31
32 /** Allows forward references in bytecode streams emitted by
33 ClassFileAssembler. Assumes that the start of the method body is
34 the first byte in the assembler's buffer. May be used at more than
35 one branch site. */
36
37 class Label {
38 static class PatchInfo {
39 PatchInfo(ClassFileAssembler asm,
40 short instrBCI,
41 short patchBCI,
42 int stackDepth)
43 {
44 this.asm = asm;
45 this.instrBCI = instrBCI;
46 this.patchBCI = patchBCI;
47 this.stackDepth = stackDepth;
48 }
49 // This won't work for more than one assembler anyway, so this is
50 // unnecessary
51 ClassFileAssembler asm;
52 short instrBCI;
53 short patchBCI;
54 int stackDepth;
55 }
56 private List/*<PatchInfo>*/ patches = new ArrayList();
57
58 public Label() {
59 }
60
61 void add(ClassFileAssembler asm,
62 short instrBCI,
63 short patchBCI,
64 int stackDepth)
65 {
66 patches.add(new PatchInfo(asm, instrBCI, patchBCI, stackDepth));
67 }
68
69 public void bind() {
70 for (Iterator iter = patches.iterator(); iter.hasNext(); ) {
71 PatchInfo patch = (PatchInfo) iter.next();
72 short curBCI = patch.asm.getLength();
73 short offset = (short) (curBCI - patch.instrBCI);
74 patch.asm.emitShort(patch.patchBCI, offset);
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31
32 /** Allows forward references in bytecode streams emitted by
33 ClassFileAssembler. Assumes that the start of the method body is
34 the first byte in the assembler's buffer. May be used at more than
35 one branch site. */
36
37 class Label {
38 static class PatchInfo {
39 PatchInfo(ClassFileAssembler asm,
40 short instrBCI,
41 short patchBCI,
42 int stackDepth)
43 {
44 this.asm = asm;
45 this.instrBCI = instrBCI;
46 this.patchBCI = patchBCI;
47 this.stackDepth = stackDepth;
48 }
49 // This won't work for more than one assembler anyway, so this is
50 // unnecessary
51 final ClassFileAssembler asm;
52 final short instrBCI;
53 final short patchBCI;
54 final int stackDepth;
55 }
56 private List/*<PatchInfo>*/ patches = new ArrayList();
57
58 public Label() {
59 }
60
61 void add(ClassFileAssembler asm,
62 short instrBCI,
63 short patchBCI,
64 int stackDepth)
65 {
66 patches.add(new PatchInfo(asm, instrBCI, patchBCI, stackDepth));
67 }
68
69 public void bind() {
70 for (Iterator iter = patches.iterator(); iter.hasNext(); ) {
71 PatchInfo patch = (PatchInfo) iter.next();
72 short curBCI = patch.asm.getLength();
73 short offset = (short) (curBCI - patch.instrBCI);
74 patch.asm.emitShort(patch.patchBCI, offset);
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