How to use printErrors method in green

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fbchisellldbbase.py

Source:fbchisellldbbase.py

1#!/usr/bin/python2# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved3#4# This source code is licensed under the MIT license found in the5# LICENSE file in the root directory of this source tree.6import json7import shlex8import lldb9class FBCommandArgument:  # noqa B90310    def __init__(11        self, short="", long="", arg="", type="", help="", default="", boolean=False12    ):13        self.shortName = short14        self.longName = long15        self.argName = arg16        self.argType = type17        self.help = help18        self.default = default19        self.boolean = boolean20class FBCommand:21    def name(self):22        return None23    def options(self):24        return []25    def args(self):26        return []27    def description(self):28        return ""29    def lex(self, commandLine):30        return shlex.split(commandLine)31    def run(self, arguments, option):32        pass33def isSuccess(error):34    # When evaluating a `void` expression, the returned value will indicate an35    # error. This error is named: kNoResult. This error value does *not* mean36    # there was a problem. This logic follows what the builtin `expression`37    # command does. See: https://git.io/vwpjl (UserExpression.h)38    kNoResult = 0x100139    return error.success or error.value == kNoResult40def importModule(frame, module):41    options = lldb.SBExpressionOptions()42    options.SetLanguage(lldb.eLanguageTypeObjC)43    value = frame.EvaluateExpression("@import " + module, options)44    return isSuccess(value.error)45# evaluates expression in Objective-C++ context, so it will work even for46# Swift projects47def evaluateExpressionValue(48    expression,49    printErrors=True,50    language=lldb.eLanguageTypeObjC_plus_plus,51    tryAllThreads=False,52):53    frame = (54        lldb.debugger.GetSelectedTarget()55        .GetProcess()56        .GetSelectedThread()57        .GetSelectedFrame()58    )59    options = lldb.SBExpressionOptions()60    options.SetLanguage(language)61    # Allow evaluation that contains a @throw/@catch.62    #   By default, ObjC @throw will cause evaluation to be aborted. At the time63    #   of a @throw, it's not known if the exception will be handled by a @catch.64    #   An exception that's caught, should not cause evaluation to fail.65    options.SetTrapExceptions(False)66    # Give evaluation more time.67    options.SetTimeoutInMicroSeconds(5000000)  # 5s68    # Most Chisel commands are not multithreaded.69    options.SetTryAllThreads(tryAllThreads)70    value = frame.EvaluateExpression(expression, options)71    error = value.GetError()72    # Retry if the error could be resolved by first importing UIKit.73    if (74        error.type == lldb.eErrorTypeExpression75        and error.value == lldb.eExpressionParseError76        and importModule(frame, "UIKit")77    ):78        value = frame.EvaluateExpression(expression, options)79        error = value.GetError()80    if printErrors and not isSuccess(error):81        print(error)82    return value83def evaluateInputExpression(expression, printErrors=True):84    # HACK85    if expression.startswith("(id)"):86        return evaluateExpressionValue(expression, printErrors=printErrors).GetValue()87    frame = (88        lldb.debugger.GetSelectedTarget()89        .GetProcess()90        .GetSelectedThread()91        .GetSelectedFrame()92    )93    options = lldb.SBExpressionOptions()94    options.SetTrapExceptions(False)95    value = frame.EvaluateExpression(expression, options)96    error = value.GetError()97    if printErrors and error.Fail():98        print(error)99    return value.GetValue()100def evaluateIntegerExpression(expression, printErrors=True):101    output = evaluateExpression("(int)(" + expression + ")", printErrors).replace(102        "'", ""103    )104    if output.startswith("\\x"):  # Booleans may display as \x01 (Hex)105        output = output[2:]106    elif output.startswith("\\"):  # Or as \0 (Dec)107        output = output[1:]108    return int(output, 0)109def evaluateBooleanExpression(expression, printErrors=True):110    return (111        int(evaluateIntegerExpression("(BOOL)(" + expression + ")", printErrors)) != 0112    )113def evaluateExpression(expression, printErrors=True):114    return evaluateExpressionValue(expression, printErrors=printErrors).GetValue()115def describeObject(expression, printErrors=True):116    return evaluateExpressionValue(117        "(id)(" + expression + ")", printErrors118    ).GetObjectDescription()119def evaluateEffect(expression, printErrors=True):120    evaluateExpressionValue("(void)(" + expression + ")", printErrors=printErrors)121def evaluateObjectExpression(expression, printErrors=True):122    return evaluateExpression("(id)(" + expression + ")", printErrors)123def evaluateCStringExpression(expression, printErrors=True):124    ret = evaluateExpression(expression, printErrors)125    process = lldb.debugger.GetSelectedTarget().GetProcess()126    error = lldb.SBError()127    ret = process.ReadCStringFromMemory(int(ret, 16), 256, error)128    if error.Success():129        return ret130    else:131        if printErrors:132            print(error)133        return None134RETURN_MACRO = """135#define IS_JSON_OBJ(obj)\136    (obj != nil && ((bool)[NSJSONSerialization isValidJSONObject:obj] ||\137    (bool)[obj isKindOfClass:[NSString class]] ||\138    (bool)[obj isKindOfClass:[NSNumber class]]))139#define RETURN(ret) ({\140    if (!IS_JSON_OBJ(ret)) {\141        (void)[NSException raise:@"Invalid RETURN argument" format:@""];\142    }\143    NSDictionary *__dict = @{@"return":ret};\144    NSData *__data = (id)[NSJSONSerialization dataWithJSONObject:__dict options:0 error:NULL];\145    NSString *__str = (id)[[NSString alloc] initWithData:__data encoding:4];\146    (char *)[__str UTF8String];})147#define RETURNCString(ret)\148    ({NSString *___cstring_ret = [NSString stringWithUTF8String:ret];\149    RETURN(___cstring_ret);})150"""151def check_expr(expr):152    return expr.strip().split(";")[-2].find("RETURN") != -1153# evaluate a batch of Objective-C expressions, the last expression154# must contain a RETURN marco and it will automatic transform the155# Objective-C object to Python object156# Example:157#       >>> fbchisellldbbase.evaluate('NSString *str = @"hello world"; RETURN(@{@"key": str});')158#       {u'key': u'hello world'}159def evaluate(expr):160    if not check_expr(expr):161        raise Exception(162            "Invalid Expression, the last expression not include a RETURN family marco"163        )164    command = "({" + RETURN_MACRO + "\n" + expr + "})"165    ret = evaluateExpressionValue(command, printErrors=True)166    if not ret.GetError().Success():167        print(ret.GetError())168        return None169    else:170        process = lldb.debugger.GetSelectedTarget().GetProcess()171        error = lldb.SBError()172        ret = process.ReadCStringFromMemory(int(ret.GetValue(), 16), 2**20, error)173        if not error.Success():174            print(error)175            return None176        else:177            ret = json.loads(ret)178            return ret["return"]179def currentLanguage():180    return (181        lldb.debugger.GetSelectedTarget()182        .GetProcess()183        .GetSelectedThread()184        .GetSelectedFrame()185        .GetCompileUnit()186        .GetLanguage()...

lldbbase.py

Source:lldbbase.py

1#!/usr/bin/env python2# -*- coding: utf-8 -*-3################################################################################4#5# Copyright (c) 2016 Baidu.com, Inc. All Rights Reserved6#7################################################################################8"""9This module provide configure file management service in i18n environment.10Authors: liyingpeng(liyingpeng@baidu.com)11Date:    2016/01/20 17:23:0612"""13import lldb14class CommandArgument:15    def __init__(self, short='', long='', arg='', type='', help='', default='', boolean=False):16        self.shortName = short17        self.longName = long18        self.argName = arg19        self.argType = type20        self.help = help21        self.default = default22        self.boolean = boolean23class Command:24    def name(self):25        return None26    def options(self):27        return []28    def args(self):29        return []30    def description(self):31        return ''32    def run(self, arguments, option):33        pass34def evaluateExpressionValueWithLanguage(expression, language, printErrors):35    # lldb.frame is supposed to contain the right frame, but it doesnt :/ so36    # do the dance37    frame = lldb.debugger.GetSelectedTarget().GetProcess(38    ).GetSelectedThread().GetSelectedFrame()39    expr_options = lldb.SBExpressionOptions()40    # requires lldb r210874 (2014-06-13) / Xcode 641    expr_options.SetLanguage(language)42    value = frame.EvaluateExpression(expression, expr_options)43    if printErrors and value.GetError() is not None and str(value.GetError()) != 'success':44        print value.GetError()45    return value46def evaluateExpressionValueInFrameLanguage(expression, printErrors=True):47        # lldb.frame is supposed to contain the right frame, but it doesnt :/ so48        # do the dance49    frame = lldb.debugger.GetSelectedTarget().GetProcess(50    ).GetSelectedThread().GetSelectedFrame()51    # requires lldb r222189 (2014-11-17)52    language = frame.GetCompileUnit().GetLanguage()53    return evaluateExpressionValueWithLanguage(expression, language, printErrors)54# evaluates expression in Objective-C++ context, so it will work even for55# Swift projects56def evaluateExpressionValue(expression, printErrors=True):57    return evaluateExpressionValueWithLanguage(expression, lldb.eLanguageTypeObjC_plus_plus, printErrors)58def evaluateIntegerExpression(expression, printErrors=True):59    output = evaluateExpression(60        '(int)(' + expression + ')', printErrors).replace('\'', '')61    if output.startswith('\\x'):  # Booleans may display as \x01 (Hex)62        output = output[2:]63    elif output.startswith('\\'):  # Or as \0 (Dec)64        output = output[1:]65    return int(output, 16)66def evaluateBooleanExpression(expression, printErrors=True):67    return (int(evaluateIntegerExpression('(BOOL)(' + expression + ')', printErrors)) != 0)68def evaluateExpression(expression, printErrors=True):69    return evaluateExpressionValue(expression, printErrors).GetValue()70def evaluateObjectExpression(expression, printErrors=True):...

fblldbbase.py

Source:fblldbbase.py

1#!/usr/bin/python2# Copyright (c) 2014, Facebook, Inc.3# All rights reserved.4#5# This source code is licensed under the BSD-style license found in the6# LICENSE file in the root directory of this source tree. An additional grant7# of patent rights can be found in the PATENTS file in the same directory.8import lldb9class FBCommandArgument:10  def __init__(self, short='', long='', arg='', type='', help='', default='', boolean=False):11    self.shortName = short12    self.longName = long13    self.argName = arg14    self.argType = type15    self.help = help16    self.default = default17    self.boolean = boolean18class FBCommand:19  def name(self):20    return None21  def options(self):22    return []23  def args(self):24    return []25  def description(self):26    return ''27  def run(self, arguments, option):28    pass29def evaluateExpressionValue(expression, printErrors = True):30  # lldb.frame is supposed to contain the right frame, but it doesnt :/ so do the dance31  frame = lldb.debugger.GetSelectedTarget().GetProcess().GetSelectedThread().GetSelectedFrame()32  value = frame.EvaluateExpression(expression)33  if printErrors and value.GetError() is not None and str(value.GetError()) != 'success':34    print value.GetError()35  return value36def evaluateIntegerExpression(expression, printErrors = True):37  output = evaluateExpression('(int)(' + expression + ')', printErrors).replace('\'', '')38  if output.startswith('\\x'): # Booleans may display as \x01 (Hex)39    output = output[2:]40  elif output.startswith('\\'): # Or as \0 (Dec)41    output = output[1:]42  return int(output, 16)43def evaluateBooleanExpression(expression, printErrors = True):44  return (int(evaluateIntegerExpression('(BOOL)(' + expression + ')', printErrors)) != 0)45def evaluateExpression(expression, printErrors = True):46  return evaluateExpressionValue(expression, printErrors).GetValue()47def evaluateObjectExpression(expression, printErrors = True):...

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