1 files changed, 145 insertions, 0 deletions
diff --git a/javaparser-core-generators/src/main/java/com/github/javaparser/generator/core/node/PropertyGenerator.java b/javaparser-core-generators/src/main/java/com/github/javaparser/generator/core/node/PropertyGenerator.java
new file mode 100644
index 000000000..9ac69edc9
--- /dev/null
+++ b/javaparser-core-generators/src/main/java/com/github/javaparser/generator/core/node/PropertyGenerator.java
@@ -0,0 +1,145 @@
+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");
+    }
+}