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package com.github.javaparser.generator.metamodel;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.body.*;
import com.github.javaparser.ast.stmt.Statement;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.utils.SourceRoot;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import static com.github.javaparser.JavaParser.*;
import static com.github.javaparser.ast.Modifier.*;
import static com.github.javaparser.ast.Modifier.FINAL;
import static com.github.javaparser.ast.Modifier.PUBLIC;
import static com.github.javaparser.generator.metamodel.MetaModelGenerator.*;
import static com.github.javaparser.utils.CodeGenerationUtils.*;
import static com.github.javaparser.utils.Utils.decapitalize;
public class NodeMetaModelGenerator {
private final InitializePropertyMetaModelsStatementsGenerator initializePropertyMetaModelsStatementsGenerator = new InitializePropertyMetaModelsStatementsGenerator();
private final InitializeConstructorParametersStatementsGenerator initializeConstructorParametersStatementsGenerator = new InitializeConstructorParametersStatementsGenerator();
public void generate(Class<? extends Node> nodeClass, ClassOrInterfaceDeclaration metaModelCoid, NodeList<Statement> initializeNodeMetaModelsStatements, NodeList<Statement> initializePropertyMetaModelsStatements, NodeList<Statement> initializeConstructorParametersStatements, SourceRoot sourceRoot) throws NoSuchMethodException {
String className = nodeMetaModelName(nodeClass);
String nodeMetaModelFieldName = decapitalize(className);
metaModelCoid.getFieldByName(nodeMetaModelFieldName).ifPresent(Node::remove);
FieldDeclaration nodeField = metaModelCoid.addField(className, nodeMetaModelFieldName, PUBLIC, STATIC, FINAL);
Class<?> superclass = nodeClass.getSuperclass();
final String superClassMetaModel = optionalOf(decapitalize(nodeMetaModelName(superclass)), isNode(superclass));
nodeField.getVariable(0).setInitializer(parseExpression(f("new %s(%s)", className, superClassMetaModel)));
initializeNodeMetaModelsStatements.add(parseStatement(f("nodeMetaModels.add(%s);", nodeMetaModelFieldName)));
CompilationUnit classMetaModelJavaFile = new CompilationUnit(METAMODEL_PACKAGE);
classMetaModelJavaFile.addImport("java.util.Optional");
sourceRoot.add(METAMODEL_PACKAGE, className + ".java", classMetaModelJavaFile);
ClassOrInterfaceDeclaration nodeMetaModelClass = classMetaModelJavaFile.addClass(className, PUBLIC);
nodeMetaModelClass.addExtendedType(new ClassOrInterfaceType(NODE_META_MODEL));
AstTypeAnalysis typeAnalysis = new AstTypeAnalysis(nodeClass);
ConstructorDeclaration classMMConstructor = nodeMetaModelClass
.addConstructor()
.addParameter("Optional<" + NODE_META_MODEL + ">", "super" + NODE_META_MODEL);
classMMConstructor
.getBody()
.addStatement(parseExplicitConstructorInvocationStmt(f("super(super%s, %s.class, \"%s\", \"%s\", %s, %s);",
NODE_META_MODEL,
nodeClass.getName(),
nodeClass.getSimpleName(),
nodeClass.getPackage().getName(),
typeAnalysis.isAbstract,
typeAnalysis.isSelfType)));
List<Field> fields = new ArrayList<>(Arrays.asList(nodeClass.getDeclaredFields()));
fields.sort(Comparator.comparing(Field::getName));
for (Field field : fields) {
if (fieldShouldBeIgnored(field)) {
continue;
}
initializePropertyMetaModelsStatementsGenerator.generate(nodeClass, field, nodeMetaModelClass, nodeMetaModelFieldName, initializePropertyMetaModelsStatements);
}
if (!typeAnalysis.isAbstract) {
initializeConstructorParametersStatementsGenerator.generate(nodeClass, initializeConstructorParametersStatements);
}
moveStaticInitializeToTheEndOfTheClassBecauseWeNeedTheFieldsToInitializeFirst(metaModelCoid);
}
private void moveStaticInitializeToTheEndOfTheClassBecauseWeNeedTheFieldsToInitializeFirst(ClassOrInterfaceDeclaration metaModelCoid) {
for (BodyDeclaration<?> m : metaModelCoid.getMembers()){
if(m instanceof InitializerDeclaration){
m.remove();
metaModelCoid.addMember(m);
return;
}
}
}
private boolean fieldShouldBeIgnored(Field reflectionField) {
if (java.lang.reflect.Modifier.isStatic(reflectionField.getModifiers())) {
return true;
}
String name = reflectionField.getName();
switch (name) {
case "parentNode":
case "observers":
case "innerList":
case "data":
case "range":
case "childNodes":
case "commentedNode":
case "orphanComments":
return true;
}
return false;
}
}
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