C++ Tokeniser::getnextcheck方法代码示例

ConfigRect ConfigManager::parseRect(){
    ConfigRect r;
    r.x = tok.getnextint(); // either just x,y..
    tok.getnextcheck(T_COMMA);
    r.y = tok.getnextint();
    if(tok.getnext()==T_COMMA){ // or x,y,w,h
        r.w = tok.getnextint();
        tok.getnextcheck(T_COMMA);
        r.h = tok.getnextint();
    }else{
        tok.rewind();
        r.w = 1; r.h = 1;
    }
    if(tok.getnext() == T_SIZE){
        r.minsizex = tok.getnextint();
        if(tok.getnext()==T_COMMA){
            r.minsizey = tok.getnextint();
        }else{
            r.minsizey = r.minsizex;
            tok.rewind();
        }
    }else
          tok.rewind();
    return r;
}

static void parseAVar(bool diamond){
    // it's a valid type
    char buf[256];
    bool autoRange=false;
    float mn=0,mx=0;
    int size;
    RawDataBuffer *b;
    tok.getnextident(buf); // get name
    
    // if diamond, get topic and datum index
    char tname[256];
    int idx;
#if DIAMOND
    if(diamond){
        tok.getnextcheck(T_TOPIC);
        tok.getnextident(tname);
        tok.getnextcheck(T_COMMA);
        idx = tok.getnextint();
        diamondMap[DiamondTopicKey(tname,idx)]=QString(buf);
        diamondapparatus::subscribe(tname);
        if(!diamondSet.contains(tname))
            diamondSet.insert(tname);
    }
#endif    
    size = tok.getnextint(); // and size
    // now get the range
    tok.getnextcheck(T_RANGE);
    switch(tok.getnext()){
    case T_INT:
    case T_FLOAT:
        mn = tok.getfloat();
        tok.getnextcheck(T_TO);
        mx = tok.getnextfloat();
        break;
    case T_AUTO:
        autoRange=true;
        break;
    default:
        throw UnexpException(&tok,"number or 'auto'");
        break;
    }
    b=createVar(T_NAMEFLOAT,buf,size,mn,mx);
    if(autoRange)
        ((DataBuffer<float>*)b)->setAutoRange();
}

DataBuffer<float> *ConfigManager::parseFloatSource(){
    
    DataBuffer<float> *b;
    char buf[256];
    
    switch(tok.getnext()){
    case T_VAR:
        tok.getnextident(buf);
        b = DataManager::findFloatBuffer(buf);
        if(!b)
            throw ParseException(&tok).set("undefined variable '%s'",buf);
        break;
    case T_EXPR:
        tok.getnextstring(buf);
        // OK, we're going to lose a reference to this, but such is life.
        // In this version we never delete expressions anyway.
        try {
            b = (new Expression(buf))->buffer;
        } catch(Exception& e){
            throw Exception(e,tok.getline());
        }
        // now parse the extra bits
        tok.getnextcheck(T_RANGE);
        float mn,mx;
        switch(tok.getnext()){
        case T_INT:
        case T_FLOAT:
            mn = tok.getfloat();
            tok.getnextcheck(T_TO);
            mx = tok.getnextfloat();
            b->setMinMax(mn,mx);
            break;
        case T_AUTO:
            b->setAutoRange();
            break;
        default:
            throw UnexpException(&tok,"expected number or 'auto'");
        }
        break;
    default:
        throw UnexpException(&tok,"'var' or 'expr'");
    }
    return b;
}

static void parseWaypoint(){
    tok.getnextcheck(T_OCURLY);
    
    wpResetDefinitions();
    
    for(;;){
        char buf[256];
        tok.getnextcheck(T_IDENT);
        strcpy(buf,tok.getstring());
        wpAddField(buf,tok.getnextfloat());
        int t = tok.getnext();
        if(t==T_CCURLY)
            break;
        else if(t!=T_COMMA)
            throw UnexpException(&tok,"comma or '}'");
    }
    
    
}

static void parseVars(){
    tok.getnextcheck(T_OCURLY);
    for(;;){
        int t = tok.getnext();
        switch(t){
        case T_DIAMOND:
            // diamond variables
#if !DIAMOND
            throw ParseException(&tok,"diamond not supported in this build");
#else
            if(!diamondapparatus::isRunning()){
                diamondapparatus::init();
            }
            switch(t=tok.getnext()){
            case T_NAMEFLOAT:
                parseAVar(true);
                break;
            case T_LINKED:
                parseLinkedVars(true);
                break;
            default:
                throw UnexpException(&tok,"'float' or 'linked'");
                break;
            }
#endif
            break;
        case T_NAMEFLOAT:
            parseAVar(false);
            break;
        case T_BOOL:
            throw ParseException(&tok,"bools not currently supported");
            break;
        case T_LINKED:
            parseLinkedVars(false);
            break;
        case T_CCURLY:
            return;
        default:printf("%d\n",tok.getcurrent());
            throw UnexpException(&tok);
        }
    }
}

static void parseWindow(){
    // option defaults
    bool fullScreen = false; // should it be fullscreen?
    bool disabled = false;
    // what size? (default is fit around widgets. Ignored for fullscreen.)
    int width=-1,height=-1; 
    // if set, move the window to a screen of the given dimensions
    int swidth=-1,sheight=-1;
    // title if any
    char title[256];
    // "tab" number - used to generate a shortcut to pull this window
    // to the front
    int number=-1;
    
    title[0]=0;
    int screensetline=-1;
    
    // set this window to not inverse
    ConfigManager::inverse=false;
    
    // get window options
    bool done = false;
    while(!done){
        switch(tok.getnext()){
        case T_OCURLY:
            done = true;
            break;
        case T_TITLE:
            tok.getnextstring(title);
            break;
        case T_NUMBER:
            number = tok.getnextint();
            break;
        case T_INVERSE:
            ConfigManager::inverse=true;
            break;
        case T_FULLSCREEN:
            fullScreen = true;
            break;
        case T_SIZE: // size of window if not fullscreen
            width = tok.getnextint();
            tok.getnextcheck(T_COMMA);
            height = tok.getnextint();
            break;
        case T_SCREEN: // move to a screen of given dimensions
            swidth = tok.getnextint();
            tok.getnextcheck(T_COMMA);
            screensetline = tok.getline();
            sheight = tok.getnextint();
            break;
        case T_DISABLE: // the window is disabled and should be immediately closed
            disabled=true;
            break;
        }
    }
    
    // create a window
    Window *w = getApp()->createWindow();
    if(number>=0)
        getApp()->setWindowKey(number,w);
    ConfigManager::setStyle(w);
    // and parse the contents
    parseContainer(w->centralWidget());
    
    if(*title){
        w->setWindowTitle(title);
    }
    
    // move the window if we want to
    if(swidth>0){
        QDesktopWidget *dt = QApplication::desktop();
        QRect r;
        int i;
        for(i=0;i<dt->screenCount();i++){
            r = dt->screenGeometry(i);
            printf("Found display : %d x %d\n",r.width(),r.height());
            if(r.width() == swidth && r.height()==sheight)
                break;
        }
        if(i==dt->screenCount())
            throw Exception(screensetline).set("could not find display of %d x %d",swidth,sheight);
        w->move(r.topLeft());
    }
    
    
    // finally show the window and resize if required
    if(disabled){
        w->hide(); // marked "disabled" in the config
    } else {
        w->setWindowState(Qt::WindowActive);
        w->raise();
        w->activateWindow();
        if(fullScreen){
            w->showFullScreen();
        } else {
            if(width>0)
                w->resize(width,height);
            w->showNormal();
        }
    }
//.........这里部分代码省略.........

void parseLinkedVars(bool diamond){
    char buf[256];
    int size,type;
    RawDataBuffer *linkvar,*b;
    if(tok.getnext()!=T_OPREN)
        throw UnexpException(&tok,"( after linked");
    linkedVars.clear();
    for(;;){
        double mn,mx;
        char buf[256];
        // get type
        type = tok.getnext();
        // get name
        tok.getnextident(buf);
        // if diamond, get topic and datum index
        char tname[256];
        int idx;
#if DIAMOND
        if(diamond){
            tok.getnextcheck(T_TOPIC);
            tok.getnextident(tname);
            tok.getnextcheck(T_COMMA);
            idx = tok.getnextint();
            diamondMap[DiamondTopicKey(tname,idx)]=QString(buf);
            if(!diamondSet.contains(tname))
                diamondSet.insert(tname);
            diamondapparatus::subscribe(tname);
        }
#endif
        // now the range
        tok.getnextcheck(T_RANGE);
        mn = tok.getnextfloat();
        tok.getnextcheck(T_TO);
        mx = tok.getnextfloat();
        
        // add to a list!
        linkedVars.append(LinkedVarEntry(buf,type,mn,mx));
        if(tok.getnext()!=T_COMMA){
            tok.rewind();
            break;
        }
    }
    if(tok.getnext()!=T_CPREN)
        throw UnexpException(&tok,") after linked var list");
    if(tok.getnext()!=T_INT)
        throw UnexpException(&tok,"buffer size after linked var list");
    size = tok.getint();
    
    linkvar = NULL;
    for(int i=0;i<linkedVars.size();i++){
        b = createVar(linkedVars[i].type,
                      linkedVars[i].name,
                      size,
                      linkedVars[i].minVal,
                      linkedVars[i].maxVal);
        if(linkvar)
            linkvar->link(b);
        else
            linkvar = b;
    }
}