Examples with A4Reporter edu.mit.csail.sdg.alloy4.A4Reporter used on opensource projects

Example 11 with A4Reporter

use of edu.mit.csail.sdg.alloy4.A4Reporter in project org.alloytools.alloy by AlloyTools.

the class CompModule method resolveParams.

/**
 * Every param in every module will now point to a nonnull Sig.
 */
private static void resolveParams(A4Reporter rep, List<CompModule> modules) throws Err {
    while (true) {
        boolean chg = false;
        Open missing = null;
        String missingName = "";
        for (CompModule mod : modules) for (Open open : mod.opens.values()) {
            CompModule sub = open.realModule;
            if (open.args.size() != sub.params.size())
                throw new ErrorSyntax(open.pos, "You supplied " + open.args.size() + " arguments to the open statement, but the imported module requires " + sub.params.size() + " arguments.");
            int i = 0;
            for (Map.Entry<String, Sig> p : sub.params.entrySet()) {
                Sig old = p.getValue();
                String kn = p.getKey(), vn = open.args.get(i);
                i++;
                Sig vv = mod.getRawSIG(open.pos, vn);
                if (vv == null) {
                    if (old == null) {
                        missing = open;
                        missingName = vn;
                    }
                    continue;
                }
                if (old == vv)
                    continue;
                if (old != null)
                    throw new ErrorFatal(open.pos, "Internal error (module re-instantiated with different arguments)");
                if (vv == NONE)
                    throw new ErrorSyntax(open.pos, "You cannot use \"none\" as an instantiating argument.");
                chg = true;
                p.setValue(vv);
                rep.parse("RESOLVE: " + (sub.path.length() == 0 ? "this/" : sub.path) + "/" + kn + " := " + vv + "\n");
            }
        }
        if (!chg && missing == null)
            return;
        if (!chg)
            throw new ErrorSyntax(missing.pos, "The signature name \"" + missingName + "\" cannot be found.");
    }
}

Example 12 with A4Reporter

use of edu.mit.csail.sdg.alloy4.A4Reporter in project org.alloytools.alloy by AlloyTools.

the class TranslateAlloyToKodkod method execute_command.

/**
 * Based on the specified "options", execute one command and return the
 * resulting A4Solution object.
 *
 * @param rep - if nonnull, we'll send compilation diagnostic messages to it
 * @param sigs - the list of sigs; this list must be complete
 * @param cmd - the Command to execute
 * @param opt - the set of options guiding the execution of the command
 * @return null if the user chose "save to FILE" as the SAT solver, and nonnull
 *         if the solver finishes the entire solving and is either satisfiable
 *         or unsatisfiable.
 *         <p>
 *         If the return value X is satisfiable, you can call X.next() to get
 *         the next satisfying solution X2; and you can call X2.next() to get
 *         the next satisfying solution X3... until you get an unsatisfying
 *         solution.
 */
public static A4Solution execute_command(A4Reporter rep, Iterable<Sig> sigs, Command cmd, A4Options opt) throws Err {
    if (rep == null)
        rep = A4Reporter.NOP;
    TranslateAlloyToKodkod tr = null;
    try {
        if (cmd.parent != null || !cmd.getGrowableSigs().isEmpty())
            return execute_greedyCommand(rep, sigs, cmd, opt);
        tr = new TranslateAlloyToKodkod(rep, opt, sigs, cmd);
        tr.makeFacts(cmd.formula);
        return tr.frame.solve(rep, cmd, new Simplifier(), false);
    } catch (UnsatisfiedLinkError ex) {
        throw new ErrorFatal("The required JNI library cannot be found: " + ex.toString().trim(), ex);
    } catch (CapacityExceededException ex) {
        throw rethrow(ex);
    } catch (HigherOrderDeclException ex) {
        Pos p = tr != null ? tr.frame.kv2typepos(ex.decl().variable()).b : Pos.UNKNOWN;
        throw new ErrorType(p, "Analysis cannot be performed since it requires higher-order quantification that could not be skolemized.");
    } catch (Throwable ex) {
        if (ex instanceof Err)
            throw (Err) ex;
        else
            throw new ErrorFatal("Unknown exception occurred: " + ex, ex);
    }
}

Example 13 with A4Reporter

use of edu.mit.csail.sdg.alloy4.A4Reporter in project org.alloytools.alloy by AlloyTools.

the class TranslateAlloyToKodkod method execute_greedyCommand.

private static A4Solution execute_greedyCommand(A4Reporter rep, Iterable<Sig> sigs, Command usercommand, A4Options opt) throws Exception {
    // FIXTHIS: if the next command has a "smaller scope" than the last
    // command, we would get a Kodkod exception...
    // FIXTHIS: if the solver is "toCNF" or "toKodkod" then this method will
    // throw an Exception...
    // FIXTHIS: does solution enumeration still work when we're doing a
    // greedy solve?
    TranslateAlloyToKodkod tr = null;
    try {
        long start = System.currentTimeMillis();
        GreedySimulator sim = new GreedySimulator();
        sim.allSigs = sigs;
        sim.partial = null;
        A4Reporter rep2 = new A4Reporter(rep) {

            private boolean first = true;

            @Override
            public void translate(String solver, int bitwidth, int maxseq, int skolemDepth, int symmetry) {
                if (first)
                    super.translate(solver, bitwidth, maxseq, skolemDepth, symmetry);
                first = false;
            }

            @Override
            public void resultSAT(Object command, long solvingTime, Object solution) {
            }

            @Override
            public void resultUNSAT(Object command, long solvingTime, Object solution) {
            }
        };
        // Form the list of commands
        List<Command> commands = new ArrayList<Command>();
        while (usercommand != null) {
            commands.add(usercommand);
            usercommand = usercommand.parent;
        }
        // For each command...
        A4Solution sol = null;
        for (int i = commands.size() - 1; i >= 0; i--) {
            Command cmd = commands.get(i);
            sim.growableSigs = cmd.getGrowableSigs();
            while (cmd != null) {
                rep.debug(cmd.scope.toString());
                usercommand = cmd;
                tr = new TranslateAlloyToKodkod(rep2, opt, sigs, cmd);
                tr.makeFacts(cmd.formula);
                sim.totalOrderPredicates = tr.totalOrderPredicates;
                sol = tr.frame.solve(rep2, cmd, sim.partial == null || cmd.check ? new Simplifier() : sim, false);
                if (!sol.satisfiable() && !cmd.check) {
                    start = System.currentTimeMillis() - start;
                    if (sim.partial == null) {
                        rep.resultUNSAT(cmd, start, sol);
                        return sol;
                    } else {
                        rep.resultSAT(cmd, start, sim.partial);
                        return sim.partial;
                    }
                }
                if (sol.satisfiable() && cmd.check) {
                    start = System.currentTimeMillis() - start;
                    rep.resultSAT(cmd, start, sol);
                    return sol;
                }
                sim.partial = sol;
                if (sim.growableSigs.isEmpty())
                    break;
                for (Sig s : sim.growableSigs) {
                    CommandScope sc = cmd.getScope(s);
                    if (sc.increment > sc.endingScope - sc.startingScope) {
                        cmd = null;
                        break;
                    }
                    cmd = cmd.change(s, sc.isExact, sc.startingScope + sc.increment, sc.endingScope, sc.increment);
                }
            }
        }
        if (sol.satisfiable())
            rep.resultSAT(usercommand, System.currentTimeMillis() - start, sol);
        else
            rep.resultUNSAT(usercommand, System.currentTimeMillis() - start, sol);
        return sol;
    } catch (CapacityExceededException ex) {
        throw rethrow(ex);
    } catch (HigherOrderDeclException ex) {
        Pos p = tr != null ? tr.frame.kv2typepos(ex.decl().variable()).b : Pos.UNKNOWN;
        throw new ErrorType(p, "Analysis cannot be performed since it requires higher-order quantification that could not be skolemized.");
    }
}

Example 14 with A4Reporter

use of edu.mit.csail.sdg.alloy4.A4Reporter in project org.alloytools.alloy by AlloyTools.

the class CompUtil method parseEverything_fromFile.

// =============================================================================================================//
/**
 * Read everything from "file" and parse it; if it mentions submodules, open
 * them and parse them too.
 *
 * @param rep - if nonnull, we will report compilation progress messages to it
 * @param loaded - a cache of files that have been pre-fetched (can be null if
 *            there were no prefetching)
 * @param filename - the main module we are parsing
 * @return the root Module which contains pointers to all submodules
 * @throws Err if an error occurred
 *             <p>
 *             And if loaded!=null, it will contain all the files needed for
 *             this parse, and furthermore, other entries will be deleted.
 */
public static CompModule parseEverything_fromFile(A4Reporter rep, Map<String, String> loaded, String filename) throws Err {
    try {
        filename = Util.canon(filename);
        Set<String> thispath = new LinkedHashSet<String>();
        if (loaded == null)
            loaded = new LinkedHashMap<String, String>();
        Map<String, String> fc = new LinkedHashMap<String, String>(loaded);
        loaded.clear();
        List<Object> seenDollar = new ArrayList<Object>();
        CompModule root = parseRecursively(seenDollar, loaded, fc, new Pos(filename, 1, 1), filename, null, "", thispath, 1);
        root.seenDollar = seenDollar.size() > 0;
        return CompModule.resolveAll(rep == null ? A4Reporter.NOP : rep, root);
    } catch (FileNotFoundException ex) {
        throw new ErrorSyntax("File cannot be found.\n" + ex.getMessage(), ex);
    } catch (IOException ex) {
        throw new ErrorFatal("IOException occurred: " + ex.getMessage(), ex);
    } catch (Throwable ex) {
        if (ex instanceof Err)
            throw (Err) ex;
        else
            throw new ErrorFatal("Unknown exception occurred: " + ex, ex);
    }
}

Example 15 with A4Reporter

use of edu.mit.csail.sdg.alloy4.A4Reporter in project org.alloytools.alloy by AlloyTools.

the class AlloyTest method main.

public static void main(String[] args) throws Exception {
    A4Reporter rep = new A4Reporter();
    Module world = CompUtil.parseEverything_fromFile(rep, null, "/home/aleks/mvc.als");
    A4Options options = new A4Options();
    options.solver = A4Options.SatSolver.SAT4J;
    options.skolemDepth = 1;
    for (Command command : world.getAllCommands()) {
        A4Solution ans = null;
        try {
            ans = TranslateAlloyToKodkod.execute_commandFromBook(rep, world.getAllReachableSigs(), command, options);
            System.out.println(ans);
        } catch (Err ex) {
            Logger.getLogger(AlloyTest.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}