However, it's * probably preferable to use another layout on such platforms instead. * * In layout 2, the key and value parts are swapped to avoid padding * the key array on platforms requiring alignment by 8. The flags part * is padded to get alignment for array entries. The 'e_next' count does * not need to be rounded as in layout 1. * * In layout 3, entry values and array values are always aligned properly, * and assuming pointers are at most 8 bytes, so are the entry keys. Hash * indices will be properly aligned (assuming pointers are at least 4 bytes). * Finally, flags don't need additional alignment. This layout provides * compact allocations without padding (even on platforms with alignment * requirements) at the cost of a bit slower lookups. * * Objects with few keys don't have a hash index; keys are looked up linearly, * which is cache efficient because the keys are consecutive. Larger objects * have a hash index part which contains integer indexes to the entries part. * * A single allocation reduces memory allocation overhead but requires more * work when any part needs to be resized. A sliced allocation for entries * makes linear key matching faster on most platforms (more locality) and * skimps on flags size (which would be followed by 3 bytes of padding in * most architectures if entries were placed in a struct). * * 'props' also contains internal properties distinguished with a non-BMP * prefix. Often used properties should be placed early in 'props' whenever * possible to make accessing them as fast a possible. */ #if defined(DUK_USE_HEAPPTR16) /* Located in duk_heaphdr h_extra16. Subclasses of duk_hobject (like * duk_hcompfunc) are not free to use h_extra16 for this reason. */ #else duk_uint8_t *props; #endif /* prototype: the only internal property lifted outside 'e' as it is so central */ #if defined(DUK_USE_HEAPPTR16) duk_uint16_t prototype16; #else duk_hobject *prototype; #endif #if defined(DUK_USE_OBJSIZES16) duk_uint16_t e_size16; duk_uint16_t e_next16; duk_uint16_t a_size16; #if defined(DUK_USE_HOBJECT_HASH_PART) duk_uint16_t h_size16; #endif #else duk_uint32_t e_size; /* entry part size */ duk_uint32_t e_next; /* index for next new key ([0,e_next[ are gc reachable) */ duk_uint32_t a_size; /* array part size (entirely gc reachable) */ #if defined(DUK_USE_HOBJECT_HASH_PART) duk_uint32_t h_size; /* hash part size or 0 if unused */ #endif #endif }; /* * Exposed data */ #if !defined(DUK_SINGLE_FILE) DUK_INTERNAL_DECL duk_uint8_t duk_class_number_to_stridx[32]; #endif /* !DUK_SINGLE_FILE */ /* * Prototypes */ /* alloc and init */ DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_harray *duk_harray_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hcompfunc *duk_hcompfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hnatfunc *duk_hnatfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hboundfunc *duk_hboundfunc_alloc(duk_heap *heap, duk_uint_t hobject_flags); #if defined(DUK_USE_BUFFEROBJECT_SUPPORT) DUK_INTERNAL_DECL duk_hbufobj *duk_hbufobj_alloc(duk_hthread *thr, duk_uint_t hobject_flags); #endif DUK_INTERNAL_DECL duk_hthread *duk_hthread_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hthread *duk_hthread_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hdecenv *duk_hdecenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hobjenv *duk_hobjenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags); DUK_INTERNAL_DECL duk_hproxy *duk_hproxy_alloc(duk_hthread *thr, duk_uint_t hobject_flags); /* resize */ DUK_INTERNAL_DECL void duk_hobject_realloc_props(duk_hthread *thr, duk_hobject *obj, duk_uint32_t new_e_size, duk_uint32_t new_a_size, duk_uint32_t new_h_size, duk_bool_t abandon_array); DUK_INTERNAL_DECL void duk_hobject_resize_entrypart(duk_hthread *thr, duk_hobject *obj, duk_uint32_t new_e_size); #if 0 /*unused*/ DUK_INTERNAL_DECL void duk_hobject_resize_arraypart(duk_hthread *thr, duk_hobject *obj, duk_uint32_t new_a_size); #endif /* low-level property functions */ DUK_INTERNAL_DECL duk_bool_t duk_hobject_find_existing_entry(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *e_idx, duk_int_t *h_idx); DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_hstring *key); DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_entry_tval_ptr_and_attrs(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_uint_t *out_attrs); DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_array_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_uarridx_t i); DUK_INTERNAL_DECL duk_bool_t duk_hobject_get_own_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags); /* XXX: when optimizing for guaranteed property slots, use a guaranteed * slot for internal value; this call can then access it directly. */ #define duk_hobject_get_internal_value_tval_ptr(heap,obj) \ duk_hobject_find_existing_entry_tval_ptr((heap), (obj), DUK_HEAP_STRING_INT_VALUE((heap))) /* core property functions */ DUK_INTERNAL_DECL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key); DUK_INTERNAL_DECL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_tval *tv_val, duk_bool_t throw_flag); DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_bool_t throw_flag); DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key); /* internal property functions */ #define DUK_DELPROP_FLAG_THROW (1U << 0) #define DUK_DELPROP_FLAG_FORCE (1U << 1) DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags); DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key); DUK_INTERNAL_DECL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags); DUK_INTERNAL_DECL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, duk_hobject *obj, duk_uarridx_t arr_idx, duk_small_uint_t flags); DUK_INTERNAL_DECL duk_size_t duk_hobject_get_length(duk_hthread *thr, duk_hobject *obj); #if defined(DUK_USE_HEAPPTR16) DUK_INTERNAL_DECL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_heap *heap, duk_hobject *obj); #else DUK_INTERNAL_DECL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_hobject *obj); #endif /* helpers for defineProperty() and defineProperties() */ DUK_INTERNAL_DECL void duk_hobject_prepare_property_descriptor(duk_hthread *thr, duk_idx_t idx_in, duk_uint_t *out_defprop_flags, duk_idx_t *out_idx_value, duk_hobject **out_getter, duk_hobject **out_setter); DUK_INTERNAL_DECL duk_bool_t duk_hobject_define_property_helper(duk_hthread *thr, duk_uint_t defprop_flags, duk_hobject *obj, duk_hstring *key, duk_idx_t idx_value, duk_hobject *get, duk_hobject *set, duk_bool_t throw_flag); /* Object built-in methods */ DUK_INTERNAL_DECL void duk_hobject_object_get_own_property_descriptor(duk_hthread *thr, duk_idx_t obj_idx); DUK_INTERNAL_DECL void duk_hobject_object_seal_freeze_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_freeze); DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_frozen); DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_ownprop_helper(duk_hthread *thr, duk_small_uint_t required_desc_flags); /* internal properties */ DUK_INTERNAL_DECL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobject *obj, duk_tval *tv); DUK_INTERNAL_DECL duk_hstring *duk_hobject_get_internal_value_string(duk_heap *heap, duk_hobject *obj); /* hobject management functions */ DUK_INTERNAL_DECL void duk_hobject_compact_props(duk_hthread *thr, duk_hobject *obj); /* ES2015 proxy */ #if defined(DUK_USE_ES6_PROXY) DUK_INTERNAL_DECL duk_bool_t duk_hobject_proxy_check(duk_hobject *obj, duk_hobject **out_target, duk_hobject **out_handler); DUK_INTERNAL_DECL duk_hobject *duk_hobject_resolve_proxy_target(duk_hobject *obj); #endif /* enumeration */ DUK_INTERNAL_DECL void duk_hobject_enumerator_create(duk_hthread *thr, duk_small_uint_t enum_flags); DUK_INTERNAL_DECL duk_ret_t duk_hobject_get_enumerated_keys(duk_hthread *thr, duk_small_uint_t enum_flags); DUK_INTERNAL_DECL duk_bool_t duk_hobject_enumerator_next(duk_hthread *thr, duk_bool_t get_value); /* macros */ DUK_INTERNAL_DECL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p); /* pc2line */ #if defined(DUK_USE_PC2LINE) DUK_INTERNAL_DECL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr *instrs, duk_uint_fast32_t length); DUK_INTERNAL_DECL duk_uint_fast32_t duk_hobject_pc2line_query(duk_hthread *thr, duk_idx_t idx_func, duk_uint_fast32_t pc); #endif /* misc */ DUK_INTERNAL_DECL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, duk_hobject *h, duk_hobject *p, duk_bool_t ignore_loop); #if !defined(DUK_USE_OBJECT_BUILTIN) /* These declarations are needed when related built-in is disabled and * genbuiltins.py won't automatically emit the declerations. */ DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_string(duk_hthread *thr); DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype(duk_hthread *thr); #endif #endif /* DUK_HOBJECT_H_INCLUDED */