Crate swc_common

Re-exports

pub use self::errors::SourceMapper;

pub use self::errors::SourceMapperDyn;

Modules

comments
errors
hygiene	Machinery for hygienic macros, inspired by the MTWT[1] paper.
input
macros
serializer
util

Macros

add_bitflags	rustfmt-friendly version of bitblags!.
impl_stable_hash_via_hash
make_impl_block	Create a impl block with some bitflags.
rustc_erase_owner
value_of_bitflag

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 SourceMap will convert BytePos values to CharPos values as necessary.
ExpnInfo	Extra information for tracking spans of macro and syntax sugar expansion
FileLines
FilePathMapping
Globals
Loc	A source code location used for error reporting
LocWithOpt	A source code location used as the result of lookup_char_pos_adj
Mark	A mark is a unique id associated with a macro expansion.
MultiSpan	A collection of spans. Spans have two orthogonal attributes:
SourceFile	A single source in the SourceMap.
SourceFileAndBytePos
SourceFileAndLine
SourceMap
Span	A compressed span. Contains either fields of SpanData inline if they are small, or index into span interner. The primary goal of Span is to be as small as possible and fit into other structures (that's why it uses packed as well). Decoding speed is the second priority. See SpanData for the info on span fields in decoded representation.
SpanData	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.
SyntaxContext	A SyntaxContext represents a chain of macro expansions (represented by marks).

Enums

FileName	Differentiates between real files and common virtual files.
SpanLinesError
SpanSnippetError

Constants

DUMMY_SP	Dummy span, both position and length are zero, syntax context is zero as well. This span is kept inline and encoded with format 0.
NO_EXPANSION

Statics

CM	SourceMap used while serializing Span.
GLOBALS

Traits

AstNode	A trait for ast nodes.
FileLoader	An abstraction over the fs operations used by the Parser.
Spanned	Derive

Attribute Macros

ast_node

Alias for #[derive(Spanned, Fold, Clone, Debug, PartialEq)] for a struct and #[derive(Spanned, Fold, Clone, Debug, PartialEq, FromVariant)] for an enum.

Derive Macros

DeserializeEnum
Fold	Implements FoldWith<F> and VisitWith<F>.
FromVariant
Spanned