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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Web.Razor.Generator;
using System.Web.Razor.Parser;
using System.Web.Razor.Parser.SyntaxTree;
using System.Web.Razor.Resources;
using System.Web.Razor.Test.Framework;
using System.Web.Razor.Text;
using System.Web.Razor.Tokenizer.Symbols;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Razor.Test.Parser.CSharp
{
public class CSharpBlockTest : CsHtmlCodeParserTestBase
{
[Fact]
public void ParseBlockMethodThrowsArgNullExceptionOnNullContext()
{
// Arrange
CSharpCodeParser parser = new CSharpCodeParser();
// Act and Assert
Assert.Throws<InvalidOperationException>(() => parser.ParseBlock(), RazorResources.Parser_Context_Not_Set);
}
[Fact]
public void BalancingBracketsIgnoresStringLiteralCharactersAndBracketsInsideSingleLineComments()
{
SingleSpanBlockTest(@"if(foo) {
// bar } "" baz '
zoop();
}", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void NestedCodeBlockWithAtCausesError()
{
ParseBlockTest("if (true) { @if(false) { } }",
new StatementBlock(
Factory.Code("if (true) { ").AsStatement(),
new StatementBlock(
Factory.CodeTransition(),
Factory.Code("if(false) { }").AsStatement()
),
Factory.Code(" }").AsStatement()),
new RazorError(
String.Format(RazorResources.ParseError_Unexpected_Keyword_After_At,
"if"),
new SourceLocation(13, 0, 13)));
}
[Fact]
public void BalancingBracketsIgnoresStringLiteralCharactersAndBracketsInsideBlockComments()
{
SingleSpanBlockTest(
@"if(foo) {
/* bar } "" */ ' baz } '
zoop();
}", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsForKeyword()
{
SingleSpanBlockTest("for(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsForeachKeyword()
{
SingleSpanBlockTest("foreach(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsWhileKeyword()
{
SingleSpanBlockTest("while(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsUsingKeywordFollowedByParen()
{
SingleSpanBlockTest("using(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsUsingsNestedWithinOtherBlocks()
{
SingleSpanBlockTest("if(foo) { using(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); } }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsIfKeywordWithNoElseBranches()
{
SingleSpanBlockTest("if(int i = 0; i < 10; new Foo { Bar = \"baz\" }) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockAllowsEmptyBlockStatement()
{
SingleSpanBlockTest("if(false) { }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockTerminatesParenBalancingAtEOF()
{
ImplicitExpressionTest("Html.En(code()", "Html.En(code()",
AcceptedCharacters.Any,
new RazorError(
String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF,
"(", ")"),
new SourceLocation(8, 0, 8)));
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenIfAndElseClause()
{
SingleSpanBlockTest("if(foo) { bar(); } /* Foo */ /* Bar */ else { baz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenIfAndElseClause()
{
RunRazorCommentBetweenClausesTest("if(foo) { bar(); } ", " else { baz(); }", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenElseIfAndElseClause()
{
SingleSpanBlockTest("if(foo) { bar(); } else if(bar) { baz(); } /* Foo */ /* Bar */ else { biz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenElseIfAndElseClause()
{
RunRazorCommentBetweenClausesTest("if(foo) { bar(); } else if(bar) { baz(); } ", " else { baz(); }", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenIfAndElseIfClause()
{
SingleSpanBlockTest("if(foo) { bar(); } /* Foo */ /* Bar */ else if(bar) { baz(); }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenIfAndElseIfClause()
{
RunRazorCommentBetweenClausesTest("if(foo) { bar(); } ", " else if(bar) { baz(); }");
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenIfAndElseClause()
{
SingleSpanBlockTest(@"if(foo) { bar(); }
// Foo
// Bar
else { baz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenElseIfAndElseClause()
{
SingleSpanBlockTest(@"if(foo) { bar(); } else if(bar) { baz(); }
// Foo
// Bar
else { biz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenIfAndElseIfClause()
{
SingleSpanBlockTest(@"if(foo) { bar(); }
// Foo
// Bar
else if(bar) { baz(); }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockParsesElseIfBranchesOfIfStatement()
{
const string ifStatement = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
const string elseIfBranch = @" else if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""bar } baz"");
}";
const string document = ifStatement + elseIfBranch;
SingleSpanBlockTest(document, BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockParsesMultipleElseIfBranchesOfIfStatement()
{
const string ifStatement = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
const string elseIfBranch = @" else if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""bar } baz"");
}";
const string document = ifStatement + elseIfBranch + elseIfBranch + elseIfBranch + elseIfBranch;
SingleSpanBlockTest(document, BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockParsesMultipleElseIfBranchesOfIfStatementFollowedByOneElseBranch()
{
const string ifStatement = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
const string elseIfBranch = @" else if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""bar } baz"");
}";
const string elseBranch = @" else { Debug.WriteLine(@""bar } baz""); }";
const string document = ifStatement + elseIfBranch + elseIfBranch + elseBranch;
SingleSpanBlockTest(document, BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockStopsParsingCodeAfterElseBranch()
{
const string ifStatement = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
const string elseIfBranch = @" else if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""bar } baz"");
}";
const string elseBranch = @" else { Debug.WriteLine(@""bar } baz""); }";
const string document = ifStatement + elseIfBranch + elseBranch + elseIfBranch;
const string expected = ifStatement + elseIfBranch + elseBranch;
ParseBlockTest(document, new StatementBlock(Factory.Code(expected).AsStatement().Accepts(AcceptedCharacters.None)));
}
[Fact]
public void ParseBlockStopsParsingIfIfStatementNotFollowedByElse()
{
const string document = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
SingleSpanBlockTest(document, BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockAcceptsElseIfWithNoCondition()
{
// We don't want to be a full C# parser - If the else if is missing it's condition, the C# compiler can handle that, we have all the info we need to keep parsing
const string ifBranch = @"if(int i = 0; i < 10; new Foo { Bar = ""baz"" }) {
Debug.WriteLine(@""foo } bar"");
}";
const string elseIfBranch = @" else if { foo(); }";
const string document = ifBranch + elseIfBranch;
SingleSpanBlockTest(document, BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockCorrectlyParsesDoWhileBlock()
{
SingleSpanBlockTest("do { var foo = bar; } while(foo != bar);", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockCorrectlyParsesDoWhileBlockMissingSemicolon()
{
SingleSpanBlockTest("do { var foo = bar; } while(foo != bar)", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockCorrectlyParsesDoWhileBlockMissingWhileCondition()
{
SingleSpanBlockTest("do { var foo = bar; } while", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockCorrectlyParsesDoWhileBlockMissingWhileConditionWithSemicolon()
{
SingleSpanBlockTest("do { var foo = bar; } while;", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockCorrectlyParsesDoWhileBlockMissingWhileClauseEntirely()
{
SingleSpanBlockTest("do { var foo = bar; } narf;", "do { var foo = bar; }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenDoAndWhileClause()
{
SingleSpanBlockTest("do { var foo = bar; } /* Foo */ /* Bar */ while(true);", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenDoAndWhileClause()
{
SingleSpanBlockTest(@"do { var foo = bar; }
// Foo
// Bar
while(true);", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenDoAndWhileClause()
{
RunRazorCommentBetweenClausesTest("do { var foo = bar; } ", " while(true);", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockCorrectlyParsesMarkupInDoWhileBlock()
{
ParseBlockTest("@do { var foo = bar; <p>Foo</p> foo++; } while (foo<bar>);",
new StatementBlock(
Factory.CodeTransition(),
Factory.Code("do { var foo = bar;").AsStatement(),
new MarkupBlock(
Factory.Markup(" <p>Foo</p> ").Accepts(AcceptedCharacters.None)
),
Factory.Code("foo++; } while (foo<bar>);").AsStatement().Accepts(AcceptedCharacters.None)
));
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsSwitchKeyword()
{
SingleSpanBlockTest(@"switch(foo) {
case 0:
break;
case 1:
{
break;
}
case 2:
return;
default:
return;
}", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSkipsParenthesisedExpressionAndThenBalancesBracesIfFirstIdentifierIsLockKeyword()
{
SingleSpanBlockTest("lock(foo) { Debug.WriteLine(@\"foo } bar\"); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockHasErrorsIfNamespaceImportMissingSemicolon()
{
NamespaceImportTest("using Foo.Bar.Baz", " Foo.Bar.Baz", acceptedCharacters: AcceptedCharacters.NonWhiteSpace | AcceptedCharacters.WhiteSpace, location: new SourceLocation(17, 0, 17));
}
[Fact]
public void ParseBlockHasErrorsIfNamespaceAliasMissingSemicolon()
{
NamespaceImportTest("using Foo.Bar.Baz = FooBarBaz", " Foo.Bar.Baz = FooBarBaz", acceptedCharacters: AcceptedCharacters.NonWhiteSpace | AcceptedCharacters.WhiteSpace, location: new SourceLocation(29, 0, 29));
}
[Fact]
public void ParseBlockParsesNamespaceImportWithSemicolonForUsingKeywordIfIsInValidFormat()
{
NamespaceImportTest("using Foo.Bar.Baz;", " Foo.Bar.Baz", AcceptedCharacters.NonWhiteSpace | AcceptedCharacters.WhiteSpace);
}
[Fact]
public void ParseBlockDoesntCaptureWhitespaceAfterUsing()
{
ParseBlockTest("using Foo ",
new DirectiveBlock(
Factory.Code("using Foo")
.AsNamespaceImport(" Foo", CSharpCodeParser.UsingKeywordLength)
.Accepts(AcceptedCharacters.NonWhiteSpace | AcceptedCharacters.WhiteSpace)));
}
[Fact]
public void ParseBlockParsesNamespaceAliasWithSemicolonForUsingKeywordIfIsInValidFormat()
{
NamespaceImportTest("using FooBarBaz = FooBarBaz;", " FooBarBaz = FooBarBaz", AcceptedCharacters.NonWhiteSpace | AcceptedCharacters.WhiteSpace);
}
[Fact]
public void ParseBlockTerminatesUsingKeywordAtEOFAndOutputsFileCodeBlock()
{
SingleSpanBlockTest("using ", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockTerminatesSingleLineCommentAtEndOfFile()
{
const string document = "foreach(var f in Foo) { // foo bar baz";
SingleSpanBlockTest(document, document, BlockType.Statement, SpanKind.Code,
new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "foreach", '}', '{'), SourceLocation.Zero));
}
[Fact]
public void ParseBlockTerminatesBlockCommentAtEndOfFile()
{
const string document = "foreach(var f in Foo) { /* foo bar baz";
SingleSpanBlockTest(document, document, BlockType.Statement, SpanKind.Code,
new RazorError(String.Format(RazorResources.ParseError_BlockComment_Not_Terminated), 24, 0, 24),
new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "foreach", '}', '{'), SourceLocation.Zero));
}
[Fact]
public void ParseBlockTerminatesSingleSlashAtEndOfFile()
{
const string document = "foreach(var f in Foo) { / foo bar baz";
SingleSpanBlockTest(document, document, BlockType.Statement, SpanKind.Code,
new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "foreach", '}', '{'), SourceLocation.Zero));
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenTryAndFinallyClause()
{
SingleSpanBlockTest("try { bar(); } /* Foo */ /* Bar */ finally { baz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenTryAndFinallyClause()
{
RunRazorCommentBetweenClausesTest("try { bar(); } ", " finally { biz(); }", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenCatchAndFinallyClause()
{
SingleSpanBlockTest("try { bar(); } catch(bar) { baz(); } /* Foo */ /* Bar */ finally { biz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenCatchAndFinallyClause()
{
RunRazorCommentBetweenClausesTest("try { bar(); } catch(bar) { baz(); } ", " finally { biz(); }", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsBlockCommentBetweenTryAndCatchClause()
{
SingleSpanBlockTest("try { bar(); } /* Foo */ /* Bar */ catch(bar) { baz(); }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsRazorCommentBetweenTryAndCatchClause()
{
RunRazorCommentBetweenClausesTest("try { bar(); }", " catch(bar) { baz(); }");
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenTryAndFinallyClause()
{
SingleSpanBlockTest(@"try { bar(); }
// Foo
// Bar
finally { baz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenCatchAndFinallyClause()
{
SingleSpanBlockTest(@"try { bar(); } catch(bar) { baz(); }
// Foo
// Bar
finally { biz(); }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsLineCommentBetweenTryAndCatchClause()
{
SingleSpanBlockTest(@"try { bar(); }
// Foo
// Bar
catch(bar) { baz(); }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsTryStatementWithNoAdditionalClauses()
{
SingleSpanBlockTest("try { var foo = new { } }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsMarkupWithinTryClause()
{
RunSimpleWrappedMarkupTest("try {", " <p>Foo</p> ", "}");
}
[Fact]
public void ParseBlockSupportsTryStatementWithOneCatchClause()
{
SingleSpanBlockTest("try { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsMarkupWithinCatchClause()
{
RunSimpleWrappedMarkupTest("try { var foo = new { } } catch(Foo Bar Baz) {", " <p>Foo</p> ", "}");
}
[Fact]
public void ParseBlockSupportsTryStatementWithMultipleCatchClause()
{
SingleSpanBlockTest("try { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsExceptionLessCatchClauses()
{
SingleSpanBlockTest("try { var foo = new { } } catch { var foo = new { } }", BlockType.Statement, SpanKind.Code);
}
[Fact]
public void ParseBlockSupportsMarkupWithinAdditionalCatchClauses()
{
RunSimpleWrappedMarkupTest("try { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } } catch(Foo Bar Baz) { var foo = new { } } catch(Foo Bar Baz) {", " <p>Foo</p> ", "}");
}
[Fact]
public void ParseBlockSupportsTryStatementWithFinallyClause()
{
SingleSpanBlockTest("try { var foo = new { } } finally { var foo = new { } }", BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockSupportsMarkupWithinFinallyClause()
{
RunSimpleWrappedMarkupTest("try { var foo = new { } } finally {", " <p>Foo</p> ", "}", acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockStopsParsingCatchClausesAfterFinallyBlock()
{
string expectedContent = "try { var foo = new { } } finally { var foo = new { } }";
SingleSpanBlockTest(expectedContent + " catch(Foo Bar Baz) { }", expectedContent, BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockDoesNotAllowMultipleFinallyBlocks()
{
string expectedContent = "try { var foo = new { } } finally { var foo = new { } }";
SingleSpanBlockTest(expectedContent + " finally { }", expectedContent, BlockType.Statement, SpanKind.Code, acceptedCharacters: AcceptedCharacters.None);
}
[Fact]
public void ParseBlockAcceptsTrailingDotIntoImplicitExpressionWhenEmbeddedInCode()
{
// Arrange
ParseBlockTest(@"if(foo) { @foo. }",
new StatementBlock(
Factory.Code("if(foo) { ").AsStatement(),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.Code("foo.")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: true)
.Accepts(AcceptedCharacters.NonWhiteSpace)
),
Factory.Code(" }").AsStatement()
));
}
[Fact]
public void ParseBlockParsesExpressionOnSwitchCharacterFollowedByOpenParen()
{
// Arrange
ParseBlockTest(@"if(foo) { @(foo + bar) }",
new StatementBlock(
Factory.Code("if(foo) { ").AsStatement(),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.MetaCode("(").Accepts(AcceptedCharacters.None),
Factory.Code("foo + bar").AsExpression(),
Factory.MetaCode(")").Accepts(AcceptedCharacters.None)
),
Factory.Code(" }").AsStatement()
));
}
[Fact]
public void ParseBlockParsesExpressionOnSwitchCharacterFollowedByIdentifierStart()
{
// Arrange
ParseBlockTest(@"if(foo) { @foo[4].bar() }",
new StatementBlock(
Factory.Code("if(foo) { ").AsStatement(),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.Code("foo[4].bar()")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: true)
.Accepts(AcceptedCharacters.NonWhiteSpace)
),
Factory.Code(" }").AsStatement()
));
}
[Fact]
public void ParseBlockTreatsDoubleAtSignAsEscapeSequenceIfAtStatementStart()
{
// Arrange
ParseBlockTest(@"if(foo) { @@class.Foo() }",
new StatementBlock(
Factory.Code("if(foo) { ").AsStatement(),
Factory.Code("@").Hidden(),
Factory.Code("@class.Foo() }").AsStatement()
));
}
[Fact]
public void ParseBlockTreatsAtSignsAfterFirstPairAsPartOfCSharpStatement()
{
// Arrange
ParseBlockTest(@"if(foo) { @@@@class.Foo() }",
new StatementBlock(
Factory.Code("if(foo) { ").AsStatement(),
Factory.Code("@").Hidden(),
Factory.Code("@@@class.Foo() }").AsStatement()
));
}
[Fact]
public void ParseBlockDoesNotParseMarkupStatementOrExpressionOnSwitchCharacterNotFollowedByOpenAngleOrColon()
{
// Arrange
ParseBlockTest("if(foo) { @\"Foo\".ToString(); }",
new StatementBlock(
Factory.Code("if(foo) { @\"Foo\".ToString(); }").AsStatement()));
}
[Fact]
public void ParsersCanNestRecursively()
{
// Arrange
ParseBlockTest(@"foreach(var c in db.Categories) {
<div>
<h1>@c.Name</h1>
<ul>
@foreach(var p in c.Products) {
<li><a href=""@Html.ActionUrl(""Products"", ""Detail"", new { id = p.Id })"">@p.Name</a></li>
}
</ul>
</div>
}",
new StatementBlock(
Factory.Code("foreach(var c in db.Categories) {\r\n").AsStatement(),
new MarkupBlock(
Factory.Markup(" <div>\r\n <h1>"),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.Code("c.Name")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords)
.Accepts(AcceptedCharacters.NonWhiteSpace)),
Factory.Markup("</h1>\r\n <ul>\r\n"),
new StatementBlock(
Factory.Code(@" ").AsStatement(),
Factory.CodeTransition(),
Factory.Code("foreach(var p in c.Products) {\r\n").AsStatement(),
new MarkupBlock(
Factory.Markup(" <li><a"),
new MarkupBlock(new AttributeBlockCodeGenerator("href", new LocationTagged<string>(" href=\"", 193, 5, 30), new LocationTagged<string>("\"", 256, 5, 93)),
Factory.Markup(" href=\"").With(SpanCodeGenerator.Null),
new MarkupBlock(new DynamicAttributeBlockCodeGenerator(new LocationTagged<string>(String.Empty, 200, 5, 37), 200, 5, 37),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.Code("Html.ActionUrl(\"Products\", \"Detail\", new { id = p.Id })")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords)
.Accepts(AcceptedCharacters.NonWhiteSpace))),
Factory.Markup("\"").With(SpanCodeGenerator.Null)),
Factory.Markup(">"),
new ExpressionBlock(
Factory.CodeTransition(),
Factory.Code("p.Name")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords)
.Accepts(AcceptedCharacters.NonWhiteSpace)),
Factory.Markup("</a></li>\r\n").Accepts(AcceptedCharacters.None)),
Factory.Code(" }\r\n").AsStatement().Accepts(AcceptedCharacters.None)),
Factory.Markup(" </ul>\r\n </div>\r\n")
.Accepts(AcceptedCharacters.None)),
Factory.Code(" }").AsStatement().Accepts(AcceptedCharacters.None)));
}
private void RunRazorCommentBetweenClausesTest(string preComment, string postComment, AcceptedCharacters acceptedCharacters = AcceptedCharacters.Any)
{
ParseBlockTest(preComment + "@* Foo *@ @* Bar *@" + postComment,
new StatementBlock(
Factory.Code(preComment).AsStatement(),
new CommentBlock(
Factory.CodeTransition(CSharpSymbolType.RazorCommentTransition),
Factory.MetaCode("*", CSharpSymbolType.RazorCommentStar).Accepts(AcceptedCharacters.None),
Factory.Comment(" Foo ", CSharpSymbolType.RazorComment),
Factory.MetaCode("*", CSharpSymbolType.RazorCommentStar).Accepts(AcceptedCharacters.None),
Factory.CodeTransition(CSharpSymbolType.RazorCommentTransition)
),
Factory.Code(" ").AsStatement(),
new CommentBlock(
Factory.CodeTransition(CSharpSymbolType.RazorCommentTransition),
Factory.MetaCode("*", CSharpSymbolType.RazorCommentStar).Accepts(AcceptedCharacters.None),
Factory.Comment(" Bar ", CSharpSymbolType.RazorComment),
Factory.MetaCode("*", CSharpSymbolType.RazorCommentStar).Accepts(AcceptedCharacters.None),
Factory.CodeTransition(CSharpSymbolType.RazorCommentTransition)
),
Factory.Code(postComment).AsStatement().Accepts(acceptedCharacters)));
}
private void RunSimpleWrappedMarkupTest(string prefix, string markup, string suffix, AcceptedCharacters acceptedCharacters = AcceptedCharacters.Any)
{
ParseBlockTest(prefix + markup + suffix,
new StatementBlock(
Factory.Code(prefix).AsStatement(),
new MarkupBlock(
Factory.Markup(markup).Accepts(AcceptedCharacters.None)
),
Factory.Code(suffix).AsStatement().Accepts(acceptedCharacters)
));
}
private void NamespaceImportTest(string content, string expectedNS, AcceptedCharacters acceptedCharacters = AcceptedCharacters.None, string errorMessage = null, SourceLocation? location = null)
{
var errors = new RazorError[0];
if (!String.IsNullOrEmpty(errorMessage) && location.HasValue)
{
errors = new RazorError[]
{
new RazorError(errorMessage, location.Value)
};
}
ParseBlockTest(content,
new DirectiveBlock(
Factory.Code(content)
.AsNamespaceImport(expectedNS, CSharpCodeParser.UsingKeywordLength)
.Accepts(acceptedCharacters)),
errors);
}
}
}