Crate ra_ap_hir_expand

hir_expand deals with macro expansion.

Specifically, it implements a concept of MacroFile – a file whose syntax tree originates not from the text of some FileId, but from some macro expansion.

Modules

ast_id_map	AstIdMap allows to create stable IDs for “large” syntax nodes like items and macro calls.
builtin_derive	Builtin derives.
builtin_macro	Builtin macro
db	Defines database & queries for macro expansion.
eager	Eager expansion related utils
hygiene	This modules handles hygiene information.
name	See Name.
proc_macro	Proc Macro Expander stub
quote	A simplified version of quote-crate like quasi quote macro

Macros

name
quote	FIXME: It probably should implement in proc-macro

Structs

ExpandResult
ExpansionInfo	ExpansionInfo mainly describes how to map text range between src and expanded macro
HirFileId	Input to the analyzer is a set of files, where each file is identified by FileId and contains source code. However, another source of source code in Rust are macros: each macro can be thought of as producing a “temporary file”. To assign an id to such a file, we use the id of the macro call that produced the file. So, a HirFileId is either a FileId (source code written by user), or a MacroCallId (source code produced by macro).
InFile	InFile<T> stores a value of T inside a particular file/syntax tree.
MacroCallId	MacroCallId identifies a particular macro invocation, like println!("Hello, {}", world).
MacroCallLoc
MacroDefId
MacroFile

Enums

ExpandError
FragmentKind
MacroCallKind
MacroDefKind
Origin

Functions

to_fragment_kind

Given a MacroCallId, return what FragmentKind it belongs to. FIXME: Not completed

Type Definitions

AstId

AstId points to an AST node in any file.