tdlight-team/tdlib-serializer
tdlight-team/tdlib-serializer
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Improve documentation, add modern switch-cases

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This commit is contained in:
Andrea Cavalli 2023-05-07 14:44:39 +02:00
parent 26fb875ae8
commit c77baa48e3
2 changed files with 224 additions and 50 deletions
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63
headers.txt
View File

@ -1,22 +1,52 @@
import java.io.ByteArrayOutputStream; import java.io.ByteArrayOutputStream;
import java.io.DataOutput; import java.io.DataOutput;
import java.io.DataOutputStream; import java.io.DataOutputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets; import java.nio.charset.StandardCharsets;
import java.lang.IllegalStateException;
import java.io.IOException; import java.io.IOException;
import java.io.DataInput; import java.io.DataInput;
import java.util.Arrays; import java.util.Arrays;
import java.util.Objects; import java.util.Objects;
/**
* This class contains as static nested classes all other TDLib interface
* type-classes and function-classes.
* <p>
* It has no inner classes, functions or public members.
*/
public final class TdApi { public final class TdApi {
private TdApi() {}
/**
* This class is a base class for all TDLib interface classes.
*/
public abstract static class Object { public abstract static class Object {
/**
* Returns a string representation of the object.
*
* @return a string representation of the object.
*/
public native String toString(); public native String toString();
/**
* Returns an identifier uniquely determining type of the object.
*
* @return a unique identifier of the object type.
*/
public abstract int getConstructor(); public abstract int getConstructor();
/**
* Default Object constructor.
*/
private Object() {} private Object() {}
/**
* Serialize the object.
*
* @return the current object serialized into a byte[].
* @throws IOException the serialization failed
*/
public byte[] serialize() throws IOException { public byte[] serialize() throws IOException {
try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) { try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
try (DataOutputStream out = new DataOutputStream(baos)) { try (DataOutputStream out = new DataOutputStream(baos)) {
@ -26,12 +56,33 @@ public final class TdApi {
} }
} }
/**
* Serialize the object.
*
* @param out the output in which the object is serialized.
* @throws IOException the serialization failed
*/
public abstract void serialize(DataOutput out) throws IOException; public abstract void serialize(DataOutput out) throws IOException;
} }
/**
* This class is a base class for all TDLib interface function-classes.
* @param <R> The function return type
*/
public abstract static class Function<R extends TdApi.Object> extends TdApi.Object { public abstract static class Function<R extends TdApi.Object> extends TdApi.Object {
private Function() {}
/**
public native String toString(); * Default Function constructor.
} */
private Function() {}
/**
* Returns a string representation of the object.
*
* @return a string representation of the object.
*/
public native String toString();
}

211
transform.java
View File

@ -16,6 +16,7 @@ import java.util.stream.Stream;
public class transform { public class transform {
static List<String> NATIVES = List.of("int", "long", "boolean", "String", "double", "byte[]", "byte"); static List<String> NATIVES = List.of("int", "long", "boolean", "String", "double", "byte[]", "byte");
static List<String> PRIMITIVES = List.of("int", "long", "boolean", "double", "byte");
static Map<String, String> NATIVE_TO_OBJ = Map.of("boolean", "Boolean", static Map<String, String> NATIVE_TO_OBJ = Map.of("boolean", "Boolean",
"byte[]", "Byte", "byte[]", "Byte",
"byte", "Byte", "byte", "Byte",
@ -270,31 +271,47 @@ public class transform {
} else { } else {
openFlags.add(StandardOpenOption.CREATE_NEW); openFlags.add(StandardOpenOption.CREATE_NEW);
} }
try (var w = new JavaWriter(Files.newBufferedWriter(outputPath, StandardCharsets.UTF_8, openFlags.toArray(OpenOption[]::new)), 1)) { try (var w = new JavaWriter(Files.newBufferedWriter(outputPath, StandardCharsets.UTF_8, openFlags.toArray(OpenOption[]::new)), 1, java17)) {
// Write package // Write package
w.write(package_).writeNewLine().writeNewLine(); w.write(package_).writeNewLine().writeNewLine();
// Write header // Write header
w.write(headers); w.write(headers);
w.writeIndent().writeOpenCustomBlock("public static class Deserializer").writeNewLine(); w.writeIndent().writeOpenDocs().writeNewLine();
w.writeIndent().writeDocs("This class deserializes TDLib classes").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenCustomBlock("public static class Deserializer").writeNewLine().writeNewLine();
w.writeIndent().writeOpenDocs().writeNewLine();
w.writeIndent().writeDocs("The default constructor").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenConstructorFunction("Deserializer", List.of(), null).writeNewLine();
w.writeCloseBlock(true).writeNewLine();
w.writeNewLine();
w.writeIndent().writeOpenDocs().writeNewLine();
w.writeIndent().writeDocs("Deserialize the TDLib class").writeNewLine();
w.writeIndent().writeDocs("@param input stream that contain the serialized TDLib class to deserialize").writeNewLine();
w.writeIndent().writeDocs("@return the deserialized TDLib class").writeNewLine();
w.writeIndent().writeDocs("@throws IOException the deserialization failed").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenFunction("deserialize", List.of(Map.entry("DataInput", "input")), "static Object", "IOException").writeNewLine(); w.writeIndent().writeOpenFunction("deserialize", List.of(Map.entry("DataInput", "input")), "static Object", "IOException").writeNewLine();
w.writeIndent().writeOpenSwitch("input.readInt()").writeNewLine(); w.writeIndent().writeOpenSwitchExpression(null, null, false, "input.readInt()").writeNewLine();
allClasses.forEach((className, x) -> { allClasses.forEach((className, x) -> {
w.writeIndent().writeOpenSwitch(className + ".CONSTRUCTOR").writeNewLine(); w.writeIndent().writeSwitchCaseAndYield(className + ".CONSTRUCTOR", "new " + className + "(input)").writeNewLine();
w.writeIndent().writeReturn("new " + className + "(input)").writeNewLine();
w.decrementIndentation();
}); });
w.writeIndent().writeOpenSwitchDefault().writeNewLine(); w.writeIndent().writeOpenSwitchDefault().writeNewLine();
w.writeIndent().writeException("UnsupportedOperationException").writeNewLine(); w.writeIndent().writeYieldException("UnsupportedOperationException").writeNewLine();
w.decrementIndentation(); w.writeIndent().writeCloseCase().writeNewLine();
w.writeCloseSwitchExpression().writeNewLine();
w.writeCloseBlock(true).writeNewLine();
w.writeCloseBlock(true).writeNewLine(); w.writeCloseBlock(true).writeNewLine();
w.writeCloseBlock(true).writeNewLine(); w.writeCloseBlock(true).writeNewLine();
@ -328,12 +345,19 @@ public class transform {
w.write(lines.get(i)); w.write(lines.get(i));
} }
w.decrementIndentation(); w.decrementIndentation();
w.writeOpenCustomBlock(""); w.writeOpenCustomBlock("").writeNewLine();
} else { } else {
w.writeOpenCustomBlock("public abstract static class " + containerClassName + " extends Object"); w.writeOpenCustomBlock("public abstract static class " + containerClassName + " extends Object").writeNewLine();
} }
w.writeCloseBlock().writeNewLine().writeNewLine(); w.writeNewLine();
w.writeIndent().writeOpenDocs().writeNewLine();
w.writeIndent().writeDocs("Default class constructor.").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenConstructorFunction(containerClassName, List.of(), null).writeCloseBlock().writeNewLine().writeNewLine();
w.writeCloseBlock(true).writeNewLine().writeNewLine();
}); });
allClasses.forEach((className, classMeta) -> { allClasses.forEach((className, classMeta) -> {
@ -347,7 +371,8 @@ public class transform {
} else { } else {
classGenerics = ""; classGenerics = "";
} }
w.writeOpenCustomBlock("public static final class", className, "extends", classMeta.containerName + classGenerics); w.writeOpenCustomBlock("public static final class", className, "extends", classMeta.containerName + classGenerics).writeNewLine();
w.writeNewLine();
classMeta.arguments.forEach(argument -> { classMeta.arguments.forEach(argument -> {
w.writeNewLine().writeIndent().writeOpenDocs().writeNewLine().writeIndent(); w.writeNewLine().writeIndent().writeOpenDocs().writeNewLine().writeIndent();
@ -367,6 +392,7 @@ public class transform {
w.writeNewLine().writeIndent(); w.writeNewLine().writeIndent();
w.writeOpenConstructorFunction(className, List.of(), null); w.writeOpenConstructorFunction(className, List.of(), null);
w.writeCloseBlock().writeNewLine(); w.writeCloseBlock().writeNewLine();
w.writeNewLine();
w.writeIndent().writeOpenDocs(); w.writeIndent().writeOpenDocs();
@ -376,21 +402,25 @@ public class transform {
classMeta.arguments.forEach(arg -> { classMeta.arguments.forEach(arg -> {
var docs = arg.docs; var docs = arg.docs;
w.writeNewLine().writeIndent(); w.writeNewLine().writeIndent();
w.writeDocs("@param " + arg.type + " " + arg.name + " " + docs.get(0)); w.writeDocs("@param " + arg.name + " " + docs.get(0));
}); });
classMeta.docs.subList(1, classMeta.docs.size()).forEach(doc -> w.writeNewLine().writeIndent().writeDocs(doc)); classMeta.docs.subList(1, classMeta.docs.size()).forEach(doc -> w.writeNewLine().writeIndent().writeDocs(doc));
w.writeNewLine().writeIndent().writeCloseDocs(); w.writeNewLine().writeIndent().writeCloseDocs();
w.writeNewLine(); w.writeNewLine();
if (!classMeta.arguments.isEmpty()) { if (!classMeta.arguments.isEmpty()) {
w.writeIndent().writeOpenConstructorFunction(className, classMeta.arguments.stream().map(a -> Map.entry(a.name, a.type)).collect(Collectors.toList()), null); w.writeIndent().writeOpenConstructorFunction(className, classMeta.arguments.stream().map(a -> Map.entry(a.type, a.name)).collect(Collectors.toList()), null);
w.writeNewLine(); w.writeNewLine();
classMeta.arguments.forEach(arg -> w.writeIndent().writeClassAssign(arg.name, arg.name).writeNewLine()); classMeta.arguments.forEach(arg -> w.writeIndent().writeClassAssign(arg.name, arg.name).writeNewLine());
w.writeCloseBlock(true).writeNewLine(); w.writeCloseBlock(true).writeNewLine();
w.writeNewLine().writeIndent().writeOpenDocs();
classMeta.docs.forEach(doc -> w.writeNewLine().writeIndent().writeDocs(doc));
w.writeNewLine().writeIndent().writeCloseDocs().writeNewLine();
} }
w.writeNewLine().writeIndent().writeOpenDocs().writeNewLine();
classMeta.docs.forEach(doc -> w.writeIndent().writeDocs(doc).writeNewLine());
w.writeIndent().writeDocs("").writeNewLine();
w.writeIndent().writeDocs("@param input Serialized input").writeNewLine();
w.writeIndent().writeDocs("@throws IOException the deserialization failed").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenConstructorFunction(className, List.of(Map.entry("DataInput", "input")), "IOException").writeNewLine(); w.writeIndent().writeOpenConstructorFunction(className, List.of(Map.entry("DataInput", "input")), "IOException").writeNewLine();
classMeta.arguments.forEach(arg -> { classMeta.arguments.forEach(arg -> {
@ -439,11 +469,18 @@ public class transform {
w.writeIndent().writeDocs("@return this.CONSTRUCTOR").writeNewLine(); w.writeIndent().writeDocs("@return this.CONSTRUCTOR").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine(); w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenFunction("getConstructor", List.of(), "int", null).writeNewLine(); w.writeIndent().writeOpenFunction("getConstructor", List.of(), "int", null).writeNewLine();
w.writeIndent().writeReturn("CONSTRUCTOR").writeNewLine(); w.writeIndent().writeReturn(className + ".CONSTRUCTOR").writeNewLine();
w.writeCloseBlock(true).writeNewLine(); w.writeCloseBlock(true).writeNewLine();
w.writeNewLine(); w.writeNewLine();
w.writeIndent().writeOpenDocs().writeNewLine();
w.writeIndent().writeDocs("Serialize the TDLib class").writeNewLine();
w.writeIndent().writeDocs("@param output output data stream").writeNewLine();
w.writeIndent().writeDocs("@throws IOException the serialization failed").writeNewLine();
w.writeIndent().writeCloseDocs().writeNewLine();
w.writeIndent().writeOpenFunction("serialize", List.of(Map.entry("DataOutput", "output")), "void", "IOException").writeNewLine(); w.writeIndent().writeOpenFunction("serialize", List.of(Map.entry("DataOutput", "output")), "void", "IOException").writeNewLine();
w.writeIndent().writeCall("output.writeInt", "CONSTRUCTOR").writeNewLine(); w.writeIndent().writeCall("output.writeInt", className + ".CONSTRUCTOR").writeNewLine();
classMeta.arguments.forEach(arg -> { classMeta.arguments.forEach(arg -> {
if (NATIVES.contains(arg.type)) { if (NATIVES.contains(arg.type)) {
serializeNative(w, arg.name, arg.type); serializeNative(w, arg.name, arg.type);
@ -458,7 +495,7 @@ public class transform {
w.writeIndent().writeCall("output.writeInt", "this." + arg.name + ".length").writeNewLine(); w.writeIndent().writeCall("output.writeInt", "this." + arg.name + ".length").writeNewLine();
w.writeIndent().writeOpenFor("int i = 0", "i < this." + arg.name + ".length", "i++").writeNewLine(); w.writeIndent().writeOpenFor("int i = 0", "i < this." + arg.name + ".length", "i++").writeNewLine();
if (NATIVES.contains(baseArgType)) { if (NATIVES.contains(baseArgType)) {
serializeNative(w, baseArgType, arg.name + "[i]", false); serializeNative(w, arg.name + "[i]", baseArgType, false);
} else { } else {
serializeTdApi(w, arg.name + "[i]", false); serializeTdApi(w, arg.name + "[i]", false);
} }
@ -475,7 +512,7 @@ public class transform {
w.writeIndent().writeCall("output.writeInt", "this." + arg.name + "[i].length").writeNewLine(); w.writeIndent().writeCall("output.writeInt", "this." + arg.name + "[i].length").writeNewLine();
w.writeIndent().writeOpenFor("int j = 0", "j < this." + arg.name + "[i].length", "j++").writeNewLine(); w.writeIndent().writeOpenFor("int j = 0", "j < this." + arg.name + "[i].length", "j++").writeNewLine();
if (NATIVES.contains(baseArgType)) { if (NATIVES.contains(baseArgType)) {
serializeNative(w, baseArgType, arg.name + "[i][j]", false); serializeNative(w, arg.name + "[i][j]", baseArgType, false);
} else { } else {
serializeTdApi(w, arg.name + "[i][j]", false); serializeTdApi(w, arg.name + "[i][j]", false);
} }
@ -505,7 +542,7 @@ public class transform {
} else if (!arg.type.endsWith("[]")) { } else if (!arg.type.endsWith("[]")) {
w.writeOpenIf("!Objects.equals(this." + arg.name + ", " + otherClass + "." + arg.name + ")"); w.writeOpenIf("!Objects.equals(this." + arg.name + ", " + otherClass + "." + arg.name + ")");
} else if (arg.type.endsWith("[][]")) { } else if (arg.type.endsWith("[][]")) {
w.writeOpenIf("!Arrays.deepEquals(this." + arg.type + ", " + otherClass + "." + arg.name + ")"); w.writeOpenIf("!Arrays.deepEquals(this." + arg.name + ", " + otherClass + "." + arg.name + ")");
} else { } else {
w.writeOpenIf("!Arrays.equals(this." + arg.name + ", " + otherClass + "." + arg.name + ")"); w.writeOpenIf("!Arrays.equals(this." + arg.name + ", " + otherClass + "." + arg.name + ")");
} }
@ -518,14 +555,14 @@ public class transform {
w.writeIndent().writeOpenFunction("hashCode", List.of(), "int", null).writeNewLine(); w.writeIndent().writeOpenFunction("hashCode", List.of(), "int", null).writeNewLine();
w.writeIndent(); w.writeIndent();
if (!classMeta.arguments.isEmpty()) { if (!classMeta.arguments.isEmpty()) {
var primitives = classMeta.arguments.stream().filter(n -> NATIVES.contains(n.type)).collect(Collectors.toList()); var primitives = classMeta.arguments.stream().filter(n -> PRIMITIVES.contains(n.type)).collect(Collectors.toList());
if (!primitives.isEmpty() && classMeta.arguments.size() == 1) { if (!primitives.isEmpty() && classMeta.arguments.size() == 1) {
w.writeReturn(NATIVE_TO_OBJ.get(primitives.get(0).type) + ".hashCode(this." + primitives.get(0).name + ")"); w.writeReturn(NATIVE_TO_OBJ.get(primitives.get(0).type) + ".hashCode(this." + primitives.get(0).name + ")");
} else if (!primitives.isEmpty()) { } else if (!primitives.isEmpty()) {
w.writeLocalAssign("int", "result", NATIVE_TO_OBJ.get(primitives.get(0).type) + ".hashCode(this." + primitives.get(0).name + ")").writeNewLine(); w.writeLocalAssign("int", "result", NATIVE_TO_OBJ.get(primitives.get(0).type) + ".hashCode(this." + primitives.get(0).name + ")").writeNewLine();
w.writeIndent(); w.writeIndent();
} }
var tdapi = classMeta.arguments.stream().filter(n -> !NATIVES.contains(n.type)).collect(Collectors.toList()); var tdapi = classMeta.arguments.stream().filter(n -> !PRIMITIVES.contains(n.type)).collect(Collectors.toList());
int start; int start;
if (!tdapi.isEmpty() && classMeta.arguments.size() == 1) { if (!tdapi.isEmpty() && classMeta.arguments.size() == 1) {
w.writeReturn(hashObject("this." + tdapi.get(0).name, tdapi.get(0).type)); w.writeReturn(hashObject("this." + tdapi.get(0).name, tdapi.get(0).type));
@ -549,7 +586,7 @@ public class transform {
w.writeReturn("result"); w.writeReturn("result");
} }
} else { } else {
w.writeReturn("CONSTRUCTOR"); w.writeReturn(className + ".CONSTRUCTOR");
} }
w.writeNewLine(); w.writeNewLine();
@ -628,7 +665,7 @@ public class transform {
w.writeIndent().writeOpenIfElse(true).writeNewLine(); w.writeIndent().writeOpenIfElse(true).writeNewLine();
w.writeIndent().writeCall("output.writeBoolean", "true").writeNewLine(); w.writeIndent().writeCall("output.writeBoolean", "true").writeNewLine();
} }
var tmpName = argName.split("[", 2)[0] + "Tmp"; var tmpName = argName.split("\\[", 2)[0] + "Tmp";
w.writeIndent().writeLocalAssign("byte[]", tmpName, "this." + argName + ".getBytes(StandardCharsets.UTF_8)").writeNewLine(); w.writeIndent().writeLocalAssign("byte[]", tmpName, "this." + argName + ".getBytes(StandardCharsets.UTF_8)").writeNewLine();
w.writeIndent().writeCall("output.writeInt", tmpName + ".length").writeNewLine(); w.writeIndent().writeCall("output.writeInt", tmpName + ".length").writeNewLine();
w.writeIndent().writeCall("output.write", tmpName).writeNewLine(); w.writeIndent().writeCall("output.write", tmpName).writeNewLine();
@ -636,6 +673,7 @@ public class transform {
w.writeCloseBlock(true).writeNewLine(); w.writeCloseBlock(true).writeNewLine();
} }
break; break;
default: throw new UnsupportedOperationException(argName + ":" + argType);
} }
} }
@ -649,19 +687,18 @@ public class transform {
} }
w.writeIndent(); w.writeIndent();
if (cont.containsKey(argType)) { if (cont.containsKey(argType)) {
w.writeOpenSwitch("input.readInt()").writeNewLine(); w.writeOpenSwitchExpression(null, "this." + argName, true, "input.readInt()").writeNewLine();
classes.forEach((className, classMeta) -> { classes.forEach((className, classMeta) -> {
if (classMeta.containerName.equals(argType) && !className.equals(argType)) { if (classMeta.containerName.equals(argType) && !className.equals(argType)) {
w.writeIndent().writeOpenSwitchCase(className + ".CONSTRUCTOR"); w.writeIndent().writeSwitchCaseAndYield(className + ".CONSTRUCTOR", "new " + className + "(input)").writeNewLine();
w.writeNewLine().writeIndent().writeClassAssign(argName, "new " + className + "(input)");
w.writeNewLine().writeIndent().writeSwitchBreak().writeNewLine();
} }
}); });
w.writeIndent().writeOpenSwitchDefault().writeNewLine(); w.writeIndent().writeOpenSwitchDefault().writeNewLine();
w.writeIndent().writeException("UnsupportedOperationException").writeNewLine().decrementIndentation(); w.writeIndent().writeYieldException("UnsupportedOperationException").writeNewLine();
w.writeCloseBlock(true).writeNewLine(); w.writeIndent().writeCloseCase().writeNewLine();
w.writeCloseSwitchExpression().writeNewLine();
} else { } else {
w.writeOpenIf(argType + ".CONSTRUCTOR != input.readInt()"); w.writeOpenIf(argType + ".CONSTRUCTOR != input.readInt()");
w.writeNewLine().writeIndent().writeException("UnsupportedOperationException"); w.writeNewLine().writeIndent().writeException("UnsupportedOperationException");
@ -713,7 +750,7 @@ public class transform {
if (nullCheck) { if (nullCheck) {
w.writeIndent().writeOpenIf("input.readBoolean()").writeNewLine(); w.writeIndent().writeOpenIf("input.readBoolean()").writeNewLine();
} }
var tmpName = name.split("\\[", 1)[0] + "Tmp"; var tmpName = name.split("\\[", 2)[0] + "Tmp";
w.writeIndent().writeLocalAssign("byte[]", tmpName, "new byte[input.readInt()]").writeNewLine(); w.writeIndent().writeLocalAssign("byte[]", tmpName, "new byte[input.readInt()]").writeNewLine();
w.writeIndent().writeCall("input.readFully", tmpName).writeNewLine(); w.writeIndent().writeCall("input.readFully", tmpName).writeNewLine();
w.writeIndent().writeClassAssign(name, "new String(" + tmpName + ", StandardCharsets.UTF_8)").writeNewLine(); w.writeIndent().writeClassAssign(name, "new String(" + tmpName + ", StandardCharsets.UTF_8)").writeNewLine();
@ -830,11 +867,15 @@ public class transform {
@SuppressWarnings({"UnusedReturnValue", "unused", "resource"}) @SuppressWarnings({"UnusedReturnValue", "unused", "resource"})
public static class JavaWriter implements Closeable { public static class JavaWriter implements Closeable {
private final Writer os; private final Writer os;
private final boolean java17;
private int depth; private int depth;
private boolean insideSwitchExpression;
private String switchExpressionVarName;
public JavaWriter(Writer os, int depth) { public JavaWriter(Writer os, int depth, boolean java17) {
this.os = os; this.os = os;
this.depth = depth; this.depth = depth;
this.java17 = java17;
} }
public JavaWriter write(String data) { public JavaWriter write(String data) {
@ -915,27 +956,109 @@ public class transform {
return this; return this;
} }
public JavaWriter writeOpenSwitchExpression(String varType, String varName, boolean alreadyExistingVar, String data) {
if (insideSwitchExpression) throw new UnsupportedOperationException();
insideSwitchExpression = true;
this.switchExpressionVarName = varName;
if (java17) {
if (switchExpressionVarName == null) {
write("return switch (" + data + ") {");
} else if (alreadyExistingVar) {
write(varName + " = switch (" + data + ") {");
} else {
write((varType == null ? "var" : varType) + " " + varName + " = switch (" + data + ") {");
}
} else {
if (!alreadyExistingVar && varName != null) {
write((varType == null ? "Object" : varType) + " " + varName + ";");
writeNewLine();
writeIndent();
}
write("switch(" + data + ") {");
}
incrementIndentation();
return this;
}
public JavaWriter writeSwitchBreak() { public JavaWriter writeSwitchBreak() {
if (insideSwitchExpression) throw new UnsupportedOperationException();
decrementIndentation(); decrementIndentation();
write("break;"); write("break;");
return this; return this;
} }
public JavaWriter writeYield(String expression) {
if (!insideSwitchExpression) throw new UnsupportedOperationException();
if (java17) {
write("yield " + expression + ";");
} else if (this.switchExpressionVarName == null) {
write("return " + expression + ";");
} else {
write(this.switchExpressionVarName + " = " + expression + "; break;");
}
decrementIndentation();
return this;
}
public JavaWriter writeYieldException(String expression) {
if (!insideSwitchExpression) throw new UnsupportedOperationException();
write("throw new " + expression + "();");
decrementIndentation();
return this;
}
public JavaWriter writeCloseCase() {
write("}");
return this;
}
public JavaWriter writeCloseSwitchExpression() {
decrementIndentation();
writeIndent();
if (!insideSwitchExpression) throw new UnsupportedOperationException();
insideSwitchExpression = false;
if (java17) {
write("};");
} else {
write("}");
}
return this;
}
public JavaWriter writeOpenSwitchCase(String data) { public JavaWriter writeOpenSwitchCase(String data) {
if (java17 && insideSwitchExpression) {
write("case " + data + " -> {");
} else {
write("case " + data + ":");
}
incrementIndentation(); incrementIndentation();
write("case " + data + ":"); return this;
}
public JavaWriter writeSwitchCaseAndYield(String caseExpression, String yieldExpression) {
if (java17 && insideSwitchExpression) {
write("case " + caseExpression + " -> ");
} else {
write("case " + caseExpression + ": ");
}
if (!insideSwitchExpression) throw new UnsupportedOperationException();
if (java17) {
write(yieldExpression + ";");
} else if (this.switchExpressionVarName == null) {
write("return " + yieldExpression + ";");
} else {
write(this.switchExpressionVarName + " = " + yieldExpression + "; break;");
}
return this; return this;
} }
public JavaWriter writeOpenSwitchDefault() { public JavaWriter writeOpenSwitchDefault() {
if (java17 && insideSwitchExpression) {
write("default -> {");
} else {
write("default: {");
}
incrementIndentation(); incrementIndentation();
write("default:");
return this;
}
public JavaWriter writeSwitchDefault() {
incrementIndentation();
write("default:");
return this; return this;
} }