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files >> //opt/alt/ruby32/include/ruby/internal/encoding/symbol.h
#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 */
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