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More LIKELY/UNLIKELY in Writer

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This commit is contained in:
Milo Yip 2015-12-31 16:17:52 +08:00
parent bcc3fb6d9e
commit 122c722993
1 changed files with 7 additions and 7 deletions
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14
include/rapidjson/writer.h
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@ -146,7 +146,7 @@ public:
RAPIDJSON_ASSERT(!level_stack_.template Top<Level>()->inArray); RAPIDJSON_ASSERT(!level_stack_.template Top<Level>()->inArray);
level_stack_.template Pop<Level>(1); level_stack_.template Pop<Level>(1);
bool ret = WriteEndObject(); bool ret = WriteEndObject();
if (level_stack_.Empty()) // end of json text if (RAPIDJSON_UNLIKELY(level_stack_.Empty())) // end of json text
os_->Flush(); os_->Flush();
return ret; return ret;
} }
@ -163,7 +163,7 @@ public:
RAPIDJSON_ASSERT(level_stack_.template Top<Level>()->inArray); RAPIDJSON_ASSERT(level_stack_.template Top<Level>()->inArray);
level_stack_.template Pop<Level>(1); level_stack_.template Pop<Level>(1);
bool ret = WriteEndArray(); bool ret = WriteEndArray();
if (level_stack_.Empty()) // end of json text if (RAPIDJSON_UNLIKELY(level_stack_.Empty())) // end of json text
os_->Flush(); os_->Flush();
return ret; return ret;
} }
@ -271,12 +271,12 @@ protected:
PutUnsafe(*os_, '\"'); PutUnsafe(*os_, '\"');
GenericStringStream<SourceEncoding> is(str); GenericStringStream<SourceEncoding> is(str);
while (is.Tell() < length) { while (RAPIDJSON_LIKELY(is.Tell() < length)) {
const Ch c = is.Peek(); const Ch c = is.Peek();
if (!TargetEncoding::supportUnicode && static_cast<unsigned>(c) >= 0x80) { if (!TargetEncoding::supportUnicode && static_cast<unsigned>(c) >= 0x80) {
// Unicode escaping // Unicode escaping
unsigned codepoint; unsigned codepoint;
if (!SourceEncoding::Decode(is, &codepoint)) if (RAPIDJSON_UNLIKELY(!SourceEncoding::Decode(is, &codepoint)))
return false; return false;
PutUnsafe(*os_, '\\'); PutUnsafe(*os_, '\\');
PutUnsafe(*os_, 'u'); PutUnsafe(*os_, 'u');
@ -304,7 +304,7 @@ protected:
PutUnsafe(*os_, hexDigits[(trail ) & 15]); PutUnsafe(*os_, hexDigits[(trail ) & 15]);
} }
} }
else if ((sizeof(Ch) == 1 || static_cast<unsigned>(c) < 256) && escape[static_cast<unsigned char>(c)]) { else if ((sizeof(Ch) == 1 || static_cast<unsigned>(c) < 256) && RAPIDJSON_UNLIKELY(escape[static_cast<unsigned char>(c)])) {
is.Take(); is.Take();
PutUnsafe(*os_, '\\'); PutUnsafe(*os_, '\\');
PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(escape[static_cast<unsigned char>(c)])); PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(escape[static_cast<unsigned char>(c)]));
@ -316,7 +316,7 @@ protected:
} }
} }
else else
if (!Transcoder<SourceEncoding, TargetEncoding>::TranscodeUnsafe(is, *os_)) if (RAPIDJSON_UNLIKELY(!(Transcoder<SourceEncoding, TargetEncoding>::TranscodeUnsafe(is, *os_))))
return false; return false;
} }
PutUnsafe(*os_, '\"'); PutUnsafe(*os_, '\"');
@ -330,7 +330,7 @@ protected:
void Prefix(Type type) { void Prefix(Type type) {
(void)type; (void)type;
if (level_stack_.GetSize() != 0) { // this value is not at root if (RAPIDJSON_LIKELY(level_stack_.GetSize() != 0)) { // this value is not at root
Level* level = level_stack_.template Top<Level>(); Level* level = level_stack_.template Top<Level>();
if (level->valueCount > 0) { if (level->valueCount > 0) {
if (level->inArray) if (level->inArray)