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-rw-r--r--src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java116
1 files changed, 68 insertions, 48 deletions
diff --git a/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java b/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
index 00601b56..9869cf94 100644
--- a/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
+++ b/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2009-2011 The Project Lombok Authors.
+ * Copyright (C) 2009-2012 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
@@ -21,17 +21,19 @@
*/
package lombok.javac.handlers;
-import static lombok.javac.handlers.JavacHandlerUtil.*;
import static lombok.javac.Javac.getCtcInt;
+import static lombok.javac.handlers.JavacHandlerUtil.*;
import java.util.ArrayList;
import java.util.Collections;
import lombok.EqualsAndHashCode;
-import lombok.core.AnnotationValues;
import lombok.core.AST.Kind;
+import lombok.core.AnnotationValues;
import lombok.javac.JavacAnnotationHandler;
import lombok.javac.JavacNode;
+import lombok.javac.handlers.JavacHandlerUtil.FieldAccess;
+import lombok.javac.handlers.JavacHandlerUtil.MemberExistsResult;
import org.mangosdk.spi.ProviderFor;
@@ -39,13 +41,13 @@ import com.sun.tools.javac.code.BoundKind;
import com.sun.tools.javac.code.Flags;
import com.sun.tools.javac.code.TypeTags;
import com.sun.tools.javac.tree.JCTree;
-import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.tree.JCTree.JCAnnotation;
import com.sun.tools.javac.tree.JCTree.JCArrayTypeTree;
import com.sun.tools.javac.tree.JCTree.JCBinary;
import com.sun.tools.javac.tree.JCTree.JCBlock;
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
import com.sun.tools.javac.tree.JCTree.JCExpression;
+import com.sun.tools.javac.tree.JCTree.JCExpressionStatement;
import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
import com.sun.tools.javac.tree.JCTree.JCMethodInvocation;
import com.sun.tools.javac.tree.JCTree.JCModifiers;
@@ -54,6 +56,7 @@ import com.sun.tools.javac.tree.JCTree.JCStatement;
import com.sun.tools.javac.tree.JCTree.JCTypeParameter;
import com.sun.tools.javac.tree.JCTree.JCUnary;
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
+import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.util.List;
import com.sun.tools.javac.util.ListBuffer;
import com.sun.tools.javac.util.Name;
@@ -63,6 +66,9 @@ import com.sun.tools.javac.util.Name;
*/
@ProviderFor(JavacAnnotationHandler.class)
public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHashCode> {
+ private static final String RESULT_NAME = "result";
+ private static final String PRIME_NAME = "PRIME";
+
private void checkForBogusFieldNames(JavacNode type, AnnotationValues<EqualsAndHashCode> annotation) {
if (annotation.isExplicit("exclude")) {
for (int i : createListOfNonExistentFields(List.from(annotation.getInstance().exclude()), type, true, true)) {
@@ -214,8 +220,8 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
JCExpression returnType = maker.TypeIdent(getCtcInt(TypeTags.class, "INT"));
ListBuffer<JCStatement> statements = ListBuffer.lb();
- Name primeName = typeNode.toName("PRIME");
- Name resultName = typeNode.toName("result");
+ Name primeName = typeNode.toName(PRIME_NAME);
+ Name resultName = typeNode.toName(RESULT_NAME);
/* final int PRIME = 31; */ {
if (!fields.isEmpty() || callSuper) {
statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL),
@@ -227,16 +233,14 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
statements.append(maker.VarDef(maker.Modifiers(0), resultName, maker.TypeIdent(getCtcInt(TypeTags.class, "INT")), maker.Literal(1)));
}
- ListBuffer<JCExpression> intoResult = ListBuffer.lb();
-
if (callSuper) {
JCMethodInvocation callToSuper = maker.Apply(List.<JCExpression>nil(),
maker.Select(maker.Ident(typeNode.toName("super")), typeNode.toName("hashCode")),
List.<JCExpression>nil());
- intoResult.append(callToSuper);
+ statements.append(createResultCalculation(typeNode, callToSuper));
}
- int tempCounter = 0;
+ Name dollar = typeNode.toName("$");
for (JavacNode fieldNode : fields) {
JCExpression fType = getFieldType(fieldNode, fieldAccess);
JCExpression fieldAccessor = createFieldAccessor(maker, fieldNode, fieldAccess);
@@ -244,28 +248,31 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
switch (((JCPrimitiveTypeTree)fType).getPrimitiveTypeKind()) {
case BOOLEAN:
/* this.fieldName ? 1231 : 1237 */
- intoResult.append(maker.Conditional(fieldAccessor, maker.Literal(1231), maker.Literal(1237)));
+ statements.append(createResultCalculation(typeNode, maker.Conditional(fieldAccessor, maker.Literal(1231), maker.Literal(1237))));
break;
- case LONG:
- intoResult.append(longToIntForHashCode(maker, fieldAccessor, createFieldAccessor(maker, fieldNode, fieldAccess)));
+ case LONG: {
+ Name dollarFieldName = dollar.append(((JCVariableDecl)fieldNode.get()).name);
+ statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL), dollarFieldName, maker.TypeIdent(TypeTags.LONG), fieldAccessor));
+ statements.append(createResultCalculation(typeNode, longToIntForHashCode(maker, maker.Ident(dollarFieldName), maker.Ident(dollarFieldName))));
+ }
break;
case FLOAT:
/* Float.floatToIntBits(this.fieldName) */
- intoResult.append(maker.Apply(
+ statements.append(createResultCalculation(typeNode, maker.Apply(
List.<JCExpression>nil(),
chainDots(typeNode, "java", "lang", "Float", "floatToIntBits"),
- List.of(fieldAccessor)));
+ List.of(fieldAccessor))));
break;
- case DOUBLE:
- /* longToIntForHashCode(Double.doubleToLongBits(this.fieldName)) */
- Name tempVar = typeNode.toName("temp" + (++tempCounter));
- JCExpression init = maker.Apply(
- List.<JCExpression>nil(),
- chainDots(typeNode, "java", "lang", "Double", "doubleToLongBits"),
- List.of(fieldAccessor));
- statements.append(
- maker.VarDef(maker.Modifiers(Flags.FINAL), tempVar, maker.TypeIdent(TypeTags.LONG), init));
- intoResult.append(longToIntForHashCode(maker, maker.Ident(tempVar), maker.Ident(tempVar)));
+ case DOUBLE: {
+ /* longToIntForHashCode(Double.doubleToLongBits(this.fieldName)) */
+ Name dollarFieldName = dollar.append(((JCVariableDecl)fieldNode.get()).name);
+ JCExpression init = maker.Apply(
+ List.<JCExpression>nil(),
+ chainDots(typeNode, "java", "lang", "Double", "doubleToLongBits"),
+ List.of(fieldAccessor));
+ statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL), dollarFieldName, maker.TypeIdent(TypeTags.LONG), init));
+ statements.append(createResultCalculation(typeNode, longToIntForHashCode(maker, maker.Ident(dollarFieldName), maker.Ident(dollarFieldName))));
+ }
break;
default:
case BYTE:
@@ -273,7 +280,7 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
case INT:
case CHAR:
/* just the field */
- intoResult.append(fieldAccessor);
+ statements.append(createResultCalculation(typeNode, fieldAccessor));
break;
}
} else if (fType instanceof JCArrayTypeTree) {
@@ -283,26 +290,21 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
boolean useDeepHC = multiDim || !primitiveArray;
JCExpression hcMethod = chainDots(typeNode, "java", "util", "Arrays", useDeepHC ? "deepHashCode" : "hashCode");
- intoResult.append(
- maker.Apply(List.<JCExpression>nil(), hcMethod, List.of(fieldAccessor)));
+ statements.append(createResultCalculation(typeNode, maker.Apply(List.<JCExpression>nil(), hcMethod, List.of(fieldAccessor))));
} else /* objects */ {
- /* this.fieldName == null ? 0 : this.fieldName.hashCode() */
- JCExpression hcCall = maker.Apply(List.<JCExpression>nil(), maker.Select(createFieldAccessor(maker, fieldNode, fieldAccess), typeNode.toName("hashCode")),
+ /* final java.lang.Object $fieldName = this.fieldName; */
+ /* $fieldName == null ? 0 : $fieldName.hashCode() */
+
+ Name dollarFieldName = dollar.append(((JCVariableDecl)fieldNode.get()).name);
+ statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL), dollarFieldName, chainDots(typeNode, "java", "lang", "Object"), fieldAccessor));
+
+ JCExpression hcCall = maker.Apply(List.<JCExpression>nil(), maker.Select(maker.Ident(dollarFieldName), typeNode.toName("hashCode")),
List.<JCExpression>nil());
- JCExpression thisEqualsNull = maker.Binary(getCtcInt(JCTree.class, "EQ"), fieldAccessor, maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
- intoResult.append(
- maker.Conditional(thisEqualsNull, maker.Literal(0), hcCall));
+ JCExpression thisEqualsNull = maker.Binary(getCtcInt(JCTree.class, "EQ"), maker.Ident(dollarFieldName), maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
+ statements.append(createResultCalculation(typeNode, maker.Conditional(thisEqualsNull, maker.Literal(0), hcCall)));
}
}
- /* fold each intoResult entry into:
- result = result * PRIME + (item); */
- for (JCExpression expr : intoResult) {
- JCExpression mult = maker.Binary(getCtcInt(JCTree.class, "MUL"), maker.Ident(resultName), maker.Ident(primeName));
- JCExpression add = maker.Binary(getCtcInt(JCTree.class, "PLUS"), mult, expr);
- statements.append(maker.Exec(maker.Assign(maker.Ident(resultName), add)));
- }
-
/* return result; */ {
statements.append(maker.Return(maker.Ident(resultName)));
}
@@ -311,6 +313,15 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
return recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName("hashCode"), returnType,
List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null), source);
}
+
+ private JCExpressionStatement createResultCalculation(JavacNode typeNode, JCExpression expr) {
+ /* result = result * PRIME + (expr); */
+ TreeMaker maker = typeNode.getTreeMaker();
+ Name resultName = typeNode.toName(RESULT_NAME);
+ JCExpression mult = maker.Binary(getCtcInt(JCTree.class, "MUL"), maker.Ident(resultName), maker.Ident(typeNode.toName(PRIME_NAME)));
+ JCExpression add = maker.Binary(getCtcInt(JCTree.class, "PLUS"), mult, expr);
+ return maker.Exec(maker.Assign(maker.Ident(resultName), add));
+ }
/** The 2 references must be clones of each other. */
private JCExpression longToIntForHashCode(TreeMaker maker, JCExpression ref1, JCExpression ref2) {
@@ -410,6 +421,8 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
statements.append(maker.If(superNotEqual, returnBool(maker, false), null));
}
+ Name thisDollar = typeNode.toName("this$");
+ Name otherDollar = typeNode.toName("other$");
for (JavacNode fieldNode : fields) {
JCExpression fType = getFieldType(fieldNode, fieldAccess);
JCExpression thisFieldAccessor = createFieldAccessor(maker, fieldNode, fieldAccess);
@@ -441,14 +454,21 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
statements.append(maker.If(maker.Unary(getCtcInt(JCTree.class, "NOT"),
maker.Apply(List.<JCExpression>nil(), eqMethod, args)), returnBool(maker, false), null));
} else /* objects */ {
- /* if (this.fieldName == null ? other.fieldName != null : !this.fieldName.equals(other.fieldName)) return false; */
- JCExpression thisEqualsNull = maker.Binary(getCtcInt(JCTree.class, "EQ"), thisFieldAccessor, maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
- JCExpression otherNotEqualsNull = maker.Binary(getCtcInt(JCTree.class, "NE"), otherFieldAccessor, maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
- JCExpression equalsArg = createFieldAccessor(maker, fieldNode, fieldAccess, maker.Ident(otherName));
- JCExpression castEqualsArg = maker.TypeCast(chainDots(typeNode, "java", "lang", "Object"), equalsArg);
+ /* final java.lang.Object this$fieldName = this.fieldName; */
+ /* final java.lang.Object other$fieldName = other.fieldName; */
+ /* if (this$fieldName == null ? other$fieldName != null : !this$fieldName.equals(other$fieldName)) return false;; */
+ Name fieldName = ((JCVariableDecl)fieldNode.get()).name;
+ Name thisDollarFieldName = thisDollar.append(fieldName);
+ Name otherDollarFieldName = otherDollar.append(fieldName);
+
+ statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL), thisDollarFieldName, chainDots(typeNode, "java", "lang", "Object"), thisFieldAccessor));
+ statements.append(maker.VarDef(maker.Modifiers(Flags.FINAL), otherDollarFieldName, chainDots(typeNode, "java", "lang", "Object"), otherFieldAccessor));
+
+ JCExpression thisEqualsNull = maker.Binary(getCtcInt(JCTree.class, "EQ"), maker.Ident(thisDollarFieldName), maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
+ JCExpression otherNotEqualsNull = maker.Binary(getCtcInt(JCTree.class, "NE"), maker.Ident(otherDollarFieldName), maker.Literal(getCtcInt(TypeTags.class, "BOT"), null));
JCExpression thisEqualsThat = maker.Apply(List.<JCExpression>nil(),
- maker.Select(createFieldAccessor(maker, fieldNode, fieldAccess), typeNode.toName("equals")),
- List.of(castEqualsArg));
+ maker.Select(maker.Ident(thisDollarFieldName), typeNode.toName("equals")),
+ List.<JCExpression>of(maker.Ident(otherDollarFieldName)));
JCExpression fieldsAreNotEqual = maker.Conditional(thisEqualsNull, otherNotEqualsNull, maker.Unary(getCtcInt(JCTree.class, "NOT"), thisEqualsThat));
statements.append(maker.If(fieldsAreNotEqual, returnBool(maker, false), null));
}
generated by cgit (git 2.46.0) at 2024-12-21 16:34:03 +0000