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2014-07-07Add libunicode; move unicode functions from corekwantam-5537/+0
- created new crate, libunicode, below libstd - split Char trait into Char (libcore) and UnicodeChar (libunicode) - Unicode-aware functions now live in libunicode - is_alphabetic, is_XID_start, is_XID_continue, is_lowercase, is_uppercase, is_whitespace, is_alphanumeric, is_control, is_digit, to_uppercase, to_lowercase - added width method in UnicodeChar trait - determines printed width of character in columns, or None if it is a non-NULL control character - takes a boolean argument indicating whether the present context is CJK or not (characters with 'A'mbiguous widths are double-wide in CJK contexts, single-wide otherwise) - split StrSlice into StrSlice (libcore) and UnicodeStrSlice (libunicode) - functionality formerly in StrSlice that relied upon Unicode functionality from Char is now in UnicodeStrSlice - words, is_whitespace, is_alphanumeric, trim, trim_left, trim_right - also moved Words type alias into libunicode because words method is in UnicodeStrSlice - unified Unicode tables from libcollections, libcore, and libregex into libunicode - updated unicode.py in src/etc to generate aforementioned tables - generated new tables based on latest Unicode data - added UnicodeChar and UnicodeStrSlice traits to prelude - libunicode is now the collection point for the std::char module, combining the libunicode functionality with the Char functionality from libcore - thus, moved doc comment for char from core::char to unicode::char - libcollections remains the collection point for std::str The Unicode-aware functions that previously lived in the Char and StrSlice traits are no longer available to programs that only use libcore. To regain use of these methods, include the libunicode crate and use the UnicodeChar and/or UnicodeStrSlice traits: extern crate unicode; use unicode::UnicodeChar; use unicode::UnicodeStrSlice; use unicode::Words; // if you want to use the words() method NOTE: this does *not* impact programs that use libstd, since UnicodeChar and UnicodeStrSlice have been added to the prelude. closes #15224 [breaking-change]
2014-05-17syntax: Tighten search paths for inner modulesAlex Crichton-0/+5537
This is an implementation of RFC 16. A module can now only be loaded if the module declaring `mod name;` "owns" the current directory. A module is considered as owning its directory if it meets one of the following criteria: * It is the top-level crate file * It is a `mod.rs` file * It was loaded via `#[path]` * It was loaded via `include!` * The module was declared via an inline `mod foo { ... }` statement For example, this directory structure is now invalid // lib.rs mod foo; // foo.rs mod bar; // bar.rs; fn bar() {} With this change `foo.rs` must be renamed to `foo/mod.rs`, and `bar.rs` must be renamed to `foo/bar.rs`. This makes it clear that `bar` is a submodule of `foo`, and can only be accessed through `foo`. RFC: 0016-module-file-system-hierarchy Closes #14180 [breaking-change]