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提交 5e5e969c 编写于 作者: A AlekseyTs
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A Declaration Expression should not be treated as a primary-expression by the... 

A Declaration Expression should not be treated as a primary-expression by the language parser. Fixes https://roslyn.codeplex.com/workitem/18. This is a port of https://roslyn.codeplex.com/SourceControl/changeset/d5f905aefda0b465c8e32d990430f5da5ecdeb45. (changeset 1251223)
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Showing with 299 addition and 64 deletion
Src/Compilers/CSharp/Source/Parser/LanguageParser.cs
浏览文件 @ 5e5e969c
......@@ -7777,7 +7777,7 @@ private static bool IsDeclarationModifier(SyntaxKind kind)
private ExpressionStatementSyntax ParseExpressionStatement()
{
return ParseExpressionStatement(this.ParseExpression(allowDeclarationExpressionAtTheBeginning: false));
return ParseExpressionStatement(this.ParseExpression(allowDeclarationExpression: false));
}
private ExpressionStatementSyntax ParseExpressionStatement(ExpressionSyntax expression)
......@@ -7797,9 +7797,9 @@ private ExpressionStatementSyntax ParseExpressionStatement(ExpressionSyntax expr
return syntaxFactory.ExpressionStatement(expression, semicolon);
}
public ExpressionSyntax ParseExpression(bool allowDeclarationExpressionAtTheBeginning = true)
public ExpressionSyntax ParseExpression(bool allowDeclarationExpression = true)
{
return this.ParseSubExpression(0, allowDeclarationExpressionAtTheBeginning);
return this.ParseSubExpression(0, allowDeclarationExpression);
}
private bool IsPossibleExpression()
......@@ -8022,8 +8022,13 @@ private bool IsAwaitExpression()
return false;
}
private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarationExpressionAtTheBeginning = true, bool contextRequiresVariable = false)
private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarationExpression, bool contextRequiresVariable = false)
{
if (Options.LanguageVersion != LanguageVersion.Experimental)
{
allowDeclarationExpression = false;
}
ExpressionSyntax leftOperand = null;
uint newPrecedence = 0;
SyntaxKind opKind = SyntaxKind.None;
......@@ -8048,7 +8053,7 @@ private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarati
opKind = SyntaxFacts.GetPrefixUnaryExpression(tk);
newPrecedence = GetPrecedence(opKind);
var opToken = this.EatToken();
var operand = this.ParseSubExpression(newPrecedence);
var operand = this.ParseSubExpression(newPrecedence, allowDeclarationExpression: false);
leftOperand = syntaxFactory.PrefixUnaryExpression(opKind, opToken, operand);
}
else if (IsAwaitExpression())
......@@ -8057,7 +8062,7 @@ private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarati
newPrecedence = GetPrecedence(opKind);
var awaitToken = this.EatContextualToken(SyntaxKind.AwaitKeyword);
awaitToken = CheckFeatureAvailability(awaitToken, MessageID.IDS_FeatureAsync);
var operand = this.ParseSubExpression(newPrecedence);
var operand = this.ParseSubExpression(newPrecedence, allowDeclarationExpression: false);
leftOperand = syntaxFactory.PrefixUnaryExpression(opKind, awaitToken, operand);
}
else if (this.IsQueryExpression(mayBeVariableDeclaration: false, mayBeMemberDeclaration: false))
......@@ -8073,10 +8078,21 @@ private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarati
skipped = this.AddError(skipped, ErrorCode.ERR_InvalidExprTerm, this.CurrentToken.Text);
leftOperand = AddTrailingSkippedSyntax(this.CreateMissingIdentifierName(), skipped);
}
else if (allowDeclarationExpression &&
(IsPredefinedType(this.CurrentToken.Kind) || (this.CurrentToken.Kind == SyntaxKind.IdentifierToken &&
this.IsTrueIdentifier() &&
!(this.CurrentToken.ContextualKind == SyntaxKind.AsyncKeyword &&
this.PeekToken(1).Kind == SyntaxKind.DelegateKeyword) &&
!this.IsPossibleLambdaExpression(precedence))) &&
IsPossibleDeclarationExpression(contextRequiresVariable))
{
// According to the grammar, a declaration expression cannot be followed by a binary operator or be a condition for a '?' operator. Return.
return ParseDeclarationExpression();
}
else
{
// Not a unary operator - get a primary expression.
leftOperand = this.ParseTerm(precedence, allowDeclarationExpressionAtTheBeginning, contextRequiresVariable);
leftOperand = this.ParseTerm(precedence, contextRequiresVariable);
}
while (true)
......@@ -8136,7 +8152,9 @@ private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarati
}
else
{
leftOperand = syntaxFactory.BinaryExpression(opKind, leftOperand, opToken, this.ParseSubExpression(newPrecedence));
leftOperand = syntaxFactory.BinaryExpression(opKind, leftOperand, opToken,
this.ParseSubExpression(newPrecedence,
allowDeclarationExpression: SyntaxFacts.IsAssignmentExpressionOperatorToken(opToken.Kind)));
}
}
......@@ -8154,23 +8172,18 @@ private ExpressionSyntax ParseSubExpression(uint precedence, bool allowDeclarati
{
var questionToken = this.EatToken();
var colonLeft = this.ParseSubExpression(nullCoalescingPrecedence - 1);
var colonLeft = this.ParseSubExpression(nullCoalescingPrecedence - 1, allowDeclarationExpression: true);
var colon = this.EatToken(SyntaxKind.ColonToken);
var colonRight = this.ParseSubExpression(nullCoalescingPrecedence - 1);
var colonRight = this.ParseSubExpression(nullCoalescingPrecedence - 1, allowDeclarationExpression: true);
leftOperand = syntaxFactory.ConditionalExpression(leftOperand, questionToken, colonLeft, colon, colonRight);
}
return leftOperand;
}
private ExpressionSyntax ParseTerm(uint precedence, bool allowDeclarationExpression, bool contextRequiresVariable)
private ExpressionSyntax ParseTerm(uint precedence, bool contextRequiresVariable)
{
if (Options.LanguageVersion != LanguageVersion.Experimental)
{
allowDeclarationExpression = false;
}
ExpressionSyntax expr = null;
var tk = this.CurrentToken.Kind;
......@@ -8214,10 +8227,6 @@ private ExpressionSyntax ParseTerm(uint precedence, bool allowDeclarationExpress
{
expr = this.ParseLambdaExpression();
}
else if (allowDeclarationExpression && IsPossibleDeclarationExpression(contextRequiresVariable))
{
expr = ParseDeclarationExpression();
}
else
{
expr = this.ParseAliasQualifiedName(NameOptions.InExpression);
......@@ -8259,12 +8268,6 @@ private ExpressionSyntax ParseTerm(uint precedence, bool allowDeclarationExpress
// check for intrinsic type followed by '.'
if (IsPredefinedType(tk))
{
if (allowDeclarationExpression && IsPossibleDeclarationExpression(contextRequiresVariable))
{
expr = ParseDeclarationExpression();
}
else
{
expr = syntaxFactory.PredefinedType(this.EatToken());
if (this.CurrentToken.Kind != SyntaxKind.DotToken || tk == SyntaxKind.VoidKeyword)
......@@ -8272,7 +8275,6 @@ private ExpressionSyntax ParseTerm(uint precedence, bool allowDeclarationExpress
expr = this.AddError(expr, ErrorCode.ERR_InvalidExprTerm, SyntaxFacts.GetText(tk));
}
}
}
else
{
expr = this.CreateMissingIdentifierName();
......@@ -8359,7 +8361,7 @@ private bool IsPossibleDeclarationExpression(bool contextRequiresVariable)
try
{
var nullCoalescingPrecedence = GetPrecedence(SyntaxKind.CoalesceExpression);
var colonLeft = this.ParseSubExpression(nullCoalescingPrecedence - 1);
var colonLeft = this.ParseSubExpression(nullCoalescingPrecedence - 1, allowDeclarationExpression: true);
if (colonLeft.Kind != SyntaxKind.DeclarationExpression && this.CurrentToken.Kind == SyntaxKind.ColonToken)
{
......@@ -8694,7 +8696,7 @@ private ArgumentSyntax ParseArgumentExpression(bool isIndexer)
}
else
{
expression = this.ParseSubExpression(0, contextRequiresVariable: refOrOutKeyword != null);
expression = this.ParseSubExpression(0, allowDeclarationExpression: true, contextRequiresVariable: refOrOutKeyword != null);
}
return syntaxFactory.Argument(nameColon, refOrOutKeyword, expression);
......@@ -8736,7 +8738,7 @@ private MakeRefExpressionSyntax ParseMakeRefExpression()
{
var keyword = this.EatToken();
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var expr = this.ParseSubExpression(0);
var expr = this.ParseSubExpression(0, allowDeclarationExpression: true);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
return syntaxFactory.MakeRefExpression(keyword, openParen, expr, closeParen);
......@@ -8746,7 +8748,7 @@ private RefTypeExpressionSyntax ParseRefTypeExpression()
{
var keyword = this.EatToken();
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var expr = this.ParseSubExpression(0);
var expr = this.ParseSubExpression(0, allowDeclarationExpression: true);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
return syntaxFactory.RefTypeExpression(keyword, openParen, expr, closeParen);
......@@ -8759,7 +8761,7 @@ private CheckedExpressionSyntax ParseCheckedOrUncheckedExpression()
var kind = (checkedOrUnchecked.Kind == SyntaxKind.CheckedKeyword) ? SyntaxKind.CheckedExpression : SyntaxKind.UncheckedExpression;
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var expr = this.ParseSubExpression(0);
var expr = this.ParseSubExpression(0, allowDeclarationExpression: true);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
return syntaxFactory.CheckedExpression(kind, checkedOrUnchecked, openParen, expr, closeParen);
......@@ -8769,7 +8771,7 @@ private RefValueExpressionSyntax ParseRefValueExpression()
{
var @refvalue = this.EatToken(SyntaxKind.RefValueKeyword);
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var expr = this.ParseSubExpression(0);
var expr = this.ParseSubExpression(0, allowDeclarationExpression: true);
var comma = this.EatToken(SyntaxKind.CommaToken);
var type = this.ParseType(false);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
......@@ -8922,7 +8924,7 @@ private ExpressionSyntax ParseCastOrParenExpressionOrLambda(uint precedence, boo
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var type = this.ParseType(false);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
var expr = this.ParseSubExpression(GetPrecedence(SyntaxKind.CastExpression));
var expr = this.ParseSubExpression(GetPrecedence(SyntaxKind.CastExpression), allowDeclarationExpression: false);
return syntaxFactory.CastExpression(openParen, type, closeParen, expr);
}
}
......@@ -8937,7 +8939,7 @@ private ExpressionSyntax ParseCastOrParenExpressionOrLambda(uint precedence, boo
{
this.Reset(ref resetPoint);
var openParen = this.EatToken(SyntaxKind.OpenParenToken);
var expression = this.ParseSubExpression(0, contextRequiresVariable: contextRequiresVariable);
var expression = this.ParseSubExpression(0, allowDeclarationExpression: true, contextRequiresVariable: contextRequiresVariable);
var closeParen = this.EatToken(SyntaxKind.CloseParenToken);
return syntaxFactory.ParenthesizedExpression(openParen, expression, closeParen);
}
......
Src/Compilers/CSharp/Test/Semantic/Semantics/DeclarationExpressionsTests.cs
浏览文件 @ 5e5e969c
......@@ -280,16 +280,16 @@ public class Cls
{
public static void Main()
{
for (int i = (int)double j = 0; (j = i) < 2; i=(int)j+1)
for (int i = (int)(double j = 0); (j = i) < 2; i=(int)j+1)
{
System.Console.WriteLine(j);
}
for (int i = (int)double j = 10; (j = i) < 12; i=(int)j+1)
for (int i = (int)(double j = 10); (j = i) < 12; i=(int)j+1)
System.Console.WriteLine(j + (int k = 5 + i) + k);
int ii;
for (ii = (int)double j = 10; (j = ii) < 12; ii=(int)j+1)
for (ii = (int)(double j = 10); (j = ii) < 12; ii=(int)j+1)
System.Console.WriteLine(j + (int k = 5 + ii) + k);
}
}";
......@@ -322,7 +322,7 @@ public static void Main()
j = 3;
k = 4;
for (int i = l; i < int l = 12; i++) {}
for (int i = l; i < (int l = 12); i++) {}
for (int i = 0; i < m; i = (int m = 12) + m) {}
......@@ -4038,7 +4038,7 @@ Task M2()
}
[Fact]
public void BugCodePlex_18_1()
public void BugCodePlex_18_01()
{
var text = @"
public class Cls
......@@ -4073,42 +4073,30 @@ .maxstack 4
}
[Fact]
public void BugCodePlex_18_2()
public void BugCodePlex_18_02()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = int[] y = { } = new [] { 1 };
var x = int[] y = { } = null;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
CompileAndVerify(compilation).VerifyDiagnostics().VerifyIL("Cls.Main",
@"{
// Code size 21 (0x15)
.maxstack 4
.locals init (int[] V_0, //x
int[] V_1) //y
IL_0000: ldc.i4.0
IL_0001: newarr ""int""
IL_0006: stloc.1
IL_0007: ldc.i4.1
IL_0008: newarr ""int""
IL_000d: dup
IL_000e: ldc.i4.0
IL_000f: ldc.i4.1
IL_0010: stelem.i4
IL_0011: dup
IL_0012: stloc.1
IL_0013: stloc.0
IL_0014: ret
}");
compilation.VerifyDiagnostics(
// (6,31): error CS1002: ; expected
// var x = int[] y = { } = null;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "=").WithLocation(6, 31),
// (6,31): error CS1525: Invalid expression term '='
// var x = int[] y = { } = null;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "=").WithArguments("=").WithLocation(6, 31)
);
}
[Fact]
public void BugCodePlex_18_3()
public void BugCodePlex_18_03()
{
var text = @"
public class Cls
......@@ -4137,6 +4125,245 @@ .maxstack 1
}");
}
[Fact]
public void BugCodePlex_18_04()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = (object) int[] y = { };
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,26): error CS1525: Invalid expression term 'int'
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "int").WithArguments("int").WithLocation(6, 26),
// (6,30): error CS0443: Syntax error; value expected
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_ValueExpected, "]").WithLocation(6, 30),
// (6,32): error CS1002: ; expected
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "y").WithLocation(6, 32),
// (6,36): error CS1525: Invalid expression term '{'
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "{").WithArguments("{").WithLocation(6, 36),
// (6,36): error CS1002: ; expected
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "{").WithLocation(6, 36),
// (6,32): error CS0103: The name 'y' does not exist in the current context
// var x = (object) int[] y = { };
Diagnostic(ErrorCode.ERR_NameNotInContext, "y").WithArguments("y").WithLocation(6, 32)
);
}
[Fact]
public void BugCodePlex_18_05()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = int[] y = { } ? 1 : 2;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,31): error CS1003: Syntax error, ',' expected
// var x = int[] y = { } ? 1 : 2;
Diagnostic(ErrorCode.ERR_SyntaxError, "?").WithArguments(",", "?").WithLocation(6, 31),
// (6,33): error CS1002: ; expected
// var x = int[] y = { } ? 1 : 2;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "1").WithLocation(6, 33),
// (6,35): error CS1002: ; expected
// var x = int[] y = { } ? 1 : 2;
Diagnostic(ErrorCode.ERR_SemicolonExpected, ":").WithLocation(6, 35),
// (6,35): error CS1513: } expected
// var x = int[] y = { } ? 1 : 2;
Diagnostic(ErrorCode.ERR_RbraceExpected, ":").WithLocation(6, 35),
// (6,37): error CS0201: Only assignment, call, increment, decrement, and new object expressions can be used as a statement
// var x = int[] y = { } ? 1 : 2;
Diagnostic(ErrorCode.ERR_IllegalStatement, "2").WithLocation(6, 37)
);
}
[Fact]
public void BugCodePlex_18_06()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = int[] y = { } ?? new int[] { 1 };
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,31): error CS1002: ; expected
// var x = int[] y = { } ?? new int[] { 1 };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "??").WithLocation(6, 31),
// (6,31): error CS1525: Invalid expression term '??'
// var x = int[] y = { } ?? new int[] { 1 };
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "??").WithArguments("??").WithLocation(6, 31)
);
}
[Fact]
public void BugCodePlex_18_07()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = int y++;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,22): error CS1002: ; expected
// var x = int y++;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "++").WithLocation(6, 22),
// (6,24): error CS1525: Invalid expression term ';'
// var x = int y++;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(6, 24),
// (6,17): error CS0165: Use of unassigned local variable 'y'
// var x = int y++;
Diagnostic(ErrorCode.ERR_UseDefViolation, "int y").WithArguments("y").WithLocation(6, 17)
);
}
[Fact]
public void BugCodePlex_18_08()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = ++ int y;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,20): error CS1525: Invalid expression term 'int'
// var x = ++ int y;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "int").WithArguments("int").WithLocation(6, 20),
// (6,24): error CS1002: ; expected
// var x = ++ int y;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "y").WithLocation(6, 24),
// (6,24): error CS0103: The name 'y' does not exist in the current context
// var x = ++ int y;
Diagnostic(ErrorCode.ERR_NameNotInContext, "y").WithArguments("y").WithLocation(6, 24),
// (6,24): error CS0201: Only assignment, call, increment, decrement, and new object expressions can be used as a statement
// var x = ++ int y;
Diagnostic(ErrorCode.ERR_IllegalStatement, "y").WithLocation(6, 24)
);
}
[Fact]
public void BugCodePlex_18_09()
{
var text = @"
public class Cls
{
public static void Main()
{}
public async void Test()
{
var x = await int y = 2;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (9,23): error CS1525: Invalid expression term 'int'
// var x = await int y = 2;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "int").WithArguments("int").WithLocation(9, 23),
// (9,27): error CS1002: ; expected
// var x = await int y = 2;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "y").WithLocation(9, 27),
// (9,27): error CS0103: The name 'y' does not exist in the current context
// var x = await int y = 2;
Diagnostic(ErrorCode.ERR_NameNotInContext, "y").WithArguments("y").WithLocation(9, 27)
);
}
[Fact]
public void BugCodePlex_18_10()
{
var text = @"
public class Cls
{
public static void Main()
{
var x = 3 + int y = 2;
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (6,21): error CS1525: Invalid expression term 'int'
// var x = 3 + int y = 2;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "int").WithArguments("int").WithLocation(6, 21),
// (6,25): error CS1002: ; expected
// var x = 3 + int y = 2;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "y").WithLocation(6, 25),
// (6,25): error CS0103: The name 'y' does not exist in the current context
// var x = 3 + int y = 2;
Diagnostic(ErrorCode.ERR_NameNotInContext, "y").WithArguments("y").WithLocation(6, 25)
);
}
[Fact]
public void BugCodePlex_18_11()
{
var text = @"
public class Cls
{
public static void Main()
{
int[] y = { };
var x = y ?? int[] z = { 1 };
}
}";
var compilation = CreateCompilationWithMscorlib(text, compOptions: TestOptions.Exe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.Experimental));
compilation.VerifyDiagnostics(
// (7,22): error CS1525: Invalid expression term 'int'
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "int").WithArguments("int").WithLocation(7, 22),
// (7,26): error CS0443: Syntax error; value expected
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_ValueExpected, "]").WithLocation(7, 26),
// (7,28): error CS1002: ; expected
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "z").WithLocation(7, 28),
// (7,32): error CS1525: Invalid expression term '{'
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "{").WithArguments("{").WithLocation(7, 32),
// (7,32): error CS1002: ; expected
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "{").WithLocation(7, 32),
// (7,36): error CS1002: ; expected
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_SemicolonExpected, "}").WithLocation(7, 36),
// (7,28): error CS0103: The name 'z' does not exist in the current context
// var x = y ?? int[] z = { 1 };
Diagnostic(ErrorCode.ERR_NameNotInContext, "z").WithArguments("z").WithLocation(7, 28)
);
}
[Fact, WorkItem(2)]
public void InLambda_01()
{
......@@ -4217,7 +4444,7 @@ static void Main()
}
[Fact, WorkItem(2)]
public void InALambda_04()
public void InLambda_04()
{
var text = @"
using System;
......
Src/Compilers/CSharp/Test/Semantic/Semantics/SemanticErrorTests.cs
浏览文件 @ 5e5e969c
......@@ -12786,6 +12786,12 @@ public void CS1525ERR_InvalidExprTerm()
// (4,25): error CS1001: Identifier expected
// bool b = string is string;
Diagnostic(ErrorCode.ERR_IdentifierExpected, "is").WithLocation(4, 25),
// (4,25): error CS1002: ; expected
// bool b = string is string;
Diagnostic(ErrorCode.ERR_SemicolonExpected, "is").WithLocation(4, 25),
// (4,25): error CS1525: Invalid expression term 'is'
// bool b = string is string;
Diagnostic(ErrorCode.ERR_InvalidExprTerm, "is").WithArguments("is").WithLocation(4, 25),
// (4,18): error CS0165: Use of unassigned local variable ''
// bool b = string is string;
Diagnostic(ErrorCode.ERR_UseDefViolation, "string ").WithArguments("").WithLocation(4, 18)
......
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