add explicit this

cpp/ql/src/Likely Bugs/Memory Management/UsingExpiredStackAddress.ql

@@ -268,7 +268,11 @@ class PathElement extends TPathElement {
   predicate isSink(IRBlock block) { exists(this.asSink(block)) }
 
   string toString() {
-    result = [asStore().toString(), asCall(_).toString(), asMid().toString(), asSink(_).toString()]
+    result =
+      [
+        this.asStore().toString(), this.asCall(_).toString(), this.asMid().toString(),
+        this.asSink(_).toString()
+      ]
   }
 
   predicate hasLocationInfo(

go/ql/lib/semmle/go/AST.qll

@@ -28,12 +28,12 @@ class AstNode extends @node, Locatable {
   /**
    * Gets a child node of this node.
    */
-  AstNode getAChild() { result = getChild(_) }
+  AstNode getAChild() { result = this.getChild(_) }
 
   /**
    * Gets the number of child nodes of this node.
    */
-  int getNumChild() { result = count(getAChild()) }
+  int getNumChild() { result = count(this.getAChild()) }
 
   /**
    * Gets a child with the given index and of the given kind, if one exists.
@@ -63,7 +63,7 @@ class AstNode extends @node, Locatable {
   AstNode getUniquelyNumberedChild(int index) {
     result =
       rank[index + 1](AstNode child, string kind, int i |
-        child = getChildOfKind(kind, i)
+        child = this.getChildOfKind(kind, i)
       |
         child order by kind, i
       )
@@ -74,17 +74,17 @@ class AstNode extends @node, Locatable {
 
   /** Gets the parent node of this AST node, but without crossing function boundaries. */
   private AstNode parentInSameFunction() {
-    result = getParent() and
+    result = this.getParent() and
     not this instanceof FuncDef
   }
 
   /** Gets the innermost function definition to which this AST node belongs, if any. */
-  FuncDef getEnclosingFunction() { result = getParent().parentInSameFunction*() }
+  FuncDef getEnclosingFunction() { result = this.getParent().parentInSameFunction*() }
 
   /**
    * Gets a comma-separated list of the names of the primary CodeQL classes to which this element belongs.
    */
-  final string getPrimaryQlClasses() { result = concat(getAPrimaryQlClass(), ",") }
+  final string getPrimaryQlClasses() { result = concat(this.getAPrimaryQlClass(), ",") }
 
   /**
    * Gets the name of a primary CodeQL class to which this node belongs.
@@ -116,12 +116,12 @@ class ExprParent extends @exprparent, AstNode {
   /**
    * Gets an expression that is a child node of this node in the AST.
    */
-  Expr getAChildExpr() { result = getChildExpr(_) }
+  Expr getAChildExpr() { result = this.getChildExpr(_) }
 
   /**
    * Gets the number of child expressions of this node.
    */
-  int getNumChildExpr() { result = count(getAChildExpr()) }
+  int getNumChildExpr() { result = count(this.getAChildExpr()) }
 }
 
 /**
@@ -139,12 +139,12 @@ class GoModExprParent extends @modexprparent, AstNode {
   /**
    * Gets an expression that is a child node of this node in the AST.
    */
-  GoModExpr getAChildGoModExpr() { result = getChildGoModExpr(_) }
+  GoModExpr getAChildGoModExpr() { result = this.getChildGoModExpr(_) }
 
   /**
    * Gets the number of child expressions of this node.
    */
-  int getNumChildGoModExpr() { result = count(getAChildGoModExpr()) }
+  int getNumChildGoModExpr() { result = count(this.getAChildGoModExpr()) }
 }
 
 /**
@@ -162,12 +162,12 @@ class StmtParent extends @stmtparent, AstNode {
   /**
    * Gets a statement that is a child node of this node in the AST.
    */
-  Stmt getAChildStmt() { result = getChildStmt(_) }
+  Stmt getAChildStmt() { result = this.getChildStmt(_) }
 
   /**
    * Gets the number of child statements of this node.
    */
-  int getNumChildStmt() { result = count(getAChildStmt()) }
+  int getNumChildStmt() { result = count(this.getAChildStmt()) }
 }
 
 /**
@@ -185,12 +185,12 @@ class DeclParent extends @declparent, AstNode {
   /**
    * Gets a child declaration of this node in the AST.
    */
-  Decl getADecl() { result = getDecl(_) }
+  Decl getADecl() { result = this.getDecl(_) }
 
   /**
    * Gets the number of child declarations of this node.
    */
-  int getNumDecl() { result = count(getADecl()) }
+  int getNumDecl() { result = count(this.getADecl()) }
 }
 
 /**
@@ -208,12 +208,12 @@ class FieldParent extends @fieldparent, AstNode {
   /**
    * Gets a child field of this node in the AST.
    */
-  FieldBase getAField() { result = getField(_) }
+  FieldBase getAField() { result = this.getField(_) }
 
   /**
    * Gets the number of child fields of this node.
    */
-  int getNumFields() { result = count(getAField()) }
+  int getNumFields() { result = count(this.getAField()) }
 }
 
 /**

go/ql/lib/semmle/go/Types.qll

@@ -787,7 +787,7 @@ class InterfaceType extends @interfacetype, CompositeType {
    * Note that the indexes are not contiguous.
    */
   TypeSetLiteralType getDirectlyEmbeddedTypeSetLiteral(int index) {
-    hasDirectlyEmbeddedType(index, result)
+    this.hasDirectlyEmbeddedType(index, result)
   }
 
   /**
@@ -798,7 +798,7 @@ class InterfaceType extends @interfacetype, CompositeType {
   TypeSetLiteralType getAnEmbeddedTypeSetLiteral() {
     result = this.getDirectlyEmbeddedTypeSetLiteral(_) or
     result =
-      getADirectlyEmbeddedInterface()
+      this.getADirectlyEmbeddedInterface()
           .getUnderlyingType()
           .(InterfaceType)
           .getAnEmbeddedTypeSetLiteral()

java/ql/lib/semmle/code/java/frameworks/android/SQLite.qll

@@ -9,21 +9,23 @@ private import semmle.code.java.frameworks.android.Android
  * The class `android.database.sqlite.SQLiteDatabase`.
  */
 class TypeSQLiteDatabase extends Class {
-  TypeSQLiteDatabase() { hasQualifiedName("android.database.sqlite", "SQLiteDatabase") }
+  TypeSQLiteDatabase() { this.hasQualifiedName("android.database.sqlite", "SQLiteDatabase") }
 }
 
 /**
  * The class `android.database.sqlite.SQLiteQueryBuilder`.
  */
 class TypeSQLiteQueryBuilder extends Class {
-  TypeSQLiteQueryBuilder() { hasQualifiedName("android.database.sqlite", "SQLiteQueryBuilder") }
+  TypeSQLiteQueryBuilder() {
+    this.hasQualifiedName("android.database.sqlite", "SQLiteQueryBuilder")
+  }
 }
 
 /**
  * The class `android.database.DatabaseUtils`.
  */
 class TypeDatabaseUtils extends Class {
-  TypeDatabaseUtils() { hasQualifiedName("android.database", "DatabaseUtils") }
+  TypeDatabaseUtils() { this.hasQualifiedName("android.database", "DatabaseUtils") }
 }
 
 /**

java/ql/src/Security/CWE/CWE-200/TempDirUtils.qll

@@ -53,7 +53,7 @@ private class FileSetRedableMethodAccess extends MethodAccess {
   private predicate isCallToSecondArgumentWithValue(boolean value) {
     this.getMethod().getNumberOfParameters() = 1 and value = true
     or
-    isCallWithArgument(1, value)
+    this.isCallWithArgument(1, value)
   }
 
   private predicate isCallWithArgument(int index, boolean arg) {

python/ql/test/TestUtilities/VerifyApiGraphs.qll

@@ -84,8 +84,8 @@ class Assertion extends Comment {
   string tryExplainFailure() {
     exists(int i, API::Node nd, string prefix, string suffix |
       nd = this.lookup(i) and
-      i < getPathLength() and
-      not exists(this.lookup([i + 1 .. getPathLength()])) and
+      i < this.getPathLength() and
+      not exists(this.lookup([i + 1 .. this.getPathLength()])) and
       prefix = nd + " has no outgoing edge labelled " + this.getEdgeLabel(i) + ";" and
       if exists(nd.getASuccessor())
       then

python/tools/recorded-call-graph-metrics/ql/lib/RecordedCalls.qll

@@ -11,7 +11,7 @@ class XmlRecordedCall extends XMLElement {
   XmlCall getXmlCall() { result.getParent() = this }
 
   /** DEPRECATED: Alias for getXmlCall */
-  deprecated XMLCall getXMLCall() { result = getXmlCall() }
+  deprecated XMLCall getXMLCall() { result = this.getXmlCall() }
 
   /** Gets a call matching the recorded information. */
   Call getACall() { result = this.getXmlCall().getACall() }
@@ -20,7 +20,7 @@ class XmlRecordedCall extends XMLElement {
   XmlCallee getXmlCallee() { result.getParent() = this }
 
   /** DEPRECATED: Alias for getXmlCallee */
-  deprecated XMLCallee getXMLCallee() { result = getXmlCallee() }
+  deprecated XMLCallee getXMLCallee() { result = this.getXmlCallee() }
 
   /** Gets a python function matching the recorded information of the callee. */
   Function getAPythonCallee() { result = this.getXmlCallee().(XmlPythonCallee).getACallee() }
@@ -90,10 +90,10 @@ class XmlCall extends XMLElement {
       expr.(Name).getId() = bytecode.(XmlBytecodeVariableName).get_name_data()
       or
       expr.(Attribute).getName() = bytecode.(XmlBytecodeAttribute).get_attr_name_data() and
-      matchBytecodeExpr(expr.(Attribute).getObject(),
+      this.matchBytecodeExpr(expr.(Attribute).getObject(),
         bytecode.(XmlBytecodeAttribute).get_object_data())
       or
-      matchBytecodeExpr(expr.(Call).getFunc(), bytecode.(XmlBytecodeCall).get_function_data())
+      this.matchBytecodeExpr(expr.(Call).getFunc(), bytecode.(XmlBytecodeCall).get_function_data())
       //
       // I considered allowing a partial match as well. That is, if the bytecode
       // expression information only tells us `<unknown>.foo()`, and we find an AST

swift/ql/lib/codeql/swift/dataflow/internal/DataFlowPrivate.qll

@@ -176,7 +176,7 @@ private module ParameterNodes {
       )
     }
 
-    override DataFlowCallable getEnclosingCallable() { isParameterOf(result, _) }
+    override DataFlowCallable getEnclosingCallable() { this.isParameterOf(result, _) }
   }
 }
 

swift/ql/lib/codeql/swift/elements/Comment.qll

@@ -2,7 +2,7 @@ private import codeql.swift.generated.Comment
 
 class Comment extends CommentBase {
   /** toString */
-  override string toString() { result = getText() }
+  override string toString() { result = this.getText() }
 }
 
 class SingleLineComment extends Comment {

swift/ql/lib/codeql/swift/elements/Element.qll

@@ -3,7 +3,7 @@ private import codeql.swift.generated.Element
 class Element extends ElementBase {
   private predicate resolvesFrom(Element e) { e.getResolveStep() = this }
 
-  override string toString() { result = getPrimaryQlClasses() }
+  override string toString() { result = this.getPrimaryQlClasses() }
 
   Element getFullyUnresolved() {
     not this.resolvesFrom(_) and result = this
@@ -16,5 +16,5 @@ class Element extends ElementBase {
 }
 
 class UnknownElement extends Element {
-  UnknownElement() { isUnknown() }
+  UnknownElement() { this.isUnknown() }
 }

swift/ql/lib/codeql/swift/elements/File.qll

@@ -2,13 +2,13 @@ private import codeql.swift.generated.File
 
 class File extends FileBase {
   /** toString */
-  override string toString() { result = getAbsolutePath() }
+  override string toString() { result = this.getAbsolutePath() }
 
   /** Gets the absolute path of this file. */
-  string getAbsolutePath() { result = getName() }
+  string getAbsolutePath() { result = this.getName() }
 
   /** Gets the full name of this file. */
-  string getFullName() { result = getAbsolutePath() }
+  string getFullName() { result = this.getAbsolutePath() }
 
   /** Gets the URL of this file. */
   string getURL() { result = "file://" + this.getAbsolutePath() + ":0:0:0:0" }

swift/ql/lib/codeql/swift/generated/Element.qll

@@ -12,9 +12,9 @@ class ElementBase extends Synth::TElement {
   ElementBase getResolveStep() { none() } // overridden by subclasses
 
   final ElementBase resolve() {
-    not exists(getResolveStep()) and result = this
+    not exists(this.getResolveStep()) and result = this
     or
-    result = getResolveStep().resolve()
+    result = this.getResolveStep().resolve()
   }
 
   predicate isUnknown() { Synth::convertElementToRaw(this).isUnknown() }

swift/ql/test/library-tests/controlflow/graph/Cfg.ql

@@ -7,7 +7,7 @@ import codeql.swift.controlflow.ControlFlowGraph
 import codeql.swift.controlflow.internal.ControlFlowGraphImpl::TestOutput
 
 class MyRelevantNode extends RelevantNode {
-  MyRelevantNode() { getScope().getLocation().getFile().getName().matches("%swift/ql/test%") }
+  MyRelevantNode() { this.getScope().getLocation().getFile().getName().matches("%swift/ql/test%") }
 
   private AstNode asAstNode() { result = this.getNode().asAstNode() }