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1
4 package gnu.kawa.xml;
5 import gnu.lists.*;
6 import gnu.mapping.*;
7 import gnu.expr.*;
8 import gnu.bytecode.*;
9
10 public class MakeAttribute extends NodeConstructor
11 {
12 public static final MakeAttribute makeAttribute = new MakeAttribute();
13 public static final QuoteExp makeAttributeExp = new QuoteExp(makeAttribute);
14
15 public int numArgs() { return 0xFFFFF001; }
16
17 public static void beginAttribute(Consumer out, Object  type)
18 {
19 out.beginAttribute(type);
20 }
21
22 public void apply (CallContext ctx)
23 {
24 Consumer saved = ctx.consumer;
25 Consumer out = pushNodeContext(ctx);
26 try
27 {
28 Object type = ctx.getNextArg();
29 beginAttribute(out, type);
30 Object endMarker = Special.dfault;
31 for (;;)
32 {
33 Object arg = ctx.getNextArg(endMarker);
34 if (arg == endMarker)
35 break;
36 if (arg instanceof Consumable)
37 ((Consumable) arg).consume(out);
38 else
39 ctx.writeValue(arg);
40 }
41 out.endAttribute();
42 }
43 finally
44 {
45 popNodeContext(saved, ctx);
46 }
47 }
48
49 public void compileToNode (ApplyExp exp, Compilation comp,
50 ConsumerTarget target)
51 {
52 Variable consumer = ((ConsumerTarget) target).getConsumerVariable();
53 Expression[] args = exp.getArgs();
54 int nargs = args.length;
55 CodeAttr code = comp.getCode();
56 code.emitLoad(consumer);
57 code.emitDup();
58 args[0].compile(comp, Target.pushObject);
59 code.emitInvokeStatic(beginAttributeMethod);
61 for (int i = 1; i < nargs; i++)
62 compileChild(args[i], comp, target);
63 code.emitInvokeInterface(endAttributeMethod);
64 }
65
66 static final ClassType typeMakeAttribute
67 = ClassType.make("gnu.kawa.xml.MakeAttribute");
68 static final Method beginAttributeMethod
69 = typeMakeAttribute.getDeclaredMethod("beginAttribute", 2);
70 static final Method endAttributeMethod
71 = Compilation.typeConsumer.getDeclaredMethod("endAttribute", 0);
72
73 public Type getReturnType (Expression[] args)
74 {
75 return Compilation.typeObject;
76 }
77 }
78 |
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