8120internal sealed partial class BoundConstantPattern : BoundPattern 8157internal sealed partial class BoundDiscardPattern : BoundPattern 8197internal abstract partial class BoundObjectPattern : BoundPattern 8335internal sealed partial class BoundSlicePattern : BoundPattern 8374internal sealed partial class BoundITuplePattern : BoundPattern 8518internal sealed partial class BoundTypePattern : BoundPattern 8554internal sealed partial class BoundBinaryPattern : BoundPattern 8593internal sealed partial class BoundNegatedPattern : BoundPattern 8627internal sealed partial class BoundRelationalPattern : BoundPattern

39BoundPattern pattern = BindPattern(node.Pattern, expression.Type, permitDesignations: true, hasErrors, diagnostics, underIsPattern: true); 49BoundPattern pattern, 58bool negated = pattern.IsNegated(out var innerPattern); 175internal BoundPattern BindPattern( 201private BoundPattern BindParenthesizedPattern( 213private BoundPattern BindSlicePattern( 228BoundPattern? pattern = null; 270private ImmutableArray<BoundPattern> BindListPatternSubpatterns( 280var builder = ArrayBuilder<BoundPattern>.GetInstance(subpatterns.Count); 283BoundPattern boundPattern; 338ImmutableArray<BoundPattern> subpatterns = BindListPatternSubpatterns( 413private static BoundPattern BindDiscardPattern(DiscardPatternSyntax node, TypeSymbol inputType, BindingDiagnosticBag diagnostics) 419private BoundPattern BindConstantPatternWithFallbackToTypePattern( 428internal BoundPattern BindConstantPatternWithFallbackToTypePattern( 848private BoundPattern BindDeclarationPattern( 968private BoundPattern BindRecursivePattern( 1156BoundPattern pattern = BindVarDesignation(variable, objectType, permitDesignations, hasErrors: false, diagnostics); 1328private BoundPattern BindVarPattern( 1354private BoundPattern BindVarDesignation( 1435BoundPattern pattern = BindVarDesignation(variable, elementType, permitDesignations, isError, diagnostics); 1458BoundPattern pattern = BindVarDesignation(variable, elementType, permitDesignations, isError, diagnostics); 1514BoundPattern boundPattern = BindPattern(pattern, memberType, permitDesignations, hasErrors, diagnostics); 1622private BoundPattern BindTypePattern( 1635private BoundPattern BindRelationalPattern( 1728private BoundPattern BindUnaryPattern( 1738var subPattern = BindPattern(node.Pattern, inputType, permitDesignations, hasErrors, diagnostics, underIsPattern); 1742private BoundPattern BindBinaryPattern( 1764BoundPattern result = BindPattern(binaryPatternAndPermitDesignations.pat.Left, inputType, binaryPatternAndPermitDesignations.permitDesignations, hasErrors, diagnostics); 1785static BoundPattern bindBinaryPattern( 1786BoundPattern preboundLeft, 1801var right = binder.BindPattern(node.Right, inputType, permitDesignations, hasErrors, diagnostics); 1868var right = binder.BindPattern(node.Right, preboundLeft.NarrowedType, permitDesignations, hasErrors, diagnostics); 1875static void collectCandidates(BoundPattern pat, ArrayBuilder<TypeSymbol> candidates)

117BoundPattern pattern, 130BoundPattern pattern, 187BoundPattern pattern, 197BoundPattern pattern, 316BoundPattern pattern, 329BoundPattern pattern, 585BoundPattern pattern = recursive.Deconstruction[i].Pattern; 606BoundPattern pattern = recursive.Deconstruction[i].Pattern; 629BoundPattern pattern = subpattern.Pattern;

64BoundPattern pattern, 338BoundPattern pattern, 349var normalizedPattern = PatternNormalizer.Rewrite(pattern, rootIdentifier.Type); 363var normalizedNegatedPattern = PatternNormalizer.Rewrite(negated, rootIdentifier.Type); 384static void populateStateForCases(ArrayBuilder<BoundPattern> set, PooledHashSet<LabelSymbol> labelsToIgnore, 395foreach (BoundPattern pattern in set) 413static void analyze(BoundPattern pattern, ref readonly ReachabilityAnalysisContext context) 417var currentCases = ArrayBuilder<BoundPattern>.GetInstance(); 426static void analyzePattern(ArrayBuilder<BoundPattern> currentCases, BoundPattern pattern, Func<BoundPattern, BoundPattern>? wrapIntoParentAndPattern, ref readonly ReachabilityAnalysisContext context) 434static void analyzeBinary(ArrayBuilder<BoundPattern> currentCases, BoundBinaryPattern binaryPattern, Func<BoundPattern, BoundPattern>? wrapIntoParentAndPattern, ref readonly ReachabilityAnalysisContext context) 440var patterns = ArrayBuilder<BoundPattern>.GetInstance(); 448BoundPattern pattern = patterns[i]; 450BoundPattern wrappedPattern = wrapIntoParentAndPattern?.Invoke(pattern) ?? pattern; 476Func<BoundPattern, BoundPattern> newWrapIntoParentAndPattern = (BoundPattern newPattern) => 481var result = wrapIntoParentAndPattern?.Invoke(wrappedPattern) ?? wrappedPattern; 505static void checkReachability(ArrayBuilder<BoundPattern> orCases, ref readonly ReachabilityAnalysisContext context) 540static void addPatternsFromOrTree(BoundPattern pattern, ArrayBuilder<BoundPattern> builder) 620private Func<BoundPattern, BoundPattern>? _makeEvaluationSequenceOperand; 640private readonly BoundPattern? _operand; 651private OperandOrOperation(BoundPattern? operand, bool? disjunction, SyntaxNode? operationSyntax) 663public static OperandOrOperation CreateOperand(BoundPattern operand) 668public bool IsOperand([NotNullWhen(true)] out BoundPattern? operand) 707internal static BoundPattern Rewrite(BoundPattern pattern, TypeSymbol inputType) 719private BoundPattern GetResult(TypeSymbol inputType) 723var stack = ArrayBuilder<BoundPattern>.GetInstance(); 732var right = stack.Pop(); 733var left = stack.Pop(); 737else if (operandOrOperation.IsOperand(out BoundPattern? operand)) 762var result = stack.Single(); 767static TypeSymbol narrowedTypeForBinary(BoundPattern resultLeft, BoundPattern resultRight, bool resultDisjunction) 888private void TryPushOperand(BoundPattern pattern) 919public BoundPattern NegateIfNeeded(BoundPattern node) 970private static BoundPattern WithInputTypeCheckIfNeeded(BoundPattern pattern, TypeSymbol inputType) 1027BoundPattern typePattern = new BoundTypePattern(pattern.Syntax, 1079BoundPattern initialCheck; 1112_makeEvaluationSequenceOperand = (BoundPattern newPattern) => 1119BoundPattern newRecursive = new BoundRecursivePattern( 1147_makeEvaluationSequenceOperand = (BoundPattern newPattern) => 1154BoundPattern newRecursive = new BoundRecursivePattern( 1187private void VisitPatternAndCombine(SyntaxNode syntax, BoundPattern pattern, int startOfLeft) 1235_makeEvaluationSequenceOperand = (BoundPattern newPattern) => 1242BoundPattern newITuple = new BoundITuplePattern(newPattern.Syntax, ituplePattern.GetLengthMethod, 1286ImmutableArray<BoundPattern> equivalentDefaultPatterns = listPattern.Subpatterns.SelectAsArray(makeEquivalentDefaultPattern); 1298Func<BoundPattern, BoundPattern> makeListPattern = (BoundPattern newPattern) => 1303ImmutableArray<BoundPattern> newSubpatterns = equivalentDefaultPatterns.SetItem(i, newPattern); 1305BoundPattern newList = new BoundListPattern( 1319Func<BoundPattern, BoundPattern>? makeListPatternWithSlice = null; 1322makeListPatternWithSlice = (BoundPattern newPattern) => 1331BoundPattern newSlice = new BoundSlicePattern(newPattern.Syntax, newPattern, slice.IndexerAccess, 1334ImmutableArray<BoundPattern> newSubpatterns = equivalentDefaultPatterns.SetItem(i, newSlice); 1336BoundPattern newList = new BoundListPattern( 1381static BoundPattern makeEquivalentDefaultPattern(BoundPattern pattern)

50foreach (BoundPattern subpattern in subpatterns) 57if (slice.Pattern is BoundPattern slicePattern)

250BoundPattern pattern = sectionBinder.BindConstantPatternWithFallbackToTypePattern( 282BoundPattern pattern = sectionBinder.BindPattern( 296void reportIfConstantNamedUnderscore(BoundPattern pattern, ExpressionSyntax expression)

42BoundPattern pattern = armBinder.BindPattern(node.Pattern, switchGoverningType, permitDesignations: true, hasErrors, diagnostics);

16bool negated = this.Pattern.IsNegated(out var innerPattern);

13internal BoundListPattern WithSubpatterns(ImmutableArray<BoundPattern> subpatterns)

14internal bool IsNegated(out BoundPattern innerPattern)

9internal BoundPositionalSubpattern WithPattern(BoundPattern pattern)

9internal BoundPropertySubpattern WithPattern(BoundPattern pattern)

11internal BoundSlicePattern WithPattern(BoundPattern? pattern)

218if (node is BoundExpression or BoundPattern) 342BoundPattern child = node.Left; 367var left = (BoundPattern?)this.Visit(child); 373var right = (BoundPattern?)this.Visit(binary.Right);

202Debug.Assert(node is BoundExpression or BoundPattern);

73if (node is BoundExpression or BoundPattern) 88Debug.Assert(node is BoundExpression or BoundPattern); 152var rightOperands = ArrayBuilder<BoundPattern>.GetInstance(); 157BoundPattern? current = binary.Left;

152var leftChild = (BoundPattern)Visit(stack.Peek().Left); 161var right = (BoundPattern)Visit(currentBinary.Right);

2034BoundPattern pattern = lowestBoundNode as BoundPattern ?? highestBoundNode as BoundPattern ?? (highestBoundNode is BoundSubpattern sp ? sp.Pattern : null);

225var stack = ArrayBuilder<BoundPattern>.GetInstance(); 228BoundPattern currentPattern = binaryPattern.Left;

363if (node is BoundExpression or BoundPattern) 930bool negated = node.Pattern.IsNegated(out var pattern); 979static bool patternMatchesNull(BoundPattern pattern) 1029static bool? isBoolTest(BoundPattern pattern) 1102public virtual void VisitPattern(BoundPattern pattern)

1943public override void VisitPattern(BoundPattern pattern) 1953void assignPatternVariablesAndMarkReadFields(BoundPattern pattern, bool definitely = true) 2028foreach (BoundPattern p in pat.Subpatterns)

3708Debug.Assert(node is BoundExpression or BoundPattern);

98if (node is BoundExpression or BoundPattern)

26BoundPattern pattern) 155BoundPattern pattern)

50public override void VisitPattern(BoundPattern pattern) 69private void NoteDeclaredPatternVariables(BoundPattern pattern) 94foreach (var elementPattern in listPattern.Subpatterns)

4958public BoundSwitchExpressionArm(SyntaxNode syntax, ImmutableArray<LocalSymbol> locals, BoundPattern pattern, BoundExpression? whenClause, BoundExpression value, LabelSymbol label, bool hasErrors = false) 4975public BoundPattern Pattern { get; } 4983public BoundSwitchExpressionArm Update(ImmutableArray<LocalSymbol> locals, BoundPattern pattern, BoundExpression? whenClause, BoundExpression value, LabelSymbol label) 5745public BoundSwitchLabel(SyntaxNode syntax, LabelSymbol label, BoundPattern pattern, BoundExpression? whenClause, bool hasErrors = false) 5758public BoundPattern Pattern { get; } 5764public BoundSwitchLabel Update(LabelSymbol label, BoundPattern pattern, BoundExpression? whenClause) 8052public BoundIsPatternExpression(SyntaxNode syntax, BoundExpression expression, BoundPattern pattern, bool isNegated, BoundDecisionDag reachabilityDecisionDag, LabelSymbol whenTrueLabel, LabelSymbol whenFalseLabel, TypeSymbol? type, bool hasErrors = false) 8071public BoundPattern Pattern { get; } 8080public BoundIsPatternExpression Update(BoundExpression expression, BoundPattern pattern, bool isNegated, BoundDecisionDag reachabilityDecisionDag, LabelSymbol whenTrueLabel, LabelSymbol whenFalseLabel, TypeSymbol? type) 8293public BoundListPattern(SyntaxNode syntax, ImmutableArray<BoundPattern> subpatterns, bool hasSlice, BoundExpression? lengthAccess, BoundExpression? indexerAccess, BoundListPatternReceiverPlaceholder? receiverPlaceholder, BoundListPatternIndexPlaceholder? argumentPlaceholder, Symbol? variable, BoundExpression? variableAccess, TypeSymbol inputType, TypeSymbol narrowedType, bool hasErrors = false) 8313public ImmutableArray<BoundPattern> Subpatterns { get; } 8323public BoundListPattern Update(ImmutableArray<BoundPattern> subpatterns, bool hasSlice, BoundExpression? lengthAccess, BoundExpression? indexerAccess, BoundListPatternReceiverPlaceholder? receiverPlaceholder, BoundListPatternIndexPlaceholder? argumentPlaceholder, Symbol? variable, BoundExpression? variableAccess, TypeSymbol inputType, TypeSymbol narrowedType) 8337public BoundSlicePattern(SyntaxNode syntax, BoundPattern? pattern, BoundExpression? indexerAccess, BoundSlicePatternReceiverPlaceholder? receiverPlaceholder, BoundSlicePatternRangePlaceholder? argumentPlaceholder, TypeSymbol inputType, TypeSymbol narrowedType, bool hasErrors = false) 8354public BoundPattern? Pattern { get; } 8362public BoundSlicePattern Update(BoundPattern? pattern, BoundExpression? indexerAccess, BoundSlicePatternReceiverPlaceholder? receiverPlaceholder, BoundSlicePatternRangePlaceholder? argumentPlaceholder, TypeSymbol inputType, TypeSymbol narrowedType) 8416protected BoundSubpattern(BoundKind kind, SyntaxNode syntax, BoundPattern pattern, bool hasErrors = false) 8425public BoundPattern Pattern { get; } 8430public BoundPositionalSubpattern(SyntaxNode syntax, Symbol? symbol, BoundPattern pattern, bool hasErrors = false) 8444public BoundPositionalSubpattern Update(Symbol? symbol, BoundPattern pattern) 8458public BoundPropertySubpattern(SyntaxNode syntax, BoundPropertySubpatternMember? member, bool isLengthOrCount, BoundPattern pattern, bool hasErrors = false) 8474public BoundPropertySubpattern Update(BoundPropertySubpatternMember? member, bool isLengthOrCount, BoundPattern pattern) 8556public BoundBinaryPattern(SyntaxNode syntax, bool disjunction, BoundPattern left, BoundPattern right, TypeSymbol inputType, TypeSymbol narrowedType, bool hasErrors = false) 8575public BoundPattern Left { get; } 8576public BoundPattern Right { get; } 8581public BoundBinaryPattern Update(bool disjunction, BoundPattern left, BoundPattern right, TypeSymbol inputType, TypeSymbol narrowedType) 8595public BoundNegatedPattern(SyntaxNode syntax, BoundPattern negated, TypeSymbol inputType, TypeSymbol narrowedType, bool hasErrors = false) 8610public BoundPattern Negated { get; } 8615public BoundNegatedPattern Update(BoundPattern negated, TypeSymbol inputType, TypeSymbol narrowedType) 11776BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 11928BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 12354BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 12396ImmutableArray<BoundPattern> subpatterns = this.VisitList(node.Subpatterns); 12408BoundPattern? pattern = (BoundPattern?)this.Visit(node.Pattern); 12428BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 12434BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 12453BoundPattern left = (BoundPattern)this.Visit(node.Left); 12454BoundPattern right = (BoundPattern)this.Visit(node.Right); 12461BoundPattern negated = (BoundPattern)this.Visit(node.Negated); 13949BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 15015BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 15074ImmutableArray<BoundPattern> subpatterns = this.VisitList(node.Subpatterns); 15087BoundPattern? pattern = (BoundPattern?)this.Visit(node.Pattern); 15107BoundPattern pattern = (BoundPattern)this.Visit(node.Pattern); 15130BoundPattern negated = (BoundPattern)this.Visit(node.Negated);