Rewrite MSBuild parsing for improved language support

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Support for MSBuild item and item metadata expressions in project files.
 - `ExhaustiveEnumCase` analysis rule, which flags `case` statements that do not handle all values in an enumeration.
 - **API:** `EnumeratorOccurrence` type.
 - **API:** `ForInStatementNode::getEnumeratorOccurrence` method.
@@ -33,6 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Detect tab-indented multiline strings in `TabulationCharacter`.
 - Improve support for evaluating name references in compiler directive expressions.
 - Improve overload resolution in cases involving generic type parameter constraints.
+- Improve handling for MSBuild properties, items, and conditional evaluation. 
 
 ### Deprecated
 

delphi-frontend/src/main/java/au/com/integradev/delphi/enviroment/EnvironmentProjVariableProvider.java

@@ -0,0 +1,52 @@
+/*
+ * Sonar Delphi Plugin
+ * Copyright (C) 2025 Integrated Application Development
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
+ */
+package au.com.integradev.delphi.enviroment;
+
+import au.com.integradev.delphi.msbuild.MSBuildParser;
+import au.com.integradev.delphi.msbuild.MSBuildState;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Collections;
+import java.util.Map;
+
+public class EnvironmentProjVariableProvider implements EnvironmentVariableProvider {
+  private final MSBuildState state;
+
+  public EnvironmentProjVariableProvider(
+      Path environmentProj, EnvironmentVariableProvider baseProvider) {
+    if (environmentProj != null && Files.exists(environmentProj)) {
+      var parser = new MSBuildParser(environmentProj, baseProvider);
+      state = parser.parse();
+    } else {
+      state =
+          new MSBuildState(
+              environmentProj, environmentProj, baseProvider.getenv(), Collections.emptyMap());
+    }
+  }
+
+  @Override
+  public Map<String, String> getenv() {
+    return state.getProperties();
+  }
+
+  @Override
+  public String getenv(String name) {
+    return state.getProperty(name);
+  }
+}

delphi-frontend/src/main/java/au/com/integradev/delphi/msbuild/DelphiMSBuildUtils.java

@@ -0,0 +1,64 @@
+/*
+ * Sonar Delphi Plugin
+ * Copyright (C) 2025 Integrated Application Development
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
+ */
+package au.com.integradev.delphi.msbuild;
+
+import au.com.integradev.delphi.enviroment.EnvironmentVariableProvider;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class DelphiMSBuildUtils {
+  private static final Logger LOG = LoggerFactory.getLogger(DelphiMSBuildUtils.class);
+
+  private DelphiMSBuildUtils() {
+    // Utility class
+  }
+
+  public static List<Path> getSourceFiles(MSBuildState state) {
+    return state.getItems("DCCReference").stream()
+        .filter(item -> item.getMetadata("Extension").equalsIgnoreCase(".pas"))
+        .map(MSBuildItem::getPath)
+        .filter(path -> regularFileExists(path, "DCCReference"))
+        .collect(Collectors.toList());
+  }
+
+  public static List<DelphiProject> getProjects(
+      MSBuildState state, EnvironmentVariableProvider environmentVariableProvider) {
+    return state.getItems("Projects").stream()
+        .map(MSBuildItem::getPath)
+        .filter(path -> regularFileExists(path, "Projects"))
+        .map(
+            path ->
+                new DelphiProjectFactory()
+                    .createProject(new MSBuildParser(path, environmentVariableProvider).parse()))
+        .collect(Collectors.toList());
+  }
+
+  private static boolean regularFileExists(Path path, String specifiedBy) {
+    if (Files.exists(path) && Files.isRegularFile(path)) {
+      return true;
+    } else {
+      LOG.warn("File specified by {} does not exist: {}", specifiedBy, path);
+      return false;
+    }
+  }
+}