documented: #t module: int-parse author: Robert Stockton (rgs@cs.cmu.edu) copyright: see below This code was produced by the Gwydion Project at Carnegie Mellon University. If you are interested in using this code, contact "Scott.Fahlman@cs.cmu.edu" (Internet). //====================================================================== // // Copyright (c) 1994 Carnegie Mellon University // Copyright (c) 1998, 1999, 2000 Gwydion Dylan Maintainers // All rights reserved. // //====================================================================== //====================================================================== // Module int-parse handles parsing of define interface forms in interace // files. It makes no attempt to handle any other part of the Dylan language // at this time, since it will eventually be merged into the native parser for // the Gwydion compiler. // // The actual "source" for this parser is contained in "int-parse.input", // which is an input file for a lisp-based Dylan parser generator. (This is a // logical route to follow for bootstrapping purposes. It would clearly be // useful to re-implement the generator in Dylan at some future date.) // "Int-parse.dylan" is the pure Dylan output of this generator, and should // *not* be considered human readable code. // // The "parse-tree" is a very ad-hoc structure, because it is intended to be // quite ephemeral. The final goal is to add annotations to the "parse-state" // which describe the C header file to be processed and the transformations to // apply to that header file's declarations. // // The external interface to the parser is the function "parse", which has the // following interface: // parse(parse-state, #key defines, undefines) => () // This function processes a single "define interface" form, using the // tokenizer in "parse-state", and annotates the parse state with the // information acquired. // is defined below, and contains both global modifiers such as // "include file" or "object file" and "clauses" which describe the processing // of a single object. // //====================================================================== //---------------------------------------------------------------------- // Simple parser support //---------------------------------------------------------------------- // Designates an "optional" string. // define constant = false-or(); // Undefined values are useful for values that may need to be defaulted. This // is superious do simply filling in the default value at the start, since it // allows us to merge several s before doing the defaulting. // define class (