Allow input through a macro invocation (current) and from a separate file (LALRPOP-style) and through a file pointed to by a macro or attr macro (pest-style).
Allow both code generation as a string saved to a file (LALRPOP-style) and procedural macro (current).
Allow input through a macro invocation (current) and from a separate file (LALRPOP-style) and through a file pointed to by a macro or attr macro (pest-style).
Allow both code generation as a string saved to a file (LALRPOP-style) and procedural macro (current).