8000 Adds transforms for NonNullExpression · sweshgit/TypeScript@0d6ff81 · GitHub
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Adds transforms for NonNullExpression
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4 files changed

+21
-1
lines changed

4 files changed

+21
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lines changed

‎src/compiler/binder.ts

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@@ -1883,6 +1883,7 @@ namespace ts {
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case SyntaxKind.EnumMember:
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case SyntaxKind.TypeAssertionExpression:
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case SyntaxKind.AsExpression:
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case SyntaxKind.NonNullExpression:
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case SyntaxKind.ReadonlyKeyword:
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// These nodes are TypeScript syntax.
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transformFlags = TransformFlags.AssertTypeScript;

‎src/compiler/printer.ts

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@@ -751,6 +751,8 @@ const _super = (function (geti, seti) {
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return;
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case SyntaxKind.AsExpression:
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return emitAsExpression(<AsExpression>node);
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case SyntaxKind.NonNullExpression:
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return emitNonNullExpression(<NonNullExpression>node);
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// JSX
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case SyntaxKind.JsxElement:
@@ -1286,6 +1288,11 @@ const _super = (function (geti, seti) {
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}
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}
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function emitNonNullExpression(node: NonNullExpression) {
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emitExpression(node.expression);
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write("!");
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}
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//
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// Misc
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//

‎src/compiler/transformers/ts.ts

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@@ -371,6 +371,10 @@ namespace ts {
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// TypeScript type assertions are removed, but their subtrees are preserved.
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return visitAssertionExpression(<AssertionExpression>node);
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case SyntaxKind.NonNullExpression:
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// TypeScript non-null expressions are removed, but their subtrees are preserved.
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return visitNonNullExpression(<NonNullExpression>node);
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case SyntaxKind.EnumDeclaration:
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// TypeScript enum declarations do not exist in ES6 and must be rewritten.
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return visitEnumDeclaration(<EnumDeclaration>node);
@@ -2228,7 +2232,12 @@ namespace ts {
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}
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function visitAssertionExpression(node: AssertionExpression): Expression {
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const expression = visitNode((<TypeAssertion | AsExpression>node).expression, visitor, isExpression);
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const expression = visitNode(node.expression, visitor, isExpression);
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return createPartiallyEmittedExpression(expression, node);
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}
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function visitNonNullExpression(node: NonNullExpression): Expression {
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const expression = visitNode(node.expression, visitor, isLeftHandSideExpression);
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return createPartiallyEmittedExpression(expression, node);
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}
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‎src/compiler/visitor.ts

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@@ -219,6 +219,9 @@ namespace ts {
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{ name: "expression", test: isExpression },
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{ name: "type", test: isTypeNode }
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],
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[SyntaxKind.NonNullExpression]: [
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{ name: "expression", test: isLeftHandSideExpression }
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],
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[SyntaxKind.TemplateSpan]: [
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{ name: "expression", test: isExpression },
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{ name: "literal", test: isTemplateLiteralFragment }

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