refactor: moves JDTTreeBuilder inner classes into top-level classes, …

…adds one helper class with static methods.

src/main/java/spoon/support/compiler/jdt/ASTPair.java

@@ -0,0 +1,37 @@
+/**
+ * Copyright (C) 2006-2016 INRIA and contributors
+ * Spoon - http://spoon.gforge.inria.fr/
+ *
+ * This software is governed by the CeCILL-C License under French law and
+ * abiding by the rules of distribution of free software. You can use, modify
+ * and/or redistribute the software under the terms of the CeCILL-C license as
+ * circulated by CEA, CNRS and INRIA at http://www.cecill.info.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL-C License for more details.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL-C license and that you accept its terms.
+ */
+package spoon.support.compiler.jdt;
+
+import org.eclipse.jdt.internal.compiler.ast.ASTNode;
+import spoon.reflect.declaration.CtElement;
+
+public class ASTPair {
+ public CtElement element;
+
+ public ASTNode node;
+
+ public ASTPair(CtElement element, ASTNode node) {
+ super();
+ this.element = element;
+ this.node = node;
+ }
+
+ @Override
+ public String toString() {
+ return element.getClass().getSimpleName() + "-" + node.getClass().getSimpleName();
+ }
+}

src/main/java/spoon/support/compiler/jdt/ContextBuilder.java

@@ -0,0 +1,194 @@
+/**
+ * Copyright (C) 2006-2016 INRIA and contributors
+ * Spoon - http://spoon.gforge.inria.fr/
+ *
+ * This software is governed by the CeCILL-C License under French law and
+ * abiding by the rules of distribution of free software. You can use, modify
+ * and/or redistribute the software under the terms of the CeCILL-C license as
+ * circulated by CEA, CNRS and INRIA at http://www.cecill.info.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL-C License for more details.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL-C license and that you accept its terms.
+ */
+package spoon.support.compiler.jdt;
+
+import org.eclipse.jdt.internal.compiler.ast.ASTNode;
+import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
+import org.eclipse.jdt.internal.compiler.ast.Expression;
+import spoon.reflect.code.CtCatchVariable;
+import spoon.reflect.code.CtExpression;
+import spoon.reflect.code.CtLocalVariable;
+import spoon.reflect.code.CtStatement;
+import spoon.reflect.code.CtTargetedExpression;
+import spoon.reflect.code.CtTry;
+import spoon.reflect.declaration.CtElement;
+import spoon.reflect.declaration.CtTypedElement;
+import spoon.reflect.reference.CtTypeReference;
+import spoon.reflect.visitor.EarlyTerminatingScanner;
+
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Deque;
+import java.util.List;
+
+import static spoon.reflect.ModelElementContainerDefaultCapacities.CASTS_CONTAINER_DEFAULT_CAPACITY;
+
+public class ContextBuilder {
+
+ Deque<String> annotationValueName = new ArrayDeque<>();
+
+ Deque<CtElement> arguments = new ArrayDeque<>();
+
+ List<CtTypeReference<?>> casts = new ArrayList<>(CASTS_CONTAINER_DEFAULT_CAPACITY);
+
+ CompilationUnitDeclaration compilationunitdeclaration;
+
+ Deque<CtTry> finallyzer = new ArrayDeque<>();
+
+ boolean forinit = false;
+
+ boolean forupdate = false;
+
+ boolean assigned = false;
+
+ Deque<String> label = new ArrayDeque<>();
+
+ boolean selector = false;
+
+ boolean isGenericTypeExplicit = true;
+
+ boolean isLambdaParameterImplicitlyTyped = true;
+
+ boolean ignoreComputeImports = false;
+
+ boolean isTypeParameter = false;
+
+ /**
+ * Stack of all parents elements
+ */
+ Deque<ASTPair> stack = new ArrayDeque<>();
+
+ Deque<CtTargetedExpression<?, ?>> target = new ArrayDeque<>();
+
+ private final JDTTreeBuilder jdtTreeBuilder;
+
+ ContextBuilder(JDTTreeBuilder jdtTreeBuilder) {
+ this.jdtTreeBuilder = jdtTreeBuilder;
+ }
+
+ @SuppressWarnings("unchecked")
+ void enter(CtElement e, ASTNode node) {
+ stack.push(new ASTPair(e, node));
+ // aststack.push(node);
+ if (compilationunitdeclaration != null) {
+ e.setPosition(this.jdtTreeBuilder.getPositionBuilder().buildPositionCtElement(e, node));
+ }
+
+ ASTPair pair = stack.peek();
+ CtElement current = pair.element;
+
+ if (current instanceof CtExpression) {
+ while (!casts.isEmpty()) {
+ ((CtExpression<?>) current).addTypeCast(casts.remove(0));
+ }
+ }
+ if (current instanceof CtStatement && !this.label.isEmpty()) {
+ ((CtStatement) current).setLabel(this.label.pop());
+ }
+
+ try {
+ if (e instanceof CtTypedElement && node instanceof Expression) {
+ if (((CtTypedElement<?>) e).getType() == null) {
+ ((CtTypedElement<Object>) e).setType(this.jdtTreeBuilder.getReferencesBuilder().getTypeReference(((Expression) node).resolvedType));
+ }
+ }
+ } catch (UnsupportedOperationException ignore) {
+ // For some element, we throw an UnsupportedOperationException when we call setType().
+ }
+
+ }
+
+ void exit(ASTNode node) {
+ ASTPair pair = stack.pop();
+ if (pair.node != node) {
+ throw new RuntimeException("Inconsistent Stack " + node + "\n" + pair.node);
+ }
+ CtElement current = pair.element;
+ if (!stack.isEmpty()) {
+ this.jdtTreeBuilder.getExiter().setChild(current);
+ this.jdtTreeBuilder.getExiter().scan(stack.peek().element);
+ }
+ }
+
+ <T> CtLocalVariable<T> getLocalVariableDeclaration(final String name) {
+ for (ASTPair astPair : this.stack) {
+ // TODO check if the variable is visible from here
+
+ EarlyTerminatingScanner<CtLocalVariable<?>> scanner = new EarlyTerminatingScanner<CtLocalVariable<?>>() {
+ @Override
+ public <T> void visitCtLocalVariable(CtLocalVariable<T> localVariable) {
+ if (name.equals(localVariable.getSimpleName())) {
+ setResult(localVariable);
+ terminate();
+ return;
+ }
+ super.visitCtLocalVariable(localVariable);
+ }
+ };
+ astPair.element.accept(scanner);
+ CtLocalVariable<T> var = (CtLocalVariable<T>) scanner.getResult();
+ if (var != null) {
+ return var;
+ }
+ }
+ // note: this happens when using the new try(vardelc) structure
+ this.jdtTreeBuilder.getLogger().error("could not find declaration for local variable " + name + " at " + this.stack.peek().element.getPosition());
+
+ return null;
+ }
+
+ <T> CtCatchVariable<T> getCatchVariableDeclaration(final String name) {
+ for (ASTPair astPair : this.stack) {
+ EarlyTerminatingScanner<CtCatchVariable<?>> scanner = new EarlyTerminatingScanner<CtCatchVariable<?>>() {
+ @Override
+ public <T> void visitCtCatchVariable(CtCatchVariable<T> catchVariable) {
+ if (name.equals(catchVariable.getSimpleName())) {
+ setResult(catchVariable);
+ terminate();
+ return;
+ }
+ super.visitCtCatchVariable(catchVariable);
+ }
+ };
+ astPair.element.accept(scanner);
+
+ CtCatchVariable<T> var = (CtCatchVariable<T>) scanner.getResult();
+ if (var != null) {
+ return null;
+ }
+ }
+ // note: this happens when using the new try(vardelc) structure
+ this.jdtTreeBuilder.getLogger().error("could not find declaration for catch variable " + name + " at " + this.stack.peek().element.getPosition());
+
+ return null;
+ }
+
+ boolean isArgument(CtElement e) {
+ return arguments.size() > 0 && arguments.peek() == e;
+ }
+
+ void popArgument(CtElement e) {
+ if (arguments.pop() != e) {
+ throw new RuntimeException("Unconsistant stack");
+ }
+ }
+
+ void pushArgument(CtElement e) {
+ arguments.push(e);
+ }
+
+}