ParseDir calls ParseFile for the files in the directory specified by path and returns a map of package name -> package AST with all the packages found.

ParseExpr parses a Go expression and returns the corresponding AST node.

ParseFile parses the source code of a single Go source file and returns the corresponding ast.File node.

ParseFiles calls ParseFile for each file in the filenames list and returns a map of package name -> package AST with all the packages found.

report declaration errors.

parsing stops after import declarations.

parsing stops after package clause.

parse comments and add them to AST.

print a trace of parsed productions.

ImportPathToName is the type of the function that's used to find the package name for an imported package path.