Method CompileSwitchStatement

sdk/angelscript/source/as_compiler.cpp:4413–4726

}

void asCCompiler::CompileSwitchStatement(asCScriptNode *snode, bool *hasReturn, asCByteCode *bc)
{
	*hasReturn = false;

	// TODO: inheritance: Must guarantee that all options in the switch case call a constructor, or that none call it.

	// Reserve label for break statements
	int breakLabel = nextLabel++;
	breakLabels.PushLast(breakLabel);

	// Add a variable scope that will be used by CompileBreak
	// to know where to stop deallocating variables
	AddVariableScope(true, false);

	//---------------------------
	// Compile the switch expression
	//-------------------------------

	// Compile the switch expression
	asCExprContext expr(engine);
	CompileAssignment(snode->firstChild, &expr);

	// Verify that the expression is a primitive type
	if( !expr.type.dataType.IsIntegerType() && !expr.type.dataType.IsUnsignedType() )
	{
		Error(TXT_SWITCH_MUST_BE_INTEGRAL, snode->firstChild);
		return;
	}

	if( ProcessPropertyGetAccessor(&expr, snode) < 0 )
		return;

	// TODO: Need to support 64bit integers
	// Convert the expression to a 32bit variable
	asCDataType to;
	if( expr.type.dataType.IsIntegerType() )
		to.SetTokenType(ttInt);
	else if( expr.type.dataType.IsUnsignedType() )
		to.SetTokenType(ttUInt);

	// Make sure the value is in a variable
	if( expr.type.dataType.IsReference() )
		ConvertToVariable(&expr);

	ImplicitConversion(&expr, to, snode->firstChild, asIC_IMPLICIT_CONV, true);

	ConvertToVariable(&expr);
	int offset = expr.type.stackOffset;

	ProcessDeferredParams(&expr);

	//-------------------------------
	// Determine case values and labels
	//--------------------------------

	// Remember the first label so that we can later pass the
	// correct label to each CompileCase()
	int firstCaseLabel = nextLabel;