没有匹配“运算符”>>'在“本地”中

发布于 2024-11-19 01:59:00 字数 1285 浏览 2 评论 0原文

此函数阻止 Wagic：自制程序编译：

/home/white/Pandora/wagic-read-only/projects/mtg/src/GameOptions.cpp:1156: error: 与“operator>>”不匹配在的 >>本地'

源（GameOptions.cpp）：http:// /code.google.com/p/wagic/source/browse/trunk/projects/mtg/src/ GameOptions.cpp 来源（一般）： http://code.google.com/p/wagic/source/browse/

（第 1142-1172 行）

    bool GameOptionKeyBindings::read(string input)
{
istringstream iss(input);
vector<pair<LocalKeySym, JButton> > assoc;

while (iss.good())
{
    stringstream s;
    iss.get(*(s.rdbuf()), ',');
    iss.get();

    LocalKeySym local;
    char sep;
    u32 button;
    s >> local >> sep >> button; 
    if (':' != sep)
        return false;
    assoc.push_back(make_pair(local, u32_to_button(button)));
}

if (assoc.empty())
    return false;

JGE* j = JGE::GetInstance();

j->ClearBindings();
for (vector<pair<LocalKeySym, JButton> >::const_iterator it = assoc.begin(); it != assoc.end(); ++it)
    j->BindKey(it->first, it->second);

return true;
}

我将如何重写它以使其能够编译？

原文

This function is preventing Wagic: the homebrew from Compiling:

/home/white/Pandora/wagic-read-only/projects/mtg/src/GameOptions.cpp:1156: error: no match for ‘operator>>’ in ‘s >> local’

Source(GameOptions.cpp): http://code.google.com/p/wagic/source/browse/trunk/projects/mtg/src/ GameOptions.cpp
Source(General):
http://code.google.com/p/wagic/source/browse/

(Line 1142-1172)

    bool GameOptionKeyBindings::read(string input)
{
istringstream iss(input);
vector<pair<LocalKeySym, JButton> > assoc;

while (iss.good())
{
    stringstream s;
    iss.get(*(s.rdbuf()), ',');
    iss.get();

    LocalKeySym local;
    char sep;
    u32 button;
    s >> local >> sep >> button; 
    if (':' != sep)
        return false;
    assoc.push_back(make_pair(local, u32_to_button(button)));
}

if (assoc.empty())
    return false;

JGE* j = JGE::GetInstance();

j->ClearBindings();
for (vector<pair<LocalKeySym, JButton> >::const_iterator it = assoc.begin(); it != assoc.end(); ++it)
    j->BindKey(it->first, it->second);

return true;
}

How would I rewrite this to get it to compile?

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断肠人 2024-11-26 01:59:01

s >> local

调用默认的operator>>，它不理解您的自定义类LocalKeySym，因此您需要为您的重载Operator>>自定义类LocalKeySym。

示例代码：

std::istream& operator>>(std::istream& is, LocalKeySym& obj) 
{ 
  // read LocalKeySym obj from stream 

  if( /* no valid object of LocalKeySym found in stream */ )
       is.setstate(std::ios::failbit);

  return is;
}

s >> local

Calls the default operator >> which does not understand your custom class LocalKeySym So You need to Overload the Operator >> for your custom class LocalKeySym.

An sample code:

std::istream& operator>>(std::istream& is, LocalKeySym& obj) 
{ 
  // read LocalKeySym obj from stream 

  if( /* no valid object of LocalKeySym found in stream */ )
       is.setstate(std::ios::failbit);

  return is;
}

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