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117 lines
3.5 KiB
117 lines
3.5 KiB
/*
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* CodeAnalyzer (c) 1998 Jochen Hoenicke
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*
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* You may distribute under the terms of the GNU General Public License.
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*
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* IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
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* INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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* THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE
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* HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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* BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
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* SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* $Id$
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*/
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package jode;
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import sun.tools.java.*;
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import java.io.*;
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public class CodeAnalyzer implements Analyzer, Constants {
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BinaryCode bincode;
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MethodInstructionHeader methodHeader;
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MethodAnalyzer method;
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public JodeEnvironment env;
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/**
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* Get the method.
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* @return The method to which this code belongs.
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*/
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public MethodAnalyzer getMethod() {return method;}
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void readCode()
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throws ClassFormatError
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{
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byte[] code = bincode.getCode();
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InstructionHeader[] instr = new InstructionHeader[code.length];
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int returnCount;
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try {
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DataInputStream stream =
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new DataInputStream(new ByteArrayInputStream(code));
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for (int addr = 0; addr < code.length; ) {
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instr[addr] = Opcodes.readOpcode(addr, stream, this);
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addr = instr[addr].getNextAddr();
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}
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} catch (IOException ex) {
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throw new ClassFormatError(ex.toString());
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}
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BinaryExceptionHandler[] handlers = bincode.getExceptionHandlers();
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methodHeader = new MethodInstructionHeader(env, instr, handlers);
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}
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/*
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tryAddrs.put(new Integer(handler.startPC), handler);
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references[handler.startPC]++;
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catchAddrs.put(new Integer(handler.handlerPC), handler);
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references[handler.handlerPC]++;
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*/
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public void dumpSource(TabbedPrintWriter writer)
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throws java.io.IOException
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{
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methodHeader.dumpSource(writer);
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}
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public CodeAnalyzer(MethodAnalyzer ma, BinaryCode bc, JodeEnvironment e)
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throws ClassFormatError
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{
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method = ma;
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env = e;
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bincode = bc;
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readCode();
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}
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static Transformation[] exprTrafos = {
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new RemoveNop(),
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new CombineCatchLocal(),
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new CreateExpression(),
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new CreatePostIncExpression(),
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new CreateAssignExpression(),
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new CreateNewConstructor(),
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new CombineIfGotoExpressions(),
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new CreateIfThenElseOperator(),
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new CreateConstantArray()
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};
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static Transformation[] simplifyTrafos = { new SimplifyExpression() };
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static Transformation[] blockTrafos = {
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new CreateDoWhileStatements(),
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new CreateTryCatchStatements(),
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new CreateIfStatements(),
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new CreateBreakStatement(),
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new CreateWhileStatements(),
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new CreateSwitchStatements()
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};
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public void analyze()
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{
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methodHeader.doTransformations(exprTrafos);
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methodHeader.doTransformations(simplifyTrafos);
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methodHeader.doTransformations(blockTrafos);
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}
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public String getTypeString(Type type) {
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return env.getTypeString(type);
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}
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public ClassDefinition getClassDefinition() {
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return env.getClassDefinition();
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}
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}
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