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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.transform = transform;
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var t = require("../../index"); // func and call_indirect instructions can either define a signature inline, or
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// reference a signature, e.g.
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//
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// ;; inline signature
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// (func (result i64)
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// (i64.const 2)
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// )
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// ;; signature reference
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// (type (func (result i64)))
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// (func (type 0)
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// (i64.const 2))
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// )
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//
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// this AST transform denormalises the type references, making all signatures within the module
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// inline.
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function transform(ast) {
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var typeInstructions = [];
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t.traverse(ast, {
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TypeInstruction: function TypeInstruction(_ref) {
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var node = _ref.node;
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typeInstructions.push(node);
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}
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});
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if (!typeInstructions.length) {
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return;
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}
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function denormalizeSignature(signature) {
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// signature referenced by identifier
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if (signature.type === "Identifier") {
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var identifier = signature;
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var typeInstruction = typeInstructions.find(function (t) {
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return t.id.type === identifier.type && t.id.value === identifier.value;
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});
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if (!typeInstruction) {
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throw new Error("A type instruction reference was not found ".concat(JSON.stringify(signature)));
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}
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return typeInstruction.functype;
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} // signature referenced by index
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if (signature.type === "NumberLiteral") {
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var signatureRef = signature;
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var _typeInstruction = typeInstructions[signatureRef.value];
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return _typeInstruction.functype;
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}
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return signature;
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}
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t.traverse(ast, {
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Func: function (_Func) {
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function Func(_x) {
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return _Func.apply(this, arguments);
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}
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Func.toString = function () {
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return _Func.toString();
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};
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return Func;
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}(function (_ref2) {
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var node = _ref2.node;
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node.signature = denormalizeSignature(node.signature);
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}),
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CallIndirectInstruction: function CallIndirectInstruction(_ref3) {
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var node = _ref3.node;
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node.signature = denormalizeSignature(node.signature);
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}
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});
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}
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