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Kha/Tools/linux_arm64/std/cpp/vm/Debugger.hx
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353
Kha/Tools/linux_arm64/std/cpp/vm/Debugger.hx
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/*
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* Copyright (C)2005-2019 Haxe Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package cpp.vm;
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/**
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Parameter describes a function parameter. Instances of this class are
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embedded in stack frame objects to describe the function parameters that
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were used in the invocation of the function that defines that stack frame.
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**/
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class Parameter {
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public var name(default, null):String;
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public var value(default, null):Dynamic;
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public function new(name:String, value:Dynamic) {
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this.name = name;
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this.value = value;
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}
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}
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/**
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`StackFrame` describes one call stack frame.
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**/
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class StackFrame {
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public var fileName(default, null):String;
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public var lineNumber(default, null):Int;
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public var className(default, null):String;
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public var functionName(default, null):String;
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public var parameters(default, null):Array<Parameter>;
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public function new(fileName:String, lineNumber:Int, className:String, functionName:String) {
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this.fileName = fileName;
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this.lineNumber = lineNumber;
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this.className = className;
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this.functionName = functionName;
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this.parameters = new Array<Parameter>();
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}
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}
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/**
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`ThreadInfo` describes the state of a single thread.
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**/
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class ThreadInfo {
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public static inline var STATUS_RUNNING = 1;
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public static inline var STATUS_STOPPED_BREAK_IMMEDIATE = 2;
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public static inline var STATUS_STOPPED_BREAKPOINT = 3;
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public static inline var STATUS_STOPPED_UNCAUGHT_EXCEPTION = 4;
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public static inline var STATUS_STOPPED_CRITICAL_ERROR = 5;
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/** 0 is never a valid thread number **/
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public var number(default, null):Int;
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public var status(default, null):Int;
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/** If status is "stopped breakpoint", this is the breakpoint number **/
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public var breakpoint(default, null):Int;
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/** If status is "critical error", this describes the error **/
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public var criticalErrorDescription(default, null):String;
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/** Stack will be listed with the lowest frame first **/
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public var stack(default, null):Array<StackFrame>;
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public function new(number:Int, status:Int, breakpoint:Int = -1, criticalErrorDescription:String = null) {
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this.number = number;
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this.status = status;
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this.breakpoint = breakpoint;
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this.criticalErrorDescription = criticalErrorDescription;
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this.stack = new Array<StackFrame>();
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}
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}
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/**
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This class wraps the hxcpp C++ implementation to provide a Haxe interface
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to the low level debugging features
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**/
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class Debugger {
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public static inline var THREAD_CREATED = 1;
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public static inline var THREAD_TERMINATED = 2;
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public static inline var THREAD_STARTED = 3;
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public static inline var THREAD_STOPPED = 4;
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public static inline var STEP_INTO = 1;
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public static inline var STEP_OVER = 2;
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public static inline var STEP_OUT = 3;
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/**
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This tagging value is returned by `getStackVariableValue()` and
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`setStackVariableValue()` if the requested value does not exist at the
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requested stack frame
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**/
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public static var NONEXISTENT_VALUE = "NONEXISTENT_VALUE";
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/**
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This tagging value is returned by `getStackVariableValue()` and
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`setStackVariableValue()` if the stack variable that is being set is on a
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thread that is running, in which case the set does not take place.
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**/
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public static var THREAD_NOT_STOPPED = "THREAD_NOT_STOPPED";
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/**
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Sets the handler callback to be made when asynchronous events occur,
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specifically, when threads are created, terminated, started, or
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stopped. The calling thread becomes the "debugger" thread, which means
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that it will be discluded from any breakpoints and will not be reported
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on by any thread reporting requests.
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Be aware that this callback is made asynchronously and possibly by
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multiple threads simultaneously.
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Setting this to `null` prevents further callbacks.
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Throws a string exception if the program does not support debugging
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because it was not compiled with the `HXCPP_DEBUGGER` flag set.
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@param handler is a function that will be called back by asynchronous
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thread events. Note that this function is called directly from
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the thread experiencing the event and the handler should return
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quickly to avoid blocking the calling thread unnecessarily.
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The parameters to handler are:
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- `threadNumber`, the thread number of the event
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- event, one of `THREAD_CREATED`, `THREAD_TERMINATED`,
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`THREAD_STARTED`, or `THREAD_STOPPED`
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- stackFrame, the stack frame number at which the thread is stopped,
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undefined if event is not `THREAD_STOPPED`
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- `className`, the class name at which the thread is stopped,
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undefined if event is not `THREAD_STOPPED`
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- `functionName`, the function name at which the thread is
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stopped, undefined if event is not `THREAD_STOPPED`
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- `fileName`, the file name at which the thread is stopped,
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undefined if event is not `THREAD_STOPPED`
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- `lineNumber`, the line number at which the thread is stopped,
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undefined if event is not `THREAD_STOPPED`
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**/
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public static function setEventNotificationHandler(handler:(threadNumber:Int, event:Int, stackFrame:Int, className:String, functionName:String,
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fileName:String, lineNumber:Int) -> Void) {
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untyped __global__.__hxcpp_dbg_setEventNotificationHandler(handler);
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}
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/**
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This can be called to turn off (and then back on) all stopping of
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debugged threads temporarily. It should only be used by classes that
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actually implement the debugger to hide themselves from the debugger as
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necessary.
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**/
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public static function enableCurrentThreadDebugging(enabled:Bool) {
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untyped __global__.__hxcpp_dbg_enableCurrentThreadDebugging(enabled);
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}
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/**
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Returns the thread number of the calling thread.
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@return the thread number of the calling thread.
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**/
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public static function getCurrentThreadNumber():Int {
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return untyped __global__.__hxcpp_dbg_getCurrentThreadNumber();
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}
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/**
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Returns the set of source files known to the debugger. This is a copy
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of the original array and could be quite large. The caller should
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cache this value to avoid multiple copies needing to be made.
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@return the set of source files known to the debugger.
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**/
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public static function getFiles():Array<String> {
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return untyped __global__.__hxcpp_dbg_getFiles();
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}
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/**
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Returns the full paths of the set of source files known to the debugger.
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This is a copy of the original array and could be quite large.
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It is possible that this set will be empty, in which case the full paths are not known.
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The index of these files matches the index from `getFiles()`, so the full path for
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a given short path can be calculated.
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@return the known full paths of the set of source files
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**/
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public static function getFilesFullPath():Array<String> {
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return untyped __global__.__hxcpp_dbg_getFilesFullPath();
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}
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/**
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Returns the set of class names of all classes known to the debugger.
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This is a copy of the original array and could be quite large. The
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caller should cache this value to avoid multiple copies needing to be
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made.
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@return the set of class names of all classes known to the debugger.
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**/
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public static function getClasses():Array<String> {
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return untyped __global__.__hxcpp_dbg_getClasses();
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}
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/**
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Returns a `ThreadInfo` object describing every thread that existed at the
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moment that the call was made, except for the debugger thread.
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**/
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public static function getThreadInfos():Array<ThreadInfo> {
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return untyped __global__.__hxcpp_dbg_getThreadInfos();
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}
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/**
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Returns a `ThreadInfo` object describing a single thread, or `null` if
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there is no such thread or the thread queried about was the debugger
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thread and `unsafe` was not `true`.
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**/
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public static function getThreadInfo(threadNumber:Int, unsafe:Bool):ThreadInfo {
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return untyped __global__.__hxcpp_dbg_getThreadInfo(threadNumber, unsafe);
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}
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/**
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Adds a new `file:line` breakpoint. The breakpoint number of the newly
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added breakpoint is returned.
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**/
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public static function addFileLineBreakpoint(file:String, line:Int):Int {
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return untyped __global__.__hxcpp_dbg_addFileLineBreakpoint(file, line);
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}
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/**
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Adds a new `class:function` breakpoint. The breakpoint number of the
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newly added breakpoint is returned.
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**/
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public static function addClassFunctionBreakpoint(className:String, functionName:String):Int {
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return untyped __global__.__hxcpp_dbg_addClassFunctionBreakpoint(className, functionName);
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}
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/**
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Deletes a breakpoint, or all breakpoints.
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**/
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public static function deleteBreakpoint(number:Null<Int>) {
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if (number == null) {
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untyped __global__.__hxcpp_dbg_deleteAllBreakpoints();
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} else {
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untyped __global__.__hxcpp_dbg_deleteBreakpoint(cast(number, Int));
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}
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}
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/**
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Breaks all threads except the debugger thread (which should be the same
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as the calling thread!).
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If `wait` is `true`, waits up to 2 seconds for all threads to be broken.
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Threads which are in blocking system calls and cannot break after 2
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seconds remain running when this function returns.
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**/
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public static function breakNow(wait:Bool = true) {
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untyped __global__.__hxcpp_dbg_breakNow(wait);
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}
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/**
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Continue execution of all stopped threads. If `specialThreadNumber`
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is a valid thread number, then it will be continued past
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`continueCount` breakpoints instead of just 1 like all of the other
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threads.
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**/
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public static function continueThreads(specialThreadNumber:Int, continueCount:Int) {
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untyped __global__.__hxcpp_dbg_continueThreads(specialThreadNumber, continueCount);
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}
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/**
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Single steps the given thread.
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**/
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public static function stepThread(threadNumber:Int, stepType:Int, stepCount:Int = 1) {
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untyped __global__.__hxcpp_dbg_stepThread(threadNumber, stepType, stepCount);
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}
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/**
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Returns the list of local variables (including `this`, function
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arguments, and local variables) visible to the given thread at the
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given stack frame.
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Returns a list with a single entry, `THREAD_NOT_STOPPED`, if the
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thread is not stopped and thus variables cannot be fetched and
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`unsafe` is not `true`.
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@return the list of local variables (including `this`, function
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arguments, and local variables) visible to the given thread at
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the given stack frame.
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**/
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public static function getStackVariables(threadNumber:Int, stackFrameNumber:Int, unsafe:Bool):Array<String> {
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return untyped __global__.__hxcpp_dbg_getStackVariables(threadNumber, stackFrameNumber, unsafe, THREAD_NOT_STOPPED);
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}
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/**
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Returns the value of a stack variable, or `NONEXISTENT_VALUE` if the
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requested value does not exist. If the thread is actively running
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and `unsafe` is not `true`, returns `THREAD_NOT_STOPPED`.
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**/
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public static function getStackVariableValue(threadNumber:Int, stackFrameNumber:Int, name:String, unsafe:Bool):Dynamic {
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return untyped __global__.__hxcpp_dbg_getStackVariableValue(threadNumber, stackFrameNumber, name, unsafe, NONEXISTENT_VALUE, THREAD_NOT_STOPPED);
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}
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/**
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Sets the value of a stack variable and returns that value. If the
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variable does not exist, on the stack, this function returns
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`NONEXISTENT_VALUE`. If the thread is actively running and `unsafe` is not
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`true`, returns `THREAD_NOT_STOPPED`, and the value is not set.
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**/
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public static function setStackVariableValue(threadNumber:Int, stackFrameNumber:Int, name:String, value:Dynamic, unsafe:Bool):Dynamic {
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return untyped __global__.__hxcpp_dbg_setStackVariableValue(threadNumber, stackFrameNumber, name, value, unsafe, NONEXISTENT_VALUE,
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THREAD_NOT_STOPPED);
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}
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// The hxcpp runtime calls back through these functions to create Haxe
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// objects as needed, which allows the C++ implementation code to create
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// Haxe objects without having to actually know the structure of those
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// objects
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private static function __init__() {
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untyped __global__.__hxcpp_dbg_setNewParameterFunction(function(name:String, value:Dynamic):Dynamic {
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return new Parameter(name, value);
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});
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untyped __global__.__hxcpp_dbg_setNewStackFrameFunction(function(fileName:String, lineNumber:Int, className:String, functionName:String) {
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return new StackFrame(fileName, lineNumber, className, functionName);
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});
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untyped __global__.__hxcpp_dbg_setNewThreadInfoFunction(function(number:Int, status:Int, breakpoint:Int, criticalErrorDescription:String):Dynamic {
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return new ThreadInfo(number, status, breakpoint, criticalErrorDescription);
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});
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untyped __global__.__hxcpp_dbg_setAddParameterToStackFrameFunction(function(inStackFrame:Dynamic, inParameter:Dynamic) {
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var stackFrame:StackFrame = cast inStackFrame;
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var parameter:Parameter = cast inParameter;
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stackFrame.parameters.push(parameter);
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});
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untyped __global__.__hxcpp_dbg_setAddStackFrameToThreadInfoFunction(function(inThreadInfo:Dynamic, inStackFrame:Dynamic) {
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var threadInfo:ThreadInfo = cast inThreadInfo;
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var stackFrame:StackFrame = cast inStackFrame;
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threadInfo.stack.push(stackFrame);
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});
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}
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}
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