mirror of
https://github.com/Eaglercraft-TeaVM-Fork/eagler-teavm.git
synced 2024-12-22 16:14:10 -08:00
Adds try/catch support in simple cases
This commit is contained in:
parent
de245613c4
commit
62686878c6
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@ -15,6 +15,7 @@
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*/
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package org.teavm.classlib.java.lang;
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import org.teavm.classlib.java.io.TPrintStream;
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import org.teavm.javascript.ni.Remove;
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import org.teavm.javascript.ni.Rename;
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import org.teavm.javascript.ni.Superclass;
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@ -107,4 +108,13 @@ public class TThrowable extends RuntimeException {
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this.cause = cause;
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return this;
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}
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@Override
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public void printStackTrace() {
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printStackTrace(TSystem.err);
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}
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public void printStackTrace(TPrintStream stream) {
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stream.println(TString.wrap(getClass().getName() + ": " + getMessage()));
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}
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}
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@ -105,4 +105,14 @@ class BlockRefCountVisitor implements StatementVisitor {
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@Override
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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for (Statement part : statement.getProtectedBody()) {
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part.acceptVisitor(this);
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}
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for (Statement part : statement.getHandler()) {
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part.acceptVisitor(this);
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}
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}
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}
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@ -111,4 +111,9 @@ class BreakToContinueReplacer implements StatementVisitor {
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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visitSequence(statement.getProtectedBody());
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visitSequence(statement.getHandler());
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}
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}
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@ -171,7 +171,8 @@ public class Decompiler {
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public RegularMethodNode decompileRegular(MethodHolder method) {
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lastBlockId = 1;
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indexer = new GraphIndexer(ProgramUtils.buildControlFlowGraph(method.getProgram()));
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graph = ProgramUtils.buildControlFlowGraph(method.getProgram());
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indexer = new GraphIndexer(graph);
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graph = indexer.getGraph();
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loopGraph = new LoopGraph(this.graph);
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unflatCode();
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@ -218,6 +219,18 @@ public class Decompiler {
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insn.acceptVisitor(generator);
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}
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block.body.addAll(generator.statements);
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for (TryCatchBlock tryCatch : generator.currentBlock.getTryCatchBlocks()) {
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TryCatchStatement tryCatchStmt = new TryCatchStatement();
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tryCatchStmt.setExceptionType(tryCatch.getExceptionType());
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tryCatchStmt.setExceptionVariable(tryCatch.getExceptionVariable().getIndex());
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tryCatchStmt.getProtectedBody().addAll(block.body);
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block.body.clear();
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block.body.add(tryCatchStmt);
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Statement handlerStmt = generator.generateJumpStatement(tryCatch.getHandler());
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if (handlerStmt != null) {
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tryCatchStmt.getHandler().add(handlerStmt);
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}
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}
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}
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}
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SequentialStatement result = new SequentialStatement();
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@ -548,4 +548,11 @@ class OptimizingVisitor implements StatementVisitor, ExprVisitor {
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public void visit(InitClassStatement statement) {
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resultStmt = statement;
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}
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@Override
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public void visit(TryCatchStatement statement) {
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processSequence(statement.getProtectedBody());
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processSequence(statement.getHandler());
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resultStmt = statement;
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}
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}
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@ -119,4 +119,10 @@ class RedundantLabelEliminator implements StatementVisitor {
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@Override
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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visitSequence(statement.getProtectedBody());
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visitSequence(statement.getHandler());
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}
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}
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@ -109,4 +109,14 @@ class ReferenceCountingVisitor implements StatementVisitor {
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@Override
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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for (Statement part : statement.getProtectedBody()) {
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part.acceptVisitor(this);
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}
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for (Statement part : statement.getHandler()) {
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part.acceptVisitor(this);
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}
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}
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}
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@ -1249,6 +1249,46 @@ public class Renderer implements ExprVisitor, StatementVisitor {
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}
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}
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@Override
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public void visit(TryCatchStatement statement) {
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try {
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writer.append("try").ws().append("{").softNewLine().indent();
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List<TryCatchStatement> sequence = new ArrayList<>();
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sequence.add(statement);
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List<Statement> protectedBody = statement.getProtectedBody();
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while (protectedBody.size() == 1 && protectedBody.get(0) instanceof TryCatchStatement) {
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TryCatchStatement nextStatement = (TryCatchStatement)protectedBody.get(0);
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sequence.add(nextStatement);
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protectedBody = nextStatement.getProtectedBody();
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}
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for (Statement part : protectedBody) {
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part.acceptVisitor(this);
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}
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String var = variableName(statement.getExceptionVariable());
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writer.outdent().append("}").ws().append("catch").ws().append("(").append(var).append(")")
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.ws().append("{").indent().softNewLine();
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for (TryCatchStatement catchClause : sequence) {
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writer.append("if").ws().append("(").append(var).append(" instanceof ")
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.appendClass(catchClause.getExceptionType()).append(")").ws().append("{")
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.indent().softNewLine();
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if (statement.getExceptionVariable() != catchClause.getExceptionVariable()) {
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writer.append(variableName(catchClause.getExceptionVariable())).ws().append("=").ws()
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.append(var).append(";").softNewLine();
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}
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for (Statement part : statement.getHandler()) {
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part.acceptVisitor(this);
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}
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writer.outdent().append("}").ws().append("else ");
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}
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writer.append("{").indent().softNewLine();
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writer.append("throw ").append(var).append(";").softNewLine();
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writer.outdent().append("}").softNewLine();
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writer.outdent().append("}").softNewLine();
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} catch (IOException e) {
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throw new RenderingException("IO error occured", e);
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}
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}
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private Injector getInjector(MethodReference ref) {
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InjectorHolder holder = injectorMap.get(ref);
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if (holder == null) {
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@ -573,7 +573,7 @@ class StatementGenerator implements InstructionVisitor {
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assign(castToInteger(Expr.binary(op, Expr.var(first), Expr.var(second))), result);
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}
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private Statement generateJumpStatement(BasicBlock target) {
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Statement generateJumpStatement(BasicBlock target) {
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if (nextBlock == target) {
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return null;
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}
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@ -215,4 +215,14 @@ class UnusedVariableEliminator implements ExprVisitor, StatementVisitor {
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@Override
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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for (Statement part : statement.getProtectedBody()) {
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part.acceptVisitor(this);
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}
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for (Statement part : statement.getHandler()) {
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part.acceptVisitor(this);
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}
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}
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}
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@ -189,4 +189,15 @@ public class RenamingVisitor implements StatementVisitor, ExprVisitor {
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@Override
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public void visit(InitClassStatement statement) {
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}
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@Override
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public void visit(TryCatchStatement statement) {
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for (Statement part : statement.getProtectedBody()) {
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part.acceptVisitor(this);
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}
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for (Statement part : statement.getHandler()) {
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part.acceptVisitor(this);
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}
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statement.setExceptionVariable(varNames[statement.getExceptionVariable()]);
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}
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}
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@ -45,4 +45,6 @@ public interface StatementVisitor {
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void visit(IncrementStatement statement);
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void visit(InitClassStatement statement);
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void visit(TryCatchStatement statement);
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}
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@ -0,0 +1,59 @@
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/*
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* Copyright 2014 Alexey Andreev.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.teavm.javascript.ast;
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import java.util.ArrayList;
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import java.util.List;
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/**
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*
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* @author Alexey Andreev
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*/
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public class TryCatchStatement extends Statement {
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private List<Statement> protectedBody = new ArrayList<>();
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private List<Statement> handler = new ArrayList<>();
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private String exceptionType;
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private int exceptionVariable;
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public List<Statement> getProtectedBody() {
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return protectedBody;
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}
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public List<Statement> getHandler() {
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return handler;
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}
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public String getExceptionType() {
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return exceptionType;
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}
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public void setExceptionType(String exceptionType) {
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this.exceptionType = exceptionType;
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}
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public int getExceptionVariable() {
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return exceptionVariable;
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}
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public void setExceptionVariable(int exceptionVariable) {
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this.exceptionVariable = exceptionVariable;
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}
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@Override
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public void acceptVisitor(StatementVisitor visitor) {
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visitor.visit(this);
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}
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}
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@ -198,14 +198,15 @@ public class BasicBlock implements BasicBlockReader {
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return tryCatchBlocks.size();
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}
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@Override public void add(int index, TryCatchBlock element) {
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if (!element.protectedBlocks.add(BasicBlock.this)) {
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if (element.protectedBlock == BasicBlock.this) {
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throw new IllegalStateException("This try/catch block is already added to basic block");
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}
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element.protectedBlock = BasicBlock.this;
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tryCatchBlocks.add(index, element);
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}
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@Override public TryCatchBlock remove(int index) {
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TryCatchBlock tryCatch = tryCatchBlocks.remove(index);
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tryCatch.protectedBlocks.remove(BasicBlock.this);
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tryCatch.protectedBlock = null;
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return tryCatch;
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}
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@Override public TryCatchBlock set(int index, TryCatchBlock element) {
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if (oldTryCatch == element) {
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return oldTryCatch;
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}
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if (element.protectedBlocks.contains(BasicBlock.this)) {
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if (element.protectedBlock == BasicBlock.this) {
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throw new IllegalStateException("This try/catch block is already added to basic block");
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}
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oldTryCatch.protectedBlocks.remove(BasicBlock.this);
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element.protectedBlocks.add(BasicBlock.this);
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oldTryCatch.protectedBlock = null;
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element.protectedBlock = BasicBlock.this;
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tryCatchBlocks.set(index, element);
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return oldTryCatch;
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}
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@Override public void clear() {
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for (TryCatchBlock tryCatch : tryCatchBlocks) {
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tryCatch.protectedBlocks.remove(BasicBlock.this);
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tryCatch.protectedBlock = null;
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}
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tryCatchBlocks.clear();
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}
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@ -15,16 +15,12 @@
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*/
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package org.teavm.model;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Set;
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/**
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*
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* @author Alexey Andreev <konsoletyper@gmail.com>
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*/
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public class TryCatchBlock implements TryCatchBlockReader {
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Set<BasicBlock> protectedBlocks = new HashSet<>();
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BasicBlock protectedBlock;
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private BasicBlock handler;
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private String exceptionType;
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private Variable exceptionVariable;
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@ -56,10 +52,8 @@ public class TryCatchBlock implements TryCatchBlockReader {
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this.exceptionVariable = exceptionVariable;
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}
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private Set<BasicBlock> immutableProtectedBLocks = Collections.unmodifiableSet(protectedBlocks);
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@Override
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public Set<BasicBlock> readProtectedBlocks() {
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return immutableProtectedBLocks;
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public BasicBlock getProtectedBlock() {
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return protectedBlock;
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}
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}
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@ -15,14 +15,12 @@
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*/
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package org.teavm.model;
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import java.util.Set;
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/**
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*
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* @author Alexey Andreev <konsoletyper@gmail.com>
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*/
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public interface TryCatchBlockReader {
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Set<? extends BasicBlockReader> readProtectedBlocks();
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BasicBlockReader getProtectedBlock();
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BasicBlockReader getHandler();
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@ -15,10 +15,7 @@
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*/
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package org.teavm.model.util;
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import org.teavm.model.BasicBlock;
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import org.teavm.model.Incoming;
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import org.teavm.model.Phi;
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import org.teavm.model.Program;
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import org.teavm.model.*;
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import org.teavm.model.instructions.*;
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/**
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@ -37,6 +34,9 @@ public abstract class BasicBlockMapper implements InstructionVisitor {
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incoming.setSource(map(incoming.getSource()));
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}
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}
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for (TryCatchBlock tryCatch : block.getTryCatchBlocks()) {
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tryCatch.setHandler(map(tryCatch.getHandler()));
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}
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}
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}
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@ -15,8 +15,6 @@
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*/
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package org.teavm.model.util;
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import java.util.HashMap;
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import java.util.Map;
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import org.teavm.common.Graph;
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import org.teavm.common.GraphBuilder;
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import org.teavm.model.*;
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@ -58,7 +56,6 @@ public class ProgramUtils {
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for (int i = 0; i < program.basicBlockCount(); ++i) {
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copy.createBasicBlock();
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}
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Map<TryCatchBlock, TryCatchBlock> tryCatchCopies = new HashMap<>();
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for (int i = 0; i < program.basicBlockCount(); ++i) {
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BasicBlock block = program.basicBlockAt(i);
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BasicBlock blockCopy = copy.basicBlockAt(i);
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@ -78,13 +75,10 @@ public class ProgramUtils {
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blockCopy.getPhis().add(phiCopy);
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}
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for (TryCatchBlock tryCatch : block.getTryCatchBlocks()) {
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TryCatchBlock tryCatchCopy = tryCatchCopies.get(tryCatch);
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if (tryCatchCopy == null) {
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tryCatchCopy = new TryCatchBlock();
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tryCatchCopy.setExceptionType(tryCatchCopy.getExceptionType());
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TryCatchBlock tryCatchCopy = new TryCatchBlock();
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tryCatchCopy.setExceptionType(tryCatch.getExceptionType());
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tryCatchCopy.setExceptionVariable(copy.variableAt(tryCatch.getExceptionVariable().getIndex()));
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tryCatchCopy.setHandler(copy.basicBlockAt(tryCatch.getHandler().getIndex()));
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tryCatchCopies.put(tryCatch, tryCatchCopy);
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}
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blockCopy.getTryCatchBlocks().add(tryCatchCopy);
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}
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}
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@ -76,16 +76,20 @@ public class RegisterAllocator {
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Map<BasicBlock, BasicBlock> blockMap = new HashMap<>();
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for (Phi phi : program.basicBlockAt(i).getPhis()) {
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for (Incoming incoming : phi.getIncomings()) {
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if (!isExceptionHandler(incoming)) {
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insertCopy(incoming, blockMap);
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}
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}
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}
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for (Phi phi : program.basicBlockAt(i).getPhis()) {
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for (Incoming incoming : phi.getIncomings()) {
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if (!isExceptionHandler(incoming)) {
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insertCopy(incoming, blockMap);
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}
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}
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}
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}
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}
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private void insertCopy(Incoming incoming, Map<BasicBlock, BasicBlock> blockMap) {
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final Phi phi = incoming.getPhi();
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@ -122,6 +126,15 @@ public class RegisterAllocator {
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incoming.setValue(copyInstruction.getReceiver());
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}
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private boolean isExceptionHandler(Incoming incoming) {
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for (TryCatchBlock tryCatch : incoming.getSource().getTryCatchBlocks()) {
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if (tryCatch.getExceptionVariable() == incoming.getValue()) {
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return true;
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}
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}
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return false;
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}
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private void removeRedundantCopies(Program program, List<MutableGraphNode> interferenceGraph,
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DisjointSet congruenceClasses) {
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for (int i = 0; i < program.basicBlockCount(); ++i) {
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@ -187,6 +200,10 @@ public class RegisterAllocator {
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incoming.setValue(program.variableAt(varMap[incoming.getValue().getIndex()]));
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}
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}
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for (TryCatchBlock tryCatch : block.getTryCatchBlocks()) {
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tryCatch.setExceptionVariable(program.variableAt(
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varMap[tryCatch.getExceptionVariable().getIndex()]));
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}
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}
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}
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@ -101,6 +101,10 @@ public class CommonSubexpressionElimination implements MethodOptimization {
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int value = map[incoming.getValue().getIndex()];
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incoming.setValue(program.variableAt(value));
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}
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for (TryCatchBlock tryCatch : block.getTryCatchBlocks()) {
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int var = map[tryCatch.getExceptionVariable().getIndex()];
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tryCatch.setExceptionVariable(program.variableAt(var));
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}
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for (int succ : dom.outgoingEdges(v)) {
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stack[top++] = succ;
|
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}
|
||||
|
|
|
@ -213,10 +213,6 @@ public class ProgramParser {
|
|||
}
|
||||
for (Object obj : method.tryCatchBlocks) {
|
||||
TryCatchBlockNode tryCatchNode = (TryCatchBlockNode)obj;
|
||||
TryCatchBlock tryCatch = new TryCatchBlock();
|
||||
tryCatch.setExceptionType(tryCatchNode.type.replace('/', '.'));
|
||||
tryCatch.setHandler(getBasicBlock(labelIndexes.get(tryCatchNode.handler.getLabel())));
|
||||
tryCatch.setExceptionVariable(getVariable(minLocal + method.maxLocals));
|
||||
int start = labelIndexes.get(tryCatchNode.start.getLabel());
|
||||
int end = labelIndexes.get(tryCatchNode.end.getLabel());
|
||||
getBasicBlock(start);
|
||||
|
@ -224,6 +220,12 @@ public class ProgramParser {
|
|||
for (int i = start; i < end; ++i) {
|
||||
BasicBlock block = basicBlocks.get(i);
|
||||
if (block != null) {
|
||||
TryCatchBlock tryCatch = new TryCatchBlock();
|
||||
if (tryCatchNode.type != null) {
|
||||
tryCatch.setExceptionType(tryCatchNode.type.replace('/', '.'));
|
||||
}
|
||||
tryCatch.setHandler(getBasicBlock(labelIndexes.get(tryCatchNode.handler.getLabel())));
|
||||
tryCatch.setExceptionVariable(getVariable(minLocal + method.maxLocals));
|
||||
block.getTryCatchBlocks().add(tryCatch);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -15,9 +15,10 @@
|
|||
*/
|
||||
package org.teavm.parsing;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
import org.teavm.common.*;
|
||||
import java.util.*;
|
||||
import org.teavm.common.DominatorTree;
|
||||
import org.teavm.common.Graph;
|
||||
import org.teavm.common.GraphUtils;
|
||||
import org.teavm.model.*;
|
||||
import org.teavm.model.instructions.*;
|
||||
import org.teavm.model.util.DefinitionExtractor;
|
||||
|
@ -114,6 +115,17 @@ public class SSATransformer {
|
|||
}
|
||||
}
|
||||
|
||||
List<List<TryCatchBlock>> caughtBlocks = new ArrayList<>();
|
||||
List<List<Phi>> specialPhis = new ArrayList<>();
|
||||
for (int i = 0; i < program.basicBlockCount(); ++i) {
|
||||
caughtBlocks.add(new ArrayList<TryCatchBlock>());
|
||||
specialPhis.add(new ArrayList<Phi>());
|
||||
}
|
||||
for (int i = 0; i < program.basicBlockCount(); ++i) {
|
||||
for (TryCatchBlock tryCatch : program.basicBlockAt(i).getTryCatchBlocks()) {
|
||||
caughtBlocks.get(tryCatch.getHandler().getIndex()).add(tryCatch);
|
||||
}
|
||||
}
|
||||
boolean[] processed = new boolean[program.basicBlockCount()];
|
||||
while (head > 0) {
|
||||
Task task = stack[--head];
|
||||
|
@ -128,12 +140,22 @@ public class SSATransformer {
|
|||
variableMap[phi.getReceiver().getIndex()] = var;
|
||||
phi.setReceiver(var);
|
||||
}
|
||||
if (!caughtBlocks.get(currentBlock.getIndex()).isEmpty()) {
|
||||
Phi phi = new Phi();
|
||||
phi.setReceiver(program.createVariable());
|
||||
for (TryCatchBlock tryCatch : caughtBlocks.get(currentBlock.getIndex())) {
|
||||
variableMap[tryCatch.getExceptionVariable().getIndex()] = phi.getReceiver();
|
||||
tryCatch.setExceptionVariable(program.createVariable());
|
||||
Incoming incoming = new Incoming();
|
||||
incoming.setSource(tryCatch.getProtectedBlock());
|
||||
incoming.setValue(tryCatch.getExceptionVariable());
|
||||
phi.getIncomings().add(incoming);
|
||||
}
|
||||
specialPhis.get(currentBlock.getIndex()).add(phi);
|
||||
}
|
||||
for (Instruction insn : currentBlock.getInstructions()) {
|
||||
insn.acceptVisitor(consumer);
|
||||
}
|
||||
for (TryCatchBlock tryCatch : currentBlock.getTryCatchBlocks()) {
|
||||
define(tryCatch.getExceptionVariable());
|
||||
}
|
||||
int[] successors = domGraph.outgoingEdges(currentBlock.getIndex());
|
||||
for (int i = 0; i < successors.length; ++i) {
|
||||
Task next = new Task();
|
||||
|
@ -157,6 +179,9 @@ public class SSATransformer {
|
|||
}
|
||||
}
|
||||
}
|
||||
for (int i = 0; i < specialPhis.size(); ++i) {
|
||||
program.basicBlockAt(i).getPhis().addAll(specialPhis.get(i));
|
||||
}
|
||||
}
|
||||
|
||||
private void markAssignment(Variable var) {
|
||||
|
|
Loading…
Reference in New Issue
Block a user