Crate syntax

The Rust parser and macro expander.

Note

This API is completely unstable and subject to change.

Re-exports

pub use errors;

Modules

ast
attr	Functions dealing with attributes and meta items
config
diagnostics
early_buffered_lints	Allows the buffering of lints for later.
edition
entry
error_codes
ext
feature_gate	Feature gating
json	A JSON emitter for errors.
mut_visit	A MutVisitor represents an AST modification; it accepts an AST piece and and mutates it in place. So, for instance, macro expansion is a MutVisitor that walks over an AST and modifies it.
parse	The main parser interface.
print
ptr	The AST pointer.
show_span	Span debugger
source_map	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.
symbol	An "interner" is a data structure that associates values with usize tags and allows bidirectional lookup; i.e., given a value, one can easily find the type, and vice versa.
tokenstream	Token Streams
util
visit	AST walker. Each overridden visit method has full control over what happens with its node, it can do its own traversal of the node's children, call visit::walk_* to apply the default traversal algorithm, or prevent deeper traversal by doing nothing.

Macros

help
maybe_recover_from_interpolated_ty_qpath	If the next tokens are ill-formed $ty:: recover them as <$ty>::.
maybe_whole	As maybe_whole_expr, but for things other than expressions
panictry
register_diagnostic
register_diagnostics
register_long_diagnostics
span_err
span_err_or_warn
span_fatal
span_help
span_note
span_warn
stringify_error_code
struct_err
struct_span_err
struct_span_err_or_warn
struct_span_fatal
struct_span_warn
type_error_struct
unwrap_or
walk_list

Structs

Globals
ThinVec	A vector type optimized for cases where this size is usually 0 (cf. SmallVector). The Option<Box<..>> wrapping allows us to represent a zero sized vector with None, which uses only a single (null) pointer.

Statics

GLOBALS

Functions

with_default_globals
with_globals