Method run

chapter18/src/main/java/com/seaofnodes/simple/JSViewer.java:31–62

( )

    }

    void run( ) throws Exception {
        SERVER.put("!");
        while( true ) {
            String src = SERVER.get();
            switch( src ) {
            case null: return;
            case "null": return;
            case "+": break;    // Client requests more frames, but we send them all anyway
            default:
                System.out.println(src);
                try {
                    N=0;
                    // Use parser scope, xscope when building views
                    CODE = new CodeGen(src);
                    SHOW = true;
                    show();
                    // Parse program, generating views at every parse point
                    CODE.parse();
                    // No longer user parse internal state when building views
                    CODE.opto();

                    // Catch and ignore Parser errors
                } catch(RuntimeException re) {
                    System.err.println(re);
                } finally {
                    SHOW = false;
                    SERVER.put("#"); // Final frame
                }
                break;
            }
        }
    }

    @Override public void close() throws IOException {
        SERVER.close();