text
stringlengths 9
39.2M
| dir
stringlengths 25
226
| lang
stringclasses 163
values | created_date
timestamp[s] | updated_date
timestamp[s] | repo_name
stringclasses 751
values | repo_full_name
stringclasses 752
values | star
int64 1.01k
183k
| len_tokens
int64 1
18.5M
|
|---|---|---|---|---|---|---|---|---|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class dcmpl extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x97;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
double v2 = operandStack.popDouble();
double v1 = operandStack.popDouble();
if (v1 > v2)
operandStack.pushInt(1);
else if (v1 == v2)
operandStack.pushInt(0);
else if (v1 < v2)
operandStack.pushInt(-1);
else
operandStack.pushInt(-1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/dcmpl.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 193
|
```java
package com.github.jvmgo.instructions.comparisons;
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 12
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class ifle extends BranchInstruction {
@Override
public int getOpCode() {
return 0x9e;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int i = operandStack.popInt();
if (i >= 0) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/ifle.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 131
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class if_icmplt extends BranchInstruction {
@Override
public int getOpCode() {
return 0xa1;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int v2 = operandStack.popInt();
int v1 = operandStack.popInt();
if (v2 > v1) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/if_icmplt.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 144
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class if_icmpge extends BranchInstruction {
@Override
public int getOpCode() {
return 0xa2;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int v2 = operandStack.popInt();
int v1 = operandStack.popInt();
if (v2 <= v1) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/if_icmpge.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 144
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class if_icmpeq extends BranchInstruction {
@Override
public int getOpCode() {
return 0x9f;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int v2 = operandStack.popInt();
int v1 = operandStack.popInt();
if (v2 == v1) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/if_icmpeq.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 145
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class ifne extends BranchInstruction {
@Override
public int getOpCode() {
return 0x9a;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int i = operandStack.popInt();
if (i != 0) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/ifne.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 131
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class fcmpg extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x96;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
float v2 = operandStack.popFloat();
float v1 = operandStack.popFloat();
if (v1 > v2)
operandStack.pushInt(1);
else if (v1 == v2)
operandStack.pushInt(0);
else if (v1 < v2)
operandStack.pushInt(-1);
else
operandStack.pushInt(1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/fcmpg.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 193
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class if_icmpgt extends BranchInstruction {
@Override
public int getOpCode() {
return 0xa3;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int v2 = operandStack.popInt();
int v1 = operandStack.popInt();
if (v2 < v1) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/if_icmpgt.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 144
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class ifeq extends BranchInstruction {
@Override
public int getOpCode() {
return 0x99;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int i = operandStack.popInt();
if (i == 0) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/ifeq.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 130
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class ifgt extends BranchInstruction {
@Override
public int getOpCode() {
return 0x9d;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int i = operandStack.popInt();
if (i < 0) {
branch(frame,offset);
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/ifgt.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 131
|
```java
package com.github.jvmgo.instructions.comparisons;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class lcmp extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x94;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
long v2 = operandStack.popLong();
long v1 = operandStack.popLong();
if (v1 < v2)
operandStack.pushInt(1);
else if (v1 == v2)
operandStack.pushInt(0);
else
operandStack.pushInt(-1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/comparisons/lcmp.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 174
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.BytecodeReader;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class sipush extends NoOperandsInstruction {
private int val;
@Override
public int getOpCode() {
return 0x11;
}
@Override
public String getReName() {
return "sipush";
}
@Override
public void fetchOperands(BytecodeReader reader) {
val = reader.read16();
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(val);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/sipush.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 154
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_3 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x06;
}
@Override
public String getReName() {
return "iconst_3";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(3);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_3.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class lconst_1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0a;
}
@Override
public String getReName() {
return "lconst_1";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushLong(1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/lconst_1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 118
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class fconst_0 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0b;
}
@Override
public String getReName() {
return null;
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushFloat(0.0f);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/fconst_0.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x05;
}
@Override
public String getReName() {
return "iconst_2";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(2);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_5 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x08;
}
@Override
public String getReName() {
return "iconst_5";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(5);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_5.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.BytecodeReader;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class bipush extends NoOperandsInstruction {
private int val;
@Override
public int getOpCode() {
return 0x10;
}
@Override
public String getReName() {
return "bipush";
}
@Override
public void fetchOperands(BytecodeReader reader) {
val = reader.read8();
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(val);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/bipush.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 155
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_4 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x07;
}
@Override
public String getReName() {
return "iconst_4";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(4);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_4.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x04;
}
@Override
public String getReName() {
return "iconst_1";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class ldc extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x12;
}
@Override
public String getReName() {
return "ldc";
}
@Override
public void execute(Frame frame) {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/ldc.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 99
|
```java
package com.github.jvmgo.instructions.constants;
/*
*
*
*
*
*
*
*/
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 19
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class lconst_0 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x09;
}
@Override
public String getReName() {
return "lconst_0";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushLong(0L);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/lconst_0.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 118
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class fconst_2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0d;
}
@Override
public String getReName() {
return "fconst_2";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushFloat(2.0f);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/fconst_2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_m1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x02;
}
@Override
public String getReName() {
return "iconst_m1";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(-1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_m1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class aconst_null extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x01;
}
@Override
public String getReName() {
return "aconst_null";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushRef(null);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/aconst_null.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 114
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class ldc_w extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x13;
}
@Override
public String getReName() {
return "ldc_w";
}
@Override
public void execute(Frame frame) {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/ldc_w.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 101
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class nop extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x00;
}
@Override
public String getReName() {
return "nop";
}
@Override
public void execute(Frame frame) {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/nop.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 98
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class dconst_1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0f;
}
@Override
public String getReName() {
return "dconst_1";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushDouble(1.0d);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/dconst_1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class fconst_1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0c;
}
@Override
public String getReName() {
return "fconst_1";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushFloat(1.0f);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/fconst_1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class ldc2_w extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x14;
}
@Override
public String getReName() {
return "ldc2_w";
}
@Override
public void execute(Frame frame) {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/ldc2_w.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 103
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class iconst_0 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x03;
}
@Override
public String getReName() {
return "iconst_0";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushInt(0);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/iconst_0.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 117
|
```java
package com.github.jvmgo.instructions.constants;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class dconst_0 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x0e;
}
@Override
public String getReName() {
return "dconst_0";
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().pushDouble(0.0d);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/constants/dconst_0.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class swap extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5f;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot2);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/swap.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 154
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup_x1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5a;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup_x1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 164
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup2_x1 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5d;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
Slot slot3 = operandStack.popSlot();
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot3);
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup2_x1.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 191
|
```java
package com.github.jvmgo.instructions.stack;
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 10
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup2_x2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5e;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
Slot slot3 = operandStack.popSlot();
Slot slot4 = operandStack.popSlot();
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot4);
operandStack.pushSlot(slot3);
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup2_x2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 209
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class pop extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x57;
}
@Override
public void execute(Frame frame) throws Exception {
frame.getOperandStack().popSlot();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/pop.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 90
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x59;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot = operandStack.popSlot();
operandStack.pushSlot(slot);
operandStack.pushSlot(slot);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 140
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class pop2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x58;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.popSlot();
operandStack.popSlot();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/pop2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 118
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5c;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 171
|
```java
package com.github.jvmgo.instructions.stack;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Slot;
public class dup_x2 extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x5b;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Slot slot1 = operandStack.popSlot();
Slot slot2 = operandStack.popSlot();
Slot slot3 = operandStack.popSlot();
operandStack.pushSlot(slot1);
operandStack.pushSlot(slot3);
operandStack.pushSlot(slot2);
operandStack.pushSlot(slot1);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/stack/dup_x2.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 182
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2l extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x85;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushLong(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2l.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class l2f extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x89;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushFloat((float)operandStack.popLong());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/l2f.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2s extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x93;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushInt(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2s.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2f extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x86;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushFloat(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2f.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2b extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x91;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushInt(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2b.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2d extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x87;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushDouble(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2d.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class f2l extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8c;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushLong((long) operandStack.popFloat());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/f2l.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 122
|
```java
package com.github.jvmgo.instructions.conversions;
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 11
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class f2i extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8b;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushInt((int) operandStack.popFloat());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/f2i.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 122
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class l2i extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x88;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushInt((int)operandStack.popLong());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/l2i.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class l2d extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8a;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushDouble(operandStack.popLong());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/l2d.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 120
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class d2i extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8e;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushFloat((int) operandStack.popDouble());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/d2i.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 122
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class i2c extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x92;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushInt(operandStack.popInt());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/i2c.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 119
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class f2d extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8d;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushDouble(operandStack.popFloat());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/f2d.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 120
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class d2f extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x90;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushFloat((float) operandStack.popDouble());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/d2f.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 121
|
```java
package com.github.jvmgo.instructions.conversions;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
public class d2l extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0x8f;
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
operandStack.pushLong((long) operandStack.popDouble());
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/conversions/d2l.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 122
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class ireturn extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xac;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/ireturn.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 81
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class freturn extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xae;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/freturn.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 81
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.instructions.base.BytecodeReader;
import lombok.Getter;
import lombok.Setter;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Thread;
@Getter
@Setter
public class tableswitch extends BranchInstruction {
private int defaultOffset;
private int low;
private int high;
private int[] jumpOffsets;
@Override
public int getOpCode() {
return 0xaa;
}
@Override
public void fetchOperands(BytecodeReader reader) {
reader.skipPadding();
low = reader.read32();
high = reader.read32();
jumpOffsets = reader.readInt32s(high - low + 1);
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
int index = operandStack.popInt();
if (index >= low && index <= high) {
offset = jumpOffsets[index - low];
} else {
offset = defaultOffset;
}
Thread thread = frame.getThread();
thread.setPc(offset);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/tableswitch.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 268
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class ret extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xa9;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/ret.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 81
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class dreturn extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xaf;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/dreturn.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 81
|
```java
package com.github.jvmgo.instructions.control;
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 10
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class areturn extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xb0;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/areturn.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 82
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.instructions.base.BytecodeReader;
import lombok.Getter;
import lombok.Setter;
import com.github.jvmgo.rtda.Frame;
import com.github.jvmgo.rtda.OperandStack;
import com.github.jvmgo.rtda.Thread;
@Setter
@Getter
public class lookupswitch extends BranchInstruction {
private int defaultOffset;
private int npairs;
private int[] matchOffsets;
@Override
public int getOpCode() {
return 0xab;
}
@Override
public void fetchOperands(BytecodeReader reader) {
reader.skipPadding();
defaultOffset = reader.read32();
npairs = reader.read32();
matchOffsets = reader.readInt32s(npairs * 2);
}
@Override
public void execute(Frame frame) throws Exception {
OperandStack operandStack = frame.getOperandStack();
Thread thread = frame.getThread();
int key = operandStack.popInt();
for (int i = 0; i < npairs * 2; i += 2) {
if (matchOffsets[i] == key) {
offset = matchOffsets[i + 1];
thread.setPc(offset);
return;
}
}
thread.setPc(defaultOffset);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/lookupswitch.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 291
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class return_ extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xb1;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/return_.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 82
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.BranchInstruction;
import com.github.jvmgo.instructions.base.BytecodeReader;
import com.github.jvmgo.rtda.Frame;
public class goto_ extends BranchInstruction {
@Override
public int getOpCode() {
return 0xa7;
}
@Override
public void fetchOperands(BytecodeReader reader) throws Exception {
this.offset = reader.read16();
}
@Override
public void execute(Frame frame) throws Exception {
branch(frame, offset);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/goto_.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 124
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class lreturn extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xad;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/lreturn.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 81
|
```java
package com.github.jvmgo.rtda;
public class Objcet {
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Objcet.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 18
|
```java
package com.github.jvmgo.instructions.control;
import com.github.jvmgo.instructions.base.NoOperandsInstruction;
import com.github.jvmgo.rtda.Frame;
public class jsr extends NoOperandsInstruction {
@Override
public int getOpCode() {
return 0xa8;
}
@Override
public void execute(Frame frame) throws Exception {
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/instructions/control/jsr.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 82
|
```java
package com.github.jvmgo.rtda;
/**
*
*
* run time data area
*
*
**/
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/package-info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 24
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
@Setter
@Getter
@ToString
public class Thread {
private int pc;
private Stack stack;
public Thread(int maxStack) {
this.stack = new Stack(maxStack);
}
public void pushFrame(Frame frame) {
this.stack.push(frame);
}
public Frame popFrame() {
return this.stack.pop();
}
public Frame currentFrame() {
return this.stack.current();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Thread.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 111
|
```java
package com.github.jvmgo.rtda;
public class Util {
public static Slot setInt(int val) {
boolean flag = true;
String s = addZero(Integer.toBinaryString(val), 32);
if (val < 0) {
flag = false;
s = addZero(translate(Integer.toBinaryString(val)), 32);
}
Slot slot = new Slot();
slot.setFlag(flag);
slot.setNum(s);
return slot;
}
public static int getInt(Slot slot) {
if (slot.isFlag()) {
return slot.getNumInt();
} else {
return slot.getNumInt() * -1 - 1;
}
}
public static Slot[] setLong(long val) {
Slot[] slots = new Slot[2];
boolean flag = true;
String s = Util.addZero(Long.toBinaryString(val), 64);
if (val < 0) {
flag = false;
s = Util.addZero(Util.translate(Long.toBinaryString(val)), 64);
}
String high = s.substring(0, 32);
String low = s.substring(32);
Slot slot = new Slot();
slot.setNum(high);
slot.setFlag(flag);
slots[0] = slot;
Slot slot2 = new Slot();
slot2.setNum(low);
slot.setFlag(flag);
slots[1] = slot2;
return slots;
}
public static long getLong(Slot[] slots) {
Slot high = slots[0];
Slot low = slots[1];
if (high.isFlag()) {
return Long.parseLong(high.getNum() + low.getNum(), 2);
} else {
return Long.parseLong(high.getNum() + low.getNum(), 2) * -1 - 1;
}
}
public static String addZero(String s, int length) {
if (s.length() >= length) {
return s;
}
StringBuilder builder = new StringBuilder();
for (int i = 0; i < length - s.length(); i++) {
builder.append("0");
}
return builder.append(s).toString();
}
public static String translate(String s) {
StringBuilder builder = new StringBuilder();
for (char c : s.toCharArray()) {
if (c == '0') {
builder.append("1");
} else {
builder.append("0");
}
}
return builder.toString();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Util.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 523
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import java.lang.ref.Reference;
import java.util.Stack;
@Getter
@Setter
@ToString
public class OperandStack {
private Stack<Slot> stacks;
private int maxStack;
public OperandStack(int maxStack) {
this.maxStack = maxStack;
if (maxStack > 0) {
stacks = new Stack<>();
} else
System.exit(-1);
}
public void pushSlot(Slot slot) throws Exception {
if (stacks.size() >= maxStack) {
throw new Exception("size > maxStack");
}
stacks.push(slot);
}
public Slot popSlot() throws Exception {
if (stacks.size() <= 0) {
throw new Exception("size <0 ");
}
return stacks.pop();
}
public void pushInt(int val) throws Exception {
pushSlot(Util.setInt(val));
}
public int popInt() {
return Util.getInt(stacks.pop());
}
public void pushFloat(float val) throws Exception {
int a = Float.floatToIntBits(val);
pushInt(a);
}
public float popFloat() {
return Float.intBitsToFloat(popInt());
}
public void pushLong(long val) throws Exception {
Slot[] slots = Util.setLong(val);
pushSlot(slots[0]);
pushSlot(slots[1]);
}
public long popLong() throws Exception {
Slot low = popSlot();
Slot high = popSlot();
return Util.getLong(new Slot[]{high, low});
}
public void pushDouble(double val) throws Exception {
pushLong(Double.doubleToLongBits(val));
}
public double popDouble() throws Exception {
return Double.longBitsToDouble(popLong());
}
public void pushRef(Reference ref) throws Exception {
Slot slot = new Slot();
slot.setRef(ref);
pushSlot(slot);
}
public Reference popRef() throws Exception {
Reference reference = popSlot().getRef();
return reference;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/OperandStack.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 448
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class Stack {
private int maxSize;
private int size;
private java.util.Stack<Frame> stacks;
public Stack(int maxSize) {
this.maxSize = maxSize;
stacks = new java.util.Stack<>();
}
public void push(Frame frame) {
if (this.size >= maxSize) {
System.out.println("java.lang.StackOverflowError");
System.exit(1);
}
stacks.push(frame);
size++;
}
public Frame pop() {
Frame pop = stacks.pop();
if (pop == null) {
System.out.println("java stack is empty");
System.exit(2);
}
size--;
return pop;
}
public Frame current() {
Frame peek = stacks.peek();
if (peek == null) {
System.out.println("java stack is empty");
System.exit(2);
}
return peek;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Stack.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 211
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
import java.lang.ref.Reference;
public class Slot {
private String num;
/**
* >0 true <0 false
*/
@Getter
@Setter
private boolean flag;
@Getter
@Setter
private Reference ref;
@Override
public String toString() {
return getNumInt() + "";
}
public int getNumInt() {
return Integer.parseInt(num, 2);
}
public String getNum() {
return num;
}
public void setNum(int num) {
this.num = Integer.toBinaryString(num);
}
public void setNum(String num) {
this.num = num;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Slot.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 166
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
@Setter
@Getter
@ToString
public class Frame {
private Frame lower;
private LocalVars localVars;
private OperandStack operandStack;
private Thread thread;
private int nextPc;
public Frame(Thread thread, int maxLocals, int maxStack) {
this.thread = thread;
this.localVars = new LocalVars(maxLocals);
this.operandStack = new OperandStack(maxStack);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/Frame.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 114
|
```java
package com.github.jvmgo.classpath;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.stream.Collectors;
class WildcardEntry extends CompositeEntry {
WildcardEntry(String path) {
super(toPathList(path));
}
private static String toPathList(String wildcardPath) {
String baseDir = wildcardPath.replace("*", ""); // remove *
try {
return Files.walk(Paths.get(baseDir))
.filter(Files::isRegularFile)
.map(Path::toString)
.filter(p -> p.endsWith(".jar") || p.endsWith(".JAR"))
.collect(Collectors.joining(File.pathSeparator));
} catch (IOException e) {
//e.printStackTrace(System.err);
return "";
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/WildcardEntry.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 175
|
```java
package com.github.jvmgo.rtda;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import java.lang.ref.Reference;
/**
*/
@Setter
@Getter
@ToString
public class LocalVars {
private Slot[] localVars;
public LocalVars(int maxLocals) {
if (maxLocals > 0)
localVars = new Slot[maxLocals];
else
System.exit(-1);
}
public void setInt(int index, int val) {
localVars[index] = Util.setInt(val);
}
public int getInt(int index) {
Slot slot = localVars[index];
return Util.getInt(slot);
}
public void setFloat(int index, float val) {
int a = Float.floatToIntBits(val);
setInt(index, a);
}
public float getFloat(int index) {
int a = getInt(index);
return Float.intBitsToFloat(a);
}
public void setLong(int index, long val) {
Slot[] slots = Util.setLong(val);
localVars[index] = slots[0];
localVars[index + 1] = slots[1];
}
public long getLong(int index) {
Slot high = localVars[index];
Slot low = localVars[index + 1];
return Util.getLong(new Slot[]{high, low});
}
public void setDouble(int index, double val) {
long v = Double.doubleToLongBits(val);
setLong(index, v);
}
public double getDouble(int index) {
long v = getLong(index);
return Double.longBitsToDouble(v);
}
public void setRef(int index, Reference ref) {
Slot slot = new Slot();
slot.setRef(ref);
localVars[index] = slot;
}
public Reference getRef(int index) {
return localVars[index].getRef();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/rtda/LocalVars.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 401
|
```java
package com.github.jvmgo.classpath;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
class DirEntry implements Entry {
private Path absPath;
DirEntry(String path) {
absPath = Paths.get(path).toAbsolutePath();
}
@Override
public byte[] readClass(String className) throws IOException {
return Files.readAllBytes(absPath.resolve(className));
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/DirEntry.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 95
|
```java
package com.github.jvmgo.classpath;
import java.io.File;
public interface Entry {
// className: fully/qualified/ClassName.class
byte[] readClass(String className) throws Exception;
// factory method
static Entry create(String path) {
if (path.contains(File.pathSeparator)) {
return new CompositeEntry(path);
}
if (path.endsWith("*")) {
return new WildcardEntry(path);
}
if (path.endsWith(".jar") || path.endsWith(".JAR") ||
path.endsWith(".zip") || path.endsWith(".ZIP")) {
return new ZipEntry(path);
}
return new DirEntry(path);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/Entry.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 139
|
```java
package com.github.jvmgo.classpath;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.stream.Collectors;
public class Classpath {
private Entry bootClasspath;
private Entry extClasspath;
private Entry userClasspath;
public Classpath(String jreOption, String cpOption) {
parseBootAndExtClasspath(jreOption);
parseUserClasspath(cpOption);
}
private void parseBootAndExtClasspath(String jreOption) {
String jreDir = getJreDir(jreOption);
// jre/lib/*
String jreLibPath = Paths.get(jreDir, "lib") + File.separator + "*";
bootClasspath = new WildcardEntry(jreLibPath);
// jre/lib/ext/*
String jreExtPath = Paths.get(jreDir, "lib", "ext") + File.separator + "*";
extClasspath = new WildcardEntry(jreExtPath);
}
private static String getJreDir(String jreOption) {
if (jreOption != null && Files.exists(Paths.get(jreOption))) {
return jreOption;
}
if (Files.exists(Paths.get("./jre"))) {
return "./jre";
}
String jh = System.getenv("JAVA_HOME");
if (jh != null) {
return Paths.get(jh, "jre").toString();
}
throw new RuntimeException("Can not find JRE folder!");
}
private void parseUserClasspath(String cpOption) {
if (cpOption == null) {
cpOption = ".";
}
userClasspath = Entry.create(cpOption);
}
// className: fully/qualified/ClassName
public byte[] readClass(String className) throws Exception {
className = className + ".class";
try {
return bootClasspath.readClass(className);
} catch (Exception ignored) {
}
try {
return bootClasspath.readClass(className);
} catch (Exception ignored) {
}
return userClasspath.readClass(className);
}
public static String join(String... paths) {
return Arrays.stream(paths)
.collect(Collectors.joining(File.pathSeparator));
}
public static String[] split(String pathList) {
return pathList.split(File.pathSeparator);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/Classpath.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 504
|
```java
package com.github.jvmgo.classpath;
import java.nio.file.*;
class ZipEntry implements Entry {
private Path absPath;
ZipEntry(String path) {
absPath = Paths.get(path).toAbsolutePath();
}
@Override
public byte[] readClass(String className) throws Exception {
try (FileSystem zipFs = FileSystems.newFileSystem(absPath, null)) {
return Files.readAllBytes(zipFs.getPath(className));
}
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/ZipEntry.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 96
|
```java
package com.github.jvmgo.classpath;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
class CompositeEntry implements Entry {
private final List<Entry> entries = new ArrayList<>();
CompositeEntry(String pathList) {
for (String path : pathList.split(File.pathSeparator)) {
entries.add(Entry.create(path));
}
}
@Override
public byte[] readClass(String className) throws Exception {
for (Entry entry : entries) {
try {
return entry.readClass(className);
} catch (Exception ignored) {
}
}
throw new Exception("class not found: " + className);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/classpath/CompositeEntry.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 139
|
```java
package com.github.jvmgo.clazz;
import com.github.jvmgo.clazz.attribute.Attribute_info;
import com.github.jvmgo.clazz.constant.CONSTANT;
import com.github.jvmgo.clazz.constant.CONSTANT_Utf8_info;
import com.github.jvmgo.clazz.field.Field_info;
import com.github.jvmgo.clazz.method.Method_info;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class ClassFile {
private String magic;
private int minorVersion;
private int majorVersion;
private int constantPoolCount;
private CONSTANT[] constantPool;
private String accessFlags;
private String thisClass;
private String superClass;
private int interfacesCount;
private CONSTANT_Utf8_info[] interfaces;
private int fieldsCount;
private Field_info[] fields;
private int methodsCount;
private Method_info[] methods;
private int attributesCount;
private Attribute_info[] attributes;
public Method_info getMainMethod() {
for (Method_info m : methods) {
if ("main".equals(m.getName()) && "([Ljava/lang/String;)V".equals(m.getDescriptor())) {
return m;
}
}
return null;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/ClassFile.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 254
|
```java
package com.github.jvmgo.clazz.field;
import com.github.jvmgo.clazz.attribute.Attribute_info;
import com.github.jvmgo.clazz.attribute.Code;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class Field_info {
//U2
private String access_flag;
//U2
private String name;
//U2
private String descriptor;
private int attributes_count;
private Attribute_info[] attributes;
public String accessFlagsToString(String s) {
StringBuilder builder = new StringBuilder();
switch (s.charAt(3)) {
case '0':
break;
case '1':
builder.append("ACC_PUBLIC").append(" ");
break;
case '2':
builder.append("ACC_PRIVATE").append(" ");
break;
case '4':
builder.append("ACC_PROTECTED").append(" ");
break;
case '8':
builder.append("ACC_STATIC").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(2)) {
case '0':
break;
case '1':
builder.append("ACC_FINAL").append(" ");
break;
case '4':
builder.append("ACC_VOLATILE").append(" ");
break;
case '8':
builder.append("ACC_TRANSIENT").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(1)) {
case '0':
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(0)) {
case '0':
break;
case '1':
builder.append("ACC_SYNTHETIC");
break;
case '4':
builder.append("ACC_ENUM");
break;
default:
throw new RuntimeException("can not parse access flag");
}
return builder.toString();
}
public Code getCodeAttribute() {
for (Attribute_info attribute_info : attributes) {
if (attribute_info instanceof Code) {
return (Code) attribute_info;
}
}
return null;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/field/Field_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 467
|
```java
package com.github.jvmgo.clazz;
import com.github.jvmgo.clazz.attribute.Attribute_info;
import com.github.jvmgo.clazz.constant.CONSTANT;
import com.github.jvmgo.clazz.constant.CONSTANT_Class_info;
import com.github.jvmgo.clazz.constant.CONSTANT_Utf8_info;
import com.github.jvmgo.clazz.field.Field_info;
import com.github.jvmgo.clazz.method.Method_info;
import java.util.Arrays;
public class ClassReader {
private int pos;
private byte[] bytes;
public ClassReader(byte[] bytes) {
this.bytes = bytes;
pos = 0;
}
public ClassFile parseClassFile() {
ClassFile classFile = new ClassFile();
parseMagic(classFile);
parseMinOrVersion(classFile);
parseMajorVersion(classFile);
parseConstantPoolCount(classFile);
parseConstantPool(classFile);
parseAccessFlags(classFile);
parseThisClass(classFile);
parseSuperClass(classFile);
parseInterfacesCount(classFile);
parseInterfaces(classFile);
parseFieldsCount(classFile);
parseFields(classFile);
parseMethodCount(classFile);
parseMethods(classFile);
parseAttributesCount(classFile);
parseAttributes(classFile);
return classFile;
}
private void parseAttributes(ClassFile classFile) {
Attribute_info[] attribute_infos = new Attribute_info[classFile.getAttributesCount()];
for (int i = 0; i < attribute_infos.length; i++) {
CONSTANT_Utf8_info attributeName = (CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
Attribute_info attribute_info = Attribute_info.getInstance(attributeName.parseString());
attribute_info.setAttribute_name(attributeName.parseString());
int u4 = readU4Int();
attribute_info.setAttribute_length(u4);
attribute_info.setInfo(readBytes(u4));
attribute_infos[i] = attribute_info.parseAttribute(classFile);
}
classFile.setAttributes(attribute_infos);
}
private void parseAttributesCount(ClassFile classFile) {
classFile.setAttributesCount(readU2());
}
private void parseMethods(ClassFile classFile) {
Method_info[] method_infos = new Method_info[classFile.getMethodsCount()];
for (int i = 0; i < method_infos.length; i++) {
Method_info method_info = new Method_info();
String s = toHexString(readU2Byte());
if (s.length() < 4) {
for (; 0 < 4 - s.length(); ) {
s = "0" + s;
}
}
method_info.setAccess_flag(method_info.accessFlagsToString(s));
CONSTANT_Utf8_info constant_utf8_info =
(CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
method_info.setName(constant_utf8_info.parseString());
CONSTANT_Utf8_info constant_utf8_info2 =
(CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
method_info.setDescriptor(constant_utf8_info2.parseString());
int attribute_count = readU2();
method_info.setAttributes_count(attribute_count);
Attribute_info[] attribute_infos = new Attribute_info[attribute_count];
for (int j = 0; j < attribute_count; j++) {
CONSTANT_Utf8_info attributeName = (CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
Attribute_info attribute_info = Attribute_info.getInstance(attributeName.parseString());
attribute_info.setAttribute_name(attributeName.parseString());
int u4 = readU4Int();
attribute_info.setAttribute_length(u4);
attribute_info.setInfo(readBytes(u4));
attribute_infos[j] = attribute_info.parseAttribute(classFile);
}
method_info.setAttributes(attribute_infos);
method_infos[i] = method_info;
}
classFile.setMethods(method_infos);
}
private void parseMethodCount(ClassFile classFile) {
classFile.setMethodsCount(readU2());
}
private void parseFields(ClassFile classFile) {
Field_info[] field_infos = new Field_info[classFile.getFieldsCount()];
for (int i = 0; i < field_infos.length; i++) {
Field_info field_info = new Field_info();
String s = toHexString(readU2Byte());
if (s.length() < 4) {
for (; 0 < 4 - s.length(); ) {
s = "0" + s;
}
}
field_info.setAccess_flag(field_info.accessFlagsToString(s));
CONSTANT_Utf8_info constant_utf8_info =
(CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
field_info.setName(constant_utf8_info.parseString());
CONSTANT_Utf8_info constant_utf8_info2 =
(CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
field_info.setDescriptor(constant_utf8_info2.parseString());
int attribute_count = readU2();
field_info.setAttributes_count(attribute_count);
Attribute_info[] attribute_infos = new Attribute_info[attribute_count];
for (int j = 0; j < attribute_count; j++) {
CONSTANT_Utf8_info attributeName = (CONSTANT_Utf8_info) classFile.getConstantPool()[readU2()];
Attribute_info attribute_info = Attribute_info.getInstance(attributeName.parseString());
attribute_info.setAttribute_name(attributeName.parseString());
int u4 = readU4Int();
attribute_info.setAttribute_length(u4);
attribute_info.setInfo(readBytes(u4));
attribute_infos[j] = attribute_info.parseAttribute(classFile);
}
field_info.setAttributes(attribute_infos);
field_infos[i] = field_info;
}
classFile.setFields(field_infos);
}
private void parseFieldsCount(ClassFile classFile) {
classFile.setFieldsCount(readU2());
}
private void parseInterfaces(ClassFile classFile) {
CONSTANT_Utf8_info[] infos = new CONSTANT_Utf8_info[classFile.getInterfacesCount()];
for (int i = 0; i < classFile.getInterfacesCount(); i++) {
CONSTANT_Class_info constant_class_info =
(CONSTANT_Class_info) classFile.getConstantPool()[readU2()];
CONSTANT_Utf8_info constant_utf8_info =
(CONSTANT_Utf8_info) classFile.getConstantPool()[constant_class_info.getName_index()];
infos[i] = constant_utf8_info;
}
classFile.setInterfaces(infos);
}
private void parseInterfacesCount(ClassFile classFile) {
classFile.setInterfacesCount(readU2());
}
private void parseThisClass(ClassFile classFile) {
CONSTANT_Class_info constant_class_info =
(CONSTANT_Class_info) classFile.getConstantPool()[readU2()];
CONSTANT_Utf8_info constant_utf8_info =
(CONSTANT_Utf8_info) classFile.getConstantPool()[constant_class_info.getName_index()];
classFile.setThisClass(constant_utf8_info.parseString());
}
private void parseSuperClass(ClassFile classFile) {
int index = readU2();
if (index == 0) {
classFile.setSuperClass("Object");
return;
}
CONSTANT_Class_info constant_class_info =
(CONSTANT_Class_info) classFile.getConstantPool()[index];
CONSTANT_Utf8_info constant_utf8_info =
(CONSTANT_Utf8_info) classFile.getConstantPool()[constant_class_info.getName_index()];
classFile.setSuperClass(constant_utf8_info.parseString());
}
private void parseAccessFlags(ClassFile classFile) {
String s = toHexString(readU2Byte());
if (s.length() < 4) {
for (; 0 < 4 - s.length(); ) {
s = "0" + s;
}
}
classFile.setAccessFlags(accessFlagsToString(s));
}
private String accessFlagsToString(String s) {
StringBuilder builder = new StringBuilder();
switch (s.charAt(3)) {
case '0':
break;
case '1':
builder.append("ACC_PUBLIC").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(2)) {
case '0':
break;
case '1':
builder.append("ACC_FINAL").append(" ");
break;
case '2':
builder.append("ACC_SUPER").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(1)) {
case '0':
break;
case '2':
builder.append("ACC_INTERFACE").append(" ");
break;
case '4':
builder.append("ACC_ABSTRACT").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(0)) {
case '0':
break;
case '1':
builder.append("ACC_SYNTHETIC");
break;
case '2':
builder.append("ACC_ANNOTATION");
break;
case '4':
builder.append("ACC_ENUM");
break;
default:
throw new RuntimeException("can not parse access flag");
}
return builder.toString();
}
private void parseConstantPool(ClassFile classFile) {
int count = classFile.getConstantPoolCount();
CONSTANT[] cpInfos = new CONSTANT[count];
cpInfos[0] = null;
for (int i = 1; i < count; i++) {
int tag = readU1();
cpInfos[i] = CONSTANT.parseConstant(tag, this);
}
classFile.setConstantPool(cpInfos);
}
private void parseConstantPoolCount(ClassFile classFile) {
classFile.setConstantPoolCount(readU2());
}
private void parseMajorVersion(ClassFile classFile) {
classFile.setMajorVersion(readU2());
}
private void parseMinOrVersion(ClassFile classFile) {
classFile.setMinorVersion(readU2());
}
private void parseMagic(ClassFile classFile) {
classFile.setMagic(readU4());
}
public int readU1() {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + 1);
pos += 1;
return bytesToInt(bytes);
}
public byte[] readBytes(int length) {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + length);
pos += length;
return bytes;
}
public byte readU1Byte() {
byte b = this.bytes[pos];
pos += 1;
return b;
}
public int readU2() {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + 2);
pos += 2;
return bytesToInt(bytes);
}
public byte[] readU2Byte() {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + 2);
pos += 2;
return bytes;
}
public String readU4() {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + 4);
pos += 4;
return bytesToString(bytes);
}
public int readU4Int() {
byte[] bytes = Arrays.copyOfRange(this.bytes, pos, pos + 4);
pos += 4;
return bytesToInt(bytes);
}
public static String bytesToString(byte[] bytes) {
return toHexString(bytes);
}
public static int bytesToInt(byte[] bytes) {
return Integer.valueOf(toHexString(bytes), 16);
}
public static String toHexString(byte[] bytes) {
StringBuilder builder = new StringBuilder();
for (byte b : bytes) {
builder.append(Integer.toHexString(b & 0xFF));
}
return builder.toString();
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/ClassReader.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 2,518
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Double_info extends CONSTANT {
private int high_bytes;
private int low_bytes;
@Override
public int getTag() {
return 6;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Double_info constant = new CONSTANT_Double_info();
constant.setTag(getTag());
constant.setHigh_bytes(classReader.readU4Int());
constant.setLow_bytes(classReader.readU4Int());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Double_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 134
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Methodref_info extends CONSTANT {
private int class_index;
private int name_and_type_index;
@Override
public int getTag() {
return 10;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Methodref_info constant = new CONSTANT_Methodref_info();
constant.setTag(getTag());
constant.setClass_index(classReader.readU2());
constant.setName_and_type_index(classReader.readU2());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Methodref_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 138
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Long_info extends CONSTANT {
private int high_bytes;
private int low_bytes;
@Override
public int getTag() {
return 5;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Long_info constant = new CONSTANT_Long_info();
constant.setTag(getTag());
constant.setHigh_bytes(classReader.readU4Int());
constant.setLow_bytes(classReader.readU4Int());
return constant;
}
public long toLong() {
return ((long) high_bytes << 32) + low_bytes;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Long_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 158
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Float_info extends CONSTANT {
private int value;
@Override
public int getTag() {
return 4;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Float_info constant = new CONSTANT_Float_info();
constant.setTag(getTag());
constant.setValue(classReader.readU4Int());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Float_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 113
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Class_info extends CONSTANT {
private int name_index;
@Override
public int getTag() {
return 7;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Class_info constant_class = new CONSTANT_Class_info();
constant_class.setTag(getTag());
constant_class.setName_index(classReader.readU2());
return constant_class;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Class_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 118
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_Inter_info extends CONSTANT {
private int value;
@Override
public int getTag() {
return 3;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_Inter_info constant = new CONSTANT_Inter_info();
constant.setTag(getTag());
constant.setValue(classReader.readU4Int());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_Inter_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 113
|
```java
package com.github.jvmgo.clazz.method;
import com.github.jvmgo.clazz.attribute.Attribute_info;
import com.github.jvmgo.clazz.attribute.Code;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class Method_info {
private String access_flag;
private String name;
private String descriptor;
private int attributes_count;
private Attribute_info[] attributes;
public String accessFlagsToString(String s) {
StringBuilder builder = new StringBuilder();
switch (s.charAt(3)) {
case '0':
break;
case '1':
builder.append("ACC_PUBLIC").append(" ");
break;
case '2':
builder.append("ACC_PRIVATE").append(" ");
break;
case '4':
builder.append("ACC_PROTECTED").append(" ");
break;
case '8':
builder.append("ACC_STATIC").append(" ");
break;
case '9':
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(2)) {
case '0':
break;
case '1':
builder.append("ACC_FINAL").append(" ");
break;
case '2':
builder.append("ACC_SYNCHRONIZED").append(" ");
break;
case '4':
builder.append("ACC_BRIDGE").append(" ");
break;
case '8':
builder.append("ACC_VARARGS").append(" ");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(1)) {
case '0':
break;
case '1':
builder.append("ACC_NATIVE");
break;
case '4':
builder.append("ACC_ABSTRACT");
break;
case '8':
builder.append("ACC_STRICT");
break;
default:
throw new RuntimeException("can not parse access flag");
}
switch (s.charAt(0)) {
case '0':
break;
case '1':
builder.append("ACC_SYNTHETIC");
break;
default:
throw new RuntimeException("can not parse access flag");
}
return builder.toString();
}
public Code getCodeAttribute() {
for (Attribute_info attribute_info : attributes) {
if (attribute_info instanceof Code) {
return (Code) attribute_info;
}
}
return null;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/method/Method_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 513
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
import java.util.HashMap;
@Getter
@Setter
public abstract class CONSTANT {
private int tag;
public abstract int getTag();
protected abstract CONSTANT parse(ClassReader classReader);
private static HashMap<Integer, CONSTANT> map = new HashMap<>();
public static CONSTANT parseConstant(int tag, ClassReader classReader) {
CONSTANT constant = map.get(tag);
return constant.parse(classReader);
}
static {
CONSTANT_Class_info constant_class = new CONSTANT_Class_info();
map.put(constant_class.getTag(), constant_class);
CONSTANT_Double_info constant_double_info = new CONSTANT_Double_info();
map.put(constant_double_info.getTag(), constant_double_info);
CONSTANT_Fieldref constant_fieldref = new CONSTANT_Fieldref();
map.put(constant_fieldref.getTag(), constant_fieldref);
CONSTANT_Float_info constant_float_info = new CONSTANT_Float_info();
map.put(constant_float_info.getTag(), constant_float_info);
CONSTANT_Inter_info constant_inter_info = new CONSTANT_Inter_info();
map.put(constant_inter_info.getTag(), constant_inter_info);
CONSTANT_InterfaceMethodref_info constant_interfaceMethodref_info =
new CONSTANT_InterfaceMethodref_info();
map.put(constant_interfaceMethodref_info.getTag(), constant_interfaceMethodref_info);
CONSTANT_InvokeDynamic_info constant_invokeDynamic_info = new CONSTANT_InvokeDynamic_info();
map.put(constant_invokeDynamic_info.getTag(), constant_invokeDynamic_info);
CONSTANT_Long_info constant_long_info = new CONSTANT_Long_info();
map.put(constant_long_info.getTag(), constant_long_info);
CONSTANT_MethodHandle_info constant_methodHandle_info = new CONSTANT_MethodHandle_info();
map.put(constant_methodHandle_info.getTag(), constant_methodHandle_info);
CONSTANT_Methodref_info constant_methodref_info = new CONSTANT_Methodref_info();
map.put(constant_methodref_info.getTag(), constant_methodref_info);
CONSTANT_MethodType_info constant_methodType_info = new CONSTANT_MethodType_info();
map.put(constant_methodType_info.getTag(), constant_methodType_info);
CONSTANT_NameAndType_info constant_nameAndType_info = new CONSTANT_NameAndType_info();
map.put(constant_nameAndType_info.getTag(), constant_nameAndType_info);
CONSTANT_String_info constant_string_info = new CONSTANT_String_info();
map.put(constant_string_info.getTag(), constant_string_info);
CONSTANT_Utf8_info constant_utf8_info = new CONSTANT_Utf8_info();
map.put(constant_utf8_info.getTag(), constant_utf8_info);
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 526
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_String_info extends CONSTANT {
private int string_index;
@Override
public int getTag() {
return 8;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_String_info constant = new CONSTANT_String_info();
constant.setTag(getTag());
constant.setString_index(classReader.readU2());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_String_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 114
|
```java
package com.github.jvmgo.clazz.constant;
import com.github.jvmgo.clazz.ClassReader;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CONSTANT_NameAndType_info extends CONSTANT {
private int name_index;
private int descriptor_index;
@Override
public int getTag() {
return 12;
}
@Override
public CONSTANT parse(ClassReader classReader) {
CONSTANT_NameAndType_info constant = new CONSTANT_NameAndType_info();
constant.setTag(getTag());
constant.setName_index(classReader.readU2());
constant.setDescriptor_index(classReader.readU2());
return constant;
}
}
```
|
/content/code_sandbox/v1/code/java/jvmgo_java/ch05/src/main/java/com/github/jvmgo/clazz/constant/CONSTANT_NameAndType_info.java
|
java
| 2016-01-06T13:13:45
| 2024-08-16T13:42:58
|
jvmgo-book
|
zxh0/jvmgo-book
| 1,605
| 137
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.