Crate rustc_parse_format

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.

Re-exports

• pub use Alignment::*;
• pub use Count::*;
• pub use Piece::*;
• pub use Position::*;

Structs

• Argument
  Representation of an argument specification.
• FormatSpec
  Specification for the formatting of an argument in the format string.
• InnerOffset 🔒
• InnerSpan
  Range inside of a Span used for diagnostics when we only have access to relative positions.
• InnerWidthMapping
  The location and before/after width of a character whose width has changed from its source code representation
• ParseError
• Parser
  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
  Enum of alignments which are supported.
• Count
  A count is used for the precision and width parameters of an integer, and can reference either an argument or a literal integer.
• DebugHex
  Enum for the debug hex flags.
• InputStringKind 🔒
  Whether the input string is a literal. If yes, it contains the inner width mappings.
• ParseMode
  The type of format string that we are parsing.
• Piece
  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
  Enum describing where an argument for a format can be located.
• Sign
  Enum for the sign flags.
• Suggestion

Functions

• find_width_map_from_snippet 🔒
  Finds the indices of all characters that have been processed and differ between the actual written code (code snippet) and the InternedString that gets processed in the Parser in order to properly synthesise the intra-string Spans for error diagnostics.
• unescape_string 🔒