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Parse enums

This commit is contained in:
Johannes Frohnmeyer 2022-11-01 17:26:32 +01:00
parent fe2b1fbe24
commit ad238ac2b3
Signed by: Johannes
GPG Key ID: E76429612C2929F4
7 changed files with 101 additions and 17 deletions
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2
README.md
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@ -13,6 +13,7 @@ The goal of this AP is to
- Arrays
- Collections (Sets, Lists, Queues, Deques)
- java.util.Date as iso8601
- Enums
## Used properties
Use `@GPrefer` to choose one construction method if multiple are available
@ -30,7 +31,6 @@ Use `@GPrefer` to choose one construction method if multiple are available
## TODO
- Maps with string, primitive or enum keys
- Enums
- Support for nested types from libraries
- Static classes (for configs)

14
gson-compile-core/src/main/java/io/gitlab/jfronny/gson/compile/core/CCore.java
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@ -1,21 +1,7 @@
package io.gitlab.jfronny.gson.compile.core;
import io.gitlab.jfronny.commons.serialize.gson.api.v1.GsonHolder;
import io.gitlab.jfronny.gson.JsonSyntaxException;
import io.gitlab.jfronny.gson.internal.bind.util.ISO8601Utils;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Date;
public class CCore {
public static final GsonHolder HOLDER = new GsonHolder();
public static Date parseDate(String date) {
try {
return ISO8601Utils.parse(date, new ParsePosition(0));
} catch (ParseException e) {
throw new JsonSyntaxException("Failed parsing '" + date + "' as Date", e);
}
}
}

6
gson-compile-example/src/main/java/io/gitlab/jfronny/gson/Main.java
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@ -33,6 +33,8 @@ public class Main {
public Date date;
public EeE eEe;
public void setJoe(String joe) {
}
@ -81,4 +83,8 @@ public class Main {
}
}
}
public enum EeE {
Yes, Yay, Aaee;
}
}

1
gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/adapter/Adapter.java
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@ -10,7 +10,6 @@ import javax.lang.model.element.Element;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.Types;
import java.util.*;
import java.util.function.Consumer;
public abstract class Adapter<T extends Adapter<T>.Hydrated> {
protected Messager message;

1
gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/adapter/Adapters.java
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@ -20,6 +20,7 @@ public class Adapters {
new PrimitiveAdapter(),
new StringAdapter(),
new DateAdapter(),
new EnumAdapter(),
new ArrayAdapter(),
new CollectionAdapter(),
new OtherSerializableAdapter(),

32
gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/adapter/impl/DateAdapter.java
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@ -1,8 +1,13 @@
package io.gitlab.jfronny.gson.compile.processor.adapter.impl;
import com.squareup.javapoet.CodeBlock;
import com.squareup.javapoet.MethodSpec;
import io.gitlab.jfronny.gson.compile.processor.Cl;
import io.gitlab.jfronny.gson.compile.processor.adapter.Adapter;
import javax.lang.model.element.Modifier;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Date;
public class DateAdapter extends Adapter<DateAdapter.Hydrated> {
@ -26,7 +31,32 @@ public class DateAdapter extends Adapter<DateAdapter.Hydrated> {
@Override
public void generateRead() {
code.add("$T.parseDate(reader.nextString())", Cl.CCORE);
boolean found = false;
for (MethodSpec spec : klazz.methodSpecs) {
if (spec.name.equals("parseDate")) {
found = true;
break;
}
}
if (!found) {
CodeBlock.Builder kode = CodeBlock.builder();
kode.beginControlFlow("try")
.addStatement("return $T.parse(date, new $T(0))", Cl.GISO8601UTILS, ParsePosition.class)
.nextControlFlow("catch ($T e)", ParseException.class)
.addStatement("throw new JsonSyntaxException(\"Failed Parsing '\" + date + \"' as Date\", e)")
.endControlFlow();
klazz.addMethod(
MethodSpec.methodBuilder("parseDate")
.addModifiers(Modifier.PRIVATE, Modifier.STATIC)
.returns(Date.class)
.addParameter(String.class, "date")
.addCode(kode.build())
.build()
);
}
code.add("parseDate(reader.nextString())");
}
}
}

62
gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/adapter/impl/EnumAdapter.java Normal file
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@ -0,0 +1,62 @@
package io.gitlab.jfronny.gson.compile.processor.adapter.impl;
import com.squareup.javapoet.*;
import io.gitlab.jfronny.gson.compile.processor.TypeHelper;
import io.gitlab.jfronny.gson.compile.processor.adapter.Adapter;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.Modifier;
import javax.lang.model.type.DeclaredType;
public class EnumAdapter extends Adapter<EnumAdapter.Hydrated> {
@Override
public Hydrated instantiate() {
return new Hydrated();
}
public class Hydrated extends Adapter<Hydrated>.Hydrated {
private DeclaredType tel;
@Override
protected void afterHydrate() {
super.afterHydrate();
tel = null;
DeclaredType declared = TypeHelper.asDeclaredType(type);
if (declared == null) return;
if (declared.asElement().getKind() != ElementKind.ENUM) return;
tel = declared;
}
@Override
public boolean applies() {
return tel != null;
}
@Override
public void generateWrite(Runnable writeGet) {
code.add("writer.value(");
writeGet.run();
code.add(".name());\n");
}
@Override
public void generateRead() {
CodeBlock.Builder kode = CodeBlock.builder();
kode.beginControlFlow("for ($1T t : $1T.values())", tel)
.addStatement("if (t.name().equals(value)) return t")
.endControlFlow()
.addStatement("return null");
String methodName = "read$" + name;
klazz.addMethod(
MethodSpec.methodBuilder(methodName)
.addModifiers(Modifier.PRIVATE, Modifier.STATIC)
.returns(TypeName.get(tel))
.addParameter(String.class, "value")
.addCode(kode.build())
.build()
);
code.add("$N(reader.nextString())", methodName);
}
}
}