GetEnclosingClassCompiler() private method

private GetEnclosingClassCompiler ( ) : Compiler
return Compiler
Esempio n. 1
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        private static void StaticField(Compiler c, bool allowAssignment)
        {
            Instruction loadInstruction = Instruction.LOAD_LOCAL;
            int index = 255;

            Compiler classCompiler = c.GetEnclosingClassCompiler();
            if (classCompiler == null)
            {
                c.Error("Cannot use a static field outside of a class definition.");
            }
            else
            {
                // Look up the name in the scope chain.
                Token token = c._parser.Previous;

                // If this is the first time we've seen this static field, implicitly
                // define it as a variable in the scope surrounding the class definition.
                if (classCompiler.ResolveLocal(c._parser.Source.Substring(token.Start, token.Length), token.Length) == -1)
                {
                    int symbol = classCompiler.DeclareVariable(null);

                    // Implicitly initialize it to null.
                    classCompiler.Emit(Instruction.NULL);
                    classCompiler.DefineVariable(symbol);
                }

                // It definitely exists now, so resolve it properly. This is different from
                // the above resolveLocal() call because we may have already closed over it
                // as an upvalue.
                index = c.ResolveName(c._parser.Source.Substring(token.Start, token.Length), token.Length, out loadInstruction);
            }

            c.Variable(allowAssignment, index, loadInstruction);
        }