summaryrefslogtreecommitdiff
path: root/node_modules/@babel/traverse/lib/path/evaluation.js
diff options
context:
space:
mode:
Diffstat (limited to 'node_modules/@babel/traverse/lib/path/evaluation.js')
-rw-r--r--node_modules/@babel/traverse/lib/path/evaluation.js347
1 files changed, 0 insertions, 347 deletions
diff --git a/node_modules/@babel/traverse/lib/path/evaluation.js b/node_modules/@babel/traverse/lib/path/evaluation.js
deleted file mode 100644
index 7bbe82fb..00000000
--- a/node_modules/@babel/traverse/lib/path/evaluation.js
+++ /dev/null
@@ -1,347 +0,0 @@
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.evaluate = evaluate;
-exports.evaluateTruthy = evaluateTruthy;
-const VALID_OBJECT_CALLEES = ["Number", "String", "Math"];
-const VALID_IDENTIFIER_CALLEES = ["isFinite", "isNaN", "parseFloat", "parseInt", "decodeURI", "decodeURIComponent", "encodeURI", "encodeURIComponent", null, null];
-const INVALID_METHODS = ["random"];
-function isValidObjectCallee(val) {
- return VALID_OBJECT_CALLEES.includes(val);
-}
-function isValidIdentifierCallee(val) {
- return VALID_IDENTIFIER_CALLEES.includes(val);
-}
-function isInvalidMethod(val) {
- return INVALID_METHODS.includes(val);
-}
-function evaluateTruthy() {
- const res = this.evaluate();
- if (res.confident) return !!res.value;
-}
-function deopt(path, state) {
- if (!state.confident) return;
- state.deoptPath = path;
- state.confident = false;
-}
-const Globals = new Map([["undefined", undefined], ["Infinity", Infinity], ["NaN", NaN]]);
-function evaluateCached(path, state) {
- const {
- node
- } = path;
- const {
- seen
- } = state;
- if (seen.has(node)) {
- const existing = seen.get(node);
- if (existing.resolved) {
- return existing.value;
- } else {
- deopt(path, state);
- return;
- }
- } else {
- const item = {
- resolved: false
- };
- seen.set(node, item);
- const val = _evaluate(path, state);
- if (state.confident) {
- item.resolved = true;
- item.value = val;
- }
- return val;
- }
-}
-function _evaluate(path, state) {
- if (!state.confident) return;
- if (path.isSequenceExpression()) {
- const exprs = path.get("expressions");
- return evaluateCached(exprs[exprs.length - 1], state);
- }
- if (path.isStringLiteral() || path.isNumericLiteral() || path.isBooleanLiteral()) {
- return path.node.value;
- }
- if (path.isNullLiteral()) {
- return null;
- }
- if (path.isTemplateLiteral()) {
- return evaluateQuasis(path, path.node.quasis, state);
- }
- if (path.isTaggedTemplateExpression() && path.get("tag").isMemberExpression()) {
- const object = path.get("tag.object");
- const {
- node: {
- name
- }
- } = object;
- const property = path.get("tag.property");
- if (object.isIdentifier() && name === "String" && !path.scope.getBinding(name) && property.isIdentifier() && property.node.name === "raw") {
- return evaluateQuasis(path, path.node.quasi.quasis, state, true);
- }
- }
- if (path.isConditionalExpression()) {
- const testResult = evaluateCached(path.get("test"), state);
- if (!state.confident) return;
- if (testResult) {
- return evaluateCached(path.get("consequent"), state);
- } else {
- return evaluateCached(path.get("alternate"), state);
- }
- }
- if (path.isExpressionWrapper()) {
- return evaluateCached(path.get("expression"), state);
- }
- if (path.isMemberExpression() && !path.parentPath.isCallExpression({
- callee: path.node
- })) {
- const property = path.get("property");
- const object = path.get("object");
- if (object.isLiteral()) {
- const value = object.node.value;
- const type = typeof value;
- let key = null;
- if (path.node.computed) {
- key = evaluateCached(property, state);
- if (!state.confident) return;
- } else if (property.isIdentifier()) {
- key = property.node.name;
- }
- if ((type === "number" || type === "string") && key != null && (typeof key === "number" || typeof key === "string")) {
- return value[key];
- }
- }
- }
- if (path.isReferencedIdentifier()) {
- const binding = path.scope.getBinding(path.node.name);
- if (binding) {
- if (binding.constantViolations.length > 0 || path.node.start < binding.path.node.end) {
- deopt(binding.path, state);
- return;
- }
- if (binding.hasValue) {
- return binding.value;
- }
- }
- const name = path.node.name;
- if (Globals.has(name)) {
- if (!binding) {
- return Globals.get(name);
- }
- deopt(binding.path, state);
- return;
- }
- const resolved = path.resolve();
- if (resolved === path) {
- deopt(path, state);
- return;
- } else {
- return evaluateCached(resolved, state);
- }
- }
- if (path.isUnaryExpression({
- prefix: true
- })) {
- if (path.node.operator === "void") {
- return undefined;
- }
- const argument = path.get("argument");
- if (path.node.operator === "typeof" && (argument.isFunction() || argument.isClass())) {
- return "function";
- }
- const arg = evaluateCached(argument, state);
- if (!state.confident) return;
- switch (path.node.operator) {
- case "!":
- return !arg;
- case "+":
- return +arg;
- case "-":
- return -arg;
- case "~":
- return ~arg;
- case "typeof":
- return typeof arg;
- }
- }
- if (path.isArrayExpression()) {
- const arr = [];
- const elems = path.get("elements");
- for (const elem of elems) {
- const elemValue = elem.evaluate();
- if (elemValue.confident) {
- arr.push(elemValue.value);
- } else {
- deopt(elemValue.deopt, state);
- return;
- }
- }
- return arr;
- }
- if (path.isObjectExpression()) {
- const obj = {};
- const props = path.get("properties");
- for (const prop of props) {
- if (prop.isObjectMethod() || prop.isSpreadElement()) {
- deopt(prop, state);
- return;
- }
- const keyPath = prop.get("key");
- let key;
- if (prop.node.computed) {
- key = keyPath.evaluate();
- if (!key.confident) {
- deopt(key.deopt, state);
- return;
- }
- key = key.value;
- } else if (keyPath.isIdentifier()) {
- key = keyPath.node.name;
- } else {
- key = keyPath.node.value;
- }
- const valuePath = prop.get("value");
- let value = valuePath.evaluate();
- if (!value.confident) {
- deopt(value.deopt, state);
- return;
- }
- value = value.value;
- obj[key] = value;
- }
- return obj;
- }
- if (path.isLogicalExpression()) {
- const wasConfident = state.confident;
- const left = evaluateCached(path.get("left"), state);
- const leftConfident = state.confident;
- state.confident = wasConfident;
- const right = evaluateCached(path.get("right"), state);
- const rightConfident = state.confident;
- switch (path.node.operator) {
- case "||":
- state.confident = leftConfident && (!!left || rightConfident);
- if (!state.confident) return;
- return left || right;
- case "&&":
- state.confident = leftConfident && (!left || rightConfident);
- if (!state.confident) return;
- return left && right;
- case "??":
- state.confident = leftConfident && (left != null || rightConfident);
- if (!state.confident) return;
- return left != null ? left : right;
- }
- }
- if (path.isBinaryExpression()) {
- const left = evaluateCached(path.get("left"), state);
- if (!state.confident) return;
- const right = evaluateCached(path.get("right"), state);
- if (!state.confident) return;
- switch (path.node.operator) {
- case "-":
- return left - right;
- case "+":
- return left + right;
- case "/":
- return left / right;
- case "*":
- return left * right;
- case "%":
- return left % right;
- case "**":
- return Math.pow(left, right);
- case "<":
- return left < right;
- case ">":
- return left > right;
- case "<=":
- return left <= right;
- case ">=":
- return left >= right;
- case "==":
- return left == right;
- case "!=":
- return left != right;
- case "===":
- return left === right;
- case "!==":
- return left !== right;
- case "|":
- return left | right;
- case "&":
- return left & right;
- case "^":
- return left ^ right;
- case "<<":
- return left << right;
- case ">>":
- return left >> right;
- case ">>>":
- return left >>> right;
- }
- }
- if (path.isCallExpression()) {
- const callee = path.get("callee");
- let context;
- let func;
- if (callee.isIdentifier() && !path.scope.getBinding(callee.node.name) && (isValidObjectCallee(callee.node.name) || isValidIdentifierCallee(callee.node.name))) {
- func = global[callee.node.name];
- }
- if (callee.isMemberExpression()) {
- const object = callee.get("object");
- const property = callee.get("property");
- if (object.isIdentifier() && property.isIdentifier() && isValidObjectCallee(object.node.name) && !isInvalidMethod(property.node.name)) {
- context = global[object.node.name];
- const key = property.node.name;
- if (hasOwnProperty.call(context, key)) {
- func = context[key];
- }
- }
- if (object.isLiteral() && property.isIdentifier()) {
- const type = typeof object.node.value;
- if (type === "string" || type === "number") {
- context = object.node.value;
- func = context[property.node.name];
- }
- }
- }
- if (func) {
- const args = path.get("arguments").map(arg => evaluateCached(arg, state));
- if (!state.confident) return;
- return func.apply(context, args);
- }
- }
- deopt(path, state);
-}
-function evaluateQuasis(path, quasis, state, raw = false) {
- let str = "";
- let i = 0;
- const exprs = path.isTemplateLiteral() ? path.get("expressions") : path.get("quasi.expressions");
- for (const elem of quasis) {
- if (!state.confident) break;
- str += raw ? elem.value.raw : elem.value.cooked;
- const expr = exprs[i++];
- if (expr) str += String(evaluateCached(expr, state));
- }
- if (!state.confident) return;
- return str;
-}
-function evaluate() {
- const state = {
- confident: true,
- deoptPath: null,
- seen: new Map()
- };
- let value = evaluateCached(this, state);
- if (!state.confident) value = undefined;
- return {
- confident: state.confident,
- deopt: state.deoptPath,
- value: value
- };
-}
-
-//# sourceMappingURL=evaluation.js.map
generated by cgit v1.2.3 (git 2.25.1) at 2026-11-01 18:24:18 +0000