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62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
"use strict";
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const assert = require("assert");
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const types = require("@babel/types");
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const template = require("@babel/template").default;
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const templateExpression = require("./util/template-expression");
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// FIXME: Auto-generate argument list based on exposed API surface?
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let tmplModule = template(`
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module.exports = function({ builtins, $memoize, $handleArgument, $assertUniqueKeys }) {
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return %%contents%%;
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};
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`);
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let tmplIdentifierReference = templateExpression(`(
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%%name%%()
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)`);
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let trivial = {
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name: "trivial-transforms",
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visitors: {
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// Trivial transforms
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NixParenthesizedExpression: (node) => node.expression,
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Program: (_node, { setContext, defer }) => {
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setContext(null, "identifierType", "reference");
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return defer((node) => {
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assert(node.body.length === 1);
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return tmplModule({ contents: node.body[0] });
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});
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},
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NixIdentifier: (node, { getContext }) => {
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// FIXME: Mangle reserved keywords like `const`
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if (getContext("identifierType") === "define") {
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return types.identifier(node.name);
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} else { // reference
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return tmplIdentifierReference({ name: node.name });
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}
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},
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NixBinaryOperation: (_node, { defer }) => {
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return defer((node) => {
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// FIXME: Verify that all the 'operator' values match between Nix and JS!
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return types.binaryExpression(node.operator, node.left, node.right);
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});
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}
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}
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};
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module.exports = [
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require("./desugar-inherits"),
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require("./desugar-attrsets"),
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require("./desugar-let-attribute-set"),
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require("./desugar-interpolation-expressions"),
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require("./mangle-identifiers"),
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require("./let-in"),
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require("./literals"),
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require("./functions"),
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require("./attribute-sets"),
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trivial,
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];
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