zerodds-idl-cst

The syntax tree that keeps everything it read.

A lossless concrete syntax tree for OMG IDL 4.2: tokens carry their trivia, and a green/red tree reproduces its input byte for byte — including for a file that fails to parse, because error recovery has to hand back what it could not read.

SyntaxSpans narrows a span to the text it covers. A node's own span includes its leading trivia, which is right for reproducing the file and wrong for pointing a diagnostic at a declaration; the two questions have two answers and both live here.

This crate resolves no names and knows no types. It is the shape of the file, not its meaning; zerodds-idl-lower supplies that.