Feature request: set() and clear() accessors return this

Also pre-inlines set() and has() in serialization code. This could
theoretically help ProGuard: the message class size is usually large,
and because of this only, it may refuse to inline an accessor into
the serialization code, and as a result keeps the accessor intact.
Chances are, after pre-inlining all accessor calls within the message
class, those accessors become unused or single-use, so there are more
reasons for ProGuard to inline and then remove them.

Change-Id: I57decbe0b2533c1be21439de0aad15f49c7024dd
This commit is contained in:
Max Cai 2013-10-16 16:26:50 +01:00
parent 1004093828
commit fba329d6d5
4 changed files with 33 additions and 17 deletions

View File

@ -2322,6 +2322,12 @@ public class NanoTest extends TestCase {
assertFalse(msg.hasOptionalString());
assertFalse(msg.hasDefaultString());
assertFalse(msg.hasBitFieldCheck());
// Test set() and clear() returns itself (compiles = success)
msg.clear()
.setOptionalInt32(3)
.clearDefaultBytes()
.setOptionalString("4");
}
public void testNanoWithAccessorsParseFrom() throws Exception {

View File

@ -182,16 +182,18 @@ GenerateMembers(io::Printer* printer) const {
"public int get$capitalized_name$() {\n"
" return $name$_;\n"
"}\n"
"public void set$capitalized_name$(int value) {\n"
"public $message_name$ set$capitalized_name$(int value) {\n"
" $name$_ = value;\n"
" $set_has$;\n"
" return this;\n"
"}\n"
"public boolean has$capitalized_name$() {\n"
" return $get_has$;\n"
"}\n"
"public void clear$capitalized_name$() {\n"
"public $message_name$ clear$capitalized_name$() {\n"
" $name$_ = $default$;\n"
" $clear_has$;\n"
" return this;\n"
"}\n");
}
@ -204,13 +206,14 @@ GenerateClearCode(io::Printer* printer) const {
void AccessorEnumFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
printer->Print(variables_,
"set$capitalized_name$(input.readInt32());\n");
"$name$_ = input.readInt32();\n"
"$set_has$;\n");
}
void AccessorEnumFieldGenerator::
GenerateSerializationCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($get_has$) {\n"
" output.writeInt32($number$, $name$_);\n"
"}\n");
}
@ -218,7 +221,7 @@ GenerateSerializationCode(io::Printer* printer) const {
void AccessorEnumFieldGenerator::
GenerateSerializedSizeCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($get_has$) {\n"
" size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
" .computeInt32Size($number$, $name$_);\n"
"}\n");

View File

@ -148,17 +148,19 @@ GenerateMembers(io::Printer* printer) const {
"public $type$ get$capitalized_name$() {\n"
" return $name$_;\n"
"}\n"
"public void set$capitalized_name$($type$ value) {\n"
"public $message_name$ set$capitalized_name$($type$ value) {\n"
" if (value == null) {\n"
" throw new java.lang.NullPointerException();\n"
" }\n"
" $name$_ = value;\n"
" return this;\n"
"}\n"
"public boolean has$capitalized_name$() {\n"
" return $name$_ != null;\n"
"}\n"
"public void clear$capitalized_name$() {\n"
"public $message_name$ clear$capitalized_name$() {\n"
" $name$_ = null;\n"
" return this;"
"}\n");
}
@ -171,8 +173,8 @@ GenerateClearCode(io::Printer* printer) const {
void AccessorMessageFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
printer->Print(variables_,
"if (!has$capitalized_name$()) {\n"
" set$capitalized_name$(new $type$());\n"
"if ($name$_ == null) {\n"
" $name$_ = new $type$();\n"
"}\n");
if (descriptor_->type() == FieldDescriptor::TYPE_GROUP) {
@ -187,7 +189,7 @@ GenerateMergingCode(io::Printer* printer) const {
void AccessorMessageFieldGenerator::
GenerateSerializationCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($name$_ != null) {\n"
" output.write$group_or_message$($number$, $name$_);\n"
"}\n");
}
@ -195,7 +197,7 @@ GenerateSerializationCode(io::Printer* printer) const {
void AccessorMessageFieldGenerator::
GenerateSerializedSizeCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($name$_ != null) {\n"
" size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
" .compute$group_or_message$Size($number$, $name$_);\n"
"}\n");

View File

@ -431,21 +431,25 @@ GenerateMembers(io::Printer* printer) const {
"public $type$ get$capitalized_name$() {\n"
" return $name$_;\n"
"}\n"
"public void set$capitalized_name$($type$ value) {\n");
"public $message_name$ set$capitalized_name$($type$ value) {\n");
if (IsReferenceType(GetJavaType(descriptor_))) {
printer->Print(variables_,
" if (value == null) throw new java.lang.NullPointerException();\n");
" if (value == null) {\n"
" throw new java.lang.NullPointerException();\n"
" }\n");
}
printer->Print(variables_,
" $name$_ = value;\n"
" $set_has$;\n"
" return this;\n"
"}\n"
"public boolean has$capitalized_name$() {\n"
" return $get_has$;\n"
"}\n"
"public void clear$capitalized_name$() {\n"
"public $message_name$ clear$capitalized_name$() {\n"
" $name$_ = $default_copy_if_needed$;\n"
" $clear_has$;\n"
" return this;\n"
"}\n");
}
@ -458,13 +462,14 @@ GenerateClearCode(io::Printer* printer) const {
void AccessorPrimitiveFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
printer->Print(variables_,
"set$capitalized_name$(input.read$capitalized_type$());\n");
"$name$_ = input.read$capitalized_type$();\n"
"$set_has$;\n");
}
void AccessorPrimitiveFieldGenerator::
GenerateSerializationCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($get_has$) {\n"
" output.write$capitalized_type$($number$, $name$_);\n"
"}\n");
}
@ -472,7 +477,7 @@ GenerateSerializationCode(io::Printer* printer) const {
void AccessorPrimitiveFieldGenerator::
GenerateSerializedSizeCode(io::Printer* printer) const {
printer->Print(variables_,
"if (has$capitalized_name$()) {\n"
"if ($get_has$) {\n"
" size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
" .compute$capitalized_type$Size($number$, $name$_);\n"
"}\n");