diff options
Diffstat (limited to 'vendor/include/mruby/mruby.h')
| -rw-r--r-- | vendor/include/mruby/mruby.h | 1514 |
1 files changed, 1514 insertions, 0 deletions
diff --git a/vendor/include/mruby/mruby.h b/vendor/include/mruby/mruby.h new file mode 100644 index 0000000..3e92021 --- /dev/null +++ b/vendor/include/mruby/mruby.h @@ -0,0 +1,1514 @@ +/* +** mruby - An embeddable Ruby implementation +** +** Copyright (c) mruby developers 2010-2021 +** +** Permission is hereby granted, free of charge, to any person obtaining +** a copy of this software and associated documentation files (the +** "Software"), to deal in the Software without restriction, including +** without limitation the rights to use, copy, modify, merge, publish, +** distribute, sublicense, and/or sell copies of the Software, and to +** permit persons to whom the Software is furnished to do so, subject to +** the following conditions: +** +** The above copyright notice and this permission notice shall be +** included in all copies or substantial portions of the Software. +** +** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +** SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +** +** [ MIT license: https://www.opensource.org/licenses/mit-license.php ] +*/ + +/** + * @file mruby.h + */ + +#ifndef MRUBY_H +#define MRUBY_H + +#ifdef __cplusplus +#define __STDC_LIMIT_MACROS +#define __STDC_CONSTANT_MACROS +#define __STDC_FORMAT_MACROS +#endif + +#include <stdarg.h> +#include <stdint.h> +#include <stddef.h> +#include <limits.h> + +#ifdef __cplusplus +#ifndef UINTPTR_MAX +#error Must be placed `#include <mruby.h>` before `#include <stdint.h>` +#endif +#ifndef SIZE_MAX +#ifdef __SIZE_MAX__ +#define SIZE_MAX __SIZE_MAX__ +#else +#define SIZE_MAX std::numeric_limits<size_t>::max() +#endif +#endif +#endif + +#ifdef _MSC_VER +# define __func__ __FUNCTION__ +#endif + +#ifdef MRB_DEBUG +#include <assert.h> +#define mrb_assert(p) assert(p) +#define mrb_assert_int_fit(t1,n,t2,max) assert((n)>=0 && ((sizeof(n)<=sizeof(t2))||(n<=(t1)(max)))) +#else +#define mrb_assert(p) ((void)0) +#define mrb_assert_int_fit(t1,n,t2,max) ((void)0) +#endif + +#if (defined __cplusplus && __cplusplus >= 201703L) +# define mrb_static_assert(...) static_assert(__VA_ARGS__) +# define mrb_static_assert1(exp) static_assert(exp) +# define mrb_static_assert2(exp, str) static_assert(exp, str) +#elif (defined __cplusplus && __cplusplus >= 201103L) || \ + (defined _MSC_VER) || \ + (defined __GXX_EXPERIMENTAL_CXX0X__) /* for old G++/Clang++ */ +# define mrb_static_assert2(exp, str) static_assert(exp, str) +#elif defined __STDC_VERSION__ && \ + ((__STDC_VERSION__ >= 201112L) || \ + (defined __GNUC__ && __GNUC__ * 100 + __GNUC_MINOR__ >= 406)) +# define mrb_static_assert2(exp, str) _Static_assert(exp, str) +#else +# /* alternative implementation of static_assert() */ +# define _mrb_static_assert_cat0(a, b) a##b +# define _mrb_static_assert_cat(a, b) _mrb_static_assert_cat0(a, b) +# ifdef __COUNTER__ +# define _mrb_static_assert_id(prefix) _mrb_static_assert_cat(prefix, __COUNTER__) +# else +# define _mrb_static_assert_id(prefix) _mrb_static_assert_cat(prefix, __LINE__) +# endif +# define mrb_static_assert2(exp, str) \ + struct _mrb_static_assert_id(_mrb_static_assert_) { char x[(exp) ? 1 : -1]; } +#endif + +#ifndef mrb_static_assert +# define mrb_static_assert1(exp) mrb_static_assert2(exp, #exp) +# define mrb_static_assert_expand(...) __VA_ARGS__ /* for MSVC behaviour - https://stackoverflow.com/q/5530505 */ +# define mrb_static_assert_selector(a, b, name, ...) name +/** + * The `mrb_static_assert()` macro function takes one or two arguments. + * + * !!!c + * mrb_static_assert(expect_condition); + * mrb_static_assert(expect_condition, error_message); + */ +# define mrb_static_assert(...) \ + mrb_static_assert_expand(mrb_static_assert_selector(__VA_ARGS__, mrb_static_assert2, mrb_static_assert1, _)(__VA_ARGS__)) +#endif + +#define mrb_static_assert_powerof2(num) mrb_static_assert((num) > 0 && (num) == ((num) & -(num)), "need power of 2 for " #num) + +#include "mrbconf.h" + +#include <mruby/common.h> +#include <mruby/value.h> +#include <mruby/gc.h> +#include <mruby/version.h> + +#ifndef MRB_NO_FLOAT +#include <math.h> +#include <float.h> +#ifndef FLT_EPSILON +#define FLT_EPSILON (1.19209290e-07f) +#endif +#ifndef DBL_EPSILON +#define DBL_EPSILON ((double)2.22044604925031308085e-16L) +#endif +#ifndef LDBL_EPSILON +#define LDBL_EPSILON (1.08420217248550443401e-19L) +#endif + +#ifdef MRB_USE_FLOAT32 +#define MRB_FLOAT_EPSILON FLT_EPSILON +#else +#define MRB_FLOAT_EPSILON DBL_EPSILON +#endif +#endif + +/** + * MRuby C API entry point + */ +MRB_BEGIN_DECL + +typedef uint8_t mrb_code; + +/** + * \class mrb_aspec + * + * Specifies the number of arguments a function takes + * + * Example: `MRB_ARGS_REQ(2) | MRB_ARGS_OPT(1)` for a method that expects 2..3 arguments + */ +typedef uint32_t mrb_aspec; + +struct mrb_irep; +struct mrb_state; + +/** + * Function pointer type of custom allocator used in @see mrb_open_allocf. + * + * The function pointing it must behave similarly as realloc except: + * - If ptr is NULL it must allocate new space. + * - If s is NULL, ptr must be freed. + * + * See @see mrb_default_allocf for the default implementation. + */ +typedef void* (*mrb_allocf) (struct mrb_state *mrb, void*, size_t, void *ud); + +#ifndef MRB_FIXED_STATE_ATEXIT_STACK_SIZE +#define MRB_FIXED_STATE_ATEXIT_STACK_SIZE 5 +#endif + +typedef struct { + uint8_t n:4; /* (15=*) c=n|nk<<4 */ + uint8_t nk:4; /* (15=*) */ + uint8_t cci; /* called from C function */ + mrb_sym mid; + const struct RProc *proc; + mrb_value *stack; + const mrb_code *pc; /* current address on iseq of this proc */ + union { + struct REnv *env; + struct RClass *target_class; + } u; +} mrb_callinfo; + +enum mrb_fiber_state { + MRB_FIBER_CREATED = 0, + MRB_FIBER_RUNNING, + MRB_FIBER_RESUMED, + MRB_FIBER_SUSPENDED, + MRB_FIBER_TRANSFERRED, + MRB_FIBER_TERMINATED, +}; + +struct mrb_context { + struct mrb_context *prev; + + mrb_value *stbase, *stend; /* stack of virtual machine */ + + mrb_callinfo *ci; + mrb_callinfo *cibase, *ciend; + + enum mrb_fiber_state status : 4; + mrb_bool vmexec : 1; + struct RFiber *fib; +}; + +#ifdef MRB_METHOD_CACHE_SIZE +# undef MRB_NO_METHOD_CACHE +mrb_static_assert_powerof2(MRB_METHOD_CACHE_SIZE); +#else +/* default method cache size: 256 */ +/* cache size needs to be power of 2 */ +# define MRB_METHOD_CACHE_SIZE (1<<8) +#endif + +/** + * Function pointer type for a function callable by mruby. + * + * The arguments to the function are stored on the mrb_state. To get them see mrb_get_args + * + * @param mrb The mruby state + * @param self The self object + * @return [mrb_value] The function's return value + */ +typedef mrb_value (*mrb_func_t)(struct mrb_state *mrb, mrb_value self); + +#ifndef MRB_USE_METHOD_T_STRUCT +typedef uintptr_t mrb_method_t; +#else +typedef struct { + uint8_t flags; + union { + struct RProc *proc; + mrb_func_t func; + }; +} mrb_method_t; +#endif + +#ifndef MRB_NO_METHOD_CACHE +struct mrb_cache_entry { + struct RClass *c, *c0; + mrb_sym mid; + mrb_method_t m; +}; +#endif + +struct mrb_jmpbuf; + +typedef void (*mrb_atexit_func)(struct mrb_state*); + +typedef struct mrb_state { + struct mrb_jmpbuf *jmp; + + mrb_allocf allocf; /* memory allocation function */ + void *allocf_ud; /* auxiliary data of allocf */ + + struct mrb_context *c; + struct mrb_context *root_c; + struct iv_tbl *globals; /* global variable table */ + + struct RObject *exc; /* exception */ + + struct RObject *top_self; + struct RClass *object_class; /* Object class */ + struct RClass *class_class; + struct RClass *module_class; + struct RClass *proc_class; + struct RClass *string_class; + struct RClass *array_class; + struct RClass *hash_class; + struct RClass *range_class; + +#ifndef MRB_NO_FLOAT + struct RClass *float_class; +#endif + struct RClass *integer_class; + struct RClass *true_class; + struct RClass *false_class; + struct RClass *nil_class; + struct RClass *symbol_class; + struct RClass *kernel_module; + + mrb_gc gc; + +#ifndef MRB_NO_METHOD_CACHE + struct mrb_cache_entry cache[MRB_METHOD_CACHE_SIZE]; +#endif + + mrb_sym symidx; + const char **symtbl; + uint8_t *symlink; + uint8_t *symflags; + mrb_sym symhash[256]; + size_t symcapa; +#ifndef MRB_USE_ALL_SYMBOLS + char symbuf[8]; /* buffer for small symbol names */ +#endif + +#ifdef MRB_USE_DEBUG_HOOK + void (*code_fetch_hook)(struct mrb_state* mrb, const struct mrb_irep *irep, const mrb_code *pc, mrb_value *regs); + void (*debug_op_hook)(struct mrb_state* mrb, const struct mrb_irep *irep, const mrb_code *pc, mrb_value *regs); +#endif + +#ifdef MRB_BYTECODE_DECODE_OPTION + mrb_code (*bytecode_decoder)(struct mrb_state* mrb, mrb_code code); +#endif + + struct RClass *eException_class; + struct RClass *eStandardError_class; + struct RObject *nomem_err; /* pre-allocated NoMemoryError */ + struct RObject *stack_err; /* pre-allocated SysStackError */ +#ifdef MRB_GC_FIXED_ARENA + struct RObject *arena_err; /* pre-allocated arena overflow error */ +#endif + + void *ud; /* auxiliary data */ + +#ifdef MRB_FIXED_STATE_ATEXIT_STACK + mrb_atexit_func atexit_stack[MRB_FIXED_STATE_ATEXIT_STACK_SIZE]; +#else + mrb_atexit_func *atexit_stack; +#endif + uint16_t atexit_stack_len; +} mrb_state; + +/** + * Defines a new class. + * + * If you're creating a gem it may look something like this: + * + * !!!c + * void mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_class; + * example_class = mrb_define_class(mrb, "Example_Class", mrb->object_class); + * } + * + * void mrb_example_gem_final(mrb_state* mrb) { + * //free(TheAnimals); + * } + * + * @param mrb The current mruby state. + * @param name The name of the defined class. + * @param super The new class parent. + * @return [struct RClass *] Reference to the newly defined class. + * @see mrb_define_class_under + */ +MRB_API struct RClass *mrb_define_class(mrb_state *mrb, const char *name, struct RClass *super); +MRB_API struct RClass *mrb_define_class_id(mrb_state *mrb, mrb_sym name, struct RClass *super); + +/** + * Defines a new module. + * + * @param mrb The current mruby state. + * @param name The name of the module. + * @return [struct RClass *] Reference to the newly defined module. + */ +MRB_API struct RClass *mrb_define_module(mrb_state *mrb, const char *name); +MRB_API struct RClass *mrb_define_module_id(mrb_state *mrb, mrb_sym name); + +MRB_API mrb_value mrb_singleton_class(mrb_state *mrb, mrb_value val); +MRB_API struct RClass *mrb_singleton_class_ptr(mrb_state *mrb, mrb_value val); + +/** + * Include a module in another class or module. + * Equivalent to: + * + * module B + * include A + * end + * @param mrb The current mruby state. + * @param cla A reference to module or a class. + * @param included A reference to the module to be included. + */ +MRB_API void mrb_include_module(mrb_state *mrb, struct RClass *cla, struct RClass *included); + +/** + * Prepends a module in another class or module. + * + * Equivalent to: + * module B + * prepend A + * end + * @param mrb The current mruby state. + * @param cla A reference to module or a class. + * @param prepended A reference to the module to be prepended. + */ +MRB_API void mrb_prepend_module(mrb_state *mrb, struct RClass *cla, struct RClass *prepended); + +/** + * Defines a global function in ruby. + * + * If you're creating a gem it may look something like this + * + * Example: + * + * mrb_value example_method(mrb_state* mrb, mrb_value self) + * { + * puts("Executing example command!"); + * return self; + * } + * + * void mrb_example_gem_init(mrb_state* mrb) + * { + * mrb_define_method(mrb, mrb->kernel_module, "example_method", example_method, MRB_ARGS_NONE()); + * } + * + * @param mrb The MRuby state reference. + * @param cla The class pointer where the method will be defined. + * @param name The name of the method being defined. + * @param func The function pointer to the method definition. + * @param aspec The method parameters declaration. + */ +MRB_API void mrb_define_method(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t func, mrb_aspec aspec); +MRB_API void mrb_define_method_id(mrb_state *mrb, struct RClass *c, mrb_sym mid, mrb_func_t func, mrb_aspec aspec); + +/** + * Defines a class method. + * + * Example: + * + * # Ruby style + * class Foo + * def Foo.bar + * end + * end + * // C style + * mrb_value bar_method(mrb_state* mrb, mrb_value self){ + * return mrb_nil_value(); + * } + * void mrb_example_gem_init(mrb_state* mrb){ + * struct RClass *foo; + * foo = mrb_define_class(mrb, "Foo", mrb->object_class); + * mrb_define_class_method(mrb, foo, "bar", bar_method, MRB_ARGS_NONE()); + * } + * @param mrb The MRuby state reference. + * @param cla The class where the class method will be defined. + * @param name The name of the class method being defined. + * @param fun The function pointer to the class method definition. + * @param aspec The method parameters declaration. + */ +MRB_API void mrb_define_class_method(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t fun, mrb_aspec aspec); +MRB_API void mrb_define_class_method_id(mrb_state *mrb, struct RClass *cla, mrb_sym name, mrb_func_t fun, mrb_aspec aspec); + +/** + * Defines a singleton method + * + * @see mrb_define_class_method + */ +MRB_API void mrb_define_singleton_method(mrb_state *mrb, struct RObject *cla, const char *name, mrb_func_t fun, mrb_aspec aspec); +MRB_API void mrb_define_singleton_method_id(mrb_state *mrb, struct RObject *cla, mrb_sym name, mrb_func_t fun, mrb_aspec aspec); + +/** + * Defines a module function. + * + * Example: + * + * # Ruby style + * module Foo + * def Foo.bar + * end + * end + * // C style + * mrb_value bar_method(mrb_state* mrb, mrb_value self){ + * return mrb_nil_value(); + * } + * void mrb_example_gem_init(mrb_state* mrb){ + * struct RClass *foo; + * foo = mrb_define_module(mrb, "Foo"); + * mrb_define_module_function(mrb, foo, "bar", bar_method, MRB_ARGS_NONE()); + * } + * @param mrb The MRuby state reference. + * @param cla The module where the module function will be defined. + * @param name The name of the module function being defined. + * @param fun The function pointer to the module function definition. + * @param aspec The method parameters declaration. + */ +MRB_API void mrb_define_module_function(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t fun, mrb_aspec aspec); +MRB_API void mrb_define_module_function_id(mrb_state *mrb, struct RClass *cla, mrb_sym name, mrb_func_t fun, mrb_aspec aspec); + +/** + * Defines a constant. + * + * Example: + * + * # Ruby style + * class ExampleClass + * AGE = 22 + * end + * // C style + * #include <stdio.h> + * #include <mruby.h> + * + * void + * mrb_example_gem_init(mrb_state* mrb){ + * mrb_define_const(mrb, mrb->kernel_module, "AGE", mrb_fixnum_value(22)); + * } + * + * mrb_value + * mrb_example_gem_final(mrb_state* mrb){ + * } + * @param mrb The MRuby state reference. + * @param cla A class or module the constant is defined in. + * @param name The name of the constant being defined. + * @param val The value for the constant. + */ +MRB_API void mrb_define_const(mrb_state* mrb, struct RClass* cla, const char *name, mrb_value val); +MRB_API void mrb_define_const_id(mrb_state* mrb, struct RClass* cla, mrb_sym name, mrb_value val); + +/** + * Undefines a method. + * + * Example: + * + * # Ruby style + * + * class ExampleClassA + * def example_method + * "example" + * end + * end + * ExampleClassA.new.example_method # => example + * + * class ExampleClassB < ExampleClassA + * undef_method :example_method + * end + * + * ExampleClassB.new.example_method # => undefined method 'example_method' for ExampleClassB (NoMethodError) + * + * // C style + * #include <stdio.h> + * #include <mruby.h> + * + * mrb_value + * mrb_example_method(mrb_state *mrb){ + * return mrb_str_new_lit(mrb, "example"); + * } + * + * void + * mrb_example_gem_init(mrb_state* mrb){ + * struct RClass *example_class_a; + * struct RClass *example_class_b; + * struct RClass *example_class_c; + * + * example_class_a = mrb_define_class(mrb, "ExampleClassA", mrb->object_class); + * mrb_define_method(mrb, example_class_a, "example_method", mrb_example_method, MRB_ARGS_NONE()); + * example_class_b = mrb_define_class(mrb, "ExampleClassB", example_class_a); + * example_class_c = mrb_define_class(mrb, "ExampleClassC", example_class_b); + * mrb_undef_method(mrb, example_class_c, "example_method"); + * } + * + * mrb_example_gem_final(mrb_state* mrb){ + * } + * @param mrb The mruby state reference. + * @param cla The class the method will be undefined from. + * @param name The name of the method to be undefined. + */ +MRB_API void mrb_undef_method(mrb_state *mrb, struct RClass *cla, const char *name); +MRB_API void mrb_undef_method_id(mrb_state*, struct RClass*, mrb_sym); + +/** + * Undefine a class method. + * Example: + * + * # Ruby style + * class ExampleClass + * def self.example_method + * "example" + * end + * end + * + * ExampleClass.example_method + * + * // C style + * #include <stdio.h> + * #include <mruby.h> + * + * mrb_value + * mrb_example_method(mrb_state *mrb){ + * return mrb_str_new_lit(mrb, "example"); + * } + * + * void + * mrb_example_gem_init(mrb_state* mrb){ + * struct RClass *example_class; + * example_class = mrb_define_class(mrb, "ExampleClass", mrb->object_class); + * mrb_define_class_method(mrb, example_class, "example_method", mrb_example_method, MRB_ARGS_NONE()); + * mrb_undef_class_method(mrb, example_class, "example_method"); + * } + * + * void + * mrb_example_gem_final(mrb_state* mrb){ + * } + * @param mrb The mruby state reference. + * @param cls A class the class method will be undefined from. + * @param name The name of the class method to be undefined. + */ +MRB_API void mrb_undef_class_method(mrb_state *mrb, struct RClass *cls, const char *name); +MRB_API void mrb_undef_class_method_id(mrb_state *mrb, struct RClass *cls, mrb_sym name); + +/** + * Initialize a new object instance of c class. + * + * Example: + * + * # Ruby style + * class ExampleClass + * end + * + * p ExampleClass # => #<ExampleClass:0x9958588> + * // C style + * #include <stdio.h> + * #include <mruby.h> + * + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_class; + * mrb_value obj; + * example_class = mrb_define_class(mrb, "ExampleClass", mrb->object_class); # => class ExampleClass; end + * obj = mrb_obj_new(mrb, example_class, 0, NULL); # => ExampleClass.new + * mrb_p(mrb, obj); // => Kernel#p + * } + * @param mrb The current mruby state. + * @param c Reference to the class of the new object. + * @param argc Number of arguments in argv + * @param argv Array of mrb_value to initialize the object + * @return [mrb_value] The newly initialized object + */ +MRB_API mrb_value mrb_obj_new(mrb_state *mrb, struct RClass *c, mrb_int argc, const mrb_value *argv); + +/** @see mrb_obj_new */ +MRB_INLINE mrb_value mrb_class_new_instance(mrb_state *mrb, mrb_int argc, const mrb_value *argv, struct RClass *c) +{ + return mrb_obj_new(mrb,c,argc,argv); +} + +/** + * Creates a new instance of Class, Class. + * + * Example: + * + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_class; + * + * mrb_value obj; + * example_class = mrb_class_new(mrb, mrb->object_class); + * obj = mrb_obj_new(mrb, example_class, 0, NULL); // => #<#<Class:0x9a945b8>:0x9a94588> + * mrb_p(mrb, obj); // => Kernel#p + * } + * + * @param mrb The current mruby state. + * @param super The super class or parent. + * @return [struct RClass *] Reference to the new class. + */ +MRB_API struct RClass * mrb_class_new(mrb_state *mrb, struct RClass *super); + +/** + * Creates a new module, Module. + * + * Example: + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_module; + * + * example_module = mrb_module_new(mrb); + * } + * + * @param mrb The current mruby state. + * @return [struct RClass *] Reference to the new module. + */ +MRB_API struct RClass * mrb_module_new(mrb_state *mrb); + +/** + * Returns an mrb_bool. True if class was defined, and false if the class was not defined. + * + * Example: + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_class; + * mrb_bool cd; + * + * example_class = mrb_define_class(mrb, "ExampleClass", mrb->object_class); + * cd = mrb_class_defined(mrb, "ExampleClass"); + * + * // If mrb_class_defined returns 1 then puts "True" + * // If mrb_class_defined returns 0 then puts "False" + * if (cd == 1){ + * puts("True"); + * } + * else { + * puts("False"); + * } + * } + * + * @param mrb The current mruby state. + * @param name A string representing the name of the class. + * @return [mrb_bool] A boolean value. + */ +MRB_API mrb_bool mrb_class_defined(mrb_state *mrb, const char *name); +MRB_API mrb_bool mrb_class_defined_id(mrb_state *mrb, mrb_sym name); + +/** + * Gets a class. + * @param mrb The current mruby state. + * @param name The name of the class. + * @return [struct RClass *] A reference to the class. +*/ +MRB_API struct RClass* mrb_class_get(mrb_state *mrb, const char *name); +MRB_API struct RClass* mrb_class_get_id(mrb_state *mrb, mrb_sym name); + +/** + * Gets a exception class. + * @param mrb The current mruby state. + * @param name The name of the class. + * @return [struct RClass *] A reference to the class. +*/ +MRB_API struct RClass* mrb_exc_get_id(mrb_state *mrb, mrb_sym name); +#define mrb_exc_get(mrb, name) mrb_exc_get_id(mrb, mrb_intern_cstr(mrb, name)) + +/** + * Returns an mrb_bool. True if inner class was defined, and false if the inner class was not defined. + * + * Example: + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_outer, *example_inner; + * mrb_bool cd; + * + * example_outer = mrb_define_module(mrb, "ExampleOuter"); + * + * example_inner = mrb_define_class_under(mrb, example_outer, "ExampleInner", mrb->object_class); + * cd = mrb_class_defined_under(mrb, example_outer, "ExampleInner"); + * + * // If mrb_class_defined_under returns 1 then puts "True" + * // If mrb_class_defined_under returns 0 then puts "False" + * if (cd == 1){ + * puts("True"); + * } + * else { + * puts("False"); + * } + * } + * + * @param mrb The current mruby state. + * @param outer The name of the outer class. + * @param name A string representing the name of the inner class. + * @return [mrb_bool] A boolean value. + */ +MRB_API mrb_bool mrb_class_defined_under(mrb_state *mrb, struct RClass *outer, const char *name); +MRB_API mrb_bool mrb_class_defined_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name); + +/** + * Gets a child class. + * @param mrb The current mruby state. + * @param outer The name of the parent class. + * @param name The name of the class. + * @return [struct RClass *] A reference to the class. +*/ +MRB_API struct RClass * mrb_class_get_under(mrb_state *mrb, struct RClass *outer, const char *name); +MRB_API struct RClass * mrb_class_get_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name); + +/** + * Gets a module. + * @param mrb The current mruby state. + * @param name The name of the module. + * @return [struct RClass *] A reference to the module. +*/ +MRB_API struct RClass * mrb_module_get(mrb_state *mrb, const char *name); +MRB_API struct RClass * mrb_module_get_id(mrb_state *mrb, mrb_sym name); + +/** + * Gets a module defined under another module. + * @param mrb The current mruby state. + * @param outer The name of the outer module. + * @param name The name of the module. + * @return [struct RClass *] A reference to the module. +*/ +MRB_API struct RClass * mrb_module_get_under(mrb_state *mrb, struct RClass *outer, const char *name); +MRB_API struct RClass * mrb_module_get_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name); + +/* a function to raise NotImplementedError with current method name */ +MRB_API void mrb_notimplement(mrb_state*); +/* a function to be replacement of unimplemented method */ +MRB_API mrb_value mrb_notimplement_m(mrb_state*, mrb_value); + +/** + * Duplicate an object. + * + * Equivalent to: + * Object#dup + * @param mrb The current mruby state. + * @param obj Object to be duplicate. + * @return [mrb_value] The newly duplicated object. + */ +MRB_API mrb_value mrb_obj_dup(mrb_state *mrb, mrb_value obj); + +/** + * Returns true if obj responds to the given method. If the method was defined for that + * class it returns true, it returns false otherwise. + * + * Example: + * # Ruby style + * class ExampleClass + * def example_method + * end + * end + * + * ExampleClass.new.respond_to?(:example_method) # => true + * + * // C style + * void + * mrb_example_gem_init(mrb_state* mrb) { + * struct RClass *example_class; + * mrb_sym mid; + * mrb_bool obj_resp; + * + * example_class = mrb_define_class(mrb, "ExampleClass", mrb->object_class); + * mrb_define_method(mrb, example_class, "example_method", exampleMethod, MRB_ARGS_NONE()); + * mid = mrb_intern_str(mrb, mrb_str_new_lit(mrb, "example_method" )); + * obj_resp = mrb_obj_respond_to(mrb, example_class, mid); // => 1(true in Ruby world) + * + * // If mrb_obj_respond_to returns 1 then puts "True" + * // If mrb_obj_respond_to returns 0 then puts "False" + * if (obj_resp == 1) { + * puts("True"); + * } + * else if (obj_resp == 0) { + * puts("False"); + * } + * } + * + * @param mrb The current mruby state. + * @param c A reference to a class. + * @param mid A symbol referencing a method id. + * @return [mrb_bool] A boolean value. + */ +MRB_API mrb_bool mrb_obj_respond_to(mrb_state *mrb, struct RClass* c, mrb_sym mid); + +/** + * Defines a new class under a given module + * + * @param mrb The current mruby state. + * @param outer Reference to the module under which the new class will be defined + * @param name The name of the defined class + * @param super The new class parent + * @return [struct RClass *] Reference to the newly defined class + * @see mrb_define_class + */ +MRB_API struct RClass* mrb_define_class_under(mrb_state *mrb, struct RClass *outer, const char *name, struct RClass *super); +MRB_API struct RClass* mrb_define_class_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name, struct RClass *super); + +MRB_API struct RClass* mrb_define_module_under(mrb_state *mrb, struct RClass *outer, const char *name); +MRB_API struct RClass* mrb_define_module_under_id(mrb_state *mrb, struct RClass *outer, mrb_sym name); + +/** + * Function requires n arguments. + * + * @param n + * The number of required arguments. + */ +#define MRB_ARGS_REQ(n) ((mrb_aspec)((n)&0x1f) << 18) + +/** + * Function takes n optional arguments + * + * @param n + * The number of optional arguments. + */ +#define MRB_ARGS_OPT(n) ((mrb_aspec)((n)&0x1f) << 13) + +/** + * Function takes n1 mandatory arguments and n2 optional arguments + * + * @param n1 + * The number of required arguments. + * @param n2 + * The number of optional arguments. + */ +#define MRB_ARGS_ARG(n1,n2) (MRB_ARGS_REQ(n1)|MRB_ARGS_OPT(n2)) + +/** rest argument */ +#define MRB_ARGS_REST() ((mrb_aspec)(1 << 12)) + +/** required arguments after rest */ +#define MRB_ARGS_POST(n) ((mrb_aspec)((n)&0x1f) << 7) + +/** keyword arguments (n of keys, kdict) */ +#define MRB_ARGS_KEY(n1,n2) ((mrb_aspec)((((n1)&0x1f) << 2) | ((n2)?(1<<1):0))) + +/** + * Function takes a block argument + */ +#define MRB_ARGS_BLOCK() ((mrb_aspec)1) + +/** + * Function accepts any number of arguments + */ +#define MRB_ARGS_ANY() MRB_ARGS_REST() + +/** + * Function accepts no arguments + */ +#define MRB_ARGS_NONE() ((mrb_aspec)0) + +/** + * Format specifiers for {mrb_get_args} function + * + * Must be a C string composed of the following format specifiers: + * + * | char | Ruby type | C types | Notes | + * |:----:|----------------|-------------------|----------------------------------------------------| + * | `o` | {Object} | {mrb_value} | Could be used to retrieve any type of argument | + * | `C` | {Class}/{Module} | {mrb_value} | when `!` follows, the value may be `nil` | + * | `S` | {String} | {mrb_value} | when `!` follows, the value may be `nil` | + * | `A` | {Array} | {mrb_value} | when `!` follows, the value may be `nil` | + * | `H` | {Hash} | {mrb_value} | when `!` follows, the value may be `nil` | + * | `s` | {String} | const char *, {mrb_int} | Receive two arguments; `s!` gives (`NULL`,`0`) for `nil` | + * | `z` | {String} | const char * | `NULL` terminated string; `z!` gives `NULL` for `nil` | + * | `a` | {Array} | const {mrb_value} *, {mrb_int} | Receive two arguments; `a!` gives (`NULL`,`0`) for `nil` | + * | `c` | {Class}/{Module} | strcut RClass * | `c!` gives `NULL` for `nil` | + * | `f` | {Integer}/{Float} | {mrb_float} | | + * | `i` | {Integer}/{Float} | {mrb_int} | | + * | `b` | boolean | {mrb_bool} | | + * | `n` | {String}/{Symbol} | {mrb_sym} | | + * | `d` | data | void *, {mrb_data_type} const | 2nd argument will be used to check data type so it won't be modified; when `!` follows, the value may be `nil` | + * | `I` | inline struct | void *, struct RClass | `I!` gives `NULL` for `nil` | + * | `&` | block | {mrb_value} | &! raises exception if no block given. | + * | `*` | rest arguments | const {mrb_value} *, {mrb_int} | Receive the rest of arguments as an array; `*!` avoid copy of the stack. | + * | <code>\|</code> | optional | | After this spec following specs would be optional. | + * | `?` | optional given | {mrb_bool} | `TRUE` if preceding argument is given. Used to check optional argument is given. | + * | `:` | keyword args | {mrb_kwargs} const | Get keyword arguments. @see mrb_kwargs | + * + * @see mrb_get_args + * + * Immediately after format specifiers it can add format modifiers: + * + * | char | Notes | + * |:----:|-----------------------------------------------------------------------------------------| + * | `!` | Switch to the alternate mode; The behaviour changes depending on the format specifier | + * | `+` | Request a not frozen object; However, except nil value | + */ +typedef const char *mrb_args_format; + +/** + * Get keyword arguments by `mrb_get_args()` with `:` specifier. + * + * `mrb_kwargs::num` indicates that the number of keyword values. + * + * `mrb_kwargs::values` is an object array, and the keyword argument corresponding to the string array is assigned. + * Note that `undef` is assigned if there is no keyword argument corresponding to `mrb_kwargs::optional`. + * + * `mrb_kwargs::table` accepts a string array. + * + * `mrb_kwargs::required` indicates that the specified number of keywords starting from the beginning of the string array are required. + * + * `mrb_kwargs::rest` is the remaining keyword argument that can be accepted as `**rest` in Ruby. + * If `NULL` is specified, `ArgumentError` is raised when there is an undefined keyword. + * + * Examples: + * + * // def method(a: 1, b: 2) + * + * uint32_t kw_num = 2; + * const char *kw_names[kw_num] = { "a", "b" }; + * uint32_t kw_required = 0; + * mrb_value kw_values[kw_num]; + * const mrb_kwargs kwargs = { kw_num, kw_required, kw_names, kw_values, NULL }; + * + * mrb_get_args(mrb, ":", &kwargs); + * if (mrb_undef_p(kw_values[0])) { kw_values[0] = mrb_fixnum_value(1); } + * if (mrb_undef_p(kw_values[1])) { kw_values[1] = mrb_fixnum_value(2); } + * + * + * // def method(str, x:, y: 2, z: "default string", **opts) + * + * mrb_value str, kw_rest; + * uint32_t kw_num = 3; + * const mrb_sym kw_names[kw_num] = { MRB_SYM(x), MRB_SYM(y), MRB_SYM(z) }; + * uint32_t kw_required = 1; + * mrb_value kw_values[kw_num]; + * const mrb_kwargs kwargs = { kw_num, kw_required, kw_names, kw_values, &kw_rest }; + * + * mrb_get_args(mrb, "S:", &str, &kwargs); + * // or: mrb_get_args(mrb, ":S", &kwargs, &str); + * if (mrb_undef_p(kw_values[1])) { kw_values[1] = mrb_fixnum_value(2); } + * if (mrb_undef_p(kw_values[2])) { kw_values[2] = mrb_str_new_cstr(mrb, "default string"); } + */ +typedef struct mrb_kwargs mrb_kwargs; + +struct mrb_kwargs +{ + uint32_t num; /* number of keyword arguments */ + uint32_t required; /* number of required keyword arguments */ + const mrb_sym *table; /* C array of symbols for keyword names */ + mrb_value *values; /* keyword argument values */ + mrb_value *rest; /* keyword rest (dict) */ +}; + +/** + * Retrieve arguments from mrb_state. + * + * @param mrb The current MRuby state. + * @param format is a list of format specifiers + * @param ... The passing variadic arguments must be a pointer of retrieving type. + * @return the number of arguments retrieved. + * @see mrb_args_format + * @see mrb_kwargs + */ +MRB_API mrb_int mrb_get_args(mrb_state *mrb, mrb_args_format format, ...); + +MRB_INLINE mrb_sym +mrb_get_mid(mrb_state *mrb) /* get method symbol */ +{ + return mrb->c->ci->mid; +} + +/** + * Retrieve number of arguments from mrb_state. + * + * Correctly handles *splat arguments. + */ +MRB_API mrb_int mrb_get_argc(mrb_state *mrb); + +/** + * Retrieve an array of arguments from mrb_state. + * + * Correctly handles *splat arguments. + */ +MRB_API const mrb_value *mrb_get_argv(mrb_state *mrb); + +/** + * Retrieve the first and only argument from mrb_state. + * Raises ArgumentError unless the number of arguments is exactly one. + * + * Correctly handles *splat arguments. + */ +MRB_API mrb_value mrb_get_arg1(mrb_state *mrb); + +/** + * Check if a block argument is given from mrb_state. + */ +MRB_API mrb_bool mrb_block_given_p(mrb_state *mrb); + +/* `strlen` for character string literals (use with caution or `strlen` instead) + Adjacent string literals are concatenated in C/C++ in translation phase 6. + If `lit` is not one, the compiler will report a syntax error: + MSVC: "error C2143: syntax error : missing ')' before 'string'" + GCC: "error: expected ')' before string constant" +*/ +#define mrb_strlen_lit(lit) (sizeof(lit "") - 1) + +/** + * Call existing ruby functions. + * + * Example: + * + * #include <stdio.h> + * #include <mruby.h> + * #include "mruby/compile.h" + * + * int + * main() + * { + * mrb_int i = 99; + * mrb_state *mrb = mrb_open(); + * + * if (!mrb) { } + * FILE *fp = fopen("test.rb","r"); + * mrb_value obj = mrb_load_file(mrb,fp); + * mrb_funcall(mrb, obj, "method_name", 1, mrb_fixnum_value(i)); + * mrb_funcall_id(mrb, obj, MRB_SYM(method_name), 1, mrb_fixnum_value(i)); + * fclose(fp); + * mrb_close(mrb); + * } + * + * @param mrb The current mruby state. + * @param val A reference to an mruby value. + * @param name The name of the method. + * @param argc The number of arguments the method has. + * @param ... Variadic values(not type safe!). + * @return [mrb_value] mruby function value. + */ +MRB_API mrb_value mrb_funcall(mrb_state *mrb, mrb_value val, const char *name, mrb_int argc, ...); +MRB_API mrb_value mrb_funcall_id(mrb_state *mrb, mrb_value val, mrb_sym mid, mrb_int argc, ...); +/** + * Call existing ruby functions. This is basically the type safe version of mrb_funcall. + * + * #include <stdio.h> + * #include <mruby.h> + * #include "mruby/compile.h" + * int + * main() + * { + * mrb_state *mrb = mrb_open(); + * mrb_value obj = mrb_fixnum_value(1); + * + * if (!mrb) { } + * + * FILE *fp = fopen("test.rb","r"); + * mrb_value obj = mrb_load_file(mrb,fp); + * mrb_funcall_argv(mrb, obj, MRB_SYM(method_name), 1, &obj); // Calling ruby function from test.rb. + * fclose(fp); + * mrb_close(mrb); + * } + * @param mrb The current mruby state. + * @param val A reference to an mruby value. + * @param name_sym The symbol representing the method. + * @param argc The number of arguments the method has. + * @param obj Pointer to the object. + * @return [mrb_value] mrb_value mruby function value. + * @see mrb_funcall + */ +MRB_API mrb_value mrb_funcall_argv(mrb_state *mrb, mrb_value val, mrb_sym name, mrb_int argc, const mrb_value *argv); +/** + * Call existing ruby functions with a block. + */ +MRB_API mrb_value mrb_funcall_with_block(mrb_state *mrb, mrb_value val, mrb_sym name, mrb_int argc, const mrb_value *argv, mrb_value block); +/** + * Create a symbol from C string. But usually it's better to use MRB_SYM, + * MRB_OPSYM, MRB_CVSYM, MRB_IVSYM, MRB_SYM_B, MRB_SYM_Q, MRB_SYM_E macros. + * + * Example: + * + * # Ruby style: + * :pizza # => :pizza + * + * // C style: + * mrb_sym sym1 = mrb_intern_lit(mrb, "pizza"); // => :pizza + * mrb_sym sym2 = MRB_SYM(pizza); // => :pizza + * mrb_sym sym3 = MRB_SYM_Q(pizza); // => :pizza? + * + * @param mrb The current mruby state. + * @param str The string to be symbolized + * @return [mrb_sym] mrb_sym A symbol. + */ +MRB_API mrb_sym mrb_intern_cstr(mrb_state *mrb, const char* str); +MRB_API mrb_sym mrb_intern(mrb_state*,const char*,size_t); +MRB_API mrb_sym mrb_intern_static(mrb_state*,const char*,size_t); +#define mrb_intern_lit(mrb, lit) mrb_intern_static(mrb, (lit ""), mrb_strlen_lit(lit)) +MRB_API mrb_sym mrb_intern_str(mrb_state*,mrb_value); +/* mrb_intern_check series functions returns 0 if the symbol is not defined */ +MRB_API mrb_sym mrb_intern_check_cstr(mrb_state*,const char*); +MRB_API mrb_sym mrb_intern_check(mrb_state*,const char*,size_t); +MRB_API mrb_sym mrb_intern_check_str(mrb_state*,mrb_value); +/* mrb_check_intern series functions returns nil if the symbol is not defined */ +/* otherwise returns mrb_value */ +MRB_API mrb_value mrb_check_intern_cstr(mrb_state*,const char*); +MRB_API mrb_value mrb_check_intern(mrb_state*,const char*,size_t); +MRB_API mrb_value mrb_check_intern_str(mrb_state*,mrb_value); +MRB_API const char *mrb_sym_name(mrb_state*,mrb_sym); +MRB_API const char *mrb_sym_name_len(mrb_state*,mrb_sym,mrb_int*); +MRB_API const char *mrb_sym_dump(mrb_state*,mrb_sym); +MRB_API mrb_value mrb_sym_str(mrb_state*,mrb_sym); +#define mrb_sym2name(mrb,sym) mrb_sym_name(mrb,sym) +#define mrb_sym2name_len(mrb,sym,len) mrb_sym_name_len(mrb,sym,len) +#define mrb_sym2str(mrb,sym) mrb_sym_str(mrb,sym) + +MRB_API void *mrb_malloc(mrb_state*, size_t); /* raise RuntimeError if no mem */ +MRB_API void *mrb_calloc(mrb_state*, size_t, size_t); /* ditto */ +MRB_API void *mrb_realloc(mrb_state*, void*, size_t); /* ditto */ +MRB_API void *mrb_realloc_simple(mrb_state*, void*, size_t); /* return NULL if no memory available */ +MRB_API void *mrb_malloc_simple(mrb_state*, size_t); /* return NULL if no memory available */ +MRB_API struct RBasic *mrb_obj_alloc(mrb_state*, enum mrb_vtype, struct RClass*); +MRB_API void mrb_free(mrb_state*, void*); + +/** + * Allocates a Ruby object that matches the constant literal defined in + * `enum mrb_vtype` and returns a pointer to the corresponding C type. + * + * @param mrb The current mruby state + * @param tt The constant literal of `enum mrb_vtype` + * @param klass A Class object + * @return Reference to the newly created object + */ +#define MRB_OBJ_ALLOC(mrb, tt, klass) ((MRB_VTYPE_TYPEOF(tt)*)mrb_obj_alloc(mrb, tt, klass)) + +MRB_API mrb_value mrb_str_new(mrb_state *mrb, const char *p, size_t len); + +/** + * Turns a C string into a Ruby string value. + */ +MRB_API mrb_value mrb_str_new_cstr(mrb_state*, const char*); +MRB_API mrb_value mrb_str_new_static(mrb_state *mrb, const char *p, size_t len); +#define mrb_str_new_lit(mrb, lit) mrb_str_new_static(mrb, (lit), mrb_strlen_lit(lit)) + +MRB_API mrb_value mrb_obj_freeze(mrb_state*, mrb_value); +#define mrb_str_new_frozen(mrb,p,len) mrb_obj_freeze(mrb,mrb_str_new(mrb,p,len)) +#define mrb_str_new_cstr_frozen(mrb,p) mrb_obj_freeze(mrb,mrb_str_new_cstr(mrb,p)) +#define mrb_str_new_static_frozen(mrb,p,len) mrb_obj_freeze(mrb,mrb_str_new_static(mrb,p,len)) +#define mrb_str_new_lit_frozen(mrb,lit) mrb_obj_freeze(mrb,mrb_str_new_lit(mrb,lit)) + +#ifdef _WIN32 +MRB_API char* mrb_utf8_from_locale(const char *p, int len); +MRB_API char* mrb_locale_from_utf8(const char *p, int len); +#define mrb_locale_free(p) free(p) +#define mrb_utf8_free(p) free(p) +#else +#define mrb_utf8_from_locale(p, l) ((char*)(p)) +#define mrb_locale_from_utf8(p, l) ((char*)(p)) +#define mrb_locale_free(p) +#define mrb_utf8_free(p) +#endif + +/** + * Creates new mrb_state. + * + * @return + * Pointer to the newly created mrb_state. + */ +MRB_API mrb_state* mrb_open(void); + +/** + * Create new mrb_state with custom allocators. + * + * @param f + * Reference to the allocation function. + * @param ud + * User data will be passed to custom allocator f. + * If user data isn't required just pass NULL. + * @return + * Pointer to the newly created mrb_state. + */ +MRB_API mrb_state* mrb_open_allocf(mrb_allocf f, void *ud); + +/** + * Create new mrb_state with just the MRuby core + * + * @param f + * Reference to the allocation function. + * Use mrb_default_allocf for the default + * @param ud + * User data will be passed to custom allocator f. + * If user data isn't required just pass NULL. + * @return + * Pointer to the newly created mrb_state. + */ +MRB_API mrb_state* mrb_open_core(mrb_allocf f, void *ud); + +/** + * Closes and frees a mrb_state. + * + * @param mrb + * Pointer to the mrb_state to be closed. + */ +MRB_API void mrb_close(mrb_state *mrb); + +/** + * The default allocation function. + * + * @see mrb_allocf + */ +MRB_API void* mrb_default_allocf(mrb_state*, void*, size_t, void*); + +MRB_API mrb_value mrb_top_self(mrb_state *mrb); +MRB_API mrb_value mrb_top_run(mrb_state *mrb, const struct RProc *proc, mrb_value self, mrb_int stack_keep); +MRB_API mrb_value mrb_vm_run(mrb_state *mrb, const struct RProc *proc, mrb_value self, mrb_int stack_keep); +MRB_API mrb_value mrb_vm_exec(mrb_state *mrb, const struct RProc *proc, const mrb_code *iseq); +/* compatibility macros */ +#define mrb_toplevel_run_keep(m,p,k) mrb_top_run((m),(p),mrb_top_self(m),(k)) +#define mrb_toplevel_run(m,p) mrb_toplevel_run_keep((m),(p),0) +#define mrb_context_run(m,p,s,k) mrb_vm_run((m),(p),(s),(k)) + +MRB_API void mrb_p(mrb_state*, mrb_value); +MRB_API mrb_int mrb_obj_id(mrb_value obj); +MRB_API mrb_sym mrb_obj_to_sym(mrb_state *mrb, mrb_value name); + +MRB_API mrb_bool mrb_obj_eq(mrb_state *mrb, mrb_value a, mrb_value b); +MRB_API mrb_bool mrb_obj_equal(mrb_state *mrb, mrb_value a, mrb_value b); +MRB_API mrb_bool mrb_equal(mrb_state *mrb, mrb_value obj1, mrb_value obj2); +#ifndef MRB_NO_FLOAT +MRB_API mrb_value mrb_ensure_float_type(mrb_state *mrb, mrb_value val); +#define mrb_as_float(mrb, x) mrb_float(mrb_ensure_float_type(mrb, x)) +/* obsolete: use mrb_ensure_float_type() instead */ +#define mrb_to_float(mrb, val) mrb_ensure_float_type(mrb, val) +#endif +MRB_API mrb_value mrb_inspect(mrb_state *mrb, mrb_value obj); +MRB_API mrb_bool mrb_eql(mrb_state *mrb, mrb_value obj1, mrb_value obj2); +/* mrb_cmp(mrb, obj1, obj2): 1:0:-1; -2 for error */ +MRB_API mrb_int mrb_cmp(mrb_state *mrb, mrb_value obj1, mrb_value obj2); + +MRB_INLINE int +mrb_gc_arena_save(mrb_state *mrb) +{ + return mrb->gc.arena_idx; +} + +MRB_INLINE void +mrb_gc_arena_restore(mrb_state *mrb, int idx) +{ + mrb->gc.arena_idx = idx; +} + +MRB_API void mrb_garbage_collect(mrb_state*); +MRB_API void mrb_full_gc(mrb_state*); +MRB_API void mrb_incremental_gc(mrb_state *); +MRB_API void mrb_gc_mark(mrb_state*,struct RBasic*); +#define mrb_gc_mark_value(mrb,val) do {\ + if (!mrb_immediate_p(val)) mrb_gc_mark((mrb), mrb_basic_ptr(val)); \ +} while (0) +MRB_API void mrb_field_write_barrier(mrb_state *, struct RBasic*, struct RBasic*); +#define mrb_field_write_barrier_value(mrb, obj, val) do{\ + if (!mrb_immediate_p(val)) mrb_field_write_barrier((mrb), (obj), mrb_basic_ptr(val)); \ +} while (0) +MRB_API void mrb_write_barrier(mrb_state *, struct RBasic*); + +MRB_API mrb_value mrb_type_convert(mrb_state *mrb, mrb_value val, enum mrb_vtype type, mrb_sym method); +#define mrb_convert_type(mrb, val, type, tname, method) mrb_type_convert(mrb, val, type, mrb_intern_lit(mrb, method)) +MRB_API mrb_value mrb_type_convert_check(mrb_state *mrb, mrb_value val, enum mrb_vtype type, mrb_sym method); +#define mrb_check_convert_type(mrb, val, type, tname, method) mrb_type_convert_check(mrb, val, type, mrb_intern_lit(mrb, method)) + +MRB_API mrb_value mrb_any_to_s(mrb_state *mrb, mrb_value obj); +MRB_API const char * mrb_obj_classname(mrb_state *mrb, mrb_value obj); +MRB_API struct RClass* mrb_obj_class(mrb_state *mrb, mrb_value obj); +MRB_API mrb_value mrb_class_path(mrb_state *mrb, struct RClass *c); +MRB_API mrb_bool mrb_obj_is_kind_of(mrb_state *mrb, mrb_value obj, struct RClass *c); +MRB_API mrb_value mrb_obj_inspect(mrb_state *mrb, mrb_value self); +MRB_API mrb_value mrb_obj_clone(mrb_state *mrb, mrb_value self); + +#ifndef ISPRINT +#define ISASCII(c) ((unsigned)(c) <= 0x7f) +#define ISPRINT(c) (((unsigned)(c) - 0x20) < 0x5f) +#define ISSPACE(c) ((c) == ' ' || (unsigned)(c) - '\t' < 5) +#define ISUPPER(c) (((unsigned)(c) - 'A') < 26) +#define ISLOWER(c) (((unsigned)(c) - 'a') < 26) +#define ISALPHA(c) ((((unsigned)(c) | 0x20) - 'a') < 26) +#define ISDIGIT(c) (((unsigned)(c) - '0') < 10) +#define ISXDIGIT(c) (ISDIGIT(c) || ((unsigned)(c) | 0x20) - 'a' < 6) +#define ISALNUM(c) (ISALPHA(c) || ISDIGIT(c)) +#define ISBLANK(c) ((c) == ' ' || (c) == '\t') +#define ISCNTRL(c) ((unsigned)(c) < 0x20 || (c) == 0x7f) +#define TOUPPER(c) (ISLOWER(c) ? ((c) & 0x5f) : (c)) +#define TOLOWER(c) (ISUPPER(c) ? ((c) | 0x20) : (c)) +#endif + +MRB_API mrb_value mrb_exc_new(mrb_state *mrb, struct RClass *c, const char *ptr, size_t len); +MRB_API mrb_noreturn void mrb_exc_raise(mrb_state *mrb, mrb_value exc); + +MRB_API mrb_noreturn void mrb_raise(mrb_state *mrb, struct RClass *c, const char *msg); +MRB_API mrb_noreturn void mrb_raisef(mrb_state *mrb, struct RClass *c, const char *fmt, ...); +MRB_API mrb_noreturn void mrb_name_error(mrb_state *mrb, mrb_sym id, const char *fmt, ...); +MRB_API mrb_noreturn void mrb_frozen_error(mrb_state *mrb, void *frozen_obj); +MRB_API mrb_noreturn void mrb_argnum_error(mrb_state *mrb, mrb_int argc, int min, int max); +MRB_API void mrb_warn(mrb_state *mrb, const char *fmt, ...); +MRB_API mrb_noreturn void mrb_bug(mrb_state *mrb, const char *fmt, ...); +MRB_API void mrb_print_backtrace(mrb_state *mrb); +MRB_API void mrb_print_error(mrb_state *mrb); +/* function for `raisef` formatting */ +MRB_API mrb_value mrb_vformat(mrb_state *mrb, const char *format, va_list ap); + +/* macros to get typical exception objects + note: + + those E_* macros requires mrb_state* variable named mrb. + + exception objects obtained from those macros are local to mrb +*/ +#define MRB_ERROR_SYM(sym) mrb_intern_lit(mrb, #sym) +#define E_RUNTIME_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(RuntimeError)) +#define E_TYPE_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(TypeError)) +#define E_ZERODIV_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(ZeroDivisionError)) +#define E_ARGUMENT_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(ArgumentError)) +#define E_INDEX_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(IndexError)) +#define E_RANGE_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(RangeError)) +#define E_NAME_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(NameError)) +#define E_NOMETHOD_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(NoMethodError)) +#define E_SCRIPT_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(ScriptError)) +#define E_SYNTAX_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(SyntaxError)) +#define E_LOCALJUMP_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(LocalJumpError)) +#define E_REGEXP_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(RegexpError)) +#define E_FROZEN_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(FrozenError)) +#define E_NOTIMP_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(NotImplementedError)) +#define E_KEY_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(KeyError)) +#ifndef MRB_NO_FLOAT +# define E_FLOATDOMAIN_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(FloatDomainError)) +#endif + +MRB_API mrb_value mrb_yield(mrb_state *mrb, mrb_value b, mrb_value arg); +MRB_API mrb_value mrb_yield_argv(mrb_state *mrb, mrb_value b, mrb_int argc, const mrb_value *argv); +MRB_API mrb_value mrb_yield_with_class(mrb_state *mrb, mrb_value b, mrb_int argc, const mrb_value *argv, mrb_value self, struct RClass *c); + +/* continue execution to the proc */ +/* this function should always be called as the last function of a method */ +/* e.g. return mrb_yield_cont(mrb, proc, self, argc, argv); */ +mrb_value mrb_yield_cont(mrb_state *mrb, mrb_value b, mrb_value self, mrb_int argc, const mrb_value *argv); + +/* mrb_gc_protect() leaves the object in the arena */ +MRB_API void mrb_gc_protect(mrb_state *mrb, mrb_value obj); +/* mrb_gc_register() keeps the object from GC. */ +MRB_API void mrb_gc_register(mrb_state *mrb, mrb_value obj); +/* mrb_gc_unregister() removes the object from GC root. */ +MRB_API void mrb_gc_unregister(mrb_state *mrb, mrb_value obj); + +/* type conversion/check functions */ +MRB_API mrb_value mrb_ensure_array_type(mrb_state *mrb, mrb_value self); +MRB_API mrb_value mrb_check_array_type(mrb_state *mrb, mrb_value self); +MRB_API mrb_value mrb_ensure_hash_type(mrb_state *mrb, mrb_value hash); +MRB_API mrb_value mrb_check_hash_type(mrb_state *mrb, mrb_value hash); +MRB_API mrb_value mrb_ensure_string_type(mrb_state *mrb, mrb_value str); +MRB_API mrb_value mrb_check_string_type(mrb_state *mrb, mrb_value str); +/* obsolete: use mrb_ensure_string_type() instead */ +#define mrb_string_type(mrb, str) mrb_ensure_string_type(mrb,str) +#define mrb_to_str(mrb, str) mrb_ensure_string_type(mrb,str) +/* obsolete: use mrb_obj_as_string() instead */ +#define mrb_str_to_str(mrb, str) mrb_obj_as_string(mrb, str) +MRB_API mrb_value mrb_ensure_int_type(mrb_state *mrb, mrb_value val); +#define mrb_as_int(mrb, val) mrb_integer(mrb_ensure_int_type(mrb, val)) +/* obsolete: use mrb_ensure_int_type() instead */ +#define mrb_to_integer(mrb, val) mrb_ensure_int_type(mrb, val) +#define mrb_to_int(mrb, val) mrb_ensure_int_type(mrb, val) + +/* string type checking (contrary to the name, it doesn't convert) */ +MRB_API void mrb_check_type(mrb_state *mrb, mrb_value x, enum mrb_vtype t); + +MRB_INLINE void mrb_check_frozen(mrb_state *mrb, void *o) +{ + if (mrb_frozen_p((struct RBasic*)o)) mrb_frozen_error(mrb, o); +} + +MRB_API void mrb_define_alias(mrb_state *mrb, struct RClass *c, const char *a, const char *b); +MRB_API void mrb_define_alias_id(mrb_state *mrb, struct RClass *c, mrb_sym a, mrb_sym b); +MRB_API const char *mrb_class_name(mrb_state *mrb, struct RClass* klass); +MRB_API void mrb_define_global_const(mrb_state *mrb, const char *name, mrb_value val); + +MRB_API mrb_value mrb_attr_get(mrb_state *mrb, mrb_value obj, mrb_sym id); + +MRB_API mrb_bool mrb_respond_to(mrb_state *mrb, mrb_value obj, mrb_sym mid); +MRB_API mrb_bool mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RClass* c); +MRB_API mrb_bool mrb_func_basic_p(mrb_state *mrb, mrb_value obj, mrb_sym mid, mrb_func_t func); + +/* obsolete function(s); will be removed */ +#define mrb_int(mrb, val) mrb_as_int(mrb, val) + +/** + * Resume a Fiber + * + * Implemented in mruby-fiber + */ +MRB_API mrb_value mrb_fiber_resume(mrb_state *mrb, mrb_value fib, mrb_int argc, const mrb_value *argv); + +/** + * Yield a Fiber + * + * Implemented in mruby-fiber + */ +MRB_API mrb_value mrb_fiber_yield(mrb_state *mrb, mrb_int argc, const mrb_value *argv); + +/** + * Check if a Fiber is alive + * + * Implemented in mruby-fiber + */ +MRB_API mrb_value mrb_fiber_alive_p(mrb_state *mrb, mrb_value fib); + +/** + * FiberError reference + * + * Implemented in mruby-fiber + */ +#define E_FIBER_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(FiberError)) +MRB_API void mrb_stack_extend(mrb_state*, mrb_int); + +/* memory pool implementation */ +typedef struct mrb_pool mrb_pool; +MRB_API struct mrb_pool* mrb_pool_open(mrb_state*); +MRB_API void mrb_pool_close(struct mrb_pool*); +MRB_API void* mrb_pool_alloc(struct mrb_pool*, size_t); +MRB_API void* mrb_pool_realloc(struct mrb_pool*, void*, size_t oldlen, size_t newlen); +MRB_API mrb_bool mrb_pool_can_realloc(struct mrb_pool*, void*, size_t); +/* temporary memory allocation, only effective while GC arena is kept */ +MRB_API void* mrb_alloca(mrb_state *mrb, size_t); + +MRB_API void mrb_state_atexit(mrb_state *mrb, mrb_atexit_func func); + +MRB_API void mrb_show_version(mrb_state *mrb); +MRB_API void mrb_show_copyright(mrb_state *mrb); + +MRB_API mrb_value mrb_format(mrb_state *mrb, const char *format, ...); + +#ifdef MRB_PRESYM_SCANNING +# include <mruby/presym/scanning.h> +#endif + +#if 0 +/* memcpy and memset does not work with gdb reverse-next on my box */ +/* use naive memcpy and memset instead */ +#undef memcpy +#undef memset +static void* +mrbmemcpy(void *dst, const void *src, size_t n) +{ + char *d = (char*)dst; + const char *s = (const char*)src; + while (n--) + *d++ = *s++; + return d; +} +#define memcpy(a,b,c) mrbmemcpy(a,b,c) + +static void* +mrbmemset(void *s, int c, size_t n) +{ + char *t = (char*)s; + while (n--) + *t++ = c; + return s; +} +#define memset(a,b,c) mrbmemset(a,b,c) +#endif + +MRB_END_DECL + +#endif /* MRUBY_H */ |