CodeBlock::m_numParameters counts a function's expected parameter count. Geoff On May 3, 2010, at 9:21 PM, Nyx wrote:
Is there any way to get the number of parameters a function has declared from a JSFunction object?
I'm asking because I want to get the argument values a function is receiving in an op_call (in the interpreter). I copied this snipper of code for the case where a host function is called:
Register* thisRegister = callFrame->registers() - RegisterFile::CallFrameHeaderSize - argCount; ArgList args(thisRegister + 1, argCount - 1);
The problem is that argCount is the number of arguments passed, and so, if the function takes 5 arguments and 3 are passed, I'm not getting the first 2, only the last 3, two of which show up as "undefined". Hence I believe I would need the number of arguments the function declares takes to properly compute the register offset.
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