convex.core.data.StringTree Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of convex-core Show documentation
Show all versions of convex-core Show documentation
Convex core libraries and common utilities
The newest version!
package convex.core.data;
import convex.core.data.util.BlobBuilder;
import convex.core.exceptions.BadFormatException;
import convex.core.exceptions.InvalidDataException;
import convex.core.text.Text;
import convex.core.util.Errors;
/**
* String implementation class wrapping a BlobTree.
*
* This String implementation is used to represent long strings.
*/
public class StringTree extends AString {
public static final int MINIMUM_LENGTH=StringShort.MAX_LENGTH+1;
public static final int MAX_ENCODING_LENGTH = BlobTree.MAX_ENCODING_SIZE;
private final BlobTree data;
private StringTree(BlobTree data) {
super(data.count());
this.data=data;
}
public static StringTree create(BlobTree b) {
return new StringTree(b);
}
public static StringTree create(ABlob b) {
return create(BlobTree.create(b));
}
@Override
public AString slice(long start, long end) {
ABlob newData=data.slice(start, end);
if (data==newData) return this;
if (newData==null) return null;
return Strings.create(newData);
}
@Override
public void validateCell() throws InvalidDataException {
data.validateCell();
}
@Override
public int encodeRaw(byte[] bs, int pos) {
return data.encodeRaw(bs, pos);
}
@Override
public int writeRawData(byte[] bs, int pos) {
return data.getBytes(bs, pos);
}
/**
* Reads a StringTree from the given Blob encoding.
*
* @param length Length of StringTree in bytes
* @param b Blob to read from
* @param pos Start position in Blob (location of tag byte)
* @return New decoded instance
* @throws BadFormatException In the event of any encoding error
*/
public static StringTree read(long length, Blob b, int pos) throws BadFormatException {
BlobTree bt=BlobTree.read(length,b,pos);
StringTree result= new StringTree(bt);
result.attachEncoding(bt.getEncoding());
bt.attachEncoding(null); // invalidate this, since assumed tag will be wrong
return result;
}
@Override
public int estimatedEncodingSize() {
return data.estimatedEncodingSize();
}
@Override
public boolean isCanonical() {
return data.isCanonical();
}
@Override public final boolean isCVMValue() {
return true;
}
@Override
public int getRefCount() {
return data.getRefCount();
}
@Override
public Ref getRef(int i) {
return data.getRef(i);
}
@Override
public StringTree updateRefs(IRefFunction func) {
BlobTree bt2=data.updateRefs(func);
if (bt2==data) return this;
return new StringTree(bt2);
}
@Override
public StringTree toCanonical() {
return this;
}
@Override
public byte byteAt(long i) {
if ((i<0)||(i>=length)) return -1;
return data.byteAt(i);
}
@Override
public int intAt(long i) {
// TODO: potentially faster implementation
return super.intAt(i);
}
@Override
public int compareTo(ABlobLike o) {
return data.compareTo(o);
}
@Override
public BlobTree toBlob() {
return data;
}
@Override
protected void printEscaped(BlobBuilder sb, long start, long end) {
// TODO This could potentially be faster
long n=count();
if ((start<0)||(start>end)||(end>n)) throw new IllegalArgumentException(Errors.badRange(start, end));
for (long i=start; i