forked from projectlombok/lombok
/
HandlerUtil.java
870 lines (782 loc) · 42.4 KB
/
HandlerUtil.java
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/*
* Copyright (C) 2013-2020 The Project Lombok Authors.
*
* 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.core.handlers;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import lombok.AllArgsConstructor;
import lombok.ConfigurationKeys;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import lombok.ToString;
import lombok.Value;
import lombok.With;
import lombok.core.AST;
import lombok.core.AnnotationValues;
import lombok.core.JavaIdentifiers;
import lombok.core.LombokNode;
import lombok.core.configuration.AllowHelper;
import lombok.core.configuration.ConfigurationKey;
import lombok.core.configuration.FlagUsageType;
import lombok.experimental.Accessors;
import lombok.experimental.FieldDefaults;
/**
* Container for static utility methods useful for some of the standard lombok handlers, regardless of
* target platform (e.g. useful for both javac and Eclipse lombok implementations).
*/
public class HandlerUtil {
private HandlerUtil() {}
public enum FieldAccess {
GETTER, PREFER_FIELD, ALWAYS_FIELD;
}
public static int primeForHashcode() {
return 59;
}
public static int primeForTrue() {
return 79;
}
public static int primeForFalse() {
return 97;
}
public static int primeForNull() {
return 43;
}
public static final List<String> NONNULL_ANNOTATIONS, BASE_COPYABLE_ANNOTATIONS, COPY_TO_SETTER_ANNOTATIONS, COPY_TO_BUILDER_SINGULAR_SETTER_ANNOTATIONS, JACKSON_COPY_TO_BUILDER_ANNOTATIONS;
static {
NONNULL_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
"androidx.annotation.NonNull",
"android.support.annotation.NonNull",
"com.sun.istack.internal.NotNull",
"edu.umd.cs.findbugs.annotations.NonNull",
"javax.annotation.Nonnull",
// "javax.validation.constraints.NotNull", // The field might contain a null value until it is persisted.
"lombok.NonNull",
"org.checkerframework.checker.nullness.qual.NonNull",
"org.eclipse.jdt.annotation.NonNull",
"org.eclipse.jgit.annotations.NonNull",
"org.jetbrains.annotations.NotNull",
"org.jmlspecs.annotation.NonNull",
"org.netbeans.api.annotations.common.NonNull",
"org.springframework.lang.NonNull",
}));
BASE_COPYABLE_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
"androidx.annotation.NonNull",
"androidx.annotation.Nullable",
"android.support.annotation.NonNull",
"android.support.annotation.Nullable",
"edu.umd.cs.findbugs.annotations.NonNull",
"edu.umd.cs.findbugs.annotations.Nullable",
"edu.umd.cs.findbugs.annotations.UnknownNullness",
"javax.annotation.CheckForNull",
"javax.annotation.Nonnull",
"javax.annotation.Nullable",
"lombok.NonNull",
"org.jmlspecs.annotation.NonNull",
"org.jmlspecs.annotation.Nullable",
// To update Checker Framework annotations, run:
// grep --recursive --files-with-matches -e '^@Target\b.*TYPE_USE' $CHECKERFRAMEWORK/checker/src/main/java $CHECKERFRAMEWORK/framework/src/main/java | grep '\.java$' | sed 's/.*\/java\//\t\t\t"/' | sed 's/\.java$/",/' | sed 's/\//./g' | sort
// Only add new annotations, do not remove annotations that have been removed from the lastest version of the Checker Framework.
"org.checkerframework.checker.compilermsgs.qual.CompilerMessageKey",
"org.checkerframework.checker.compilermsgs.qual.CompilerMessageKeyBottom",
"org.checkerframework.checker.compilermsgs.qual.UnknownCompilerMessageKey",
"org.checkerframework.checker.fenum.qual.AwtAlphaCompositingRule",
"org.checkerframework.checker.fenum.qual.AwtColorSpace",
"org.checkerframework.checker.fenum.qual.AwtCursorType",
"org.checkerframework.checker.fenum.qual.AwtFlowLayout",
"org.checkerframework.checker.fenum.qual.Fenum",
"org.checkerframework.checker.fenum.qual.FenumBottom",
"org.checkerframework.checker.fenum.qual.FenumTop",
"org.checkerframework.checker.fenum.qual.PolyFenum",
"org.checkerframework.checker.fenum.qual.SwingBoxOrientation",
"org.checkerframework.checker.fenum.qual.SwingCompassDirection",
"org.checkerframework.checker.fenum.qual.SwingElementOrientation",
"org.checkerframework.checker.fenum.qual.SwingHorizontalOrientation",
"org.checkerframework.checker.fenum.qual.SwingSplitPaneOrientation",
"org.checkerframework.checker.fenum.qual.SwingTextOrientation",
"org.checkerframework.checker.fenum.qual.SwingTitleJustification",
"org.checkerframework.checker.fenum.qual.SwingTitlePosition",
"org.checkerframework.checker.fenum.qual.SwingVerticalOrientation",
"org.checkerframework.checker.formatter.qual.Format",
"org.checkerframework.checker.formatter.qual.FormatBottom",
"org.checkerframework.checker.formatter.qual.InvalidFormat",
"org.checkerframework.checker.guieffect.qual.AlwaysSafe",
"org.checkerframework.checker.guieffect.qual.PolyUI",
"org.checkerframework.checker.guieffect.qual.UI",
"org.checkerframework.checker.i18nformatter.qual.I18nFormat",
"org.checkerframework.checker.i18nformatter.qual.I18nFormatBottom",
"org.checkerframework.checker.i18nformatter.qual.I18nFormatFor",
"org.checkerframework.checker.i18nformatter.qual.I18nInvalidFormat",
"org.checkerframework.checker.i18nformatter.qual.I18nUnknownFormat",
"org.checkerframework.checker.i18n.qual.LocalizableKey",
"org.checkerframework.checker.i18n.qual.LocalizableKeyBottom",
"org.checkerframework.checker.i18n.qual.Localized",
"org.checkerframework.checker.i18n.qual.UnknownLocalizableKey",
"org.checkerframework.checker.i18n.qual.UnknownLocalized",
"org.checkerframework.checker.index.qual.GTENegativeOne",
"org.checkerframework.checker.index.qual.IndexFor",
"org.checkerframework.checker.index.qual.IndexOrHigh",
"org.checkerframework.checker.index.qual.IndexOrLow",
"org.checkerframework.checker.index.qual.LengthOf",
"org.checkerframework.checker.index.qual.LessThan",
"org.checkerframework.checker.index.qual.LessThanBottom",
"org.checkerframework.checker.index.qual.LessThanUnknown",
"org.checkerframework.checker.index.qual.LowerBoundBottom",
"org.checkerframework.checker.index.qual.LowerBoundUnknown",
"org.checkerframework.checker.index.qual.LTEqLengthOf",
"org.checkerframework.checker.index.qual.LTLengthOf",
"org.checkerframework.checker.index.qual.LTOMLengthOf",
"org.checkerframework.checker.index.qual.NegativeIndexFor",
"org.checkerframework.checker.index.qual.NonNegative",
"org.checkerframework.checker.index.qual.PolyIndex",
"org.checkerframework.checker.index.qual.PolyLength",
"org.checkerframework.checker.index.qual.PolyLowerBound",
"org.checkerframework.checker.index.qual.PolySameLen",
"org.checkerframework.checker.index.qual.PolyUpperBound",
"org.checkerframework.checker.index.qual.Positive",
"org.checkerframework.checker.index.qual.SameLen",
"org.checkerframework.checker.index.qual.SameLenBottom",
"org.checkerframework.checker.index.qual.SameLenUnknown",
"org.checkerframework.checker.index.qual.SearchIndexBottom",
"org.checkerframework.checker.index.qual.SearchIndexFor",
"org.checkerframework.checker.index.qual.SearchIndexUnknown",
"org.checkerframework.checker.index.qual.SubstringIndexBottom",
"org.checkerframework.checker.index.qual.SubstringIndexFor",
"org.checkerframework.checker.index.qual.SubstringIndexUnknown",
"org.checkerframework.checker.index.qual.UpperBoundBottom",
"org.checkerframework.checker.index.qual.UpperBoundUnknown",
"org.checkerframework.checker.initialization.qual.FBCBottom",
"org.checkerframework.checker.initialization.qual.Initialized",
"org.checkerframework.checker.initialization.qual.UnderInitialization",
"org.checkerframework.checker.initialization.qual.UnknownInitialization",
"org.checkerframework.checker.interning.qual.Interned",
"org.checkerframework.checker.interning.qual.InternedDistinct",
"org.checkerframework.checker.interning.qual.PolyInterned",
"org.checkerframework.checker.interning.qual.UnknownInterned",
"org.checkerframework.checker.lock.qual.GuardedBy",
"org.checkerframework.checker.lock.qual.GuardedByBottom",
"org.checkerframework.checker.lock.qual.GuardedByUnknown",
"org.checkerframework.checker.lock.qual.GuardSatisfied",
"org.checkerframework.checker.nullness.qual.KeyFor",
"org.checkerframework.checker.nullness.qual.KeyForBottom",
"org.checkerframework.checker.nullness.qual.MonotonicNonNull",
"org.checkerframework.checker.nullness.qual.NonNull",
"org.checkerframework.checker.nullness.qual.NonRaw",
"org.checkerframework.checker.nullness.qual.Nullable",
"org.checkerframework.checker.nullness.qual.PolyKeyFor",
"org.checkerframework.checker.nullness.qual.PolyNull",
"org.checkerframework.checker.nullness.qual.PolyRaw",
"org.checkerframework.checker.nullness.qual.Raw",
"org.checkerframework.checker.nullness.qual.UnknownKeyFor",
"org.checkerframework.checker.optional.qual.MaybePresent",
"org.checkerframework.checker.optional.qual.PolyPresent",
"org.checkerframework.checker.optional.qual.Present",
"org.checkerframework.checker.propkey.qual.PropertyKey",
"org.checkerframework.checker.propkey.qual.PropertyKeyBottom",
"org.checkerframework.checker.propkey.qual.UnknownPropertyKey",
"org.checkerframework.checker.regex.qual.PolyRegex",
"org.checkerframework.checker.regex.qual.Regex",
"org.checkerframework.checker.regex.qual.RegexBottom",
"org.checkerframework.checker.regex.qual.UnknownRegex",
"org.checkerframework.checker.signature.qual.BinaryName",
"org.checkerframework.checker.signature.qual.BinaryNameInUnnamedPackage",
"org.checkerframework.checker.signature.qual.ClassGetName",
"org.checkerframework.checker.signature.qual.ClassGetSimpleName",
"org.checkerframework.checker.signature.qual.DotSeparatedIdentifiers",
"org.checkerframework.checker.signature.qual.FieldDescriptor",
"org.checkerframework.checker.signature.qual.FieldDescriptorForPrimitive",
"org.checkerframework.checker.signature.qual.FieldDescriptorForPrimitiveOrArrayInUnnamedPackage",
"org.checkerframework.checker.signature.qual.FqBinaryName",
"org.checkerframework.checker.signature.qual.FullyQualifiedName",
"org.checkerframework.checker.signature.qual.Identifier",
"org.checkerframework.checker.signature.qual.IdentifierOrArray",
"org.checkerframework.checker.signature.qual.InternalForm",
"org.checkerframework.checker.signature.qual.MethodDescriptor",
"org.checkerframework.checker.signature.qual.PolySignature",
"org.checkerframework.checker.signature.qual.SignatureBottom",
"org.checkerframework.checker.signedness.qual.Constant",
"org.checkerframework.checker.signedness.qual.PolySignedness",
"org.checkerframework.checker.signedness.qual.PolySigned",
"org.checkerframework.checker.signedness.qual.Signed",
"org.checkerframework.checker.signedness.qual.SignednessBottom",
"org.checkerframework.checker.signedness.qual.SignednessGlb",
"org.checkerframework.checker.signedness.qual.SignedPositive",
"org.checkerframework.checker.signedness.qual.UnknownSignedness",
"org.checkerframework.checker.signedness.qual.Unsigned",
"org.checkerframework.checker.tainting.qual.PolyTainted",
"org.checkerframework.checker.tainting.qual.Tainted",
"org.checkerframework.checker.tainting.qual.Untainted",
"org.checkerframework.checker.units.qual.A",
"org.checkerframework.checker.units.qual.Acceleration",
"org.checkerframework.checker.units.qual.Angle",
"org.checkerframework.checker.units.qual.Area",
"org.checkerframework.checker.units.qual.C",
"org.checkerframework.checker.units.qual.cd",
"org.checkerframework.checker.units.qual.Current",
"org.checkerframework.checker.units.qual.degrees",
"org.checkerframework.checker.units.qual.g",
"org.checkerframework.checker.units.qual.h",
"org.checkerframework.checker.units.qual.K",
"org.checkerframework.checker.units.qual.kg",
"org.checkerframework.checker.units.qual.km",
"org.checkerframework.checker.units.qual.km2",
"org.checkerframework.checker.units.qual.kmPERh",
"org.checkerframework.checker.units.qual.Length",
"org.checkerframework.checker.units.qual.Luminance",
"org.checkerframework.checker.units.qual.m",
"org.checkerframework.checker.units.qual.m2",
"org.checkerframework.checker.units.qual.Mass",
"org.checkerframework.checker.units.qual.min",
"org.checkerframework.checker.units.qual.mm",
"org.checkerframework.checker.units.qual.mm2",
"org.checkerframework.checker.units.qual.mol",
"org.checkerframework.checker.units.qual.mPERs",
"org.checkerframework.checker.units.qual.mPERs2",
"org.checkerframework.checker.units.qual.PolyUnit",
"org.checkerframework.checker.units.qual.radians",
"org.checkerframework.checker.units.qual.s",
"org.checkerframework.checker.units.qual.Speed",
"org.checkerframework.checker.units.qual.Substance",
"org.checkerframework.checker.units.qual.Temperature",
"org.checkerframework.checker.units.qual.Time",
"org.checkerframework.checker.units.qual.UnitsBottom",
"org.checkerframework.checker.units.qual.UnknownUnits",
"org.checkerframework.common.aliasing.qual.LeakedToResult",
"org.checkerframework.common.aliasing.qual.MaybeAliased",
"org.checkerframework.common.aliasing.qual.NonLeaked",
"org.checkerframework.common.aliasing.qual.Unique",
"org.checkerframework.common.reflection.qual.ClassBound",
"org.checkerframework.common.reflection.qual.ClassVal",
"org.checkerframework.common.reflection.qual.ClassValBottom",
"org.checkerframework.common.reflection.qual.MethodVal",
"org.checkerframework.common.reflection.qual.MethodValBottom",
"org.checkerframework.common.reflection.qual.UnknownClass",
"org.checkerframework.common.reflection.qual.UnknownMethod",
"org.checkerframework.common.subtyping.qual.Bottom",
"org.checkerframework.common.util.report.qual.ReportUnqualified",
"org.checkerframework.common.value.qual.ArrayLen",
"org.checkerframework.common.value.qual.ArrayLenRange",
"org.checkerframework.common.value.qual.BoolVal",
"org.checkerframework.common.value.qual.BottomVal",
"org.checkerframework.common.value.qual.DoubleVal",
"org.checkerframework.common.value.qual.IntRange",
"org.checkerframework.common.value.qual.IntVal",
"org.checkerframework.common.value.qual.MinLen",
"org.checkerframework.common.value.qual.PolyValue",
"org.checkerframework.common.value.qual.StringVal",
"org.checkerframework.common.value.qual.UnknownVal",
"org.checkerframework.framework.qual.PolyAll",
"org.checkerframework.framework.util.PurityUnqualified",
"org.eclipse.jdt.annotation.NonNull",
"org.eclipse.jdt.annotation.Nullable",
"org.jetbrains.annotations.NotNull",
"org.jetbrains.annotations.Nullable",
"org.springframework.lang.NonNull",
"org.springframework.lang.Nullable",
"org.netbeans.api.annotations.common.NonNull",
"org.netbeans.api.annotations.common.NullAllowed",
}));
COPY_TO_SETTER_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
"com.fasterxml.jackson.annotation.JacksonInject",
"com.fasterxml.jackson.annotation.JsonAlias",
"com.fasterxml.jackson.annotation.JsonFormat",
"com.fasterxml.jackson.annotation.JsonIgnore",
"com.fasterxml.jackson.annotation.JsonIgnoreProperties",
"com.fasterxml.jackson.annotation.JsonProperty",
"com.fasterxml.jackson.annotation.JsonSetter",
"com.fasterxml.jackson.annotation.JsonSubTypes",
"com.fasterxml.jackson.annotation.JsonTypeInfo",
"com.fasterxml.jackson.annotation.JsonUnwrapped",
"com.fasterxml.jackson.annotation.JsonView",
"com.fasterxml.jackson.databind.annotation.JsonDeserialize",
"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper",
"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty",
"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText",
}));
COPY_TO_BUILDER_SINGULAR_SETTER_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
"com.fasterxml.jackson.annotation.JsonAnySetter",
}));
JACKSON_COPY_TO_BUILDER_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
"com.fasterxml.jackson.annotation.JsonAutoDetect",
"com.fasterxml.jackson.annotation.JsonFormat",
"com.fasterxml.jackson.annotation.JsonIgnoreProperties",
"com.fasterxml.jackson.annotation.JsonIgnoreType",
"com.fasterxml.jackson.annotation.JsonPropertyOrder",
"com.fasterxml.jackson.annotation.JsonRootName",
"com.fasterxml.jackson.annotation.JsonSubTypes",
"com.fasterxml.jackson.annotation.JsonTypeInfo",
"com.fasterxml.jackson.annotation.JsonTypeName",
"com.fasterxml.jackson.annotation.JsonView",
"com.fasterxml.jackson.databind.annotation.JsonNaming",
}));
}
/** Checks if the given name is a valid identifier.
*
* If it is, this returns {@code true} and does nothing else.
* If it isn't, this returns {@code false} and adds an error message to the supplied node.
*/
public static boolean checkName(String nameSpec, String identifier, LombokNode<?, ?, ?> errorNode) {
if (identifier.isEmpty()) {
errorNode.addError(nameSpec + " cannot be the empty string.");
return false;
}
if (!JavaIdentifiers.isValidJavaIdentifier(identifier)) {
errorNode.addError(nameSpec + " must be a valid java identifier.");
return false;
}
return true;
}
public static String autoSingularize(String plural) {
return Singulars.autoSingularize(plural);
}
public static void handleFlagUsage(LombokNode<?, ?, ?> node, ConfigurationKey<FlagUsageType> key, String featureName) {
FlagUsageType fut = node.getAst().readConfiguration(key);
if (fut == null && AllowHelper.isAllowable(key)) {
node.addError("Use of " + featureName + " is disabled by default. Please add '" + key.getKeyName() + " = " + FlagUsageType.ALLOW + "' to 'lombok.config' if you want to enable is.");
}
if (fut != null) {
String msg = "Use of " + featureName + " is flagged according to lombok configuration.";
if (fut == FlagUsageType.WARNING) node.addWarning(msg);
else if (fut == FlagUsageType.ERROR) node.addError(msg);
}
}
@SuppressWarnings("deprecation")
public static boolean shouldAddGenerated(LombokNode<?, ?, ?> node) {
Boolean add = node.getAst().readConfiguration(ConfigurationKeys.ADD_JAVAX_GENERATED_ANNOTATIONS);
if (add != null) return add;
return Boolean.TRUE.equals(node.getAst().readConfiguration(ConfigurationKeys.ADD_GENERATED_ANNOTATIONS));
}
public static void handleExperimentalFlagUsage(LombokNode<?, ?, ?> node, ConfigurationKey<FlagUsageType> key, String featureName) {
handleFlagUsage(node, key, featureName, ConfigurationKeys.EXPERIMENTAL_FLAG_USAGE, "any lombok.experimental feature");
}
public static void handleFlagUsage(LombokNode<?, ?, ?> node, ConfigurationKey<FlagUsageType> key1, String featureName1, ConfigurationKey<FlagUsageType> key2, String featureName2) {
FlagUsageType fut1 = node.getAst().readConfiguration(key1);
FlagUsageType fut2 = node.getAst().readConfiguration(key2);
FlagUsageType fut = null;
String featureName = null;
if (fut1 == FlagUsageType.ERROR) {
fut = fut1;
featureName = featureName1;
} else if (fut2 == FlagUsageType.ERROR) {
fut = fut2;
featureName = featureName2;
} else if (fut1 == FlagUsageType.WARNING) {
fut = fut1;
featureName = featureName1;
} else {
fut = fut2;
featureName = featureName2;
}
if (fut != null) {
String msg = "Use of " + featureName + " is flagged according to lombok configuration.";
if (fut == FlagUsageType.WARNING) node.addWarning(msg);
else if (fut == FlagUsageType.ERROR) node.addError(msg);
}
}
public static boolean shouldReturnThis0(AnnotationValues<Accessors> accessors, AST<?, ?, ?> ast) {
boolean chainForced = accessors.isExplicit("chain");
boolean fluentForced = accessors.isExplicit("fluent");
Accessors instance = accessors.getInstance();
boolean chain = instance.chain();
boolean fluent = instance.fluent();
if (chainForced) return chain;
if (!chainForced) {
Boolean chainConfig = ast.readConfiguration(ConfigurationKeys.ACCESSORS_CHAIN);
if (chainConfig != null) return chainConfig;
}
if (!fluentForced) {
Boolean fluentConfig = ast.readConfiguration(ConfigurationKeys.ACCESSORS_FLUENT);
if (fluentConfig != null) fluent = fluentConfig;
}
return chain || fluent;
}
@SuppressWarnings({"all", "unchecked", "deprecation"})
public static final List<String> INVALID_ON_BUILDERS = Collections.unmodifiableList(
Arrays.<String>asList(
Getter.class.getName(), Setter.class.getName(), With.class.getName(), "lombok.experimental.Wither",
ToString.class.getName(), EqualsAndHashCode.class.getName(),
RequiredArgsConstructor.class.getName(), AllArgsConstructor.class.getName(), NoArgsConstructor.class.getName(),
Data.class.getName(), Value.class.getName(), "lombok.experimental.Value", FieldDefaults.class.getName()));
/**
* Given the name of a field, return the 'base name' of that field. For example, {@code fFoobar} becomes {@code foobar} if {@code f} is in the prefix list.
* For prefixes that end in a letter character, the next character must be a non-lowercase character (i.e. {@code hashCode} is not {@code ashCode} even if
* {@code h} is in the prefix list, but {@code hAshcode} would become {@code ashCode}). The first prefix that matches is used. If the prefix list is empty,
* or the empty string is in the prefix list and no prefix before it matches, the fieldName will be returned verbatim.
*
* If no prefix matches and the empty string is not in the prefix list and the prefix list is not empty, {@code null} is returned.
*
* @param fieldName The full name of a field.
* @param prefixes A list of prefixes, usually provided by the {@code Accessors} settings annotation, listing field prefixes.
* @return The base name of the field.
*/
public static CharSequence removePrefix(CharSequence fieldName, List<String> prefixes) {
if (prefixes == null || prefixes.isEmpty()) return fieldName;
fieldName = fieldName.toString();
outer:
for (String prefix : prefixes) {
if (prefix.length() == 0) return fieldName;
if (fieldName.length() <= prefix.length()) continue outer;
for (int i = 0; i < prefix.length(); i++) {
if (fieldName.charAt(i) != prefix.charAt(i)) continue outer;
}
char followupChar = fieldName.charAt(prefix.length());
// if prefix is a letter then follow up letter needs to not be lowercase, i.e. 'foo' is not a match
// as field named 'oo' with prefix 'f', but 'fOo' would be.
if (Character.isLetter(prefix.charAt(prefix.length() - 1)) &&
Character.isLowerCase(followupChar)) continue outer;
return "" + Character.toLowerCase(followupChar) + fieldName.subSequence(prefix.length() + 1, fieldName.length());
}
return null;
}
public static final String DEFAULT_EXCEPTION_FOR_NON_NULL = "java.lang.NullPointerException";
/**
* Generates a getter name from a given field name.
*
* Strategy:
* <ul>
* <li>Reduce the field's name to its base name by stripping off any prefix (from {@code Accessors}). If the field name does not fit
* the prefix list, this method immediately returns {@code null}.</li>
* <li>If {@code Accessors} has {@code fluent=true}, then return the basename.</li>
* <li>Pick a prefix. 'get' normally, but 'is' if {@code isBoolean} is true.</li>
* <li>Only if {@code isBoolean} is true: Check if the field starts with {@code is} followed by a non-lowercase character. If so, return the field name verbatim.</li>
* <li>Check if the first character of the field is lowercase. If so, check if the second character
* exists and is title or upper case. If so, uppercase the first character. If not, titlecase the first character.</li>
* <li>Return the prefix plus the possibly title/uppercased first character, and the rest of the field name.</li>
* </ul>
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type {@code java.lang.Boolean}, you should provide {@code false}.
* @return The getter name for this field, or {@code null} if this field does not fit expected patterns and therefore cannot be turned into a getter name.
*/
public static String toGetterName(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAccessorName(ast, accessors, fieldName, isBoolean, "is", "get", true);
}
/**
* Generates a setter name from a given field name.
*
* Strategy:
* <ul>
* <li>Reduce the field's name to its base name by stripping off any prefix (from {@code Accessors}). If the field name does not fit
* the prefix list, this method immediately returns {@code null}.</li>
* <li>If {@code Accessors} has {@code fluent=true}, then return the basename.</li>
* <li>Only if {@code isBoolean} is true: Check if the field starts with {@code is} followed by a non-lowercase character.
* If so, replace {@code is} with {@code set} and return that.</li>
* <li>Check if the first character of the field is lowercase. If so, check if the second character
* exists and is title or upper case. If so, uppercase the first character. If not, titlecase the first character.</li>
* <li>Return {@code "set"} plus the possibly title/uppercased first character, and the rest of the field name.</li>
* </ul>
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type {@code java.lang.Boolean}, you should provide {@code false}.
* @return The setter name for this field, or {@code null} if this field does not fit expected patterns and therefore cannot be turned into a getter name.
*/
public static String toSetterName(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAccessorName(ast, accessors, fieldName, isBoolean, "set", "set", true);
}
/**
* Generates a with name from a given field name.
*
* Strategy:
* <ul>
* <li>Reduce the field's name to its base name by stripping off any prefix (from {@code Accessors}). If the field name does not fit
* the prefix list, this method immediately returns {@code null}.</li>
* <li>Only if {@code isBoolean} is true: Check if the field starts with {@code is} followed by a non-lowercase character.
* If so, replace {@code is} with {@code with} and return that.</li>
* <li>Check if the first character of the field is lowercase. If so, check if the second character
* exists and is title or upper case. If so, uppercase the first character. If not, titlecase the first character.</li>
* <li>Return {@code "with"} plus the possibly title/uppercased first character, and the rest of the field name.</li>
* </ul>
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type {@code java.lang.Boolean}, you should provide {@code false}.
* @return The with name for this field, or {@code null} if this field does not fit expected patterns and therefore cannot be turned into a getter name.
*/
public static String toWithName(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAccessorName(ast, accessors, fieldName, isBoolean, "with", "with", false);
}
/**
* Generates a withBy name from a given field name.
*
* Strategy: The same as the {@code toWithName} strategy, but then append {@code "By"} at the end.
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type {@code java.lang.Boolean}, you should provide {@code false}.
* @return The with name for this field, or {@code null} if this field does not fit expected patterns and therefore cannot be turned into a getter name.
*/
public static String toWithByName(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAccessorName(ast, accessors, fieldName, isBoolean, "with", "with", false) + "By";
}
private static String toAccessorName(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean,
String booleanPrefix, String normalPrefix, boolean adhereToFluent) {
fieldName = fieldName.toString();
if (fieldName.length() == 0) return null;
if (Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.GETTER_CONSEQUENT_BOOLEAN))) isBoolean = false;
boolean explicitPrefix = accessors != null && accessors.isExplicit("prefix");
boolean explicitFluent = accessors != null && accessors.isExplicit("fluent");
boolean explicitJavaBeansSpecCapitalization = accessors != null && accessors.isExplicit("javaBeansSpecCapitalization");
Accessors ac = (explicitPrefix || explicitFluent || explicitJavaBeansSpecCapitalization) ? accessors.getInstance() : null;
List<String> prefix = explicitPrefix ? Arrays.asList(ac.prefix()) : ast.readConfiguration(ConfigurationKeys.ACCESSORS_PREFIX);
boolean fluent = explicitFluent ? ac.fluent() : Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.ACCESSORS_FLUENT));
boolean javaBeansSpecCapitalization = explicitJavaBeansSpecCapitalization ? ac.javaBeansSpecCapitalization() : Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.ACCESSORS_JAVA_BEANS_SPEC_CAPITALIZATION));
fieldName = removePrefix(fieldName, prefix);
if (fieldName == null) return null;
String fName = fieldName.toString();
if (adhereToFluent && fluent) return fName;
if (isBoolean && fName.startsWith("is") && fieldName.length() > 2 && !Character.isLowerCase(fieldName.charAt(2))) {
// The field is for example named 'isRunning'.
return booleanPrefix + fName.substring(2);
}
return buildAccessorName(isBoolean ? booleanPrefix : normalPrefix, fName, javaBeansSpecCapitalization);
}
/**
* Returns all names of methods that would represent the getter for a field with the provided name.
*
* For example if {@code isBoolean} is true, then a field named {@code isRunning} would produce:<br />
* {@code [isRunning, getRunning, isIsRunning, getIsRunning]}
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type 'java.lang.Boolean', you should provide {@code false}.
*/
public static List<String> toAllGetterNames(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAllAccessorNames(ast, accessors, fieldName, isBoolean, "is", "get", true);
}
/**
* Returns all names of methods that would represent the setter for a field with the provided name.
*
* For example if {@code isBoolean} is true, then a field named {@code isRunning} would produce:<br />
* {@code [setRunning, setIsRunning]}
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type 'java.lang.Boolean', you should provide {@code false}.
*/
public static List<String> toAllSetterNames(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAllAccessorNames(ast, accessors, fieldName, isBoolean, "set", "set", true);
}
/**
* Returns all names of methods that would represent the with for a field with the provided name.
*
* For example if {@code isBoolean} is true, then a field named {@code isRunning} would produce:<br />
* {@code [withRunning, withIsRunning]}
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type 'java.lang.Boolean', you should provide {@code false}.
*/
public static List<String> toAllWithNames(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
return toAllAccessorNames(ast, accessors, fieldName, isBoolean, "with", "with", false);
}
/**
* Returns all names of methods that would represent the withBy for a field with the provided name.
*
* For example if {@code isBoolean} is true, then a field named {@code isRunning} would produce:<br />
* {@code [withRunningBy, withIsRunningBy]}
*
* @param accessors Accessors configuration.
* @param fieldName the name of the field.
* @param isBoolean if the field is of type 'boolean'. For fields of type 'java.lang.Boolean', you should provide {@code false}.
*/
public static List<String> toAllWithByNames(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean) {
List<String> in = toAllAccessorNames(ast, accessors, fieldName, isBoolean, "with", "with", false);
if (!(in instanceof ArrayList)) in = new ArrayList<String>(in);
for (int i = 0; i < in.size(); i++) in.set(i, in.get(i) + "By");
return in;
}
private static List<String> toAllAccessorNames(AST<?, ?, ?> ast, AnnotationValues<Accessors> accessors, CharSequence fieldName, boolean isBoolean,
String booleanPrefix, String normalPrefix, boolean adhereToFluent) {
if (Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.GETTER_CONSEQUENT_BOOLEAN))) isBoolean = false;
if (!isBoolean) {
String accessorName = toAccessorName(ast, accessors, fieldName, false, booleanPrefix, normalPrefix, adhereToFluent);
return (accessorName == null) ? Collections.<String>emptyList() : Collections.singletonList(accessorName);
}
boolean explicitPrefix = accessors != null && accessors.isExplicit("prefix");
boolean explicitFluent = accessors != null && accessors.isExplicit("fluent");
boolean explicitJavaBeansSpecCapitalization = accessors != null && accessors.isExplicit("javaBeansSpecCapitalization");
Accessors ac = (explicitPrefix || explicitFluent || explicitJavaBeansSpecCapitalization) ? accessors.getInstance() : null;
List<String> prefix = explicitPrefix ? Arrays.asList(ac.prefix()) : ast.readConfiguration(ConfigurationKeys.ACCESSORS_PREFIX);
boolean fluent = explicitFluent ? ac.fluent() : Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.ACCESSORS_FLUENT));
boolean javaBeansSpecCapitalization = explicitJavaBeansSpecCapitalization ? ac.javaBeansSpecCapitalization() : Boolean.TRUE.equals(ast.readConfiguration(ConfigurationKeys.ACCESSORS_JAVA_BEANS_SPEC_CAPITALIZATION));
fieldName = removePrefix(fieldName, prefix);
if (fieldName == null) return Collections.emptyList();
List<String> baseNames = toBaseNames(fieldName, isBoolean, fluent);
Set<String> names = new HashSet<String>();
for (String baseName : baseNames) {
if (adhereToFluent && fluent) {
names.add(baseName);
} else {
names.add(buildAccessorName(normalPrefix, baseName, javaBeansSpecCapitalization));
if (!normalPrefix.equals(booleanPrefix)) names.add(buildAccessorName(booleanPrefix, baseName, javaBeansSpecCapitalization));
}
}
return new ArrayList<String>(names);
}
private static List<String> toBaseNames(CharSequence fieldName, boolean isBoolean, boolean fluent) {
List<String> baseNames = new ArrayList<String>();
baseNames.add(fieldName.toString());
// isPrefix = field is called something like 'isRunning', so 'running' could also be the fieldname.
String fName = fieldName.toString();
if (fName.startsWith("is") && fName.length() > 2 && !Character.isLowerCase(fName.charAt(2))) {
String baseName = fName.substring(2);
if (fluent) {
baseNames.add("" + Character.toLowerCase(baseName.charAt(0)) + baseName.substring(1));
} else {
baseNames.add(baseName);
}
}
return baseNames;
}
/**
* @param prefix Something like {@code get} or {@code set} or {@code is}.
* @param suffix Something like {@code running}.
* @return prefix + smartly title-cased suffix. For example, {@code setRunning}.
*/
public static String buildAccessorName(String prefix, String suffix) {
return buildAccessorName(prefix, suffix, false);
}
/**
* @param prefix Something like {@code get} or {@code set} or {@code is}.
* @param suffix Something like {@code running}.
* @param shouldFollowJavaBeansSpecCapitalization {@code boolean} that indicates whether the capitalization rules should follow JavaBeanSpec
* @return if shouldFollowJavaBeansSpecCapitalization is {@code true} and name start with only single lowercase letter, returns simple suffix+prefix. For example, {@code setaFieldName}
* otherwise, returns prefix + smartly title-cased suffix. For example, {@code setRunning}.
*/
private static String buildAccessorName(String prefix, String suffix, boolean shouldFollowJavaBeansSpecCapitalization) {
if (suffix.length() == 0) return prefix;
if (prefix.length() == 0) return suffix;
char first = suffix.charAt(0);
if (!Character.isLowerCase(first)) {
return String.format("%s%s", prefix, suffix);
}
boolean useUpperCase = suffix.length() > 2 &&
(Character.isTitleCase(suffix.charAt(1)) || Character.isUpperCase(suffix.charAt(1)));
if (shouldFollowJavaBeansSpecCapitalization && useUpperCase) {
return String.format("%s%s", prefix, suffix);
}
suffix = String.format("%s%s",
useUpperCase ? Character.toUpperCase(first) : Character.toTitleCase(first),
suffix.subSequence(1, suffix.length()));
return String.format("%s%s", prefix, suffix);
}
public static String camelCaseToConstant(String fieldName) {
if (fieldName == null || fieldName.isEmpty()) return "";
StringBuilder b = new StringBuilder();
b.append(Character.toUpperCase(fieldName.charAt(0)));
for (int i = 1; i < fieldName.length(); i++) {
char c = fieldName.charAt(i);
if (Character.isUpperCase(c)) b.append('_');
b.append(Character.toUpperCase(c));
}
return b.toString();
}
/** Matches any of the 8 primitive wrapper names, such as {@code Boolean}. */
private static final Pattern PRIMITIVE_WRAPPER_TYPE_NAME_PATTERN = Pattern.compile("^(?:java\\.lang\\.)?(?:Boolean|Byte|Short|Integer|Long|Float|Double|Character)$");
public static int defaultEqualsAndHashcodeIncludeRank(String typeName) {
// Modification in this code should be documented
// 1. In the changelog this should be marked as an INPROBABLE BREAKING CHANGE, since the hashcode will change
// 2. In the javadoc of EqualsAndHashcode.Include#rank
if (JavaIdentifiers.isPrimitive(typeName)) return 1000;
if (PRIMITIVE_WRAPPER_TYPE_NAME_PATTERN.matcher(typeName).matches()) return 800;
return 0;
}
private static final Pattern SECTION_FINDER = Pattern.compile("^\\s*\\**\\s*[-*][-*]+\\s*([GS]ETTER|WITH(?:ER)?)\\s*[-*][-*]+\\s*\\**\\s*$", Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
private static final Pattern LINE_BREAK_FINDER = Pattern.compile("(\\r?\\n)?");
public enum JavadocTag {
PARAM("@param(?:eter)?"),
RETURN("@returns?");
private Pattern pattern;
JavadocTag(String regexpFragment) {
pattern = Pattern.compile("\\s?^[ \\t]*\\**[ \\t]*" + regexpFragment + "(\\S|\\s)*?(?=(\\s^\\s*\\**\\s*@|\\Z))", Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
}
}
public static String stripLinesWithTagFromJavadoc(String javadoc, JavadocTag tag) {
if (javadoc == null || javadoc.isEmpty()) return javadoc;
return tag.pattern.matcher(javadoc).replaceAll("");
}
public static String stripSectionsFromJavadoc(String javadoc) {
if (javadoc == null || javadoc.isEmpty()) return javadoc;
Matcher sectionMatcher = SECTION_FINDER.matcher(javadoc);
if (!sectionMatcher.find()) return javadoc;
return javadoc.substring(0, sectionMatcher.start());
}
public static String getJavadocSection(String javadoc, String sectionNameSpec) {
if (javadoc == null || javadoc.isEmpty()) return null;
String[] sectionNames = sectionNameSpec.split("\\|");
Matcher sectionMatcher = SECTION_FINDER.matcher(javadoc);
Matcher lineBreakMatcher = LINE_BREAK_FINDER.matcher(javadoc);
int sectionStart = -1;
int sectionEnd = -1;
while (sectionMatcher.find()) {
boolean found = false;
for (String sectionName : sectionNames) if (sectionMatcher.group(1).equalsIgnoreCase(sectionName)) {
found = true;
break;
}
if (found) {
lineBreakMatcher.find(sectionMatcher.end());
sectionStart = lineBreakMatcher.end();
} else if (sectionStart != -1) {
sectionEnd = sectionMatcher.start();
}
}
if (sectionStart != -1) {
if (sectionEnd != -1) return javadoc.substring(sectionStart, sectionEnd);
return javadoc.substring(sectionStart);
}
return null;
}
private static final Pattern FIND_RETURN = Pattern.compile("^\\s*\\**\\s*@returns?\\s+.*$", Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
public static String addReturnsThisIfNeeded(String in) {
if (in != null && FIND_RETURN.matcher(in).find()) return in;
return addJavadocLine(in, "@return {@code this}.");
}
public static String addReturnsUpdatedSelfIfNeeded(String in) {
if (in != null && FIND_RETURN.matcher(in).find()) return in;
return addJavadocLine(in, "@return a clone of this object, except with this updated property (returns {@code this} if an identical value is passed).");
}
public static String addJavadocLine(String in, String line) {
if (in == null) return line;
if (in.endsWith("\n")) return in + line + "\n";
return in + "\n" + line;
}
public static String getParamJavadoc(String methodComment, String param) {
if (methodComment == null || methodComment.isEmpty()) return methodComment;
Pattern pattern = Pattern.compile("@param " + param + " (\\S|\\s)+?(?=^ ?@)", Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(methodComment);
if (matcher.find()) {
return matcher.group();
}
return null;
}
}