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michaelnebelmichaelnebel
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Merge pull request github#12147 from michaelnebel/csharp/relaxedshift
C# 11: Test of relaxed shift operator requirements.
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‎csharp/ql/test/library-tests/csharp11/PrintAst.expected

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# 16| 2: [DefaultCase] default:
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# 16| 3: [BlockStmt] {...}
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# 16| 0: [BreakStmt] break;
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RelaxedShift.cs:
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# 1| [Interface] IShiftOperators<,,>
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#-----| 1: (Type parameters)
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# 1| 0: [TypeParameter] TSelf
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# 1| 1: [TypeParameter] TOther
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# 1| 2: [TypeParameter] TReturn
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# 3| 4: [LeftShiftOperator] <<
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# 3| -1: [TypeMention] TReturn
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#-----| 2: (Parameters)
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# 3| 0: [Parameter] value
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# 3| -1: [TypeMention] TSelf
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# 3| 1: [Parameter] shiftAmount
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# 3| -1: [TypeMention] TOther
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# 5| 5: [RightShiftOperator] >>
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# 5| -1: [TypeMention] TReturn
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#-----| 2: (Parameters)
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# 5| 0: [Parameter] value
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# 5| -1: [TypeMention] TSelf
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# 5| 1: [Parameter] shiftAmount
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# 5| -1: [TypeMention] TOther
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# 7| 6: [UnsignedRightShiftOperator] >>>
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# 7| -1: [TypeMention] TReturn
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#-----| 2: (Parameters)
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# 7| 0: [Parameter] value
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# 7| -1: [TypeMention] TSelf
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# 7| 1: [Parameter] shiftAmount
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# 7| -1: [TypeMention] TOther
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# 10| [Class] Number
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#-----| 3: (Base types)
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# 12| 5: [LeftShiftOperator] <<
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# 12| -1: [TypeMention] Number
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#-----| 2: (Parameters)
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# 12| 0: [Parameter] value
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# 12| -1: [TypeMention] Number
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# 12| 1: [Parameter] shiftAmount
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# 12| -1: [TypeMention] string
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# 12| 4: [ParameterAccess] access to parameter value
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# 14| 6: [RightShiftOperator] >>
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# 14| -1: [TypeMention] Number
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#-----| 2: (Parameters)
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# 14| 0: [Parameter] value
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# 14| -1: [TypeMention] Number
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# 14| 1: [Parameter] shiftAmount
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# 14| -1: [TypeMention] string
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# 14| 4: [ParameterAccess] access to parameter value
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# 16| 7: [UnsignedRightShiftOperator] >>>
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# 16| -1: [TypeMention] Number
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#-----| 2: (Parameters)
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# 16| 0: [Parameter] value
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# 16| -1: [TypeMention] Number
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# 16| 1: [Parameter] shiftAmount
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# 16| -1: [TypeMention] string
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# 16| 4: [ParameterAccess] access to parameter value
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# 19| [Class] TestRelaxedShift
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# 21| 5: [Method] M1
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# 21| -1: [TypeMention] Void
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# 22| 4: [BlockStmt] {...}
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# 23| 0: [LocalVariableDeclStmt] ... ...;
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# 23| 0: [LocalVariableDeclAndInitExpr] Number n11 = ...
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# 23| -1: [TypeMention] Number
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# 23| 0: [LocalVariableAccess] access to local variable n11
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# 23| 1: [ObjectCreation] object creation of type Number
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# 23| 0: [TypeMention] Number
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# 24| 1: [LocalVariableDeclStmt] ... ...;
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# 24| 0: [LocalVariableDeclAndInitExpr] Number n12 = ...
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# 24| -1: [TypeMention] Number
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# 24| 0: [LocalVariableAccess] access to local variable n12
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# 24| 1: [OperatorCall] call to operator <<
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# 24| 0: [LocalVariableAccess] access to local variable n11
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# 24| 1: [StringLiteralUtf16] "1"
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# 26| 2: [LocalVariableDeclStmt] ... ...;
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# 26| 0: [LocalVariableDeclAndInitExpr] Number n21 = ...
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# 26| -1: [TypeMention] Number
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# 26| 0: [LocalVariableAccess] access to local variable n21
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# 26| 1: [ObjectCreation] object creation of type Number
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# 26| 0: [TypeMention] Number
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# 27| 3: [LocalVariableDeclStmt] ... ...;
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# 27| 0: [LocalVariableDeclAndInitExpr] Number n22 = ...
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# 27| -1: [TypeMention] Number
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# 27| 0: [LocalVariableAccess] access to local variable n22
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# 27| 1: [OperatorCall] call to operator >>
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# 27| 0: [LocalVariableAccess] access to local variable n21
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# 27| 1: [StringLiteralUtf16] "2"
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# 29| 4: [LocalVariableDeclStmt] ... ...;
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# 29| 0: [LocalVariableDeclAndInitExpr] Number n31 = ...
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# 29| -1: [TypeMention] Number
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# 29| 0: [LocalVariableAccess] access to local variable n31
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# 29| 1: [ObjectCreation] object creation of type Number
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# 29| 0: [TypeMention] Number
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# 30| 5: [LocalVariableDeclStmt] ... ...;
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# 30| 0: [LocalVariableDeclAndInitExpr] Number n32 = ...
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# 30| -1: [TypeMention] Number
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# 30| 0: [LocalVariableAccess] access to local variable n32
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# 30| 1: [OperatorCall] call to operator >>>
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# 30| 0: [LocalVariableAccess] access to local variable n31
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# 30| 1: [StringLiteralUtf16] "3"
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Scoped.cs:
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# 1| [Struct] S1
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# 2| [Struct] S2

‎csharp/ql/test/library-tests/csharp11/RelaxedShift.cs

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public interface IShiftOperators<TSelf, TOther, TReturn> where TSelf : IShiftOperators<TSelf, TOther, TReturn>
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{
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public static abstract TReturn operator <<(TSelf value, TOther shiftAmount);
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public static abstract TReturn operator >>(TSelf value, TOther shiftAmount);
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public static abstract TReturn operator >>>(TSelf value, TOther shiftAmount);
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}
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public class Number : IShiftOperators<Number, string, Number>
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{
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public static Number operator <<(Number value, string shiftAmount) => value;
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public static Number operator >>(Number value, string shiftAmount) => value;
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public static Number operator >>>(Number value, string shiftAmount) => value;
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}
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public class TestRelaxedShift
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{
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public void M1()
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{
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var n11 = new Number();
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var n12 = n11 << "1";
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var n21 = new Number();
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var n22 = n21 >> "2";
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var n31 = new Number();
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var n32 = n31 >>> "3";
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}
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}

‎csharp/ql/test/library-tests/csharp11/relaxedShift.expected

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userdefinedoperators
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| RelaxedShift.cs:3:45:3:46 | << | LeftShiftOperator | RelaxedShift.cs:1:18:1:56 | IShiftOperators<Number,String,Number> |
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| RelaxedShift.cs:5:45:5:46 | >> | RightShiftOperator | RelaxedShift.cs:1:18:1:56 | IShiftOperators<Number,String,Number> |
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| RelaxedShift.cs:7:45:7:47 | >>> | UnsignedRightShiftOperator | RelaxedShift.cs:1:18:1:56 | IShiftOperators<Number,String,Number> |
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binaryoperatorcalls
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| RelaxedShift.cs:24:19:24:28 | call to operator << | RelaxedShift.cs:12:35:12:36 | << | RelaxedShift.cs:24:19:24:21 | access to local variable n11 | RelaxedShift.cs:24:26:24:28 | "1" |
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| RelaxedShift.cs:27:19:27:28 | call to operator >> | RelaxedShift.cs:14:35:14:36 | >> | RelaxedShift.cs:27:19:27:21 | access to local variable n21 | RelaxedShift.cs:27:26:27:28 | "2" |
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| RelaxedShift.cs:30:19:30:29 | call to operator >>> | RelaxedShift.cs:16:35:16:37 | >>> | RelaxedShift.cs:30:19:30:21 | access to local variable n31 | RelaxedShift.cs:30:27:30:29 | "3" |

‎csharp/ql/test/library-tests/csharp11/relaxedShift.ql

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import csharp
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query predicate userdefinedoperators(BinaryOperator op, string qlclass, Type t) {
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op.getFile().getStem() = "RelaxedShift" and
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qlclass = op.getAPrimaryQlClass() and
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t = op.getDeclaringType() and
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op != op.getUnboundDeclaration()
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}
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query predicate binaryoperatorcalls(OperatorCall oc, BinaryOperator o, Expr left, Expr right) {
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oc.getFile().getStem() = "RelaxedShift" and
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o = oc.getTarget() and
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left = oc.getArgument(0) and
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right = oc.getArgument(1)
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}

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