lombok.ast.ASTPrinter Maven / Gradle / Ivy
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/*
* Copyright © 2011 Philipp Eichhorn
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.ast;
import java.io.PrintStream;
import java.util.*;
import java.util.Map.Entry;
import lombok.*;
/**
* For debugging purposes only
*
* Note: May not generate valid java.
*/
@RequiredArgsConstructor
public final class ASTPrinter implements ASTVisitor {
private void writeModifiers(final Set modifiers, final State state) {
if (modifiers.contains(Modifier.PUBLIC)) state.print("public ");
if (modifiers.contains(Modifier.PRIVATE)) state.print("private ");
if (modifiers.contains(Modifier.PROTECTED)) state.print("protected ");
if (modifiers.contains(Modifier.STATIC)) state.print("static ");
if (modifiers.contains(Modifier.FINAL)) state.print("final ");
if (modifiers.contains(Modifier.VOLATILE)) state.print("volatile ");
if (modifiers.contains(Modifier.TRANSIENT)) state.print("transient ");
}
@Override
public State visitAnnotation(final Annotation node, final State state) {
state.print("@").print(node.getType(), this);
if (!node.getValues().isEmpty()) {
if (node.getValues().containsKey("value") && node.getValues().size() == 1) {
node.getValues().get("value").accept(this, state);
} else {
Set>> entries = node.getValues().entrySet();
int i = 0;
int iend = entries.size() - 1;
for (Entry> entry : entries) {
state.print(entry.getKey()).print(" = ").print(entry.getValue(), this);
if (i == iend) break;
state.print(", ");
i++;
}
}
}
return state;
}
@Override
public State visitArgument(final Argument node, final State state) {
for (Annotation annotation : node.getAnnotations()) state.print(annotation, this).print(" ");
writeModifiers(node.getModifiers(), state);
return state.print(node.getType(), this).print(" ").print(node.getName());
}
@Override
public State visitArrayRef(final ArrayRef node, final State state) {
return state.print(node.getIndexed(), this).print("[").print(node.getIndex(), this).print("]");
}
@Override
public State visitAssignment(final Assignment node, final State state) {
return state.print(node.getLeft(), this).print(" = ").print(node.getRight(), this);
}
@Override
public State visitBinary(final Binary node, final State state) {
return state.print(node.getLeft(), this).print(" ").print(node.getOperator()).print(" ").print(node.getRight(), this);
}
@Override
public State visitBlock(final Block node, final State state) {
state.print("{\n");
final State indentedState = state.indent();
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
return state.printIndent().print("}");
}
@Override
public State visitBooleanLiteral(final BooleanLiteral node, final State state) {
return state.print(node.isTrue() ? "true" : "false");
}
@Override
public State visitBreak(final Break node, final State state) {
state.print("break");
if (node.getLabel() != null) state.print(" ").print(node.getLabel());
return state;
}
@Override
public State visitCall(final Call node, final State state) {
if (node.getReceiver() != null) {
state.print(node.getReceiver(), this).print(".");
}
if (!node.getTypeArgs().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeArgs().size() - 1; i <= iend; i++) {
state.print(node.getTypeArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(">");
}
state.print(node.getName()).print("(");
for (int i = 0, iend = node.getArgs().size() - 1; i <= iend; i++) {
state.print(node.getArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
return state.print(")");
}
@Override
public State visitCast(final Cast node, final State state) {
return state.print("(").print(node.getType(), this).print(") ").print(node.getExpression(), this);
}
@Override
public State visitCase(final Case node, final State state) {
state.printIndent();
if (node.getPattern() == null) {
state.print("default:\n");
} else {
state.print("case ").print(node.getPattern(), this).print(":\n");
}
final State indentedState = state.indent();
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
return state;
}
@Override
public State visitCharLiteral(final CharLiteral node, final State state) {
return state.print("'").print(node.getCharacter()).print("'");
}
@Override
public State visitClassDecl(final ClassDecl node, final State state) {
if (!node.isAnonymous()) {
for (Annotation annotation : node.getAnnotations()) {
state.print(annotation, this).print(" ");
}
writeModifiers(node.getModifiers(), state);
if (node.isInterface()) {
state.print("interface ");
} else {
state.print("class ");
}
state.print(node.getName());
if (!node.getTypeParameters().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeParameters().size() - 1; i <= iend; i++) {
state.print(node.getTypeParameters().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(">");
}
if (node.getSuperclass() != null) {
state.print(" extends ").print(node.getSuperclass(), this);
}
if (!node.getSuperInterfaces().isEmpty()) {
state.print(" implements ");
for (int i = 0, iend = node.getSuperInterfaces().size() - 1; i <= iend; i++) {
state.print(node.getSuperInterfaces().get(i), this);
if (i == iend) break;
state.print(", ");
}
}
state.print(" ");
}
state.print("{\n");
final State indentedState = state.indent();
for (FieldDecl field : node.getFields()) {
indentedState.printIndent().print(field, this).print(";\n");
}
for (AbstractMethodDecl> method : node.getMethods()) {
indentedState.print("\n").printIndent().print(method, this).print("\n");
}
for (ClassDecl memberType : node.getMemberTypes()) {
indentedState.print("\n").printIndent().print(memberType, this).print("\n");
}
return state.printIndent().print("}");
}
@Override
public State visitConstructorDecl(final ConstructorDecl node, final State state) {
for (Annotation annotation : node.getAnnotations()) {
state.print(annotation, this).print(" ");
}
writeModifiers(node.getModifiers(), state);
if (!node.getTypeParameters().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeParameters().size() - 1; i <= iend; i++) {
state.print(node.getTypeParameters().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print("> ");
}
state.print(node.getName()).print("(");
for (int i = 0, iend = node.getArguments().size() - 1; i <= iend; i++) {
state.print(node.getArguments().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(")");
if (!node.getThrownExceptions().isEmpty()) {
state.print(" throws ");
for (int i = 0, iend = node.getThrownExceptions().size() - 1; i <= iend; i++) {
state.print(node.getThrownExceptions().get(i), this);
if (i == iend) break;
state.print(", ");
}
}
state.print(" {\n");
final State indentedState = state.indent();
if (node.implicitSuper()) {
indentedState.printIndent().print("super();\n");
}
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
return state.printIndent().print("}");
}
@Override
public State visitContinue(final Continue node, final State state) {
state.print("continue");
if (node.getLabel() != null) state.print(" ").print(node.getLabel());
return state;
}
@Override
public State visitDoWhile(final DoWhile node, final State state) {
return state.print("do ").print(node.getAction(), this).print("\nwhile ( ").print(node.getCondition(), this).print(")");
}
@Override
public State visitEnumConstant(final EnumConstant node, final State state) {
state.print(node.getName()).print("(");
for (int i = 0, iend = node.getArgs().size() - 1; i <= iend; i++) {
state.print(node.getArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
return state.print(")");
}
@Override
public State visitFieldDecl(final FieldDecl node, final State state) {
for (Annotation annotation : node.getAnnotations()) {
state.print(annotation, this).print(" ");
}
writeModifiers(node.getModifiers(), state);
state.print(node.getType(), this).print(" ").print(node.getName());
if (node.getInitialization() != null) {
state.print(" = ").print(node.getInitialization(), this);
}
return state;
}
@Override
public State visitFieldRef(final FieldRef node, final State state) {
return state.print(node.getReceiver(), this).print(".").print(node.getName());
}
@Override
public State visitForeach(final Foreach node, final State state) {
return state.print("for (").print(node.getElementVariable(), this).print(" : ").print(node.getCollection(), this).print(") ").print(node.getAction(), this);
}
@Override
public State visitIf(final If node, final State state) {
state.print("if (").print(node.getCondition(), this).print(") ").print(node.getThenStatement(), this);
if (node.getElseStatement() != null) {
state.print("\n").printIndent().print("else ").print(node.getElseStatement(), this);
}
return state;
}
@Override
public State visitInitializer(Initializer node, State state) {
state.print("{\n");
final State indentedState = state.indent();
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
return state.printIndent().print("}\n");
}
@Override
public State visitInstanceOf(final InstanceOf node, final State state) {
return state.print(node.getExpression(), this).print(" instanceof ").print(node.getType(), this);
}
@Override
public State visitLocalDecl(final LocalDecl node, final State state) {
for (Annotation annotation : node.getAnnotations()) {
state.print(annotation, this).print(" ");
}
writeModifiers(node.getModifiers(), state);
state.print(node.getType(), this).print(" ").print(node.getName());
if (node.getInitialization() != null) {
state.print(" = ").print(node.getInitialization(), this);
}
return state;
}
@Override
public State visitMethodDecl(final MethodDecl node, final State state) {
for (Annotation annotation : node.getAnnotations()) {
state.print(annotation, this).print(" ");
}
writeModifiers(node.getModifiers(), state);
if (!node.getTypeParameters().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeParameters().size() - 1; i <= iend; i++) {
state.print(node.getTypeParameters().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print("> ");
}
state.print(node.getReturnType(), this).print(" ").print(node.getName()).print("(");
for (int i = 0, iend = node.getArguments().size() - 1; i <= iend; i++) {
state.print(node.getArguments().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(")");
if (!node.getThrownExceptions().isEmpty()) {
state.print(" throws ");
for (int i = 0, iend = node.getThrownExceptions().size() - 1; i <= iend; i++) {
state.print(node.getThrownExceptions().get(i), this);
if (i == iend) break;
state.print(", ");
}
}
if (node.noBody()) {
state.print(";\n");
} else {
state.print(" {\n");
final State indentedState = state.indent();
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
state.printIndent().print("}");
}
return state;
}
@Override
public State visitNameRef(final NameRef node, final State state) {
return state.print(node.getName());
}
@Override
public State visitNew(final New node, final State state) {
state.print("new ").print(node.getType(), this);
if (!node.getTypeArgs().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeArgs().size() - 1; i <= iend; i++) {
state.print(node.getTypeArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(">");
}
state.print("(");
for (int i = 0, iend = node.getArgs().size() - 1; i <= iend; i++) {
state.print(node.getArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(")");
if (node.getAnonymousType() != null) {
state.print(node.getAnonymousType(), this);
}
return state;
}
@Override
public State visitNewArray(final NewArray node, final State state) {
// TODO
return state;
}
@Override
public State visitNullLiteral(final NullLiteral node, final State state) {
return state.print("null");
}
@Override
public State visitNumberLiteral(final NumberLiteral node, final State state) {
final Number number = node.getNumber();
if (number instanceof Integer) {
return state.print(number.intValue());
} else if (number instanceof Long) {
return state.print(number.longValue()).print("L");
} else if (number instanceof Float) {
return state.print(number.floatValue()).print("f");
} else {
return state.print(number.doubleValue()).print("d");
}
}
@Override
public State visitReturn(final Return node, final State state) {
state.print("return");
if (node.getExpression() != null) {
state.print(" ").print(node.getExpression(), this);
}
return state;
}
@Override
public State visitReturnDefault(final ReturnDefault node, final State state) {
return state.print("return defaultValue");
}
@Override
public State visitStringLiteral(final StringLiteral node, final State state) {
return state.print("\"").print(node.getString()).print("\"");
}
@Override
public State visitSwitch(final Switch node, final State state) {
state.print("switch (").print(node.getExpression(), this).print(") {\n");
for (Case caze : node.getCases()) state.print(caze, this);
return state.printIndent().print("}");
}
@Override
public State visitSynchronized(final Synchronized node, final State state) {
state.print("synchronized (").print(node.getLock(), this).print(") {\n");
final State indentedState = state.indent();
for (Statement> statement : node.getStatements()) {
indentedState.printIndent().print(statement, this).print(";\n");
}
return state.printIndent().print("}\n");
}
@Override
public State visitThis(final This node, final State state) {
if (!node.isImplicit()) {
if (node.getType() != null) {
state.print(node.getType(), this).print(".");
}
state.print("this");
}
return state;
}
@Override
public State visitThrow(final Throw node, final State state) {
return state.print("throw ").print(node.getExpression(), this);
}
@Override
public State visitTry(final Try node, final State state) {
state.print("try ").print(node.getTryBlock(), this);
final Iterator iter = node.getCatchArguments().iterator();
for (lombok.ast.Block catchBlock : node.getCatchBlocks()) {
lombok.ast.Argument catchArgument = iter.next();
state.print("catch (").print(catchArgument, this).print(") ").print(catchBlock, this);
}
return state;
}
@Override
public State visitTypeParam(final TypeParam node, final State state) {
state.print(node.getName());
if (!node.getBounds().isEmpty()) {
state.print(" extends ");
for (int i = 0, iend = node.getBounds().size() - 1; i <= iend; i++) {
state.print(node.getBounds().get(i), this);
if (i == iend) break;
state.print(" & ");
}
}
return state;
}
@Override
public State visitTypeRef(final TypeRef node, final State state) {
state.print(node.getTypeName());
if (!node.getTypeArgs().isEmpty()) {
state.print("<");
for (int i = 0, iend = node.getTypeArgs().size() - 1; i <= iend; i++) {
state.print(node.getTypeArgs().get(i), this);
if (i == iend) break;
state.print(", ");
}
state.print(">");
}
for (int i = 0, iend = node.getDims(); i < iend; i++) state.print("[]");
return state;
}
@Override
public State visitUnary(final Unary node, final State state) {
return state.print(node.getOperator()).print(node.getExpression(), this);
}
@Override
public State visitWhile(final While node, final State state) {
return state.print("while (").print(node.getCondition(), this).print(") ").print(node.getAction(), this);
}
@Override
public State visitWildcard(final Wildcard node, final State state) {
state.print("?");
if (node.getBound() != null) {
state.print(" ").print(node.getBound().name().toLowerCase()).print(" ").print(node.getType(), this);
}
return state;
}
@Override
public State visitWrappedExpression(final WrappedExpression node, final State state) {
return state.print(node.getWrappedObject());
}
@Override
public State visitWrappedMethodDecl(final WrappedMethodDecl node, final State state) {
return state.print(node.getWrappedObject());
}
@Override
public State visitWrappedStatement(final WrappedStatement node, final State state) {
return state.print(node.getWrappedObject());
}
@Override
public State visitWrappedTypeRef(final WrappedTypeRef node, final State state) {
return state.print(node.getWrappedObject());
}
@RequiredArgsConstructor
public static class State {
private final PrintStream out;
private final String indent;
private final int depth;
public State(final PrintStream out) {
this(out, " ", 0);
}
public State(final PrintStream out, final String indent) {
this(out, indent, 0);
}
public State indent() {
return new State(out, indent, depth + 1);
}
public State printIndent() {
for (int i = 0; i < depth; i++) {
out.append(indent);
}
return this;
}
public State print(final CharSequence csq) {
out.append(csq);
return this;
}
public State print(final Object o) {
return print(o.toString());
}
public State print(final Node> node, final ASTPrinter printer) {
return node.accept(printer, this);
}
}
}