1 files changed, 331 insertions, 0 deletions
diff --git a/eval_intern.h b/eval_intern.h
new file mode 100644
index 0000000000..91808f1f29
--- /dev/null
+++ b/eval_intern.h
@@ -0,0 +1,331 @@
+#ifndef RUBY_EVAL_INTERN_H
+#define RUBY_EVAL_INTERN_H
+
+#include "ruby/ruby.h"
+#include "vm_core.h"
+
+static inline void
+vm_passed_block_handler_set(rb_execution_context_t *ec, VALUE block_handler)
+{
+    vm_block_handler_verify(block_handler);
+    ec->passed_block_handler = block_handler;
+}
+
+static inline void
+pass_passed_block_handler(rb_execution_context_t *ec)
+{
+    VALUE block_handler = rb_vm_frame_block_handler(ec->cfp);
+    vm_passed_block_handler_set(ec, block_handler);
+    VM_ENV_FLAGS_SET(ec->cfp->ep, VM_FRAME_FLAG_PASSED);
+}
+
+#define PASS_PASSED_BLOCK_HANDLER_EC(ec) pass_passed_block_handler(ec)
+#define PASS_PASSED_BLOCK_HANDLER() pass_passed_block_handler(GET_EC())
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+
+#include <stdio.h>
+#if defined(__wasm__) && !defined(__EMSCRIPTEN__)
+# include "wasm/setjmp.h"
+#else
+# include <setjmp.h>
+#endif
+
+#ifdef __APPLE__
+# ifdef HAVE_CRT_EXTERNS_H
+#  include <crt_externs.h>
+# else
+#  include "missing/crt_externs.h"
+# endif
+#endif
+
+#ifndef HAVE_STRING_H
+char *strrchr(const char *, const char);
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_NET_SOCKET_H
+#include <net/socket.h>
+#endif
+
+#define ruby_setjmp(env) RUBY_SETJMP(env)
+#define ruby_longjmp(env,val) RUBY_LONGJMP((env),(val))
+#ifdef __CYGWIN__
+# ifndef _setjmp
+int _setjmp(jmp_buf);
+# endif
+# ifndef _longjmp
+NORETURN(void _longjmp(jmp_buf, int));
+# endif
+#endif
+
+#include <sys/types.h>
+#include <signal.h>
+#include <errno.h>
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+/*
+  Solaris sys/select.h switches select to select_large_fdset to support larger
+  file descriptors if FD_SETSIZE is larger than 1024 on 32bit environment.
+  But Ruby doesn't change FD_SETSIZE because fd_set is allocated dynamically.
+  So following definition is required to use select_large_fdset.
+*/
+#ifdef HAVE_SELECT_LARGE_FDSET
+#define select(n, r, w, e, t) select_large_fdset((n), (r), (w), (e), (t))
+extern int select_large_fdset(int, fd_set *, fd_set *, fd_set *, struct timeval *);
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#include <sys/stat.h>
+
+#define EC_PUSH_TAG(ec) do { \
+  rb_execution_context_t * const _ec = (ec); \
+  struct rb_vm_tag _tag; \
+  _tag.state = TAG_NONE; \
+  _tag.tag = Qundef; \
+  _tag.prev = _ec->tag; \
+  _tag.lock_rec = rb_ec_vm_lock_rec(_ec); \
+  rb_vm_tag_jmpbuf_init(&_tag.buf); \
+
+#define EC_POP_TAG() \
+  _ec->tag = _tag.prev; \
+  rb_vm_tag_jmpbuf_deinit(&_tag.buf); \
+} while (0)
+
+#define EC_TMPPOP_TAG() \
+  _ec->tag = _tag.prev
+
+#define EC_REPUSH_TAG() (void)(_ec->tag = &_tag)
+
+#if defined __GNUC__ && __GNUC__ == 4 && (__GNUC_MINOR__ >= 6 && __GNUC_MINOR__ <= 8) || defined __clang__
+/* This macro prevents GCC 4.6--4.8 from emitting maybe-uninitialized warnings.
+ * This macro also prevents Clang from dumping core in EC_EXEC_TAG().
+ * (I confirmed Clang 4.0.1 and 5.0.0.)
+ */
+# define VAR_FROM_MEMORY(var) __extension__(*(__typeof__(var) volatile *)&(var))
+# define VAR_INITIALIZED(var) ((var) = VAR_FROM_MEMORY(var))
+# define VAR_NOCLOBBERED(var) volatile var
+#else
+# define VAR_FROM_MEMORY(var) (var)
+# define VAR_INITIALIZED(var) ((void)&(var))
+# define VAR_NOCLOBBERED(var) var
+#endif
+
+static inline void
+rb_ec_vm_lock_rec_check(const rb_execution_context_t *ec, unsigned int recorded_lock_rec)
+{
+    unsigned int current_lock_rec = rb_ec_vm_lock_rec(ec);
+    if (current_lock_rec != recorded_lock_rec) {
+        rb_ec_vm_lock_rec_release(ec, recorded_lock_rec, current_lock_rec);
+    }
+}
+
+/* clear ec->tag->state, and return the value */
+static inline int
+rb_ec_tag_state(const rb_execution_context_t *ec)
+{
+    struct rb_vm_tag *tag = ec->tag;
+    enum ruby_tag_type state = tag->state;
+    tag->state = TAG_NONE;
+    rb_ec_vm_lock_rec_check(ec, tag->lock_rec);
+    RBIMPL_ASSUME(state > TAG_NONE);
+    RBIMPL_ASSUME(state <= TAG_FATAL);
+    return state;
+}
+
+NORETURN(static inline void rb_ec_tag_jump(const rb_execution_context_t *ec, enum ruby_tag_type st));
+static inline void
+rb_ec_tag_jump(const rb_execution_context_t *ec, enum ruby_tag_type st)
+{
+    RUBY_ASSERT(st > TAG_NONE && st <= TAG_FATAL, ": Invalid tag jump: %d", (int)st);
+    ec->tag->state = st;
+    ruby_longjmp(RB_VM_TAG_JMPBUF_GET(ec->tag->buf), 1);
+}
+
+/*
+  setjmp() in assignment expression rhs is undefined behavior
+  [ISO/IEC 9899:1999] 7.13.1.1
+*/
+#define EC_EXEC_TAG() \
+    (UNLIKELY(ruby_setjmp(RB_VM_TAG_JMPBUF_GET(_tag.buf))) ? rb_ec_tag_state(VAR_FROM_MEMORY(_ec)) : (EC_REPUSH_TAG(), 0))
+
+#define EC_JUMP_TAG(ec, st) rb_ec_tag_jump(ec, st)
+
+#define INTERNAL_EXCEPTION_P(exc) FIXNUM_P(exc)
+
+/* CREF operators */
+
+#define CREF_FL_PUSHED_BY_EVAL IMEMO_FL_USER1
+#define CREF_FL_OMOD_SHARED    IMEMO_FL_USER2
+#define CREF_FL_SINGLETON      IMEMO_FL_USER3
+
+static inline int CREF_SINGLETON(const rb_cref_t *cref);
+
+static inline VALUE
+CREF_CLASS(const rb_cref_t *cref)
+{
+    if (CREF_SINGLETON(cref)) {
+        return CLASS_OF(cref->klass_or_self);
+    }
+    else {
+        return cref->klass_or_self;
+    }
+}
+
+static inline VALUE
+CREF_CLASS_FOR_DEFINITION(const rb_cref_t *cref)
+{
+    if (CREF_SINGLETON(cref)) {
+        return rb_singleton_class(cref->klass_or_self);
+    }
+    else {
+        return cref->klass_or_self;
+    }
+}
+
+static inline rb_cref_t *
+CREF_NEXT(const rb_cref_t *cref)
+{
+    return cref->next;
+}
+
+static inline const rb_scope_visibility_t *
+CREF_SCOPE_VISI(const rb_cref_t *cref)
+{
+    return &cref->scope_visi;
+}
+
+static inline VALUE
+CREF_REFINEMENTS(const rb_cref_t *cref)
+{
+    return cref->refinements;
+}
+
+static inline void
+CREF_REFINEMENTS_SET(rb_cref_t *cref, VALUE refs)
+{
+    RB_OBJ_WRITE(cref, &cref->refinements, refs);
+}
+
+static inline int
+CREF_PUSHED_BY_EVAL(const rb_cref_t *cref)
+{
+    return cref->flags & CREF_FL_PUSHED_BY_EVAL;
+}
+
+static inline void
+CREF_PUSHED_BY_EVAL_SET(rb_cref_t *cref)
+{
+    cref->flags |= CREF_FL_PUSHED_BY_EVAL;
+}
+
+static inline int
+CREF_SINGLETON(const rb_cref_t *cref)
+{
+    return cref->flags & CREF_FL_SINGLETON;
+}
+
+static inline void
+CREF_SINGLETON_SET(rb_cref_t *cref)
+{
+    cref->flags |= CREF_FL_SINGLETON;
+}
+
+static inline int
+CREF_OMOD_SHARED(const rb_cref_t *cref)
+{
+    return cref->flags & CREF_FL_OMOD_SHARED;
+}
+
+static inline void
+CREF_OMOD_SHARED_SET(rb_cref_t *cref)
+{
+    cref->flags |= CREF_FL_OMOD_SHARED;
+}
+
+static inline void
+CREF_OMOD_SHARED_UNSET(rb_cref_t *cref)
+{
+    cref->flags &= ~CREF_FL_OMOD_SHARED;
+}
+
+enum {
+    RAISED_EXCEPTION = 1,
+    RAISED_STACKOVERFLOW = 2,
+    RAISED_NOMEMORY = 4
+};
+#define rb_ec_raised_set(ec, f)   ((ec)->raised_flag |= (f))
+#define rb_ec_raised_reset(ec, f) ((ec)->raised_flag &= ~(f))
+#define rb_ec_raised_p(ec, f)    (((ec)->raised_flag & (f)) != 0)
+#define rb_ec_raised_clear(ec)    ((ec)->raised_flag = 0)
+int rb_ec_set_raised(rb_execution_context_t *ec);
+int rb_ec_reset_raised(rb_execution_context_t *ec);
+int rb_ec_stack_check(rb_execution_context_t *ec);
+
+VALUE rb_f_eval(int argc, const VALUE *argv, VALUE self);
+VALUE rb_make_exception(int argc, const VALUE *argv);
+
+NORETURN(void rb_method_name_error(VALUE, VALUE));
+
+NORETURN(void rb_fiber_start(rb_fiber_t*));
+
+NORETURN(void rb_print_undef(VALUE, ID, rb_method_visibility_t));
+NORETURN(void rb_print_undef_str(VALUE, VALUE));
+NORETURN(void rb_print_inaccessible(VALUE, ID, rb_method_visibility_t));
+NORETURN(void rb_vm_localjump_error(const char *,VALUE, int));
+NORETURN(void rb_vm_jump_tag_but_local_jump(enum ruby_tag_type));
+
+VALUE rb_vm_make_jump_tag_but_local_jump(enum ruby_tag_type state, VALUE val);
+rb_cref_t *rb_vm_cref(void);
+rb_cref_t *rb_vm_cref_replace_with_duplicated_cref(void);
+VALUE rb_vm_call_cfunc(VALUE recv, VALUE (*func)(VALUE), VALUE arg, VALUE block_handler, VALUE filename);
+VALUE rb_vm_call_cfunc_in_box(VALUE recv, VALUE (*func)(VALUE, VALUE), VALUE arg1, VALUE arg2, VALUE filename, const rb_box_t *box);
+void rb_vm_frame_flag_set_box_require(const rb_execution_context_t *ec);
+const rb_box_t *rb_vm_current_box(const rb_execution_context_t *ec);
+const rb_box_t *rb_vm_caller_box(const rb_execution_context_t *ec);
+const rb_box_t *rb_vm_loading_box(const rb_execution_context_t *ec);
+void rb_vm_set_progname(VALUE filename);
+VALUE rb_vm_cbase(void);
+
+/* vm_backtrace.c */
+#define RUBY_BACKTRACE_START 0
+#define RUBY_ALL_BACKTRACE_LINES -1
+VALUE rb_ec_backtrace_object(const rb_execution_context_t *ec);
+VALUE rb_ec_backtrace_str_ary(const rb_execution_context_t *ec, long lev, long n);
+VALUE rb_ec_backtrace_location_ary(const rb_execution_context_t *ec, long lev, long n, bool skip_internal);
+
+#ifndef CharNext		/* defined as CharNext[AW] on Windows. */
+# ifdef HAVE_MBLEN
+#  define CharNext(p) rb_char_next(p)
+static inline char *
+rb_char_next(const char *p)
+{
+    if (p) {
+        int len = mblen(p, RUBY_MBCHAR_MAXSIZE);
+        p += len > 0 ? len : 1;
+    }
+    return (char *)p;
+}
+# else
+#  define CharNext(p) ((p) + 1)
+# endif
+#endif
+
+#endif /* RUBY_EVAL_INTERN_H */