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提交 b77e2645 编写于 作者: C CyrusNajmabadi
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Convert if to switch.

上级 e9954ffe
隐藏空白更改
内联 并排
Showing with 56 addition and 75 deletion
src/Workspaces/CSharp/Portable/Extensions/ContextQuery/SyntaxTokenExtensions.cs
浏览文件 @ b77e2645
......@@ -101,92 +101,73 @@ public static bool IsBeginningOfStatementContext(this SyntaxToken token)
// for ( ; ; Foo(), |
if (token.Kind() == SyntaxKind.OpenBraceToken &&
token.Parent.IsKind(SyntaxKind.Block))
switch (token.Kind())
{
return true;
}
if (token.Kind() == SyntaxKind.SemicolonToken)
{
var statement = token.GetAncestor<StatementSyntax>();
if (statement != null && !statement.IsParentKind(SyntaxKind.GlobalStatement) &&
statement.GetLastToken(includeZeroWidth: true) == token)
{
case SyntaxKind.OpenBraceToken when token.Parent.IsKind(SyntaxKind.Block):
return true;
}
}
if (token.Kind() == SyntaxKind.CloseBraceToken &&
token.Parent.IsKind(SyntaxKind.Block))
{
if (token.Parent.Parent is StatementSyntax)
{
// Most blocks that are the child of statement are places
// that we can follow with another statement. i.e.:
// if { }
// while () { }
// There are two exceptions.
// try {}
// do {}
if (!token.Parent.IsParentKind(SyntaxKind.TryStatement) &&
!token.Parent.IsParentKind(SyntaxKind.DoStatement))
case SyntaxKind.SemicolonToken:
var statement = token.GetAncestor<StatementSyntax>();
return statement != null && !statement.IsParentKind(SyntaxKind.GlobalStatement) &&
statement.GetLastToken(includeZeroWidth: true) == token;
case SyntaxKind.CloseBraceToken:
if (token.Parent.IsKind(SyntaxKind.Block))
{
return true;
if (token.Parent.Parent is StatementSyntax)
{
// Most blocks that are the child of statement are places
// that we can follow with another statement. i.e.:
// if { }
// while () { }
// There are two exceptions.
// try {}
// do {}
if (!token.Parent.IsParentKind(SyntaxKind.TryStatement) &&
!token.Parent.IsParentKind(SyntaxKind.DoStatement))
{
return true;
}
}
else if (
token.Parent.IsParentKind(SyntaxKind.ElseClause) ||
token.Parent.IsParentKind(SyntaxKind.FinallyClause) ||
token.Parent.IsParentKind(SyntaxKind.CatchClause) ||
token.Parent.IsParentKind(SyntaxKind.SwitchSection))
{
return true;
}
}
}
else if (
token.Parent.IsParentKind(SyntaxKind.ElseClause) ||
token.Parent.IsParentKind(SyntaxKind.FinallyClause) ||
token.Parent.IsParentKind(SyntaxKind.CatchClause) ||
token.Parent.IsParentKind(SyntaxKind.SwitchSection))
{
return true;
}
}
if (token.Kind() == SyntaxKind.CloseBraceToken &&
token.Parent.IsKind(SyntaxKind.SwitchStatement))
{
return true;
}
if (token.Parent.IsKind(SyntaxKind.SwitchStatement))
{
return true;
}
if (token.Kind() == SyntaxKind.ColonToken)
{
if (token.Parent.IsKind(SyntaxKind.CaseSwitchLabel,
SyntaxKind.DefaultSwitchLabel,
SyntaxKind.CasePatternSwitchLabel,
SyntaxKind.LabeledStatement))
{
return true;
}
}
return false;
if (token.Kind() == SyntaxKind.DoKeyword &&
token.Parent.IsKind(SyntaxKind.DoStatement))
{
return true;
}
case SyntaxKind.ColonToken:
return token.Parent.IsKind(SyntaxKind.CaseSwitchLabel,
SyntaxKind.DefaultSwitchLabel,
SyntaxKind.CasePatternSwitchLabel,
SyntaxKind.LabeledStatement);
if (token.Kind() == SyntaxKind.CloseParenToken)
{
var parent = token.Parent;
if (parent.IsKind(SyntaxKind.ForStatement) ||
parent.IsKind(SyntaxKind.ForEachStatement) ||
parent.IsKind(SyntaxKind.ForEachVariableStatement) ||
parent.IsKind(SyntaxKind.WhileStatement) ||
parent.IsKind(SyntaxKind.IfStatement) ||
parent.IsKind(SyntaxKind.LockStatement) ||
parent.IsKind(SyntaxKind.UsingStatement) ||
parent.IsKind(SyntaxKind.FixedStatement))
{
case SyntaxKind.DoKeyword when token.Parent.IsKind(SyntaxKind.DoStatement):
return true;
}
}
if (token.Kind() == SyntaxKind.ElseKeyword)
{
return true;
case SyntaxKind.CloseParenToken:
var parent = token.Parent;
return parent.IsKind(SyntaxKind.ForStatement) ||
parent.IsKind(SyntaxKind.ForEachStatement) ||
parent.IsKind(SyntaxKind.ForEachVariableStatement) ||
parent.IsKind(SyntaxKind.WhileStatement) ||
parent.IsKind(SyntaxKind.IfStatement) ||
parent.IsKind(SyntaxKind.LockStatement) ||
parent.IsKind(SyntaxKind.UsingStatement) ||
parent.IsKind(SyntaxKind.FixedStatement);
case SyntaxKind.ElseKeyword:
return true;
}
return false;
......
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