logic: add include path validation to project settings

src/lib_cxx/project/IncludeValidation.cpp

@@ -0,0 +1,160 @@
+#include "project/IncludeValidation.h"
+
+#include "project/IncludeDirective.h"
+#include "utility/file/FilePath.h"
+#include "utility/text/TextAccess.h"
+#include "utility/utility.h"
+#include "utility/utilityString.h"
+
+std::vector<IncludeDirective> IncludeValidation::getUnresolvedIncludeDirectives(
+	const std::vector<FilePath>& sourceFilePaths,
+	const std::vector<FilePath>& indexedPaths,
+	const std::vector<FilePath>& headerSearchDirectories,
+	size_t quantileCount, std::function<void(float)> progress
+)
+{
+	struct IncludeDirectiveComparator
+	{
+		bool operator()(const IncludeDirective& a, const IncludeDirective& b)
+		{
+			return a.getIncludedFile() < b.getIncludedFile();
+		}
+	};
+
+	std::set<std::string> processedFilePaths;
+	std::set<IncludeDirective, IncludeDirectiveComparator> unresolvedIncludeDirectives;
+
+	quantileCount = std::min(quantileCount, sourceFilePaths.size());
+
+	std::vector<std::vector<FilePath>> quantiles;
+	for (size_t i = 0; i < quantileCount; i++)
+	{
+		quantiles.push_back(std::vector<FilePath>());
+	}
+	for (size_t i = 0; i < sourceFilePaths.size(); i++)
+	{
+		quantiles[i%quantileCount].push_back(sourceFilePaths[i]);
+	}
+
+	for (size_t i = 0; i < quantiles.size(); i++)
+	{
+		const std::vector<FilePath>& quantile = quantiles[i];
+
+		progress(float(i) / quantiles.size());
+
+		std::set<FilePath> unprocessedFilePaths(quantile.begin(), quantile.end());
+
+		while (!unprocessedFilePaths.empty())
+		{
+			std::transform(unprocessedFilePaths.begin(), unprocessedFilePaths.end(), std::inserter(processedFilePaths, processedFilePaths.begin()), [](const FilePath& p){ return p.str(); });
+			std::set<FilePath> tempUnprocessedFilePaths;
+
+			for (const FilePath& filePath: unprocessedFilePaths)
+			{
+				for (const IncludeDirective& includeDirective: getIncludeDirectives(filePath))
+				{
+					const FilePath resolvedIncludePath = resolveIncludeDirective(includeDirective, headerSearchDirectories);
+					if (resolvedIncludePath.empty())
+					{
+						unresolvedIncludeDirectives.insert(includeDirective);
+					}
+					else if (processedFilePaths.find(resolvedIncludePath.str()) == processedFilePaths.end())
+					{
+						for (const FilePath& indexedPath: indexedPaths)
+						{
+							if (indexedPath.contains(resolvedIncludePath))
+							{
+								tempUnprocessedFilePaths.insert(resolvedIncludePath);
+								break;
+							}
+						}
+					}
+				}
+			}
+
+			unprocessedFilePaths = tempUnprocessedFilePaths;
+		}
+	}
+
+	std::vector<IncludeDirective> ret;
+
+	for (const IncludeDirective& directive: unresolvedIncludeDirectives)
+	{
+		ret.push_back(directive);
+	}
+
+	progress(1.0f);
+
+	return ret;
+}
+
+std::vector<IncludeDirective> IncludeValidation::getIncludeDirectives(const FilePath& filePath)
+{
+	std::vector<IncludeDirective> includeDirectives;
+
+	if (filePath.exists())
+	{
+		std::shared_ptr<TextAccess> textAccess = TextAccess::createFromFile(filePath);
+		const std::vector<std::string> lines = textAccess->getAllLines();
+		for (size_t i = 0; i < lines.size(); i++)
+		{
+			const std::string lineTrimmedToHash = utility::trim(lines[i]);
+			if (utility::isPrefix("#", lineTrimmedToHash))
+			{
+				const std::string lineTrimmedToInclude = utility::trim(lineTrimmedToHash.substr(1));
+				if (utility::isPrefix("include", lineTrimmedToInclude))
+				{
+					std::string includeString = utility::substrBetween(lineTrimmedToInclude, "<", ">");
+					bool usesBrackets = true;
+					if (includeString.empty())
+					{
+						includeString = utility::substrBetween(lineTrimmedToInclude, "\"", "\"");
+						usesBrackets = false;
+					}
+
+					if (!includeString.empty())
+					{
+						// lines are 1 based
+						includeDirectives.push_back(IncludeDirective(FilePath(includeString), filePath, i + 1, usesBrackets));
+					}
+				}
+			}
+		}
+	}
+
+	return includeDirectives;
+}
+
+FilePath IncludeValidation::resolveIncludeDirective(const IncludeDirective& includeDirective, const std::vector<FilePath>& headerSearchDirectories)
+{
+	{
+		// check for an absolute include path
+		if (includeDirective.getIncludedFile().exists())
+		{
+			return includeDirective.getIncludedFile();
+		}
+	}
+
+	{
+		// check for an include path relative to the including path
+		FilePath resolvedIncludePath = includeDirective.getIncludingFile().parentDirectory().concat(includeDirective.getIncludedFile());
+		if (resolvedIncludePath.exists())
+		{
+			return resolvedIncludePath;
+		}
+	}
+
+	{
+		// check for an include path relative to the header search directories
+		for (const FilePath& headerSearchDirectory: headerSearchDirectories)
+		{
+			FilePath resolvedIncludePath = headerSearchDirectory.concat(includeDirective.getIncludedFile());
+			if (resolvedIncludePath.exists())
+			{
+				return resolvedIncludePath;
+			}
+		}
+	}
+
+	return FilePath();
+}