/**
 * Copyright (c) 2005, Regents of the University of California
 * 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.
 *
 * Neither the name of the University of California, Los Angeles nor the
 * names of its contributors may 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.
 */

package jintgen.isdl.verifier;

import cck.text.Status;
import cck.text.Verbose;
import jintgen.gen.Canonicalizer;
import jintgen.isdl.*;

/**
 * The <code>Verifier</code> class performs some consistency checks on an architecture description
 * such as checking for redeclared instructions, mismatched types, ambiguous encodings, etc.
 *
 * @author Ben L. Titzer
 */
public class Verifier {

    public final ArchDecl arch;
    public final JIGIRErrorReporter ERROR;

    Verbose.Printer printer = Verbose.getVerbosePrinter("jintgen.verifier");

    public Verifier(ArchDecl a) {
        arch = a;
        ERROR = arch.ERROR;
    }

    public void verify() {
        runVerifierPass("Building type environment", new TypeEnvBuilder(arch));
        runVerifierPass("Verifying operand types and addressing modes", new AddrModeVerifier(arch));
        runVerifierPass("Verifying addressing mode sets", new AddrSetVerifier(arch));
        runVerifierPass("Verifying instructions", new InstrVerifier(arch));
        runVerifierPass("Computing encoding sizes", new EncodingVerifier(arch));
        runVerifierPass("Typechecking", new TypeChecker(ERROR, arch));
        canonicalize();
    }

    private void runVerifierPass(String n, VerifierPass p) {
        Status.begin(n);
        p.verify();
        Status.success();
    }

    private void canonicalize() {
        Canonicalizer canon = new Canonicalizer();
        for ( SubroutineDecl d : arch.subroutines ) {
            if ( !d.code.hasBody() ) continue;
            d.code.setStmts(canon.process(d.code.getStmts()));
        }
        for ( InstrDecl d : arch.instructions ) {
            if ( !d.code.hasBody() ) continue;
            d.code.setStmts(canon.process(d.code.getStmts()));
        }
    }
}
