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#78 improve exception handling

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This commit is contained in:
Yann Massard 2020-04-29 09:15:57 +02:00 committed by David Renshaw
parent 37d067797a
commit a16a8b517c
8 changed files with 29 additions and 40 deletions
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2
runtime/src/main/java/org/capnproto/BufferedInputStreamWrapper.java
View file

@ -100,7 +100,7 @@ public final class BufferedInputStreamWrapper implements BufferedInputStream {
while (numRead < minBytes) {
int res = reader.read(buf);
if (res < 0) {
throw new Error("premature EOF");
throw new DecodeException("premature EOF");
}
numRead += res;
}

2
runtime/src/main/java/org/capnproto/ElementSize.java
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@ -41,7 +41,7 @@ public final class ElementSize {
case EIGHT_BYTES: return 64;
case POINTER: return 0;
case INLINE_COMPOSITE: return 0;
default : throw new Error("impossible field size: " + size);
default : throw new IllegalArgumentException("impossible field size: " + size);
}
}

2
runtime/src/main/java/org/capnproto/GeneratedClassSupport.java
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@ -28,7 +28,7 @@ public final class GeneratedClassSupport {
buffer.order(java.nio.ByteOrder.LITTLE_ENDIAN);
return new SegmentReader(buffer, new ReaderArena(new java.nio.ByteBuffer[0], 0x7fffffffffffffffL));
} catch (Exception e) {
throw new Error("could not decode raw bytes from String");
throw new DecodeException("could not decode raw bytes from String");
}
}
}

4
runtime/src/main/java/org/capnproto/MessageBuilder.java
View file

@ -80,10 +80,10 @@ public final class MessageBuilder {
if (rootSegment.currentSize() == 0) {
int location = rootSegment.allocate(1);
if (location == SegmentBuilder.FAILED_ALLOCATION) {
throw new Error("could not allocate root pointer");
throw new RuntimeException("could not allocate root pointer");
}
if (location != 0) {
throw new Error("First allocated word of new segment was not at offset 0");
throw new RuntimeException("First allocated word of new segment was not at offset 0");
}
return new AnyPointer.Builder(rootSegment, location);
} else {

6
runtime/src/main/java/org/capnproto/PackedInputStream.java
View file

@ -38,7 +38,7 @@ public final class PackedInputStream implements ReadableByteChannel {
if (len == 0) { return 0; }
if (len % 8 != 0) {
throw new Error("PackedInputStream reads must be word-aligned");
throw new DecodeException("PackedInputStream reads must be word-aligned");
}
int outPtr = outBuf.position();
@ -91,13 +91,13 @@ public final class PackedInputStream implements ReadableByteChannel {
if (tag == 0) {
if (inBuf.remaining() == 0) {
throw new Error("Should always have non-empty buffer here.");
throw new DecodeException("Should always have non-empty buffer here.");
}
int runLength = (0xff & (int)inBuf.get()) * 8;
if (runLength > outEnd - outPtr) {
throw new Error("Packed input did not end cleanly on a segment boundary");
throw new DecodeException("Packed input did not end cleanly on a segment boundary");
}
for (int i = 0; i < runLength; ++i) {

2
runtime/src/main/java/org/capnproto/StructBuilder.java
View file

@ -210,7 +210,7 @@ public class StructBuilder {
// (but ignore empty sections).
if ((sharedDataSize == 0 || other.data == this.data) &&
(sharedPointerCount == 0 || other.pointers == this.pointers)) {
throw new Error("Only one of the section pointers is pointing to ourself");
throw new RuntimeException("Only one of the section pointers is pointing to ourself");
}
// So `other` appears to be a reader for this same struct. No copying is needed.

25
runtime/src/main/java/org/capnproto/Text.java
View file

@ -22,6 +22,7 @@
package org.capnproto;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
public final class Text {
public static final class Factory implements
@ -88,14 +89,10 @@ public final class Text {
}
public Reader(String value) {
try {
byte[] bytes = value.getBytes("UTF-8");
this.buffer = ByteBuffer.wrap(bytes);
this.offset = 0;
this.size = bytes.length;
} catch (java.io.UnsupportedEncodingException e) {
throw new Error("UTF-8 is unsupported");
}
byte[] bytes = value.getBytes(StandardCharsets.UTF_8);
this.buffer = ByteBuffer.wrap(bytes);
this.offset = 0;
this.size = bytes.length;
}
public final int size() {
@ -118,11 +115,7 @@ public final class Text {
dup.position(this.offset);
dup.get(bytes, 0, this.size);
try {
return new String(bytes, "UTF-8");
} catch (java.io.UnsupportedEncodingException e) {
throw new Error("UTF-8 is unsupported");
}
return new String(bytes, StandardCharsets.UTF_8);
}
}
@ -160,11 +153,7 @@ public final class Text {
dup.position(this.offset);
dup.get(bytes, 0, this.size);
try {
return new String(bytes, "UTF-8");
} catch (java.io.UnsupportedEncodingException e) {
throw new Error("UTF-8 is unsupported");
}
return new String(bytes, StandardCharsets.UTF_8);
}
}

26
runtime/src/main/java/org/capnproto/WireHelpers.java
View file

@ -257,7 +257,7 @@ final class WireHelpers {
case ElementSize.INLINE_COMPOSITE: {
long elementTag = segment.get(ptr);
if (WirePointer.kind(elementTag) != WirePointer.STRUCT) {
throw new Error("Don't know how to handle non-STRUCT inline composite.");
throw new RuntimeException("Don't know how to handle non-STRUCT inline composite.");
}
int dataSize = StructPointer.dataSize(elementTag);
int pointerCount = StructPointer.ptrCount(elementTag);
@ -280,9 +280,9 @@ final class WireHelpers {
break;
}
case WirePointer.FAR:
throw new Error("Unexpected FAR pointer.");
throw new IllegalArgumentException("Unexpected FAR pointer.");
case WirePointer.OTHER:
throw new Error("Unexpected OTHER pointer.");
throw new IllegalArgumentException("Unexpected OTHER pointer.");
}
}
@ -411,7 +411,7 @@ final class WireHelpers {
if (defaultSegment == null) {
return initStructPointer(factory, refOffset, segment, size);
} else {
throw new Error("unimplemented");
throw new RuntimeException("unimplemented");
}
}
FollowBuilderFarsResult resolved = followBuilderFars(ref, target, segment);
@ -525,7 +525,7 @@ final class WireHelpers {
int origRefTarget = WirePointer.target(origRefOffset, origRef);
if (WirePointer.isNull(origRef)) {
throw new Error("unimplemented");
throw new RuntimeException("unimplemented");
}
//# We must verify that the pointer has the right size. Unlike
@ -551,7 +551,7 @@ final class WireHelpers {
//# therefore never need to upgrade the data in this case,
//# but we do need to validate that it is a valid upgrade
//# from what we expected.
throw new Error("unimplemented");
throw new RuntimeException("unimplemented");
} else {
int dataSize = ElementSize.dataBitsPerElement(oldSize);
int pointerCount = ElementSize.pointersPerElement(oldSize);
@ -581,7 +581,7 @@ final class WireHelpers {
int origRefTarget = WirePointer.target(origRefOffset, origRef);
if (WirePointer.isNull(origRef)) {
throw new Error("unimplemented");
throw new RuntimeException("unimplemented");
}
//# We must verify that the pointer has the right size and potentially upgrade it if not.
@ -684,7 +684,7 @@ final class WireHelpers {
//# Upgrading to an inline composite list.
if (oldSize == ElementSize.BIT) {
throw new Error("Found bit list where struct list was expected; " +
throw new RuntimeException("Found bit list where struct list was expected; " +
"upgrading boolean lists to struct is no longer supported.");
}
@ -935,7 +935,7 @@ final class WireHelpers {
dataSize, value.pointerCount);
if (value.dataSize == 1) {
throw new Error("single bit case not handled");
throw new RuntimeException("single bit case not handled");
} else {
memcpy(allocation.segment.buffer, allocation.ptr * Constants.BYTES_PER_WORD,
value.segment.buffer, value.data, value.dataSize / Constants.BITS_PER_BYTE);
@ -974,7 +974,7 @@ final class WireHelpers {
case 32: elementSize = ElementSize.FOUR_BYTES; break;
case 64: elementSize = ElementSize.EIGHT_BYTES; break;
default:
throw new Error("invalid list step size: " + value.step);
throw new RuntimeException("invalid list step size: " + value.step);
}
ListPointer.set(allocation.segment.buffer, allocation.refOffset, elementSize, value.elementCount);
@ -1124,9 +1124,9 @@ final class WireHelpers {
case WirePointer.FAR :
throw new DecodeException("Unexpected FAR pointer.");
case WirePointer.OTHER :
throw new Error("copyPointer is unimplemented for OTHER pointers");
throw new RuntimeException("copyPointer is unimplemented for OTHER pointers");
}
throw new Error("unreachable");
throw new RuntimeException("unreachable");
}
static <T> T readListPointer(ListReader.Factory<T> factory,
@ -1150,7 +1150,7 @@ final class WireHelpers {
}
if (nestingLimit <= 0) {
throw new Error("nesting limit exceeded");
throw new DecodeException("nesting limit exceeded");
}
int refTarget = WirePointer.target(refOffset, ref);