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package com.github.javaparser.generator.core.node;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.EnumConstantDeclaration;
import com.github.javaparser.ast.body.EnumDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.generator.NodeGenerator;
import com.github.javaparser.metamodel.BaseNodeMetaModel;
import com.github.javaparser.metamodel.JavaParserMetaModel;
import com.github.javaparser.metamodel.PropertyMetaModel;
import com.github.javaparser.utils.SourceRoot;
import java.util.*;
import static com.github.javaparser.JavaParser.parseType;
import static com.github.javaparser.ast.Modifier.FINAL;
import static com.github.javaparser.ast.Modifier.PUBLIC;
import static com.github.javaparser.utils.CodeGenerationUtils.f;
import static com.github.javaparser.utils.Utils.camelCaseToScreaming;
public class PropertyGenerator extends NodeGenerator {
private final Map<String, PropertyMetaModel> declaredProperties = new HashMap<>();
private final Map<String, PropertyMetaModel> derivedProperties = new HashMap<>();
public PropertyGenerator(SourceRoot sourceRoot) {
super(sourceRoot);
}
@Override
protected void generateNode(BaseNodeMetaModel nodeMetaModel, CompilationUnit nodeCu, ClassOrInterfaceDeclaration nodeCoid) {
for (PropertyMetaModel property : nodeMetaModel.getDeclaredPropertyMetaModels()) {
generateGetter(nodeMetaModel, nodeCoid, property);
generateSetter(nodeMetaModel, nodeCoid, property);
}
nodeMetaModel.getDerivedPropertyMetaModels().forEach(p -> derivedProperties.put(p.getName(), p));
}
private void generateSetter(BaseNodeMetaModel nodeMetaModel, ClassOrInterfaceDeclaration nodeCoid, PropertyMetaModel property) {
final String name = property.getName();
// Fill body
final String observableName = camelCaseToScreaming(name.startsWith("is") ? name.substring(2) : name);
declaredProperties.put(observableName, property);
if (property == JavaParserMetaModel.nodeMetaModel.commentPropertyMetaModel) {
// Node.comment has a very specific setter that we shouldn't overwrite.
return;
}
final MethodDeclaration setter = new MethodDeclaration(EnumSet.of(PUBLIC), parseType(property.getContainingNodeMetaModel().getTypeNameGenerified()), property.getSetterMethodName());
if (property.getContainingNodeMetaModel().hasWildcard()) {
setter.setType(parseType("T"));
}
setter.addAndGetParameter(property.getTypeNameForSetter(), property.getName())
.addModifier(FINAL);
final BlockStmt body = setter.getBody().get();
body.getStatements().clear();
if (property.isRequired()) {
Class<?> type = property.getType();
if (property.isNonEmpty() && property.isSingular()) {
body.addStatement(f("assertNonEmpty(%s);", name));
} else if (type != boolean.class && type != int.class) {
body.addStatement(f("assertNotNull(%s);", name));
}
}
body.addStatement(f("if (%s == this.%s) { return (%s) this; }", name, name, setter.getType()));
body.addStatement(f("notifyPropertyChange(ObservableProperty.%s, this.%s, %s);", observableName, name, name));
if (property.isNode()) {
body.addStatement(f("if (this.%s != null) this.%s.setParentNode(null);", name, name));
}
body.addStatement(f("this.%s = %s;", name, name));
if (property.isNode()) {
body.addStatement(f("setAsParentNodeOf(%s);", name));
}
if (property.getContainingNodeMetaModel().hasWildcard()) {
body.addStatement(f("return (T) this;"));
} else {
body.addStatement(f("return this;"));
}
replaceWhenSameSignature(nodeCoid, setter);
if (property.getContainingNodeMetaModel().hasWildcard()) {
annotateSuppressWarnings(setter);
}
}
private void generateGetter(BaseNodeMetaModel nodeMetaModel, ClassOrInterfaceDeclaration nodeCoid, PropertyMetaModel property) {
final MethodDeclaration getter = new MethodDeclaration(EnumSet.of(PUBLIC), parseType(property.getTypeNameForGetter()), property.getGetterMethodName());
final BlockStmt body = getter.getBody().get();
body.getStatements().clear();
if (property.isOptional()) {
body.addStatement(f("return Optional.ofNullable(%s);", property.getName()));
} else {
body.addStatement(f("return %s;", property.getName()));
}
replaceWhenSameSignature(nodeCoid, getter);
}
private void generateObservableProperty(EnumDeclaration observablePropertyEnum, PropertyMetaModel property, boolean derived) {
boolean isAttribute = !Node.class.isAssignableFrom(property.getType());
String name = property.getName();
String constantName = camelCaseToScreaming(name.startsWith("is") ? name.substring(2) : name);
EnumConstantDeclaration enumConstantDeclaration = observablePropertyEnum.addEnumConstant(constantName);
if (isAttribute) {
if (property.isEnumSet()) {
enumConstantDeclaration.addArgument("Type.MULTIPLE_ATTRIBUTE");
} else {
enumConstantDeclaration.addArgument("Type.SINGLE_ATTRIBUTE");
}
} else {
if (property.isNodeList()) {
enumConstantDeclaration.addArgument("Type.MULTIPLE_REFERENCE");
} else {
enumConstantDeclaration.addArgument("Type.SINGLE_REFERENCE");
}
}
if (derived) {
enumConstantDeclaration.addArgument("true");
}
}
@Override
protected void after() throws Exception {
CompilationUnit observablePropertyCu = sourceRoot.tryToParse("com.github.javaparser.ast.observer", "ObservableProperty.java").getResult().get();
EnumDeclaration observablePropertyEnum = observablePropertyCu.getEnumByName("ObservableProperty").get();
observablePropertyEnum.getEntries().clear();
List<String> observablePropertyNames = new LinkedList<>(declaredProperties.keySet());
observablePropertyNames.sort(String::compareTo);
for (String propName : observablePropertyNames) {
generateObservableProperty(observablePropertyEnum, declaredProperties.get(propName), false);
}
List<String> derivedPropertyNames = new LinkedList<>(derivedProperties.keySet());
derivedPropertyNames.sort(String::compareTo);
for (String propName : derivedPropertyNames) {
generateObservableProperty(observablePropertyEnum, derivedProperties.get(propName), true);
}
observablePropertyEnum.addEnumConstant("RANGE");
observablePropertyEnum.addEnumConstant("COMMENTED_NODE");
}
}
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