diff options
| author | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2003-03-26 07:01:14 +0000 |
|---|---|---|
| committer | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2003-03-26 07:01:14 +0000 |
| commit | e9b5878c4168ec6b5ed5129d897ee9be7636ca71 (patch) | |
| tree | 9229296296e4a89f45b3d416b30559ee75768d44 /README.EXT | |
| parent | 8478ba513fd23c72b99790144be4fa17ebef3b35 (diff) | |
* eval.c (avalue_splat): new function to do unary * (splat)
operator.
* eval.c (avalue_to_svalue,svalue_to_avalue,svalue_to_mrhs): do
not use implicit "to_ary" conversion.
* ext/curses/curses.c (GetWINDOW,GetMOUSE): add taint check.
* ext/curses/curses.c (curses_init_screen): ditto.
* ext/curses/curses.c (window_initialize): ditto.
* gc.c (os_each_obj): prohibit ObjectSpace#each_object in safe
mode ($SAFE >= 4).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3616 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'README.EXT')
| -rw-r--r-- | README.EXT | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/README.EXT b/README.EXT index 4bbe1202e6..97e57934be 100644 --- a/README.EXT +++ b/README.EXT @@ -94,9 +94,20 @@ The T_FIXNUM data is a 31bit length fixed integer (63bit length on some machines), which can be convert to a C integer by using the FIX2INT() macro. There is also NUM2INT() which converts any Ruby numbers into C integers. The NUM2INT() macro includes a type check, so -an exception will be raised if the conversion failed. There are also -a macro NUM2DBL() to retrieve the double float value and STR2CSTR() is -useful to get the string as char*. +an exception will be raised if the conversion failed. NUM2DBL() can +be used to retrieve the double float value in same way. + +To get char* from a VALUE, version 1.7 recommend to use new macros +StringValue() and StringValuePtr(). StringValue(var) replaces var's +value to the result of "var.to_str()". StringValuePtr(var) does same +replacement and returns char* representation of var. These macros +will skip the replacement if var is a String. Notice that the macros +requires to take only lvalue as their argument, to change the value +of var in the replacement. + +In version 1.6 or earlier, STR2CSTR() was used to do same thing +but now it is obsoleted in version 1.7 because of STR2CSTR() has +a risk of dangling pointer problem in to_str() impliclit conversion. Other data types have corresponding C structures, e.g. struct RArray for T_ARRAY etc. The VALUE of the type which has corresponding structure |