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c24a3edb
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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
提交
c24a3edb
编写于
2月 09, 2020
作者:
S
Skylot
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
fix: inline assignment instruction from same block (#820)
上级
d0f197ea
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
71 addition
and
19 deletion
+71
-19
jadx-core/src/main/java/jadx/core/dex/instructions/args/InsnArg.java
...rc/main/java/jadx/core/dex/instructions/args/InsnArg.java
+12
-5
jadx-core/src/main/java/jadx/core/dex/visitors/shrink/CodeShrinkVisitor.java
...java/jadx/core/dex/visitors/shrink/CodeShrinkVisitor.java
+7
-14
jadx-core/src/test/java/jadx/tests/integration/conditions/TestInnerAssign3.java
...a/jadx/tests/integration/conditions/TestInnerAssign3.java
+22
-0
jadx-core/src/test/smali/conditions/TestInnerAssign3.smali
jadx-core/src/test/smali/conditions/TestInnerAssign3.smali
+30
-0
未找到文件。
jadx-core/src/main/java/jadx/core/dex/instructions/args/InsnArg.java
浏览文件 @
c24a3edb
...
...
@@ -65,6 +65,7 @@ public abstract class InsnArg extends Typed {
}
private
static
InsnWrapArg
wrap
(
InsnNode
insn
)
{
insn
.
add
(
AFlag
.
WRAPPED
);
return
new
InsnWrapArg
(
insn
);
}
...
...
@@ -140,9 +141,17 @@ public abstract class InsnArg extends Typed {
InsnArg
arg
;
InsnType
type
=
insn
.
getType
();
if
(
type
==
InsnType
.
CONST
||
type
==
InsnType
.
MOVE
)
{
arg
=
insn
.
getArg
(
0
);
insn
.
add
(
AFlag
.
REMOVE
);
insn
.
add
(
AFlag
.
DONT_GENERATE
);
if
(
insn
.
contains
(
AFlag
.
FORCE_ASSIGN_INLINE
))
{
RegisterArg
resArg
=
insn
.
getResult
();
arg
=
wrap
(
insn
);
if
(
resArg
!=
null
)
{
arg
.
setType
(
resArg
.
getType
());
}
}
else
{
arg
=
insn
.
getArg
(
0
);
insn
.
add
(
AFlag
.
REMOVE
);
insn
.
add
(
AFlag
.
DONT_GENERATE
);
}
}
else
{
arg
=
wrapArg
(
insn
);
}
...
...
@@ -156,8 +165,6 @@ public abstract class InsnArg extends Typed {
public
static
InsnArg
wrapArg
(
InsnNode
insn
)
{
RegisterArg
resArg
=
insn
.
getResult
();
InsnArg
arg
=
wrap
(
insn
);
insn
.
add
(
AFlag
.
WRAPPED
);
switch
(
insn
.
getType
())
{
case
CONST:
case
MOVE:
...
...
jadx-core/src/main/java/jadx/core/dex/visitors/shrink/CodeShrinkVisitor.java
浏览文件 @
c24a3edb
...
...
@@ -100,10 +100,6 @@ public class CodeShrinkVisitor extends AbstractVisitor {
int
assignPos
=
insnList
.
getIndex
(
assignInsn
);
if
(
assignPos
!=
-
1
)
{
if
(
assignInline
)
{
// TODO?
return
;
}
WrapInfo
wrapInfo
=
argsInfo
.
checkInline
(
assignPos
,
arg
);
if
(
wrapInfo
!=
null
)
{
wrapList
.
add
(
wrapInfo
);
...
...
@@ -123,25 +119,19 @@ public class CodeShrinkVisitor extends AbstractVisitor {
}
}
private
static
void
assignInline
(
MethodNode
mth
,
RegisterArg
arg
,
InsnNode
assignInsn
,
BlockNode
assignBlock
)
{
private
static
boolean
assignInline
(
MethodNode
mth
,
RegisterArg
arg
,
InsnNode
assignInsn
,
BlockNode
assignBlock
)
{
RegisterArg
useArg
=
arg
.
getSVar
().
getUseList
().
get
(
0
);
InsnNode
useInsn
=
useArg
.
getParentInsn
();
if
(
useInsn
==
null
||
useInsn
.
contains
(
AFlag
.
DONT_GENERATE
))
{
return
;
}
InsnArg
replaceArg
;
InsnType
assignInsnType
=
assignInsn
.
getType
();
if
(
assignInsnType
==
InsnType
.
MOVE
||
assignInsnType
==
InsnType
.
CONST
)
{
replaceArg
=
assignInsn
.
getArg
(
0
).
duplicate
();
}
else
{
replaceArg
=
InsnArg
.
wrapArg
(
assignInsn
.
copy
());
return
false
;
}
InsnArg
replaceArg
=
InsnArg
.
wrapInsnIntoArg
(
assignInsn
.
copy
());
useInsn
.
replaceArg
(
useArg
,
replaceArg
);
assignInsn
.
add
(
AFlag
.
REMOVE
);
assignInsn
.
add
(
AFlag
.
DONT_GENERATE
);
InsnRemover
.
remove
(
mth
,
assignBlock
,
assignInsn
);
return
true
;
}
private
static
boolean
inline
(
MethodNode
mth
,
RegisterArg
arg
,
InsnNode
insn
,
BlockNode
block
)
{
...
...
@@ -149,6 +139,9 @@ public class CodeShrinkVisitor extends AbstractVisitor {
if
(
parentInsn
!=
null
&&
parentInsn
.
getType
()
==
InsnType
.
RETURN
)
{
parentInsn
.
setSourceLine
(
insn
.
getSourceLine
());
}
if
(
insn
.
contains
(
AFlag
.
FORCE_ASSIGN_INLINE
))
{
return
assignInline
(
mth
,
arg
,
insn
,
block
);
}
boolean
replaced
=
arg
.
wrapInstruction
(
mth
,
insn
)
!=
null
;
if
(
replaced
)
{
InsnList
.
remove
(
block
,
insn
);
...
...
jadx-core/src/test/java/jadx/tests/integration/conditions/TestInnerAssign3.java
0 → 100644
浏览文件 @
c24a3edb
package
jadx.tests.integration.conditions
;
import
org.junit.jupiter.api.Test
;
import
jadx.tests.api.SmaliTest
;
import
static
jadx
.
tests
.
api
.
utils
.
assertj
.
JadxAssertions
.
assertThat
;
/**
* Issue #820
*/
public
class
TestInnerAssign3
extends
SmaliTest
{
@Test
public
void
test
()
{
disableCompilation
();
assertThat
(
getClassNodeFromSmali
())
.
code
()
.
containsOne
(
"(testMethod = (testClass1 = null).testMethod()) == null"
)
.
containsOne
(
"testClass1.testField != null"
);
}
}
jadx-core/src/test/smali/conditions/TestInnerAssign3.smali
0 → 100644
浏览文件 @
c24a3edb
.class public Lconditions/TestInnerAssign3;
.super LTestSuper;
.source "Test.java"
.method public test()V
.locals 5
const/4 v0, 0
const/4 v1, 0
const/4 v4, 0
if-eqz v4, :cond_0
const/4 v2, 0
invoke-virtual {v2}, LTestClass1;->testMethod()LTestClass2;
move-result-object v0
if-eqz v0, :cond_0
if-eq v1, v0, :cond_0
iget-object v3, v2, LTestClass1;->testField:LTestClass3;
if-eqz v3, :cond_0
:cond_0
return-void
.end method
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