Add a log message about unsupported operators
This change logs a message for unsupported operators, until marapongo/mu#50 can be implemented. During debugging, this might come in handy some day.
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1 changed files with 17 additions and 5 deletions
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@ -2,7 +2,7 @@
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"use strict";
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import {contract, object} from "nodets";
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import {contract, log, object} from "nodets";
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import * as fspath from "path";
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import * as ts from "typescript";
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import * as ast from "../ast";
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@ -1203,11 +1203,23 @@ export class Transformer {
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}
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private transformBinaryOperatorExpression(node: ts.BinaryExpression): ast.BinaryOperatorExpression {
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let operator: ast.BinaryOperator | undefined = binaryOperators.get(node.operatorToken.kind);
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if (!operator) {
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// TODO: finish binary operator mapping; for any left that are unsupported, introduce a real error message.
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return contract.fail(`Unsupported binary operator: ${ts.SyntaxKind[node.operatorToken.kind]}`);
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// A few operators aren't faithfully emulated; in those cases, log warnings.
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if (log.v(3)) {
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switch (node.operatorToken.kind) {
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case ts.SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken:
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case ts.SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
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case ts.SyntaxKind.EqualsEqualsEqualsToken:
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case ts.SyntaxKind.ExclamationEqualsEqualsToken:
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log.out(3).info(
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`ECMAScript operator ${ts.SyntaxKind[node.operatorToken.kind]} not supported; ` +
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`until marapongo/mu#50 is implemented, be careful about subtle behavioral differences`
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);
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break;
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}
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}
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let operator: ast.BinaryOperator | undefined = binaryOperators.get(node.operatorToken.kind);
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contract.assert(!!operator, `Expected binary operator for: ${ts.SyntaxKind[node.operatorToken.kind]}`);
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return this.withLocation(node, <ast.BinaryOperatorExpression>{
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kind: ast.binaryOperatorExpressionKind,
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operator: operator,
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