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C# extractor: extract catch(Ex) type as TypeAccess instead of TypeMention
This commit is contained in:
copilot-swe-agent[bot]
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parent
f0576046b1
commit
5310accfba
@@ -25,7 +25,7 @@ namespace Semmle.Extraction.CSharp.Entities.Statements
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{
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var type = Type.Create(Context, Context.GetType(Stmt.Declaration!.Type));
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trapFile.catch_type(this, type.TypeRef, true);
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TypeMention.Create(Context, Stmt.Declaration!.Type, this, type);
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Expression.Create(Context, Stmt.Declaration!.Type, this, 0);
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}
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else // A catch clause of the form 'catch { ... }'
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{
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@@ -995,6 +995,23 @@ class SpecificCatchClause extends CatchClause {
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/** Gets the local variable declaration of this catch clause, if any. */
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LocalVariableDeclExpr getVariableDeclExpr() { result.getParent() = this }
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/**
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* Gets the type access of this catch clause, if it has no variable declaration.
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*
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* For example, the type access in
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*
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* ```csharp
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* try { ... }
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* catch (IOException) { ... }
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* ```
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*
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* is `IOException`.
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*/
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TypeAccess getTypeAccess() {
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not exists(this.getVariableDeclExpr()) and
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result = this.getChild(0)
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}
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override string toString() { result = "catch (...) {...}" }
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override string getAPrimaryQlClass() { result = "SpecificCatchClause" }
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@@ -90,6 +90,7 @@ module Ast implements AstSig<Location> {
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private AstNode getStmtChild0(Stmt s, int i) {
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not s instanceof FixedStmt and
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not s instanceof UsingBlockStmt and
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not skipControlFlow(result) and
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result = s.getChild(i)
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or
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s =
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@@ -0,0 +1,4 @@
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---
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category: minorAnalysis
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---
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* The C# extractor now extracts the exception type in a `catch(ExceptionType)` clause (without a variable) as a `TypeAccess` expression instead of a `TypeMention`. The new `SpecificCatchClause.getTypeAccess()` predicate provides access to this expression.
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@@ -101,7 +101,8 @@ csharp6.cs:
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# 32| 0: [IntLiteral] 2
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# 32| 0: [IntLiteral] 1
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# 34| 1: [SpecificCatchClause] catch (...) {...}
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# 34| 0: [TypeMention] IndexOutOfRangeException
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# 34| 0: [TypeAccess] access to type IndexOutOfRangeException
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# 34| 0: [TypeMention] IndexOutOfRangeException
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# 35| 1: [BlockStmt] {...}
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# 34| 2: [EQExpr] ... == ...
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# 34| 0: [PropertyCall] access to property Value
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@@ -1 +1 @@
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| statements.cs:234:13:237:13 | checked {...} | statements.cs:235:13:237:13 | {...} |
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| statements.cs:250:13:253:13 | checked {...} | statements.cs:251:13:253:13 | {...} |
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@@ -1,3 +1,3 @@
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| fixed.cs:3:7:3:11 | {...} | fixed.cs:3:7:3:11 | Fixed |
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| statements.cs:8:11:8:15 | {...} | statements.cs:8:11:8:15 | Class |
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| statements.cs:244:15:244:25 | {...} | statements.cs:244:15:244:25 | AccountLock |
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| statements.cs:260:15:260:25 | {...} | statements.cs:260:15:260:25 | AccountLock |
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@@ -1 +1 @@
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| statements.cs:273:21:273:31 | MainLabeled | statements.cs:276:9:276:13 | Label: |
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| statements.cs:289:21:289:31 | MainLabeled | statements.cs:292:9:292:13 | Label: |
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@@ -1 +1 @@
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| statements.cs:249:17:256:17 | lock (...) {...} | statements.cs:249:23:249:26 | this access | statements.cs:250:17:256:17 | {...} |
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| statements.cs:265:17:272:17 | lock (...) {...} | statements.cs:265:23:265:26 | this access | statements.cs:266:17:272:17 | {...} |
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@@ -1 +1 @@
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| statements.cs:285:13:288:13 | lock (...) {...} | statements.cs:285:19:285:28 | access to field lockObject | Lock | statements.cs:286:13:288:13 | {...} |
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| statements.cs:301:13:304:13 | lock (...) {...} | statements.cs:301:19:301:28 | access to field lockObject | Lock | statements.cs:302:13:304:13 | {...} |
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@@ -603,115 +603,147 @@ statements.cs:
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# 223| -1: [TypeAccess] access to type Console
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# 223| 0: [TypeMention] Console
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# 223| 0: [StringLiteralUtf16] "Exception"
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# 231| 27: [Method] MainCheckedUnchecked
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# 231| 27: [Method] MainTryCatchNoVar
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# 231| -1: [TypeMention] Void
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#-----| 2: (Parameters)
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# 231| 0: [Parameter] args
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# 231| -1: [TypeMention] String[]
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# 231| 1: [TypeMention] string
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# 232| 4: [BlockStmt] {...}
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# 233| 0: [LocalVariableDeclStmt] ... ...;
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# 233| 0: [LocalVariableDeclAndInitExpr] Int32 i = ...
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# 233| -1: [TypeMention] int
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# 233| 0: [LocalVariableAccess] access to local variable i
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# 233| 1: [MemberConstantAccess] access to constant MaxValue
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# 233| -1: [TypeAccess] access to type Int32
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# 233| 0: [TypeMention] int
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# 234| 1: [CheckedStmt] checked {...}
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# 235| 0: [BlockStmt] {...}
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# 236| 0: [ExprStmt] ...;
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# 236| 0: [MethodCall] call to method WriteLine
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# 236| -1: [TypeAccess] access to type Console
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# 236| 0: [TypeMention] Console
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# 236| 0: [AddExpr] ... + ...
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# 236| 0: [LocalVariableAccess] access to local variable i
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# 236| 1: [IntLiteral] 1
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# 238| 2: [UncheckedStmt] unchecked {...}
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# 239| 0: [BlockStmt] {...}
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# 240| 0: [ExprStmt] ...;
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# 240| 0: [MethodCall] call to method WriteLine
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# 240| -1: [TypeAccess] access to type Console
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# 240| 0: [TypeMention] Console
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# 240| 0: [AddExpr] ... + ...
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# 240| 0: [LocalVariableAccess] access to local variable i
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# 240| 1: [IntLiteral] 1
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# 244| 28: [Class] AccountLock
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# 246| 6: [Field] balance
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# 246| -1: [TypeMention] decimal
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# 247| 7: [Method] Withdraw
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# 247| -1: [TypeMention] Void
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# 233| 0: [TryStmt] try {...} ...
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# 234| 0: [BlockStmt] {...}
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# 235| 0: [ExprStmt] ...;
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# 235| 0: [MethodCall] call to method WriteLine
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# 235| -1: [TypeAccess] access to type Console
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# 235| 0: [TypeMention] Console
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# 235| 0: [StringLiteralUtf16] "try"
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# 237| 1: [SpecificCatchClause] catch (...) {...}
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# 237| 0: [TypeAccess] access to type IOException
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# 237| 0: [TypeMention] IOException
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# 238| 1: [BlockStmt] {...}
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# 239| 0: [ExprStmt] ...;
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# 239| 0: [MethodCall] call to method WriteLine
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# 239| -1: [TypeAccess] access to type Console
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# 239| 0: [TypeMention] Console
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# 239| 0: [StringLiteralUtf16] "catch (IOException) without variable"
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# 241| 2: [SpecificCatchClause] catch (...) {...}
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# 241| 0: [TypeAccess] access to type Exception
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# 241| 0: [TypeMention] Exception
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# 242| 1: [BlockStmt] {...}
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# 243| 0: [ExprStmt] ...;
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# 243| 0: [MethodCall] call to method WriteLine
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# 243| -1: [TypeAccess] access to type Console
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# 243| 0: [TypeMention] Console
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# 243| 0: [StringLiteralUtf16] "catch (Exception) without variable"
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# 247| 28: [Method] MainCheckedUnchecked
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# 247| -1: [TypeMention] Void
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# 248| 4: [BlockStmt] {...}
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# 249| 0: [LocalVariableDeclStmt] ... ...;
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# 249| 0: [LocalVariableDeclAndInitExpr] Int32 i = ...
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# 249| -1: [TypeMention] int
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# 249| 0: [LocalVariableAccess] access to local variable i
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# 249| 1: [MemberConstantAccess] access to constant MaxValue
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# 249| -1: [TypeAccess] access to type Int32
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# 249| 0: [TypeMention] int
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# 250| 1: [CheckedStmt] checked {...}
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# 251| 0: [BlockStmt] {...}
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# 252| 0: [ExprStmt] ...;
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# 252| 0: [MethodCall] call to method WriteLine
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# 252| -1: [TypeAccess] access to type Console
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# 252| 0: [TypeMention] Console
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# 252| 0: [AddExpr] ... + ...
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# 252| 0: [LocalVariableAccess] access to local variable i
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# 252| 1: [IntLiteral] 1
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# 254| 2: [UncheckedStmt] unchecked {...}
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# 255| 0: [BlockStmt] {...}
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# 256| 0: [ExprStmt] ...;
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# 256| 0: [MethodCall] call to method WriteLine
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# 256| -1: [TypeAccess] access to type Console
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# 256| 0: [TypeMention] Console
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# 256| 0: [AddExpr] ... + ...
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# 256| 0: [LocalVariableAccess] access to local variable i
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# 256| 1: [IntLiteral] 1
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# 260| 29: [Class] AccountLock
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# 262| 6: [Field] balance
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# 262| -1: [TypeMention] decimal
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# 263| 7: [Method] Withdraw
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# 263| -1: [TypeMention] Void
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#-----| 2: (Parameters)
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# 247| 0: [Parameter] amount
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# 247| -1: [TypeMention] decimal
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# 248| 4: [BlockStmt] {...}
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# 249| 0: [LockStmt] lock (...) {...}
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# 249| 0: [ThisAccess] this access
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# 250| 1: [BlockStmt] {...}
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# 251| 0: [IfStmt] if (...) ...
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# 251| 0: [GTExpr] ... > ...
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# 251| 0: [ParameterAccess] access to parameter amount
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# 251| 1: [FieldAccess] access to field balance
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# 252| 1: [BlockStmt] {...}
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# 253| 0: [ThrowStmt] throw ...;
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# 253| 0: [ObjectCreation] object creation of type Exception
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# 253| -1: [TypeMention] Exception
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# 253| 0: [StringLiteralUtf16] "Insufficient funds"
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# 255| 1: [ExprStmt] ...;
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# 255| 0: [AssignSubExpr] ... -= ...
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# 255| 0: [FieldAccess] access to field balance
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# 255| 1: [ParameterAccess] access to parameter amount
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# 260| 29: [Method] MainUsing
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# 260| -1: [TypeMention] Void
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# 261| 4: [BlockStmt] {...}
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# 262| 0: [UsingBlockStmt] using (...) {...}
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# 262| -1: [LocalVariableDeclAndInitExpr] TextWriter w = ...
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# 262| -1: [TypeMention] TextWriter
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# 262| 0: [LocalVariableAccess] access to local variable w
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# 262| 1: [MethodCall] call to method CreateText
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# 262| -1: [TypeAccess] access to type File
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# 262| 0: [TypeMention] File
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# 262| 0: [StringLiteralUtf16] "test.txt"
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# 263| 1: [BlockStmt] {...}
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# 264| 0: [ExprStmt] ...;
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# 264| 0: [MethodCall] call to method WriteLine
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# 264| -1: [LocalVariableAccess] access to local variable w
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# 264| 0: [StringLiteralUtf16] "Line one"
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# 265| 1: [ExprStmt] ...;
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# 265| 0: [MethodCall] call to method WriteLine
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# 265| -1: [LocalVariableAccess] access to local variable w
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# 265| 0: [StringLiteralUtf16] "Line two"
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# 266| 2: [ExprStmt] ...;
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# 266| 0: [MethodCall] call to method WriteLine
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# 266| -1: [LocalVariableAccess] access to local variable w
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# 266| 0: [StringLiteralUtf16] "Line three"
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# 268| 1: [UsingBlockStmt] using (...) {...}
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# 268| 0: [MethodCall] call to method CreateText
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# 268| -1: [TypeAccess] access to type File
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# 268| 0: [TypeMention] File
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# 268| 0: [StringLiteralUtf16] "test.txt"
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# 269| 1: [BlockStmt] {...}
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# 273| 30: [Method] MainLabeled
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# 273| -1: [TypeMention] Void
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# 274| 4: [BlockStmt] {...}
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# 275| 0: [GotoLabelStmt] goto ...;
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# 276| 1: [LabelStmt] Label:
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# 277| 2: [LocalVariableDeclStmt] ... ...;
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# 277| 0: [LocalVariableDeclAndInitExpr] Int32 x = ...
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# 277| -1: [TypeMention] int
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# 277| 0: [LocalVariableAccess] access to local variable x
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# 277| 1: [IntLiteral] 23
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# 278| 3: [ExprStmt] ...;
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# 278| 0: [AssignExpr] ... = ...
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# 278| 0: [LocalVariableAccess] access to local variable x
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# 278| 1: [IntLiteral] 9
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# 281| 31: [Field] lockObject
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# 281| -1: [TypeMention] Lock
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# 281| 1: [ObjectCreation] object creation of type Lock
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# 281| 0: [TypeMention] Lock
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# 283| 32: [Method] LockMethod
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# 283| -1: [TypeMention] Void
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# 284| 4: [BlockStmt] {...}
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# 285| 0: [LockStmt] lock (...) {...}
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# 285| 0: [FieldAccess] access to field lockObject
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# 286| 1: [BlockStmt] {...}
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# 287| 0: [ExprStmt] ...;
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# 287| 0: [MethodCall] call to method WriteLine
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# 287| -1: [TypeAccess] access to type Console
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# 287| 0: [TypeMention] Console
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# 287| 0: [StringLiteralUtf16] "Locked"
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# 263| 0: [Parameter] amount
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# 263| -1: [TypeMention] decimal
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# 264| 4: [BlockStmt] {...}
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# 265| 0: [LockStmt] lock (...) {...}
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# 265| 0: [ThisAccess] this access
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# 266| 1: [BlockStmt] {...}
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# 267| 0: [IfStmt] if (...) ...
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# 267| 0: [GTExpr] ... > ...
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# 267| 0: [ParameterAccess] access to parameter amount
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# 267| 1: [FieldAccess] access to field balance
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# 268| 1: [BlockStmt] {...}
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# 269| 0: [ThrowStmt] throw ...;
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# 269| 0: [ObjectCreation] object creation of type Exception
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# 269| -1: [TypeMention] Exception
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# 269| 0: [StringLiteralUtf16] "Insufficient funds"
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# 271| 1: [ExprStmt] ...;
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# 271| 0: [AssignSubExpr] ... -= ...
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# 271| 0: [FieldAccess] access to field balance
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# 271| 1: [ParameterAccess] access to parameter amount
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# 276| 30: [Method] MainUsing
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# 276| -1: [TypeMention] Void
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# 277| 4: [BlockStmt] {...}
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# 278| 0: [UsingBlockStmt] using (...) {...}
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# 278| -1: [LocalVariableDeclAndInitExpr] TextWriter w = ...
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# 278| -1: [TypeMention] TextWriter
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# 278| 0: [LocalVariableAccess] access to local variable w
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# 278| 1: [MethodCall] call to method CreateText
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# 278| -1: [TypeAccess] access to type File
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# 278| 0: [TypeMention] File
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# 278| 0: [StringLiteralUtf16] "test.txt"
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# 279| 1: [BlockStmt] {...}
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# 280| 0: [ExprStmt] ...;
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# 280| 0: [MethodCall] call to method WriteLine
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# 280| -1: [LocalVariableAccess] access to local variable w
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# 280| 0: [StringLiteralUtf16] "Line one"
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# 281| 1: [ExprStmt] ...;
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# 281| 0: [MethodCall] call to method WriteLine
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# 281| -1: [LocalVariableAccess] access to local variable w
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# 281| 0: [StringLiteralUtf16] "Line two"
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# 282| 2: [ExprStmt] ...;
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# 282| 0: [MethodCall] call to method WriteLine
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# 282| -1: [LocalVariableAccess] access to local variable w
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# 282| 0: [StringLiteralUtf16] "Line three"
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# 284| 1: [UsingBlockStmt] using (...) {...}
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# 284| 0: [MethodCall] call to method CreateText
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# 284| -1: [TypeAccess] access to type File
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# 284| 0: [TypeMention] File
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# 284| 0: [StringLiteralUtf16] "test.txt"
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# 285| 1: [BlockStmt] {...}
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# 289| 31: [Method] MainLabeled
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# 289| -1: [TypeMention] Void
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# 290| 4: [BlockStmt] {...}
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# 291| 0: [GotoLabelStmt] goto ...;
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# 292| 1: [LabelStmt] Label:
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# 293| 2: [LocalVariableDeclStmt] ... ...;
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# 293| 0: [LocalVariableDeclAndInitExpr] Int32 x = ...
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# 293| -1: [TypeMention] int
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# 293| 0: [LocalVariableAccess] access to local variable x
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# 293| 1: [IntLiteral] 23
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# 294| 3: [ExprStmt] ...;
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# 294| 0: [AssignExpr] ... = ...
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# 294| 0: [LocalVariableAccess] access to local variable x
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# 294| 1: [IntLiteral] 9
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# 297| 32: [Field] lockObject
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# 297| -1: [TypeMention] Lock
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# 297| 1: [ObjectCreation] object creation of type Lock
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# 297| 0: [TypeMention] Lock
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# 299| 33: [Method] LockMethod
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# 299| -1: [TypeMention] Void
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# 300| 4: [BlockStmt] {...}
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# 301| 0: [LockStmt] lock (...) {...}
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# 301| 0: [FieldAccess] access to field lockObject
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# 302| 1: [BlockStmt] {...}
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# 303| 0: [ExprStmt] ...;
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# 303| 0: [MethodCall] call to method WriteLine
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# 303| -1: [TypeAccess] access to type Console
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# 303| 0: [TypeMention] Console
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# 303| 0: [StringLiteralUtf16] "Locked"
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@@ -17,9 +17,13 @@
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| statements.cs:218:13:220:13 | {...} | statements.cs:219:17:219:45 | ...; |
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| statements.cs:222:13:224:13 | {...} | statements.cs:223:17:223:47 | ...; |
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| statements.cs:226:13:228:13 | {...} | statements.cs:227:17:227:47 | ...; |
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| statements.cs:235:13:237:13 | {...} | statements.cs:236:17:236:41 | ...; |
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| statements.cs:239:13:241:13 | {...} | statements.cs:240:17:240:41 | ...; |
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| statements.cs:248:13:257:13 | {...} | statements.cs:249:17:256:17 | lock (...) {...} |
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| statements.cs:252:21:254:21 | {...} | statements.cs:253:25:253:66 | throw ...; |
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| statements.cs:284:9:289:9 | {...} | statements.cs:285:13:288:13 | lock (...) {...} |
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| statements.cs:286:13:288:13 | {...} | statements.cs:287:17:287:44 | ...; |
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| statements.cs:232:9:245:9 | {...} | statements.cs:233:13:244:13 | try {...} ... |
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| statements.cs:234:13:236:13 | {...} | statements.cs:235:17:235:41 | ...; |
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| statements.cs:238:13:240:13 | {...} | statements.cs:239:17:239:74 | ...; |
|
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| statements.cs:242:13:244:13 | {...} | statements.cs:243:17:243:72 | ...; |
|
||||
| statements.cs:251:13:253:13 | {...} | statements.cs:252:17:252:41 | ...; |
|
||||
| statements.cs:255:13:257:13 | {...} | statements.cs:256:17:256:41 | ...; |
|
||||
| statements.cs:264:13:273:13 | {...} | statements.cs:265:17:272:17 | lock (...) {...} |
|
||||
| statements.cs:268:21:270:21 | {...} | statements.cs:269:25:269:66 | throw ...; |
|
||||
| statements.cs:300:9:305:9 | {...} | statements.cs:301:13:304:13 | lock (...) {...} |
|
||||
| statements.cs:302:13:304:13 | {...} | statements.cs:303:17:303:44 | ...; |
|
||||
|
||||
@@ -1,2 +1,2 @@
|
||||
| statements.cs:246:21:246:27 | balance |
|
||||
| statements.cs:281:31:281:40 | lockObject |
|
||||
| statements.cs:262:21:262:27 | balance |
|
||||
| statements.cs:297:31:297:40 | lockObject |
|
||||
|
||||
@@ -0,0 +1,2 @@
|
||||
| statements.cs:237:13:240:13 | catch (...) {...} | statements.cs:237:20:237:30 | access to type IOException | file:///home/runner/work/codeql/codeql/csharp/extractor-pack/tools/linux64/System.Private.CoreLib.dll:0:0:0:0 | IOException |
|
||||
| statements.cs:241:13:244:13 | catch (...) {...} | statements.cs:241:20:241:28 | access to type Exception | file:///home/runner/work/codeql/codeql/csharp/extractor-pack/tools/linux64/System.Private.CoreLib.dll:0:0:0:0 | Exception |
|
||||
13
csharp/ql/test/library-tests/statements/TryCatch9.ql
Normal file
13
csharp/ql/test/library-tests/statements/TryCatch9.ql
Normal file
@@ -0,0 +1,13 @@
|
||||
/**
|
||||
* @name Test for try catches without variable
|
||||
*/
|
||||
|
||||
import csharp
|
||||
|
||||
from Method m, TryStmt s, SpecificCatchClause c, TypeAccess ta
|
||||
where
|
||||
s.getEnclosingCallable() = m and
|
||||
m.getName() = "MainTryCatchNoVar" and
|
||||
s.getACatchClause() = c and
|
||||
c.getTypeAccess() = ta
|
||||
select c, ta, ta.getTarget()
|
||||
@@ -1 +1 @@
|
||||
| statements.cs:238:13:241:13 | unchecked {...} | statements.cs:239:13:241:13 | {...} |
|
||||
| statements.cs:254:13:257:13 | unchecked {...} | statements.cs:255:13:257:13 | {...} |
|
||||
|
||||
@@ -1 +1 @@
|
||||
| statements.cs:260:21:260:29 | MainUsing |
|
||||
| statements.cs:276:21:276:29 | MainUsing |
|
||||
|
||||
@@ -1 +1 @@
|
||||
| statements.cs:260:21:260:29 | MainUsing | statements.cs:262:31:262:31 | w |
|
||||
| statements.cs:276:21:276:29 | MainUsing | statements.cs:278:31:278:31 | w |
|
||||
|
||||
@@ -228,6 +228,22 @@ namespace Statements
|
||||
}
|
||||
}
|
||||
|
||||
static void MainTryCatchNoVar(string[] args)
|
||||
{
|
||||
try
|
||||
{
|
||||
Console.WriteLine("try");
|
||||
}
|
||||
catch (IOException)
|
||||
{
|
||||
Console.WriteLine("catch (IOException) without variable");
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
Console.WriteLine("catch (Exception) without variable");
|
||||
}
|
||||
}
|
||||
|
||||
static void MainCheckedUnchecked()
|
||||
{
|
||||
int i = int.MaxValue;
|
||||
|
||||
Reference in New Issue
Block a user