PS: Don't generate a 'Pipeline' element when the pipeline wraps a single element.

Author: MathiasVP

powershell/extractor/Semmle.Extraction.PowerShell/Entities/ArrayExpressionEntity.cs

@@ -19,7 +19,7 @@ public override void Populate(TextWriter trapFile)
             var subExpression = EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.SubExpression);
             trapFile.array_expression(this, subExpression);
             trapFile.array_expression_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/ArrayLiteralEntity.cs

@@ -23,7 +23,7 @@ public override void Populate(TextWriter trapFile)
                 var entity = EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Elements[index]);
                 trapFile.array_literal_element(this, index, entity);
             }
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/AssignmentStatementEntity.cs

@@ -19,7 +19,7 @@ public override void Populate(TextWriter trapFile)
             var right = EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Right);
             trapFile.assignment_statement(this, Fragment.Operator, left, right);
             trapFile.assignment_statement_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/AttributeEntity.cs

@@ -28,7 +28,7 @@ public override void Populate(TextWriter trapFile)
                 trapFile.attribute_positional_argument(this, i,
                     EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.PositionalArguments[i]));
             }
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/AttributedExpression.cs

@@ -17,7 +17,7 @@ public override void Populate(TextWriter trapFile)
             trapFile.attributed_expression(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Attribute), 
                 EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Child));
             trapFile.attributed_expression_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/BinaryExpressionEntity.cs

@@ -18,7 +18,7 @@ public override void Populate(TextWriter trapFile)
             var right = EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Right);
             trapFile.binary_expression(this, Fragment.Operator, left, right);
             trapFile.binary_expression_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/BlockStatementEntity.cs

@@ -16,7 +16,7 @@ public override void Populate(TextWriter trapFile)
         {
             trapFile.block_statement(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Body), TokenEntity.Create(PowerShellContext, Fragment.Kind));
             trapFile.block_statement_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/BreakStatementEntity.cs

@@ -22,7 +22,7 @@ public override void Populate(TextWriter trapFile)
             }
 
             trapFile.break_statement_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/CatchClauseEntity.cs

@@ -21,7 +21,7 @@ public override void Populate(TextWriter trapFile)
                 trapFile.catch_clause_catch_type(this, index, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.CatchTypes[index]));
             }
             trapFile.catch_clause_location(this, TrapSuitableLocation);
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;

powershell/extractor/Semmle.Extraction.PowerShell/Entities/CommandEntity.cs

@@ -31,7 +31,7 @@ public override void Populate(TextWriter trapFile)
                 var entity = EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Redirections[index]);
                 trapFile.command_redirection(this, index, entity);
             }
-            trapFile.parent(this, EntityConstructor.ConstructAppropriateEntity(PowerShellContext, Fragment.Parent));
+            trapFile.parent(PowerShellContext, this, Fragment.Parent);
         }
 
         public override bool NeedsPopulation => true;