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1
4 package gnu.kawa.xml;
5 import gnu.mapping.*;
6 import gnu.lists.*;
7 import gnu.bytecode.*;
8 import gnu.expr.*;
9 import gnu.xml.TextUtils;
10
11 public class MakeProcInst extends NodeConstructor
12 {
13 public static final MakeProcInst makeProcInst
14 = new MakeProcInst();
15
16 public int numArgs() { return 0x2002; }
17
18 public static void procInst$C (Object  target, Object content, Consumer out)
19 {
20 target = KNode.atomicValue(target);
21 if (! (target instanceof String || target instanceof UntypedAtomic))
22 throw new ClassCastException ("invalid type of processing-instruction target [XPTY0004]");
23
24 if (! (out instanceof XConsumer))
25 return;
26 StringBuffer sbuf = new StringBuffer ();
27 if (content instanceof Values)
28 {
29 Object [] vals = ((Values) content).getValues();
30 for (int i = 0; i < vals.length; i++)
31 {
32 if (i > 0)
33 sbuf.append(' ');
34 TextUtils.stringValue(vals[i], sbuf);
35 }
36 }
37 else
38 TextUtils.stringValue(content, sbuf);
39 int length = sbuf.length();
40 int start = 0;
41 while (start < length && Character.isWhitespace(sbuf.charAt(start)))
42 start++;
43 char[] chars = new char[length-start];
44 sbuf.getChars(start, length, chars, 0);
45 ((XConsumer) out).writeProcessingInstruction(target.toString(),
46 chars, 0, chars.length);
47 }
48
49 public static void procInst$X (Object target, Object content,
50 CallContext ctx)
51 {
52 Consumer saved = ctx.consumer;
53 Consumer out = NodeConstructor.pushNodeContext(ctx);
54 try
55 {
56 procInst$C(target, content, out);
57 }
58 finally
59 {
60 NodeConstructor.popNodeContext(saved, ctx);
61 }
62 }
63
64 public void apply (CallContext ctx)
65 {
66 procInst$X(ctx.getNextArg(null), ctx.getNextArg(null), ctx);
67 }
68
69 public void compileToNode (ApplyExp exp, Compilation comp,
70 ConsumerTarget target)
71 {
72 CodeAttr code = comp.getCode();
73 Expression[] args = exp.getArgs();
74 args[0].compile(comp, Target.pushObject);
75 args[1].compile(comp, Target.pushObject);
76 code.emitLoad(target.getConsumerVariable());
77 code.emitInvokeStatic(ClassType.make("gnu.kawa.xml.MakeProcInst")
78 .getDeclaredMethod("procInst$C", 3));
79 }
80 }
81 |
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