Synmap

NOTE: This crate currently depends on cpp_syn rather than syn, as it requires the Span features which have not been landed in syn yet for the majority of its features.

This crate provides a SourceMap type which can be used to parse an entire crate and generate a complete AST. It also updates the spans in the parsed AST to be relative to the SourceMap rather than the bytes in the input file.

With this information, the SourceMap provides methods to map spans to source filenames (filename), source text (source_text) and line/column numbers (locinfo).