diff options
Diffstat (limited to 'include/ruby/internal/encoding/symbol.h')
| -rw-r--r-- | include/ruby/internal/encoding/symbol.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/include/ruby/internal/encoding/symbol.h b/include/ruby/internal/encoding/symbol.h new file mode 100644 index 0000000000..9cd1b0dbf4 --- /dev/null +++ b/include/ruby/internal/encoding/symbol.h @@ -0,0 +1,100 @@ +#ifndef RUBY_INTERNAL_ENCODING_SYMBOL_H /*-*-C++-*-vi:se ft=cpp:*/ +#define RUBY_INTERNAL_ENCODING_SYMBOL_H +/** + * @file + * @author Ruby developers <ruby-core@ruby-lang.org> + * @copyright This file is a part of the programming language Ruby. + * Permission is hereby granted, to either redistribute and/or + * modify this file, provided that the conditions mentioned in the + * file COPYING are met. Consult the file for details. + * @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are + * implementation details. Don't take them as canon. They could + * rapidly appear then vanish. The name (path) of this header file + * is also an implementation detail. Do not expect it to persist + * at the place it is now. Developers are free to move it anywhere + * anytime at will. + * @note To ruby-core: remember that this header can be possibly + * recursively included from extension libraries written in C++. + * Do not expect for instance `__VA_ARGS__` is always available. + * We assume C99 for ruby itself but we don't assume languages of + * extension libraries. They could be written in C++98. + * @brief Routines to manipulate encodings of symbols. + */ + +#include "ruby/internal/attr/nonnull.h" +#include "ruby/internal/dllexport.h" +#include "ruby/internal/encoding/encoding.h" +#include "ruby/internal/value.h" + +RBIMPL_SYMBOL_EXPORT_BEGIN() + +/** + * Identical to rb_intern2(), except it additionally takes an encoding. + * + * @param[in] name The name of the id. + * @param[in] len Length of `name`. + * @param[in] enc `name`'s encoding. + * @exception rb_eRuntimeError Too many symbols. + * @return A (possibly new) id whose value is the given name. + * @note These days Ruby internally has two kinds of symbols + * (static/dynamic). Symbols created using this function would + * become static ones; i.e. would never be garbage collected. It + * is up to you to avoid memory leaks. Think twice before using + * it. + */ +ID rb_intern3(const char *name, long len, rb_encoding *enc); + +RBIMPL_ATTR_NONNULL(()) +/** + * Identical to rb_symname_p(), except it additionally takes an encoding. + * + * @param[in] str A C string to check. + * @param[in] enc `str`'s encoding. + * @retval 1 It is a valid symbol name. + * @retval 0 It is invalid as a symbol name. + */ +int rb_enc_symname_p(const char *str, rb_encoding *enc); + +/** + * Identical to rb_enc_symname_p(), except it additionally takes the passed + * string's length. This is needed for strings containing NUL bytes, like in + * case of UTF-32. + * + * @param[in] name A C string to check. + * @param[in] len Number of bytes of `str`. + * @param[in] enc `str`'s encoding. + * @retval 1 It is a valid symbol name. + * @retval 0 It is invalid as a symbol name. + */ +int rb_enc_symname2_p(const char *name, long len, rb_encoding *enc); + +/** + * Identical to rb_check_id(), except it takes a pointer to a memory region + * instead of Ruby's string. + * + * @param[in] ptr A pointer to a memory region. + * @param[in] len Number of bytes of `ptr`. + * @param[in] enc Encoding of `ptr`. + * @exception rb_eEncodingError `ptr` contains non-ASCII according to `enc`. + * @retval 0 No such id ever existed in the history. + * @retval otherwise The id that represents the given name. + */ +ID rb_check_id_cstr(const char *ptr, long len, rb_encoding *enc); + +/** + * Identical to rb_check_id_cstr(), except for the return type. It can also be + * seen as a routine identical to rb_check_symbol(), except it takes a pointer + * to a memory region instead of Ruby's string. + * + * @param[in] ptr A pointer to a memory region. + * @param[in] len Number of bytes of `ptr`. + * @param[in] enc Encoding of `ptr`. + * @exception rb_eEncodingError `ptr` contains non-ASCII according to `enc`. + * @retval RUBY_Qnil No such id ever existed in the history. + * @retval otherwise The id that represents the given name. + */ +VALUE rb_check_symbol_cstr(const char *ptr, long len, rb_encoding *enc); + +RBIMPL_SYMBOL_EXPORT_END() + +#endif /* RUBY_INTERNAL_ENCODING_SYMBOL_H */ |