Module syntax::codemap
The CodeMap tracks all the source code used within a single crate, mapping
from integer byte positions to the original source code location. Each bit of
source parsed during crate parsing (typically files, in-memory strings, or
various bits of macro expansion) cover a continuous range of bytes in the
CodeMap and are represented by FileMaps. Byte positions are stored in spans
and used pervasively in the compiler. They are absolute positions within the
CodeMap, which upon request can be converted to line and column information,
source code snippets, etc.
Structs
| BytePos | A byte offset. Keep this small (currently 32-bits), as AST contains a lot of them. |
| CharPos | A character offset. Because of multibyte utf8 characters, a byte offset is not equivalent to a character offset. The CodeMap will convert BytePos values to CharPos values as necessary. |
| CodeMap | |
| ExpnInfo | Extra information for tracking macro expansion of spans |
| FileLines | |
| FileMap | A single source in the CodeMap |
| FileMapAndBytePos | |
| FileMapAndLine | |
| Loc | A source code location used for error reporting |
| LocWithOpt | A source code location used as the result of lookup_char_pos_adj |
| MultiByteChar | Identifies an offset of a multi-byte character in a FileMap |
| NameAndSpan | |
| Span | Spans represent a region of code, used for error reporting. Positions in spans are absolute positions from the beginning of the codemap, not positions relative to FileMaps. Methods on the CodeMap can be used to relate spans back to the original source. |
| Spanned |
Enums
| MacroFormat | The syntax with which a macro was invoked. |
Statics
pub static DUMMY_SP: Span = Span { lo: BytePos(0), hi: BytePos(0), expn_info: None } |
Traits
| Pos |
Functions
| dummy_spanned | |
| mk_sp | |
| respan | |
| spanned |
Type Definitions
| FileName |