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scala.tools.asm.util.Printer Maven / Gradle / Ivy
// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package scala.tools.asm.util;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import scala.tools.asm.Attribute;
import scala.tools.asm.ClassReader;
import scala.tools.asm.ConstantDynamic;
import scala.tools.asm.Handle;
import scala.tools.asm.Label;
import scala.tools.asm.Opcodes;
import scala.tools.asm.Type;
import scala.tools.asm.TypePath;
import scala.tools.asm.TypeReference;
/**
* An abstract converter from visit events to text.
*
* @author Eric Bruneton
*/
public abstract class Printer {
/** The names of the Java Virtual Machine opcodes. */
public static final String[] OPCODES = {
"NOP", // 0 (0x0)
"ACONST_NULL", // 1 (0x1)
"ICONST_M1", // 2 (0x2)
"ICONST_0", // 3 (0x3)
"ICONST_1", // 4 (0x4)
"ICONST_2", // 5 (0x5)
"ICONST_3", // 6 (0x6)
"ICONST_4", // 7 (0x7)
"ICONST_5", // 8 (0x8)
"LCONST_0", // 9 (0x9)
"LCONST_1", // 10 (0xa)
"FCONST_0", // 11 (0xb)
"FCONST_1", // 12 (0xc)
"FCONST_2", // 13 (0xd)
"DCONST_0", // 14 (0xe)
"DCONST_1", // 15 (0xf)
"BIPUSH", // 16 (0x10)
"SIPUSH", // 17 (0x11)
"LDC", // 18 (0x12)
"LDC_W", // 19 (0x13)
"LDC2_W", // 20 (0x14)
"ILOAD", // 21 (0x15)
"LLOAD", // 22 (0x16)
"FLOAD", // 23 (0x17)
"DLOAD", // 24 (0x18)
"ALOAD", // 25 (0x19)
"ILOAD_0", // 26 (0x1a)
"ILOAD_1", // 27 (0x1b)
"ILOAD_2", // 28 (0x1c)
"ILOAD_3", // 29 (0x1d)
"LLOAD_0", // 30 (0x1e)
"LLOAD_1", // 31 (0x1f)
"LLOAD_2", // 32 (0x20)
"LLOAD_3", // 33 (0x21)
"FLOAD_0", // 34 (0x22)
"FLOAD_1", // 35 (0x23)
"FLOAD_2", // 36 (0x24)
"FLOAD_3", // 37 (0x25)
"DLOAD_0", // 38 (0x26)
"DLOAD_1", // 39 (0x27)
"DLOAD_2", // 40 (0x28)
"DLOAD_3", // 41 (0x29)
"ALOAD_0", // 42 (0x2a)
"ALOAD_1", // 43 (0x2b)
"ALOAD_2", // 44 (0x2c)
"ALOAD_3", // 45 (0x2d)
"IALOAD", // 46 (0x2e)
"LALOAD", // 47 (0x2f)
"FALOAD", // 48 (0x30)
"DALOAD", // 49 (0x31)
"AALOAD", // 50 (0x32)
"BALOAD", // 51 (0x33)
"CALOAD", // 52 (0x34)
"SALOAD", // 53 (0x35)
"ISTORE", // 54 (0x36)
"LSTORE", // 55 (0x37)
"FSTORE", // 56 (0x38)
"DSTORE", // 57 (0x39)
"ASTORE", // 58 (0x3a)
"ISTORE_0", // 59 (0x3b)
"ISTORE_1", // 60 (0x3c)
"ISTORE_2", // 61 (0x3d)
"ISTORE_3", // 62 (0x3e)
"LSTORE_0", // 63 (0x3f)
"LSTORE_1", // 64 (0x40)
"LSTORE_2", // 65 (0x41)
"LSTORE_3", // 66 (0x42)
"FSTORE_0", // 67 (0x43)
"FSTORE_1", // 68 (0x44)
"FSTORE_2", // 69 (0x45)
"FSTORE_3", // 70 (0x46)
"DSTORE_0", // 71 (0x47)
"DSTORE_1", // 72 (0x48)
"DSTORE_2", // 73 (0x49)
"DSTORE_3", // 74 (0x4a)
"ASTORE_0", // 75 (0x4b)
"ASTORE_1", // 76 (0x4c)
"ASTORE_2", // 77 (0x4d)
"ASTORE_3", // 78 (0x4e)
"IASTORE", // 79 (0x4f)
"LASTORE", // 80 (0x50)
"FASTORE", // 81 (0x51)
"DASTORE", // 82 (0x52)
"AASTORE", // 83 (0x53)
"BASTORE", // 84 (0x54)
"CASTORE", // 85 (0x55)
"SASTORE", // 86 (0x56)
"POP", // 87 (0x57)
"POP2", // 88 (0x58)
"DUP", // 89 (0x59)
"DUP_X1", // 90 (0x5a)
"DUP_X2", // 91 (0x5b)
"DUP2", // 92 (0x5c)
"DUP2_X1", // 93 (0x5d)
"DUP2_X2", // 94 (0x5e)
"SWAP", // 95 (0x5f)
"IADD", // 96 (0x60)
"LADD", // 97 (0x61)
"FADD", // 98 (0x62)
"DADD", // 99 (0x63)
"ISUB", // 100 (0x64)
"LSUB", // 101 (0x65)
"FSUB", // 102 (0x66)
"DSUB", // 103 (0x67)
"IMUL", // 104 (0x68)
"LMUL", // 105 (0x69)
"FMUL", // 106 (0x6a)
"DMUL", // 107 (0x6b)
"IDIV", // 108 (0x6c)
"LDIV", // 109 (0x6d)
"FDIV", // 110 (0x6e)
"DDIV", // 111 (0x6f)
"IREM", // 112 (0x70)
"LREM", // 113 (0x71)
"FREM", // 114 (0x72)
"DREM", // 115 (0x73)
"INEG", // 116 (0x74)
"LNEG", // 117 (0x75)
"FNEG", // 118 (0x76)
"DNEG", // 119 (0x77)
"ISHL", // 120 (0x78)
"LSHL", // 121 (0x79)
"ISHR", // 122 (0x7a)
"LSHR", // 123 (0x7b)
"IUSHR", // 124 (0x7c)
"LUSHR", // 125 (0x7d)
"IAND", // 126 (0x7e)
"LAND", // 127 (0x7f)
"IOR", // 128 (0x80)
"LOR", // 129 (0x81)
"IXOR", // 130 (0x82)
"LXOR", // 131 (0x83)
"IINC", // 132 (0x84)
"I2L", // 133 (0x85)
"I2F", // 134 (0x86)
"I2D", // 135 (0x87)
"L2I", // 136 (0x88)
"L2F", // 137 (0x89)
"L2D", // 138 (0x8a)
"F2I", // 139 (0x8b)
"F2L", // 140 (0x8c)
"F2D", // 141 (0x8d)
"D2I", // 142 (0x8e)
"D2L", // 143 (0x8f)
"D2F", // 144 (0x90)
"I2B", // 145 (0x91)
"I2C", // 146 (0x92)
"I2S", // 147 (0x93)
"LCMP", // 148 (0x94)
"FCMPL", // 149 (0x95)
"FCMPG", // 150 (0x96)
"DCMPL", // 151 (0x97)
"DCMPG", // 152 (0x98)
"IFEQ", // 153 (0x99)
"IFNE", // 154 (0x9a)
"IFLT", // 155 (0x9b)
"IFGE", // 156 (0x9c)
"IFGT", // 157 (0x9d)
"IFLE", // 158 (0x9e)
"IF_ICMPEQ", // 159 (0x9f)
"IF_ICMPNE", // 160 (0xa0)
"IF_ICMPLT", // 161 (0xa1)
"IF_ICMPGE", // 162 (0xa2)
"IF_ICMPGT", // 163 (0xa3)
"IF_ICMPLE", // 164 (0xa4)
"IF_ACMPEQ", // 165 (0xa5)
"IF_ACMPNE", // 166 (0xa6)
"GOTO", // 167 (0xa7)
"JSR", // 168 (0xa8)
"RET", // 169 (0xa9)
"TABLESWITCH", // 170 (0xaa)
"LOOKUPSWITCH", // 171 (0xab)
"IRETURN", // 172 (0xac)
"LRETURN", // 173 (0xad)
"FRETURN", // 174 (0xae)
"DRETURN", // 175 (0xaf)
"ARETURN", // 176 (0xb0)
"RETURN", // 177 (0xb1)
"GETSTATIC", // 178 (0xb2)
"PUTSTATIC", // 179 (0xb3)
"GETFIELD", // 180 (0xb4)
"PUTFIELD", // 181 (0xb5)
"INVOKEVIRTUAL", // 182 (0xb6)
"INVOKESPECIAL", // 183 (0xb7)
"INVOKESTATIC", // 184 (0xb8)
"INVOKEINTERFACE", // 185 (0xb9)
"INVOKEDYNAMIC", // 186 (0xba)
"NEW", // 187 (0xbb)
"NEWARRAY", // 188 (0xbc)
"ANEWARRAY", // 189 (0xbd)
"ARRAYLENGTH", // 190 (0xbe)
"ATHROW", // 191 (0xbf)
"CHECKCAST", // 192 (0xc0)
"INSTANCEOF", // 193 (0xc1)
"MONITORENTER", // 194 (0xc2)
"MONITOREXIT", // 195 (0xc3)
"WIDE", // 196 (0xc4)
"MULTIANEWARRAY", // 197 (0xc5)
"IFNULL", // 198 (0xc6)
"IFNONNULL" // 199 (0xc7)
};
/**
* The names of the {@code operand} values of the {@link
* scala.tools.asm.MethodVisitor#visitIntInsn} method when {@code opcode} is {@code NEWARRAY}.
*/
public static final String[] TYPES = {
"",
"",
"",
"",
"T_BOOLEAN",
"T_CHAR",
"T_FLOAT",
"T_DOUBLE",
"T_BYTE",
"T_SHORT",
"T_INT",
"T_LONG"
};
/** The names of the {@code tag} field values for {@link scala.tools.asm.Handle}. */
public static final String[] HANDLE_TAG = {
"",
"H_GETFIELD",
"H_GETSTATIC",
"H_PUTFIELD",
"H_PUTSTATIC",
"H_INVOKEVIRTUAL",
"H_INVOKESTATIC",
"H_INVOKESPECIAL",
"H_NEWINVOKESPECIAL",
"H_INVOKEINTERFACE"
};
/** Message of the UnsupportedOperationException thrown by methods which must be overridden. */
private static final String UNSUPPORTED_OPERATION = "Must be overridden";
/**
* The ASM API version implemented by this class. The value of this field must be one of the
* {@code ASM}x values in {@link Opcodes}.
*/
protected final int api;
/** The builder used to build strings in the various visit methods. */
protected final StringBuilder stringBuilder;
/**
* The text to be printed. Since the code of methods is not necessarily visited in sequential
* order, one method after the other, but can be interlaced (some instructions from method one,
* then some instructions from method two, then some instructions from method one again...), it is
* not possible to print the visited instructions directly to a sequential stream. A class is
* therefore printed in a two steps process: a string tree is constructed during the visit, and
* printed to a sequential stream at the end of the visit. This string tree is stored in this
* field, as a string list that can contain other string lists, which can themselves contain other
* string lists, and so on.
*/
public final List text;
// -----------------------------------------------------------------------------------------------
// Constructor
// -----------------------------------------------------------------------------------------------
/**
* Constructs a new {@link Printer}.
*
* @param api the ASM API version implemented by this printer. Must be one of the {@code
* ASM}x values in {@link Opcodes}.
*/
protected Printer(final int api) {
this.api = api;
this.stringBuilder = new StringBuilder();
this.text = new ArrayList<>();
}
// -----------------------------------------------------------------------------------------------
// Classes
// -----------------------------------------------------------------------------------------------
/**
* Class header. See {@link scala.tools.asm.ClassVisitor#visit}.
*
* @param version the class version. The minor version is stored in the 16 most significant bits,
* and the major version in the 16 least significant bits.
* @param access the class's access flags (see {@link Opcodes}). This parameter also indicates if
* the class is deprecated.
* @param name the internal name of the class (see {@link Type#getInternalName()}).
* @param signature the signature of this class. May be {@literal null} if the class is not a
* generic one, and does not extend or implement generic classes or interfaces.
* @param superName the internal of name of the super class (see {@link Type#getInternalName()}).
* For interfaces, the super class is {@link Object}. May be {@literal null}, but only for the
* {@link Object} class.
* @param interfaces the internal names of the class's interfaces (see {@link
* Type#getInternalName()}). May be {@literal null}.
*/
public abstract void visit(
int version,
int access,
String name,
String signature,
String superName,
String[] interfaces);
/**
* Class source. See {@link scala.tools.asm.ClassVisitor#visitSource}.
*
* @param source the name of the source file from which the class was compiled. May be {@literal
* null}.
* @param debug additional debug information to compute the correspondence between source and
* compiled elements of the class. May be {@literal null}.
*/
public abstract void visitSource(String source, String debug);
/**
* Module. See {@link scala.tools.asm.ClassVisitor#visitModule}.
*
* @param name the fully qualified name (using dots) of the module.
* @param access the module access flags, among {@code ACC_OPEN}, {@code ACC_SYNTHETIC} and {@code
* ACC_MANDATED}.
* @param version the module version, or {@literal null}.
* @return the printer.
*/
public Printer visitModule(final String name, final int access, final String version) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Visits the nest host class of the class. A nest is a set of classes of the same package that
* share access to their private members. One of these classes, called the host, lists the other
* members of the nest, which in turn should link to the host of their nest. This method must be
* called only once and only if the visited class is a non-host member of a nest. A class is
* implicitly its own nest, so it's invalid to call this method with the visited class name as
* argument.
*
* @param nestHost the internal name of the host class of the nest (see {@link
* Type#getInternalName()}).
*/
public void visitNestHost(final String nestHost) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Class outer class. See {@link scala.tools.asm.ClassVisitor#visitOuterClass}.
*
* @param owner internal name of the enclosing class of the class (see {@link
* Type#getInternalName()}).
* @param name the name of the method that contains the class, or {@literal null} if the class is
* not enclosed in a method of its enclosing class.
* @param descriptor the descriptor of the method that contains the class, or {@literal null} if
* the class is not enclosed in a method of its enclosing class.
*/
public abstract void visitOuterClass(String owner, String name, String descriptor);
/**
* Class annotation. See {@link scala.tools.asm.ClassVisitor#visitAnnotation}.
*
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public abstract Printer visitClassAnnotation(String descriptor, boolean visible);
/**
* Class type annotation. See {@link scala.tools.asm.ClassVisitor#visitTypeAnnotation}.
*
* @param typeRef a reference to the annotated type. The sort of this type reference must be
* {@link TypeReference#CLASS_TYPE_PARAMETER}, {@link
* TypeReference#CLASS_TYPE_PARAMETER_BOUND} or {@link TypeReference#CLASS_EXTENDS}. See
* {@link TypeReference}.
* @param typePath the path to the annotated type argument, wildcard bound, array element type, or
* static inner type within 'typeRef'. May be {@literal null} if the annotation targets
* 'typeRef' as a whole.
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public Printer visitClassTypeAnnotation(
final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Class attribute. See {@link scala.tools.asm.ClassVisitor#visitAttribute}.
*
* @param attribute an attribute.
*/
public abstract void visitClassAttribute(Attribute attribute);
/**
* Visits a member of the nest. A nest is a set of classes of the same package that share access
* to their private members. One of these classes, called the host, lists the other members of the
* nest, which in turn should link to the host of their nest. This method must be called only if
* the visited class is the host of a nest. A nest host is implicitly a member of its own nest, so
* it's invalid to call this method with the visited class name as argument.
*
* @param nestMember the internal name of a nest member (see {@link Type#getInternalName()}).
*/
public void visitNestMember(final String nestMember) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Visits a permitted subclasses. A permitted subclass is one of the allowed subclasses of the
* current class. See {@link scala.tools.asm.ClassVisitor#visitPermittedSubclass(String)}.
*
* @param permittedSubclass the internal name of a permitted subclass (see {@link
* Type#getInternalName()}).
*/
public void visitPermittedSubclass(final String permittedSubclass) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Class inner name. See {@link scala.tools.asm.ClassVisitor#visitInnerClass}.
*
* @param name the internal name of an inner class (see {@link Type#getInternalName()}).
* @param outerName the internal name of the class to which the inner class belongs (see {@link
* Type#getInternalName()}). May be {@literal null} for not member classes.
* @param innerName the (simple) name of the inner class inside its enclosing class. May be
* {@literal null} for anonymous inner classes.
* @param access the access flags of the inner class as originally declared in the enclosing
* class.
*/
public abstract void visitInnerClass(String name, String outerName, String innerName, int access);
/**
* Visits a record component of the class. See {@link
* scala.tools.asm.ClassVisitor#visitRecordComponent(String, String, String)}.
*
* @param name the field's name.
* @param descriptor the record component descriptor (see {@link Type}).
* @param signature the record component signature. May be {@literal null} if the record component
* type does not use generic types.
* @return a visitor to visit this record component annotations and attributes, or {@literal null}
* if this class visitor is not interested in visiting these annotations and attributes.
*/
public Printer visitRecordComponent(
final String name, final String descriptor, final String signature) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Class field. See {@link scala.tools.asm.ClassVisitor#visitField}.
*
* @param access the field's access flags (see {@link Opcodes}). This parameter also indicates if
* the field is synthetic and/or deprecated.
* @param name the field's name.
* @param descriptor the field's descriptor (see {@link Type}).
* @param signature the field's signature. May be {@literal null} if the field's type does not use
* generic types.
* @param value the field's initial value. This parameter, which may be {@literal null} if the
* field does not have an initial value, must be an {@link Integer}, a {@link Float}, a {@link
* Long}, a {@link Double} or a {@link String} (for {@code int}, {@code float}, {@code long}
* or {@code String} fields respectively). This parameter is only used for static
* fields . Its value is ignored for non static fields, which must be initialized through
* bytecode instructions in constructors or methods.
* @return the printer.
*/
public abstract Printer visitField(
int access, String name, String descriptor, String signature, Object value);
/**
* Class method. See {@link scala.tools.asm.ClassVisitor#visitMethod}.
*
* @param access the method's access flags (see {@link Opcodes}). This parameter also indicates if
* the method is synthetic and/or deprecated.
* @param name the method's name.
* @param descriptor the method's descriptor (see {@link Type}).
* @param signature the method's signature. May be {@literal null} if the method parameters,
* return type and exceptions do not use generic types.
* @param exceptions the internal names of the method's exception classes (see {@link
* Type#getInternalName()}). May be {@literal null}.
* @return the printer.
*/
public abstract Printer visitMethod(
int access, String name, String descriptor, String signature, String[] exceptions);
/** Class end. See {@link scala.tools.asm.ClassVisitor#visitEnd}. */
public abstract void visitClassEnd();
// -----------------------------------------------------------------------------------------------
// Modules
// -----------------------------------------------------------------------------------------------
/**
* Module main class. See {@link scala.tools.asm.ModuleVisitor#visitMainClass}.
*
* @param mainClass the internal name of the main class of the current module (see {@link
* Type#getInternalName()}).
*/
public void visitMainClass(final String mainClass) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module package. See {@link scala.tools.asm.ModuleVisitor#visitPackage}.
*
* @param packaze the internal name of a package (see {@link Type#getInternalName()}).
*/
public void visitPackage(final String packaze) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module require. See {@link scala.tools.asm.ModuleVisitor#visitRequire}.
*
* @param module the fully qualified name (using dots) of the dependence.
* @param access the access flag of the dependence among {@code ACC_TRANSITIVE}, {@code
* ACC_STATIC_PHASE}, {@code ACC_SYNTHETIC} and {@code ACC_MANDATED}.
* @param version the module version at compile time, or {@literal null}.
*/
public void visitRequire(final String module, final int access, final String version) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module export. See {@link scala.tools.asm.ModuleVisitor#visitExport}.
*
* @param packaze the internal name of the exported package (see {@link Type#getInternalName()}).
* @param access the access flag of the exported package, valid values are among {@code
* ACC_SYNTHETIC} and {@code ACC_MANDATED}.
* @param modules the fully qualified names (using dots) of the modules that can access the public
* classes of the exported package, or {@literal null}.
*/
public void visitExport(final String packaze, final int access, final String... modules) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module open. See {@link scala.tools.asm.ModuleVisitor#visitOpen}.
*
* @param packaze the internal name of the opened package (see {@link Type#getInternalName()}).
* @param access the access flag of the opened package, valid values are among {@code
* ACC_SYNTHETIC} and {@code ACC_MANDATED}.
* @param modules the fully qualified names (using dots) of the modules that can use deep
* reflection to the classes of the open package, or {@literal null}.
*/
public void visitOpen(final String packaze, final int access, final String... modules) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module use. See {@link scala.tools.asm.ModuleVisitor#visitUse}.
*
* @param service the internal name of the service (see {@link Type#getInternalName()}).
*/
public void visitUse(final String service) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Module provide. See {@link scala.tools.asm.ModuleVisitor#visitProvide}.
*
* @param service the internal name of the service (see {@link Type#getInternalName()}).
* @param providers the internal names of the implementations of the service (there is at least
* one provider).
*/
public void visitProvide(final String service, final String... providers) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/** Module end. See {@link scala.tools.asm.ModuleVisitor#visitEnd}. */
public void visitModuleEnd() {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
// -----------------------------------------------------------------------------------------------
// Annotations
// -----------------------------------------------------------------------------------------------
/**
* Annotation value. See {@link scala.tools.asm.AnnotationVisitor#visit}.
*
* @param name the value name.
* @param value the actual value, whose type must be {@link Byte}, {@link Boolean}, {@link
* Character}, {@link Short}, {@link Integer} , {@link Long}, {@link Float}, {@link Double},
* {@link String} or {@link Type} of {@link Type#OBJECT} or {@link Type#ARRAY} sort. This
* value can also be an array of byte, boolean, short, char, int, long, float or double values
* (this is equivalent to using {@link #visitArray} and visiting each array element in turn,
* but is more convenient).
*/
// DontCheck(OverloadMethodsDeclarationOrder): overloads are semantically different.
public abstract void visit(String name, Object value);
/**
* Annotation enum value. See {@link scala.tools.asm.AnnotationVisitor#visitEnum}.
*
* @param name the value name.
* @param descriptor the class descriptor of the enumeration class.
* @param value the actual enumeration value.
*/
public abstract void visitEnum(String name, String descriptor, String value);
/**
* Nested annotation value. See {@link scala.tools.asm.AnnotationVisitor#visitAnnotation}.
*
* @param name the value name.
* @param descriptor the class descriptor of the nested annotation class.
* @return the printer.
*/
public abstract Printer visitAnnotation(String name, String descriptor);
/**
* Annotation array value. See {@link scala.tools.asm.AnnotationVisitor#visitArray}.
*
* @param name the value name.
* @return the printer.
*/
public abstract Printer visitArray(String name);
/** Annotation end. See {@link scala.tools.asm.AnnotationVisitor#visitEnd}. */
public abstract void visitAnnotationEnd();
// -----------------------------------------------------------------------------------------------
// Record components
// -----------------------------------------------------------------------------------------------
/**
* Visits an annotation of the record component. See {@link
* scala.tools.asm.RecordComponentVisitor#visitAnnotation}.
*
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
* interested in visiting this annotation.
*/
public Printer visitRecordComponentAnnotation(final String descriptor, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Visits an annotation on a type in the record component signature. See {@link
* scala.tools.asm.RecordComponentVisitor#visitTypeAnnotation}.
*
* @param typeRef a reference to the annotated type. The sort of this type reference must be
* {@link TypeReference#CLASS_TYPE_PARAMETER}, {@link
* TypeReference#CLASS_TYPE_PARAMETER_BOUND} or {@link TypeReference#CLASS_EXTENDS}. See
* {@link TypeReference}.
* @param typePath the path to the annotated type argument, wildcard bound, array element type, or
* static inner type within 'typeRef'. May be {@literal null} if the annotation targets
* 'typeRef' as a whole.
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
* interested in visiting this annotation.
*/
public Printer visitRecordComponentTypeAnnotation(
final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Visits a non standard attribute of the record component. See {@link
* scala.tools.asm.RecordComponentVisitor#visitAttribute}.
*
* @param attribute an attribute.
*/
public void visitRecordComponentAttribute(final Attribute attribute) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Visits the end of the record component. See {@link
* scala.tools.asm.RecordComponentVisitor#visitEnd}. This method, which is the last one to be
* called, is used to inform the visitor that everything have been visited.
*/
public void visitRecordComponentEnd() {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
// -----------------------------------------------------------------------------------------------
// Fields
// -----------------------------------------------------------------------------------------------
/**
* Field annotation. See {@link scala.tools.asm.FieldVisitor#visitAnnotation}.
*
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public abstract Printer visitFieldAnnotation(String descriptor, boolean visible);
/**
* Field type annotation. See {@link scala.tools.asm.FieldVisitor#visitTypeAnnotation}.
*
* @param typeRef a reference to the annotated type. The sort of this type reference must be
* {@link TypeReference#FIELD}. See {@link TypeReference}.
* @param typePath the path to the annotated type argument, wildcard bound, array element type, or
* static inner type within 'typeRef'. May be {@literal null} if the annotation targets
* 'typeRef' as a whole.
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public Printer visitFieldTypeAnnotation(
final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Field attribute. See {@link scala.tools.asm.FieldVisitor#visitAttribute}.
*
* @param attribute an attribute.
*/
public abstract void visitFieldAttribute(Attribute attribute);
/** Field end. See {@link scala.tools.asm.FieldVisitor#visitEnd}. */
public abstract void visitFieldEnd();
// -----------------------------------------------------------------------------------------------
// Methods
// -----------------------------------------------------------------------------------------------
/**
* Method parameter. See {@link scala.tools.asm.MethodVisitor#visitParameter(String, int)}.
*
* @param name parameter name or {@literal null} if none is provided.
* @param access the parameter's access flags, only {@code ACC_FINAL}, {@code ACC_SYNTHETIC}
* or/and {@code ACC_MANDATED} are allowed (see {@link Opcodes}).
*/
public void visitParameter(final String name, final int access) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Method default annotation. See {@link scala.tools.asm.MethodVisitor#visitAnnotationDefault}.
*
* @return the printer.
*/
public abstract Printer visitAnnotationDefault();
/**
* Method annotation. See {@link scala.tools.asm.MethodVisitor#visitAnnotation}.
*
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public abstract Printer visitMethodAnnotation(String descriptor, boolean visible);
/**
* Method type annotation. See {@link scala.tools.asm.MethodVisitor#visitTypeAnnotation}.
*
* @param typeRef a reference to the annotated type. The sort of this type reference must be
* {@link TypeReference#METHOD_TYPE_PARAMETER}, {@link
* TypeReference#METHOD_TYPE_PARAMETER_BOUND}, {@link TypeReference#METHOD_RETURN}, {@link
* TypeReference#METHOD_RECEIVER}, {@link TypeReference#METHOD_FORMAL_PARAMETER} or {@link
* TypeReference#THROWS}. See {@link TypeReference}.
* @param typePath the path to the annotated type argument, wildcard bound, array element type, or
* static inner type within 'typeRef'. May be {@literal null} if the annotation targets
* 'typeRef' as a whole.
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public Printer visitMethodTypeAnnotation(
final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Number of method parameters that can have annotations. See {@link
* scala.tools.asm.MethodVisitor#visitAnnotableParameterCount}.
*
* @param parameterCount the number of method parameters than can have annotations. This number
* must be less or equal than the number of parameter types in the method descriptor. It can
* be strictly less when a method has synthetic parameters and when these parameters are
* ignored when computing parameter indices for the purpose of parameter annotations (see
* https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
* @param visible {@literal true} to define the number of method parameters that can have
* annotations visible at runtime, {@literal false} to define the number of method parameters
* that can have annotations invisible at runtime.
* @return the printer.
*/
public Printer visitAnnotableParameterCount(final int parameterCount, final boolean visible) {
throw new UnsupportedOperationException(UNSUPPORTED_OPERATION);
}
/**
* Method parameter annotation. See {@link
* scala.tools.asm.MethodVisitor#visitParameterAnnotation}.
*
* @param parameter the parameter index. This index must be strictly smaller than the number of
* parameters in the method descriptor, and strictly smaller than the parameter count
* specified in {@link #visitAnnotableParameterCount}. Important note: a parameter index i
* is not required to correspond to the i'th parameter descriptor in the method
* descriptor , in particular in case of synthetic parameters (see
* https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
* @param descriptor the class descriptor of the annotation class.
* @param visible {@literal true} if the annotation is visible at runtime.
* @return the printer.
*/
public abstract Printer visitParameterAnnotation(
int parameter, String descriptor, boolean visible);
/**
* Method attribute. See {@link scala.tools.asm.MethodVisitor#visitAttribute}.
*
* @param attribute an attribute.
*/
public abstract void visitMethodAttribute(Attribute attribute);
/** Method start. See {@link scala.tools.asm.MethodVisitor#visitCode}. */
public abstract void visitCode();
/**
* Method stack frame. See {@link scala.tools.asm.MethodVisitor#visitFrame}.
*
* @param type the type of this stack map frame. Must be {@link Opcodes#F_NEW} for expanded
* frames, or {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND}, {@link Opcodes#F_CHOP}, {@link
* Opcodes#F_SAME} or {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for compressed frames.
* @param numLocal the number of local variables in the visited frame.
* @param local the local variable types in this frame. This array must not be modified. Primitive
* types are represented by {@link Opcodes#TOP}, {@link Opcodes#INTEGER}, {@link
* Opcodes#FLOAT}, {@link Opcodes#LONG}, {@link Opcodes#DOUBLE}, {@link Opcodes#NULL} or
* {@link Opcodes#UNINITIALIZED_THIS} (long and double are represented by a single element).
* Reference types are represented by String objects (representing internal names, see {@link
* Type#getInternalName()}), and uninitialized types by Label objects (this label designates
* the NEW instruction that created this uninitialized value).
* @param numStack the number of operand stack elements in the visited frame.
* @param stack the operand stack types in this frame. This array must not be modified. Its
* content has the same format as the "local" array.
*/
public abstract void visitFrame(
int type, int numLocal, Object[] local, int numStack, Object[] stack);
/**
* Method instruction. See {@link scala.tools.asm.MethodVisitor#visitInsn}
*
* @param opcode the opcode of the instruction to be visited. This opcode is either NOP,
* ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5,
* LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD,
* FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE,
* AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2,
* SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV,
* FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR,
* LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I,
* D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN,
* DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.
*/
public abstract void visitInsn(int opcode);
/**
* Method instruction. See {@link scala.tools.asm.MethodVisitor#visitIntInsn}.
*
* @param opcode the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH
* or NEWARRAY.
* @param operand the operand of the instruction to be visited. getText() {
return text;
}
/**
* Prints the text constructed by this visitor.
*
* @param printWriter the print writer to be used.
*/
public void print(final PrintWriter printWriter) {
printList(printWriter, text);
}
/**
* Prints the given string tree.
*
* @param printWriter the writer to be used to print the tree.
* @param list a string tree, i.e., a string list that can contain other string lists, and so on
* recursively.
*/
static void printList(final PrintWriter printWriter, final List list) {
for (Object o : list) {
if (o instanceof List) {
printList(printWriter, (List) o);
} else {
printWriter.print(o.toString());
}
}
}
/**
* Appends a quoted string to the given string builder.
*
* @param stringBuilder the buffer where the string must be added.
* @param string the string to be added.
*/
public static void appendString(final StringBuilder stringBuilder, final String string) {
stringBuilder.append('\"');
for (int i = 0; i < string.length(); ++i) {
char c = string.charAt(i);
if (c == '\n') {
stringBuilder.append("\\n");
} else if (c == '\r') {
stringBuilder.append("\\r");
} else if (c == '\\') {
stringBuilder.append("\\\\");
} else if (c == '"') {
stringBuilder.append("\\\"");
} else if (c < 0x20 || c > 0x7f) {
stringBuilder.append("\\u");
if (c < 0x10) {
stringBuilder.append("000");
} else if (c < 0x100) {
stringBuilder.append("00");
} else if (c < 0x1000) {
stringBuilder.append('0');
}
stringBuilder.append(Integer.toString(c, 16));
} else {
stringBuilder.append(c);
}
}
stringBuilder.append('\"');
}
/**
* Prints a the given class to the given output.
*
* Command line arguments: [-nodebug] <binary class name or class file name >
*
* @param args the command line arguments.
* @param usage the help message to show when command line arguments are incorrect.
* @param printer the printer to convert the class into text.
* @param output where to print the result.
* @param logger where to log errors.
* @throws IOException if the class cannot be found, or if an IOException occurs.
*/
static void main(
final String[] args,
final String usage,
final Printer printer,
final PrintWriter output,
final PrintWriter logger)
throws IOException {
if (args.length < 1
|| args.length > 2
|| ((args[0].equals("-debug") || args[0].equals("-nodebug")) && args.length != 2)) {
logger.println(usage);
return;
}
TraceClassVisitor traceClassVisitor = new TraceClassVisitor(null, printer, output);
String className;
int parsingOptions;
if (args[0].equals("-nodebug")) {
className = args[1];
parsingOptions = ClassReader.SKIP_DEBUG;
} else {
className = args[0];
parsingOptions = 0;
}
if (className.endsWith(".class")
|| className.indexOf('\\') != -1
|| className.indexOf('/') != -1) {
// Can't fix PMD warning for 1.5 compatibility.
try (InputStream inputStream = new FileInputStream(className)) { // NOPMD(AvoidFileStream)
new ClassReader(inputStream).accept(traceClassVisitor, parsingOptions);
}
} else {
new ClassReader(className).accept(traceClassVisitor, parsingOptions);
}
}
}
