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3df37259d8
We can check the function pointer passed to rb_define_singleton_method like how we do so in rb_define_method. Doing so revealed many arity mismatches.
2057 lines
50 KiB
C
2057 lines
50 KiB
C
/**********************************************************************
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eval.c -
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$Author$
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created at: Thu Jun 10 14:22:17 JST 1993
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
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Copyright (C) 2000 Information-technology Promotion Agency, Japan
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**********************************************************************/
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#include "internal.h"
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#include "eval_intern.h"
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#include "iseq.h"
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#include "gc.h"
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#include "ruby/vm.h"
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#include "vm_core.h"
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#include "mjit.h"
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#include "probes.h"
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#include "probes_helper.h"
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#ifdef HAVE_SYS_PRCTL_H
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#include <sys/prctl.h>
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#endif
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NORETURN(void rb_raise_jump(VALUE, VALUE));
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void rb_ec_clear_current_thread_trace_func(const rb_execution_context_t *ec);
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static int rb_ec_cleanup(rb_execution_context_t *ec, volatile int ex);
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static int rb_ec_exec_node(rb_execution_context_t *ec, void *n);
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VALUE rb_eLocalJumpError;
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VALUE rb_eSysStackError;
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ID ruby_static_id_signo, ruby_static_id_status;
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extern ID ruby_static_id_cause;
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#define id_cause ruby_static_id_cause
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#define exception_error GET_VM()->special_exceptions[ruby_error_reenter]
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#include "eval_error.c"
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#include "eval_jump.c"
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#define CLASS_OR_MODULE_P(obj) \
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(!SPECIAL_CONST_P(obj) && \
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(BUILTIN_TYPE(obj) == T_CLASS || BUILTIN_TYPE(obj) == T_MODULE))
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/*!
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* Initializes the VM and builtin libraries.
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* @retval 0 if succeeded.
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* @retval non-zero an error occurred.
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*/
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int
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ruby_setup(void)
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{
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enum ruby_tag_type state;
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if (GET_VM())
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return 0;
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ruby_init_stack((void *)&state);
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/*
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* Disable THP early before mallocs happen because we want this to
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* affect as many future pages as possible for CoW-friendliness
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*/
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#if defined(__linux__) && defined(PR_SET_THP_DISABLE)
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prctl(PR_SET_THP_DISABLE, 1, 0, 0, 0);
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#endif
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Init_BareVM();
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Init_heap();
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rb_vm_encoded_insn_data_table_init();
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Init_vm_objects();
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EC_PUSH_TAG(GET_EC());
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if ((state = EC_EXEC_TAG()) == TAG_NONE) {
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rb_call_inits();
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ruby_prog_init();
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GET_VM()->running = 1;
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}
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EC_POP_TAG();
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return state;
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}
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/*!
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* Calls ruby_setup() and check error.
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*
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* Prints errors and calls exit(3) if an error occurred.
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*/
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void
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ruby_init(void)
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{
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int state = ruby_setup();
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if (state) {
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if (RTEST(ruby_debug))
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error_print(GET_EC());
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exit(EXIT_FAILURE);
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}
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}
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/*! Processes command line arguments and compiles the Ruby source to execute.
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*
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* This function does:
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* \li Processes the given command line flags and arguments for ruby(1)
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* \li compiles the source code from the given argument, -e or stdin, and
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* \li returns the compiled source as an opaque pointer to an internal data structure
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*
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* @return an opaque pointer to the compiled source or an internal special value.
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* @sa ruby_executable_node().
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*/
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void *
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ruby_options(int argc, char **argv)
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{
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rb_execution_context_t *ec = GET_EC();
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enum ruby_tag_type state;
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void *volatile iseq = 0;
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ruby_init_stack((void *)&iseq);
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EC_PUSH_TAG(ec);
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if ((state = EC_EXEC_TAG()) == TAG_NONE) {
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SAVE_ROOT_JMPBUF(GET_THREAD(), iseq = ruby_process_options(argc, argv));
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}
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else {
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rb_ec_clear_current_thread_trace_func(ec);
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state = error_handle(ec, state);
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iseq = (void *)INT2FIX(state);
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}
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EC_POP_TAG();
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return iseq;
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}
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static void
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rb_ec_teardown(rb_execution_context_t *ec)
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{
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EC_PUSH_TAG(ec);
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if (EC_EXEC_TAG() == TAG_NONE) {
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rb_vm_trap_exit(rb_ec_vm_ptr(ec));
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}
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EC_POP_TAG();
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rb_ec_exec_end_proc(ec);
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rb_ec_clear_current_thread_trace_func(ec);
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}
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static void
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rb_ec_finalize(rb_execution_context_t *ec)
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{
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ruby_sig_finalize();
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ec->errinfo = Qnil;
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rb_objspace_call_finalizer(rb_ec_vm_ptr(ec)->objspace);
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}
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/** Runs the VM finalization processes.
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*
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* <code>END{}</code> and procs registered by <code>Kernel.#at_exit</code> are
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* executed here. See the Ruby language spec for more details.
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*
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* @note This function is allowed to raise an exception if an error occurred.
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*/
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void
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ruby_finalize(void)
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{
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rb_execution_context_t *ec = GET_EC();
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rb_ec_teardown(ec);
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rb_ec_finalize(ec);
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}
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/** Destructs the VM.
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*
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* Runs the VM finalization processes as well as ruby_finalize(), and frees
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* resources used by the VM.
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*
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* @param ex Default value to the return value.
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* @return If an error occurred returns a non-zero. If otherwise, returns the
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* given ex.
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* @note This function does not raise any exception.
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*/
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int
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ruby_cleanup(volatile int ex)
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{
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return rb_ec_cleanup(GET_EC(), ex);
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}
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static int
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rb_ec_cleanup(rb_execution_context_t *ec, volatile int ex)
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{
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int state;
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volatile VALUE errs[2] = { Qundef, Qundef };
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int nerr;
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rb_thread_t *th = rb_ec_thread_ptr(ec);
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volatile int sysex = EXIT_SUCCESS;
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volatile int step = 0;
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rb_threadptr_interrupt(th);
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rb_threadptr_check_signal(th);
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EC_PUSH_TAG(ec);
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if ((state = EC_EXEC_TAG()) == TAG_NONE) {
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SAVE_ROOT_JMPBUF(th, { RUBY_VM_CHECK_INTS(ec); });
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step_0: step++;
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errs[1] = ec->errinfo;
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if (THROW_DATA_P(ec->errinfo)) ec->errinfo = Qnil;
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rb_set_safe_level_force(0);
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ruby_init_stack(&errs[STACK_UPPER(errs, 0, 1)]);
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SAVE_ROOT_JMPBUF(th, rb_ec_teardown(ec));
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step_1: step++;
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/* protect from Thread#raise */
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th->status = THREAD_KILLED;
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errs[0] = ec->errinfo;
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SAVE_ROOT_JMPBUF(th, rb_thread_terminate_all());
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}
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else {
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switch (step) {
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case 0: goto step_0;
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case 1: goto step_1;
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}
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if (ex == 0) ex = state;
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}
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ec->errinfo = errs[1];
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sysex = error_handle(ec, ex);
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state = 0;
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for (nerr = 0; nerr < numberof(errs); ++nerr) {
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VALUE err = ATOMIC_VALUE_EXCHANGE(errs[nerr], Qnil);
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if (!RTEST(err)) continue;
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/* ec->errinfo contains a NODE while break'ing */
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if (THROW_DATA_P(err)) continue;
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if (rb_obj_is_kind_of(err, rb_eSystemExit)) {
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sysex = sysexit_status(err);
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break;
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}
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else if (rb_obj_is_kind_of(err, rb_eSignal)) {
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VALUE sig = rb_ivar_get(err, id_signo);
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state = NUM2INT(sig);
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break;
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}
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else if (sysex == EXIT_SUCCESS) {
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sysex = EXIT_FAILURE;
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}
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}
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mjit_finish(true); // We still need ISeqs here.
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rb_ec_finalize(ec);
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/* unlock again if finalizer took mutexes. */
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rb_threadptr_unlock_all_locking_mutexes(th);
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EC_POP_TAG();
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rb_thread_stop_timer_thread();
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ruby_vm_destruct(th->vm);
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if (state) ruby_default_signal(state);
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return sysex;
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}
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static int
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rb_ec_exec_node(rb_execution_context_t *ec, void *n)
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{
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volatile int state;
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rb_iseq_t *iseq = (rb_iseq_t *)n;
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if (!n) return 0;
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EC_PUSH_TAG(ec);
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if ((state = EC_EXEC_TAG()) == TAG_NONE) {
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rb_thread_t *const th = rb_ec_thread_ptr(ec);
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SAVE_ROOT_JMPBUF(th, {
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rb_iseq_eval_main(iseq);
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});
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}
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EC_POP_TAG();
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return state;
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}
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/*! Calls ruby_cleanup() and exits the process */
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void
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ruby_stop(int ex)
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{
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exit(ruby_cleanup(ex));
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}
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/*! Checks the return value of ruby_options().
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* @param n return value of ruby_options().
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* @param status pointer to the exit status of this process.
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*
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* ruby_options() sometimes returns a special value to indicate this process
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* should immediately exit. This function checks if the case. Also stores the
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* exit status that the caller have to pass to exit(3) into
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* <code>*status</code>.
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*
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* @retval non-zero if the given opaque pointer is actually a compiled source.
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* @retval 0 if the given value is such a special value.
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*/
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int
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ruby_executable_node(void *n, int *status)
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{
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VALUE v = (VALUE)n;
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int s;
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switch (v) {
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case Qtrue: s = EXIT_SUCCESS; break;
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case Qfalse: s = EXIT_FAILURE; break;
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default:
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if (!FIXNUM_P(v)) return TRUE;
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s = FIX2INT(v);
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}
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if (status) *status = s;
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return FALSE;
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}
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/*! Runs the given compiled source and exits this process.
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* @retval 0 if successfully run the source
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* @retval non-zero if an error occurred.
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*/
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int
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ruby_run_node(void *n)
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{
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rb_execution_context_t *ec = GET_EC();
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int status;
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if (!ruby_executable_node(n, &status)) {
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rb_ec_cleanup(ec, 0);
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return status;
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}
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ruby_init_stack((void *)&status);
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return rb_ec_cleanup(ec, rb_ec_exec_node(ec, n));
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}
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/*! Runs the given compiled source */
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int
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ruby_exec_node(void *n)
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{
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ruby_init_stack((void *)&n);
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return rb_ec_exec_node(GET_EC(), n);
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}
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/*
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* call-seq:
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* Module.nesting -> array
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*
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* Returns the list of +Modules+ nested at the point of call.
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*
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* module M1
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* module M2
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* $a = Module.nesting
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* end
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* end
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* $a #=> [M1::M2, M1]
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* $a[0].name #=> "M1::M2"
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*/
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static VALUE
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rb_mod_nesting(VALUE _)
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{
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VALUE ary = rb_ary_new();
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const rb_cref_t *cref = rb_vm_cref();
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while (cref && CREF_NEXT(cref)) {
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VALUE klass = CREF_CLASS(cref);
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if (!CREF_PUSHED_BY_EVAL(cref) &&
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!NIL_P(klass)) {
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rb_ary_push(ary, klass);
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}
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cref = CREF_NEXT(cref);
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}
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return ary;
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}
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|
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/*
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* call-seq:
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* Module.constants -> array
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* Module.constants(inherited) -> array
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*
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* In the first form, returns an array of the names of all
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* constants accessible from the point of call.
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* This list includes the names of all modules and classes
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* defined in the global scope.
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*
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* Module.constants.first(4)
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* # => [:ARGF, :ARGV, :ArgumentError, :Array]
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*
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* Module.constants.include?(:SEEK_SET) # => false
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*
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* class IO
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* Module.constants.include?(:SEEK_SET) # => true
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* end
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*
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* The second form calls the instance method +constants+.
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*/
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static VALUE
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rb_mod_s_constants(int argc, VALUE *argv, VALUE mod)
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{
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const rb_cref_t *cref = rb_vm_cref();
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VALUE klass;
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VALUE cbase = 0;
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void *data = 0;
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if (argc > 0 || mod != rb_cModule) {
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return rb_mod_constants(argc, argv, mod);
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}
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while (cref) {
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klass = CREF_CLASS(cref);
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if (!CREF_PUSHED_BY_EVAL(cref) &&
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!NIL_P(klass)) {
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data = rb_mod_const_at(CREF_CLASS(cref), data);
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if (!cbase) {
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cbase = klass;
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}
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}
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cref = CREF_NEXT(cref);
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}
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|
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if (cbase) {
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data = rb_mod_const_of(cbase, data);
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}
|
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return rb_const_list(data);
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}
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|
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/*!
|
|
* Asserts that \a klass is not a frozen class.
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* \param[in] klass a \c Module object
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* \exception RuntimeError if \a klass is not a class or frozen.
|
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* \ingroup class
|
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*/
|
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void
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rb_class_modify_check(VALUE klass)
|
|
{
|
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if (SPECIAL_CONST_P(klass)) {
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noclass:
|
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Check_Type(klass, T_CLASS);
|
|
}
|
|
if (OBJ_FROZEN(klass)) {
|
|
const char *desc;
|
|
|
|
if (FL_TEST(klass, FL_SINGLETON)) {
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desc = "object";
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klass = rb_ivar_get(klass, id__attached__);
|
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if (!SPECIAL_CONST_P(klass)) {
|
|
switch (BUILTIN_TYPE(klass)) {
|
|
case T_MODULE:
|
|
case T_ICLASS:
|
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desc = "Module";
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break;
|
|
case T_CLASS:
|
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desc = "Class";
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break;
|
|
}
|
|
}
|
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}
|
|
else {
|
|
switch (BUILTIN_TYPE(klass)) {
|
|
case T_MODULE:
|
|
case T_ICLASS:
|
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desc = "module";
|
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break;
|
|
case T_CLASS:
|
|
desc = "class";
|
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break;
|
|
default:
|
|
goto noclass;
|
|
}
|
|
}
|
|
rb_frozen_error_raise(klass, "can't modify frozen %s: %"PRIsVALUE, desc, klass);
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|
}
|
|
}
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|
|
|
NORETURN(static void rb_longjmp(rb_execution_context_t *, int, volatile VALUE, VALUE));
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|
static VALUE get_errinfo(void);
|
|
static VALUE get_ec_errinfo(const rb_execution_context_t *ec);
|
|
|
|
static VALUE
|
|
exc_setup_cause(VALUE exc, VALUE cause)
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|
{
|
|
#if SUPPORT_JOKE
|
|
if (NIL_P(cause)) {
|
|
ID id_true_cause;
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|
CONST_ID(id_true_cause, "true_cause");
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|
|
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cause = rb_attr_get(rb_eFatal, id_true_cause);
|
|
if (NIL_P(cause)) {
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cause = rb_exc_new_cstr(rb_eFatal, "because using such Ruby");
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|
rb_ivar_set(cause, id_cause, INT2FIX(42)); /* the answer */
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|
OBJ_FREEZE(cause);
|
|
rb_ivar_set(rb_eFatal, id_true_cause, cause);
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|
}
|
|
}
|
|
#endif
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|
if (!NIL_P(cause) && cause != exc) {
|
|
rb_ivar_set(exc, id_cause, cause);
|
|
if (!rb_ivar_defined(cause, id_cause)) {
|
|
rb_ivar_set(cause, id_cause, Qnil);
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|
}
|
|
}
|
|
return exc;
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|
}
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|
|
|
static inline VALUE
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|
exc_setup_message(const rb_execution_context_t *ec, VALUE mesg, VALUE *cause)
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|
{
|
|
int nocause = 0;
|
|
int nocircular = 0;
|
|
|
|
if (NIL_P(mesg)) {
|
|
mesg = ec->errinfo;
|
|
if (INTERNAL_EXCEPTION_P(mesg)) EC_JUMP_TAG(ec, TAG_FATAL);
|
|
nocause = 1;
|
|
}
|
|
if (NIL_P(mesg)) {
|
|
mesg = rb_exc_new(rb_eRuntimeError, 0, 0);
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|
nocause = 0;
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|
nocircular = 1;
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|
}
|
|
if (*cause == Qundef) {
|
|
if (nocause) {
|
|
*cause = Qnil;
|
|
nocircular = 1;
|
|
}
|
|
else if (!rb_ivar_defined(mesg, id_cause)) {
|
|
*cause = get_ec_errinfo(ec);
|
|
}
|
|
else {
|
|
nocircular = 1;
|
|
}
|
|
}
|
|
else if (!NIL_P(*cause) && !rb_obj_is_kind_of(*cause, rb_eException)) {
|
|
rb_raise(rb_eTypeError, "exception object expected");
|
|
}
|
|
|
|
if (!nocircular && !NIL_P(*cause) && *cause != Qundef && *cause != mesg) {
|
|
VALUE c = *cause;
|
|
while (!NIL_P(c = rb_attr_get(c, id_cause))) {
|
|
if (c == mesg) {
|
|
rb_raise(rb_eArgError, "circular causes");
|
|
}
|
|
}
|
|
}
|
|
return mesg;
|
|
}
|
|
|
|
static void
|
|
setup_exception(rb_execution_context_t *ec, int tag, volatile VALUE mesg, VALUE cause)
|
|
{
|
|
VALUE e;
|
|
const char *file = 0;
|
|
int line;
|
|
|
|
file = rb_source_location_cstr(&line);
|
|
if ((file && !NIL_P(mesg)) || (cause != Qundef)) {
|
|
volatile int state = 0;
|
|
|
|
EC_PUSH_TAG(ec);
|
|
if (EC_EXEC_TAG() == TAG_NONE && !(state = rb_ec_set_raised(ec))) {
|
|
VALUE bt = rb_get_backtrace(mesg);
|
|
if (!NIL_P(bt) || cause == Qundef) {
|
|
if (OBJ_FROZEN(mesg)) {
|
|
mesg = rb_obj_dup(mesg);
|
|
}
|
|
}
|
|
if (cause != Qundef && !THROW_DATA_P(cause)) {
|
|
exc_setup_cause(mesg, cause);
|
|
}
|
|
if (NIL_P(bt)) {
|
|
VALUE at = rb_ec_backtrace_object(ec);
|
|
rb_ivar_set(mesg, idBt_locations, at);
|
|
set_backtrace(mesg, at);
|
|
}
|
|
rb_ec_reset_raised(ec);
|
|
}
|
|
EC_POP_TAG();
|
|
if (state) goto fatal;
|
|
}
|
|
|
|
if (!NIL_P(mesg)) {
|
|
ec->errinfo = mesg;
|
|
}
|
|
|
|
if (RTEST(ruby_debug) && !NIL_P(e = ec->errinfo) &&
|
|
!rb_obj_is_kind_of(e, rb_eSystemExit)) {
|
|
enum ruby_tag_type state;
|
|
|
|
mesg = e;
|
|
EC_PUSH_TAG(ec);
|
|
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
|
|
ec->errinfo = Qnil;
|
|
e = rb_obj_as_string(mesg);
|
|
ec->errinfo = mesg;
|
|
if (file && line) {
|
|
e = rb_sprintf("Exception `%"PRIsVALUE"' at %s:%d - %"PRIsVALUE"\n",
|
|
rb_obj_class(mesg), file, line, e);
|
|
}
|
|
else if (file) {
|
|
e = rb_sprintf("Exception `%"PRIsVALUE"' at %s - %"PRIsVALUE"\n",
|
|
rb_obj_class(mesg), file, e);
|
|
}
|
|
else {
|
|
e = rb_sprintf("Exception `%"PRIsVALUE"' - %"PRIsVALUE"\n",
|
|
rb_obj_class(mesg), e);
|
|
}
|
|
warn_print_str(e);
|
|
}
|
|
EC_POP_TAG();
|
|
if (state == TAG_FATAL && ec->errinfo == exception_error) {
|
|
ec->errinfo = mesg;
|
|
}
|
|
else if (state) {
|
|
rb_ec_reset_raised(ec);
|
|
EC_JUMP_TAG(ec, state);
|
|
}
|
|
}
|
|
|
|
if (rb_ec_set_raised(ec)) {
|
|
fatal:
|
|
ec->errinfo = exception_error;
|
|
rb_ec_reset_raised(ec);
|
|
EC_JUMP_TAG(ec, TAG_FATAL);
|
|
}
|
|
|
|
if (tag != TAG_FATAL) {
|
|
RUBY_DTRACE_HOOK(RAISE, rb_obj_classname(ec->errinfo));
|
|
EXEC_EVENT_HOOK(ec, RUBY_EVENT_RAISE, ec->cfp->self, 0, 0, 0, mesg);
|
|
}
|
|
}
|
|
|
|
/*! \private */
|
|
void
|
|
rb_ec_setup_exception(const rb_execution_context_t *ec, VALUE mesg, VALUE cause)
|
|
{
|
|
if (cause == Qundef) {
|
|
cause = get_ec_errinfo(ec);
|
|
}
|
|
if (cause != mesg) {
|
|
rb_ivar_set(mesg, id_cause, cause);
|
|
}
|
|
}
|
|
|
|
static void
|
|
rb_longjmp(rb_execution_context_t *ec, int tag, volatile VALUE mesg, VALUE cause)
|
|
{
|
|
mesg = exc_setup_message(ec, mesg, &cause);
|
|
setup_exception(ec, tag, mesg, cause);
|
|
rb_ec_raised_clear(ec);
|
|
EC_JUMP_TAG(ec, tag);
|
|
}
|
|
|
|
static VALUE make_exception(int argc, const VALUE *argv, int isstr);
|
|
|
|
/*!
|
|
* Raises an exception in the current thread.
|
|
* \param[in] mesg an Exception class or an \c Exception object.
|
|
* \exception always raises an instance of the given exception class or
|
|
* the given \c Exception object.
|
|
* \ingroup exception
|
|
*/
|
|
void
|
|
rb_exc_raise(VALUE mesg)
|
|
{
|
|
if (!NIL_P(mesg)) {
|
|
mesg = make_exception(1, &mesg, FALSE);
|
|
}
|
|
rb_longjmp(GET_EC(), TAG_RAISE, mesg, Qundef);
|
|
}
|
|
|
|
/*!
|
|
* Raises a fatal error in the current thread.
|
|
*
|
|
* Same as rb_exc_raise() but raises a fatal error, which Ruby codes
|
|
* cannot rescue.
|
|
* \ingroup exception
|
|
*/
|
|
void
|
|
rb_exc_fatal(VALUE mesg)
|
|
{
|
|
if (!NIL_P(mesg)) {
|
|
mesg = make_exception(1, &mesg, FALSE);
|
|
}
|
|
rb_longjmp(GET_EC(), TAG_FATAL, mesg, Qnil);
|
|
}
|
|
|
|
/*!
|
|
* Raises an \c Interrupt exception.
|
|
* \ingroup exception
|
|
*/
|
|
void
|
|
rb_interrupt(void)
|
|
{
|
|
rb_exc_raise(rb_exc_new(rb_eInterrupt, 0, 0));
|
|
}
|
|
|
|
enum {raise_opt_cause, raise_max_opt}; /*< \private */
|
|
|
|
static int
|
|
extract_raise_opts(int argc, const VALUE *argv, VALUE *opts)
|
|
{
|
|
int i;
|
|
if (argc > 0) {
|
|
VALUE opt = argv[argc-1];
|
|
if (RB_TYPE_P(opt, T_HASH)) {
|
|
if (!RHASH_EMPTY_P(opt)) {
|
|
ID keywords[1];
|
|
CONST_ID(keywords[0], "cause");
|
|
rb_get_kwargs(opt, keywords, 0, -1-raise_max_opt, opts);
|
|
if (RHASH_EMPTY_P(opt)) --argc;
|
|
return argc;
|
|
}
|
|
}
|
|
}
|
|
for (i = 0; i < raise_max_opt; ++i) {
|
|
opts[i] = Qundef;
|
|
}
|
|
return argc;
|
|
}
|
|
|
|
VALUE
|
|
rb_f_raise(int argc, VALUE *argv)
|
|
{
|
|
VALUE err;
|
|
VALUE opts[raise_max_opt], *const cause = &opts[raise_opt_cause];
|
|
|
|
argc = extract_raise_opts(argc, argv, opts);
|
|
if (argc == 0) {
|
|
if (*cause != Qundef) {
|
|
rb_raise(rb_eArgError, "only cause is given with no arguments");
|
|
}
|
|
err = get_errinfo();
|
|
if (!NIL_P(err)) {
|
|
argc = 1;
|
|
argv = &err;
|
|
}
|
|
}
|
|
rb_raise_jump(rb_make_exception(argc, argv), *cause);
|
|
|
|
UNREACHABLE_RETURN(Qnil);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* raise
|
|
* raise(string, cause: $!)
|
|
* raise(exception [, string [, array]], cause: $!)
|
|
* fail
|
|
* fail(string, cause: $!)
|
|
* fail(exception [, string [, array]], cause: $!)
|
|
*
|
|
* With no arguments, raises the exception in <code>$!</code> or raises
|
|
* a RuntimeError if <code>$!</code> is +nil+. With a single +String+
|
|
* argument, raises a +RuntimeError+ with the string as a message. Otherwise,
|
|
* the first parameter should be an +Exception+ class (or another
|
|
* object that returns an +Exception+ object when sent an +exception+
|
|
* message). The optional second parameter sets the message associated with
|
|
* the exception (accessible via Exception#message), and the third parameter
|
|
* is an array of callback information (accessible via Exception#backtrace).
|
|
* The +cause+ of the generated exception (accessible via Exception#cause)
|
|
* is automatically set to the "current" exception (<code>$!</code>), if any.
|
|
* An alternative value, either an +Exception+ object or +nil+, can be
|
|
* specified via the +:cause+ argument.
|
|
*
|
|
* Exceptions are caught by the +rescue+ clause of
|
|
* <code>begin...end</code> blocks.
|
|
*
|
|
* raise "Failed to create socket"
|
|
* raise ArgumentError, "No parameters", caller
|
|
*/
|
|
|
|
static VALUE
|
|
f_raise(int c, VALUE *v, VALUE _)
|
|
{
|
|
return rb_f_raise(c, v);
|
|
}
|
|
|
|
static VALUE
|
|
make_exception(int argc, const VALUE *argv, int isstr)
|
|
{
|
|
VALUE mesg, exc;
|
|
int n;
|
|
|
|
mesg = Qnil;
|
|
switch (argc) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
exc = argv[0];
|
|
if (NIL_P(exc))
|
|
break;
|
|
if (isstr) {
|
|
mesg = rb_check_string_type(exc);
|
|
if (!NIL_P(mesg)) {
|
|
mesg = rb_exc_new3(rb_eRuntimeError, mesg);
|
|
break;
|
|
}
|
|
}
|
|
n = 0;
|
|
goto exception_call;
|
|
|
|
case 2:
|
|
case 3:
|
|
exc = argv[0];
|
|
n = 1;
|
|
exception_call:
|
|
mesg = rb_check_funcall(exc, idException, n, argv+1);
|
|
if (mesg == Qundef) {
|
|
rb_raise(rb_eTypeError, "exception class/object expected");
|
|
}
|
|
break;
|
|
default:
|
|
rb_error_arity(argc, 0, 3);
|
|
}
|
|
if (argc > 0) {
|
|
if (!rb_obj_is_kind_of(mesg, rb_eException))
|
|
rb_raise(rb_eTypeError, "exception object expected");
|
|
if (argc > 2)
|
|
set_backtrace(mesg, argv[2]);
|
|
}
|
|
|
|
return mesg;
|
|
}
|
|
|
|
/*!
|
|
* Make an \c Exception object from the list of arguments in a manner
|
|
* similar to \c Kernel\#raise.
|
|
*
|
|
* \param[in] argc the number of arguments
|
|
* \param[in] argv a pointer to the array of arguments.
|
|
*
|
|
* The first form of this function takes a \c String argument. Then
|
|
* it returns a \c RuntimeError whose error message is the given value.
|
|
*
|
|
* The second from of this function takes an \c Exception object. Then
|
|
* it just returns the given value.
|
|
*
|
|
* The last form takes an exception class, an optional error message and
|
|
* an optional array of backtrace. Then it passes the optional arguments
|
|
* to \c #exception method of the exception class.
|
|
*
|
|
* \return the exception object, or \c Qnil if \c argc is 0.
|
|
* \ingroup exception
|
|
*/
|
|
VALUE
|
|
rb_make_exception(int argc, const VALUE *argv)
|
|
{
|
|
return make_exception(argc, argv, TRUE);
|
|
}
|
|
|
|
/*! \private
|
|
* \todo can be static?
|
|
*/
|
|
void
|
|
rb_raise_jump(VALUE mesg, VALUE cause)
|
|
{
|
|
rb_execution_context_t *ec = GET_EC();
|
|
const rb_control_frame_t *cfp = ec->cfp;
|
|
const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(cfp);
|
|
VALUE klass = me->owner;
|
|
VALUE self = cfp->self;
|
|
ID mid = me->called_id;
|
|
|
|
rb_vm_pop_frame(ec);
|
|
EXEC_EVENT_HOOK(ec, RUBY_EVENT_C_RETURN, self, me->def->original_id, mid, klass, Qnil);
|
|
|
|
rb_longjmp(ec, TAG_RAISE, mesg, cause);
|
|
}
|
|
|
|
/*!
|
|
* Continues the exception caught by rb_protect() and rb_eval_string_protect().
|
|
*
|
|
* This function never return to the caller.
|
|
* \param[in] the value of \c *state which the protect function has set to the
|
|
* their last parameter.
|
|
* \ingroup exception
|
|
*/
|
|
void
|
|
rb_jump_tag(int tag)
|
|
{
|
|
if (UNLIKELY(tag < TAG_RETURN || tag > TAG_FATAL)) {
|
|
unknown_longjmp_status(tag);
|
|
}
|
|
EC_JUMP_TAG(GET_EC(), tag);
|
|
}
|
|
|
|
/*! Determines if the current method is given a block.
|
|
* \retval zero if not given
|
|
* \retval non-zero if given
|
|
* \ingroup defmethod
|
|
*/
|
|
int
|
|
rb_block_given_p(void)
|
|
{
|
|
if (rb_vm_frame_block_handler(GET_EC()->cfp) == VM_BLOCK_HANDLER_NONE) {
|
|
return FALSE;
|
|
}
|
|
else {
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
VALUE rb_eThreadError;
|
|
|
|
/*! Declares that the current method needs a block.
|
|
*
|
|
* Raises a \c LocalJumpError if not given a block.
|
|
* \ingroup defmethod
|
|
*/
|
|
void
|
|
rb_need_block(void)
|
|
{
|
|
if (!rb_block_given_p()) {
|
|
rb_vm_localjump_error("no block given", Qnil, 0);
|
|
}
|
|
}
|
|
|
|
/*! An equivalent of \c rescue clause.
|
|
*
|
|
* Equivalent to <code>begin .. rescue err_type .. end</code>
|
|
*
|
|
* \param[in] b_proc a function which potentially raises an exception.
|
|
* \param[in] data1 the argument of \a b_proc
|
|
* \param[in] r_proc a function which rescues an exception in \a b_proc.
|
|
* \param[in] data2 the first argument of \a r_proc
|
|
* \param[in] ... 1 or more exception classes. Must be terminated by \c (VALUE)0.
|
|
*
|
|
* First it calls the function \a b_proc, with \a data1 as the argument.
|
|
* When \a b_proc raises an exception, it calls \a r_proc with \a data2 and
|
|
* the exception object if the exception is a kind of one of the given
|
|
* exception classes.
|
|
*
|
|
* \return the return value of \a b_proc if no exception occurs,
|
|
* or the return value of \a r_proc if otherwise.
|
|
* \sa rb_rescue
|
|
* \sa rb_ensure
|
|
* \sa rb_protect
|
|
* \ingroup exception
|
|
*/
|
|
VALUE
|
|
rb_rescue2(VALUE (* b_proc) (VALUE), VALUE data1,
|
|
VALUE (* r_proc) (VALUE, VALUE), VALUE data2, ...)
|
|
{
|
|
enum ruby_tag_type state;
|
|
rb_execution_context_t * volatile ec = GET_EC();
|
|
rb_control_frame_t *volatile cfp = ec->cfp;
|
|
volatile VALUE result = Qfalse;
|
|
volatile VALUE e_info = ec->errinfo;
|
|
va_list args;
|
|
|
|
EC_PUSH_TAG(ec);
|
|
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
|
|
retry_entry:
|
|
result = (*b_proc) (data1);
|
|
}
|
|
else if (result) {
|
|
/* escape from r_proc */
|
|
if (state == TAG_RETRY) {
|
|
state = 0;
|
|
ec->errinfo = Qnil;
|
|
result = Qfalse;
|
|
goto retry_entry;
|
|
}
|
|
}
|
|
else {
|
|
rb_vm_rewind_cfp(ec, cfp);
|
|
|
|
if (state == TAG_RAISE) {
|
|
int handle = FALSE;
|
|
VALUE eclass;
|
|
|
|
va_init_list(args, data2);
|
|
while ((eclass = va_arg(args, VALUE)) != 0) {
|
|
if (rb_obj_is_kind_of(ec->errinfo, eclass)) {
|
|
handle = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
va_end(args);
|
|
|
|
if (handle) {
|
|
result = Qnil;
|
|
state = 0;
|
|
if (r_proc) {
|
|
result = (*r_proc) (data2, ec->errinfo);
|
|
}
|
|
ec->errinfo = e_info;
|
|
}
|
|
}
|
|
}
|
|
EC_POP_TAG();
|
|
if (state)
|
|
EC_JUMP_TAG(ec, state);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*! An equivalent of \c rescue clause.
|
|
*
|
|
* Equivalent to <code>begin .. rescue .. end</code>.
|
|
*
|
|
* It is same as
|
|
* \code{cpp}
|
|
* rb_rescue2(b_proc, data1, r_proc, data2, rb_eStandardError, (VALUE)0);
|
|
* \endcode
|
|
*
|
|
* \sa rb_rescue2
|
|
* \sa rb_ensure
|
|
* \sa rb_protect
|
|
* \ingroup exception
|
|
*/
|
|
VALUE
|
|
rb_rescue(VALUE (* b_proc)(VALUE), VALUE data1,
|
|
VALUE (* r_proc)(VALUE, VALUE), VALUE data2)
|
|
{
|
|
return rb_rescue2(b_proc, data1, r_proc, data2, rb_eStandardError,
|
|
(VALUE)0);
|
|
}
|
|
|
|
/*! Protects a function call from potential global escapes from the function.
|
|
*
|
|
* Such global escapes include exceptions, \c Kernel\#throw, \c break in
|
|
* an iterator, for example.
|
|
* It first calls the function func with arg as the argument.
|
|
* If no exception occurred during func, it returns the result of func and
|
|
* *state is zero.
|
|
* Otherwise, it returns Qnil and sets *state to nonzero.
|
|
* If state is NULL, it is not set in both cases.
|
|
*
|
|
* You have to clear the error info with rb_set_errinfo(Qnil) when
|
|
* ignoring the caught exception.
|
|
* \ingroup exception
|
|
* \sa rb_rescue
|
|
* \sa rb_rescue2
|
|
* \sa rb_ensure
|
|
*/
|
|
VALUE
|
|
rb_protect(VALUE (* proc) (VALUE), VALUE data, int *pstate)
|
|
{
|
|
volatile VALUE result = Qnil;
|
|
volatile enum ruby_tag_type state;
|
|
rb_execution_context_t * volatile ec = GET_EC();
|
|
rb_control_frame_t *volatile cfp = ec->cfp;
|
|
struct rb_vm_protect_tag protect_tag;
|
|
rb_jmpbuf_t org_jmpbuf;
|
|
|
|
protect_tag.prev = ec->protect_tag;
|
|
|
|
EC_PUSH_TAG(ec);
|
|
ec->protect_tag = &protect_tag;
|
|
MEMCPY(&org_jmpbuf, &rb_ec_thread_ptr(ec)->root_jmpbuf, rb_jmpbuf_t, 1);
|
|
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
|
|
SAVE_ROOT_JMPBUF(rb_ec_thread_ptr(ec), result = (*proc) (data));
|
|
}
|
|
else {
|
|
rb_vm_rewind_cfp(ec, cfp);
|
|
}
|
|
MEMCPY(&rb_ec_thread_ptr(ec)->root_jmpbuf, &org_jmpbuf, rb_jmpbuf_t, 1);
|
|
ec->protect_tag = protect_tag.prev;
|
|
EC_POP_TAG();
|
|
|
|
if (pstate != NULL) *pstate = state;
|
|
return result;
|
|
}
|
|
|
|
/*!
|
|
* An equivalent to \c ensure clause.
|
|
*
|
|
* Equivalent to <code>begin .. ensure .. end</code>.
|
|
*
|
|
* Calls the function \a b_proc with \a data1 as the argument,
|
|
* then calls \a e_proc with \a data2 when execution terminated.
|
|
* \return The return value of \a b_proc if no exception occurred,
|
|
* or \c Qnil if otherwise.
|
|
* \sa rb_rescue
|
|
* \sa rb_rescue2
|
|
* \sa rb_protect
|
|
* \ingroup exception
|
|
*/
|
|
VALUE
|
|
rb_ensure(VALUE (*b_proc)(VALUE), VALUE data1, VALUE (*e_proc)(VALUE), VALUE data2)
|
|
{
|
|
int state;
|
|
volatile VALUE result = Qnil;
|
|
VALUE errinfo;
|
|
rb_execution_context_t * volatile ec = GET_EC();
|
|
rb_ensure_list_t ensure_list;
|
|
ensure_list.entry.marker = 0;
|
|
ensure_list.entry.e_proc = e_proc;
|
|
ensure_list.entry.data2 = data2;
|
|
ensure_list.next = ec->ensure_list;
|
|
ec->ensure_list = &ensure_list;
|
|
EC_PUSH_TAG(ec);
|
|
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
|
|
result = (*b_proc) (data1);
|
|
}
|
|
EC_POP_TAG();
|
|
errinfo = ec->errinfo;
|
|
if (!NIL_P(errinfo) && !RB_TYPE_P(errinfo, T_OBJECT)) {
|
|
ec->errinfo = Qnil;
|
|
}
|
|
ec->ensure_list=ensure_list.next;
|
|
(*ensure_list.entry.e_proc)(ensure_list.entry.data2);
|
|
ec->errinfo = errinfo;
|
|
if (state)
|
|
EC_JUMP_TAG(ec, state);
|
|
return result;
|
|
}
|
|
|
|
static ID
|
|
frame_func_id(const rb_control_frame_t *cfp)
|
|
{
|
|
const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(cfp);
|
|
|
|
if (me) {
|
|
return me->def->original_id;
|
|
}
|
|
else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static ID
|
|
frame_called_id(rb_control_frame_t *cfp)
|
|
{
|
|
const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(cfp);
|
|
|
|
if (me) {
|
|
return me->called_id;
|
|
}
|
|
else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* The original name of the current method.
|
|
*
|
|
* The function returns the original name of the method even if
|
|
* an alias of the method is called.
|
|
* The function can also return 0 if it is not in a method. This
|
|
* case can happen in a toplevel of a source file, for example.
|
|
*
|
|
* \returns the ID of the name or 0
|
|
* \sa rb_frame_callee
|
|
* \ingroup defmethod
|
|
*/
|
|
ID
|
|
rb_frame_this_func(void)
|
|
{
|
|
return frame_func_id(GET_EC()->cfp);
|
|
}
|
|
|
|
/*!
|
|
* The name of the current method.
|
|
*
|
|
* The function returns the alias if an alias of the method is called.
|
|
* The function can also return 0 if it is not in a method. This
|
|
* case can happen in a toplevel of a source file, for example.
|
|
*
|
|
* \returns the ID of the name or 0.
|
|
* \sa rb_frame_this_func
|
|
* \ingroup defmethod
|
|
*/
|
|
ID
|
|
rb_frame_callee(void)
|
|
{
|
|
return frame_called_id(GET_EC()->cfp);
|
|
}
|
|
|
|
static rb_control_frame_t *
|
|
previous_frame(const rb_execution_context_t *ec)
|
|
{
|
|
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(ec->cfp);
|
|
/* check if prev_cfp can be accessible */
|
|
if ((void *)(ec->vm_stack + ec->vm_stack_size) == (void *)(prev_cfp)) {
|
|
return 0;
|
|
}
|
|
return prev_cfp;
|
|
}
|
|
|
|
static ID
|
|
prev_frame_callee(void)
|
|
{
|
|
rb_control_frame_t *prev_cfp = previous_frame(GET_EC());
|
|
if (!prev_cfp) return 0;
|
|
return frame_called_id(prev_cfp);
|
|
}
|
|
|
|
static ID
|
|
prev_frame_func(void)
|
|
{
|
|
rb_control_frame_t *prev_cfp = previous_frame(GET_EC());
|
|
if (!prev_cfp) return 0;
|
|
return frame_func_id(prev_cfp);
|
|
}
|
|
|
|
/*!
|
|
* \private
|
|
* Returns the ID of the last method in the call stack.
|
|
* \sa rb_frame_this_func
|
|
* \ingroup defmethod
|
|
*/
|
|
ID
|
|
rb_frame_last_func(void)
|
|
{
|
|
const rb_execution_context_t *ec = GET_EC();
|
|
const rb_control_frame_t *cfp = ec->cfp;
|
|
ID mid;
|
|
|
|
while (!(mid = frame_func_id(cfp)) &&
|
|
(cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp),
|
|
!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(ec, cfp)));
|
|
return mid;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* append_features(mod) -> mod
|
|
*
|
|
* When this module is included in another, Ruby calls
|
|
* #append_features in this module, passing it the receiving module
|
|
* in _mod_. Ruby's default implementation is to add the constants,
|
|
* methods, and module variables of this module to _mod_ if this
|
|
* module has not already been added to _mod_ or one of its
|
|
* ancestors. See also Module#include.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_append_features(VALUE module, VALUE include)
|
|
{
|
|
if (!CLASS_OR_MODULE_P(include)) {
|
|
Check_Type(include, T_CLASS);
|
|
}
|
|
rb_include_module(include, module);
|
|
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* include(module, ...) -> self
|
|
*
|
|
* Invokes Module.append_features on each parameter in reverse order.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_include(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
int i;
|
|
ID id_append_features, id_included;
|
|
|
|
CONST_ID(id_append_features, "append_features");
|
|
CONST_ID(id_included, "included");
|
|
|
|
rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
|
|
for (i = 0; i < argc; i++)
|
|
Check_Type(argv[i], T_MODULE);
|
|
while (argc--) {
|
|
rb_funcall(argv[argc], id_append_features, 1, module);
|
|
rb_funcall(argv[argc], id_included, 1, module);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prepend_features(mod) -> mod
|
|
*
|
|
* When this module is prepended in another, Ruby calls
|
|
* #prepend_features in this module, passing it the receiving module
|
|
* in _mod_. Ruby's default implementation is to overlay the
|
|
* constants, methods, and module variables of this module to _mod_
|
|
* if this module has not already been added to _mod_ or one of its
|
|
* ancestors. See also Module#prepend.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_prepend_features(VALUE module, VALUE prepend)
|
|
{
|
|
if (!CLASS_OR_MODULE_P(prepend)) {
|
|
Check_Type(prepend, T_CLASS);
|
|
}
|
|
rb_prepend_module(prepend, module);
|
|
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* prepend(module, ...) -> self
|
|
*
|
|
* Invokes Module.prepend_features on each parameter in reverse order.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_prepend(int argc, VALUE *argv, VALUE module)
|
|
{
|
|
int i;
|
|
ID id_prepend_features, id_prepended;
|
|
|
|
CONST_ID(id_prepend_features, "prepend_features");
|
|
CONST_ID(id_prepended, "prepended");
|
|
|
|
rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
|
|
for (i = 0; i < argc; i++)
|
|
Check_Type(argv[i], T_MODULE);
|
|
while (argc--) {
|
|
rb_funcall(argv[argc], id_prepend_features, 1, module);
|
|
rb_funcall(argv[argc], id_prepended, 1, module);
|
|
}
|
|
return module;
|
|
}
|
|
|
|
static void
|
|
ensure_class_or_module(VALUE obj)
|
|
{
|
|
if (!RB_TYPE_P(obj, T_CLASS) && !RB_TYPE_P(obj, T_MODULE)) {
|
|
rb_raise(rb_eTypeError,
|
|
"wrong argument type %"PRIsVALUE" (expected Class or Module)",
|
|
rb_obj_class(obj));
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
hidden_identity_hash_new(void)
|
|
{
|
|
VALUE hash = rb_ident_hash_new();
|
|
|
|
RBASIC_CLEAR_CLASS(hash); /* hide from ObjectSpace */
|
|
return hash;
|
|
}
|
|
|
|
static VALUE
|
|
refinement_superclass(VALUE superclass)
|
|
{
|
|
if (RB_TYPE_P(superclass, T_MODULE)) {
|
|
/* FIXME: Should ancestors of superclass be used here? */
|
|
return rb_include_class_new(superclass, rb_cBasicObject);
|
|
}
|
|
else {
|
|
return superclass;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \private
|
|
* \todo can be static?
|
|
*/
|
|
void
|
|
rb_using_refinement(rb_cref_t *cref, VALUE klass, VALUE module)
|
|
{
|
|
VALUE iclass, c, superclass = klass;
|
|
|
|
ensure_class_or_module(klass);
|
|
Check_Type(module, T_MODULE);
|
|
if (NIL_P(CREF_REFINEMENTS(cref))) {
|
|
CREF_REFINEMENTS_SET(cref, hidden_identity_hash_new());
|
|
}
|
|
else {
|
|
if (CREF_OMOD_SHARED(cref)) {
|
|
CREF_REFINEMENTS_SET(cref, rb_hash_dup(CREF_REFINEMENTS(cref)));
|
|
CREF_OMOD_SHARED_UNSET(cref);
|
|
}
|
|
if (!NIL_P(c = rb_hash_lookup(CREF_REFINEMENTS(cref), klass))) {
|
|
superclass = c;
|
|
while (c && RB_TYPE_P(c, T_ICLASS)) {
|
|
if (RBASIC(c)->klass == module) {
|
|
/* already used refinement */
|
|
return;
|
|
}
|
|
c = RCLASS_SUPER(c);
|
|
}
|
|
}
|
|
}
|
|
FL_SET(module, RMODULE_IS_OVERLAID);
|
|
superclass = refinement_superclass(superclass);
|
|
c = iclass = rb_include_class_new(module, superclass);
|
|
RB_OBJ_WRITE(c, &RCLASS_REFINED_CLASS(c), klass);
|
|
|
|
RCLASS_M_TBL(OBJ_WB_UNPROTECT(c)) =
|
|
RCLASS_M_TBL(OBJ_WB_UNPROTECT(module)); /* TODO: check unprotecting */
|
|
|
|
module = RCLASS_SUPER(module);
|
|
while (module && module != klass) {
|
|
FL_SET(module, RMODULE_IS_OVERLAID);
|
|
c = RCLASS_SET_SUPER(c, rb_include_class_new(module, RCLASS_SUPER(c)));
|
|
RB_OBJ_WRITE(c, &RCLASS_REFINED_CLASS(c), klass);
|
|
module = RCLASS_SUPER(module);
|
|
}
|
|
rb_hash_aset(CREF_REFINEMENTS(cref), klass, iclass);
|
|
}
|
|
|
|
static int
|
|
using_refinement(VALUE klass, VALUE module, VALUE arg)
|
|
{
|
|
rb_cref_t *cref = (rb_cref_t *) arg;
|
|
|
|
rb_using_refinement(cref, klass, module);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static void
|
|
using_module_recursive(const rb_cref_t *cref, VALUE klass)
|
|
{
|
|
ID id_refinements;
|
|
VALUE super, module, refinements;
|
|
|
|
super = RCLASS_SUPER(klass);
|
|
if (super) {
|
|
using_module_recursive(cref, super);
|
|
}
|
|
switch (BUILTIN_TYPE(klass)) {
|
|
case T_MODULE:
|
|
module = klass;
|
|
break;
|
|
|
|
case T_ICLASS:
|
|
module = RBASIC(klass)->klass;
|
|
break;
|
|
|
|
default:
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (expected Module)",
|
|
rb_obj_classname(klass));
|
|
break;
|
|
}
|
|
CONST_ID(id_refinements, "__refinements__");
|
|
refinements = rb_attr_get(module, id_refinements);
|
|
if (NIL_P(refinements)) return;
|
|
rb_hash_foreach(refinements, using_refinement, (VALUE) cref);
|
|
}
|
|
|
|
/*!
|
|
* \private
|
|
* \todo can be static?
|
|
*/
|
|
void
|
|
rb_using_module(const rb_cref_t *cref, VALUE module)
|
|
{
|
|
Check_Type(module, T_MODULE);
|
|
using_module_recursive(cref, module);
|
|
rb_clear_method_cache_by_class(rb_cObject);
|
|
}
|
|
|
|
/*! \private */
|
|
VALUE
|
|
rb_refinement_module_get_refined_class(VALUE module)
|
|
{
|
|
ID id_refined_class;
|
|
|
|
CONST_ID(id_refined_class, "__refined_class__");
|
|
return rb_attr_get(module, id_refined_class);
|
|
}
|
|
|
|
static void
|
|
add_activated_refinement(VALUE activated_refinements,
|
|
VALUE klass, VALUE refinement)
|
|
{
|
|
VALUE iclass, c, superclass = klass;
|
|
|
|
if (!NIL_P(c = rb_hash_lookup(activated_refinements, klass))) {
|
|
superclass = c;
|
|
while (c && RB_TYPE_P(c, T_ICLASS)) {
|
|
if (RBASIC(c)->klass == refinement) {
|
|
/* already used refinement */
|
|
return;
|
|
}
|
|
c = RCLASS_SUPER(c);
|
|
}
|
|
}
|
|
FL_SET(refinement, RMODULE_IS_OVERLAID);
|
|
superclass = refinement_superclass(superclass);
|
|
c = iclass = rb_include_class_new(refinement, superclass);
|
|
RB_OBJ_WRITE(c, &RCLASS_REFINED_CLASS(c), klass);
|
|
refinement = RCLASS_SUPER(refinement);
|
|
while (refinement && refinement != klass) {
|
|
FL_SET(refinement, RMODULE_IS_OVERLAID);
|
|
c = RCLASS_SET_SUPER(c, rb_include_class_new(refinement, RCLASS_SUPER(c)));
|
|
RB_OBJ_WRITE(c, &RCLASS_REFINED_CLASS(c), klass);
|
|
refinement = RCLASS_SUPER(refinement);
|
|
}
|
|
rb_hash_aset(activated_refinements, klass, iclass);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* refine(mod) { block } -> module
|
|
*
|
|
* Refine <i>mod</i> in the receiver.
|
|
*
|
|
* Returns a module, where refined methods are defined.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_refine(VALUE module, VALUE klass)
|
|
{
|
|
VALUE refinement;
|
|
ID id_refinements, id_activated_refinements,
|
|
id_refined_class, id_defined_at;
|
|
VALUE refinements, activated_refinements;
|
|
rb_thread_t *th = GET_THREAD();
|
|
VALUE block_handler = rb_vm_frame_block_handler(th->ec->cfp);
|
|
|
|
if (block_handler == VM_BLOCK_HANDLER_NONE) {
|
|
rb_raise(rb_eArgError, "no block given");
|
|
}
|
|
if (vm_block_handler_type(block_handler) != block_handler_type_iseq) {
|
|
rb_raise(rb_eArgError, "can't pass a Proc as a block to Module#refine");
|
|
}
|
|
|
|
ensure_class_or_module(klass);
|
|
CONST_ID(id_refinements, "__refinements__");
|
|
refinements = rb_attr_get(module, id_refinements);
|
|
if (NIL_P(refinements)) {
|
|
refinements = hidden_identity_hash_new();
|
|
rb_ivar_set(module, id_refinements, refinements);
|
|
}
|
|
CONST_ID(id_activated_refinements, "__activated_refinements__");
|
|
activated_refinements = rb_attr_get(module, id_activated_refinements);
|
|
if (NIL_P(activated_refinements)) {
|
|
activated_refinements = hidden_identity_hash_new();
|
|
rb_ivar_set(module, id_activated_refinements,
|
|
activated_refinements);
|
|
}
|
|
refinement = rb_hash_lookup(refinements, klass);
|
|
if (NIL_P(refinement)) {
|
|
VALUE superclass = refinement_superclass(klass);
|
|
refinement = rb_module_new();
|
|
RCLASS_SET_SUPER(refinement, superclass);
|
|
FL_SET(refinement, RMODULE_IS_REFINEMENT);
|
|
CONST_ID(id_refined_class, "__refined_class__");
|
|
rb_ivar_set(refinement, id_refined_class, klass);
|
|
CONST_ID(id_defined_at, "__defined_at__");
|
|
rb_ivar_set(refinement, id_defined_at, module);
|
|
rb_hash_aset(refinements, klass, refinement);
|
|
add_activated_refinement(activated_refinements, klass, refinement);
|
|
}
|
|
rb_yield_refine_block(refinement, activated_refinements);
|
|
return refinement;
|
|
}
|
|
|
|
static void
|
|
ignored_block(VALUE module, const char *klass)
|
|
{
|
|
const char *anon = "";
|
|
Check_Type(module, T_MODULE);
|
|
if (!RTEST(rb_search_class_path(module))) {
|
|
anon = ", maybe for Module.new";
|
|
}
|
|
rb_warn("%s""using doesn't call the given block""%s.", klass, anon);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* using(module) -> self
|
|
*
|
|
* Import class refinements from <i>module</i> into the current class or
|
|
* module definition.
|
|
*/
|
|
|
|
static VALUE
|
|
mod_using(VALUE self, VALUE module)
|
|
{
|
|
rb_control_frame_t *prev_cfp = previous_frame(GET_EC());
|
|
|
|
if (prev_frame_func()) {
|
|
rb_raise(rb_eRuntimeError,
|
|
"Module#using is not permitted in methods");
|
|
}
|
|
if (prev_cfp && prev_cfp->self != self) {
|
|
rb_raise(rb_eRuntimeError, "Module#using is not called on self");
|
|
}
|
|
if (rb_block_given_p()) {
|
|
ignored_block(module, "Module#");
|
|
}
|
|
rb_using_module(rb_vm_cref_replace_with_duplicated_cref(), module);
|
|
return self;
|
|
}
|
|
|
|
static int
|
|
used_modules_i(VALUE _, VALUE mod, VALUE ary)
|
|
{
|
|
ID id_defined_at;
|
|
CONST_ID(id_defined_at, "__defined_at__");
|
|
while (FL_TEST(rb_class_of(mod), RMODULE_IS_REFINEMENT)) {
|
|
rb_ary_push(ary, rb_attr_get(rb_class_of(mod), id_defined_at));
|
|
mod = RCLASS_SUPER(mod);
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* used_modules -> array
|
|
*
|
|
* Returns an array of all modules used in the current scope. The ordering
|
|
* of modules in the resulting array is not defined.
|
|
*
|
|
* module A
|
|
* refine Object do
|
|
* end
|
|
* end
|
|
*
|
|
* module B
|
|
* refine Object do
|
|
* end
|
|
* end
|
|
*
|
|
* using A
|
|
* using B
|
|
* p Module.used_modules
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* [B, A]
|
|
*/
|
|
static VALUE
|
|
rb_mod_s_used_modules(VALUE _)
|
|
{
|
|
const rb_cref_t *cref = rb_vm_cref();
|
|
VALUE ary = rb_ary_new();
|
|
|
|
while(cref) {
|
|
if(!NIL_P(CREF_REFINEMENTS(cref))) {
|
|
rb_hash_foreach(CREF_REFINEMENTS(cref), used_modules_i, ary);
|
|
}
|
|
cref = CREF_NEXT(cref);
|
|
}
|
|
|
|
return rb_funcall(ary, rb_intern("uniq"), 0);
|
|
}
|
|
|
|
/*!
|
|
* Calls \c #initialize method of \a obj with the given arguments.
|
|
*
|
|
* It also forwards the given block to \c #initialize if given.
|
|
*
|
|
* \param[in] obj the receiver object
|
|
* \param[in] argc the number of arguments
|
|
* \param[in] argv a pointer to the array of arguments
|
|
* \ingroup object
|
|
*/
|
|
void
|
|
rb_obj_call_init(VALUE obj, int argc, const VALUE *argv)
|
|
{
|
|
PASS_PASSED_BLOCK_HANDLER();
|
|
rb_funcallv(obj, idInitialize, argc, argv);
|
|
}
|
|
|
|
/*!
|
|
* Extend the object with the module.
|
|
*
|
|
* Same as \c Module\#extend_object.
|
|
* \ingroup class
|
|
*/
|
|
void
|
|
rb_extend_object(VALUE obj, VALUE module)
|
|
{
|
|
rb_include_module(rb_singleton_class(obj), module);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* extend_object(obj) -> obj
|
|
*
|
|
* Extends the specified object by adding this module's constants and
|
|
* methods (which are added as singleton methods). This is the callback
|
|
* method used by Object#extend.
|
|
*
|
|
* module Picky
|
|
* def Picky.extend_object(o)
|
|
* if String === o
|
|
* puts "Can't add Picky to a String"
|
|
* else
|
|
* puts "Picky added to #{o.class}"
|
|
* super
|
|
* end
|
|
* end
|
|
* end
|
|
* (s = Array.new).extend Picky # Call Object.extend
|
|
* (s = "quick brown fox").extend Picky
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Picky added to Array
|
|
* Can't add Picky to a String
|
|
*/
|
|
|
|
static VALUE
|
|
rb_mod_extend_object(VALUE mod, VALUE obj)
|
|
{
|
|
rb_extend_object(obj, mod);
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* obj.extend(module, ...) -> obj
|
|
*
|
|
* Adds to _obj_ the instance methods from each module given as a
|
|
* parameter.
|
|
*
|
|
* module Mod
|
|
* def hello
|
|
* "Hello from Mod.\n"
|
|
* end
|
|
* end
|
|
*
|
|
* class Klass
|
|
* def hello
|
|
* "Hello from Klass.\n"
|
|
* end
|
|
* end
|
|
*
|
|
* k = Klass.new
|
|
* k.hello #=> "Hello from Klass.\n"
|
|
* k.extend(Mod) #=> #<Klass:0x401b3bc8>
|
|
* k.hello #=> "Hello from Mod.\n"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_obj_extend(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
int i;
|
|
ID id_extend_object, id_extended;
|
|
|
|
CONST_ID(id_extend_object, "extend_object");
|
|
CONST_ID(id_extended, "extended");
|
|
|
|
rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
|
|
for (i = 0; i < argc; i++)
|
|
Check_Type(argv[i], T_MODULE);
|
|
while (argc--) {
|
|
rb_funcall(argv[argc], id_extend_object, 1, obj);
|
|
rb_funcall(argv[argc], id_extended, 1, obj);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* include(module, ...) -> self
|
|
*
|
|
* Invokes Module.append_features on each parameter in turn.
|
|
* Effectively adds the methods and constants in each module to the
|
|
* receiver.
|
|
*/
|
|
|
|
static VALUE
|
|
top_include(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
rb_thread_t *th = GET_THREAD();
|
|
|
|
if (th->top_wrapper) {
|
|
rb_warning("main.include in the wrapped load is effective only in wrapper module");
|
|
return rb_mod_include(argc, argv, th->top_wrapper);
|
|
}
|
|
return rb_mod_include(argc, argv, rb_cObject);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* using(module) -> self
|
|
*
|
|
* Import class refinements from <i>module</i> into the scope where
|
|
* #using is called.
|
|
*/
|
|
|
|
static VALUE
|
|
top_using(VALUE self, VALUE module)
|
|
{
|
|
const rb_cref_t *cref = rb_vm_cref();
|
|
rb_control_frame_t *prev_cfp = previous_frame(GET_EC());
|
|
|
|
if (CREF_NEXT(cref) || (prev_cfp && rb_vm_frame_method_entry(prev_cfp))) {
|
|
rb_raise(rb_eRuntimeError, "main.using is permitted only at toplevel");
|
|
}
|
|
if (rb_block_given_p()) {
|
|
ignored_block(module, "main.");
|
|
}
|
|
rb_using_module(rb_vm_cref_replace_with_duplicated_cref(), module);
|
|
return self;
|
|
}
|
|
|
|
static const VALUE *
|
|
errinfo_place(const rb_execution_context_t *ec)
|
|
{
|
|
const rb_control_frame_t *cfp = ec->cfp;
|
|
const rb_control_frame_t *end_cfp = RUBY_VM_END_CONTROL_FRAME(ec);
|
|
|
|
while (RUBY_VM_VALID_CONTROL_FRAME_P(cfp, end_cfp)) {
|
|
if (VM_FRAME_RUBYFRAME_P(cfp)) {
|
|
if (cfp->iseq->body->type == ISEQ_TYPE_RESCUE) {
|
|
return &cfp->ep[VM_ENV_INDEX_LAST_LVAR];
|
|
}
|
|
else if (cfp->iseq->body->type == ISEQ_TYPE_ENSURE &&
|
|
!THROW_DATA_P(cfp->ep[VM_ENV_INDEX_LAST_LVAR]) &&
|
|
!FIXNUM_P(cfp->ep[VM_ENV_INDEX_LAST_LVAR])) {
|
|
return &cfp->ep[VM_ENV_INDEX_LAST_LVAR];
|
|
}
|
|
}
|
|
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static VALUE
|
|
get_ec_errinfo(const rb_execution_context_t *ec)
|
|
{
|
|
const VALUE *ptr = errinfo_place(ec);
|
|
if (ptr) {
|
|
return *ptr;
|
|
}
|
|
else {
|
|
return ec->errinfo;
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
get_errinfo(void)
|
|
{
|
|
return get_ec_errinfo(GET_EC());
|
|
}
|
|
|
|
static VALUE
|
|
errinfo_getter(ID id, VALUE *_)
|
|
{
|
|
return get_errinfo();
|
|
}
|
|
|
|
/*! The current exception in the current thread.
|
|
*
|
|
* Same as \c $! in Ruby.
|
|
* \return the current exception or \c Qnil
|
|
* \ingroup exception
|
|
*/
|
|
VALUE
|
|
rb_errinfo(void)
|
|
{
|
|
return GET_EC()->errinfo;
|
|
}
|
|
|
|
/*! Sets the current exception (\c $!) to the given value
|
|
*
|
|
* \param[in] err an \c Exception object or \c Qnil.
|
|
* \exception TypeError if \a err is neither an exception nor \c nil.
|
|
* \note this function does not raise the exception.
|
|
* Use \c rb_raise() when you want to raise.
|
|
* \ingroup exception
|
|
*/
|
|
void
|
|
rb_set_errinfo(VALUE err)
|
|
{
|
|
if (!NIL_P(err) && !rb_obj_is_kind_of(err, rb_eException)) {
|
|
rb_raise(rb_eTypeError, "assigning non-exception to $!");
|
|
}
|
|
GET_EC()->errinfo = err;
|
|
}
|
|
|
|
static VALUE
|
|
errat_getter(ID id, VALUE *_)
|
|
{
|
|
VALUE err = get_errinfo();
|
|
if (!NIL_P(err)) {
|
|
return rb_get_backtrace(err);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
static void
|
|
errat_setter(VALUE val, ID id, VALUE *var)
|
|
{
|
|
VALUE err = get_errinfo();
|
|
if (NIL_P(err)) {
|
|
rb_raise(rb_eArgError, "$! not set");
|
|
}
|
|
set_backtrace(err, val);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* __method__ -> symbol
|
|
*
|
|
* Returns the name at the definition of the current method as a
|
|
* Symbol.
|
|
* If called outside of a method, it returns <code>nil</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_method_name(VALUE _)
|
|
{
|
|
ID fname = prev_frame_func(); /* need *method* ID */
|
|
|
|
if (fname) {
|
|
return ID2SYM(fname);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* __callee__ -> symbol
|
|
*
|
|
* Returns the called name of the current method as a Symbol.
|
|
* If called outside of a method, it returns <code>nil</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_callee_name(VALUE _)
|
|
{
|
|
ID fname = prev_frame_callee(); /* need *callee* ID */
|
|
|
|
if (fname) {
|
|
return ID2SYM(fname);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* __dir__ -> string
|
|
*
|
|
* Returns the canonicalized absolute path of the directory of the file from
|
|
* which this method is called. It means symlinks in the path is resolved.
|
|
* If <code>__FILE__</code> is <code>nil</code>, it returns <code>nil</code>.
|
|
* The return value equals to <code>File.dirname(File.realpath(__FILE__))</code>.
|
|
*
|
|
*/
|
|
static VALUE
|
|
f_current_dirname(VALUE _)
|
|
{
|
|
VALUE base = rb_current_realfilepath();
|
|
if (NIL_P(base)) {
|
|
return Qnil;
|
|
}
|
|
base = rb_file_dirname(base);
|
|
return base;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* global_variables -> array
|
|
*
|
|
* Returns an array of the names of global variables.
|
|
*
|
|
* global_variables.grep /std/ #=> [:$stdin, :$stdout, :$stderr]
|
|
*/
|
|
|
|
static VALUE
|
|
f_global_variables(VALUE _)
|
|
{
|
|
return rb_f_global_variables();
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* trace_var(symbol, cmd ) -> nil
|
|
* trace_var(symbol) {|val| block } -> nil
|
|
*
|
|
* Controls tracing of assignments to global variables. The parameter
|
|
* +symbol+ identifies the variable (as either a string name or a
|
|
* symbol identifier). _cmd_ (which may be a string or a
|
|
* +Proc+ object) or block is executed whenever the variable
|
|
* is assigned. The block or +Proc+ object receives the
|
|
* variable's new value as a parameter. Also see
|
|
* Kernel::untrace_var.
|
|
*
|
|
* trace_var :$_, proc {|v| puts "$_ is now '#{v}'" }
|
|
* $_ = "hello"
|
|
* $_ = ' there'
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* $_ is now 'hello'
|
|
* $_ is now ' there'
|
|
*/
|
|
|
|
static VALUE
|
|
f_trace_var(int c, const VALUE *a, VALUE _)
|
|
{
|
|
return rb_f_trace_var(c, a);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* untrace_var(symbol [, cmd] ) -> array or nil
|
|
*
|
|
* Removes tracing for the specified command on the given global
|
|
* variable and returns +nil+. If no command is specified,
|
|
* removes all tracing for that variable and returns an array
|
|
* containing the commands actually removed.
|
|
*/
|
|
|
|
static VALUE
|
|
f_untrace_var(int c, const VALUE *a, VALUE _)
|
|
{
|
|
return rb_f_untrace_var(c, a);
|
|
}
|
|
|
|
void
|
|
Init_eval(void)
|
|
{
|
|
rb_define_virtual_variable("$@", errat_getter, errat_setter);
|
|
rb_define_virtual_variable("$!", errinfo_getter, 0);
|
|
|
|
rb_define_global_function("raise", f_raise, -1);
|
|
rb_define_global_function("fail", f_raise, -1);
|
|
|
|
rb_define_global_function("global_variables", f_global_variables, 0);
|
|
|
|
rb_define_global_function("__method__", rb_f_method_name, 0);
|
|
rb_define_global_function("__callee__", rb_f_callee_name, 0);
|
|
rb_define_global_function("__dir__", f_current_dirname, 0);
|
|
|
|
rb_define_method(rb_cModule, "include", rb_mod_include, -1);
|
|
rb_define_method(rb_cModule, "prepend", rb_mod_prepend, -1);
|
|
|
|
rb_define_private_method(rb_cModule, "append_features", rb_mod_append_features, 1);
|
|
rb_define_private_method(rb_cModule, "extend_object", rb_mod_extend_object, 1);
|
|
rb_define_private_method(rb_cModule, "prepend_features", rb_mod_prepend_features, 1);
|
|
rb_define_private_method(rb_cModule, "refine", rb_mod_refine, 1);
|
|
rb_define_private_method(rb_cModule, "using", mod_using, 1);
|
|
rb_define_singleton_method(rb_cModule, "used_modules",
|
|
rb_mod_s_used_modules, 0);
|
|
rb_undef_method(rb_cClass, "refine");
|
|
|
|
rb_undef_method(rb_cClass, "module_function");
|
|
|
|
Init_vm_eval();
|
|
Init_eval_method();
|
|
|
|
rb_define_singleton_method(rb_cModule, "nesting", rb_mod_nesting, 0);
|
|
rb_define_singleton_method(rb_cModule, "constants", rb_mod_s_constants, -1);
|
|
|
|
rb_define_private_method(rb_singleton_class(rb_vm_top_self()),
|
|
"include", top_include, -1);
|
|
rb_define_private_method(rb_singleton_class(rb_vm_top_self()),
|
|
"using", top_using, 1);
|
|
|
|
rb_define_method(rb_mKernel, "extend", rb_obj_extend, -1);
|
|
|
|
rb_define_global_function("trace_var", f_trace_var, -1);
|
|
rb_define_global_function("untrace_var", f_untrace_var, -1);
|
|
|
|
rb_vm_register_special_exception(ruby_error_reenter, rb_eFatal, "exception reentered");
|
|
rb_vm_register_special_exception(ruby_error_stackfatal, rb_eFatal, "machine stack overflow in critical region");
|
|
|
|
id_signo = rb_intern_const("signo");
|
|
id_status = rb_intern_const("status");
|
|
}
|