[libcamera-devel] [PATCH v4 1/9] test: yaml-parser: Simplify code by centralizing parse error checks

Laurent Pinchart laurent.pinchart at ideasonboard.com
Thu Aug 18 17:02:38 CEST 2022


Hi Jacopo,

On Thu, Aug 18, 2022 at 02:47:13PM +0200, Jacopo Mondi wrote:
> On Tue, Aug 16, 2022 at 04:54:06AM +0300, Laurent Pinchart via libcamera-devel wrote:
> > Centralize most parse failure checks in a single function to avoid a
> > larger number of copies of nearly identical checks.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> 
> This saves a lot of boilerplate indeed!
> 
> > ---
> >  test/yaml-parser.cpp | 309 +++++++++++++------------------------------
> >  1 file changed, 95 insertions(+), 214 deletions(-)
> >
> > diff --git a/test/yaml-parser.cpp b/test/yaml-parser.cpp
> > index 93ba88b8bcd5..6729e1bd430e 100644
> > --- a/test/yaml-parser.cpp
> > +++ b/test/yaml-parser.cpp
> > @@ -72,6 +72,83 @@ protected:
> >  		return TestPass;
> >  	}
> >
> > +	enum class Type {
> > +		String,
> > +		Int32,
> > +		UInt32,
> > +		Double,
> > +		Size,
> > +		List,
> > +		Dictionary,
> > +	};
> > +
> > +	int testObjectType(const YamlObject &obj, const char *name, Type type)
> > +	{
> > +		bool isList = type == Type::List || type == Type::Size;
> > +		bool isScalar = !isList && type != Type::Dictionary;
> > +		bool isInteger = type == Type::Int32 || type == Type::UInt32;
> > +		bool isSigned = type == Type::Int32;
> 
> Aren't double signed too ?

Indeed. I could rename the variable to isSignedInteger if you want.

> Anyway,
> Reviewed-by: Jacopo Mondi <jacopo at jmondi.org>
> 
> > +
> > +		if ((isScalar && !obj.isValue()) || (!isScalar && obj.isValue())) {
> > +			std::cerr
> > +				<< "Object " << name << " type mismatch when compared to "
> > +				<< "value" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if ((isList && !obj.isList()) || (!isList && obj.isList())) {
> > +			std::cerr
> > +				<< "Object " << name << " type mismatch when compared to "
> > +				<< "list" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if ((type == Type::Dictionary && !obj.isDictionary()) ||
> > +		    (type != Type::Dictionary && obj.isDictionary())) {
> > +			std::cerr
> > +				<< "Object " << name << " type mismatch when compared to "
> > +				<< "dictionary" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if (!isScalar && obj.get<std::string>()) {
> > +			std::cerr
> > +				<< "Object " << name << " didn't fail to parse as "
> > +				<< "string" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if (!isInteger && obj.get<int32_t>()) {
> > +			std::cerr
> > +				<< "Object " << name << " didn't fail to parse as "
> > +				<< "int32_t" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if ((!isInteger || isSigned) && obj.get<uint32_t>()) {
> > +			std::cerr
> > +				<< "Object " << name << " didn't fail to parse as "
> > +				<< "uint32_t" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if (!isInteger && type != Type::Double && obj.get<double>()) {
> > +			std::cerr
> > +				<< "Object " << name << " didn't fail to parse as "
> > +				<< "double" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		if (type != Type::Size && obj.get<Size>()) {
> > +			std::cerr
> > +				<< "Object " << name << " didn't fail to parse as "
> > +				<< "Size" << std::endl;
> > +			return TestFail;
> > +		}
> > +
> > +		return TestPass;
> > +	}
> > +
> >  	int run()
> >  	{
> >  		/* Test invalid YAML file */
> > @@ -107,58 +184,24 @@ protected:
> >  			return TestFail;
> >  		}
> >
> > -		if (!root->contains("string")) {
> > -			cerr << "Missing string object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("double")) {
> > -			cerr << "Missing double object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("int32_t")) {
> > -			cerr << "Missing int32_t object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("uint32_t")) {
> > -			cerr << "Missing uint32_t object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("size")) {
> > -			cerr << "Missing Size object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("list")) {
> > -			cerr << "Missing list object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("dictionary")) {
> > -			cerr << "Missing dictionary object in YAML root" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (!root->contains("level1")) {
> > -			cerr << "Missing leveled object in YAML root" << std::endl;
> > -			return TestFail;
> > +		std::vector<const char *> rootElemNames = {
> > +			"string", "double", "int32_t", "uint32_t", "size",
> > +			"list", "dictionary", "level1",
> > +		};
> > +
> > +		for (const char *name : rootElemNames) {
> > +			if (!root->contains(name)) {
> > +				cerr << "Missing " << name << " object in YAML root"
> > +				     << std::endl;
> > +				return TestFail;
> > +			}
> >  		}
> >
> >  		/* Test string object */
> >  		auto &strObj = (*root)["string"];
> >
> > -		if (strObj.isDictionary()) {
> > -			cerr << "String object parse as Dictionary" << std::endl;
> > +		if (testObjectType(strObj, "string", Type::String) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (strObj.isList()) {
> > -			cerr << "String object parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		if (strObj.get<string>().value_or("") != "libcamera" ||
> >  		    strObj.get<string>("") != "libcamera") {
> > @@ -166,38 +209,11 @@ protected:
> >  			return TestFail;
> >  		}
> >
> > -		if (strObj.get<int32_t>()) {
> > -			cerr << "String object parse as integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (strObj.get<uint32_t>()) {
> > -			cerr << "String object parse as unsigned integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (strObj.get<double>()) {
> > -			cerr << "String object parse as double" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (strObj.get<Size>()) {
> > -			cerr << "String object parse as Size" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> >  		/* Test int32_t object */
> >  		auto &int32Obj = (*root)["int32_t"];
> >
> > -		if (int32Obj.isDictionary()) {
> > -			cerr << "Integer object parse as Dictionary" << std::endl;
> > +		if (testObjectType(int32Obj, "int32_t", Type::Int32) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (int32Obj.isList()) {
> > -			cerr << "Integer object parse as Integer" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		if (int32Obj.get<int32_t>().value_or(0) != -100 ||
> >  		    int32Obj.get<int32_t>(0) != -100) {
> > @@ -217,28 +233,11 @@ protected:
> >  			return TestFail;
> >  		}
> >
> > -		if (int32Obj.get<uint32_t>()) {
> > -			cerr << "Negative integer object parse as unsigned integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (int32Obj.get<Size>()) {
> > -			cerr << "Integer object parse as Size" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> >  		/* Test uint32_t object */
> >  		auto &uint32Obj = (*root)["uint32_t"];
> >
> > -		if (uint32Obj.isDictionary()) {
> > -			cerr << "Unsigned integer object parse as Dictionary" << std::endl;
> > +		if (testObjectType(uint32Obj, "uint32_t", Type::UInt32) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (uint32Obj.isList()) {
> > -			cerr << "Unsigned integer object parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		if (uint32Obj.get<int32_t>().value_or(0) != 100 ||
> >  		    uint32Obj.get<int32_t>(0) != 100) {
> > @@ -264,23 +263,11 @@ protected:
> >  			return TestFail;
> >  		}
> >
> > -		if (uint32Obj.get<Size>()) {
> > -			cerr << "Unsigned integer object parsed as Size" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> >  		/* Test double value */
> >  		auto &doubleObj = (*root)["double"];
> >
> > -		if (doubleObj.isDictionary()) {
> > -			cerr << "Double object parse as Dictionary" << std::endl;
> > +		if (testObjectType(doubleObj, "double", Type::Double) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (doubleObj.isList()) {
> > -			cerr << "Double object parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		if (doubleObj.get<string>().value_or("") != "3.14159" ||
> >  		    doubleObj.get<string>("") != "3.14159") {
> > @@ -294,53 +281,11 @@ protected:
> >  			return TestFail;
> >  		}
> >
> > -		if (doubleObj.get<int32_t>()) {
> > -			cerr << "Double object parse as integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (doubleObj.get<uint32_t>()) {
> > -			cerr << "Double object parse as unsigned integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (doubleObj.get<Size>()) {
> > -			cerr << "Double object parse as Size" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> >  		/* Test Size value */
> >  		auto &sizeObj = (*root)["size"];
> >
> > -		if (sizeObj.isDictionary()) {
> > -			cerr << "Size object parse as Dictionary" << std::endl;
> > +		if (testObjectType(sizeObj, "size", Type::Size) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (!sizeObj.isList()) {
> > -			cerr << "Size object parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (sizeObj.get<string>()) {
> > -			cerr << "Size object parse as string" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (sizeObj.get<double>()) {
> > -			cerr << "Size object parse as double" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (sizeObj.get<int32_t>()) {
> > -			cerr << "Size object parse as integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (sizeObj.get<uint32_t>()) {
> > -			cerr << "Size object parse as unsigned integer" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		if (sizeObj.get<Size>().value_or(Size(0, 0)) != Size(1920, 1080) ||
> >  		    sizeObj.get<Size>(Size(0, 0)) != Size(1920, 1080)) {
> > @@ -351,40 +296,8 @@ protected:
> >  		/* Test list object */
> >  		auto &listObj = (*root)["list"];
> >
> > -		if (listObj.isDictionary()) {
> > -			cerr << "List object parse as Dictionary" << std::endl;
> > +		if (testObjectType(listObj, "list", Type::List) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (!listObj.isList()) {
> > -			cerr << "List object fail to parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (listObj.get<string>()) {
> > -			cerr << "List object parse as string" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (listObj.get<double>()) {
> > -			cerr << "List object parse as double" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (listObj.get<int32_t>()) {
> > -			cerr << "List object parse as integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (listObj.get<uint32_t>()) {
> > -			cerr << "List object parse as unsigne integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (listObj.get<Size>()) {
> > -			cerr << "String list object parse as Size" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		static constexpr std::array<const char *, 2> listValues{
> >  			"James",
> > @@ -424,40 +337,8 @@ protected:
> >  		/* Test dictionary object */
> >  		auto &dictObj = (*root)["dictionary"];
> >
> > -		if (!dictObj.isDictionary()) {
> > -			cerr << "Dictionary object fail to parse as Dictionary" << std::endl;
> > +		if (testObjectType(dictObj, "dictionary", Type::Dictionary) != TestPass)
> >  			return TestFail;
> > -		}
> > -
> > -		if (dictObj.isList()) {
> > -			cerr << "Dictionary object parse as List" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (dictObj.get<string>()) {
> > -			cerr << "Dictionary object parse as string" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (dictObj.get<double>()) {
> > -			cerr << "Dictionary object parse as double" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (dictObj.get<int32_t>()) {
> > -			cerr << "Dictionary object parse as integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (dictObj.get<uint32_t>()) {
> > -			cerr << "Dictionary object parse as unsigned integer" << std::endl;
> > -			return TestFail;
> > -		}
> > -
> > -		if (dictObj.get<Size>()) {
> > -			cerr << "Dictionary object parse as Size" << std::endl;
> > -			return TestFail;
> > -		}
> >
> >  		static constexpr std::array<std::pair<const char *, int>, 3> dictValues{ {
> >  			{ "a", 1 },

-- 
Regards,

Laurent Pinchart


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