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-rw-r--r--src/libcamera/yaml_parser.cpp138
1 files changed, 53 insertions, 85 deletions
diff --git a/src/libcamera/yaml_parser.cpp b/src/libcamera/yaml_parser.cpp
index 5c45e44e..4299f5ab 100644
--- a/src/libcamera/yaml_parser.cpp
+++ b/src/libcamera/yaml_parser.cpp
@@ -31,12 +31,6 @@ namespace {
/* Empty static YamlObject as a safe result for invalid operations */
static const YamlObject empty;
-void setOk(bool *ok, bool result)
-{
- if (ok)
- *ok = result;
-}
-
} /* namespace */
/**
@@ -100,54 +94,52 @@ std::size_t YamlObject::size() const
}
/**
- * \fn template<typename T> YamlObject::get<T>(
- * const T &defaultValue, bool *ok) const
+ * \fn template<typename T> YamlObject::get<T>() const
* \brief Parse the YamlObject as a \a T value
- * \param[in] defaultValue The default value when failing to parse
- * \param[out] ok The result of whether the parse succeeded
*
* This function parses the value of the YamlObject as a \a T object, and
* returns the value. If parsing fails (usually because the YamlObject doesn't
- * store a \a T value), the \a defaultValue is returned, and \a ok is set to
- * false. Otherwise, the YamlObject value is returned, and \a ok is set to true.
+ * store a \a T value), std::nullopt is returned.
+ *
+ * \return The YamlObject value, or std::nullopt if parsing failed
+ */
+
+/**
+ * \fn template<typename T> YamlObject::get<T>(const T &defaultValue) const
+ * \brief Parse the YamlObject as a \a T value
+ * \param[in] defaultValue The default value when failing to parse
*
- * The \a ok pointer is optional and can be a nullptr if the caller doesn't
- * need to know if parsing succeeded.
+ * This function parses the value of the YamlObject as a \a T object, and
+ * returns the value. If parsing fails (usually because the YamlObject doesn't
+ * store a \a T value), the \a defaultValue is returned.
*
- * \return Value as a bool type
+ * \return The YamlObject value, or \a defaultValue if parsing failed
*/
#ifndef __DOXYGEN__
template<>
-bool YamlObject::get(const bool &defaultValue, bool *ok) const
+std::optional<bool> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
- if (value_ == "true") {
- setOk(ok, true);
+ if (value_ == "true")
return true;
- } else if (value_ == "false") {
- setOk(ok, true);
+ else if (value_ == "false")
return false;
- }
- return defaultValue;
+ return {};
}
template<>
-int16_t YamlObject::get(const int16_t &defaultValue, bool *ok) const
+std::optional<int16_t> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
if (value_ == "")
- return defaultValue;
+ return {};
char *end;
@@ -157,22 +149,19 @@ int16_t YamlObject::get(const int16_t &defaultValue, bool *ok) const
if ('\0' != *end || errno == ERANGE ||
value < std::numeric_limits<int16_t>::min() ||
value > std::numeric_limits<int16_t>::max())
- return defaultValue;
+ return {};
- setOk(ok, true);
return value;
}
template<>
-uint16_t YamlObject::get(const uint16_t &defaultValue, bool *ok) const
+std::optional<uint16_t> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
if (value_ == "")
- return defaultValue;
+ return {};
/*
* libyaml parses all scalar values as strings. When a string has
@@ -183,7 +172,7 @@ uint16_t YamlObject::get(const uint16_t &defaultValue, bool *ok) const
*/
std::size_t found = value_.find_first_not_of(" \t");
if (found != std::string::npos && value_[found] == '-')
- return defaultValue;
+ return {};
char *end;
@@ -193,22 +182,19 @@ uint16_t YamlObject::get(const uint16_t &defaultValue, bool *ok) const
if ('\0' != *end || errno == ERANGE ||
value < std::numeric_limits<uint16_t>::min() ||
value > std::numeric_limits<uint16_t>::max())
- return defaultValue;
+ return {};
- setOk(ok, true);
return value;
}
template<>
-int32_t YamlObject::get(const int32_t &defaultValue, bool *ok) const
+std::optional<int32_t> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
if (value_ == "")
- return defaultValue;
+ return {};
char *end;
@@ -218,22 +204,19 @@ int32_t YamlObject::get(const int32_t &defaultValue, bool *ok) const
if ('\0' != *end || errno == ERANGE ||
value < std::numeric_limits<int32_t>::min() ||
value > std::numeric_limits<int32_t>::max())
- return defaultValue;
+ return {};
- setOk(ok, true);
return value;
}
template<>
-uint32_t YamlObject::get(const uint32_t &defaultValue, bool *ok) const
+std::optional<uint32_t> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
if (value_ == "")
- return defaultValue;
+ return {};
/*
* libyaml parses all scalar values as strings. When a string has
@@ -244,7 +227,7 @@ uint32_t YamlObject::get(const uint32_t &defaultValue, bool *ok) const
*/
std::size_t found = value_.find_first_not_of(" \t");
if (found != std::string::npos && value_[found] == '-')
- return defaultValue;
+ return {};
char *end;
@@ -254,22 +237,19 @@ uint32_t YamlObject::get(const uint32_t &defaultValue, bool *ok) const
if ('\0' != *end || errno == ERANGE ||
value < std::numeric_limits<uint32_t>::min() ||
value > std::numeric_limits<uint32_t>::max())
- return defaultValue;
+ return {};
- setOk(ok, true);
return value;
}
template<>
-double YamlObject::get(const double &defaultValue, bool *ok) const
+std::optional<double> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
if (value_ == "")
- return defaultValue;
+ return {};
char *end;
@@ -277,50 +257,38 @@ double YamlObject::get(const double &defaultValue, bool *ok) const
double value = std::strtod(value_.c_str(), &end);
if ('\0' != *end || errno == ERANGE)
- return defaultValue;
+ return {};
- setOk(ok, true);
return value;
}
template<>
-std::string YamlObject::get(const std::string &defaultValue, bool *ok) const
+std::optional<std::string> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::Value)
- return defaultValue;
+ return {};
- setOk(ok, true);
return value_;
}
template<>
-Size YamlObject::get(const Size &defaultValue, bool *ok) const
+std::optional<Size> YamlObject::get() const
{
- setOk(ok, false);
-
if (type_ != Type::List)
- return defaultValue;
+ return {};
if (list_.size() != 2)
- return defaultValue;
+ return {};
- /*
- * Add a local variable to validate each dimension in case
- * that ok == nullptr.
- */
- bool valid;
- uint32_t width = list_[0]->get<uint32_t>(0, &valid);
- if (!valid)
- return defaultValue;
+ auto width = list_[0]->get<uint32_t>();
+ if (!width)
+ return {};
- uint32_t height = list_[1]->get<uint32_t>(0, &valid);
- if (!valid)
- return defaultValue;
+ auto height = list_[1]->get<uint32_t>();
+ if (!height)
+ return {};
- setOk(ok, true);
- return Size(width, height);
+ return Size(*width, *height);
}
#endif /* __DOXYGEN__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-10 13:01:36 +0000