ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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ARROW-9279: [C++] Implement PrettyPrint for Scalars #8151

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ARROW-9279: [C++] Implement PrettyPrint for Scalars
tianchen92 Sep 9, 2020
86b1ab6
fix build fail
tianchen92 Sep 10, 2020
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215 changes: 177 additions & 38 deletions cpp/src/arrow/pretty_print.cc
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Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
}
}

static arrow_vendored::date::sys_days epoch_ =
arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
bool add_epoch) {
if (add_epoch) {
(*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
} else {
(*sink) << arrow_vendored::date::format(fmt, Unit{value});
}
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
int64_t value, bool add_epoch) {
switch (unit) {
case TimeUnit::NANO:
FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
break;
case TimeUnit::MICRO:
FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
break;
case TimeUnit::MILLI:
FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
break;
case TimeUnit::SECOND:
FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
break;
}
}

class ScalarPrinter : public PrettyPrinter {
public:
ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
: PrettyPrinter(options, sink) {}

Status Print(const Scalar& scalar) {
if (scalar.is_valid == false) {
(*sink_) << "null";
} else {
RETURN_NOT_OK(VisitScalarInline(scalar, this));
Flush();
}
return Status::OK();
}

template <typename T>
enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
(*sink_) << internal::UpcastInt(scalar.value);
return Status::OK();
}

template <typename T>
typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
std::is_base_of<FloatScalar, T>::value ||
std::is_base_of<DoubleScalar, T>::value ||
std::is_base_of<DurationScalar, T>::value ||
std::is_base_of<MonthIntervalScalar, T>::value,
Status>::type
Visit(const T& scalar) {
(*sink_) << scalar.value;
return Status::OK();
}

template <typename T>
enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
(*sink_) << "\"" << scalar.value->ToString() << "\"";
return Status::OK();
}

template <typename T>
enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
(*sink_) << HexEncode(scalar.value->ToString());
return Status::OK();
}

template <typename T>
enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
arrow_vendored::date::days,
std::chrono::milliseconds>::type;
FormatDateTime<unit>(sink_, "%F", scalar.value, true);
return Status::OK();
}

template <typename T>
enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
const auto type = static_cast<const TimeType*>(scalar.type.get());
FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
return Status::OK();
}

Status Visit(const TimestampScalar& scalar) {
const auto type = static_cast<const TimestampType*>(scalar.type.get());
FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
return Status::OK();
}

Status Visit(const DayTimeIntervalScalar& scalar) {
auto day_millis = scalar.value;
(*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
return Status::OK();
}

Status Visit(const BooleanScalar& scalar) {
(*sink_) << (scalar.value == true ? "true" : "false");
return Status::OK();
}

Status Visit(const Decimal128Scalar& scalar) {
auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
(*sink_) << scalar.value.ToString(type->scale());
return Status::OK();
}

Status Visit(const BaseListScalar& scalar) {
(*sink_) << scalar.value->ToString();
return Status::OK();
}

Status Visit(const MapScalar& scalar) {
auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
(*sink_) << "keys:\n";
(*sink_) << inner_array->field(0)->ToString();
(*sink_) << "values:\n";
(*sink_) << inner_array->field(1)->ToString();
return Status::OK();
}

Status Visit(const StructScalar& scalar) {
std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
(*sink_) << "{";
for (size_t i = 0; i < scalars.size(); i++) {
ScalarPrinter printer(options_, sink_);
RETURN_NOT_OK(printer.Print(*scalars[i]));
if (i != scalars.size() - 1) {
(*sink_) << ", ";
}
}
(*sink_) << "}";
return Status::OK();
}

Status Visit(const UnionScalar& scalar) {
ScalarPrinter printer(options_, sink_);
RETURN_NOT_OK(printer.Print(*(scalar.value)));
return Status::OK();
}

Status Visit(const Scalar& scalar) {
return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
}
};

class ArrayPrinter : public PrettyPrinter {
public:
ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
arrow_vendored::date::days,
std::chrono::milliseconds>::type;
WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
WriteValues(array,
[&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
return Status::OK();
}

template <typename T>
enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
const auto data = array.raw_values();
const auto type = static_cast<const TimeType*>(array.type().get());
WriteValues(array,
[&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
WriteValues(array, [&](int64_t i) {
FormatDateTime(sink_, type->unit(), "%T", data[i], false);
});
return Status::OK();
}

Status WriteDataValues(const TimestampArray& array) {
const int64_t* data = array.raw_values();
const auto type = static_cast<const TimestampType*>(array.type().get());
WriteValues(array,
[&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
WriteValues(array, [&](int64_t i) {
FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
});
return Status::OK();
}

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
Flush();
return Status::OK();
}

private:
template <typename Unit>
void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
if (add_epoch) {
(*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
} else {
(*sink_) << arrow_vendored::date::format(fmt, Unit{value});
}
}

void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
bool add_epoch) {
switch (unit) {
case TimeUnit::NANO:
FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
break;
case TimeUnit::MICRO:
FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
break;
case TimeUnit::MILLI:
FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
break;
case TimeUnit::SECOND:
FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
break;
}
}

static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
Indent();
Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
std::ostream* sink) {
ScalarPrinter printer(options, sink);
return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
std::string* result) {
std::ostringstream sink;
RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
*result = sink.str();
return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
std::ostream* sink) {
int num_chunks = chunked_arr.num_chunks();
Expand Down
9 changes: 9 additions & 0 deletions cpp/src/arrow/pretty_print.h
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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 Closed

tianchen92
wants to merge
2
commits into

from

 Closed


ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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 Closed

tianchen92
wants to merge
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commits into

from

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ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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to your account

 Closed

tianchen92
wants to merge
2
commits into

from

 Closed


ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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tianchen92
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ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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to your account

 Closed

tianchen92
wants to merge
2
commits into

from

 Closed


ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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ARROW-9279: [C++] Implement PrettyPrint for Scalars#8151

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ARROW-9279: [C++] Implement PrettyPrint for Scalars
#8151
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bb0a1a5

ARROW-9279: [C++] Implement PrettyPrint for Scalars


tianchen92 Sep 9, 2020
86b1ab6

fix build fail


tianchen92 Sep 10, 2020

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215 changes: 177 additions & 38 deletions
cpp/src/arrow/pretty_print.cc

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -44,6 +44,7 @@
namespace arrow {

using internal::checked_cast;
using internal::checked_pointer_cast;

class PrettyPrinter {
 public:
Expand DownExpand Up@@ -111,6 +112,160 @@ void PrettyPrinter::Indent() {
 }
}

static arrow_vendored::date::sys_days epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

template <typename Unit>
static void FormatDateTime(std::ostream* sink, const char* fmt, int64_t value,
 bool add_epoch) {
 if (add_epoch) {
 (*sink) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink) << arrow_vendored::date::format(fmt, Unit{value});
 }
}

static void FormatDateTime(std::ostream* sink, TimeUnit::type unit, const char* fmt,
 int64_t value, bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(sink, fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(sink, fmt, value, add_epoch);
 break;
 }
}

class ScalarPrinter : public PrettyPrinter {
 public:
 ScalarPrinter(const PrettyPrintOptions& options, std::ostream* sink)
 : PrettyPrinter(options, sink) {}

 Status Print(const Scalar& scalar) {
 if (scalar.is_valid == false) {
 (*sink_) << "null";
 } else {
 RETURN_NOT_OK(VisitScalarInline(scalar, this));
 Flush();
 }
 return Status::OK();
 }

 template <typename T>
 enable_if_integer<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << internal::UpcastInt(scalar.value);
 return Status::OK();
 }

 template <typename T>
 typename std::enable_if<std::is_base_of<HalfFloatScalar, T>::value ||
 std::is_base_of<FloatScalar, T>::value ||
 std::is_base_of<DoubleScalar, T>::value ||
 std::is_base_of<DurationScalar, T>::value ||
 std::is_base_of<MonthIntervalScalar, T>::value,
 Status>::type
 Visit(const T& scalar) {
 (*sink_) << scalar.value;
 return Status::OK();
 }

 template <typename T>
 enable_if_string_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << "\"" << scalar.value->ToString() << "\"";
 return Status::OK();
 }

 template <typename T>
 enable_if_binary_like<typename T::TypeClass, Status> Visit(const T& scalar) {
 (*sink_) << HexEncode(scalar.value->ToString());
 return Status::OK();
 }

 template <typename T>
 enable_if_date<typename T::TypeClass, Status> Visit(const T& scalar) {
 using unit = typename std::conditional<std::is_same<T, Date32Scalar>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 FormatDateTime<unit>(sink_, "%F", scalar.value, true);
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> Visit(const T& scalar) {
 const auto type = static_cast<const TimeType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%T", scalar.value, false);
 return Status::OK();
 }

 Status Visit(const TimestampScalar& scalar) {
 const auto type = static_cast<const TimestampType*>(scalar.type.get());
 FormatDateTime(sink_, type->unit(), "%F %T", scalar.value, true);
 return Status::OK();
 }

 Status Visit(const DayTimeIntervalScalar& scalar) {
 auto day_millis = scalar.value;
 (*sink_) << day_millis.days << "d" << day_millis.milliseconds << "ms";
 return Status::OK();
 }

 Status Visit(const BooleanScalar& scalar) {
 (*sink_) << (scalar.value == true ? "true" : "false");
 return Status::OK();
 }

 Status Visit(const Decimal128Scalar& scalar) {
 auto type = checked_pointer_cast<Decimal128Type>(scalar.type);
 (*sink_) << scalar.value.ToString(type->scale());
 return Status::OK();
 }

 Status Visit(const BaseListScalar& scalar) {
 (*sink_) << scalar.value->ToString();
 return Status::OK();
 }

 Status Visit(const MapScalar& scalar) {
 auto inner_array = checked_pointer_cast<StructArray>(scalar.value);
 (*sink_) << "keys:\n";
 (*sink_) << inner_array->field(0)->ToString();
 (*sink_) << "values:\n";
 (*sink_) << inner_array->field(1)->ToString();
 return Status::OK();
 }

 Status Visit(const StructScalar& scalar) {
 std::vector<std::shared_ptr<Scalar>> scalars = scalar.value;
 (*sink_) << "{";
 for (size_t i = 0; i < scalars.size(); i++) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*scalars[i]));
 if (i != scalars.size() - 1) {
 (*sink_) << ", ";
 }
 }
 (*sink_) << "}";
 return Status::OK();
 }

 Status Visit(const UnionScalar& scalar) {
 ScalarPrinter printer(options_, sink_);
 RETURN_NOT_OK(printer.Print(*(scalar.value)));
 return Status::OK();
 }

 Status Visit(const Scalar& scalar) {
 return Status::NotImplemented("Not implemented type:" + scalar.type->ToString());
 }
};

class ArrayPrinter : public PrettyPrinter {
 public:
 ArrayPrinter(const PrettyPrintOptions& options, std::ostream* sink)
Expand DownExpand Up@@ -166,24 +321,27 @@ class ArrayPrinter : public PrettyPrinter {
 using unit = typename std::conditional<std::is_same<T, Date32Array>::value,
 arrow_vendored::date::days,
 std::chrono::milliseconds>::type;
 WriteValues(array, [&](int64_t i) { FormatDateTime<unit>("%F", data[i], true); });
 WriteValues(array,
 [&](int64_t i) { FormatDateTime<unit>(sink_, "%F", data[i], true); });
 return Status::OK();
 }

 template <typename T>
 enable_if_time<typename T::TypeClass, Status> WriteDataValues(const T& array) {
 const auto data = array.raw_values();
 const auto type = static_cast<const TimeType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%T", data[i], false); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%T", data[i], false);
 });
 return Status::OK();
 }

 Status WriteDataValues(const TimestampArray& array) {
 const int64_t* data = array.raw_values();
 const auto type = static_cast<const TimestampType*>(array.type().get());
 WriteValues(array,
 [&](int64_t i) { FormatDateTime(type->unit(), "%F %T", data[i], true); });
 WriteValues(array, [&](int64_t i) {
 FormatDateTime(sink_, type->unit(), "%F %T", data[i], true);
 });
 return Status::OK();
 }

Expand DownExpand Up@@ -385,41 +543,8 @@ class ArrayPrinter : public PrettyPrinter {
 Flush();
 return Status::OK();
 }

 private:
 template <typename Unit>
 void FormatDateTime(const char* fmt, int64_t value, bool add_epoch) {
 if (add_epoch) {
 (*sink_) << arrow_vendored::date::format(fmt, epoch_ + Unit{value});
 } else {
 (*sink_) << arrow_vendored::date::format(fmt, Unit{value});
 }
 }

 void FormatDateTime(TimeUnit::type unit, const char* fmt, int64_t value,
 bool add_epoch) {
 switch (unit) {
 case TimeUnit::NANO:
 FormatDateTime<std::chrono::nanoseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MICRO:
 FormatDateTime<std::chrono::microseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::MILLI:
 FormatDateTime<std::chrono::milliseconds>(fmt, value, add_epoch);
 break;
 case TimeUnit::SECOND:
 FormatDateTime<std::chrono::seconds>(fmt, value, add_epoch);
 break;
 }
 }

 static arrow_vendored::date::sys_days epoch_;
};

arrow_vendored::date::sys_days ArrayPrinter::epoch_ =
 arrow_vendored::date::sys_days{arrow_vendored::date::jan / 1 / 1970};

Status ArrayPrinter::WriteValidityBitmap(const Array& array) {
 Indent();
 Write("-- is_valid:");
Expand DownExpand Up@@ -456,6 +581,20 @@ Status PrettyPrint(const Array& arr, const PrettyPrintOptions& options,
 return Status::OK();
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink) {
 ScalarPrinter printer(options, sink);
 return printer.Print(scalar);
}

Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result) {
 std::ostringstream sink;
 RETURN_NOT_OK(PrettyPrint(scalar, options, &sink));
 *result = sink.str();
 return Status::OK();
}

Status PrettyPrint(const ChunkedArray& chunked_arr, const PrettyPrintOptions& options,
 std::ostream* sink) {
 int num_chunks = chunked_arr.num_chunks();
Expand Down

9 changes: 9 additions & 0 deletions
cpp/src/arrow/pretty_print.h

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -117,6 +117,15 @@ ARROW_EXPORT
Status PrettyPrint(const Schema& schema, const PrettyPrintOptions& options,
 std::string* result);

/// \brief Print human-readable representation of Scalar
ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::ostream* sink);

ARROW_EXPORT
Status PrettyPrint(const Scalar& scalar, const PrettyPrintOptions& options,
 std::string* result);

ARROW_EXPORT
Status DebugPrint(const Array& arr, int indent);

Expand Down
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