value.cpp

来自「一个语言识别引擎」· C++ 代码 · 共 96 行

// -*- mode:C++; tab-width:4; c-basic-offset:4; indent-tabs-mode:nil -*-

/*
 * Copyright (C) 2006 Paul Fitzpatrick
 * CopyPolicy: Released under the terms of the GNU GPL v2.0.
 *
 */


#include <yarp/BottleImpl.h>
#include <yarp/Logger.h>
#include <yarp/os/Bottle.h>
#include <yarp/os/Value.h>

using namespace yarp::os;
using namespace yarp;

Value *Value::makeInt(int x) {
    return new StoreInt(x);
}


Value *Value::makeDouble(double x) {
    return new StoreDouble(x);
}


Value *Value::makeString(const char *str) {
    return new StoreString(str);
}


Value *Value::makeVocab(int v) {
    return new StoreVocab(v);
}


Value *Value::makeVocab(const char *str) {
    return new StoreVocab(Vocab::encode(str));
}


Value *Value::makeBlob(void *data, int length) {
    String s;
    s.set((char*)data,length,0);
    return new StoreBlob(s);
}


Value *Value::makeList() {
    return new StoreList();
}


Value *Value::makeValue(const char *txt) {
    Bottle bot(txt);
    return bot.get(0).clone();
}


Value& Value::getNullValue() {
    return BottleImpl::getNull();
}


void Value::setProxy(Value *proxy) {
    if (this->proxy!=NULL) { 
        delete this->proxy;
        this->proxy = NULL;
    }
    YARP_ASSERT(proxy!=NULL);
    this->proxy = proxy;
}


void Value::ok() const {
    const Value *op = this;
    if (proxy==NULL) {
        ((Value*)op)->setProxy(makeList());
    }
}


Value::Value(const Value& alt) {
    proxy = 0;
    setProxy(alt.clone());
}


const Value& Value::operator = (const Value& alt) {
    setProxy(alt.clone());
    return *this;
}