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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2007 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 org.mockito.asm.util;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import org.mockito.asm.Attribute;
/**
* An abstract visitor.
*
* @author Eric Bruneton
*/
public abstract class AbstractVisitor {
/**
* The names of the Java Virtual Machine opcodes.
*/
public static final String[] OPCODES;
/**
* Types for operand parameter of the
* {@link org.mockito.asm.MethodVisitor#visitIntInsn} method when
* opcode is NEWARRAY.
*/
public static final String[] TYPES;
static {
String s = "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,BIPUSH,SIPUSH,LDC,,,"
+ "ILOAD,LLOAD,FLOAD,DLOAD,ALOAD,,,,,,,,,,,,,,,,,,,,,IALOAD,"
+ "LALOAD,FALOAD,DALOAD,AALOAD,BALOAD,CALOAD,SALOAD,ISTORE,"
+ "LSTORE,FSTORE,DSTORE,ASTORE,,,,,,,,,,,,,,,,,,,,,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,IINC,I2L,"
+ "I2F,I2D,L2I,L2F,L2D,F2I,F2L,F2D,D2I,D2L,D2F,I2B,I2C,I2S,LCMP,"
+ "FCMPL,FCMPG,DCMPL,DCMPG,IFEQ,IFNE,IFLT,IFGE,IFGT,IFLE,"
+ "IF_ICMPEQ,IF_ICMPNE,IF_ICMPLT,IF_ICMPGE,IF_ICMPGT,IF_ICMPLE,"
+ "IF_ACMPEQ,IF_ACMPNE,GOTO,JSR,RET,TABLESWITCH,LOOKUPSWITCH,"
+ "IRETURN,LRETURN,FRETURN,DRETURN,ARETURN,RETURN,GETSTATIC,"
+ "PUTSTATIC,GETFIELD,PUTFIELD,INVOKEVIRTUAL,INVOKESPECIAL,"
+ "INVOKESTATIC,INVOKEINTERFACE,,NEW,NEWARRAY,ANEWARRAY,"
+ "ARRAYLENGTH,ATHROW,CHECKCAST,INSTANCEOF,MONITORENTER,"
+ "MONITOREXIT,,MULTIANEWARRAY,IFNULL,IFNONNULL,";
OPCODES = new String[200];
int i = 0;
int j = 0;
int l;
while ((l = s.indexOf(',', j)) > 0) {
OPCODES[i++] = j + 1 == l ? null : s.substring(j, l);
j = l + 1;
}
s = "T_BOOLEAN,T_CHAR,T_FLOAT,T_DOUBLE,T_BYTE,T_SHORT,T_INT,T_LONG,";
TYPES = new String[12];
j = 0;
i = 4;
while ((l = s.indexOf(',', j)) > 0) {
TYPES[i++] = s.substring(j, l);
j = l + 1;
}
}
/**
* 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;
/**
* A buffer that can be used to create strings.
*/
protected final StringBuffer buf;
/**
* Constructs a new {@link AbstractVisitor}.
*/
protected AbstractVisitor() {
this.text = new ArrayList();
this.buf = new StringBuffer();
}
/**
* Returns the text constructed by this visitor.
*
* @return the text constructed by this visitor.
*/
public List getText() {
return text;
}
/**
* Prints the text constructed by this visitor.
*
* @param pw the print writer to be used.
*/
public void print(final PrintWriter pw) {
printList(pw, text);
}
/**
* Appends a quoted string to a given buffer.
*
* @param buf the buffer where the string must be added.
* @param s the string to be added.
*/
public static void appendString(final StringBuffer buf, final String s) {
buf.append('\"');
for (int i = 0; i < s.length(); ++i) {
char c = s.charAt(i);
if (c == '\n') {
buf.append("\\n");
} else if (c == '\r') {
buf.append("\\r");
} else if (c == '\\') {
buf.append("\\\\");
} else if (c == '"') {
buf.append("\\\"");
} else if (c < 0x20 || c > 0x7f) {
buf.append("\\u");
if (c < 0x10) {
buf.append("000");
} else if (c < 0x100) {
buf.append("00");
} else if (c < 0x1000) {
buf.append('0');
}
buf.append(Integer.toString(c, 16));
} else {
buf.append(c);
}
}
buf.append('\"');
}
/**
* Prints the given string tree.
*
* @param pw the writer to be used to print the tree.
* @param l a string tree, i.e., a string list that can contain other string
* lists, and so on recursively.
*/
static void printList(final PrintWriter pw, final List l) {
for (int i = 0; i < l.size(); ++i) {
Object o = l.get(i);
if (o instanceof List) {
printList(pw, (List) o);
} else {
pw.print(o.toString());
}
}
}
/**
* Returns the default {@link ASMifiable} prototypes.
*
* @return the default {@link ASMifiable} prototypes.
*/
public static Attribute[] getDefaultAttributes() {
return new Attribute[0];
}
}
