Module syntax::ext::base[−][src]

Re-exports

pub use self::SyntaxExtension::*;

DummyResolver
DummyResult	Fill-in macro expansion result, to allow compilation to continue after hitting errors.
ExpansionData
ExtCtxt	One of these is made during expansion and incrementally updated as we go; when a macro expansion occurs, the resulting nodes have the `backtrace() -> expn_info` of their expansion context stored into their span.
MacEager	`MacResult` implementation for the common case where you've already built each form of AST that you might return.
ModuleData

Annotatable
Determinacy
MacroKind	Represents different kinds of macro invocations that can be resolved.
SyntaxExtension	An enum representing the different kinds of syntax extensions.

AttrProcMacro
IdentMacroExpander
MacResult	The result of a macro expansion. The return values of the various methods are spliced into the AST at the callsite of the macro.
MultiItemDecorator
MultiItemModifier
ProcMacro
Resolver
TTMacroExpander	Represents a thing that maps token trees to Macro Results

check_zero_tts	Non-fatally assert that `tts` is empty. Note that this function returns even when `tts` is non-empty, macros that need to stop compilation should call `cx.parse_sess.span_diagnostic.abort_if_errors()` (this should be done as rarely as possible).
expr_to_spanned_string	Extract a string literal from the macro expanded version of `expr`, emitting `err_msg` if `expr` is not a string literal. This does not stop compilation on error, merely emits a non-fatal error and returns None.
expr_to_string
get_exprs_from_tts	Extract comma-separated expressions from `tts`. If there is a parsing error, emit a non-fatal error and return None.
get_single_str_from_tts	Interpreting `tts` as a comma-separated sequence of expressions, expect exactly one string literal, or emit an error and return None.