On Sat, Feb 28, 2015 at 10:22:55AM -0500, Stefan Seefeld wrote: > Hello, > > I would like to write a tool / library that allows me to > (programmatically) edit .dts files, with the ability to regenerate the > source files, preserving the original formatting (including comments and > other non-semantic content). > > To that end I need a formal definition of the DTS grammar. While I have > found the dtc tool, all its source files (in particular the dtc-lexer.l > and dtc-parser.y files) are released under GPL, so it isn't entirely > clear whether I may use the grammar encoded in those and transcribe that > into my own (I'm writing my tool in Java, most likely using the JavaCC > parser generator tool). > > So, is there another place where the grammar of Device Tree source files > is formally defined in ways that allows tools developers to use that ? > Any help and advice would be highly appreciated. I'm not aware of any other presentation of the dts grammar than in the source files. IANAL, but fwiw, I wouldn't consider transcribing the grammar rules (without the semantic actions) into some other form to be a derived work triggering the GPL. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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