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Move optional property checking to the grammar checker.

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This commit is contained in:
Cyrus Najmabadi
2014-11-19 15:00:45 -08:00
parent 90b7a1c40a
commit cd75243d83
6 changed files with 79 additions and 51 deletions
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src/compiler/parser.ts
+60 -40
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@@ -2264,7 +2264,6 @@ module ts {
}
if (parseOptional(SyntaxKind.OpenBracketToken)) {
var indexedAccess = <IndexedAccess>createNode(SyntaxKind.IndexedAccess, expr.pos);
indexedAccess.object = expr;
@@ -2441,10 +2440,12 @@ module ts {
(<PropertyDeclaration>node).initializer = makeFunctionExpression(SyntaxKind.FunctionExpression, node.pos, undefined, sig, body);
return finishNode(node);
}
// Disallow optional property assignment
var flags: NodeFlags = 0;
// Disallowing of optional property assignments happens in the grammar checker.
if (token === SyntaxKind.QuestionToken) {
var questionStart = scanner.getTokenPos();
grammarErrorAtPos(questionStart, scanner.getStartPos() - questionStart, Diagnostics.A_object_member_cannot_be_declared_optional);
flags |= NodeFlags.QuestionMark;
nextToken();
}
@@ -2459,6 +2460,8 @@ module ts {
parseExpected(SyntaxKind.ColonToken);
(<PropertyDeclaration>node).initializer = parseAssignmentExpression(false);
}
node.flags = flags;
return finishNode(node);
}
@@ -3740,42 +3743,44 @@ module ts {
function dispatch(node: Node) {
switch (node.kind) {
case SyntaxKind.ArrowFunction: return visitArrowFunction(<FunctionExpression>node);
case SyntaxKind.BinaryExpression: return visitBinaryExpression(<BinaryExpression>node);
case SyntaxKind.BreakStatement: return visitBreakOrContinueStatement(<BreakOrContinueStatement>node);
case SyntaxKind.CallExpression: return visitCallExpression(<CallExpression>node);
case SyntaxKind.CallSignature: return visitCallSignature(<SignatureDeclaration>node);
case SyntaxKind.CatchBlock: return visitCatchBlock(<CatchBlock>node);
case SyntaxKind.ClassDeclaration: return visitClassDeclaration(<ClassDeclaration>node);
case SyntaxKind.Constructor: return visitConstructor(<ConstructorDeclaration>node);
case SyntaxKind.ConstructorType: return visitConstructorType(<SignatureDeclaration>node);
case SyntaxKind.ConstructSignature: return visitConstructSignature(<SignatureDeclaration>node);
case SyntaxKind.ContinueStatement: return visitBreakOrContinueStatement(<BreakOrContinueStatement>node);
case SyntaxKind.EnumDeclaration: return visitEnumDeclaration(<EnumDeclaration>node);
case SyntaxKind.ForInStatement: return visitForInStatement(<ForInStatement>node);
case SyntaxKind.ForStatement: return visitForStatement(<ForStatement>node);
case SyntaxKind.FunctionDeclaration: return visitFunctionDeclaration(<FunctionLikeDeclaration>node);
case SyntaxKind.FunctionExpression: return visitFunctionExpression(<FunctionExpression>node);
case SyntaxKind.FunctionType: return visitFunctionType(<SignatureDeclaration>node);
case SyntaxKind.GetAccessor: return visitGetAccessor(<MethodDeclaration>node);
case SyntaxKind.IndexSignature: return visitIndexSignature(<SignatureDeclaration>node);
case SyntaxKind.InterfaceDeclaration: return visitInterfaceDeclaration(<InterfaceDeclaration>node);
case SyntaxKind.LabeledStatement: return visitLabeledStatement(<LabeledStatement>node);
case SyntaxKind.Method: return visitMethod(<MethodDeclaration>node);
case SyntaxKind.ModuleDeclaration: return visitModuleDeclaration(<ModuleDeclaration>node);
case SyntaxKind.NewExpression: return visitNewExpression(<NewExpression>node);
case SyntaxKind.ObjectLiteral: return visitObjectLiteral(<ObjectLiteral>node);
case SyntaxKind.Parameter: return visitParameter(<ParameterDeclaration>node);
case SyntaxKind.PostfixOperator: return visitPostfixOperator(<UnaryExpression>node);
case SyntaxKind.PrefixOperator: return visitPrefixOperator(<UnaryExpression>node);
case SyntaxKind.SetAccessor: return visitSetAccessor(<MethodDeclaration>node);
case SyntaxKind.SwitchStatement: return visitSwitchStatement(<SwitchStatement>node);
case SyntaxKind.TaggedTemplateExpression: return visitTaggedTemplateExpression(<TaggedTemplateExpression>node);
case SyntaxKind.TupleType: return visitTupleType(<TupleTypeNode>node);
case SyntaxKind.TypeReference: return visitTypeReference(<TypeReferenceNode>node);
case SyntaxKind.VariableDeclaration: return visitVariableDeclaration(<VariableDeclaration>node);
case SyntaxKind.VariableStatement: return visitVariableStatement(<VariableStatement>node);
case SyntaxKind.WithStatement: return visitWithStatement(<WithStatement>node);
case SyntaxKind.ArrowFunction: return visitArrowFunction(<FunctionExpression>node);
case SyntaxKind.BinaryExpression: return visitBinaryExpression(<BinaryExpression>node);
case SyntaxKind.BreakStatement: return visitBreakOrContinueStatement(<BreakOrContinueStatement>node);
case SyntaxKind.CallExpression: return visitCallExpression(<CallExpression>node);
case SyntaxKind.CallSignature: return visitCallSignature(<SignatureDeclaration>node);
case SyntaxKind.CatchBlock: return visitCatchBlock(<CatchBlock>node);
case SyntaxKind.ClassDeclaration: return visitClassDeclaration(<ClassDeclaration>node);
case SyntaxKind.Constructor: return visitConstructor(<ConstructorDeclaration>node);
case SyntaxKind.ConstructorType: return visitConstructorType(<SignatureDeclaration>node);
case SyntaxKind.ConstructSignature: return visitConstructSignature(<SignatureDeclaration>node);
case SyntaxKind.ContinueStatement: return visitBreakOrContinueStatement(<BreakOrContinueStatement>node);
case SyntaxKind.EnumDeclaration: return visitEnumDeclaration(<EnumDeclaration>node);
case SyntaxKind.ForInStatement: return visitForInStatement(<ForInStatement>node);
case SyntaxKind.ForStatement: return visitForStatement(<ForStatement>node);
case SyntaxKind.FunctionDeclaration: return visitFunctionDeclaration(<FunctionLikeDeclaration>node);
case SyntaxKind.FunctionExpression: return visitFunctionExpression(<FunctionExpression>node);
case SyntaxKind.FunctionType: return visitFunctionType(<SignatureDeclaration>node);
case SyntaxKind.GetAccessor: return visitGetAccessor(<MethodDeclaration>node);
case SyntaxKind.IndexSignature: return visitIndexSignature(<SignatureDeclaration>node);
case SyntaxKind.InterfaceDeclaration: return visitInterfaceDeclaration(<InterfaceDeclaration>node);
case SyntaxKind.LabeledStatement: return visitLabeledStatement(<LabeledStatement>node);
case SyntaxKind.Method: return visitMethod(<MethodDeclaration>node);
case SyntaxKind.ModuleDeclaration: return visitModuleDeclaration(<ModuleDeclaration>node);
case SyntaxKind.NewExpression: return visitNewExpression(<NewExpression>node);
case SyntaxKind.ObjectLiteral: return visitObjectLiteral(<ObjectLiteral>node);
case SyntaxKind.Parameter: return visitParameter(<ParameterDeclaration>node);
case SyntaxKind.PostfixOperator: return visitPostfixOperator(<UnaryExpression>node);
case SyntaxKind.PrefixOperator: return visitPrefixOperator(<UnaryExpression>node);
case SyntaxKind.PropertyAssignment: return visitPropertyAssignment(<PropertyDeclaration>node);
case SyntaxKind.SetAccessor: return visitSetAccessor(<MethodDeclaration>node);
case SyntaxKind.ShorthandPropertyAssignment: return visitShorthandPropertyAssignment(<ShortHandPropertyDeclaration>node);
case SyntaxKind.SwitchStatement: return visitSwitchStatement(<SwitchStatement>node);
case SyntaxKind.TaggedTemplateExpression: return visitTaggedTemplateExpression(<TaggedTemplateExpression>node);
case SyntaxKind.TupleType: return visitTupleType(<TupleTypeNode>node);
case SyntaxKind.TypeReference: return visitTypeReference(<TypeReferenceNode>node);
case SyntaxKind.VariableDeclaration: return visitVariableDeclaration(<VariableDeclaration>node);
case SyntaxKind.VariableStatement: return visitVariableStatement(<VariableStatement>node);
case SyntaxKind.WithStatement: return visitWithStatement(<WithStatement>node);
}
}
@@ -4346,6 +4351,17 @@ module ts {
}
}
function visitPropertyAssignment(node: PropertyDeclaration) {
checkForInvalidQuestionMark(node, Diagnostics.An_object_member_cannot_be_declared_optional);
}
function checkForInvalidQuestionMark(node: Declaration, message: DiagnosticMessage) {
if (node.flags & NodeFlags.QuestionMark) {
var pos = skipTrivia(sourceText, node.name.end);
return grammarErrorAtPos(pos, "?".length, message);
}
}
function visitSetAccessor(node: MethodDeclaration) {
checkTypeParameterList(node.typeParameters) ||
checkParameterList(node.parameters) ||
@@ -4391,6 +4407,10 @@ module ts {
}
}
function visitShorthandPropertyAssignment(node: ShortHandPropertyDeclaration): void {
checkForInvalidQuestionMark(node, Diagnostics.An_object_member_cannot_be_declared_optional);
}
function visitSwitchStatement(node: SwitchStatement) {
var firstDefaultClause: CaseOrDefaultClause;