org.jruby.util.CodegenUtils Maven / Gradle / Ivy
/*
* CodegenUtils.java
*
* Created on January 31, 2007, 11:54 AM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package org.jruby.util;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Type;
import javax.lang.model.element.Name;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
/**
*
* @author headius
*/
public class CodegenUtils {
/**
* Creates a dotted class name from a path/package name
*/
public static String c(String p) {
return p.replace('/', '.');
}
/**
* Creates a class path name, from a Class.
*/
public static String p(Class n) {
return n.getName().replace('.','/');
}
/**
* Creates a class identifier of form Labc/abc;, from a Class.
*/
public static String ci(Class n) {
if (n.isArray()) {
n = n.getComponentType();
if (n.isPrimitive()) {
if (n == Byte.TYPE) {
return "[B";
} else if (n == Boolean.TYPE) {
return "[Z";
} else if (n == Short.TYPE) {
return "[S";
} else if (n == Character.TYPE) {
return "[C";
} else if (n == Integer.TYPE) {
return "[I";
} else if (n == Float.TYPE) {
return "[F";
} else if (n == Double.TYPE) {
return "[D";
} else if (n == Long.TYPE) {
return "[J";
} else {
throw new RuntimeException("Unrecognized type in compiler: " + n.getName());
}
} else {
return "[" + ci(n);
}
} else {
if (n.isPrimitive()) {
if (n == Byte.TYPE) {
return "B";
} else if (n == Boolean.TYPE) {
return "Z";
} else if (n == Short.TYPE) {
return "S";
} else if (n == Character.TYPE) {
return "C";
} else if (n == Integer.TYPE) {
return "I";
} else if (n == Float.TYPE) {
return "F";
} else if (n == Double.TYPE) {
return "D";
} else if (n == Long.TYPE) {
return "J";
} else if (n == Void.TYPE) {
return "V";
} else {
throw new RuntimeException("Unrecognized type in compiler: " + n.getName());
}
} else {
return "L" + p(n) + ";";
}
}
}
/**
* Creates a human-readable representation, from a Class.
*/
public static String human(Class n) {
return n.getCanonicalName();
}
public static String humanShort(Class n) {
return n.getSimpleName();
}
/**
* Create a method signature from the given param types and return values
*/
public static String sig(Class retval, Class... params) {
return sigParams(new StringBuilder(), null, params).append( ci(retval) ).toString();
}
public static String sig(Class[] retvalParams) {
Class[] justParams = new Class[retvalParams.length - 1];
System.arraycopy(retvalParams, 1, justParams, 0, justParams.length);
return sigParams(new StringBuilder(), null, justParams).append( ci(retvalParams[0]) ).toString();
}
public static String sig(Class retval, String descriptor, Class... params) {
return sigParams(new StringBuilder(), descriptor, params).append( ci(retval) ).toString();
}
@Deprecated // not used
public static String sigParams(Class... params) {
return sigParams(new StringBuilder(), null, params).toString();
}
@Deprecated // not used
public static String sigParams(String descriptor, Class... params) {
return sigParams(new StringBuilder(), descriptor, params).toString();
}
private static StringBuilder sigParams(final StringBuilder str,
final String descriptor, final Class... params) {
str.append('(');
if ( descriptor != null ) str.append(descriptor);
for (int i = 0; i < params.length; i++) {
str.append( ci( params[i] ) );
}
return str.append(')');
}
public static String pretty(Class retval, Class... params) {
return prettyParams(params) + human(retval);
}
public static CharSequence prettyParams(final Class... types) {
return prettyParams(new StringBuilder(), types);
}
public static StringBuilder prettyParams(final StringBuilder str, final Class... types) {
final int len1 = types.length - 1;
str.append('(');
for ( int i = 0; i <= len1; i++ ) {
str.append( human( types[i] ) );
if ( i < len1 ) str.append(',');
}
return str.append(')');
}
public static String prettyShortParams(final Class... types) {
final int len1 = types.length - 1;
StringBuilder signature = new StringBuilder();
signature.append('(');
for (int i = 0; i <= len1; i++) {
signature.append( humanShort(types[i]) );
if ( i < len1 ) signature.append(',');
}
signature.append(')');
return signature.toString();
}
public static Class[] params(Class... classes) {
return classes;
}
public static Class[] params(Class cls, int times) {
Class[] classes = new Class[times];
Arrays.fill(classes, cls);
return classes;
}
public static Class[] params(Class cls1, Class clsFill, int times) {
Class[] classes = new Class[times + 1];
Arrays.fill(classes, clsFill);
classes[0] = cls1;
return classes;
}
public static Class[] params(Class cls1, Class cls2, Class clsFill, int times) {
Class[] classes = new Class[times + 2];
Arrays.fill(classes, clsFill);
classes[0] = cls1;
classes[1] = cls2;
return classes;
}
public static Class[] params(Class cls1, Class clsFill, int times, Class clsTail) {
Class[] classes = new Class[times + 2];
Arrays.fill(classes, clsFill);
classes[0] = cls1;
classes[times + 1] = clsTail;
return classes;
}
public static String getAnnotatedBindingClassName(Name javaMethodName, CharSequence typeName, boolean isStatic, int required, int optional, boolean multi, boolean framed) {
return getAnnotatedBindingClassName(javaMethodName.toString(), typeName, isStatic, required, optional, multi, framed);
}
public static String getAnnotatedBindingClassName(String javaMethodName, CharSequence typeName, boolean isStatic, int required, int optional, boolean multi, boolean framed) {
String commonClassSuffix = "$INVOKER" + (isStatic ? "$s$" : "$i$" );
if (multi) {
commonClassSuffix += javaMethodName;
} else {
commonClassSuffix += required + "$" + optional + "$" + javaMethodName;
}
return typeName + commonClassSuffix;
}
public static void visitAnnotationFields(AnnotationVisitor visitor, Map fields) {
try {
for (Map.Entry fieldEntry : fields.entrySet()) {
Object value = fieldEntry.getValue();
String key = fieldEntry.getKey();
if (value instanceof Map) {
@SuppressWarnings("unchecked")
Map> nestedAnnotationMap = (Map>) value;
for (Map.Entry> nestedAnnotation : nestedAnnotationMap.entrySet()) {
AnnotationVisitor annotationV;
annotationV = visitor.visitAnnotation(key, Type.getType(nestedAnnotation.getKey()).getDescriptor());
visitAnnotationFields(annotationV, nestedAnnotation.getValue());
annotationV.visitEnd();
}
} else if (value.getClass().isArray()) {
Object[] values = (Object[]) value;
AnnotationVisitor arrayV = visitor.visitArray(key);
for (int i = 0; i < values.length; i++) {
Map map = new HashMap();
map.put(null, values[i]);
visitAnnotationFields(arrayV, map);
}
arrayV.visitEnd();
} else if (value.getClass().isEnum()) {
visitor.visitEnum(key, ci(value.getClass()), value.toString());
} else if (value instanceof Class) {
visitor.visit(key, Type.getType((Class) value));
} else {
visitor.visit(key, value);
}
}
} catch (ClassCastException e) {
throw new InvalidAnnotationDescriptorException("Fields "
+ fields
+ " did not match annotation format. See CodegenUtils#visitAnnotationFields for format",
e);
}
}
public static Class getBoxType(Class type) {
if (type == int.class) {
return Integer.class;
} else if (type == byte.class) {
return Byte.class;
} else if (type == short.class) {
return Short.class;
} else if (type == char.class) {
return Character.class;
} else if (type == long.class) {
return Long.class;
} else if (type == float.class) {
return Float.class;
} else if (type == double.class) {
return Double.class;
} else if (type == boolean.class) {
return Boolean.class;
} else if (type == void.class) {
return Void.class;
} else {
throw new RuntimeException("Not a native type: " + type);
}
}
public static class InvalidAnnotationDescriptorException extends RuntimeException {
public InvalidAnnotationDescriptorException() {
}
public InvalidAnnotationDescriptorException(String s) {
super(s);
}
public InvalidAnnotationDescriptorException(String s, Throwable throwable) {
super(s, throwable);
}
public InvalidAnnotationDescriptorException(Throwable throwable) {
super(throwable);
}
}
}
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