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Emit tagged templates when targeting ES3 or 5

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This commit is contained in:
Ivo Gabe de Wolff
2015-01-04 14:47:18 +01:00
parent 6469375149
commit c2d0bf82c4
1 changed files with 28 additions and 5 deletions
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33
src/compiler/emitter.ts
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@@ -2059,8 +2059,26 @@ module ts {
return;
}
Debug.assert(node.parent.kind !== SyntaxKind.TaggedTemplateExpression);
if (node.parent.kind === SyntaxKind.TaggedTemplateExpression) {
// Emit should like:
// foo(["a", "b", "c"], expressions0, expression1)
// First we emit the string literal array
write("[");
emitLiteral(node.head);
forEach(node.templateSpans, templateSpan => {
write(", ");
emitLiteral(templateSpan.literal);
});
write("]");
// Now we emit the expressions
forEach(node.templateSpans, templateSpan => {
write(", ");
emit(templateSpan.expression);
});
return;
}
var emitOuterParens = isExpression(node.parent)
&& templateNeedsParens(node, <Expression>node.parent);
@@ -2487,10 +2505,15 @@ module ts {
}
function emitTaggedTemplateExpression(node: TaggedTemplateExpression): void {
Debug.assert(compilerOptions.target >= ScriptTarget.ES6, "Trying to emit a tagged template in pre-ES6 mode.");
emit(node.tag);
write(" ");
emit(node.template);
if (compilerOptions.target >= ScriptTarget.ES6) {
write(" ");
emit(node.template);
} else {
write("(");
emit(node.template);
write(")");
}
}
function emitParenExpression(node: ParenthesizedExpression) {