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package com.carma.swagger.doclet.parser;
import static com.google.common.collect.Collections2.filter;
import static com.google.common.collect.Lists.transform;
import static java.util.Arrays.asList;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.carma.swagger.doclet.DocletOptions;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.sun.javadoc.AnnotationDesc;
import com.sun.javadoc.ClassDoc;
import com.sun.javadoc.FieldDoc;
import com.sun.javadoc.MethodDoc;
import com.sun.javadoc.Parameter;
import com.sun.javadoc.ParameterizedType;
import com.sun.javadoc.ProgramElementDoc;
import com.sun.javadoc.SeeTag;
import com.sun.javadoc.Tag;
import com.sun.javadoc.Type;
import com.sun.javadoc.TypeVariable;
/**
* The ParserHelper represents a helper class for the parsers
* @version $Id$
*/
public class ParserHelper {
private static final String JAX_RS_PATH_PARAM = "javax.ws.rs.PathParam";
private static final String JAX_RS_QUERY_PARAM = "javax.ws.rs.QueryParam";
private static final String JAX_RS_HEADER_PARAM = "javax.ws.rs.HeaderParam";
private static final String JAX_RS_FORM_PARAM = "javax.ws.rs.FormParam";
/**
* This is a set of the FQN of the various JAXRS parameter annotations
*/
public static final Set JAXRS_PARAM_ANNOTATIONS = new HashSet();
static {
// TODO support cookie and matrix params...
JAXRS_PARAM_ANNOTATIONS.add(JAX_RS_PATH_PARAM);
JAXRS_PARAM_ANNOTATIONS.add(JAX_RS_QUERY_PARAM);
JAXRS_PARAM_ANNOTATIONS.add(JAX_RS_HEADER_PARAM);
JAXRS_PARAM_ANNOTATIONS.add(JAX_RS_FORM_PARAM);
}
private static final String JAX_RS_ANNOTATION_PACKAGE = "javax.ws.rs";
private static final String JAX_RS_PATH = "javax.ws.rs.Path";
private static final String JAX_RS_CONSUMES = "javax.ws.rs.Consumes";
private static final String JAX_RS_PRODUCES = "javax.ws.rs.Produces";
private static final String JAX_RS_DEFAULT_VALUE = "javax.ws.rs.DefaultValue";
@SuppressWarnings("serial")
static final List PRIMITIVES = new ArrayList() {
{
add("byte");
add("boolean");
add("int");
add("integer");
add("long");
add("float");
add("double");
add("short");
add("char");
add("string");
add("date");
add("number");
}
};
/**
* This gets the allowable values from an enum class doc or null if the classdoc does not
* represent an enum
* @param typeClassDoc the class doc of the enum class to get the allowable values of
* @return The list of allowable values or null if this is not an enum
*/
public static List getAllowableValues(ClassDoc typeClassDoc) {
// TODO use translator to support @XmlEnum values...
List allowableValues = null;
if (typeClassDoc != null && typeClassDoc.isEnum()) {
allowableValues = transform(asList(typeClassDoc.enumConstants()), new Function() {
public String apply(FieldDoc input) {
if (input == null) {
return null;
}
return input.name();
}
});
}
return allowableValues;
}
/**
* This gets whether a class doc has an ancestor class that can be processed, e.g.
* if its parent is java.lang.Object it returns false.
* @param classDoc The class doc
* @return True if the class doc class has a parent class that is not java.lang.Object.
*/
public static boolean hasAncestor(ClassDoc classDoc) {
if (classDoc == null) {
return false;
}
// ignore parent object class
String qName = classDoc.qualifiedName();
boolean isBaseObject = qName.equals("java.lang.Object");
return !isBaseObject;
}
/**
* This gets the default value of the given parameter
* @param param The parameter
* @param options The doclet options
* @return The default value or null if it has no default
*/
public static String getDefaultValue(Parameter param, DocletOptions options) {
AnnotationParser p = new AnnotationParser(param, options);
String value = p.getAnnotationValue(JAX_RS_DEFAULT_VALUE, "value");
return value;
}
/**
* This parses the path from the annotations of a method or class
* @param doc The method or class
* @param options The doclet options
* @return The path or null if no path related annotations were present
*/
public static String parsePath(com.sun.javadoc.ProgramElementDoc doc, DocletOptions options) {
AnnotationParser p = new AnnotationParser(doc, options);
String path = p.getAnnotationValue(JAX_RS_PATH, "value");
if (path != null) {
if (path.endsWith("/")) {
path = path.substring(0, path.length() - 1);
}
if (!path.isEmpty() && !path.startsWith("/")) {
path = "/" + path;
}
return path;
}
return null;
}
/**
* This verifies that the given numeric values are valid for the given data type and format and returns the comparison.
* If not valid it raises an exception. It ignores null/empty values.
* @param context Additional description for contextualizing the error message
* @param type The data type as per json schema
* @param format The data format
* @param value1 The first value to check
* @param value2 The 2nd value to check
* @throws IllegalStateException if the value is invalid.
* @return null if either value is null/empty, otherwise -1,0,1 as per standard java compare behaviour.
*/
public static Integer compareNumericValues(String context, String type, String format, String value1, String value2) {
if (value1 == null || value1.trim().isEmpty() || value2 == null || value2.trim().isEmpty()) {
return null;
}
Number val1 = verifyNumericValue(context, type, format, value1);
Number val2 = verifyNumericValue(context, type, format, value1);
return Double.valueOf(val1.doubleValue()).compareTo(val2.doubleValue());
}
/**
* This verifies that the given value is valid for the given data type and format for use as a numeric value
* which means it must be integer or number type.
* If not valid it raises an exception. It ignores null/empty values.
* @param context Additional description for contextualizing the error message
* @param type The data type as per json schema
* @param format The data format
* @param value The value to check
* @throws IllegalStateException if the value is invalid.
* @return The value as a number suitable for the given type and format
*/
public static Number verifyNumericValue(String context, String type, String format, String value) {
if (value == null || value.trim().isEmpty()) {
return null;
}
try {
if (type.equals("integer")) {
if (format.equals("int32")) {
return Integer.parseInt(value);
} else {
return Long.parseLong(value);
}
} else if (type.equals("number")) {
if (format.equals("double")) {
return Double.parseDouble(value);
} else {
return Float.parseFloat(value);
}
} else if (format != null && format.equals("byte")) {
return Byte.parseByte(value);
}
} catch (NumberFormatException nfe) {
throw new IllegalStateException("The value was not valid for the type: " + type + " and format: " + format + context, nfe);
}
throw new IllegalStateException("Min/Max values are not allowed for the type: " + type + " and format: " + format + context);
}
/**
* This verifies that the given value is valid for the given data type and format.
* If not valid it raises an exception. It ignores null/empty values.
* @param context Additional description for contextualizing the error message
* @param type The data type as per json schema
* @param format The data format
* @param value The value to check
* @throws IllegalStateException if the value is invalid.
*/
public static void verifyValue(String context, String type, String format, String value) {
if (value == null || value.trim().isEmpty()) {
return;
}
try {
if (type.equals("integer")) {
if (format.equals("int32")) {
Integer.parseInt(value);
} else {
Long.parseLong(value);
}
} else if (type.equals("number")) {
if (format.equals("double")) {
Double.parseDouble(value);
} else {
Float.parseFloat(value);
}
} else if (format != null && format.equals("byte")) {
Byte.parseByte(value);
} else if (type.equals("boolean")) {
if (!value.equalsIgnoreCase("true") && !value.equals("false")) {
throw new IllegalStateException("The value was not valid for the type: " + type + " and format: " + format + context);
}
}
// TODO support date and date time
} catch (NumberFormatException nfe) {
throw new IllegalStateException("The value was not valid for the type: " + type + " and format: " + format + context, nfe);
}
}
/**
* This gets the qualified type name of a javadoc type,
* It adds [] onto any array types
* @param type The type
* @return The qualified type name
*/
public static String getQualifiedTypeName(Type type) {
String qName = type.qualifiedTypeName();
// handle arrays
String dimension = type.dimension();
if (dimension != null && "[]".equals(dimension)) {
qName = qName + "[]";
}
return qName;
}
/**
* Determines the String representation of the given FQN.
* This includes the type as the first item and the format as the 2nd.
* Common name Swagger spec 1.2
* integer integer, int32
* long integer, int64
* float number, float
* double number, double
* string string
* byte string, byte
* boolean boolean
* date string, date
* dateTime string, date-time
* @param javaType The java type to get the swagger type and format of
* @param options The doclet options
* @return An array with the type as the first item and the format as the 2nd.
*/
public static String[] typeOf(String javaType, DocletOptions options) {
if (javaType.toLowerCase().equals("byte[]")) {
return new String[] { "ByteArray", null };
} else if (javaType.toLowerCase().equals("byte") || javaType.equalsIgnoreCase("java.lang.Byte")) {
return new String[] { "string", "byte" };
} else if (javaType.toLowerCase().equals("int") || javaType.toLowerCase().equals("integer") || javaType.equalsIgnoreCase("java.lang.Integer")) {
return new String[] { "integer", "int32" };
} else if (javaType.toLowerCase().equals("short") || javaType.equalsIgnoreCase("java.lang.Short")) {
return new String[] { "integer", "int32" };
} else if (javaType.toLowerCase().equals("long") || javaType.equalsIgnoreCase("java.lang.Long")) {
return new String[] { "integer", "int64" };
} else if (javaType.toLowerCase().equals("float") || javaType.equalsIgnoreCase("java.lang.Float")) {
return new String[] { "number", "float" };
} else if (javaType.toLowerCase().equals("double") || javaType.equalsIgnoreCase("java.lang.Double")) {
return new String[] { "number", "double" };
} else if (javaType.toLowerCase().equals("string") || javaType.equalsIgnoreCase("java.lang.String")) {
return new String[] { "string", null };
} else if (javaType.toLowerCase().equals("char") || javaType.equalsIgnoreCase("java.lang.Character")) {
return new String[] { "string", null };
} else if (javaType.toLowerCase().equals("boolean") || javaType.equalsIgnoreCase("java.lang.Boolean")) {
return new String[] { "boolean", null };
} else if (javaType.toLowerCase().equals("date") || javaType.equalsIgnoreCase("java.util.Date")) {
return new String[] { "string", "date-time" };
} else if (isCollection(javaType)
&& (javaType.toLowerCase().endsWith("list") || javaType.toLowerCase().endsWith("array") || javaType.toLowerCase().endsWith("collection"))) {
return new String[] { "array", null };
} else if (isSet(javaType)) {
return new String[] { "array", null };
} else if (javaType.equalsIgnoreCase("java.io.File")) {
// special handling of files, the datatype File is reserved for multipart
return new String[] { "JavaFile", null };
} else {
// see if its a special string type
for (String prefix : options.getStringTypePrefixes()) {
if (javaType.startsWith(prefix)) {
return new String[] { "string", null };
}
}
// must be a complex type, return class name
int i = javaType.lastIndexOf(".");
if (i >= 0) {
return new String[] { javaType.substring(i + 1), null };
} else {
return new String[] { javaType, null };
}
}
}
/**
* Determines the String representation of the object Type.
* This includes the type as the first item and the format as the 2nd.
* Common name Swagger spec 1.2
* integer integer, int32
* long integer, int64
* float number, float
* double number, double
* string string
* byte string, byte
* boolean boolean
* date string, date
* dateTime string, date-time
* @param type The java type to get the swagger type and format of
* @param options The doclet options
* @return An array with the type as the first item and the format as the 2nd.
*/
public static String[] typeOf(Type type, DocletOptions options) {
String javaType = getQualifiedTypeName(type);
return typeOf(javaType, options);
}
/**
* This gets the type that a container holds
* @param type The raw type like Collection
* @param varsToTypes A map of variables to types for parameterized types, optional if null parameterized types
* will not be handled
* @return The container type or null if not a collection
*/
public static Type getContainerType(Type type, Map varsToTypes) {
Type result = null;
ParameterizedType pt = type.asParameterizedType();
if (pt != null && ParserHelper.isCollection(type.qualifiedTypeName())) {
Type[] typeArgs = pt.typeArguments();
if (typeArgs != null && typeArgs.length > 0) {
result = typeArgs[0];
}
}
// if its a ref to a param type replace with the type impl
if (result != null) {
Type paramType = getVarType(result.asTypeVariable(), varsToTypes);
if (paramType != null) {
return paramType;
}
}
return result;
}
/**
* This finds a variable type and returns its impl from the given map
* @param var The variable type to find
* @param varsToTypes The map of variables to types
* @return The result.
*/
public static Type getVarType(TypeVariable var, Map varsToTypes) {
Type res = null;
if (var != null && varsToTypes != null) {
Type type = varsToTypes.get(var.qualifiedTypeName());
while (type != null) {
res = type;
type = varsToTypes.get(type.qualifiedTypeName());
}
}
return res;
}
/**
* This gets whether the given type is a Set
* @param javaType The java type
* @return True if this is a Set
*/
public static boolean isSet(String javaType) {
try {
return java.util.Set.class.isAssignableFrom(Class.forName(javaType));
} catch (ClassNotFoundException ex) {
return false;
}
}
/**
* This gets whether the given type is a Collection
* @param javaType The java type
* @return True if this is a collection
*/
public static boolean isCollection(String javaType) {
try {
return java.util.Collection.class.isAssignableFrom(Class.forName(javaType));
} catch (ClassNotFoundException ex) {
return false;
}
}
/**
* This gets whether the given type is a Map
* @param javaType The java type
* @return True if this is a map
*/
public static boolean isMap(String javaType) {
try {
return java.util.Map.class.isAssignableFrom(Class.forName(javaType));
} catch (ClassNotFoundException ex) {
return false;
}
}
/**
* This gets whether the given parameter is a File data type
* @param parameter The parameter
* @param options The doclet options
* @return True if the parameter is a File data type
*/
public static boolean isFileParameterDataType(Parameter parameter, DocletOptions options) {
AnnotationParser p = new AnnotationParser(parameter, options);
for (String fileAnnotation : options.getFileParameterAnnotations()) {
if (p.isAnnotatedBy(fileAnnotation)) {
return true;
}
}
String qName = ParserHelper.getQualifiedTypeName(parameter.type());
for (String fileType : options.getFileParameterTypes()) {
if (qName.equals(fileType)) {
return true;
}
}
return false;
}
/**
* This gets (for composite param fields) whether the given parameter is a File data type
* @param paramMember The field or method that is the parameter
* @param type The type of the parameter
* @param options The doclet options
* @return True if the parameter is a File data type
*/
private static boolean isFileParameterDataType(ProgramElementDoc paramMember, Type type, DocletOptions options) {
AnnotationParser p = new AnnotationParser(paramMember, options);
for (String fileAnnotation : options.getFileParameterAnnotations()) {
if (p.isAnnotatedBy(fileAnnotation)) {
return true;
}
}
String qName = ParserHelper.getQualifiedTypeName(type);
for (String fileType : options.getFileParameterTypes()) {
if (qName.equals(fileType)) {
return true;
}
}
return false;
}
/**
* Determines the string representation of the parameter type for composite types.
* @param returnDefault Whether to return a default value if there is no specific jaxrs param annotation
* @param multipart Whether the method the parameter is for consumes multipart
* @param paramMember The field or method that is the parameter
* @param type The type of the parameter
* @param options The doclet options
* @return The type of parameter, one of path, header, query, form or body.
*/
public static String paramTypeOf(boolean returnDefault, boolean multipart, ProgramElementDoc paramMember, Type type, DocletOptions options) {
AnnotationParser p = new AnnotationParser(paramMember, options);
if (p.isAnnotatedBy(JAX_RS_PATH_PARAM)) {
return "path";
} else if (p.isAnnotatedBy(JAX_RS_HEADER_PARAM)) {
return "header";
} else if (p.isAnnotatedBy(JAX_RS_QUERY_PARAM)) {
return "query";
} else if (p.isAnnotatedBy(JAX_RS_FORM_PARAM)) {
return "form";
}
String qName = getQualifiedTypeName(type);
// bean param and other composites
for (String compositeAnnotation : options.getCompositeParamAnnotations()) {
if (p.isAnnotatedBy(compositeAnnotation)) {
return "composite";
}
}
for (String compositeType : options.getCompositeParamTypes()) {
if (qName.equals(compositeType)) {
return "composite";
}
}
// look for form parameter types
for (String formAnnotation : options.getFormParameterAnnotations()) {
if (p.isAnnotatedBy(formAnnotation)) {
return "form";
}
}
for (String formType : options.getFormParameterTypes()) {
if (qName.equals(formType)) {
return "form";
}
}
// look for File data types, for multipart these are always form parameter types
// as per the swagger 1.2 spec
if (multipart && isFileParameterDataType(paramMember, type, options)) {
return "form";
}
if (!returnDefault) {
return null;
}
// otherwise default to body
return "body";
}
/**
* Determines the string representation of the parameter type.
* @param multipart Whether the method the parameter is for consumes multipart
* @param parameter The parameter to get the type of
* @param options The doclet options
* @return The type of parameter, one of path, header, query, form or body.
*/
public static String paramTypeOf(boolean multipart, Parameter parameter, DocletOptions options) {
AnnotationParser p = new AnnotationParser(parameter, options);
if (p.isAnnotatedBy(JAX_RS_PATH_PARAM)) {
return "path";
} else if (p.isAnnotatedBy(JAX_RS_HEADER_PARAM)) {
return "header";
} else if (p.isAnnotatedBy(JAX_RS_QUERY_PARAM)) {
return "query";
} else if (p.isAnnotatedBy(JAX_RS_FORM_PARAM)) {
return "form";
}
String qName = getQualifiedTypeName(parameter.type());
// bean param and other composites
for (String compositeAnnotation : options.getCompositeParamAnnotations()) {
if (p.isAnnotatedBy(compositeAnnotation)) {
return "composite";
}
}
for (String compositeType : options.getCompositeParamTypes()) {
if (qName.equals(compositeType)) {
return "composite";
}
}
// look for form parameter types
for (String formAnnotation : options.getFormParameterAnnotations()) {
if (p.isAnnotatedBy(formAnnotation)) {
return "form";
}
}
for (String formType : options.getFormParameterTypes()) {
if (qName.equals(formType)) {
return "form";
}
}
// look for File data types, for multipart these are always form parameter types
// as per the swagger 1.2 spec
if (multipart && isFileParameterDataType(parameter, options)) {
return "form";
}
// otherwise default to body
return "body";
}
/**
* Determines the string representation of the parameter name.
* @param parameter The parameter to get the name of that is used for the api
* @param overrideParamNames A map of rawname to override names for parameters
* @param paramNameAnnotations List of FQN of annotations that can be used for the parameter name
* @param options The doclet options
* @return the name of the parameter used by http requests
*/
public static String paramNameOf(Parameter parameter, Map overrideParamNames, List paramNameAnnotations, DocletOptions options) {
String name = null;
String rawName = parameter.name();
// if there is an override name use that ahead of any annotation
if (overrideParamNames != null && overrideParamNames.containsKey(rawName)) {
name = overrideParamNames.get(rawName);
}
// look for any of the configured annotations that can determine the parameter name
if (name == null) {
AnnotationParser p = new AnnotationParser(parameter, options);
for (String paramNameAnnotation : paramNameAnnotations) {
name = p.getAnnotationValue(paramNameAnnotation, "value");
if (name != null) {
break;
}
}
}
// otherwise use the raw parameter name as defined on the method signature
if (name == null) {
name = rawName;
}
return name;
}
/**
* This gets the json views for the given method/field
* @param doc The method/field to get the json views of
* @param options The doclet options
* @return The json views for the given method/field or null if there were none
*/
public static ClassDoc[] getJsonViews(com.sun.javadoc.ProgramElementDoc doc, DocletOptions options) {
AnnotationParser p = new AnnotationParser(doc, options);
ClassDoc[] viewClasses = p.getAnnotationClassDocValues("com.fasterxml.jackson.annotation.JsonView", "value");
if (viewClasses == null) {
viewClasses = p.getAnnotationClassDocValues("org.codehaus.jackson.map.annotate.JsonView", "value");
}
return viewClasses;
}
/**
* This gets whether the given method/field has a json view on it
* @param doc The method/field to check
* @param options The doclet options
* @return True if the given method/field has a json view
*/
public static boolean hasJsonViews(com.sun.javadoc.ProgramElementDoc doc, DocletOptions options) {
return getJsonViews(doc, options) != null;
}
/**
* This checks if an item view e.g optional json view that can be on a getter/field match any of the
* given operation views, that is it can be the same or extend/implement one of the operation views.
* @param operationViews The operation views that indicate which views apply to the operation.
* @param itemsViews The views that are on the getter/field
* @return True if the field/getter is part of the view
*/
public static boolean isItemPartOfView(ClassDoc[] operationViews, ClassDoc[] itemsViews) {
if (operationViews != null && itemsViews != null) {
// check that one of the operation views is a subclass of an item view
for (ClassDoc operationView : operationViews) {
if (isAssignableFrom(itemsViews, operationView)) {
return true;
}
}
return false;
}
return true;
}
/**
* This checks if the given clazz is the same as or implments or is a subclass/sub interface of
* any of the given classes
* @param superClasses the classes to check if they are super classes/super interfaces of the given class
* @param clazz The class to check if it extends/implements any of the given classes
* @return True if the given class extends/implements any of the given classes/interfaces
*/
public static boolean isAssignableFrom(ClassDoc[] superClasses, ClassDoc clazz) {
if (superClasses != null) {
for (ClassDoc superClazz : superClasses) {
if (isAssignableFrom(superClazz, clazz)) {
return true;
}
}
}
return false;
}
private static boolean isAssignableFrom(ClassDoc superClass, ClassDoc clazz) {
if (clazz.subclassOf(superClass)) {
return true;
}
if (superClass.isInterface()) {
// if one of the classes interfaces is the super class interface
// or a subclass interface of the super class then its assignable
ClassDoc[] subInterfaces = clazz.interfaces();
if (subInterfaces != null) {
for (ClassDoc subInterface : subInterfaces) {
if (subInterface.subclassOf(superClass)) {
return true;
}
}
}
}
return false;
}
/**
* This gets the list of consumes mime types from the given method
* @param methodDoc The method javadoc
* @param options The doclet options
* @return The list or null if none were found
*/
public static List getConsumes(MethodDoc methodDoc, DocletOptions options) {
return listValues(methodDoc, JAX_RS_CONSUMES, "value", options);
}
/**
* This gets the list of produces mime types from the given method
* @param methodDoc The method javadoc
* @param options The doclet options
* @return The list or null if none were found
*/
public static List getProduces(MethodDoc methodDoc, DocletOptions options) {
return listValues(methodDoc, JAX_RS_PRODUCES, "value", options);
}
/**
* This gets a list of values from an annotation that uses a string array value
* @param doc The method/field doc
* @param qualifiedAnnotationType The FQN of the annotation
* @param annotationValueName The name of the value field of the annotation to use
* @param options The doclet options
* @return A list of values or null if none were found
*/
public static List listValues(com.sun.javadoc.ProgramElementDoc doc, String qualifiedAnnotationType, String annotationValueName,
DocletOptions options) {
AnnotationParser p = new AnnotationParser(doc, options);
String[] vals = p.getAnnotationValues(qualifiedAnnotationType, annotationValueName);
if (vals != null && vals.length > 0) {
List res = new ArrayList(vals.length);
for (String val : vals) {
if (val != null && val.trim().length() > 0) {
res.add(val.trim());
}
}
if (!res.isEmpty()) {
return res;
}
}
return null;
}
/**
* This gets whether the given type is primitive
* @param type The type to check
* @param options The doclet options
* @return True if the given type is primitive
*/
public static boolean isPrimitive(String type, DocletOptions options) {
if (type == null) {
return false;
}
return PRIMITIVES.contains(typeOf(type, options)[0]);
}
/**
* This gets whether the given type is primitive
* @param type The type to check
* @param options The doclet options
* @return True if the given type is primitive
*/
public static boolean isPrimitive(Type type, DocletOptions options) {
if (type == null) {
return false;
}
return PRIMITIVES.contains(typeOf(type, options)[0]);
}
/**
* This gets whether the given item has any of the given tags
* @param item The javadoc item
* @param matchTags The names of the tags to look for
* @return True if the item has any of the given tags
*/
public static boolean hasTag(com.sun.javadoc.ProgramElementDoc item, Collection matchTags) {
if (matchTags != null) {
for (String matchTag : matchTags) {
Tag[] tags = item.tags(matchTag);
if (tags != null && tags.length > 0) {
return true;
}
}
}
return false;
}
/**
* This gets the parameter names for the given method
* @param method The method
* @return the names of the method parameters or an empty set if the method had none
*/
public static Set getParamNames(com.sun.javadoc.MethodDoc method) {
Set params = new HashSet();
for (Parameter parameter : method.parameters()) {
params.add(parameter.name());
}
return params;
}
/**
* This gets a map of parameter name to value from a javadoc tag on a method.
* This validates that the names of the parameters in each NVP is an actual method parameter
* @param method The method
* @param params The pre-read params of the method, if null they will be read from the given method
* @param matchTags The names of the javadoc tags to look for
* @param options The doclet options
* @return a map of parameter name to value from a javadoc tag on a method or an empty map if none were found
*/
public static Map getMethodParamNameValuePairs(com.sun.javadoc.MethodDoc method, Set params, Collection matchTags,
DocletOptions options) {
String value = getTagValue(method, matchTags, options);
if (value != null) {
String[] parts = value.split("\\s+");
if (parts != null && parts.length > 0) {
if (parts.length % 2 != 0) {
throw new IllegalStateException(
"Invalid javadoc parameter on method "
+ method.name()
+ " for tags: "
+ matchTags
+ ". The value had "
+ parts.length
+ " whitespace seperated parts when it was expected to have name value pairs for each parameter, e.g. the number of parts should have been even.");
}
if (params == null) {
params = getParamNames(method);
}
Map res = new HashMap(parts.length / 2);
for (int i = 0; i < parts.length; i += 2) {
String name = parts[i];
if (!params.contains(name)) {
throw new IllegalStateException("Invalid javadoc parameter on method " + method.name() + " for tags: " + matchTags + ". The parameter "
+ name + " is not the name of one of the method parameters.");
}
String val = parts[i + 1];
res.put(name, val);
}
return res;
}
}
return Collections.emptyMap();
}
/**
* This gets a list of parameter names from a method javadoc tag where the value of the tag is in the form
* paramName1,paramName2 ... paramNameN
* @param method The method
* @param params The pre-read params of the method, if null they will be read from the given method
* @param matchTags The names of the javadoc tags to look for
* @param options The doclet options
* @return The list of parameter names or an empty list if there were none
*/
public static List getCsvParams(com.sun.javadoc.MethodDoc method, Set params, Collection matchTags, DocletOptions options) {
if (params == null) {
params = getParamNames(method);
}
List tagParams = getTagCsvValues(method, matchTags, options);
// check each param is an actual param of the method
if (tagParams != null) {
for (String param : tagParams) {
if (!params.contains(param)) {
throw new IllegalStateException("Invalid javadoc parameter on method " + method.name() + " for tags: " + matchTags + ". The parameter "
+ param + " is not the name of one of the method parameters.");
}
}
return tagParams;
}
return Collections.emptyList();
}
/**
* This gets a csv javadoc tag value as a list of the values in the csv for the first matched tag.
* e.g. @myTag 1,2,3 would return a list of 1,2,3 assuming matchTags contained myTag
* @param item The javadoc item
* @param matchTags The tags to match
* @param options The doclet options
* @return The csv values of the first matching tags value or an empty list if there were none.
*/
public static List getTagCsvValues(com.sun.javadoc.ProgramElementDoc item, Collection matchTags, DocletOptions options) {
String value = getTagValue(item, matchTags, options);
if (value != null) {
String[] vals = value.split(",");
if (vals != null && vals.length > 0) {
List res = new ArrayList();
for (String val : vals) {
if (val != null && val.trim().length() > 0) {
res.add(options.replaceVars(val.trim()));
}
}
return res.isEmpty() ? null : res;
}
}
return Collections.emptyList();
}
/**
* This gets the value of the first tag found from the given collection of tag names
* @param item The item to get the tag value of
* @param matchTags The collection of tag names of the tag to get a value of
* @param options The doclet options
* @return The value of the first tag found with the name in the given collection or null if either the tag
* was not present or had no value
*/
public static String getTagValue(com.sun.javadoc.ProgramElementDoc item, Collection matchTags, DocletOptions options) {
String customValue = null;
if (matchTags != null) {
for (String matchTag : matchTags) {
Tag[] tags = item.tags(matchTag);
if (tags != null && tags.length > 0) {
customValue = tags[0].text().trim();
if (customValue.length() == 0) {
customValue = null;
}
break;
}
}
}
return options.replaceVars(customValue);
}
private static final Set DEPRECATED_TAGS = new HashSet();
private static final Set DEPRECATED_ANNOTATIONS = new HashSet();
static {
DEPRECATED_TAGS.add("deprecated");
DEPRECATED_TAGS.add("Deprecated");
DEPRECATED_ANNOTATIONS.add("java.lang.Deprecated");
}
/**
* This gets whether the given annotations have one of the deprecated ones
* @param annotations The annotations to check
* @return True if the annotations array contains a deprecated one
*/
public static boolean hasDeprecated(AnnotationDesc[] annotations) {
if (annotations != null && annotations.length > 0) {
List allAnnotations = Arrays.asList(annotations);
Collection excluded = filter(allAnnotations, new ParserHelper.ExcludedAnnotations(DEPRECATED_ANNOTATIONS));
if (!excluded.isEmpty()) {
return true;
}
}
return false;
}
/**
* This gets whether the given item is marked as deprecated either via a javadoc tag
* or an annotation
* @param item The item to check
* @return True if the item is flagged as deprecated
*/
public static boolean isDeprecated(com.sun.javadoc.ProgramElementDoc item) {
if (hasTag(item, DEPRECATED_TAGS)) {
return true;
}
return hasDeprecated(item.annotations());
}
/**
* This gets values of any of the javadoc tags that are in the given collection
* @param item The javadoc item to get the tags of
* @param matchTags The names of the tags to get
* @param options The doclet options
* @return A list of tag values or null if none were found
*/
public static List getTagValues(com.sun.javadoc.ProgramElementDoc item, Collection matchTags, DocletOptions options) {
List res = null;
if (matchTags != null) {
for (String matchTag : matchTags) {
Tag[] tags = item.tags(matchTag);
if (tags != null && tags.length > 0) {
for (Tag tag : tags) {
if (res == null) {
res = new ArrayList();
}
String customValue = tag.text().trim();
if (customValue.length() > 0) {
res.add(options.replaceVars(customValue));
}
}
}
}
}
return res == null || res.isEmpty() ? null : res;
}
/**
* This builds a map of FQN to type for all see annotations
* on the given items javadoc
* @param item The item to get the see types of
* @return A map of see types or an empty map if there were no see tags.
*/
public static Map readSeeTypes(com.sun.javadoc.ProgramElementDoc item) {
Map types = new HashMap();
SeeTag[] seeTags = item.seeTags();
if (seeTags != null) {
for (SeeTag seeTag : seeTags) {
Type type = seeTag.referencedClass();
types.put(seeTag.referencedClassName(), type);
}
}
return types;
}
/**
* This finds a model class by the given name
* @param classes The model classes
* @param qualifiedClassName The FQN of the class
* @return {@link ClassDoc} found among all classes processed by the doclet based on a given qualifiedClassName; null if not found
*/
public static ClassDoc findModel(Collection classes, String qualifiedClassName) {
if (classes != null && qualifiedClassName != null) {
for (ClassDoc cls : classes) {
if (qualifiedClassName.equals(cls.qualifiedName())) {
return cls;
}
}
}
return null;
}
/**
* The ExcludedAnnotations represents a filter that can be used for filtering
* only if the specified annotation classes are present
*/
public static class ExcludedAnnotations implements Predicate {
private final Collection annotationClasses;
/**
* This creates a ExcludedAnnotations
* @param annotationClasses
*/
public ExcludedAnnotations(Collection annotationClasses) {
this.annotationClasses = annotationClasses;
}
public boolean apply(AnnotationDesc annotationDesc) {
String annotationClass = annotationDesc.annotationType().qualifiedTypeName();
return this.annotationClasses.contains(annotationClass);
}
}
/**
* The JaxRsAnnotations represents a predicate that can be used for filtering
* only if a jaxrs annotation is present
*/
public static class JaxRsAnnotations implements Predicate {
public boolean apply(AnnotationDesc annotationDesc) {
String annotationClass = annotationDesc.annotationType().qualifiedTypeName();
return annotationClass.startsWith(JAX_RS_ANNOTATION_PACKAGE);
}
}
}
