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org.jetbrains.kotlin.load.kotlin.header.ReadKotlinClassHeaderAnnotationVisitor Maven / Gradle / Ivy
/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.load.kotlin.header;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.descriptors.SourceElement;
import org.jetbrains.kotlin.load.java.JvmAnnotationNames;
import org.jetbrains.kotlin.metadata.jvm.deserialization.BitEncoding;
import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmMetadataVersion;
import org.jetbrains.kotlin.name.ClassId;
import org.jetbrains.kotlin.name.FqName;
import org.jetbrains.kotlin.name.Name;
import org.jetbrains.kotlin.resolve.constants.ClassLiteralValue;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.jetbrains.kotlin.load.java.JvmAnnotationNames.*;
import static org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryClass.*;
import static org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader.Kind.*;
public class ReadKotlinClassHeaderAnnotationVisitor implements AnnotationVisitor {
private static final boolean IGNORE_OLD_METADATA = "true".equals(System.getProperty("kotlin.ignore.old.metadata"));
private static final Map HEADER_KINDS = new HashMap();
static {
// TODO: delete this at some point
HEADER_KINDS.put(ClassId.topLevel(new FqName("kotlin.jvm.internal.KotlinClass")), CLASS);
HEADER_KINDS.put(ClassId.topLevel(new FqName("kotlin.jvm.internal.KotlinFileFacade")), FILE_FACADE);
HEADER_KINDS.put(ClassId.topLevel(new FqName("kotlin.jvm.internal.KotlinMultifileClass")), MULTIFILE_CLASS);
HEADER_KINDS.put(ClassId.topLevel(new FqName("kotlin.jvm.internal.KotlinMultifileClassPart")), MULTIFILE_CLASS_PART);
HEADER_KINDS.put(ClassId.topLevel(new FqName("kotlin.jvm.internal.KotlinSyntheticClass")), SYNTHETIC_CLASS);
}
private int[] metadataVersionArray = null;
private String extraString = null;
private int extraInt = 0;
private String packageName = null;
private String[] data = null;
private String[] strings = null;
private String[] incompatibleData = null;
private KotlinClassHeader.Kind headerKind = null;
private String[] serializedIrFields = null;
@Nullable
public KotlinClassHeader createHeader() {
if (headerKind == null || metadataVersionArray == null) {
return null;
}
JvmMetadataVersion metadataVersion =
new JvmMetadataVersion(metadataVersionArray, (extraInt & JvmAnnotationNames.METADATA_STRICT_VERSION_SEMANTICS_FLAG) != 0);
if (!metadataVersion.isCompatible()) {
incompatibleData = data;
data = null;
}
else if (shouldHaveData() && data == null) {
// This means that the annotation is found and its ABI version is compatible, but there's no "data" string array in it.
// We tell the outside world that there's really no annotation at all
return null;
}
byte[] serializedIr = null;
if (serializedIrFields != null) {
serializedIr = BitEncoding.decodeBytes(serializedIrFields);
}
return new KotlinClassHeader(
headerKind,
metadataVersion,
data,
incompatibleData,
strings,
extraString,
extraInt,
packageName,
serializedIr
);
}
private boolean shouldHaveData() {
return headerKind == CLASS ||
headerKind == FILE_FACADE ||
headerKind == MULTIFILE_CLASS_PART;
}
@Nullable
@Override
public AnnotationArgumentVisitor visitAnnotation(@NotNull ClassId classId, @NotNull SourceElement source) {
FqName fqName = classId.asSingleFqName();
if (fqName.equals(METADATA_FQ_NAME)) {
return new KotlinMetadataArgumentVisitor();
}
if (fqName.equals(SERIALIZED_IR_FQ_NAME)) {
return new KotlinSerializedIrArgumentVisitor();
}
if (IGNORE_OLD_METADATA) return null;
if (headerKind != null) {
// Ignore all Kotlin annotations except the first found
return null;
}
KotlinClassHeader.Kind newKind = HEADER_KINDS.get(classId);
if (newKind != null) {
headerKind = newKind;
return new OldDeprecatedAnnotationArgumentVisitor();
}
return null;
}
@Override
public void visitEnd() {
}
private class KotlinMetadataArgumentVisitor implements AnnotationArgumentVisitor {
@Override
public void visit(@Nullable Name name, @Nullable Object value) {
if (name == null) return;
String string = name.asString();
if (KIND_FIELD_NAME.equals(string)) {
if (value instanceof Integer) {
headerKind = KotlinClassHeader.Kind.getById((Integer) value);
}
}
else if (METADATA_VERSION_FIELD_NAME.equals(string)) {
if (value instanceof int[]) {
metadataVersionArray = (int[]) value;
}
}
else if (METADATA_EXTRA_STRING_FIELD_NAME.equals(string)) {
if (value instanceof String) {
extraString = (String) value;
}
}
else if (METADATA_EXTRA_INT_FIELD_NAME.equals(string)) {
if (value instanceof Integer) {
extraInt = (Integer) value;
}
}
else if (METADATA_PACKAGE_NAME_FIELD_NAME.equals(string)) {
if (value instanceof String) {
packageName = (String) value;
}
}
}
@Override
public void visitClassLiteral(@Nullable Name name, @NotNull ClassLiteralValue classLiteralValue) {
}
@Override
@Nullable
public AnnotationArrayArgumentVisitor visitArray(@Nullable Name name) {
String string = name != null ? name.asString() : null;
if (METADATA_DATA_FIELD_NAME.equals(string)) {
return dataArrayVisitor();
}
else if (METADATA_STRINGS_FIELD_NAME.equals(string)) {
return stringsArrayVisitor();
}
else {
return null;
}
}
@NotNull
private AnnotationArrayArgumentVisitor dataArrayVisitor() {
return new CollectStringArrayAnnotationVisitor() {
@Override
protected void visitEnd(@NotNull String[] result) {
data = result;
}
};
}
@NotNull
private AnnotationArrayArgumentVisitor stringsArrayVisitor() {
return new CollectStringArrayAnnotationVisitor() {
@Override
protected void visitEnd(@NotNull String[] result) {
strings = result;
}
};
}
@Override
public void visitEnum(@Nullable Name name, @NotNull ClassId enumClassId, @NotNull Name enumEntryName) {
}
@Nullable
@Override
public AnnotationArgumentVisitor visitAnnotation(@Nullable Name name, @NotNull ClassId classId) {
return null;
}
@Override
public void visitEnd() {
}
}
private class OldDeprecatedAnnotationArgumentVisitor implements AnnotationArgumentVisitor {
@Override
public void visit(@Nullable Name name, @Nullable Object value) {
if (name == null) return;
String string = name.asString();
if ("version".equals(string)) {
if (value instanceof int[]) {
metadataVersionArray = (int[]) value;
}
}
else if ("multifileClassName".equals(string)) {
extraString = value instanceof String ? (String) value : null;
}
}
@Override
public void visitClassLiteral(@Nullable Name name, @NotNull ClassLiteralValue classLiteralValue) {
}
@Override
@Nullable
public AnnotationArrayArgumentVisitor visitArray(@Nullable Name name) {
String string = name != null ? name.asString() : null;
if ("data".equals(string) || "filePartClassNames".equals(string)) {
return dataArrayVisitor();
}
else if ("strings".equals(string)) {
return stringsArrayVisitor();
}
else {
return null;
}
}
@NotNull
private AnnotationArrayArgumentVisitor dataArrayVisitor() {
return new CollectStringArrayAnnotationVisitor() {
@Override
protected void visitEnd(@NotNull String[] data) {
ReadKotlinClassHeaderAnnotationVisitor.this.data = data;
}
};
}
@NotNull
private AnnotationArrayArgumentVisitor stringsArrayVisitor() {
return new CollectStringArrayAnnotationVisitor() {
@Override
protected void visitEnd(@NotNull String[] data) {
strings = data;
}
};
}
@Override
public void visitEnum(@Nullable Name name, @NotNull ClassId enumClassId, @NotNull Name enumEntryName) {
}
@Nullable
@Override
public AnnotationArgumentVisitor visitAnnotation(@Nullable Name name, @NotNull ClassId classId) {
return null;
}
@Override
public void visitEnd() {
}
}
private class KotlinSerializedIrArgumentVisitor implements AnnotationArgumentVisitor {
@Override
public void visit(@Nullable Name name, @Nullable Object value) {
}
@Override
public void visitClassLiteral(@Nullable Name name, @NotNull ClassLiteralValue classLiteralValue) {
}
@Override
@Nullable
public AnnotationArrayArgumentVisitor visitArray(@Nullable Name name) {
String string = name != null ? name.asString() : null;
if (SERIALIZED_IR_BYTES_FIELD_NAME.equals(string)) {
return serializedIrArrayVisitor();
}
else {
return null;
}
}
@NotNull
private AnnotationArrayArgumentVisitor serializedIrArrayVisitor() {
return new CollectStringArrayAnnotationVisitor() {
@Override
protected void visitEnd(@NotNull String[] result) {
serializedIrFields = result;
}
};
}
@Override
public void visitEnum(@Nullable Name name, @NotNull ClassId enumClassId, @NotNull Name enumEntryName) {
}
@Nullable
@Override
public AnnotationArgumentVisitor visitAnnotation(@Nullable Name name, @NotNull ClassId classId) {
return null;
}
@Override
public void visitEnd() {
}
}
private abstract static class CollectStringArrayAnnotationVisitor implements AnnotationArrayArgumentVisitor {
private final List strings;
public CollectStringArrayAnnotationVisitor() {
this.strings = new ArrayList();
}
@Override
public void visit(@Nullable Object value) {
if (value instanceof String) {
strings.add((String) value);
}
}
@Override
public void visitEnum(@NotNull ClassId enumClassId, @NotNull Name enumEntryName) {
}
@Override
public void visitClassLiteral(@NotNull ClassLiteralValue classLiteralValue) {
}
@Nullable
@Override
public AnnotationArgumentVisitor visitAnnotation(@NotNull ClassId classId) {
return null;
}
@Override
public void visitEnd() {
//noinspection SSBasedInspection
visitEnd(strings.toArray(new String[0]));
}
protected abstract void visitEnd(@NotNull String[] data);
}
}
