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

Jacopo Mondi jacopo at jmondi.org
Thu Aug 18 14:47:13 CEST 2022


Hi Laurent,

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 ?

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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