void FunctionImp::initialCompile(ExecState* newExec)
{
FunctionBodyNode* body = this->body.get();
// Reserve various slots needed for the activation object. We do it only once,
// --- isCompiled() would return true even if debugging state changed
body->reserveSlot(ActivationImp::LengthSlot, false);
body->reserveSlot(ActivationImp::TearOffNeeded, false);
body->reserveSlot(ActivationImp::ScopeLink, false /* will mark via ScopeChain::mark() */);
body->reserveSlot(ActivationImp::FunctionSlot, true);
body->reserveSlot(ActivationImp::ArgumentsObjectSlot, true);
// Create declarations for parameters, and allocate the symbols.
// We always just give them sequential positions, to make passInParameters
// simple (though perhaps wasting memory in the trivial case)
for (size_t i = 0; i < body->numParams(); ++i)
body->addSymbolOverwriteID(i + ActivationImp::NumReservedSlots, body->paramName(i), DontDelete);
body->processDecls(newExec);
body->compile(FunctionCode, newExec->dynamicInterpreter()->debugger() ? Debug : Release);
}
// ECMA 10.1.6
void ActivationImp::setup(ExecState* exec, FunctionImp *function,
const List* arguments, LocalStorageEntry* entries)
{
FunctionBodyNode* body = function->body.get();
size_t total = body->numLocalsAndRegisters();
localStorage = entries;
lengthSlot() = total;
// we can now link ourselves into the scope, which will also fix up our scopeLink().
exec->pushVariableObjectScope(this);
const FunctionBodyNode::SymbolInfo* symInfo = body->getLocalInfo();
// Setup our fields
this->arguments = arguments;
functionSlot() = function;
argumentsObjectSlot() = jsUndefined();
symbolTable = &body->symbolTable();
// Set the mark/don't mark flags and attributes for everything
for (size_t p = 0; p < total; ++p)
entries[p].attributes = symInfo[p].attr;
// Pass in the parameters (ECMA 10.1.3q)
#ifdef KJS_VERBOSE
fprintf(stderr, "%s---------------------------------------------------\n"
"%sprocessing parameters for %s call\n", ind(), ind(),
function->functionName().isEmpty() ? "(internal)" : function->functionName().ascii());
#endif
size_t numParams = body->numParams();
size_t numPassedIn = min(numParams, static_cast<size_t>(arguments->size()));
size_t pos = 0;
for (; pos < numPassedIn; ++pos) {
size_t symNum = pos + ActivationImp::NumReservedSlots;
JSValue* v = arguments->atUnchecked(pos);
entries[symNum].val.valueVal = v;
#ifdef KJS_VERBOSE
fprintf(stderr, "%s setting parameter %s", ind(), body->paramName(pos).ascii());
printInfo(exec, "to", v);
#endif
}
for (; pos < numParams; ++pos) {
size_t symNum = pos + ActivationImp::NumReservedSlots;
entries[symNum].val.valueVal = jsUndefined();
#ifdef KJS_VERBOSE
fprintf(stderr, "%s setting parameter %s to undefined (not passed in)", ind(), body->paramName(pos).ascii());
#endif
}
#ifdef KJS_VERBOSE
fprintf(stderr, "\n%s---------------------------------\n", ind());
fprintf(stderr, "%sBody:\n", ind());
fprintf(stderr, "%s---------------------------------\n", ind());
printInd(body->toString().ascii());
fprintf(stderr, "\n%s---------------------------------\n\n", ind());
#endif
// Initialize the rest of the locals to 'undefined'
for (size_t pos = numParams + ActivationImp::NumReservedSlots; pos < total; ++pos)
entries[pos].val.valueVal = jsUndefined();
// Finally, put in the functions. Note that this relies on above
// steps to have completed, since it can trigger a GC.
size_t numFuns = body->numFunctionLocals();
size_t* funsData = body->getFunctionLocalInfo();
for (size_t fun = 0; fun < numFuns; ++fun) {
size_t id = funsData[fun];
entries[id].val.valueVal = symInfo[id].funcDecl->makeFunctionObject(exec);
}
}
