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 |
|---|---|---|---|---|---|---|---|---|
```go
package loads
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
// Load float from local variable
type FLOAD struct{ base.Index8Instruction }
func (self *FLOAD) Execute(frame *rtda.Frame) {
_fload(frame, self.Index)
}
type FLOAD_0 struct{ base.NoOperandsInstruction }
func (self *FLOAD_0) Execut... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/loads/fload.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 263 |
```go
package classfile
/*
CONSTANT_MethodHandle_info {
u1 tag;
u1 reference_kind;
u2 reference_index;
}
*/
type ConstantMethodHandleInfo struct {
referenceKind uint8
referenceIndex uint16
}
func (self *ConstantMethodHandleInfo) readInfo(reader *ClassReader) {
self.referenceKind = reader.readUint8()
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/cp_invoke_dynamic.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 241 |
```go
package references
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
// Set field in object
type PUT_FIELD struct{ base.Index16Instruction }
func (self *PUT_FIELD) Execute(frame *rtda.Frame) {
currentMethod := frame.Method()
currentClass := currentMethod.Class()
cp... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/references/putfield.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 453 |
```go
package references
import "reflect"
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
// Throw exception or error
type ATHROW struct{ base.NoOperandsInstruction }
func (self *ATHROW) Execute(frame *rtda.Frame) {
ex := frame.OperandStack().PopRef()
if ex == nil {
p... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/references/athrow.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 373 |
```go
package comparisons
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
// Compare long
type LCMP struct{ base.NoOperandsInstruction }
func (self *LCMP) Execute(frame *rtda.Frame) {
stack := frame.OperandStack()
v2 := stack.PopLong()
v1 := stack.PopLong()
if v1 > v2 {
stack.PushInt(1)
} else ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/comparisons/lcmp.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 123 |
```go
package main
func main() {
cmd := parseCmd()
if cmd.versionFlag {
println("version 0.0.1")
} else if cmd.helpFlag || cmd.class == "" {
printUsage()
} else {
newJVM(cmd).start()
}
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/main.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 61 |
```go
package classfile
/*
Exceptions_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 number_of_exceptions;
u2 exception_index_table[number_of_exceptions];
}
*/
type ExceptionsAttribute struct {
exceptionIndexTable []uint16
}
func (self *ExceptionsAttribute) readInfo(reader *ClassReader)... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/attr_exceptions.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 104 |
```go
package conversions
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
// Convert int to byte
type I2B struct{ base.NoOperandsInstruction }
func (self *I2B) Execute(frame *rtda.Frame) {
stack := frame.OperandStack()
i := stack.PopInt()
b := int32(int8(i))
stack.PushInt(b)
}
// Convert int to c... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/conversions/i2x.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 392 |
```go
package stores
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
// Store long into local variable
type LSTORE struct{ base.Index8Instruction }
func (self *LSTORE) Execute(frame *rtda.Frame) {
_lstore(frame, uint(self.Index))
}
type LSTORE_0 struct{ base.NoOperandsInstruction }
func (self *LSTO... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/instructions/stores/lstore.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 265 |
```go
package classfile
/*
Code_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 max_stack;
u2 max_locals;
u4 code_length;
u1 code[code_length];
u2 exception_table_length;
{ u2 start_pc;
u2 end_pc;
u2 handler_pc;
u2 catch_type;
} exception_table... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/attr_code.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 583 |
```go
package classfile
/*
InnerClasses_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 number_of_classes;
{ u2 inner_class_info_index;
u2 outer_class_info_index;
u2 inner_name_index;
u2 inner_class_access_flags;
} classes[number_of_classes];
}
*/
type InnerCl... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/attr_inner_classes.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 238 |
```go
package classfile
/*
CONSTANT_Fieldref_info {
u1 tag;
u2 class_index;
u2 name_and_type_index;
}
CONSTANT_Methodref_info {
u1 tag;
u2 class_index;
u2 name_and_type_index;
}
CONSTANT_InterfaceMethodref_info {
u1 tag;
u2 class_index;
u2 name_and_type_index;
}
*/
type ConstantFiel... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/cp_member_ref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 241 |
```go
package classfile
var (
_attrDeprecated = &DeprecatedAttribute{}
_attrSynthetic = &SyntheticAttribute{}
)
/*
attribute_info {
u2 attribute_name_index;
u4 attribute_length;
u1 info[attribute_length];
}
*/
type AttributeInfo interface {
readInfo(reader *ClassReader)
}
func readAttributes(reader *... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/attribute_info.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 496 |
```go
package classfile
/*
CONSTANT_String_info {
u1 tag;
u2 string_index;
}
*/
type ConstantStringInfo struct {
cp ConstantPool
stringIndex uint16
}
func (self *ConstantStringInfo) readInfo(reader *ClassReader) {
self.stringIndex = reader.readUint16()
}
func (self *ConstantStringInfo) String() st... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/cp_string.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 90 |
```go
package native
import "jvmgo/ch11/rtda"
type NativeMethod func(frame *rtda.Frame)
var registry = map[string]NativeMethod{}
func emptyNativeMethod(frame *rtda.Frame) {
// do nothing
}
func Register(className, methodName, methodDescriptor string, method NativeMethod) {
key := className + "~" + methodName + "... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/registry.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 177 |
```go
package classfile
/*
LocalVariableTypeTable_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 local_variable_type_table_length;
{ u2 start_pc;
u2 length;
u2 name_index;
u2 signature_index;
u2 index;
} local_variable_type_table[local_variable_type_t... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classfile/attr_local_variable_type_table.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 267 |
```go
package lang
import "fmt"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const jlThrowable = "java/lang/Throwable"
type StackTraceElement struct {
fileName string
className string
methodName string
lineNumber int
}
func (self *StackTraceElement) String() string {
ret... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Throwable.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 406 |
```go
package lang
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
/*
Constructor(Class<T> declaringClass,
Class<?>[] parameterTypes,
Class<?>[] checkedExceptions,
int modifiers,
int slot,
String signature,
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Class_getDeclaredConstructors0.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 573 |
```go
package lang
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const jlString = "java/lang/String"
func init() {
native.Register(jlString, "intern", "()Ljava/lang/String;", intern)
}
// public native String intern();
// ()Ljava/lang/String;
func intern(frame *rtda.Frame) {
th... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/String.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 121 |
```go
package lang
import "runtime"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const jlRuntime = "java/lang/Runtime"
func init() {
native.Register(jlRuntime, "availableProcessors", "()I", availableProcessors)
}
// public native int availableProcessors();
// ()I
func availableProcessors(frame *rtda.Frame) ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Runtime.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 108 |
```go
package lang
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("java/lang/Thread", "currentThread", "()Ljava/lang/Thread;", currentThread)
native.Register("java/lang/Thread", "setPriority0", "(I)V", setPriority0)
native.Register("java/lang/Thread", "isAlive", "()Z", isAlive)
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Thread.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 383 |
```go
package lang
import "runtime"
import "time"
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const jlSystem = "java/lang/System"
func init() {
native.Register(jlSystem, "arraycopy", "(Ljava/lang/Object;ILjava/lang/Object;II)V", arraycopy)
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/System.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,262 |
```go
package lang
import "unsafe"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const jlObject = "java/lang/Object"
func init() {
native.Register(jlObject, "getClass", "()Ljava/lang/Class;", getClass)
native.Register(jlObject, "hashCode", "()I", hashCode)
native.Register(jlObject, "clone", "()Ljava/lang/Ob... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Object.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 325 |
```go
package lang
import "math"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const jlDouble = "java/lang/Double"
func init() {
native.Register(jlDouble, "doubleToRawLongBits", "(D)J", doubleToRawLongBits)
native.Register(jlDouble, "longBitsToDouble", "(J)D", longBitsToDouble)
}
// public static native lon... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Double.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 226 |
```go
package lang
import "math"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const jlFloat = "java/lang/Float"
func init() {
native.Register(jlFloat, "floatToRawIntBits", "(F)I", floatToRawIntBits)
native.Register(jlFloat, "intBitsToFloat", "(I)F", intBitsToFloat)
}
// public static native int floatToRawI... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Float.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 225 |
```go
package lang
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
/*
Method(Class<?> declaringClass,
String name,
Class<?>[] parameterTypes,
Class<?> returnType,
Class<?>[] checkedExceptions,
int modifiers,
int slot,
String... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Class_getDeclaredMethods0.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 647 |
```go
package lang
import "unsafe"
import "jvmgo/ch11/rtda/heap"
// []*Class => Class[]
func toClassArr(loader *heap.ClassLoader, classes []*heap.Class) *heap.Object {
arrLen := len(classes)
classArrClass := loader.LoadClass("java/lang/Class").ArrayClass()
classArr := classArrClass.NewArray(uint(arrLen))
if arr... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Class_helper.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 268 |
```go
package lang
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
/*
Field(Class<?> declaringClass,
String name,
Class<?> type,
int modifiers,
int slot,
String signature,
byte[] annotations)
*/
const _fieldConstructorDescriptor = "" +
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Class_getDeclaredFields0.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 524 |
```go
package security
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("java/security/AccessController", "doPrivileged", "(Ljava/security/PrivilegedAction;)Ljava/lang/Object;", doPrivileged)
native.Register("java/security/AccessController", "do... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/security/AccessController.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 337 |
```go
package io
import "path/filepath"
import "os"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const unixfs = "java/io/UnixFileSystem"
func init() {
native.Register(unixfs, "canonicalize0", "(Ljava/lang/String;)Ljava/lang/String;", canonicalize0)
native.Register(unixfs, "getB... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/io/UnixFileSystem.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 478 |
```go
package lang
import "strings"
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const jlClass = "java/lang/Class"
func init() {
native.Register(jlClass, "getPrimitiveClass", "(Ljava/lang/String;)Ljava/lang/Class;", getPrimitiveClass)
nativ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/lang/Class.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,441 |
```go
package io
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const fd = "java/io/FileDescriptor"
func init() {
native.Register(fd, "set", "(I)J", set)
}
// private static native long set(int d);
// (I)J
func set(frame *rtda.Frame) {
// todo
frame.OperandStack().PushLong(0)
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/io/FileDescriptor.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 93 |
```go
package atomic
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("java/util/concurrent/atomic/AtomicLong", "VMSupportsCS8", "()Z", vmSupportsCS8)
}
func vmSupportsCS8(frame *rtda.Frame) {
frame.OperandStack().PushBoolean(false)
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/util/concurrent/atomic/AtomicLong.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 84 |
```go
package io
import "os"
import "unsafe"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
const fos = "java/io/FileOutputStream"
func init() {
native.Register(fos, "writeBytes", "([BIIZ)V", writeBytes)
}
// private native void writeBytes(byte b[], int off, int len, boolean append) throws IOException;
// ([B... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/java/io/FileOutputStream.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 238 |
```go
package io
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("sun/io/Win32ErrorMode", "setErrorMode", "(J)J", setErrorMode)
}
func setErrorMode(frame *rtda.Frame) {
// todo
frame.OperandStack().PushLong(0)
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/io/Win32ErrorMode.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 79 |
```go
package reflect
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
func init() {
native.Register("sun/reflect/Reflection", "getCallerClass", "()Ljava/lang/Class;", getCallerClass)
native.Register("sun/reflect/Reflection", "getClassAccessFlags", "(Ljava/lang/Class;)I", getClassAc... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/reflect/Reflection.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 279 |
```go
package reflect
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
func init() {
native.Register("sun/reflect/NativeConstructorAccessorImpl", "newInstance0", "(Ljava/lang/reflect/Constructor;[Ljava/lang/Object;)Ljava/lang/Object;", newInstanc... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/reflect/NativeConstructorAccessorImpl.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 708 |
```go
package misc
var _allocated = map[int64][]byte{}
var _nextAddress = int64(64) // not zero!
func allocate(size int64) (address int64) {
mem := make([]byte, size)
address = _nextAddress
_allocated[address] = mem
_nextAddress += size
return
}
func reallocate(address, size int64) int64 {
if size == 0 {
ret... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/malloc.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 290 |
```go
package misc
import "jvmgo/ch11/instructions/base"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("sun/misc/VM", "initialize", "()V", initialize)
}
// private static native void initialize();
// ()V
func initialize(frame *rtda.Frame) {
classLoader := frame.Method().Class().... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/VM.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 130 |
```go
package misc
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
import "jvmgo/ch11/rtda/heap"
const miscUnsafe = "sun/misc/Unsafe"
func init() {
native.Register(miscUnsafe, "arrayBaseOffset", "(Ljava/lang/Class;)I", arrayBaseOffset)
native.Register(miscUnsafe, "arrayIndexScale", "(Ljava/lang/Class;)I", arra... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/Unsafe.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,639 |
```go
package misc
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
native.Register("sun/misc/URLClassPath", "getLookupCacheURLs", "(Ljava/lang/ClassLoader;)[Ljava/net/URL;", getLookupCacheURLs)
}
// private static native URL[] getLookupCacheURLs(ClassLoader var0);
// (Ljava/lang/ClassLoader;)[Ljav... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/URLClassPath.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 118 |
```go
package misc
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
_signal(findSignal, "findSignal", "(Ljava/lang/String;)I")
_signal(handle0, "handle0", "(IJ)J")
}
func _signal(method func(frame *rtda.Frame), name, desc string) {
native.Register("sun/misc/Signal", name, desc, method)
}
// priv... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/Signal.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 234 |
```go
package rtda
import "jvmgo/ch11/rtda/heap"
/*
JVM
Thread
pc
Stack
Frame
LocalVars
OperandStack
*/
type Thread struct {
pc int // the address of the instruction currently being executed
stack *Stack
// todo
}
func NewThread() *Thread {
return &Thread{
stack: newStack(102... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/thread.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 275 |
```go
package misc
import "math"
import "encoding/binary"
import "jvmgo/ch11/native"
import "jvmgo/ch11/rtda"
func init() {
_unsafe(allocateMemory, "allocateMemory", "(J)J")
_unsafe(reallocateMemory, "reallocateMemory", "(JJ)J")
_unsafe(freeMemory, "freeMemory", "(J)V")
_unsafe(addressSize, "addressSize", "()I")
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/native/sun/misc/Unsafe_mem.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,902 |
```go
package rtda
import "math"
import "jvmgo/ch11/rtda/heap"
type OperandStack struct {
size uint
slots []Slot
}
func newOperandStack(maxStack uint) *OperandStack {
if maxStack > 0 {
return &OperandStack{
slots: make([]Slot, maxStack),
}
}
return nil
}
func (self *OperandStack) PushInt(val int32) {
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/operand_stack.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 666 |
```go
package rtda
import "math"
import "jvmgo/ch11/rtda/heap"
type LocalVars []Slot
func newLocalVars(maxLocals uint) LocalVars {
if maxLocals > 0 {
return make([]Slot, maxLocals)
}
return nil
}
func (self LocalVars) SetInt(index uint, val int32) {
self[index].num = val
}
func (self LocalVars) GetInt(index u... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/local_vars.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 459 |
```go
package rtda
import "jvmgo/ch11/rtda/heap"
type Slot struct {
num int32
ref *heap.Object
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/slot.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 33 |
```go
package rtda
import "jvmgo/ch11/rtda/heap"
// stack frame
type Frame struct {
lower *Frame // stack is implemented as linked list
localVars LocalVars
operandStack *OperandStack
thread *Thread
method *heap.Method
nextPC int // the next instruction after the call
}
func newFrame... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/frame.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 272 |
```go
package rtda
// jvm stack
type Stack struct {
maxSize uint
size uint
_top *Frame // stack is implemented as linked list
}
func newStack(maxSize uint) *Stack {
return &Stack{
maxSize: maxSize,
}
}
func (self *Stack) push(frame *Frame) {
if self.size >= self.maxSize {
panic("java.lang.StackOverfl... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/jvm_stack.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 303 |
```go
package rtda
import "jvmgo/ch11/rtda/heap"
func NewShimFrame(thread *Thread, ops *OperandStack) *Frame {
return &Frame{
thread: thread,
method: heap.ShimReturnMethod(),
operandStack: ops,
}
}
//func newAthrowFrame(thread *Thread, ex *heap.Object, initArgs []interface{}) *Frame {
// // stack... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/shim_frames.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 203 |
```go
package heap
// symbolic reference
type SymRef struct {
cp *ConstantPool
className string
class *Class
}
func (self *SymRef) ResolvedClass() *Class {
if self.class == nil {
self.resolveClassRef()
}
return self.class
}
// jvms8 5.4.3.1
func (self *SymRef) resolveClassRef() {
d := self.cp.cla... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_symref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 129 |
```go
package heap
import "jvmgo/ch11/classfile"
type MethodRef struct {
MemberRef
method *Method
}
func newMethodRef(cp *ConstantPool, refInfo *classfile.ConstantMethodrefInfo) *MethodRef {
ref := &MethodRef{}
ref.cp = cp
ref.copyMemberRefInfo(&refInfo.ConstantMemberrefInfo)
return ref
}
func (self *MethodRe... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_methodref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 277 |
```go
package heap
import "fmt"
import "jvmgo/ch11/classfile"
type Constant interface{}
type ConstantPool struct {
class *Class
consts []Constant
}
func newConstantPool(class *Class, cfCp classfile.ConstantPool) *ConstantPool {
cpCount := len(cfCp)
consts := make([]Constant, cpCount)
rtCp := &ConstantPool{cla... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/constant_pool.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 517 |
```go
package heap
import "strings"
import "jvmgo/ch11/classfile"
// name, superClassName and interfaceNames are all binary names(jvms8-4.2.1)
type Class struct {
accessFlags uint16
name string // thisClassName
superClassName string
interfaceNames []string
constantPool *ConstantPool... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/class.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,576 |
```go
package heap
import "jvmgo/ch11/classfile"
type FieldRef struct {
MemberRef
field *Field
}
func newFieldRef(cp *ConstantPool, refInfo *classfile.ConstantFieldrefInfo) *FieldRef {
ref := &FieldRef{}
ref.cp = cp
ref.copyMemberRefInfo(&refInfo.ConstantMemberrefInfo)
return ref
}
func (self *FieldRef) Resol... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_fieldref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 308 |
```go
package heap
// jvms8 6.5.instanceof
// jvms8 6.5.checkcast
func (self *Class) IsAssignableFrom(other *Class) bool {
s, t := other, self
if s == t {
return true
}
if !s.IsArray() {
if !s.IsInterface() {
// s is class
if !t.IsInterface() {
// t is not interface
return s.IsSubClassOf(t)
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/class_hierarchy.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 568 |
```go
package heap
import "jvmgo/ch11/classfile"
type ClassRef struct {
SymRef
}
func newClassRef(cp *ConstantPool, classInfo *classfile.ConstantClassInfo) *ClassRef {
ref := &ClassRef{}
ref.cp = cp
ref.className = classInfo.Name()
return ref
}
``` | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_classref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 68 |
```go
package heap
import "strings"
type MethodDescriptorParser struct {
raw string
offset int
parsed *MethodDescriptor
}
func parseMethodDescriptor(descriptor string) *MethodDescriptor {
parser := &MethodDescriptorParser{}
return parser.parse(descriptor)
}
func (self *MethodDescriptorParser) parse(descript... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/method_descriptor_parser.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 675 |
```go
package heap
import "jvmgo/ch11/classfile"
type ClassMember struct {
accessFlags uint16
name string
descriptor string
signature string
annotationData []byte // RuntimeVisibleAnnotations_attribute
class *Class
}
func (self *ClassMember) copyMemberInfo(memberInfo *classfile.M... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/class_member.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 458 |
```go
package heap
import "unicode/utf16"
var internedStrings = map[string]*Object{}
// todo
// go string -> java.lang.String
func JString(loader *ClassLoader, goStr string) *Object {
if internedStr, ok := internedStrings[goStr]; ok {
return internedStr
}
chars := stringToUtf16(goStr)
jChars := &Object{loader... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/string_pool.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 342 |
```go
package heap
var primitiveTypes = map[string]string{
"void": "V",
"boolean": "Z",
"byte": "B",
"short": "S",
"int": "I",
"long": "J",
"char": "C",
"float": "F",
"double": "D",
}
// [XXX -> [[XXX
// int -> [I
// XXX -> [LXXX;
func getArrayClassName(className string) string {
return... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/class_name_helper.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 387 |
```go
package heap
import "jvmgo/ch11/classfile"
type MemberRef struct {
SymRef
name string
descriptor string
}
func (self *MemberRef) copyMemberRefInfo(refInfo *classfile.ConstantMemberrefInfo) {
self.className = refInfo.ClassName()
self.name, self.descriptor = refInfo.NameAndDescriptor()
}
func (self *... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_memberref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 107 |
```go
package heap
type Object struct {
class *Class
data interface{} // Slots for Object, []int32 for int[] ...
extra interface{}
}
// create normal (non-array) object
func newObject(class *Class) *Object {
return &Object{
class: class,
data: newSlots(class.instanceSlotCount),
}
}
// getters & setters
fu... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/object.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 374 |
```go
package heap
type MethodDescriptor struct {
parameterTypes []string
returnType string
}
func (self *MethodDescriptor) addParameterType(t string) {
pLen := len(self.parameterTypes)
if pLen == cap(self.parameterTypes) {
s := make([]string, pLen, pLen+4)
copy(s, self.parameterTypes)
self.parameterTyp... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/method_descriptor.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 97 |
```go
package heap
import "jvmgo/ch11/classfile"
type Method struct {
ClassMember
maxStack uint
maxLocals uint
code []byte
exceptionTable ExceptionTable // todo: rename
lineNumberTable *classfile.LineNumberTableAttribute
exceptions *... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/method.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,317 |
```go
package heap
import "fmt"
import "jvmgo/ch11/classfile"
import "jvmgo/ch11/classpath"
/*
class names:
- primitive types: boolean, byte, int ...
- primitive arrays: [Z, [B, [I ...
- non-array classes: java/lang/Object ...
- array classes: [Ljava/lang/Object; ...
*/
type ClassLoader struct {
cp ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/class_loader.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 1,520 |
```go
package heap
import "jvmgo/ch11/classfile"
type ExceptionTable []*ExceptionHandler
type ExceptionHandler struct {
startPc int
endPc int
handlerPc int
catchType *ClassRef
}
func newExceptionTable(entries []*classfile.ExceptionTableEntry, cp *ConstantPool) ExceptionTable {
table := make([]*ExceptionH... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/exception_table.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 315 |
```go
package heap
const (
ACC_PUBLIC = 0x0001 // class field method
ACC_PRIVATE = 0x0002 // field method
ACC_PROTECTED = 0x0004 // field method
ACC_STATIC = 0x0008 // field method
ACC_FINAL = 0x0010 // class field method
ACC_SUPER = 0x0020 // class
ACC_SYNCHR... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/access_flags.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 278 |
```go
package heap
func LookupMethodInClass(class *Class, name, descriptor string) *Method {
for c := class; c != nil; c = c.superClass {
for _, method := range c.methods {
if method.name == name && method.descriptor == descriptor {
return method
}
}
}
return nil
}
func lookupMethodInInterfaces(iface... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/method_lookup.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 164 |
```go
package heap
import "math"
type Slot struct {
num int32
ref *Object
}
type Slots []Slot
func newSlots(slotCount uint) Slots {
if slotCount > 0 {
return make([]Slot, slotCount)
}
return nil
}
func (self Slots) SetInt(index uint, val int32) {
self[index].num = val
}
func (self Slots) GetInt(index uint)... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/slots.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 373 |
```go
package heap
import "jvmgo/ch11/classfile"
type InterfaceMethodRef struct {
MemberRef
method *Method
}
func newInterfaceMethodRef(cp *ConstantPool, refInfo *classfile.ConstantInterfaceMethodrefInfo) *InterfaceMethodRef {
ref := &InterfaceMethodRef{}
ref.cp = cp
ref.copyMemberRefInfo(&refInfo.ConstantMembe... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/cp_interface_methodref.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 300 |
```go
package heap
var (
_shimClass = &Class{name: "~shim"}
_returnCode = []byte{0xb1} // return
_athrowCode = []byte{0xbf} // athrow
_returnMethod = &Method{
ClassMember: ClassMember{
accessFlags: ACC_STATIC,
name: "<return>",
class: _shimClass,
},
code: _returnCode,
}
_athrowMeth... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/shim_methods.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 280 |
```go
package heap
func (self *Object) Bytes() []int8 {
return self.data.([]int8)
}
func (self *Object) Shorts() []int16 {
return self.data.([]int16)
}
func (self *Object) Ints() []int32 {
return self.data.([]int32)
}
func (self *Object) Longs() []int64 {
return self.data.([]int64)
}
func (self *Object) Chars() []... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/array_object.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 783 |
```go
package heap
import "jvmgo/ch11/classfile"
type Field struct {
ClassMember
constValueIndex uint
slotId uint
}
func newFields(class *Class, cfFields []*classfile.MemberInfo) []*Field {
fields := make([]*Field, len(cfFields))
for i, cfField := range cfFields {
fields[i] = &Field{}
fields[i].cla... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/field.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 326 |
```go
package heap
func (self *Class) IsArray() bool {
return self.name[0] == '['
}
func (self *Class) ComponentClass() *Class {
componentClassName := getComponentClassName(self.name)
return self.loader.LoadClass(componentClassName)
}
func (self *Class) NewArray(count uint) *Object {
if !self.IsArray() {
panic... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/array_class.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 305 |
```go
package classpath
import "os"
import "strings"
// :(linux/unix) or ;(windows)
const pathListSeparator = string(os.PathListSeparator)
type Entry interface {
// className: fully/qualified/ClassName.class
readClass(className string) ([]byte, Entry, error)
String() string
}
func newEntry(path string) Entry {
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/entry.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 168 |
```go
package heap
func (self *Object) Clone() *Object {
return &Object{
class: self.class,
data: self.cloneData(),
}
}
func (self *Object) cloneData() interface{} {
switch self.data.(type) {
case []int8:
elements := self.data.([]int8)
elements2 := make([]int8, len(elements))
copy(elements2, elements)
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/rtda/heap/object_clone.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 423 |
```go
package classpath
import "errors"
import "strings"
type CompositeEntry []Entry
func newCompositeEntry(pathList string) CompositeEntry {
compositeEntry := []Entry{}
for _, path := range strings.Split(pathList, pathListSeparator) {
entry := newEntry(path)
compositeEntry = append(compositeEntry, entry)
}
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/entry_composite.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 202 |
```go
package classpath
import "archive/zip"
import "errors"
import "io/ioutil"
import "path/filepath"
type ZipEntry struct {
absPath string
zipRC *zip.ReadCloser
}
func newZipEntry(path string) *ZipEntry {
absPath, err := filepath.Abs(path)
if err != nil {
panic(err)
}
return &ZipEntry{absPath, nil}
}
f... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/entry_zip.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 374 |
```go
package classpath
import "os"
import "path/filepath"
import "strings"
func newWildcardEntry(path string) CompositeEntry {
baseDir := path[:len(path)-1] // remove *
compositeEntry := []Entry{}
walkFn := func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/entry_wildcard.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 168 |
```go
package classpath
import "io/ioutil"
import "path/filepath"
type DirEntry struct {
absDir string
}
func newDirEntry(path string) *DirEntry {
absDir, err := filepath.Abs(path)
if err != nil {
panic(err)
}
return &DirEntry{absDir}
}
func (self *DirEntry) readClass(className string) ([]byte, Entry, error)... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/entry_dir.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 131 |
```go
package classpath
import "os"
import "path/filepath"
type Classpath struct {
bootClasspath Entry
extClasspath Entry
userClasspath Entry
}
func Parse(jreOption, cpOption string) *Classpath {
cp := &Classpath{}
cp.parseBootAndExtClasspath(jreOption)
cp.parseUserClasspath(cpOption)
return cp
}
func (self... | /content/code_sandbox/v1/code/go/src/jvmgo/ch11/classpath/classpath.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 476 |
```go
package main
import "flag"
import "fmt"
import "os"
// java [-options] class [args...]
type Cmd struct {
helpFlag bool
versionFlag bool
cpOption string
XjreOption string
class string
args []string
}
func parseCmd() *Cmd {
cmd := &Cmd{}
flag.Usage = printUsage
flag.BoolVar(&cmd.hel... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/cmd.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 254 |
```go
package classfile
/*
EnclosingMethod_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 class_index;
u2 method_index;
}
*/
type EnclosingMethodAttribute struct {
cp ConstantPool
classIndex uint16
methodIndex uint16
}
func (self *EnclosingMethodAttribute) readInfo(reader *C... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_enclosing_method.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 170 |
```go
package classfile
/*
field_info {
u2 access_flags;
u2 name_index;
u2 descriptor_index;
u2 attributes_count;
attribute_info attributes[attributes_count];
}
method_info {
u2 access_flags;
u2 name_index;
u2 ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/member_info.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 326 |
```go
package main
import "fmt"
import _ "jvmgo/ch04/classfile"
import _ "jvmgo/ch04/classpath"
import "jvmgo/ch04/rtda"
func main() {
cmd := parseCmd()
if cmd.versionFlag {
fmt.Println("version 0.0.1")
} else if cmd.helpFlag || cmd.class == "" {
printUsage()
} else {
startJVM(cmd)
}
}
func startJVM(cmd ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/main.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 397 |
```go
package classfile
/*
CONSTANT_MethodHandle_info {
u1 tag;
u1 reference_kind;
u2 reference_index;
}
*/
type ConstantMethodHandleInfo struct {
referenceKind uint8
referenceIndex uint16
}
func (self *ConstantMethodHandleInfo) readInfo(reader *ClassReader) {
self.referenceKind = reader.readUint8()
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/cp_invoke_dynamic.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 241 |
```go
package classfile
/*
BootstrapMethods_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 num_bootstrap_methods;
{ u2 bootstrap_method_ref;
u2 num_bootstrap_arguments;
u2 bootstrap_arguments[num_bootstrap_arguments];
} bootstrap_methods[num_bootstrap_methods];
}
*/
... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_bootstrap_methods.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 184 |
```go
package classfile
import "fmt"
type ConstantPool []ConstantInfo
func readConstantPool(reader *ClassReader) ConstantPool {
cpCount := int(reader.readUint16())
cp := make([]ConstantInfo, cpCount)
// The constant_pool table is indexed from 1 to constant_pool_count - 1.
for i := 1; i < cpCount; i++ {
cp[i] ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/constant_pool.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 421 |
```go
package classfile
/*
Exceptions_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 number_of_exceptions;
u2 exception_index_table[number_of_exceptions];
}
*/
type ExceptionsAttribute struct {
exceptionIndexTable []uint16
}
func (self *ExceptionsAttribute) readInfo(reader *ClassReader)... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_exceptions.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 104 |
```go
package classfile
/*
LineNumberTable_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 line_number_table_length;
{ u2 start_pc;
u2 line_number;
} line_number_table[line_number_table_length];
}
*/
type LineNumberTableAttribute struct {
lineNumberTable []*LineNumberTableEn... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_line_number_table.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 255 |
```go
package classfile
/*
CONSTANT_NameAndType_info {
u1 tag;
u2 name_index;
u2 descriptor_index;
}
*/
type ConstantNameAndTypeInfo struct {
nameIndex uint16
descriptorIndex uint16
}
func (self *ConstantNameAndTypeInfo) readInfo(reader *ClassReader) {
self.nameIndex = reader.readUint16()
self.d... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/cp_name_and_type.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 88 |
```go
package classfile
/*
Deprecated_attribute {
u2 attribute_name_index;
u4 attribute_length;
}
*/
type DeprecatedAttribute struct {
MarkerAttribute
}
/*
Synthetic_attribute {
u2 attribute_name_index;
u4 attribute_length;
}
*/
type SyntheticAttribute struct {
MarkerAttribute
}
type MarkerAttribut... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_markers.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 90 |
```go
package classfile
/*
attribute_info {
u2 attribute_name_index;
u4 attribute_length;
u1 info[attribute_length];
}
*/
type UnparsedAttribute struct {
name string
length uint32
info []byte
}
func (self *UnparsedAttribute) readInfo(reader *ClassReader) {
self.info = reader.readBytes(self.length)... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_unparsed.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 96 |
```go
package classfile
/*
CONSTANT_Class_info {
u1 tag;
u2 name_index;
}
*/
type ConstantClassInfo struct {
cp ConstantPool
nameIndex uint16
}
func (self *ConstantClassInfo) readInfo(reader *ClassReader) {
self.nameIndex = reader.readUint16()
}
func (self *ConstantClassInfo) Name() string {
return... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/cp_class.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 90 |
```go
package classfile
// Constant pool tags
const (
CONSTANT_Class = 7
CONSTANT_Fieldref = 9
CONSTANT_Methodref = 10
CONSTANT_InterfaceMethodref = 11
CONSTANT_String = 8
CONSTANT_Integer = 3
CONSTANT_Float = 4
CONSTANT_Long = 5... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/constant_info.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 468 |
```go
package classfile
import "math"
/*
CONSTANT_Integer_info {
u1 tag;
u4 bytes;
}
*/
type ConstantIntegerInfo struct {
val int32
}
func (self *ConstantIntegerInfo) readInfo(reader *ClassReader) {
bytes := reader.readUint32()
self.val = int32(bytes)
}
func (self *ConstantIntegerInfo) Value() int32 {
re... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/cp_numeric.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 341 |
```go
package classfile
/*
SourceFile_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 sourcefile_index;
}
*/
type SourceFileAttribute struct {
cp ConstantPool
sourceFileIndex uint16
}
func (self *SourceFileAttribute) readInfo(reader *ClassReader) {
self.sourceFileIndex = reade... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_source_file.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 101 |
```go
package classfile
import "fmt"
/*
ClassFile {
u4 magic;
u2 minor_version;
u2 major_version;
u2 constant_pool_count;
cp_info constant_pool[constant_pool_count-1];
u2 access_flags;
u2 this_class;
u2 ... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/class_file.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 787 |
```go
package classfile
/*
ConstantValue_attribute {
u2 attribute_name_index;
u4 attribute_length;
u2 constantvalue_index;
}
*/
type ConstantValueAttribute struct {
constantValueIndex uint16
}
func (self *ConstantValueAttribute) readInfo(reader *ClassReader) {
self.constantValueIndex = reader.readUint16... | /content/code_sandbox/v1/code/go/src/jvmgo/ch04/classfile/attr_constant_value.go | go | 2016-01-06T13:13:45 | 2024-08-16T13:42:58 | jvmgo-book | zxh0/jvmgo-book | 1,605 | 95 |
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