Module swc_common::source_map
source · [−]Expand description
The SourceMap 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
SourceMap and are represented by SourceFiles. Byte positions are stored in
spans and used pervasively in the compiler. They are absolute positions
within the SourceMap, which upon request can be converted to line and column
information, source code snippets, etc.
Modules
Machinery for hygienic macros, inspired by the MTWT[1] paper.
Structs
An archived BytePos
An archived CharPos
An archived DistinctSources
An archived FileLines
An archived LineInfo
An archived Loc
An archived MultiByteChar
An archived MultiSpan
An archived SourceFile
An archived SourceFileAndBytePos
An archived Span
A byte offset. Keep this small (currently 32-bits), as AST contains a lot of them.
The resolver for an archived BytePos
A character offset. Because of multibyte utf8 characters, a byte offset is not equivalent to a character offset. The SourceMap will convert BytePos values to CharPos values as necessary.
The resolver for an archived CharPos
The resolver for an archived DistinctSources
A wrapper that attempts to convert a type to and from UTF-8.
A wrapper that attempts to convert a Url to and from String.
The resolver for an archived FileLines
Used to create a .map file.
The resolver for an archived LineInfo
A source code location used for error reporting
The resolver for an archived Loc
A source code location used as the result of lookup_char_pos_adj
A mark is a unique id associated with a macro expansion.
Identifies an offset of a multi-byte character in a SourceFile
The resolver for an archived MultiByteChar
A collection of spans. Spans have two orthogonal attributes:
The resolver for an archived MultiSpan
A FileLoader that uses std::fs to load real files.
A single source in the SourceMap.
The resolver for an archived SourceFileAndBytePos
The resolver for an archived SourceFile
The interner for spans.
Spans represent a region of code, used for error reporting. Positions in
spans are absolute positions from the beginning of the source_map, not
positions relative to SourceFiles. Methods on the SourceMap can be used
to relate spans back to the original source.
You must be careful if the span crosses more than one file - you will not be
able to use many of the functions on spans in source_map and you cannot
assume that the length of the span = hi - lo; there may be space in the
BytePos range between files.
The resolver for an archived Span
A SyntaxContext represents a chain of macro expansions (represented by marks).
Enums
An archived FileName
An archived NonNarrowChar
An archived SpanLinesError
The resolver for an archived FileName
Identifies an offset of a non-narrow character in a SourceFile
The resolver for an archived NonNarrowChar
The resolver for an archived SpanLinesError
Constants
Dummy span, both position and length are zero, syntax context is zero as well.
Statics
Storage for span hygiene data.