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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.codehaus.groovy.tools.groovydoc;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.codehaus.groovy.antlr.GroovySourceAST;
import org.codehaus.groovy.antlr.LineColumn;
import org.codehaus.groovy.antlr.SourceBuffer;
import org.codehaus.groovy.antlr.parser.GroovyTokenTypes;
import org.codehaus.groovy.antlr.treewalker.VisitorAdapter;
import org.codehaus.groovy.groovydoc.GroovyConstructorDoc;
import org.codehaus.groovy.groovydoc.GroovyFieldDoc;
import antlr.collections.AST;
public class SimpleGroovyClassDocAssembler extends VisitorAdapter {
private Stack stack;
private Map classDocs;
private SimpleGroovyClassDoc currentClassDoc; // todo - stack?
private SimpleGroovyConstructorDoc currentConstructorDoc; // todo - stack?
private SimpleGroovyMethodDoc currentMethodDoc; // todo - stack?
private SourceBuffer sourceBuffer;
private String packagePath;
private Pattern previousJavaDocCommentPattern;
private static final String FS = "/";
private List importedClassesAndPackages;
private List links;
public SimpleGroovyClassDocAssembler(String packagePath, String file, SourceBuffer sourceBuffer, List links) {
this.sourceBuffer = sourceBuffer;
this.packagePath = packagePath;
this.links = links;
stack = new Stack();
classDocs = new HashMap();
String className = file;
if (file != null) {
// todo: replace this simple idea of default class name
int idx = file.lastIndexOf(".");
className = file.substring(0,idx);
}
importedClassesAndPackages = new ArrayList();
importedClassesAndPackages.add(packagePath + "/*"); // everything in this package is automatically imported
importedClassesAndPackages.add("groovy/lang/*"); // default imports in Groovy, from org.codehaus.groovy.control.ResolveVisitor.DEFAULT_IMPORTS
importedClassesAndPackages.add("groovy/util/*"); // todo - non Groovy source files shouldn't import these, but let us import them for now, it won't hurt...
currentClassDoc = new SimpleGroovyClassDoc(importedClassesAndPackages, className, links);
currentClassDoc.setFullPathName(packagePath + FS + className);
classDocs.put(currentClassDoc.getFullPathName(),currentClassDoc);
previousJavaDocCommentPattern = Pattern.compile("(?s)/\\*\\*(.*?)\\*/");
}
public Map getGroovyClassDocs() {
postProcessClassDocs();
return classDocs;
}
// Step through ClassDocs and tie up loose ends
private void postProcessClassDocs() {
Iterator classDocIterator = classDocs.values().iterator();
while (classDocIterator.hasNext()) {
SimpleGroovyClassDoc classDoc = (SimpleGroovyClassDoc) classDocIterator.next();
// potentially add default constructor to class docs (but not interfaces)
if (classDoc.isClass()) { // todo Enums, @Interfaces etc
GroovyConstructorDoc[] constructors = classDoc.constructors();
if (constructors != null && constructors.length == 0) { // add default constructor to doc
// name of class for the constructor
GroovyConstructorDoc constructorDoc = new SimpleGroovyConstructorDoc(classDoc.name());
// don't forget to tell the class about this default constructor.
classDoc.add(constructorDoc);
}
}
}
}
public void visitInterfaceDef(GroovySourceAST t, int visit) {
currentClassDoc.setAsInterfaceDefinition();
}
public void visitImport(GroovySourceAST t, int visit) {
if (visit == OPENING_VISIT) {
GroovySourceAST child = t.childOfType(GroovyTokenTypes.DOT);
if (child == null) {
child = t.childOfType(GroovyTokenTypes.IDENT);
}
String importTextWithSlashesInsteadOfDots = recurseDownImportBranch(child);
importedClassesAndPackages.add(importTextWithSlashesInsteadOfDots);
}
}
public String recurseDownImportBranch(GroovySourceAST t) {
if (t != null) {
if (t.getType() == GroovyTokenTypes.DOT) {
GroovySourceAST firstChild = (GroovySourceAST) t.getFirstChild();
GroovySourceAST secondChild = (GroovySourceAST) firstChild.getNextSibling();
return (recurseDownImportBranch(firstChild) + "/" + recurseDownImportBranch(secondChild));
}
if (t.getType() == GroovyTokenTypes.IDENT) {
return t.getText();
}
if (t.getType() == GroovyTokenTypes.STAR) {
return t.getText();
}
}
return "";
}
public void visitExtendsClause(GroovySourceAST t,int visit) {
if (visit == OPENING_VISIT) {
GroovySourceAST superClassNode = t.childOfType(GroovyTokenTypes.IDENT);
if (superClassNode != null) {
String superClassName = superClassNode.getText();
currentClassDoc.setSuperClassName(superClassName); // un 'packaged' class name
}
}
}
public void visitClassDef(GroovySourceAST t,int visit) {
if (visit == OPENING_VISIT) {
// todo is this correct for java + groovy src?
String className = t.childOfType(GroovyTokenTypes.IDENT).getText();
currentClassDoc = (SimpleGroovyClassDoc) classDocs.get(packagePath + FS + className);
if (currentClassDoc == null) {
currentClassDoc = new SimpleGroovyClassDoc(importedClassesAndPackages, className, importedClassesAndPackages);
}
// comments
String commentText = getJavaDocCommentsBeforeNode(t);
currentClassDoc.setRawCommentText(commentText);
currentClassDoc.setFullPathName(packagePath + FS + currentClassDoc.name());
classDocs.put(currentClassDoc.getFullPathName(), currentClassDoc);
}
}
public void visitCtorIdent(GroovySourceAST t,int visit) {
if (visit == OPENING_VISIT) {
if (!insideAnonymousInnerClass()) {
// now... get relevant values from the AST
// name of class for the constructor
currentConstructorDoc = new SimpleGroovyConstructorDoc(currentClassDoc.name());
// comments
String commentText = getJavaDocCommentsBeforeNode(t);
currentConstructorDoc.setRawCommentText(commentText);
// modifiers
processModifiers(t, currentConstructorDoc);
addParametersTo(currentConstructorDoc, t, visit);
// don't forget to tell the class about this constructor.
currentClassDoc.add(currentConstructorDoc);
}
}
}
public void visitMethodDef(GroovySourceAST t, int visit) {
if (visit == OPENING_VISIT) {
if (!insideAnonymousInnerClass()) {
// init
// now... get relevant values from the AST
// method name
String methodName = t.childOfType(GroovyTokenTypes.IDENT).getText();
currentMethodDoc = new SimpleGroovyMethodDoc(methodName, links);
// comments
String commentText = getJavaDocCommentsBeforeNode(t);
currentMethodDoc.setRawCommentText(commentText);
// modifiers
processModifiers(t, currentMethodDoc);
// return type
String returnTypeName = getTypeNodeAsText(t.childOfType(GroovyTokenTypes.TYPE),"def");
SimpleGroovyType returnType = new SimpleGroovyType(returnTypeName); // todo !!!
currentMethodDoc.setReturnType(returnType);
addParametersTo(currentMethodDoc, t, visit);
// don't forget to tell the class about this method so carefully constructed.
currentClassDoc.add(currentMethodDoc);
}
}
}
public void visitVariableDef(GroovySourceAST t, int visit) {
if (visit == OPENING_VISIT) {
if (!insideAnonymousInnerClass()) {
GroovySourceAST parentNode = getParentNode();
// todo - what about fields in interfaces/enums etc
if (parentNode != null && parentNode.getType() == GroovyTokenTypes.OBJBLOCK) { // this should restrict us to just field definitions, and not local variable definitions
// field name
String fieldName = t.childOfType(GroovyTokenTypes.IDENT).getText();
SimpleGroovyFieldDoc currentFieldDoc = new SimpleGroovyFieldDoc(fieldName);
// comments - todo check this is doing the right thing for fields...
String commentText = getJavaDocCommentsBeforeNode(t);
currentFieldDoc.setRawCommentText(commentText);
// modifiers
processModifiers(t, currentFieldDoc);
// type
String typeName = getTypeNodeAsText(t.childOfType(GroovyTokenTypes.TYPE),"def");
SimpleGroovyType type = new SimpleGroovyType(typeName); // todo !!!
currentFieldDoc.setType(type);
// don't forget to tell the class about this field so carefully constructed.
currentClassDoc.add(currentFieldDoc);
}
}
}
}
private boolean insideAnonymousInnerClass() {
GroovySourceAST grandParentNode = getGrandParentNode();
if (grandParentNode != null && grandParentNode.getType() == GroovyTokenTypes.LITERAL_new) {
return true;
}
return false;
}
private void processModifiers(GroovySourceAST t,SimpleGroovyProgramElementDoc programElementDoc) {
GroovySourceAST modifiers = t.childOfType(GroovyTokenTypes.MODIFIERS);
if (modifiers != null) {
AST currentModifier = modifiers.getFirstChild();
boolean seenNonPublicVisibilityModifier = false;
while (currentModifier != null) {
int type = currentModifier.getType();
switch (type) {
case GroovyTokenTypes.LITERAL_protected:
case GroovyTokenTypes.LITERAL_private:
seenNonPublicVisibilityModifier = true;
break;
case GroovyTokenTypes.LITERAL_static:
programElementDoc.setStatic(true);
break;
}
currentModifier = currentModifier.getNextSibling();
}
if (!seenNonPublicVisibilityModifier) {
// in groovy (and java asts turned into groovy by Groovifier), methods are assumed public, unless informed otherwise
programElementDoc.setPublic(true);
}
}
}
// todo - If no comment before node, then get comment from same node on parent class - ouch!
private String getJavaDocCommentsBeforeNode(GroovySourceAST t) {
String returnValue = "";
String text = sourceBuffer.getSnippet(new LineColumn(1,1), new LineColumn(t.getLine(), t.getColumn()));
if (text != null) {
int openBlockIndex = text.lastIndexOf("{");
int closingBlockIndex = text.lastIndexOf("}");
int lastBlockIndex = Math.max(openBlockIndex, closingBlockIndex);
if (lastBlockIndex > 0) {
text = text.substring(lastBlockIndex);
}
Matcher m = previousJavaDocCommentPattern.matcher(text);
if (m.find()) {
returnValue = m.group(1);
}
}
return returnValue;
}
private String getText(GroovySourceAST node) {
String returnValue = null;
if (node != null) {
returnValue = node.getText();
}
return returnValue;
}
private String getTypeNodeAsText(GroovySourceAST typeNode, String defaultText) {
String returnValue = defaultText;
if (typeNode != null &&
typeNode.getType() == GroovyTokenTypes.TYPE &&
typeNode.getNumberOfChildren() > 0) {
GroovySourceAST child = (GroovySourceAST) typeNode.getFirstChild(); // assume type has only one child // todo type of "foo.bar.Wibble"
switch (child.getType()) {
// literals
case GroovyTokenTypes.LITERAL_boolean: returnValue = "boolean"; break;
case GroovyTokenTypes.LITERAL_byte: returnValue = "byte"; break;
case GroovyTokenTypes.LITERAL_char: returnValue = "char"; break;
// note: LITERAL_def never created
case GroovyTokenTypes.LITERAL_double: returnValue = "double"; break;
case GroovyTokenTypes.LITERAL_float: returnValue = "float"; break;
case GroovyTokenTypes.LITERAL_int: returnValue = "int"; break;
case GroovyTokenTypes.LITERAL_long: returnValue = "long"; break;
case GroovyTokenTypes.LITERAL_short: returnValue = "short"; break;
case GroovyTokenTypes.LITERAL_void: returnValue = "void"; break;
// identifiers
case GroovyTokenTypes.IDENT: returnValue = child.getText(); break;
}
}
return returnValue;
}
private void addParametersTo(SimpleGroovyExecutableMemberDoc executableMemberDoc, GroovySourceAST t,int visit) {
// parameters
GroovySourceAST parametersNode = t.childOfType(GroovyTokenTypes.PARAMETERS);
if (parametersNode != null && parametersNode.getNumberOfChildren() > 0) {
GroovySourceAST currentNode = (GroovySourceAST) parametersNode.getFirstChild();
while (currentNode != null) {
String parameterTypeName = getTypeNodeAsText(currentNode.childOfType(GroovyTokenTypes.TYPE),"def");
String parameterName = getText(currentNode.childOfType(GroovyTokenTypes.IDENT));
SimpleGroovyParameter parameter = new SimpleGroovyParameter(parameterName);
parameter.setTypeName(parameterTypeName);
executableMemberDoc.add(parameter);
currentNode = (GroovySourceAST)currentNode.getNextSibling();
}
}
}
public void push(GroovySourceAST t) {
stack.push(t);
}
public GroovySourceAST pop() {
if (!stack.empty()) {
return (GroovySourceAST) stack.pop();
}
return null;
}
private GroovySourceAST getParentNode() {
Object parentNode = null;
Object currentNode = stack.pop();
if (!stack.empty()) {
parentNode = stack.peek();
}
stack.push(currentNode);
return (GroovySourceAST) parentNode;
}
private GroovySourceAST getGrandParentNode() {
Object grandParentNode = null;
Object parentNode;
Object currentNode = stack.pop();
if (!stack.empty()) {
parentNode = stack.pop();
if (!stack.empty()) {
grandParentNode = stack.peek();
}
stack.push(parentNode);
}
stack.push(currentNode);
return (GroovySourceAST) grandParentNode;
}
}
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