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files >> //opt/alt/ruby32/include/ruby/internal/intern/eval.h
#ifndef RBIMPL_INTERN_EVAL_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_INTERN_EVAL_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 Pre-1.9 era evaluator APIs (now considered miscellaneous). */ #include "ruby/internal/attr/noreturn.h" #include "ruby/internal/dllexport.h" #include "ruby/internal/value.h" RBIMPL_SYMBOL_EXPORT_BEGIN() /* eval.c */ RBIMPL_ATTR_NORETURN() /** * Identical to rb_raise(), except it raises the passed exception instance as- * is instead of creating new one. * * @param[in] exc An instance of a subclass of ::rb_eException. * @exception exc What is passed. * @exception rb_eTypeError `exc` is not an exception. * @note It never returns. * * @internal * * Wellll actually, it can take more than what is described above. This * function tries to call `exception` method of the passed object. If that * function returns an exception object that is used instead. */ void rb_exc_raise(VALUE exc); RBIMPL_ATTR_NORETURN() /** * Identical to rb_fatal(), except it raises the passed exception instance as- * is instead of creating new one. * * @param[in] exc An instance of a subclass of ::rb_eException. * @exception exc What is passed. * @note It never returns. * * @internal * * You know what...? Using this API you can make arbitrary exceptions, like * `RuntimeError`, that doesn't interface with `rescue` clause. This is very * confusing. */ void rb_exc_fatal(VALUE exc); /* process.c */ RBIMPL_ATTR_NORETURN() /** * Identical to rb_exit(), except how arguments are passed. * * @param[in] argc Number of objects of `argv`. * @param[in] argv Contains at most one of the following: * - ::RUBY_Qtrue - means `EXIT_SUCCESS`. * - ::RUBY_Qfalse - means `EXIT_FAILURE`. * - Numerical value - takes that value. * @exception rb_eArgError Wrong `argc`. * @exception rb_eSystemExit Exception representing the exit status. * @note It never returns. */ VALUE rb_f_exit(int argc, const VALUE *argv); RBIMPL_ATTR_NORETURN() /** * This is similar to rb_f_exit(). In fact on some situation it internally * calls rb_exit(). But can be very esoteric on occasions. * * It takes up to one argument. If an argument is passed, it tries to display * that. Otherwise if there is `$!`, displays that exception instead. It * finally raise ::rb_eSystemExit in both cases. * * @param[in] argc Number of objects of `argv`. * @param[in] argv Contains at most one string-ish object. * @exception rb_eArgError Wrong `argc`. * @exception rb_eTypeError No conversion from `argv[0]` to String. * @exception rb_eSystemExit Exception representing `EXIT_FAILURE`. * @note It never returns. */ VALUE rb_f_abort(int argc, const VALUE *argv); /* eval.c*/ RBIMPL_ATTR_NORETURN() /** * Raises an instance of ::rb_eInterrupt. * * @exception rb_eInterrupt Always raises this exception. * @note It never returns. */ void rb_interrupt(void); /** * Queries the name of the Ruby level method that is calling this function. * The "name" in this context is the one assigned to the function for the first * time (note that methods can have multiple names via aliases). * * @retval 0 There is no method (e.g. toplevel context). * @retval otherwise The name of the current method. */ ID rb_frame_this_func(void); RBIMPL_ATTR_NORETURN() /** * This function is to re-throw global escapes. Such global escapes include * exceptions, `throw`, `break`, for example. * * It makes sense only when used in conjunction with "protect" series APIs * e.g. rb_protect(), rb_load_protect(), rb_eval_string_protect(), etc. In * case these functions experience global escapes, they fill their opaque * `state` return buffer. You can ignore such escapes. But if you decide * otherwise, you have to somehow escape globally again. This function is used * for that purpose. * * @param[in] state Opaque state of execution. * @note It never returns. * * @internal * * Though not a part of our public API, `state` is in fact an enum * ruby_tag_type. You can see the potential values by looking at vm_core.h. */ void rb_jump_tag(int state); /** * Calls `initialize` method of the passed object with the passed arguments. * It also forwards the implicitly passed block to the method. * * @param[in] obj Receiver object. * @param[in] argc Number of objects of `argv`. * @param[in] argv Passed as-is to `obj.initialize`. * @exception rb_eException Any exceptions happen inside. */ void rb_obj_call_init(VALUE obj, int argc, const VALUE *argv); /** * Identical to rb_obj_call_init(), except you can specify how to handle the * last element of the given array. * * @param[in] obj Receiver object. * @param[in] argc Number of objects of `argv`. * @param[in] argv Passed as-is to `obj.initialize`. * @param[in] kw_splat Handling of keyword parameters: * - RB_NO_KEYWORDS `argv`'s last is not a keyword argument. * - RB_PASS_KEYWORDS `argv`'s last is a keyword argument. * - RB_PASS_CALLED_KEYWORDS it depends if there is a passed block. * @exception rb_eNoMethodError No such method. * @exception rb_eException Any exceptions happen inside. */ void rb_obj_call_init_kw(VALUE, int, const VALUE*, int); /** * Identical to rb_frame_this_func(), except it returns the named used to call * the method. * * @retval 0 There is no method (e.g. toplevel context). * @retval otherwise The name of the current method. */ ID rb_frame_callee(void); /** * Constructs an exception object from the list of arguments, in a manner * similar to Ruby's `raise`. This function can take: * * - No arguments at all, i.e. `argc == 0`. This is not a failure. It * returns ::RUBY_Qnil then. * * - An object, which is an instance of ::rb_cString. In this case an * instance of ::rb_eRuntimeError whose message is the passed string is * created then returned. * * - An object, which responds to `exception` method, and optionally its * argument, and optionally its backtrace. For example instances of * subclasses of ::rb_eException have this method. What is returned from * the method is returned. * * @param[in] argc Number of objects of `argv`. * @param[in] argv 0 up to 3 objects. * @exception rb_eArgError Wrong `argc`. * @exception rb_eTypeError `argv[0].exception` returned non-exception. * @return An instance of a subclass of ::rb_eException. * * @internal * * Historically this was _the_ way `raise` converted its arguments to an * exception. However they diverged. */ VALUE rb_make_exception(int argc, const VALUE *argv); /* eval_jump.c */ /** * Registers a function that shall run on process exit. Registered functions * run in reverse-chronological order, mixed with syntactic `END` block and * `Kernel#at_exit`. * * @param[in] func Function to run at process exit. * @param[in] arg Passed as-is to `func`. */ void rb_set_end_proc(void (*func)(VALUE arg), VALUE arg); RBIMPL_SYMBOL_EXPORT_END() #endif /* RBIMPL_INTERN_EVAL_H */
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