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Copy pathsyntaxFacts2.ts
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29 lines (23 loc) · 1.06 KB
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///<reference path='references.ts' />
module TypeScript.SyntaxFacts {
export function isDirectivePrologueElement(node: ISyntaxNodeOrToken): boolean {
if (node.kind() === SyntaxKind.ExpressionStatement) {
var expressionStatement = <ExpressionStatementSyntax>node;
var expression = expressionStatement.expression;
if (expression.kind() === SyntaxKind.StringLiteral) {
return true;
}
}
return false;
}
export function isUseStrictDirective(node: ISyntaxNodeOrToken): boolean {
var expressionStatement = <ExpressionStatementSyntax>node;
var stringLiteral = <ISyntaxToken>expressionStatement.expression;
var text = stringLiteral.text();
return text === '"use strict"' || text === "'use strict'";
}
export function isIdentifierNameOrAnyKeyword(token: ISyntaxToken): boolean {
var tokenKind = token.kind();
return tokenKind === SyntaxKind.IdentifierName || SyntaxFacts.isAnyKeyword(tokenKind);
}
}