fix: improve errors handling

jadx-core/src/main/java/jadx/core/codegen/ClassGen.java

@@ -329,10 +329,10 @@ public class ClassGen {
 		}
 	}
 
-	private void insertDecompilationProblems(CodeWriter code, AttrNode node) {
+	public void insertDecompilationProblems(CodeWriter code, AttrNode node) {
 		List<JadxError> errors = node.getAll(AType.JADX_ERROR);
 		if (!errors.isEmpty()) {
-			errors.stream().sorted().forEach(err -> {
+			errors.stream().distinct().sorted().forEach(err -> {
 				code.startLine("/*  JADX ERROR: ").add(err.getError());
 				Throwable cause = err.getCause();
 				if (cause != null) {

jadx-core/src/main/java/jadx/core/codegen/MethodGen.java

@@ -30,6 +30,7 @@ import jadx.core.utils.InsnUtils;
 import jadx.core.utils.Utils;
 import jadx.core.utils.exceptions.CodegenException;
 import jadx.core.utils.exceptions.DecodeException;
+import jadx.core.utils.exceptions.JadxOverflowException;
 
 public class MethodGen {
 	private static final Logger LOG = LoggerFactory.getLogger(MethodGen.class);
@@ -197,8 +198,18 @@ public class MethodGen {
 					.add(mth.getMethodInfo().getReturnType().toString())
 					.add("\");");
 		} else {
+			try {
 				RegionGen regionGen = new RegionGen(this);
 				regionGen.makeRegion(code, mth.getRegion());
+			} catch (StackOverflowError | BootstrapMethodError e) {
+				mth.addError("Method code generation error", new JadxOverflowException("StackOverflow"));
+				classGen.insertDecompilationProblems(code, mth);
+				addInstructions(code);
+			} catch (Exception e) {
+				mth.addError("Method code generation error", e);
+				classGen.insertDecompilationProblems(code, mth);
+				addInstructions(code);
+			}
 		}
 	}
 

jadx-core/src/main/java/jadx/core/dex/attributes/nodes/JadxError.java

 package jadx.core.dex.attributes.nodes;
 
+import java.util.Objects;
+
+import org.jetbrains.annotations.NotNull;
+
 import jadx.core.utils.Utils;
 
-public class JadxError {
+public class JadxError implements Comparable<JadxError> {
 
 	private final String error;
 	private final Throwable cause;
 
-	public JadxError(Throwable cause) {
-		this(null, cause);
-	}
-
 	public JadxError(String error, Throwable cause) {
-		this.error = error;
+		this.error = Objects.requireNonNull(error);
 		this.cause = cause;
 	}
 
@@ -25,6 +25,28 @@ public class JadxError {
 	}
 
 	@Override
+	public int compareTo(@NotNull JadxError o) {
+		return this.error.compareTo(o.getError());
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) {
+			return true;
+		}
+		if (o == null || getClass() != o.getClass()) {
+			return false;
+		}
+		JadxError other = (JadxError) o;
+		return error.equals(other.error);
+	}
+
+	@Override
+	public int hashCode() {
+		return error.hashCode();
+	}
+
+	@Override
 	public String toString() {
 		StringBuilder str = new StringBuilder();
 		str.append("JadxError: ");

jadx-core/src/main/java/jadx/core/dex/nodes/MethodNode.java

@@ -659,7 +659,7 @@ public class MethodNode extends LineAttrNode implements ILoadable, ICodeNode {
 		LOG.info("{} in {}", commentStr, this);
 	}
 
-	public void addError(String errStr, Exception e) {
+	public void addError(String errStr, Throwable e) {
 		ErrorsCounter.methodError(this, errStr, e);
 	}
 
@@ -667,6 +667,20 @@ public class MethodNode extends LineAttrNode implements ILoadable, ICodeNode {
 		return mthInfo;
 	}
 
+	/**
+	 * Stat method.
+	 * Calculate instructions count as a measure of method size
+	 */
+	public long countInsns() {
+		if (instructions != null) {
+			return instructions.length;
+		}
+		if (blocks != null) {
+			return blocks.stream().mapToLong(block -> block.getInstructions().size()).sum();
+		}
+		return -1;
+	}
+
 	@Override
 	public int hashCode() {
 		return mthInfo.hashCode();

jadx-core/src/main/java/jadx/core/dex/visitors/debuginfo/DebugInfoApplyVisitor.java

@@ -143,7 +143,7 @@ public class DebugInfoApplyVisitor extends AbstractVisitor {
 	public static void applyDebugInfo(MethodNode mth, SSAVar ssaVar, ArgType type, String varName) {
 		TypeUpdateResult result = mth.root().getTypeUpdate().applyWithWiderAllow(ssaVar, type);
 		if (result == TypeUpdateResult.REJECT) {
-			if (LOG.isDebugEnabled()) {
+			if (Consts.DEBUG) {
 				LOG.debug("Reject debug info of type: {} and name: '{}' for {}, mth: {}", type, varName, ssaVar, mth);
 			}
 		} else {

jadx-core/src/main/java/jadx/core/dex/visitors/typeinference/TypeSearch.java

@@ -232,7 +232,9 @@ public class TypeSearch {
 		int size = candidateTypes.size();
 		if (size == 0) {
 			throw new JadxRuntimeException("No candidate types for var: " + ssaVar.getDetailedVarInfo(mth)
-					+ "\n  assigns: " + assigns + "\n  uses: " + uses);
+					+ "\n  assigns: " + assigns
+					+ "\n  uses: " + uses
+					+ "\n  mth insns count: " + mth.countInsns());
 		}
 		if (size == 1) {
 			varInfo.setTypeResolved(true);