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1
32 package net.sf.retrotranslator.runtime.format;
33
34 import java.math.BigInteger  ;
35
36
39 abstract class NondecimalIntegralConversion extends NumericConversion {
40
41 public void format(FormatContext context) {
42 context.checkWidth();
43 context.assertNoPrecision();
44 context.assertNoFlag(',');
45 context.checkFlags();
46 Object argument = context.getArgument();
47 if (argument instanceof Byte ) {
48 printf(context, (Byte ) argument, Byte.SIZE);
49 } else if (argument instanceof Short ) {
50 printf(context, (Short ) argument, Short.SIZE);
51 } else if (argument instanceof Integer ) {
52 printf(context, (Integer ) argument, Integer.SIZE);
53 } else if (argument instanceof Long ) {
54 printf(context, (Long ) argument, Long.SIZE);
55 } else if (argument instanceof BigInteger ) {
56 printf(context, (BigInteger ) argument);
57 } else if (argument == null) {
58 context.writePadded(String.valueOf(argument));
59 } else {
60 throw context.getConversionException();
61 }
62 }
63
64 private void printf(FormatContext context, long argument, int size) {
65 context.assertNoFlag('(');
66 context.assertNoFlag(' ');
67 context.assertNoFlag('+');
68 long value = argument >= 0 || size == Long.SIZE ? argument : argument + (1L << size);
69 printf(context, false, toUnsignedString(value));
70 }
71
72 private void printf(FormatContext context, BigInteger argument) {
73 printf(context, argument.signum() < 0, toSignedString(argument.abs()));
74 }
75
76 private void printf(FormatContext context, boolean negative, String value) {
77 String prefix = context.isFlag('#') ? getRadixIndicator() : null;
78 printNumber(context, negative, prefix, new StringBuilder (value), context.getSymbols(false));
79 }
80
81 protected abstract String getRadixIndicator();
82
83 protected abstract String toUnsignedString(long value);
84
85 protected abstract String toSignedString(BigInteger value);
86
87 public static class OctalConversion extends NondecimalIntegralConversion {
88
89 protected String getRadixIndicator() {
90 return "0";
91 }
92
93 protected String toUnsignedString(long value) {
94 return Long.toOctalString(value);
95 }
96
97 protected String toSignedString(BigInteger value) {
98 return value.toString(8);
99 }
100 }
101
102 public static class HexadecimalConversion extends NondecimalIntegralConversion {
103
104 protected String getRadixIndicator() {
105 return "0x";
106 }
107
108 protected String toUnsignedString(long value) {
109 return Long.toHexString(value);
110 }
111
112 protected String toSignedString(BigInteger value) {
113 return value.toString(16);
114 }
115 }
116
117 }
118 |
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