Mercurial > hg > graal-jvmci-8
view c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotSignature.java @ 1475:ace6e55373eb
Sync with CRI/C1X changes.
author | Doug Simon <doug.simon@oracle.com> |
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date | Sun, 05 Dec 2010 22:01:07 +0100 |
parents | 9e5e83ca2259 |
children | 79d04223b8a5 |
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/* * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved. * * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product * that is described in this document. In particular, and without limitation, these intellectual property * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or * more additional patents or pending patent applications in the U.S. and in other countries. * * U.S. Government Rights - Commercial software. Government users are subject to the Sun * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its * supplements. * * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the * U.S. and other countries. * * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open * Company, Ltd. */ package com.sun.hotspot.c1x; import java.util.*; import com.sun.cri.ci.*; import com.sun.cri.ri.*; /** * Represents a method signature. * * @author Thomas Wuerthinger, Lukas Stadler */ public class HotSpotSignature implements RiSignature, CompilerObject { private final List<String> arguments = new ArrayList<String>(); private final String returnType; private final String originalString; private RiType[] argumentTypes; private RiType returnTypeCache; public HotSpotSignature(String signature) { assert signature.length() > 0; this.originalString = signature; if (signature.charAt(0) == '(') { int cur = 1; while (cur < signature.length() && signature.charAt(cur) != ')') { int nextCur = parseSignature(signature, cur); arguments.add(signature.substring(cur, nextCur)); cur = nextCur; } cur++; int nextCur = parseSignature(signature, cur); returnType = signature.substring(cur, nextCur); assert nextCur == signature.length(); } else { returnType = null; } } private int parseSignature(String signature, int cur) { char first; do { first = signature.charAt(cur++); } while (first == '['); switch (first) { case 'L': while (signature.charAt(cur) != ';') { cur++; } cur++; break; case 'V': case 'I': case 'B': case 'C': case 'D': case 'F': case 'J': case 'S': case 'Z': break; default: assert false; } return cur; } @Override public int argumentCount(boolean withReceiver) { return arguments.size() + (withReceiver ? 1 : 0); } @Override public CiKind argumentKindAt(int index) { return CiKind.fromTypeString(arguments.get(index)); } @Override public int argumentSlots(boolean withReceiver) { int argSlots = 0; for (int i = 0; i < argumentCount(false); i++) { argSlots += argumentKindAt(i).sizeInSlots(); } return argSlots + (withReceiver ? 1 : 0); } @Override public RiType argumentTypeAt(int index, RiType accessingClass) { if (argumentTypes == null) { argumentTypes = new RiType[arguments.size()]; } RiType type = argumentTypes[index]; if (type == null) { long accessor = 0; if (accessingClass instanceof HotSpotTypeResolved) { accessor = (Long) ((HotSpotTypeResolved) accessingClass).getVmId(); } type = Compiler.getVMEntries().RiSignature_lookupType(arguments.get(index), accessor); argumentTypes[index] = type; } return type; } @Override public String asString() { return originalString; } @Override public CiKind returnKind() { return CiKind.fromTypeString(returnType); } @Override public RiType returnType(RiType accessingClass) { if (returnTypeCache == null) { long accessor = 0; if (accessingClass instanceof HotSpotTypeResolved) { accessor = (Long) ((HotSpotTypeResolved) accessingClass).getVmId(); } returnTypeCache = Compiler.getVMEntries().RiSignature_lookupType(returnType, accessor); } return returnTypeCache; } @Override public String toString() { return "HotSpotSignature<" + originalString + ">"; } }