diff options
Diffstat (limited to 'src/kernel.c')
| -rw-r--r-- | src/kernel.c | 161 |
1 files changed, 94 insertions, 67 deletions
diff --git a/src/kernel.c b/src/kernel.c index 5ca1736c3..3377f5a11 100644 --- a/src/kernel.c +++ b/src/kernel.c @@ -6,6 +6,7 @@ #include <mruby.h> #include <mruby/array.h> +#include <mruby/hash.h> #include <mruby/class.h> #include <mruby/proc.h> #include <mruby/string.h> @@ -27,15 +28,21 @@ typedef enum { NOEX_RESPONDS = 0x80 } mrb_method_flag_t; -static mrb_bool -mrb_obj_basic_to_s_p(mrb_state *mrb, mrb_value obj) +MRB_API mrb_bool +mrb_func_basic_p(mrb_state *mrb, mrb_value obj, mrb_sym mid, mrb_func_t func) { - struct RProc *me = mrb_method_search(mrb, mrb_class(mrb, obj), mrb_intern_lit(mrb, "to_s")); - if (MRB_PROC_CFUNC_P(me) && (me->body.func == mrb_any_to_s)) + struct RProc *me = mrb_method_search(mrb, mrb_class(mrb, obj), mid); + if (MRB_PROC_CFUNC_P(me) && (me->body.func == func)) return TRUE; return FALSE; } +static mrb_bool +mrb_obj_basic_to_s_p(mrb_state *mrb, mrb_value obj) +{ + return mrb_func_basic_p(mrb, obj, mrb_intern_lit(mrb, "to_s"), mrb_any_to_s); +} + /* 15.3.1.3.17 */ /* * call-seq: @@ -59,55 +66,6 @@ mrb_obj_inspect(mrb_state *mrb, mrb_value obj) return mrb_any_to_s(mrb, obj); } -/* 15.3.1.3.1 */ -/* 15.3.1.3.10 */ -/* 15.3.1.3.11 */ -/* - * call-seq: - * obj == other -> true or false - * obj.equal?(other) -> true or false - * obj.eql?(other) -> true or false - * - * Equality---At the <code>Object</code> level, <code>==</code> returns - * <code>true</code> only if <i>obj</i> and <i>other</i> are the - * same object. Typically, this method is overridden in descendant - * classes to provide class-specific meaning. - * - * Unlike <code>==</code>, the <code>equal?</code> method should never be - * overridden by subclasses: it is used to determine object identity - * (that is, <code>a.equal?(b)</code> iff <code>a</code> is the same - * object as <code>b</code>). - * - * The <code>eql?</code> method returns <code>true</code> if - * <i>obj</i> and <i>anObject</i> have the same value. Used by - * <code>Hash</code> to test members for equality. For objects of - * class <code>Object</code>, <code>eql?</code> is synonymous with - * <code>==</code>. Subclasses normally continue this tradition, but - * there are exceptions. <code>Numeric</code> types, for example, - * perform type conversion across <code>==</code>, but not across - * <code>eql?</code>, so: - * - * 1 == 1.0 #=> true - * 1.eql? 1.0 #=> false - */ -static mrb_value -mrb_obj_equal_m(mrb_state *mrb, mrb_value self) -{ - mrb_value arg; - - mrb_get_args(mrb, "o", &arg); - return mrb_bool_value(mrb_obj_equal(mrb, self, arg)); -} - -static mrb_value -mrb_obj_not_equal_m(mrb_state *mrb, mrb_value self) -{ - mrb_value arg; - - mrb_get_args(mrb, "o", &arg); - return mrb_bool_value(!mrb_equal(mrb, self, arg)); -} - /* 15.3.1.3.2 */ /* * call-seq: @@ -143,7 +101,7 @@ mrb_equal_m(mrb_state *mrb, mrb_value self) * <code>:name</code> notation, which returns the symbol id of * <code>name</code>. Replaces the deprecated <code>Object#id</code>. */ -static mrb_value +mrb_value mrb_obj_id_m(mrb_state *mrb, mrb_value self) { return mrb_fixnum_value(mrb_obj_id(self)); @@ -531,9 +489,6 @@ mrb_obj_init_copy(mrb_state *mrb, mrb_value self) } -/* implementation of instance_eval */ -mrb_value mrb_obj_instance_eval(mrb_state*, mrb_value); - MRB_API mrb_bool mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RClass* c) { @@ -956,6 +911,79 @@ mrb_obj_remove_instance_variable(mrb_state *mrb, mrb_value self) return val; } +void +mrb_method_missing(mrb_state *mrb, mrb_sym name, mrb_value self, mrb_value args) +{ + mrb_sym inspect; + mrb_value repr; + + inspect = mrb_intern_lit(mrb, "inspect"); + if (mrb->c->ci > mrb->c->cibase && mrb->c->ci[-1].mid == inspect) { + /* method missing in inspect; avoid recursion */ + repr = mrb_any_to_s(mrb, self); + } + else if (mrb_respond_to(mrb, self, inspect) && mrb->c->ci - mrb->c->cibase < 64) { + repr = mrb_funcall_argv(mrb, self, inspect, 0, 0); + if (mrb_string_p(repr) && RSTRING_LEN(repr) > 64) { + repr = mrb_any_to_s(mrb, self); + } + } + else { + repr = mrb_any_to_s(mrb, self); + } + + mrb_no_method_error(mrb, name, args, "undefined method '%S' for %S", + mrb_sym2str(mrb, name), repr); +} + +/* 15.3.1.3.30 */ +/* + * call-seq: + * obj.method_missing(symbol [, *args] ) -> result + * + * Invoked by Ruby when <i>obj</i> is sent a message it cannot handle. + * <i>symbol</i> is the symbol for the method called, and <i>args</i> + * are any arguments that were passed to it. By default, the interpreter + * raises an error when this method is called. However, it is possible + * to override the method to provide more dynamic behavior. + * If it is decided that a particular method should not be handled, then + * <i>super</i> should be called, so that ancestors can pick up the + * missing method. + * The example below creates + * a class <code>Roman</code>, which responds to methods with names + * consisting of roman numerals, returning the corresponding integer + * values. + * + * class Roman + * def romanToInt(str) + * # ... + * end + * def method_missing(methId) + * str = methId.id2name + * romanToInt(str) + * end + * end + * + * r = Roman.new + * r.iv #=> 4 + * r.xxiii #=> 23 + * r.mm #=> 2000 + */ +#ifdef MRB_DEFAULT_METHOD_MISSING +static mrb_value +mrb_obj_missing(mrb_state *mrb, mrb_value mod) +{ + mrb_sym name; + mrb_value *a; + mrb_int alen; + + mrb_get_args(mrb, "n*", &name, &a, &alen); + mrb_method_missing(mrb, name, mod, mrb_ary_new_from_values(mrb, alen, a)); + /* not reached */ + return mrb_nil_value(); +} +#endif + static inline mrb_bool basic_obj_respond_to(mrb_state *mrb, mrb_value obj, mrb_sym id, int pub) { @@ -1106,8 +1134,8 @@ mrb_obj_ceqq(mrb_state *mrb, mrb_value self) static mrb_value mrb_local_variables(mrb_state *mrb, mrb_value self) { - mrb_value ret; struct RProc *proc; + mrb_value vars; struct mrb_irep *irep; size_t i; @@ -1121,10 +1149,10 @@ mrb_local_variables(mrb_state *mrb, mrb_value self) if (!irep->lv) { return mrb_ary_new(mrb); } - ret = mrb_ary_new_capa(mrb, irep->nlocals - 1); + vars = mrb_hash_new(mrb); for (i = 0; i + 1 < irep->nlocals; ++i) { if (irep->lv[i].name) { - mrb_ary_push(mrb, ret, mrb_symbol_value(irep->lv[i].name)); + mrb_hash_set(mrb, vars, mrb_symbol_value(irep->lv[i].name), mrb_true_value()); } } if (proc->env) { @@ -1137,7 +1165,7 @@ mrb_local_variables(mrb_state *mrb, mrb_value self) if (irep->lv) { for (i = 0; i + 1 < irep->nlocals; ++i) { if (irep->lv[i].name) { - mrb_ary_push(mrb, ret, mrb_symbol_value(irep->lv[i].name)); + mrb_hash_set(mrb, vars, mrb_symbol_value(irep->lv[i].name), mrb_true_value()); } } } @@ -1146,9 +1174,10 @@ mrb_local_variables(mrb_state *mrb, mrb_value self) } } - return ret; + return mrb_hash_keys(mrb, vars); } +mrb_value mrb_obj_equal_m(mrb_state *mrb, mrb_value); void mrb_init_kernel(mrb_state *mrb) { @@ -1164,11 +1193,7 @@ mrb_init_kernel(mrb_state *mrb) mrb_define_method(mrb, krn, "singleton_class", mrb_singleton_class, MRB_ARGS_NONE()); - mrb_define_method(mrb, krn, "==", mrb_obj_equal_m, MRB_ARGS_REQ(1)); /* 15.3.1.3.1 */ - mrb_define_method(mrb, krn, "!=", mrb_obj_not_equal_m, MRB_ARGS_REQ(1)); mrb_define_method(mrb, krn, "===", mrb_equal_m, MRB_ARGS_REQ(1)); /* 15.3.1.3.2 */ - mrb_define_method(mrb, krn, "__id__", mrb_obj_id_m, MRB_ARGS_NONE()); /* 15.3.1.3.3 */ - mrb_define_method(mrb, krn, "__send__", mrb_f_send, MRB_ARGS_ANY()); /* 15.3.1.3.4 */ mrb_define_method(mrb, krn, "block_given?", mrb_f_block_given_p_m, MRB_ARGS_NONE()); /* 15.3.1.3.6 */ mrb_define_method(mrb, krn, "class", mrb_obj_class_m, MRB_ARGS_NONE()); /* 15.3.1.3.7 */ mrb_define_method(mrb, krn, "clone", mrb_obj_clone, MRB_ARGS_NONE()); /* 15.3.1.3.8 */ @@ -1182,7 +1207,6 @@ mrb_init_kernel(mrb_state *mrb) mrb_define_method(mrb, krn, "hash", mrb_obj_hash, MRB_ARGS_NONE()); /* 15.3.1.3.15 */ mrb_define_method(mrb, krn, "initialize_copy", mrb_obj_init_copy, MRB_ARGS_REQ(1)); /* 15.3.1.3.16 */ mrb_define_method(mrb, krn, "inspect", mrb_obj_inspect, MRB_ARGS_NONE()); /* 15.3.1.3.17 */ - mrb_define_method(mrb, krn, "instance_eval", mrb_obj_instance_eval, MRB_ARGS_ANY()); /* 15.3.1.3.18 */ mrb_define_method(mrb, krn, "instance_of?", obj_is_instance_of, MRB_ARGS_REQ(1)); /* 15.3.1.3.19 */ mrb_define_method(mrb, krn, "instance_variable_defined?", mrb_obj_ivar_defined, MRB_ARGS_REQ(1)); /* 15.3.1.3.20 */ mrb_define_method(mrb, krn, "instance_variable_get", mrb_obj_ivar_get, MRB_ARGS_REQ(1)); /* 15.3.1.3.21 */ @@ -1192,6 +1216,9 @@ mrb_init_kernel(mrb_state *mrb) mrb_define_method(mrb, krn, "iterator?", mrb_f_block_given_p_m, MRB_ARGS_NONE()); /* 15.3.1.3.25 */ mrb_define_method(mrb, krn, "kind_of?", mrb_obj_is_kind_of_m, MRB_ARGS_REQ(1)); /* 15.3.1.3.26 */ mrb_define_method(mrb, krn, "local_variables", mrb_local_variables, MRB_ARGS_NONE()); /* 15.3.1.3.28 */ +#ifdef MRB_DEFAULT_METHOD_MISSING + mrb_define_method(mrb, krn, "method_missing", mrb_obj_missing, MRB_ARGS_ANY()); /* 15.3.1.3.30 */ +#endif mrb_define_method(mrb, krn, "methods", mrb_obj_methods_m, MRB_ARGS_OPT(1)); /* 15.3.1.3.31 */ mrb_define_method(mrb, krn, "nil?", mrb_false, MRB_ARGS_NONE()); /* 15.3.1.3.32 */ mrb_define_method(mrb, krn, "object_id", mrb_obj_id_m, MRB_ARGS_NONE()); /* 15.3.1.3.33 */ |