Crate fmt_macros [] [src]

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, and unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Macro support for format strings

These structures are used when parsing format strings for the compiler. Parsing does not happen at runtime: structures of std::fmt::rt are generated instead.

Reexports

pub use self::Piece::*;
pub use self::Position::*;
pub use self::Alignment::*;
pub use self::Flag::*;
pub use self::Count::*;

Structs

Argument [
Experimental
]

Representation of an argument specification.

FormatSpec [
Experimental
]

Specification for the formatting of an argument in the format string.

Parser [
Experimental
]

The parser structure for interpreting the input format string. This is modeled as an iterator over Piece structures to form a stream of tokens being output.

Enums

Alignment [
Experimental
]

Enum of alignments which are supported.

Count [
Experimental
]

A count is used for the precision and width parameters of an integer, and can reference either an argument or a literal integer.

Flag [
Experimental
]

Various flags which can be applied to format strings. The meaning of these flags is defined by the formatters themselves.

Piece [
Experimental
]

A piece is a portion of the format string which represents the next part to emit. These are emitted as a stream by the Parser class.

Position [
Experimental
]

Enum describing where an argument for a format can be located.