Rhino.Optimizer.Codegen.EmitRegExpInit C# (CSharp) Method

		private void EmitRegExpInit(ClassFileWriter cfw)
		{
			// precompile all regexp literals
			int totalRegCount = 0;
			for (int i = 0; i != scriptOrFnNodes.Length; ++i)
			{
				totalRegCount += scriptOrFnNodes[i].GetRegexpCount();
			}
			if (totalRegCount == 0)
			{
				return;
			}
			cfw.StartMethod(REGEXP_INIT_METHOD_NAME, REGEXP_INIT_METHOD_SIGNATURE, (short)(ClassFileWriter.ACC_STATIC | ClassFileWriter.ACC_PRIVATE));
			cfw.AddField("_reInitDone", "Z", (short)(ClassFileWriter.ACC_STATIC | ClassFileWriter.ACC_PRIVATE | ClassFileWriter.ACC_VOLATILE));
			cfw.Add(ByteCode.GETSTATIC, mainClassName, "_reInitDone", "Z");
			int doInit = cfw.AcquireLabel();
			cfw.Add(ByteCode.IFEQ, doInit);
			cfw.Add(ByteCode.RETURN);
			cfw.MarkLabel(doInit);
			// get regexp proxy and store it in local slot 1
			cfw.AddALoad(0);
			// context
			cfw.AddInvoke(ByteCode.INVOKESTATIC, "org/mozilla/javascript/ScriptRuntime", "checkRegExpProxy", "(Lorg/mozilla/javascript/Context;" + ")Lorg/mozilla/javascript/RegExpProxy;");
			cfw.AddAStore(1);
			// proxy
			// We could apply double-checked locking here but concurrency
			// shouldn't be a problem in practice
			for (int i_1 = 0; i_1 != scriptOrFnNodes.Length; ++i_1)
			{
				ScriptNode n = scriptOrFnNodes[i_1];
				int regCount = n.GetRegexpCount();
				for (int j = 0; j != regCount; ++j)
				{
					string reFieldName = GetCompiledRegexpName(n, j);
					string reFieldType = "Ljava/lang/Object;";
					string reString = n.GetRegexpString(j);
					string reFlags = n.GetRegexpFlags(j);
					cfw.AddField(reFieldName, reFieldType, (short)(ClassFileWriter.ACC_STATIC | ClassFileWriter.ACC_PRIVATE));
					cfw.AddALoad(1);
					// proxy
					cfw.AddALoad(0);
					// context
					cfw.AddPush(reString);
					if (reFlags == null)
					{
						cfw.Add(ByteCode.ACONST_NULL);
					}
					else
					{
						cfw.AddPush(reFlags);
					}
					cfw.AddInvoke(ByteCode.INVOKEINTERFACE, "org/mozilla/javascript/RegExpProxy", "compileRegExp", "(Lorg/mozilla/javascript/Context;" + "Ljava/lang/String;Ljava/lang/String;" + ")Ljava/lang/Object;");
					cfw.Add(ByteCode.PUTSTATIC, mainClassName, reFieldName, reFieldType);
				}
			}
			cfw.AddPush(1);
			cfw.Add(ByteCode.PUTSTATIC, mainClassName, "_reInitDone", "Z");
			cfw.Add(ByteCode.RETURN);
			cfw.StopMethod((short)2);
		}