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Add support for -boot flag, which allows in-tree execution of Ur/Web The boot flag rewrites most hardcoded paths to point to the build directory, and also forces static compilation. This is convenient for developing Ur/Web, or if you cannot 'sudo make install' Ur/Web. The following changes were made: * Header files were moved to include/urweb instead of include; this lets FFI users point their C_INCLUDE_PATH at this directory at write <urweb/urweb.h>. For internal Ur/Web executables, we simply pass -I$PATH/include/urweb as normal. * Differentiate between LIB and SRCLIB; SRCLIB is Ur and JavaScript source files, while LIB is compiled products from libtool. For in-tree compilation these live in different places. * No longer reference Config for paths; instead use Settings; these settings can be changed dynamically by Compiler.enableBoot () (TODO: add a disableBoot function.) * config.h is now generated directly in include/urweb/config.h, for consistency's sake (especially since it gets installed along with the rest of the headers!) * All of the autotools build products got updated. * The linkStatic field in protocols now only contains the name of the build product, and not the absolute path. Future users have to be careful not to reference the Settings files to early, lest they get an old version (this was the source of two bugs during development of this patch.)
author Edward Z. Yang <ezyang@mit.edu>
date Wed, 02 May 2012 17:17:57 -0400
parents b4480a56cab7
children e15234fbb163
line wrap: on
line source
(* Copyright (c) 2008-2010, Adam Chlipala
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - The names of contributors may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *)

(* Remove unused definitions from a file *)

structure Shake :> SHAKE = struct

val sliceDb = ref false

open Core

structure U = CoreUtil

structure IS = IntBinarySet
structure IM = IntBinaryMap

type free = {
     con : IS.set,
     exp : IS.set
}

val dummyt = (TRecord (CRecord ((KType, ErrorMsg.dummySpan), []), ErrorMsg.dummySpan), ErrorMsg.dummySpan)
val dummye = (EPrim (Prim.String ""), ErrorMsg.dummySpan)

fun tupleC cs = (CTuple cs, ErrorMsg.dummySpan)
fun tupleE es = (ERecord (map (fn e => (dummyt, e, dummyt)) es), ErrorMsg.dummySpan)

fun shake file =
    let
        val usedVarsC = U.Con.fold {kind = fn (_, st) => st,
                                    con = fn (c, cs) =>
                                             case c of
                                                 CNamed n => IS.add (cs, n)
                                               | _ => cs}

        val usedVars = U.Exp.fold {kind = fn (_, st) => st,
                                   con = fn (c, st as (es, cs)) =>
                                            case c of
                                                CNamed n => (es, IS.add (cs, n))
                                              | _ => st,
                                   exp = fn (e, st as (es, cs)) =>
                                            case e of
                                                ENamed n => (IS.add (es, n), cs)
                                              | _ => st}

        val (usedE, usedC) =
            List.foldl
                (fn ((DExport (_, n, _), _), st as (usedE, usedC)) =>
                    if !sliceDb then
                        st
                    else
                        (IS.add (usedE, n), usedC)
                  | ((DTable (_, _, c, _, pe, pc, ce, cc), _), (usedE, usedC)) =>
                    let
                        val usedC = usedVarsC usedC c
                        val usedC = usedVarsC usedC pc
                        val usedC = usedVarsC usedC cc

                        val (usedE, usedC) = usedVars (usedE, usedC) pe
                        val (usedE, usedC) = usedVars (usedE, usedC) ce
                    in
                        (usedE, usedC)
                    end
                  | ((DView (_, _, _, e, c), _), (usedE, usedC)) =>
                    let
                        val usedC = usedVarsC usedC c
                    in
                        usedVars (usedE, usedC) e
                    end
                  | ((DTask (e1, e2), _), st) =>
                    if !sliceDb then
                        st
                    else
                        usedVars (usedVars st e1) e2
                  | ((DPolicy e1, _), st) =>
                    if !sliceDb then
                        st
                    else
                        usedVars st e1
                  | ((DOnError n, _), st as (usedE, usedC)) =>
                    if !sliceDb then
                        st
                    else
                        (IS.add (usedE, n), usedC)
                  | (_, acc) => acc) (IS.empty, IS.empty) file

        val (cdef, edef) = foldl (fn ((DCon (_, n, _, c), _), (cdef, edef)) => (IM.insert (cdef, n, [c]), edef)
                                   | ((DDatatype dts, _), (cdef, edef)) =>
                                     (foldl (fn ((_, n, _, xncs), cdef) =>
                                                IM.insert (cdef, n, List.mapPartial #3 xncs)) cdef dts, edef)
                                   | ((DVal (_, n, t, e, _), _), (cdef, edef)) => (cdef, IM.insert (edef, n, ([], t, e)))
                                   | ((DValRec vis, _), (cdef, edef)) =>
                                     let
                                         val all_ns = map (fn (_, n, _, _, _) => n) vis
                                     in
                                         (cdef, foldl (fn ((_, n, t, e, _), edef) =>
                                                          IM.insert (edef, n, (all_ns, t, e))) edef vis)
                                     end
                                   | ((DExport _, _), acc) => acc
                                   | ((DTable (_, n, c, _, e1, c1, e2, c2), _), (cdef, edef)) =>
                                     (cdef, IM.insert (edef, n, ([], tupleC [c, c1, c2], tupleE [e1, e2])))
                                   | ((DSequence (_, n, _), _), (cdef, edef)) =>
                                     (cdef, IM.insert (edef, n, ([], dummyt, dummye)))
                                   | ((DView (_, n, _, _, c), _), (cdef, edef)) =>
                                     (cdef, IM.insert (edef, n, ([], c, dummye)))
                                   | ((DDatabase _, _), acc) => acc
                                   | ((DCookie (_, n, c, _), _), (cdef, edef)) =>
                                     (cdef, IM.insert (edef, n, ([], c, dummye)))
                                   | ((DStyle (_, n, _), _), (cdef, edef)) =>
                                     (cdef, IM.insert (edef, n, ([], dummyt, dummye)))
                                   | ((DTask _, _), acc) => acc
                                   | ((DPolicy _, _), acc) => acc
                                   | ((DOnError _, _), acc) => acc)
                                 (IM.empty, IM.empty) file

        fun kind (_, s) = s

        fun con (c, s) =
            case c of
                CNamed n =>
                if IS.member (#con s, n) then
                    s
                else
                    let
                        val s' = {con = IS.add (#con s, n),
                                  exp = #exp s}
                    in
                        case IM.find (cdef, n) of
                            NONE => s'
                          | SOME cs => foldl (fn (c, s') => shakeCon s' c) s' cs
                    end
              | _ => s

        and shakeCon s = U.Con.fold {kind = kind, con = con} s

        (*val () = print "=====\nSHAKE\n=====\n"
        val current = ref 0*)

        fun exp (e, s) =
            let
                fun check n =
                    if IS.member (#exp s, n) then
                        s
                    else
                        let
                            val s' = {exp = IS.add (#exp s, n),
                                      con = #con s}
                        in
                            (*print ("Need " ^ Int.toString n ^ " <-- " ^ Int.toString (!current) ^ "\n");*)
                            case IM.find (edef, n) of
                                NONE => s'
                              | SOME (ns, t, e) =>
                                let
                                    (*val old = !current
                                    val () = current := n*)
                                    val s' = shakeExp (shakeCon s' t) e
                                in
                                    (*current := old;*)
                                    foldl (fn (n, s') => exp (ENamed n, s')) s' ns
                                end
                        end
            in
                case e of
                    ENamed n => check n
                  | EServerCall (n, _, _) => check n
                  | _ => s
            end

        and shakeExp s = U.Exp.fold {kind = kind, con = con, exp = exp} s

        val s = {con = usedC, exp = usedE}

        val s = IS.foldl (fn (n, s) =>
                             case IM.find (edef, n) of
                                 NONE => raise Fail "Shake: Couldn't find 'val'"
                               | SOME (ns, t, e) =>
                                 let
                                     (*val () = current := n*)
                                     val s = shakeExp (shakeCon s t) e
                                 in
                                     foldl (fn (n, s) => exp (ENamed n, s)) s ns
                                 end) s usedE

        val s = IS.foldl (fn (n, s) =>
                             case IM.find (cdef, n) of
                                 NONE => raise Fail ("Shake: Couldn't find 'con' " ^ Int.toString n)
                               | SOME cs => foldl (fn (c, s) => shakeCon s c) s cs) s usedC
    in
        List.filter (fn (DCon (_, n, _, _), _) => IS.member (#con s, n)
                      | (DDatatype dts, _) => List.exists (fn (_, n, _, _) => IS.member (#con s, n)) dts
                      | (DVal (_, n, _, _, _), _) => IS.member (#exp s, n)
                      | (DValRec vis, _) => List.exists (fn (_, n, _, _, _) => IS.member (#exp s, n)) vis
                      | (DExport _, _) => not (!sliceDb)
                      | (DView _, _) => true
                      | (DSequence _, _) => true
                      | (DTable _, _) => true
                      | (DDatabase _, _) => not (!sliceDb)
                      | (DCookie _, _) => not (!sliceDb)
                      | (DStyle _, _) => not (!sliceDb)
                      | (DTask _, _) => not (!sliceDb)
                      | (DPolicy _, _) => not (!sliceDb)
                      | (DOnError _, _) => not (!sliceDb)) file
    end

end