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6841422: classfile: add Type visitor

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Reviewed-by: mcimadamore
This commit is contained in:
Kevin Looney 2009-05-19 11:27:10 -07:00 committed by Jonathan Gibbons
parent ed2d2684f6
commit c1b42c6d84
1 changed files with 55 additions and 1 deletions
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56
langtools/src/share/classes/com/sun/tools/classfile/Type.java
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@ -25,7 +25,10 @@
package com.sun.tools.classfile;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/*
* <p><b>This is NOT part of any API supported by Sun Microsystems. If
@ -33,8 +36,9 @@ import java.util.List;
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class Type {
public abstract class Type {
protected Type() { }
public abstract <R,D> R accept(Visitor<R,D> visitor, D data);
protected static void append(StringBuilder sb, String prefix, List<? extends Type> types, String suffix) {
sb.append(prefix);
@ -52,11 +56,33 @@ public class Type {
append(sb, prefix, types, suffix);
}
public interface Visitor<R,P> {
R visitSimpleType(SimpleType type, P p);
R visitArrayType(ArrayType type, P p);
R visitMethodType(MethodType type, P p);
R visitClassSigType(ClassSigType type, P p);
R visitClassType(ClassType type, P p);
R visitInnerClassType(InnerClassType type, P p);
R visitTypeArgType(TypeArgType type, P p);
R visitWildcardType(WildcardType type, P p);
}
public static class SimpleType extends Type {
public SimpleType(String name) {
this.name = name;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitSimpleType(this, data);
}
public boolean isPrimitiveType() {
return primitiveTypes.contains(name);
}
// where
private static final Set<String> primitiveTypes = new HashSet<String>(Arrays.asList(
"boolean", "byte", "char", "double", "float", "int", "long", "short", "void"));
@Override
public String toString() {
return name;
@ -70,6 +96,10 @@ public class Type {
this.elemType = elemType;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitArrayType(this, data);
}
@Override
public String toString() {
return elemType + "[]";
@ -93,6 +123,10 @@ public class Type {
this.throwsTypes = throwsTypes;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitMethodType(this, data);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
@ -116,6 +150,10 @@ public class Type {
this.superinterfaceTypes = superinterfaceTypes;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitClassSigType(this, data);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
@ -139,6 +177,10 @@ public class Type {
this.typeArgs = typeArgs;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitClassType(this, data);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
@ -158,6 +200,10 @@ public class Type {
this.innerType = innerType;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitInnerClassType(this, data);
}
@Override
public String toString() {
return outerType + "." + innerType;
@ -174,6 +220,10 @@ public class Type {
this.interfaceBounds = interfaceBounds;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitTypeArgType(this, data);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
@ -209,6 +259,10 @@ public class Type {
this.boundType = boundType;
}
public <R, D> R accept(Visitor<R, D> visitor, D data) {
return visitor.visitWildcardType(this, data);
}
@Override
public String toString() {
if (kind == null)