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gnuhub / gnuhub_ruby

deep in the internal of ruby
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how to learn the internal of ruby? #2

Open gnuhub opened 10 years ago

gnuhub commented 10 years ago

Ruby Hacking Guide

gnuhub commented 10 years ago

Chapter 2: Objects

gnuhub commented 10 years ago

VALUE and object struct

https://github.com/ruby/ruby/blob/trunk/include/ruby/ruby.h#L88

typedef unsigned long VALUE;
gnuhub commented 10 years ago 
 VALUE v1;
    printf("%d\n",sizeof(v1));
8
Hello Ruby from C!
gnuhub commented 10 years ago

object struct

gnuhub commented 10 years ago

https://github.com/ruby/ruby/blob/trunk/include/ruby/ruby.h#L748

struct RBasic {
    VALUE flags;
    const VALUE klass;
}
gnuhub commented 10 years ago 
VALUE flags;

struct type [0,71] ch_object_flags

gnuhub commented 10 years ago

https://github.com/ruby/ruby/blob/trunk/include/ruby/ruby.h#L442

enum ruby_value_type {
    RUBY_T_NONE   = 0x00,

    RUBY_T_OBJECT = 0x01,
    RUBY_T_CLASS  = 0x02,
    RUBY_T_MODULE = 0x03,
    RUBY_T_FLOAT  = 0x04,
    RUBY_T_STRING = 0x05,
    RUBY_T_REGEXP = 0x06,
    RUBY_T_ARRAY  = 0x07,
    RUBY_T_HASH   = 0x08,
    RUBY_T_STRUCT = 0x09,
    RUBY_T_BIGNUM = 0x0a,
    RUBY_T_FILE   = 0x0b,
    RUBY_T_DATA   = 0x0c,
    RUBY_T_MATCH  = 0x0d,
    RUBY_T_COMPLEX  = 0x0e,
    RUBY_T_RATIONAL = 0x0f,

    RUBY_T_NIL    = 0x11,
    RUBY_T_TRUE   = 0x12,
    RUBY_T_FALSE  = 0x13,
    RUBY_T_SYMBOL = 0x14,
    RUBY_T_FIXNUM = 0x15,

    RUBY_T_UNDEF  = 0x1b,
    RUBY_T_NODE   = 0x1c,
    RUBY_T_ICLASS = 0x1d,
    RUBY_T_ZOMBIE = 0x1e,

    RUBY_T_MASK   = 0x1f
};

#define T_NONE   RUBY_T_NONE
#define T_NIL    RUBY_T_NIL
#define T_OBJECT RUBY_T_OBJECT
#define T_CLASS  RUBY_T_CLASS
#define T_ICLASS RUBY_T_ICLASS
#define T_MODULE RUBY_T_MODULE
#define T_FLOAT  RUBY_T_FLOAT
#define T_STRING RUBY_T_STRING
#define T_REGEXP RUBY_T_REGEXP
#define T_ARRAY  RUBY_T_ARRAY
#define T_HASH   RUBY_T_HASH
#define T_STRUCT RUBY_T_STRUCT
#define T_BIGNUM RUBY_T_BIGNUM
#define T_FILE   RUBY_T_FILE
#define T_FIXNUM RUBY_T_FIXNUM
#define T_TRUE   RUBY_T_TRUE
#define T_FALSE  RUBY_T_FALSE
#define T_DATA   RUBY_T_DATA
#define T_MATCH  RUBY_T_MATCH
#define T_SYMBOL RUBY_T_SYMBOL
#define T_RATIONAL RUBY_T_RATIONAL
#define T_COMPLEX RUBY_T_COMPLEX
#define T_UNDEF  RUBY_T_UNDEF
#define T_NODE   RUBY_T_NODE
#define T_ZOMBIE RUBY_T_ZOMBIE
#define T_MASK   RUBY_T_MASK
gnuhub commented 10 years ago
1 2 3 4
T_NONE RUBY_T_NONE 0x00 0
T_OBJECT RUBY_T_OBJECT 0x01 1
T_CLASS RUBY_T_CLASS 0x02 2
T_MODULE RUBY_T_MODULE 0x03 3
T_FLOAT RUBY_T_FLOAT 0x04 4
T_STRING RUBY_T_STRING 0x05 5
T_REGEXP RUBY_T_REGEXP 0x06 6
T_ARRAY RUBY_T_ARRAY 0x07 7
T_HASH RUBY_T_HASH 0x08 8
T_STRUCT RUBY_T_STRUCT 0x09 9
T_BIGNUM RUBY_T_BIGNUM 0x0a 10
T_FILE RUBY_T_FILE 0x0b 11
T_DATA RUBY_T_DATA 0x0c 12
T_MATCH RUBY_T_MATCH 0x0d 13
T_COMPLEX RUBY_T_COMPLEX 0x0e 14
T_RATIONAL RUBY_T_RATIONAL 0x0f 15
T_NIL RUBY_T_NIL 0x11 16
T_TRUE RUBY_T_TRUE 0x12 17
T_FALSE RUBY_T_FALSE 0x13 18
T_SYMBOL RUBY_T_SYMBOL 0x14 19
T_FIXNUM RUBY_T_FIXNUM 0x15 20
T_UNDEF RUBY_T_UNDEF 0x1b 27
T_NODE RUBY_T_NODE 0x1c 28
T_ICLASS RUBY_T_ICLASS 0x1d 29
T_ZOMBIE RUBY_T_ZOMBIE 0x1e 30
T_MASK RUBY_T_MASK 0x1f 31