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Code Issues 7 Pull Requests Releases Activity

Fixed narrowing cast from 'int' to 'Byte' / 'Short'

Browse Source
master
Dmitry Cherniachenko 7 years ago committed by Egor.Ushakov
parent 5db9ad29c8
commit aa78b7df28
7 changed files with 472 additions and 233 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 17
      src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java
  2. 14
      src/org/jetbrains/java/decompiler/modules/decompiler/exps/InvocationExprent.java
  3. 2
      src/org/jetbrains/java/decompiler/modules/decompiler/exps/NewExprent.java
  4. 2
      src/org/jetbrains/java/decompiler/struct/gen/VarType.java
  5. BIN
      testData/classes/pkg/TestPrimitives.class
  6. 601
      testData/results/TestPrimitives.dec
  7. 69
      testData/src/pkg/TestPrimitives.java

17
src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java
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@ -877,10 +877,20 @@ public class ExprProcessor implements CodeConstants {
castAlways ||
(!leftType.isSuperset(rightType) && (rightType.equals(VarType.VARTYPE_OBJECT) || leftType.type != CodeConstants.TYPE_OBJECT)) ||
(castNull && rightType.type == CodeConstants.TYPE_NULL && !UNDEFINED_TYPE_STRING.equals(getTypeName(leftType))) ||
(castNarrowing && isIntConstant(exprent) && VarType.VARTYPE_INT.isStrictSuperset(leftType));
(castNarrowing && isIntConstant(exprent) && isNarrowedIntType(leftType));
boolean quote = cast && exprent.getPrecedence() >= FunctionExprent.getPrecedence(FunctionExprent.FUNCTION_CAST);
// cast instead to 'byte' / 'short' when int constant is used as a value for 'Byte' / 'Short'
if (castNarrowing && exprent.type == Exprent.EXPRENT_CONST) {
if (leftType.equals(VarType.VARTYPE_BYTE_OBJ)) {
leftType = VarType.VARTYPE_BYTE;
}
else if (leftType.equals(VarType.VARTYPE_SHORT_OBJ)) {
leftType = VarType.VARTYPE_SHORT;
}
}
if (cast) buffer.append('(').append(getCastTypeName(leftType)).append(')');
if (quote) buffer.append('(');
@ -910,4 +920,9 @@ public class ExprProcessor implements CodeConstants {
return false;
}
private static boolean isNarrowedIntType(VarType type) {
return VarType.VARTYPE_INT.isStrictSuperset(type) ||
type.equals(VarType.VARTYPE_BYTE_OBJ) || type.equals(VarType.VARTYPE_SHORT_OBJ);
}
}

14
src/org/jetbrains/java/decompiler/modules/decompiler/exps/InvocationExprent.java
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@ -360,11 +360,7 @@ public class InvocationExprent extends Exprent {
TextBuffer buff = new TextBuffer();
boolean ambiguous = setAmbiguousParameters.get(i);
Exprent param = lstParameters.get(i);
// "unbox" invocation parameters, e.g. 'byteSet.add((byte)123)' or 'new ShortContainer((short)813)'
if (param.type == Exprent.EXPRENT_INVOCATION && ((InvocationExprent)param).isBoxingCall()) {
param = ((InvocationExprent)param).lstParameters.get(0);
}
Exprent param = unboxIfNeeded(lstParameters.get(i));
// 'byte' and 'short' literals need an explicit narrowing type cast when used as a parameter
ExprProcessor.getCastedExprent(param, descriptor.params[i], buff, indent, true, ambiguous, true, tracer);
@ -385,6 +381,14 @@ public class InvocationExprent extends Exprent {
return buf;
}
public static Exprent unboxIfNeeded(Exprent param) {
// "unbox" invocation parameters, e.g. 'byteSet.add((byte)123)' or 'new ShortContainer((short)813)'
if (param.type == Exprent.EXPRENT_INVOCATION && ((InvocationExprent)param).isBoxingCall()) {
param = ((InvocationExprent)param).lstParameters.get(0);
}
return param;
}
private boolean isVarArgCall() {
StructClass cl = DecompilerContext.getStructContext().getClass(classname);
if (cl != null) {

2
src/org/jetbrains/java/decompiler/modules/decompiler/exps/NewExprent.java
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@ -326,7 +326,7 @@ public class NewExprent extends Exprent {
boolean firstParam = true;
for (int i = start; i < lstParameters.size(); i++) {
if (sigFields == null || sigFields.get(i) == null) {
Exprent expr = lstParameters.get(i);
Exprent expr = InvocationExprent.unboxIfNeeded(lstParameters.get(i));
VarType leftType = constructor.getDescriptor().params[i];
if (i == lstParameters.size() - 1 && expr.getExprType() == VarType.VARTYPE_NULL) {

2
src/org/jetbrains/java/decompiler/struct/gen/VarType.java
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@ -40,6 +40,8 @@ public class VarType { // TODO: optimize switch
public static final VarType VARTYPE_OBJECT = new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Object");
public static final VarType VARTYPE_INTEGER = new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Integer");
public static final VarType VARTYPE_CHARACTER = new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Character");
public static final VarType VARTYPE_BYTE_OBJ = new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Byte");
public static final VarType VARTYPE_SHORT_OBJ = new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Short");
public static final VarType VARTYPE_VOID = new VarType(CodeConstants.TYPE_VOID);
public final int type;

BIN
testData/classes/pkg/TestPrimitives.class
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Binary file not shown.

601
testData/results/TestPrimitives.dec
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@ -10,87 +10,133 @@ public class TestPrimitives {
this.printFloat(1.23F);// 11
this.printDouble(1.23D);// 12
this.printChar('Z');// 13
this.printIntBoxed(40000);// 15
String.format("%b, %d, %d, %d, %c, %d", true, 1, 213, 40000, 'c', 42L);// 17
System.out.println(String.format("%b, %d, %d, %d", this.getBoolean(), this.getByte(), this.getShort(), this.getInt()));// 18
}// 19
this.printBooleanBoxed(true);// 15
this.printByteBoxed((byte)123);// 16
this.printShortBoxed((short)257);// 17
this.printIntBoxed(1);// 18
this.printIntBoxed(40000);// 19
this.printLongBoxed(123L);// 20
this.printFloatBoxed(1.23F);// 21
this.printDoubleBoxed(1.23D);// 22
this.printCharBoxed('Z');// 23
System.out.printf("%b, %d, %d, %d, %c, %d", true, 1, 213, 40000, 'c', 42L);// 25
System.out.printf("%b, %d, %d, %d", this.getBoolean(), this.getByte(), this.getShort(), this.getInt());// 26
new TestPrimitives(false, (byte)123, (short)257, 40000, 123L, 3.14F, 1.618D, 'A');// 28
new TestPrimitives('A', 1.618D, 3.14F, 123L, 40000, (short)257, (byte)123, false);// 29
}// 30
private TestPrimitives(boolean bool, byte b, short s, int i, long l, float f, double d, char c) {
System.out.printf("%b, %d, %d, %d, %d, %.2f, %.2f, %c", bool, b, s, i, l, f, d, c);// 33
}// 34
private TestPrimitives(Character c, Double d, Float f, Long l, Integer i, Short s, Byte b, Boolean bool) {
System.out.printf("%b, %d, %d, %d, %d, %.2f, %.2f, %c", bool, b, s, i, l, f, d, c);// 37
}// 38
public void printBoolean(boolean b) {
System.out.println(String.format("%b", b));// 22
}// 23
System.out.printf("%b", b);// 41
}// 42
public void printByte(byte b) {
System.out.println(String.format("%d", b));// 26
}// 27
System.out.printf("%d", b);// 45
}// 46
public void printShort(short s) {
System.out.println(String.format("%d", s));// 30
}// 31
System.out.printf("%d", s);// 49
}// 50
public void printInt(int i) {
System.out.println(String.format("%d", i));// 34
}// 35
System.out.printf("%d", i);// 53
}// 54
public void printLong(long l) {
System.out.println(String.format("%d", l));// 38
}// 39
System.out.printf("%d", l);// 57
}// 58
public void printFloat(float f) {
System.out.println(String.format("%f", f));// 42
}// 43
System.out.printf("%f", f);// 61
}// 62
public void printDouble(double d) {
System.out.println(String.format("%f", d));// 46
}// 47
System.out.printf("%f", d);// 65
}// 66
public void printChar(char c) {
System.out.println(String.format("%c", c));// 50
}// 51
System.out.printf("%c", c);// 69
}// 70
public void printBooleanBoxed(Boolean b) {
System.out.printf("%b", b);// 74
}// 75
public void printByteBoxed(Byte b) {
System.out.printf("%d", b);// 78
}// 79
public void printShortBoxed(Short s) {
System.out.printf("%d", s);// 82
}// 83
public void printIntBoxed(Integer i) {
System.out.println(String.format("%d", i));// 55
}// 56
System.out.printf("%d", i);// 86
}// 87
public void printLongBoxed(Long l) {
System.out.printf("%d", l);// 90
}// 91
public void printFloatBoxed(Float f) {
System.out.printf("%f", f);// 94
}// 95
public void printDoubleBoxed(Double d) {
System.out.printf("%f", d);// 98
}// 99
public void printCharBoxed(Character c) {
System.out.printf("%c", c);// 102
}// 103
public boolean getBoolean() {
return false;// 60
return false;// 107
}
public byte getByte() {
return -128;// 64
return -128;// 111
}
public short getShort() {
return -32768;// 68
return -32768;// 115
}
public int getInt() {
return 42;// 72
return 42;// 119
}
public void printNarrowed() {
this.printByte((byte)this.getInt());// 76
this.printShort((short)this.getInt());// 77
}// 78
this.printByte((byte)this.getInt());// 123
this.printShort((short)this.getInt());// 124
}// 125
public void constructor() {
new Byte((byte)1);// 81
}// 82
new Byte((byte)1);// 128
}// 129
private boolean compare(char c) {
boolean res = c > -1;// 85
res = c > 0;// 86
res = c > 1;// 87
res = c > '\b';// 88
res = c > '\t';// 89
res = c > '\n';// 90
res = c > '\f';// 91
res = c > '\r';// 92
res = c > ' ';// 93
res = c > 'a';// 94
res = c > 'Z';// 95
res = c > 127;// 96
res = c > 255;// 97
return res;// 98
boolean res = c > -1;// 132
res = c > 0;// 133
res = c > 1;// 134
res = c > '\b';// 135
res = c > '\t';// 136
res = c > '\n';// 137
res = c > '\f';// 138
res = c > '\r';// 139
res = c > ' ';// 140
res = c > 'a';// 141
res = c > 'Z';// 142
res = c > 127;// 143
res = c > 255;// 144
return res;// 145
}
}
@ -113,191 +159,285 @@ class 'pkg/TestPrimitives' {
2d 11
2f 11
33 12
38 12
37 12
3b 13
44 13
45 13
4b 13
4c 13
52 13
55 13
5b 13
5d 13
63 13
65 13
6b 13
6e 13
72 13
76 14
79 14
82 14
85 14
8c 14
8f 14
96 14
99 14
a0 14
a3 14
a7 14
aa 14
ad 15
40 13
44 14
4a 14
4e 15
52 15
56 16
5b 16
5f 17
65 17
69 18
6e 18
72 19
78 19
7c 20
81 20
84 21
87 21
90 21
91 21
97 21
98 21
9e 21
a1 21
a7 21
a9 21
af 21
b1 21
b7 21
ba 21
be 21
c2 22
c5 22
ce 22
d1 22
d8 22
db 22
e2 22
e5 22
ec 22
ef 22
f3 22
fb 23
fc 23
fe 23
101 23
103 23
106 23
108 23
10b 23
115 24
11a 24
120 24
125 24
12b 24
130 24
136 24
13b 24
143 25
}
method '<init> (ZBSIJFDC)V' {
4 28
7 28
11 28
18 28
1f 28
27 28
2f 28
37 28
40 28
49 28
4d 28
51 29
}
method '<init> (Ljava/lang/Character;Ljava/lang/Double;Ljava/lang/Float;Ljava/lang/Long;Ljava/lang/Integer;Ljava/lang/Short;Ljava/lang/Byte;Ljava/lang/Boolean;)V' {
4 32
7 32
35 32
39 33
}
method 'printBoolean (Z)V' {
0 18
3 18
c 18
10 18
13 18
16 19
0 36
3 36
c 36
10 36
14 37
}
method 'printByte (B)V' {
0 22
3 22
c 22
10 22
13 22
16 23
0 40
3 40
c 40
10 40
14 41
}
method 'printShort (S)V' {
0 26
3 26
c 26
10 26
13 26
16 27
0 44
3 44
c 44
10 44
14 45
}
method 'printInt (I)V' {
0 30
3 30
c 30
10 30
13 30
16 31
0 48
3 48
c 48
10 48
14 49
}
method 'printLong (J)V' {
0 34
3 34
c 34
10 34
13 34
16 35
0 52
3 52
c 52
10 52
14 53
}
method 'printFloat (F)V' {
0 38
3 38
c 38
10 38
13 38
16 39
0 56
3 56
c 56
10 56
14 57
}
method 'printDouble (D)V' {
0 42
3 42
c 42
10 42
13 42
16 43
0 60
3 60
c 60
10 60
14 61
}
method 'printChar (C)V' {
0 46
3 46
c 46
10 46
13 46
16 47
0 64
3 64
c 64
10 64
14 65
}
method 'printBooleanBoxed (Ljava/lang/Boolean;)V' {
0 68
3 68
d 68
11 69
}
method 'printByteBoxed (Ljava/lang/Byte;)V' {
0 72
3 72
d 72
11 73
}
method 'printShortBoxed (Ljava/lang/Short;)V' {
0 76
3 76
d 76
11 77
}
method 'printIntBoxed (Ljava/lang/Integer;)V' {
0 50
3 50
d 50
10 50
13 51
0 80
3 80
d 80
11 81
}
method 'printLongBoxed (Ljava/lang/Long;)V' {
0 84
3 84
d 84
11 85
}
method 'printFloatBoxed (Ljava/lang/Float;)V' {
0 88
3 88
d 88
11 89
}
method 'printDoubleBoxed (Ljava/lang/Double;)V' {
0 92
3 92
d 92
11 93
}
method 'printCharBoxed (Ljava/lang/Character;)V' {
0 96
3 96
d 96
11 97
}
method 'getBoolean ()Z' {
0 54
1 54
0 100
1 100
}
method 'getByte ()B' {
0 58
2 58
0 104
2 104
}
method 'getShort ()S' {
0 62
3 62
0 108
3 108
}
method 'getInt ()I' {
0 66
2 66
0 112
2 112
}
method 'printNarrowed ()V' {
2 70
5 70
6 70
b 71
e 71
f 71
12 72
2 116
5 116
6 116
b 117
e 117
f 117
12 118
}
method 'constructor ()V' {
4 75
9 76
4 121
9 122
}
method 'compare (C)Z' {
1 79
2 79
a 79
c 80
14 80
16 81
17 81
1f 81
21 82
23 82
2b 82
2d 83
2f 83
37 83
39 84
3b 84
43 84
45 85
47 85
4f 85
51 86
53 86
5b 86
5d 87
5f 87
67 87
69 88
6b 88
73 88
75 89
77 89
7f 89
81 90
83 90
8b 90
8d 91
90 91
98 91
9a 92
1 125
2 125
a 125
c 126
14 126
16 127
17 127
1f 127
21 128
23 128
2b 128
2d 129
2f 129
37 129
39 130
3b 130
43 130
45 131
47 131
4f 131
51 132
53 132
5b 132
5d 133
5f 133
67 133
69 134
6b 134
73 134
75 135
77 135
7f 135
81 136
83 136
8b 136
8d 137
90 137
98 137
9a 138
}
}
@ -311,47 +451,78 @@ Lines mapping:
12 <-> 11
13 <-> 12
15 <-> 13
17 <-> 14
18 <-> 15
19 <-> 16
22 <-> 19
23 <-> 20
16 <-> 14
17 <-> 15
18 <-> 16
19 <-> 17
20 <-> 18
21 <-> 19
22 <-> 20
23 <-> 21
25 <-> 22
26 <-> 23
27 <-> 24
30 <-> 27
31 <-> 28
34 <-> 31
35 <-> 32
38 <-> 35
39 <-> 36
42 <-> 39
43 <-> 40
46 <-> 43
47 <-> 44
50 <-> 47
51 <-> 48
55 <-> 51
56 <-> 52
60 <-> 55
64 <-> 59
68 <-> 63
72 <-> 67
76 <-> 71
77 <-> 72
28 <-> 24
29 <-> 25
30 <-> 26
33 <-> 29
34 <-> 30
37 <-> 33
38 <-> 34
41 <-> 37
42 <-> 38
45 <-> 41
46 <-> 42
49 <-> 45
50 <-> 46
53 <-> 49
54 <-> 50
57 <-> 53
58 <-> 54
61 <-> 57
62 <-> 58
65 <-> 61
66 <-> 62
69 <-> 65
70 <-> 66
74 <-> 69
75 <-> 70
78 <-> 73
81 <-> 76
79 <-> 74
82 <-> 77
85 <-> 80
83 <-> 78
86 <-> 81
87 <-> 82
88 <-> 83
89 <-> 84
90 <-> 85
91 <-> 86
92 <-> 87
93 <-> 88
94 <-> 89
95 <-> 90
96 <-> 91
97 <-> 92
98 <-> 93
99 <-> 94
102 <-> 97
103 <-> 98
107 <-> 101
111 <-> 105
115 <-> 109
119 <-> 113
123 <-> 117
124 <-> 118
125 <-> 119
128 <-> 122
129 <-> 123
132 <-> 126
133 <-> 127
134 <-> 128
135 <-> 129
136 <-> 130
137 <-> 131
138 <-> 132
139 <-> 133
140 <-> 134
141 <-> 135
142 <-> 136
143 <-> 137
144 <-> 138
145 <-> 139
Not mapped:
32
36

69
testData/src/pkg/TestPrimitives.java
Unescape View File

@ -12,47 +12,94 @@ public class TestPrimitives {
printDouble(1.23);
printChar('Z');
printBooleanBoxed(true);
printByteBoxed((byte) 123);
printShortBoxed((short) 257);
printIntBoxed(1);
printIntBoxed(40_000);
printLongBoxed(123L);
printFloatBoxed(1.23F);
printDoubleBoxed(1.23);
printCharBoxed('Z');
String.format("%b, %d, %d, %d, %c, %d", true, 1, 213, 40_000, 'c', 42L);
System.out.println(String.format("%b, %d, %d, %d", getBoolean(), getByte(), getShort(), getInt()));
System.out.printf("%b, %d, %d, %d, %c, %d", true, 1, 213, 40_000, 'c', 42L);
System.out.printf("%b, %d, %d, %d", getBoolean(), getByte(), getShort(), getInt());
new TestPrimitives(false, (byte) 123, (short) 257, 40_000, 123L, 3.14f, 1.618, 'A');
new TestPrimitives('A', 1.618, 3.14f, 123L, 40_000, (short) 257, (byte) 123, false);
}
private TestPrimitives(boolean bool, byte b, short s, int i, long l, float f, double d, char c) {
System.out.printf("%b, %d, %d, %d, %d, %.2f, %.2f, %c", bool, b, s, i, l, f, d, c);
}
private TestPrimitives(Character c, Double d, Float f, Long l, Integer i, Short s, Byte b, Boolean bool) {
System.out.printf("%b, %d, %d, %d, %d, %.2f, %.2f, %c", bool, b, s, i, l, f, d, c);
}
public void printBoolean(boolean b) {
System.out.println(String.format("%b", b));
System.out.printf("%b", b);
}
public void printByte(byte b) {
System.out.println(String.format("%d", b));
System.out.printf("%d", b);
}
public void printShort(short s) {
System.out.println(String.format("%d", s));
System.out.printf("%d", s);
}
public void printInt(int i) {
System.out.println(String.format("%d", i));
System.out.printf("%d", i);
}
public void printLong(long l) {
System.out.println(String.format("%d", l));
System.out.printf("%d", l);
}
public void printFloat(float f) {
System.out.println(String.format("%f", f));
System.out.printf("%f", f);
}
public void printDouble(double d) {
System.out.println(String.format("%f", d));
System.out.printf("%f", d);
}
public void printChar(char c) {
System.out.println(String.format("%c", c));
System.out.printf("%c", c);
}
public void printBooleanBoxed(Boolean b) {
System.out.printf("%b", b);
}
public void printByteBoxed(Byte b) {
System.out.printf("%d", b);
}
public void printShortBoxed(Short s) {
System.out.printf("%d", s);
}
public void printIntBoxed(Integer i) {
System.out.println(String.format("%d", i));
System.out.printf("%d", i);
}
public void printLongBoxed(Long l) {
System.out.printf("%d", l);
}
public void printFloatBoxed(Float f) {
System.out.printf("%f", f);
}
public void printDoubleBoxed(Double d) {
System.out.printf("%f", d);
}
public void printCharBoxed(Character c) {
System.out.printf("%c", c);
}

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