diff options
Diffstat (limited to 'include/ruby/internal/value_type.h')
| -rw-r--r-- | include/ruby/internal/value_type.h | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/include/ruby/internal/value_type.h b/include/ruby/internal/value_type.h new file mode 100644 index 0000000000..be1b3559b6 --- /dev/null +++ b/include/ruby/internal/value_type.h @@ -0,0 +1,354 @@ +#ifndef RBIMPL_VALUE_TYPE_H /*-*-C++-*-vi:se ft=cpp:*/ +#define RBIMPL_VALUE_TYPE_H +/** + * @file + * @author Ruby developers <ruby-core@ruby-lang.org> + * @copyright This file is a part of the programming language Ruby. + * Permission is hereby granted, to either redistribute and/or + * modify this file, provided that the conditions mentioned in the + * file COPYING are met. Consult the file for details. + * @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are + * implementation details. Don't take them as canon. They could + * rapidly appear then vanish. The name (path) of this header file + * is also an implementation detail. Do not expect it to persist + * at the place it is now. Developers are free to move it anywhere + * anytime at will. + * @note To ruby-core: remember that this header can be possibly + * recursively included from extension libraries written in C++. + * Do not expect for instance `__VA_ARGS__` is always available. + * We assume C99 for ruby itself but we don't assume languages of + * extension libraries. They could be written in C++98. + * @brief Defines enum ::ruby_value_type. + */ +#include "ruby/impl/assume.h" +#include "ruby/impl/attr/artificial.h" +#include "ruby/impl/attr/cold.h" +#include "ruby/impl/attr/enum_extensibility.h" +#include "ruby/impl/attr/forceinline.h" +#include "ruby/impl/attr/pure.h" +#include "ruby/impl/cast.h" +#include "ruby/impl/constant_p.h" +#include "ruby/impl/core/rbasic.h" +#include "ruby/impl/dllexport.h" +#include "ruby/impl/has/builtin.h" +#include "ruby/impl/special_consts.h" +#include "ruby/impl/stdbool.h" +#include "ruby/impl/value.h" +#include "ruby/assert.h" + +#if defined(T_DATA) +/* + * :!BEWARE!: (Recent?) Solaris' <nfs/nfs.h> have conflicting definition of + * T_DATA. Let us stop here. Please have a workaround like this: + * + * ```C + * #include <ruby/ruby.h> // <- Include this one first. + * #undef T_DATA // <- ... and stick to RUBY_T_DATA forever. + * #include <nfs/nfs.h> // <- OS-provided T_DATA introduced. + * ``` + * + * See also [ruby-core:4261] + */ +# error Bail out due to conflicting definition of T_DATA. +#endif + +#define T_ARRAY RUBY_T_ARRAY +#define T_BIGNUM RUBY_T_BIGNUM +#define T_CLASS RUBY_T_CLASS +#define T_COMPLEX RUBY_T_COMPLEX +#define T_DATA RUBY_T_DATA +#define T_FALSE RUBY_T_FALSE +#define T_FILE RUBY_T_FILE +#define T_FIXNUM RUBY_T_FIXNUM +#define T_FLOAT RUBY_T_FLOAT +#define T_HASH RUBY_T_HASH +#define T_ICLASS RUBY_T_ICLASS +#define T_IMEMO RUBY_T_IMEMO +#define T_MASK RUBY_T_MASK +#define T_MATCH RUBY_T_MATCH +#define T_MODULE RUBY_T_MODULE +#define T_MOVED RUBY_T_MOVED +#define T_NIL RUBY_T_NIL +#define T_NODE RUBY_T_NODE +#define T_NONE RUBY_T_NONE +#define T_OBJECT RUBY_T_OBJECT +#define T_RATIONAL RUBY_T_RATIONAL +#define T_REGEXP RUBY_T_REGEXP +#define T_STRING RUBY_T_STRING +#define T_STRUCT RUBY_T_STRUCT +#define T_SYMBOL RUBY_T_SYMBOL +#define T_TRUE RUBY_T_TRUE +#define T_UNDEF RUBY_T_UNDEF +#define T_ZOMBIE RUBY_T_ZOMBIE + +#define BUILTIN_TYPE RB_BUILTIN_TYPE +#define DYNAMIC_SYM_P RB_DYNAMIC_SYM_P +#define RB_INTEGER_TYPE_P rb_integer_type_p +#define SYMBOL_P RB_SYMBOL_P +#define rb_type_p RB_TYPE_P + +/** @cond INTERNAL_MACRO */ +#define RB_BUILTIN_TYPE RB_BUILTIN_TYPE +#define RB_DYNAMIC_SYM_P RB_DYNAMIC_SYM_P +#define RB_FLOAT_TYPE_P RB_FLOAT_TYPE_P +#define RB_SYMBOL_P RB_SYMBOL_P +#define RB_TYPE_P RB_TYPE_P +#define Check_Type Check_Type + +#if RUBY_NDEBUG +# define RBIMPL_ASSERT_TYPE(v, t) RBIMPL_ASSERT_OR_ASSUME(RB_TYPE_P((v), (t))) +#else +# define RBIMPL_ASSERT_TYPE Check_Type +#endif +/** @endcond */ + +#define TYPE(_) RBIMPL_CAST((int)rb_type(_)) + +/** C-level type of an object. */ +enum +RBIMPL_ATTR_ENUM_EXTENSIBILITY(closed) +ruby_value_type { + RUBY_T_NONE = 0x00, /**< Non-object (sweeped etc.) */ + + RUBY_T_OBJECT = 0x01, /**< @see struct ::RObject */ + RUBY_T_CLASS = 0x02, /**< @see struct ::RClass and ::rb_cClass */ + RUBY_T_MODULE = 0x03, /**< @see struct ::RClass and ::rb_cModule */ + RUBY_T_FLOAT = 0x04, /**< @see struct ::RFloat */ + RUBY_T_STRING = 0x05, /**< @see struct ::RString */ + RUBY_T_REGEXP = 0x06, /**< @see struct ::RRegexp */ + RUBY_T_ARRAY = 0x07, /**< @see struct ::RArray */ + RUBY_T_HASH = 0x08, /**< @see struct ::RHash */ + RUBY_T_STRUCT = 0x09, /**< @see struct ::RStruct */ + RUBY_T_BIGNUM = 0x0a, /**< @see struct ::RBignum */ + RUBY_T_FILE = 0x0b, /**< @see struct ::RFile */ + RUBY_T_DATA = 0x0c, /**< @see struct ::RTypedData */ + RUBY_T_MATCH = 0x0d, /**< @see struct ::RMatch */ + RUBY_T_COMPLEX = 0x0e, /**< @see struct ::RComplex */ + RUBY_T_RATIONAL = 0x0f, /**< @see struct ::RRational */ + + RUBY_T_NIL = 0x11, /**< @see ::RUBY_Qnil */ + RUBY_T_TRUE = 0x12, /**< @see ::RUBY_Qfalse */ + RUBY_T_FALSE = 0x13, /**< @see ::RUBY_Qtrue */ + RUBY_T_SYMBOL = 0x14, /**< @see struct ::RSymbol */ + RUBY_T_FIXNUM = 0x15, /**< Integers formerly known as Fixnums. */ + RUBY_T_UNDEF = 0x16, /**< @see ::RUBY_Qundef */ + + RUBY_T_IMEMO = 0x1a, /**< @see struct ::RIMemo */ + RUBY_T_NODE = 0x1b, /**< @see struct ::RNode */ + RUBY_T_ICLASS = 0x1c, /**< Hidden classes known as IClasses. */ + RUBY_T_ZOMBIE = 0x1d, /**< @see struct ::RZombie */ + RUBY_T_MOVED = 0x1e, /**< @see struct ::RMoved */ + + RUBY_T_MASK = 0x1f +}; + +RBIMPL_SYMBOL_EXPORT_BEGIN() +RBIMPL_ATTR_COLD() +void rb_check_type(VALUE obj, int t); +RBIMPL_SYMBOL_EXPORT_END() + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +static inline enum ruby_value_type +RB_BUILTIN_TYPE(VALUE obj) +{ + RBIMPL_ASSERT_OR_ASSUME(! RB_SPECIAL_CONST_P(obj)); + + VALUE ret = RBASIC(obj)->flags & RUBY_T_MASK; + return RBIMPL_CAST((enum ruby_value_type)ret); +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +static inline bool +rb_integer_type_p(VALUE obj) +{ + if (RB_FIXNUM_P(obj)) { + return true; + } + else if (RB_SPECIAL_CONST_P(obj)) { + return false; + } + else { + return RB_BUILTIN_TYPE(obj) == RUBY_T_BIGNUM; + } +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +static inline enum ruby_value_type +rb_type(VALUE obj) +{ + if (! RB_SPECIAL_CONST_P(obj)) { + return RB_BUILTIN_TYPE(obj); + } + else if (obj == RUBY_Qfalse) { + return RUBY_T_FALSE; + } + else if (obj == RUBY_Qnil) { + return RUBY_T_NIL; + } + else if (obj == RUBY_Qtrue) { + return RUBY_T_TRUE; + } + else if (obj == RUBY_Qundef) { + return RUBY_T_UNDEF; + } + else if (RB_FIXNUM_P(obj)) { + return RUBY_T_FIXNUM; + } + else if (RB_STATIC_SYM_P(obj)) { + return RUBY_T_SYMBOL; + } + else { + RBIMPL_ASSUME(RB_FLONUM_P(obj)); + return RUBY_T_FLOAT; + } +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +static inline bool +RB_FLOAT_TYPE_P(VALUE obj) +{ + if (RB_FLONUM_P(obj)) { + return true; + } + else if (RB_SPECIAL_CONST_P(obj)) { + return false; + } + else { + return RB_BUILTIN_TYPE(obj) == RUBY_T_FLOAT; + } +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +static inline bool +RB_DYNAMIC_SYM_P(VALUE obj) +{ + if (RB_SPECIAL_CONST_P(obj)) { + return false; + } + else { + return RB_BUILTIN_TYPE(obj) == RUBY_T_SYMBOL; + } +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +static inline bool +RB_SYMBOL_P(VALUE obj) +{ + return RB_STATIC_SYM_P(obj) || RB_DYNAMIC_SYM_P(obj); +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +RBIMPL_ATTR_FORCEINLINE() +static bool +rbimpl_RB_TYPE_P_fastpath(VALUE obj, enum ruby_value_type t) +{ + if (t == RUBY_T_TRUE) { + return obj == RUBY_Qtrue; + } + else if (t == RUBY_T_FALSE) { + return obj == RUBY_Qfalse; + } + else if (t == RUBY_T_NIL) { + return obj == RUBY_Qnil; + } + else if (t == RUBY_T_UNDEF) { + return obj == RUBY_Qundef; + } + else if (t == RUBY_T_FIXNUM) { + return RB_FIXNUM_P(obj); + } + else if (t == RUBY_T_SYMBOL) { + return RB_SYMBOL_P(obj); + } + else if (t == RUBY_T_FLOAT) { + return RB_FLOAT_TYPE_P(obj); + } + else if (RB_SPECIAL_CONST_P(obj)) { + return false; + } + else if (t == RB_BUILTIN_TYPE(obj)) { + return true; + } + else { + return false; + } +} + +RBIMPL_ATTR_PURE_ON_NDEBUG() +RBIMPL_ATTR_ARTIFICIAL() +static inline bool +RB_TYPE_P(VALUE obj, enum ruby_value_type t) +{ + if (RBIMPL_CONSTANT_P(t)) { + return rbimpl_RB_TYPE_P_fastpath(obj, t); + } + else { + return t == rb_type(obj); + } +} + +/** @cond INTERNAL_MACRO */ +/* Clang, unlike GCC, cannot propagate __builtin_constant_p beyond function + * boundary. */ +#if defined(__clang__) +# undef RB_TYPE_P +# define RB_TYPE_P(obj, t) \ + (RBIMPL_CONSTANT_P(t) ? \ + rbimpl_RB_TYPE_P_fastpath((obj), (t)) : \ + (RB_TYPE_P)((obj), (t))) +#endif + +/* clang 3.x (4.2 compatible) can't eliminate CSE of RB_BUILTIN_TYPE + * in inline function and caller function + * See also 8998c06461ea0bef11b3aeb30b6d2ab71c8762ba + */ +#if RBIMPL_COMPILER_BEFORE(Clang, 4, 0, 0) +# undef rb_integer_type_p +# define rb_integer_type_p(obj) \ + __extension__ ({ \ + const VALUE integer_type_obj = (obj); \ + (RB_FIXNUM_P(integer_type_obj) || \ + (!RB_SPECIAL_CONST_P(integer_type_obj) && \ + RB_BUILTIN_TYPE(integer_type_obj) == RUBY_T_BIGNUM)); \ + }) +#endif +/** @endcond */ + +RBIMPL_ATTR_PURE() +RBIMPL_ATTR_ARTIFICIAL() +/* Defined in ruby/impl/core/rtypeddata.h */ +static inline bool rbimpl_rtypeddata_p(VALUE obj); + +RBIMPL_ATTR_ARTIFICIAL() +static inline void +Check_Type(VALUE v, enum ruby_value_type t) +{ + if (RB_UNLIKELY(! RB_TYPE_P(v, t))) { + goto slowpath; + } + else if (t != RUBY_T_DATA) { + goto fastpath; + } + else if (rbimpl_rtypeddata_p(v)) { + /* The intention itself is not necessarily clear to me, but at least it + * is intentional to rule out typed data here. See commit + * a7c32bf81d3391cfb78cfda278f469717d0fb794. */ + goto slowpath; + } + else { + goto fastpath; + } + + fastpath: + return; + + slowpath: /* <- :TODO: mark this label as cold. */ + rb_check_type(v, t); +} + +#endif /* RBIMPL_VALUE_TYPE_H */ |