Crate syntax[−][src]

The Rust parser and macro expander.

Note

This API is completely unstable and subject to change.

pub extern crate rustc_errors as errors;

ast
attr
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.
config
diagnostic_list
diagnostics
edition
entry
ext
feature_gate	Feature gating
fold	A Folder represents an AST->AST fold; it accepts an AST piece, and returns a piece of the same type. So, for instance, macro expansion is a Folder that walks over an AST and produces another AST.
json	A JSON emitter for errors.
parse	The main parser interface
print
ptr	The AST pointer
show_span	Span debugger
std_inject
str
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.
syntax
test
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.