[webkit-help] questions about Tokenizer's dynamic binding issue

[Tony Wang]

Hi guys,

As in WebKit-r60027\WebCore\loader\DocumentWriter.cpp Line 131: void
DocumentWriter::addData(const char* str, int len, bool flush) function:
#################
...
Tokenizer* tokenizer = m_frame->document()->tokenizer();
    if (tokenizer && tokenizer->wantsRawData()) {
        if (len > 0)
            tokenizer->writeRawData(str, len);
        return;
    }
...
#################

Here how the base class pointer tokenizer resolved to calling
class Tokenizer children's writeRawData function, for example: just
calling PluginTokenizer::writeRawData but not
the MediaTokenizer::writeRawData one.

Where does the program make tokenizer to point to the PluginTokenizer
object?

Thanks,

-- 
Tony Weng
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