Merge pull request github#3792 from calumgrant/cs/qldoc-coverage1

C#: Improve qldoc coverage

Author: calumgrant

csharp/ql/src/Concurrency/Concurrency.qll

@@ -1,7 +1,8 @@
-// Various utilities for writing concurrency queries.
+/** Classes for concurrency queries. */
+
 import csharp
 
-class WaitCall extends MethodCall {
+private class WaitCall extends MethodCall {
   WaitCall() {
     getTarget().hasName("Wait") and
     getTarget().getDeclaringType().hasQualifiedName("System.Threading.Monitor")
@@ -10,22 +11,24 @@ class WaitCall extends MethodCall {
   Expr getExpr() { result = getArgument(0) }
 }
 
+/** An expression statement containing a `Wait` call. */
 class WaitStmt extends ExprStmt {
   WaitStmt() { getExpr() instanceof WaitCall }
 
+  /** Gets the expression that this wait call is waiting on. */
   Expr getLock() { result = getExpr().(WaitCall).getExpr() }
 
-  // If we are waiting on a variable
+  /** Gets the variable that this wait call is waiting on, if any. */
   Variable getWaitVariable() { result.getAnAccess() = getLock() }
 
-  // If we are waiting on 'this'
+  /** Holds if this wait call waits on `this`. */
   predicate isWaitThis() { getLock() instanceof ThisAccess }
 
-  // If we are waiting on a typeof()
+  /** Gets the type that this wait call waits on, if any. */
   Type getWaitTypeObject() { result = getLock().(TypeofExpr).getTypeAccess().getTarget() }
 }
 
-class SynchronizedMethodAttribute extends Attribute {
+private class SynchronizedMethodAttribute extends Attribute {
   SynchronizedMethodAttribute() {
     getType().hasQualifiedName("System.Runtime.CompilerServices.MethodImplAttribute") and
     exists(MemberConstantAccess a, MemberConstant mc |
@@ -37,22 +40,29 @@ class SynchronizedMethodAttribute extends Attribute {
   }
 }
 
-// A method with attribute [MethodImpl(MethodImplOptions.Synchronized)]
-class SynchronizedMethod extends Method {
+/** A method with attribute `[MethodImpl(MethodImplOptions.Synchronized)]`. */
+private class SynchronizedMethod extends Method {
   SynchronizedMethod() { getAnAttribute() instanceof SynchronizedMethodAttribute }
 
+  /** Holds if this method locks `this`. */
   predicate isLockThis() { not isStatic() }
 
+  /** Gets the type that is locked by this method, if any. */
   Type getLockTypeObject() { isStatic() and result = getDeclaringType() }
 }
 
+/** A block that is locked by a `lock` statement. */
 abstract class LockedBlock extends BlockStmt {
+  /** Holds if the `lock` statement locks `this`. */
   abstract predicate isLockThis();
 
+  /** Gets the lock variable of the `lock` statement, if any. */
   abstract Variable getLockVariable();
 
+  /** Gets the locked type of the `lock` statement, if any. */
   abstract Type getLockTypeObject();
 
+  /** Gets a statement in the scope of this locked block. */
   Stmt getALockedStmt() {
     // Do this instead of getParent+, because we don't want to escape
     // delegates and lambdas
@@ -62,7 +72,7 @@ abstract class LockedBlock extends BlockStmt {
   }
 }
 
-class LockStmtBlock extends LockedBlock {
+private class LockStmtBlock extends LockedBlock {
   LockStmtBlock() { exists(LockStmt s | this = s.getBlock()) }
 
   override predicate isLockThis() { exists(LockStmt s | this = s.getBlock() and s.isLockThis()) }
@@ -76,9 +86,7 @@ class LockStmtBlock extends LockedBlock {
   }
 }
 
-/**
- * A call which may take a lock using one of the standard library classes.
- */
+/** A call that may take a lock using one of the standard library methods. */
 class LockingCall extends MethodCall {
   LockingCall() {
     this.getTarget() =
@@ -91,7 +99,7 @@ class LockingCall extends MethodCall {
   }
 }
 
-class SynchronizedMethodBlock extends LockedBlock {
+private class SynchronizedMethodBlock extends LockedBlock {
   SynchronizedMethodBlock() { exists(SynchronizedMethod m | this = m.getStatementBody()) }
 
   override predicate isLockThis() {

csharp/ql/src/Documentation/Documentation.qll

@@ -1,6 +1,8 @@
+/** Classes representing documentation comments. */
+
 import csharp
 
-class SourceDeclaration extends Declaration {
+private class SourceDeclaration extends Declaration {
   SourceDeclaration() { this.isSourceDeclaration() }
 }
 
@@ -59,48 +61,60 @@ predicate isDocumentationNeeded(Modifiable decl) {
 class ReturnsXmlComment extends XmlComment {
   ReturnsXmlComment() { getOpenTag(_) = "returns" }
 
+  /** Holds if the element in this comment has a body at offset `offset`. */
   predicate hasBody(int offset) { hasBody("returns", offset) }
 
+  /** Holds if the element in this comment is an opening tag at offset `offset`. */
   predicate isOpenTag(int offset) { "returns" = getOpenTag(offset) }
 
+  /** Holds if the element in this comment is an empty tag at offset `offset`. */
   predicate isEmptyTag(int offset) { "returns" = getEmptyTag(offset) }
 }
 
 /** An XML comment containing an `<exception>` tag. */
 class ExceptionXmlComment extends XmlComment {
   ExceptionXmlComment() { getOpenTag(_) = "exception" }
 
+  /** Gets a `cref` attribute at offset `offset`, if any. */
   string getCref(int offset) { result = getAttribute("exception", "cref", offset) }
 
+  /** Holds if the element in this comment has a body at offset `offset`. */
   predicate hasBody(int offset) { hasBody("exception", offset) }
 }
 
 /** An XML comment containing a `<param>` tag. */
 class ParamXmlComment extends XmlComment {
   ParamXmlComment() { getOpenTag(_) = "param" }
 
+  /** Gets the name of this parameter at offset `offset`. */
   string getName(int offset) { getAttribute("param", "name", offset) = result }
 
+  /** Holds if the element in this comment has a body at offset `offset`. */
   predicate hasBody(int offset) { hasBody("param", offset) }
 }
 
 /** An XML comment containing a `<typeparam>` tag. */
 class TypeparamXmlComment extends XmlComment {
   TypeparamXmlComment() { getOpenTag(_) = "typeparam" }
 
+  /** Gets the `name` attribute of this element at offset `offset`. */
   string getName(int offset) { getAttribute("typeparam", "name", offset) = result }
 
+  /** Holds if the element in this comment has a body at offset `offset`. */
   predicate hasBody(int offset) { hasBody("typeparam", offset) }
 }
 
 /** An XML comment containing a `<summary>` tag. */
 class SummaryXmlComment extends XmlComment {
   SummaryXmlComment() { getOpenTag(_) = "summary" }
 
+  /** Holds if the element in this comment has a body at offset `offset`. */
   predicate hasBody(int offset) { hasBody("summary", offset) }
 
+  /** Holds if the element in this comment has an open tag at offset `offset`. */
   predicate isOpenTag(int offset) { "summary" = getOpenTag(offset) }
 
+  /** Holds if the element in this comment is empty at offset `offset`. */
   predicate isEmptyTag(int offset) { "summary" = getEmptyTag(offset) }
 }
 

csharp/ql/src/cil.qll

@@ -1 +1,5 @@
+/**
+ * The default QL library for modeling the Common Intermediate Language (CIL).
+ */
+
 import semmle.code.cil.CIL as CIL

csharp/ql/src/dotnet.qll

@@ -1 +1,5 @@
+/**
+ * The default QL library for modeling .NET definitions for both C# and CIL code.
+ */
+
 import semmle.code.dotnet.DotNet as DotNet