I'm extremely stupid and didn't commit as I go. To anyone reading this
I'm extremely sorry. A lot of these changes are very broad and I plan on
releasing Babel 6.0.0 today live on stage at Ember Camp London so I'm
afraid I couldn't wait. If you're ever in London I'll buy you a beer
(or assorted beverage!) to make up for it, also I'll kiss your feet and
give you a back massage, maybe.
This commit is contained in:
Sebastian McKenzie 2015-10-29 17:51:24 +00:00
parent d0b584fd13
commit b909a81ab7
453 changed files with 6107 additions and 7639 deletions

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@ -32,13 +32,12 @@ Significant diversions are expected to occur in the future such as streaming, EB
the top level raises an error. Set this to `true` to accept such
code.
- **allowSuperOutsideMethod** TODO
- **sourceType**: Indicate the mode the code should be parsed in. Can be
either `"script"` or `"module"`.
- **features**: Object containing names of all the proposed syntax you want
to support.
- **plugins**: Object containg the plugins that you want to enable.
- **plugins**: Array containing the plugins that you want to enable.
### Example
@ -47,29 +46,28 @@ require("babylon").parse("code", {
// parse in strict mode and allow module declarations
sourceType: "module",
features: {
features: [
// enable experimental async functions
asyncFunctions: true
}
"asyncFunctions",
plugins: {
// enable jsx and flow syntax
jsx: true,
flow: true
}
"jsx",
"flow"
]
});
```
### Features
- `asyncFunctions`
- `doExpressions`
- `comprehensions`
- `trailingFunctionCommas`
- `objectRestSpread`
- `decorators`
### Plugins
- `jsx`
- `flow`
- `asyncFunctions`
- `classConstructorCall`
- `doExpressions`
- `trailingFunctionCommas`
- `objectRestSpread`
- `decorators`
- `classProperties`
- `exportExtensions`
- `exponentiationOperator`
- `asyncGenerators`

View File

@ -1,6 +1,6 @@
{
"name": "babylon",
"version": "5.8.23",
"version": "5.10.32",
"description": "A JavaScript parser",
"author": "Sebastian McKenzie <sebmck@gmail.com>",
"homepage": "https://babeljs.io/",
@ -8,9 +8,9 @@
"repository": "babel/babel",
"main": "lib/index.js",
"dependencies": {
"babel-runtime": "^5.8.20"
"babel-runtime": "^5.10.32"
},
"bin": {
"babylon": "./bin/babylon.js"
}
}
}

View File

@ -12,10 +12,12 @@ export const defaultOptions = {
// When enabled, import/export statements are not constrained to
// appearing at the top of the program.
allowImportExportEverywhere: false,
plugins: {},
// Babel-specific options
features: {},
strictMode: null
// TODO
allowSuperOutsideMethod: false,
// An array of plugins to enable
plugins: [],
// TODO
strictMode: null,
};
// Interpret and default an options object

View File

@ -40,9 +40,9 @@ pp.addComment = function (comment) {
pp.processComment = function (node) {
if (node.type === "Program" && node.body.length > 0) return;
var stack = this.state.commentStack;
let stack = this.state.commentStack;
var lastChild, trailingComments, i;
let lastChild, trailingComments, i;
if (this.state.trailingComments.length > 0) {
// If the first comment in trailingComments comes after the
@ -62,7 +62,7 @@ pp.processComment = function (node) {
this.state.trailingComments.length = 0;
}
} else {
var lastInStack = last(stack);
let lastInStack = last(stack);
if (stack.length > 0 && lastInStack.trailingComments && lastInStack.trailingComments[0].start >= node.end) {
trailingComments = lastInStack.trailingComments;
lastInStack.trailingComments = null;
@ -80,7 +80,7 @@ pp.processComment = function (node) {
node.leadingComments = lastChild.leadingComments;
lastChild.leadingComments = null;
} else {
// A leading comment for an anonymous class had been stolen by its first MethodDefinition,
// A leading comment for an anonymous class had been stolen by its first ClassMethod,
// so this takes back the leading comment.
// See also: https://github.com/eslint/espree/issues/158
for (i = lastChild.leadingComments.length - 2; i >= 0; --i) {

View File

@ -30,9 +30,10 @@ const pp = Parser.prototype;
// strict mode, init properties are also not allowed to be repeated.
pp.checkPropClash = function (prop, propHash) {
if (prop.computed || prop.method || prop.shorthand) return;
if (prop.computed || prop.method) return;
let key = prop.key, name;
let key = prop.key;
let name;
switch (key.type) {
case "Identifier":
name = key.name;
@ -47,8 +48,7 @@ pp.checkPropClash = function (prop, propHash) {
return;
}
let kind = prop.kind;
if (name === "__proto__" && kind === "init") {
if (name === "__proto__" && prop.kind === "init") {
if (propHash.proto) this.raise(key.start, "Redefinition of __proto__ property");
propHash.proto = true;
}
@ -225,11 +225,11 @@ pp.parseExprSubscripts = function (refShorthandDefaultPos) {
if (refShorthandDefaultPos && refShorthandDefaultPos.start) {
return expr;
} else {
return this.parseSubscripts(expr, startPos, startLoc);
return this.parseSubscripts(expr, startPos, startLoc);
}
};
pp.parseSubscripts = function(base, startPos, startLoc, noCalls) {
pp.parseSubscripts = function (base, startPos, startLoc, noCalls) {
for (;;) {
if (!noCalls && this.eat(tt.doubleColon)) {
let node = this.startNodeAt(startPos, startLoc);
@ -255,11 +255,11 @@ pp.parseSubscripts = function(base, startPos, startLoc, noCalls) {
let node = this.startNodeAt(startPos, startLoc);
node.callee = base;
node.arguments = this.parseCallExpressionArguments(tt.parenR, this.hasFeature("trailingFunctionCommas"), possibleAsync);
node.arguments = this.parseCallExpressionArguments(tt.parenR, this.hasPlugin("trailingFunctionCommas"), possibleAsync);
base = this.finishNode(node, "CallExpression");
if (possibleAsync && this.shouldParseAsyncArrow()) {
base = this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node);
return this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node);
} else {
this.toReferencedList(node.arguments);
}
@ -307,7 +307,7 @@ pp.shouldParseAsyncArrow = function () {
};
pp.parseAsyncArrowFromCallExpression = function (node, call) {
if (!this.hasFeature("asyncFunctions")) this.unexpected();
if (!this.hasPlugin("asyncFunctions")) this.unexpected();
this.expect(tt.arrow);
return this.parseArrowExpression(node, call.arguments, true);
};
@ -328,7 +328,7 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
let node, canBeArrow = this.state.potentialArrowAt === this.state.start;
switch (this.state.type) {
case tt._super:
if (!this.state.inFunction) {
if (!this.state.inMethod && !this.options.allowSuperOutsideMethod) {
this.raise(this.state.start, "'super' outside of function or class");
}
@ -337,6 +337,9 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
if (!this.match(tt.parenL) && !this.match(tt.bracketL) && !this.match(tt.dot)) {
this.unexpected();
}
if (this.match(tt.parenL) && this.state.inMethod !== "constructor" && !this.options.allowSuperOutsideMethod) {
this.raise(node.start, "super() outside of class constructor");
}
return this.finishNode(node, "Super");
case tt._this:
@ -349,18 +352,22 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
case tt.name:
node = this.startNode();
let id = this.parseIdentifier(true);
let allowAwait = this.hasPlugin("asyncFunctions") && this.state.value === "await" && this.state.inAsync;
let allowYield = this.shouldAllowYieldIdentifier();
let id = this.parseIdentifier(allowAwait || allowYield);
if (this.hasFeature("asyncFunctions")) {
if (this.hasPlugin("asyncFunctions")) {
if (id.name === "await") {
if (this.inAsync) return this.parseAwait(node);
if (this.state.inAsync || this.inModule) {
return this.parseAwait(node);
}
} else if (id.name === "async" && this.match(tt._function) && !this.canInsertSemicolon()) {
this.next();
return this.parseFunction(node, false, false, true);
} else if (canBeArrow && id.name === "async" && this.match(tt.name)) {
var params = [this.parseIdentifier()];
let params = [this.parseIdentifier()];
this.expect(tt.arrow);
// var foo = bar => {};
// let foo = bar => {};
return this.parseArrowExpression(node, params, true);
}
}
@ -372,14 +379,14 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
return id;
case tt._do:
if (this.hasFeature("doExpressions")) {
if (this.hasPlugin("doExpressions")) {
let node = this.startNode();
this.next();
var oldInFunction = this.state.inFunction;
var oldLabels = this.state.labels;
let oldInFunction = this.state.inFunction;
let oldLabels = this.state.labels;
this.state.labels = [];
this.state.inFunction = false;
node.body = this.parseBlock();
node.body = this.parseBlock(false, true);
this.state.inFunction = oldInFunction;
this.state.labels = oldLabels;
return this.finishNode(node, "DoExpression");
@ -405,8 +412,7 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
case tt._true: case tt._false:
node = this.startNode();
node.rawValue = node.value = this.match(tt._true);
node.raw = this.state.type.keyword;
node.value = this.match(tt._true);
this.next();
return this.finishNode(node, "BooleanLiteral");
@ -416,10 +422,6 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
case tt.bracketL:
node = this.startNode();
this.next();
// check whether this is array comprehension or regular array
if (this.hasFeature("comprehensions") && this.match(tt._for)) {
return this.parseComprehension(node, false);
}
node.elements = this.parseExprList(tt.bracketR, true, true, refShorthandDefaultPos);
this.toReferencedList(node.elements);
return this.finishNode(node, "ArrayExpression");
@ -464,8 +466,9 @@ pp.parseExprAtom = function (refShorthandDefaultPos) {
pp.parseLiteral = function (value, type) {
let node = this.startNode();
node.rawValue = node.value = value;
node.raw = this.input.slice(this.state.start, this.state.end);
this.addExtra(node, "rawValue", value);
this.addExtra(node, "raw", this.input.slice(this.state.start, this.state.end));
node.value = value;
this.next();
return this.finishNode(node, type);
};
@ -483,10 +486,6 @@ pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow
let val;
this.next();
if (this.hasFeature("comprehensions") && this.match(tt._for)) {
return this.parseComprehension(this.startNodeAt(startPos, startLoc), true);
}
let innerStartPos = this.state.start, innerStartLoc = this.state.startLoc;
let exprList = [], first = true;
let refShorthandDefaultPos = { start: 0 }, spreadStart, innerParenStart, optionalCommaStart;
@ -495,7 +494,7 @@ pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow
first = false;
} else {
this.expect(tt.comma);
if (this.match(tt.parenR) && this.hasFeature("trailingFunctionCommas")) {
if (this.match(tt.parenR) && this.hasPlugin("trailingFunctionCommas")) {
optionalCommaStart = this.state.start;
break;
}
@ -572,7 +571,7 @@ pp.parseNew = function () {
node.callee = this.parseNoCallExpr();
if (this.eat(tt.parenL)) {
node.arguments = this.parseExprList(tt.parenR, this.hasFeature("trailingFunctionCommas"));
node.arguments = this.parseExprList(tt.parenR, this.hasPlugin("trailingFunctionCommas"));
this.toReferencedList(node.arguments);
} else {
node.arguments = [];
@ -613,10 +612,14 @@ pp.parseTemplate = function () {
// Parse an object literal or binding pattern.
pp.parseObj = function (isPattern, refShorthandDefaultPos) {
let node = this.startNode(), first = true, propHash = Object.create(null);
node.properties = [];
let decorators = [];
let propHash = Object.create(null);
let first = true;
let node = this.startNode();
node.properties = [];
this.next();
while (!this.eat(tt.braceR)) {
if (first) {
first = false;
@ -634,24 +637,30 @@ pp.parseObj = function (isPattern, refShorthandDefaultPos) {
prop.decorators = decorators;
decorators = [];
}
if (this.hasFeature("objectRestSpread") && this.match(tt.ellipsis)) {
if (this.hasPlugin("objectRestSpread") && this.match(tt.ellipsis)) {
prop = this.parseSpread();
prop.type = isPattern ? "RestProperty" : "SpreadProperty";
node.properties.push(prop);
continue;
}
prop.method = false;
prop.shorthand = false;
if (isPattern || refShorthandDefaultPos) {
startPos = this.state.start;
startLoc = this.state.startLoc;
}
if (!isPattern) {
isGenerator = this.eat(tt.star);
}
if (!isPattern && this.hasFeature("asyncFunctions") && this.isContextual("async")) {
if (!isPattern && this.hasPlugin("asyncFunctions") && this.isContextual("async")) {
if (isGenerator) this.unexpected();
var asyncId = this.parseIdentifier();
let asyncId = this.parseIdentifier();
if (this.match(tt.colon) || this.match(tt.parenL) || this.match(tt.braceR)) {
prop.key = asyncId;
} else {
@ -661,43 +670,58 @@ pp.parseObj = function (isPattern, refShorthandDefaultPos) {
} else {
this.parsePropertyName(prop);
}
this.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos);
this.checkPropClash(prop, propHash);
node.properties.push(this.finishNode(prop, "Property"));
if (prop.shorthand) {
this.addExtra(prop, "shorthand", true);
}
node.properties.push(prop);
}
if (decorators.length) {
this.raise(this.state.start, "You have trailing decorators with no property");
}
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression");
};
pp.parseObjPropValue = function (prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos) {
if (this.eat(tt.colon)) {
prop.value = isPattern ? this.parseMaybeDefault(this.state.start, this.state.startLoc) : this.parseMaybeAssign(false, refShorthandDefaultPos);
prop.kind = "init";
} else if (this.match(tt.parenL)) {
return this.finishNode(prop, "ObjectProperty");
}
if (this.match(tt.parenL)) {
if (isPattern) this.unexpected();
prop.kind = "init";
prop.kind = "method";
prop.method = true;
prop.value = this.parseMethod(isGenerator, isAsync);
} else if (!prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && (!this.match(tt.comma) && !this.match(tt.braceR))) {
this.parseMethod(prop, isGenerator, isAsync);
return this.finishNode(prop, "ObjectMethod");
}
if (!prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && (!this.match(tt.comma) && !this.match(tt.braceR))) {
if (isGenerator || isAsync || isPattern) this.unexpected();
prop.kind = prop.key.name;
this.parsePropertyName(prop);
prop.value = this.parseMethod(false);
this.parseMethod(prop, false);
let paramCount = prop.kind === "get" ? 0 : 1;
if (prop.value.params.length !== paramCount) {
let start = prop.value.start;
if (prop.params.length !== paramCount) {
let start = prop.start;
if (prop.kind === "get") {
this.raise(start, "getter should have no params");
} else {
this.raise(start, "setter should have exactly one param");
}
}
} else if (!prop.computed && prop.key.type === "Identifier") {
prop.kind = "init";
return this.finishNode(prop, "ObjectMethod");
}
if (!prop.computed && prop.key.type === "Identifier") {
if (isPattern) {
var illegalBinding = this.isKeyword(prop.key.name);
let illegalBinding = this.isKeyword(prop.key.name);
if (!illegalBinding && this.state.strict) {
illegalBinding = reservedWords.strictBind(prop.key.name) || reservedWords.strict(prop.key.name);
}
@ -714,9 +738,10 @@ pp.parseObjPropValue = function (prop, startPos, startLoc, isGenerator, isAsync,
prop.value = prop.key.__clone();
}
prop.shorthand = true;
} else {
this.unexpected();
return this.finishNode(prop, "ObjectProperty");
}
this.unexpected();
};
pp.parsePropertyName = function (prop) {
@ -737,21 +762,23 @@ pp.initFunction = function (node, isAsync) {
node.id = null;
node.generator = false;
node.expression = false;
if (this.hasFeature("asyncFunctions")) {
if (this.hasPlugin("asyncFunctions")) {
node.async = !!isAsync;
}
};
// Parse object or class method.
pp.parseMethod = function (isGenerator, isAsync) {
let node = this.startNode();
pp.parseMethod = function (node, isGenerator, isAsync) {
let oldInMethod = this.state.inMethod;
this.state.inMethod = node.kind || true;
this.initFunction(node, isAsync);
this.expect(tt.parenL);
node.params = this.parseBindingList(tt.parenR, false, this.hasFeature("trailingFunctionCommas"));
node.params = this.parseBindingList(tt.parenR, false, this.hasPlugin("trailingFunctionCommas"));
node.generator = isGenerator;
this.parseFunctionBody(node);
return this.finishNode(node, "FunctionExpression");
this.state.inMethod = oldInMethod;
return node;
};
// Parse arrow function expression with given parameters.
@ -768,8 +795,8 @@ pp.parseArrowExpression = function (node, params, isAsync) {
pp.parseFunctionBody = function (node, allowExpression) {
let isExpression = allowExpression && !this.match(tt.braceL);
var oldInAsync = this.inAsync;
this.inAsync = node.async;
let oldInAsync = this.state.inAsync;
this.state.inAsync = node.async;
if (isExpression) {
node.body = this.parseMaybeAssign();
node.expression = true;
@ -782,21 +809,23 @@ pp.parseFunctionBody = function (node, allowExpression) {
node.expression = false;
this.state.inFunction = oldInFunc; this.state.inGenerator = oldInGen; this.state.labels = oldLabels;
}
this.inAsync = oldInAsync;
this.state.inAsync = oldInAsync;
// If this is a strict mode function, verify that argument names
// are not repeated, and it does not try to bind the words `eval`
// or `arguments`.
var checkLVal = this.state.strict;
var checkLValStrict = false;
let checkLVal = this.state.strict;
let checkLValStrict = false;
let isStrict = false;
// arrow function
if (allowExpression) checkLVal = true;
// normal function
if (!isExpression && node.body.directives.length) {
for (var directive of (node.body.directives: Array<Object>)) {
if (directive.value === "use strict") {
for (let directive of (node.body.directives: Array<Object>)) {
if (directive.value.value === "use strict") {
isStrict = true;
checkLVal = true;
checkLValStrict = true;
break;
@ -804,6 +833,11 @@ pp.parseFunctionBody = function (node, allowExpression) {
}
}
//
if (isStrict && node.id && node.id.type === "Identifier" && node.id.name === "yield") {
this.raise(node.id.start, "Binding yield in strict mode");
}
if (checkLVal) {
let nameHash = Object.create(null);
let oldStrict = this.state.strict;
@ -870,6 +904,10 @@ pp.parseIdentifier = function (liberal) {
this.unexpected();
}
if (!liberal && node.name === "await" && this.state.inAsync) {
this.raise(node.start, "invalid use of await inside of an async function");
}
this.next();
return this.finishNode(node, "Identifier");
};
@ -899,25 +937,3 @@ pp.parseYield = function () {
}
return this.finishNode(node, "YieldExpression");
};
// Parses array and generator comprehensions.
pp.parseComprehension = function (node, isGenerator) {
node.blocks = [];
while (this.match(tt._for)) {
let block = this.startNode();
this.next();
this.expect(tt.parenL);
block.left = this.parseBindingAtom();
this.checkLVal(block.left, true);
this.expectContextual("of");
block.right = this.parseExpression();
this.expect(tt.parenR);
node.blocks.push(this.finishNode(block, "ComprehensionBlock"));
}
node.filter = this.eat(tt._if) ? this.parseParenExpression() : null;
node.body = this.parseExpression();
this.expect(isGenerator ? tt.parenR : tt.bracketR);
node.generator = isGenerator;
return this.finishNode(node, "ComprehensionExpression");
};

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@ -4,8 +4,6 @@ import { reservedWords } from "../util/identifier";
import { getOptions } from "../options";
import Tokenizer from "../tokenizer";
// Registered plugins
export const plugins = {};
export default class Parser extends Tokenizer {
@ -14,12 +12,10 @@ export default class Parser extends Tokenizer {
super(options, input);
this.options = options;
this.inModule = this.options.sourceType === "module";
this.isReservedWord = reservedWords[6];
this.input = input;
this.loadPlugins(this.options.plugins);
// Figure out if it's a module code.
this.inModule = this.options.sourceType === "module";
this.plugins = this.loadPlugins(this.options.plugins);
// If enabled, skip leading hashbang line.
if (this.state.pos === 0 && this.input[0] === "#" && this.input[1] === "!") {
@ -27,20 +23,31 @@ export default class Parser extends Tokenizer {
}
}
hasFeature(name: string): boolean {
return !!this.options.features[name];
hasPlugin(name: string): boolean {
return !!(this.plugins["*"] || this.plugins[name]);
}
extend(name: string, f: Function) {
this[name] = f(this[name]);
}
loadPlugins(plugins) {
for (let name in plugins) {
let plugin = exports.plugins[name];
if (!plugin) throw new Error(`Plugin '${name}' not found`);
plugin(this, plugins[name]);
loadPlugins(plugins: Array<string>) {
let pluginMap = {};
if (plugins.indexOf("flow") >= 0) {
// ensure flow plugin loads last
plugins.splice(plugins.indexOf("flow"), 1);
plugins.push("flow");
}
for (let name of plugins) {
pluginMap[name] = true;
let plugin = exports.plugins[name];
if (plugin) plugin(this);
}
return pluginMap;
}
parse(): {

View File

@ -22,8 +22,18 @@ pp.toAssignable = function (node, isBinding) {
node.type = "ObjectPattern";
for (let prop of (node.properties: Array<Object>)) {
if (prop.type === "SpreadProperty") continue;
if (prop.kind !== "init") this.raise(prop.key.start, "Object pattern can't contain getter or setter");
this.toAssignable(prop.value, isBinding);
if (prop.type === "ObjectMethod") {
if (prop.kind === "get" || prop.kind === "set") {
this.raise(prop.key.start, "Object pattern can't contain getter or setter");
} else {
this.raise(prop.key.start, "Object pattern can't contain methods");
}
}
if (prop.type === "ObjectProperty") {
this.toAssignable(prop.value, isBinding);
}
}
break;
@ -94,14 +104,25 @@ pp.parseSpread = function (refShorthandDefaultPos) {
pp.parseRest = function () {
let node = this.startNode();
this.next();
node.argument = this.parseIdentifier();
node.argument = this.parseBindingIdentifier();
return this.finishNode(node, "RestElement");
};
pp.shouldAllowYieldIdentifier = function () {
return this.match(tt._yield) && !this.state.strict && !this.state.inGenerator;
};
pp.parseBindingIdentifier = function () {
return this.parseIdentifier(this.shouldAllowYieldIdentifier());
};
// Parses lvalue (assignable) atom.
pp.parseBindingAtom = function () {
switch (this.state.type) {
case tt._yield:
if (this.state.strict || this.state.inGenerator) this.unexpected();
case tt.name:
return this.parseIdentifier(true);
@ -120,7 +141,8 @@ pp.parseBindingAtom = function () {
};
pp.parseBindingList = function (close, allowEmpty, allowTrailingComma) {
var elts = [], first = true;
let elts = [];
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
@ -136,7 +158,7 @@ pp.parseBindingList = function (close, allowEmpty, allowTrailingComma) {
this.expect(close);
break;
} else {
var left = this.parseMaybeDefault();
let left = this.parseMaybeDefault();
this.parseAssignableListItemTypes(left);
elts.push(this.parseMaybeDefault(null, null, left));
}
@ -187,7 +209,7 @@ pp.checkLVal = function (expr, isBinding, checkClashes) {
case "ObjectPattern":
for (let prop of (expr.properties: Array<Object>)) {
if (prop.type === "Property") prop = prop.value;
if (prop.type === "ObjectProperty") prop = prop.value;
this.checkLVal(prop, isBinding, checkClashes);
}
break;

View File

@ -21,8 +21,8 @@ class Node {
loc: SourceLocation;
__clone(): Node {
var node2 = new Node;
for (var key in this) node2[key] = this[key];
let node2 = new Node;
for (let key in this) node2[key] = this[key];
return node2;
}
}

View File

@ -16,7 +16,7 @@ const pp = Parser.prototype;
pp.parseTopLevel = function (file, program) {
program.sourceType = this.options.sourceType;
this.parseBlockBody(program, true, tt.eof);
this.parseBlockBody(program, true, true, tt.eof);
file.program = this.finishNode(program, "Program");
file.comments = this.state.comments;
@ -30,11 +30,21 @@ const loopLabel = {kind: "loop"}, switchLabel = {kind: "switch"};
// TODO
pp.parseDirective = function () {
let node = this.startNode();
node.raw = this.input.slice(this.state.start, this.state.end);
node.value = node.raw.slice(1, -1); // remove quotes
let directiveLiteral = this.startNode();
let directive = this.startNode();
let raw = this.input.slice(this.state.start, this.state.end);
let val = directiveLiteral.value = raw.slice(1, -1); // remove quotes
this.addExtra(directiveLiteral, "raw", raw);
this.addExtra(directiveLiteral, "rawValue", val);
this.next();
return this.finishNode(node, "Directive");
directive.value = this.finishNode(directiveLiteral, "DirectiveLiteral");
this.semicolon();
return this.finishNode(directive, "Directive");
};
// Parse a single statement.
@ -89,16 +99,18 @@ pp.parseStatement = function (declaration, topLevel) {
case tt._export:
case tt._import:
if (!this.options.allowImportExportEverywhere) {
if (!topLevel)
if (!topLevel) {
this.raise(this.state.start, "'import' and 'export' may only appear at the top level");
}
if (!this.inModule)
if (!this.inModule) {
this.raise(this.state.start, "'import' and 'export' may appear only with 'sourceType: module'");
}
}
return starttype === tt._import ? this.parseImport(node) : this.parseExport(node);
case tt.name:
if (this.hasFeature("asyncFunctions") && this.state.value === "async") {
if (this.hasPlugin("asyncFunctions") && this.state.value === "async") {
// peek ahead and see if next token is a function
let state = this.state.clone();
this.next();
@ -147,7 +159,7 @@ pp.parseDecorators = function (allowExport) {
};
pp.parseDecorator = function () {
if (!this.hasFeature("decorators")) {
if (!this.hasPlugin("decorators")) {
this.unexpected();
}
let node = this.startNode();
@ -171,7 +183,8 @@ pp.parseBreakContinueStatement = function (node, keyword) {
// Verify that there is an actual destination to break or
// continue to.
for (var i = 0; i < this.state.labels.length; ++i) {
let i;
for (i = 0; i < this.state.labels.length; ++i) {
let lab = this.state.labels[i];
if (node.label == null || lab.name === node.label.name) {
if (lab.kind != null && (isBreak || lab.kind === "loop")) break;
@ -288,7 +301,8 @@ pp.parseSwitchStatement = function (node) {
// nodes. `cur` is used to keep the node that we are currently
// adding statements to.
for (var cur, sawDefault; !this.match(tt.braceR); ) {
let cur;
for (let sawDefault; !this.match(tt.braceR); ) {
if (this.match(tt._case) || this.match(tt._default)) {
let isCase = this.match(tt._case);
if (cur) this.finishNode(cur, "SwitchCase");
@ -304,8 +318,11 @@ pp.parseSwitchStatement = function (node) {
}
this.expect(tt.colon);
} else {
if (!cur) this.unexpected();
cur.consequent.push(this.parseStatement(true));
if (cur) {
cur.consequent.push(this.parseStatement(true));
} else {
this.unexpected();
}
}
}
if (cur) this.finishNode(cur, "SwitchCase");
@ -325,19 +342,23 @@ pp.parseThrowStatement = function (node) {
// Reused empty array added for node fields that are always empty.
var empty = [];
let empty = [];
pp.parseTryStatement = function (node) {
this.next();
node.block = this.parseBlock();
node.handler = null;
if (this.match(tt._catch)) {
let clause = this.startNode();
this.next();
this.expect(tt.parenL);
clause.param = this.parseBindingAtom();
this.checkLVal(clause.param, true, Object.create(null));
this.expect(tt.parenR);
clause.body = this.parseBlock();
node.handler = this.finishNode(clause, "CatchClause");
}
@ -416,35 +437,55 @@ pp.parseExpressionStatement = function (node, expr) {
// strict"` declarations when `allowStrict` is true (used for
// function bodies).
pp.parseBlock = function (allowStrict) {
pp.parseBlock = function (allowDirectives?) {
let node = this.startNode();
this.expect(tt.braceL);
this.parseBlockBody(node, allowStrict, tt.braceR);
this.parseBlockBody(node, allowDirectives, false, tt.braceR);
return this.finishNode(node, "BlockStatement");
};
// TODO
pp.parseBlockBody = function (node, allowStrict, end) {
pp.parseBlockBody = function (node, allowDirectives, topLevel, end) {
node.body = [];
node.directives = [];
let parsedNonDirective = false;
let oldStrict;
let octalPosition;
while (!this.eat(end)) {
if (!parsedNonDirective && this.match(tt.string)) {
let stmt = this.parseDirective();
node.directives.push(stmt);
if (allowDirectives && !parsedNonDirective && this.match(tt.string)) {
let oldState = this.state;
let lookahead = this.lookahead();
this.state = lookahead;
let isDirective = this.isLineTerminator();
this.state = oldState;
if (allowStrict && stmt.value === "use strict") {
oldStrict = this.state.strict;
this.setStrict(this.state.strict = true);
if (isDirective) {
if (this.state.containsOctal && !octalPosition) {
octalPosition = this.state.octalPosition;
}
let stmt = this.parseDirective();
node.directives.push(stmt);
if (allowDirectives && stmt.value.value === "use strict") {
oldStrict = this.state.strict;
this.state.strict = true;
this.setStrict(true);
if (octalPosition) {
this.raise(octalPosition, "Octal literal in strict mode");
}
}
continue;
}
} else {
parsedNonDirective = true;
node.body.push(this.parseStatement(true));
}
parsedNonDirective = true;
node.body.push(this.parseStatement(true, topLevel));
}
if (oldStrict === false) {
@ -514,25 +555,39 @@ pp.parseVarHead = function (decl) {
// `isStatement` parameter).
pp.parseFunction = function (node, isStatement, allowExpressionBody, isAsync, optionalId) {
this.initFunction(node, isAsync);
node.generator = this.eat(tt.star);
let oldInMethod = this.state.inMethod;
this.state.inMethod = false;
if (isStatement && !optionalId && !this.match(tt.name)) {
this.initFunction(node, isAsync);
if (this.match(tt.star)) {
if (node.async && !this.hasPlugin("asyncGenerators")) {
this.unexpected();
} else {
node.generator = true;
this.next();
}
}
if (isStatement && !optionalId && !this.match(tt.name) && !this.match(tt._yield)) {
this.unexpected();
}
if (this.match(tt.name)) {
node.id = this.parseIdentifier();
if (this.match(tt.name) || this.match(tt._yield)) {
node.id = this.parseBindingIdentifier();
}
this.parseFunctionParams(node);
this.parseFunctionBody(node, allowExpressionBody);
this.state.inMethod = oldInMethod;
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
};
pp.parseFunctionParams = function (node) {
this.expect(tt.parenL);
node.params = this.parseBindingList(tt.parenR, false, this.hasFeature("trailingFunctionCommas"));
node.params = this.parseBindingList(tt.parenR, false, this.hasPlugin("trailingFunctionCommas"));
};
// Parse a class declaration or literal (depending on the
@ -542,51 +597,99 @@ pp.parseClass = function (node, isStatement, optionalId) {
this.next();
this.parseClassId(node, isStatement, optionalId);
this.parseClassSuper(node);
var classBody = this.startNode();
this.parseClassBody(node);
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
};
pp.isClassProperty = function () {
return this.match(tt.eq) || this.isLineTerminator();
};
pp.parseClassBody = function (node) {
// class bodies are implicitly strict
let oldStrict = this.state.strict;
this.state.strict = true;
let hadConstructorCall = false;
let hadConstructor = false;
classBody.body = [];
this.expect(tt.braceL);
let decorators = [];
let classBody = this.startNode();
classBody.body = [];
this.expect(tt.braceL);
while (!this.eat(tt.braceR)) {
if (this.eat(tt.semi)) continue;
if (this.eat(tt.semi)) {
continue;
}
if (this.match(tt.at)) {
decorators.push(this.parseDecorator());
continue;
}
var method = this.startNode();
let method = this.startNode();
// steal the decorators if there are any
if (decorators.length) {
method.decorators = decorators;
decorators = [];
}
let isConstructorCall = false;
let isMaybeStatic = this.match(tt.name) && this.state.value === "static";
var isGenerator = this.eat(tt.star), isAsync = false;
let isGenerator = this.eat(tt.star);
let isGetSet = false;
let isAsync = false;
this.parsePropertyName(method);
method.static = isMaybeStatic && !this.match(tt.parenL);
if (method.static) {
if (isGenerator) this.unexpected();
isGenerator = this.eat(tt.star);
this.parsePropertyName(method);
}
if (!isGenerator && method.key.type === "Identifier" && !method.computed && this.isClassProperty()) {
classBody.body.push(this.parseClassProperty(method));
continue;
if (!isGenerator && method.key.type === "Identifier" && !method.computed) {
if (this.isClassProperty()) {
classBody.body.push(this.parseClassProperty(method));
continue;
}
if (this.hasPlugin("classConstructorCall") && method.key.name === "call" && this.match(tt.name) && this.state.value === "constructor") {
isConstructorCall = true;
this.parsePropertyName(method);
}
}
if (this.hasFeature("asyncFunctions") && !this.match(tt.parenL) &&
!method.computed && method.key.type === "Identifier" && method.key.name === "async") {
let isAsyncMethod = this.hasPlugin("asyncFunctions") && !this.match(tt.parenL) && !method.computed && method.key.type === "Identifier" && method.key.name === "async";
if (isAsyncMethod) {
if (this.hasPlugin("asyncGenerators") && this.eat(tt.star)) isGenerator = true;
isAsync = true;
this.parsePropertyName(method);
}
let isGetSet = false;
method.kind = "method";
if (!method.computed) {
let {key} = method;
let { key } = method;
// handle get/set methods
// eg. class Foo { get bar() {} set bar() {} }
if (!isAsync && !isGenerator && key.type === "Identifier" && !this.match(tt.parenL) && (key.name === "get" || key.name === "set")) {
isGetSet = true;
method.kind = key.name;
key = this.parsePropertyName(method);
}
if (!method.static && (key.type === "Identifier" && key.name === "constructor" ||
key.type === "StringLiteral" && key.value === "constructor")) {
// disallow invalid constructors
let isConstructor = !isConstructorCall && !method.static && (
(key.type === "Identifier" && key.name === "constructor") ||
(key.type === "StringLiteral" && key.value === "constructor")
);
if (isConstructor) {
if (hadConstructor) this.raise(key.start, "Duplicate constructor in the same class");
if (isGetSet) this.raise(key.start, "Constructor can't have get/set modifier");
if (isGenerator) this.raise(key.start, "Constructor can't be a generator");
@ -594,15 +697,37 @@ pp.parseClass = function (node, isStatement, optionalId) {
method.kind = "constructor";
hadConstructor = true;
}
// disallow static prototype method
let isStaticPrototype = method.static && (
(key.type === "Identifier" && key.name === "prototype") ||
(key.type === "StringLiteral" && key.value === "prototype")
);
if (isStaticPrototype) {
this.raise(key.start, "Classes may not have static property named prototype");
}
}
if (method.kind === "constructor" && method.decorators) {
// convert constructor to a constructor call
if (isConstructorCall) {
if (hadConstructorCall) this.raise(method.start, "Duplicate constructor call in the same class");
method.kind = "constructorCall";
hadConstructorCall = true;
}
// disallow decorators on class constructors
if ((method.kind === "constructor" || method.kind === "constructorCall") && method.decorators) {
this.raise(method.start, "You can't attach decorators to a class constructor");
}
this.parseClassMethod(classBody, method, isGenerator, isAsync);
// get methods aren't allowed to have any parameters
// set methods must have exactly 1 parameter
if (isGetSet) {
let paramCount = method.kind === "get" ? 0 : 1;
if (method.value.params.length !== paramCount) {
let start = method.value.start;
if (method.params.length !== paramCount) {
let start = method.start;
if (method.kind === "get") {
this.raise(start, "getter should have no params");
} else {
@ -617,16 +742,13 @@ pp.parseClass = function (node, isStatement, optionalId) {
}
node.body = this.finishNode(classBody, "ClassBody");
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
};
pp.isClassProperty = function () {
return this.match(tt.eq) || (this.match(tt.semi) || this.canInsertSemicolon());
this.state.strict = oldStrict;
};
pp.parseClassProperty = function (node) {
if (this.match(tt.eq)) {
if (!this.hasFeature("classProperties")) this.unexpected();
if (!this.hasPlugin("classProperties")) this.unexpected();
this.next();
node.value = this.parseMaybeAssign();
} else {
@ -637,8 +759,8 @@ pp.parseClassProperty = function (node) {
};
pp.parseClassMethod = function (classBody, method, isGenerator, isAsync) {
method.value = this.parseMethod(isGenerator, isAsync);
classBody.body.push(this.finishNode(method, "MethodDefinition"));
this.parseMethod(method, isGenerator, isAsync);
classBody.body.push(this.finishNode(method, "ClassMethod"));
};
pp.parseClassId = function (node, isStatement, optionalId) {
@ -665,7 +787,7 @@ pp.parseExport = function (node) {
if (this.match(tt.star)) {
let specifier = this.startNode();
this.next();
if (this.hasFeature("exportExtensions") && this.eatContextual("as")) {
if (this.hasPlugin("exportExtensions") && this.eatContextual("as")) {
specifier.exported = this.parseIdentifier();
node.specifiers = [this.finishNode(specifier, "ExportNamespaceSpecifier")];
this.parseExportSpecifiersMaybe(node);
@ -674,7 +796,7 @@ pp.parseExport = function (node) {
this.parseExportFrom(node, true);
return this.finishNode(node, "ExportAllDeclaration");
}
} else if (this.hasFeature("exportExtensions") && this.isExportDefaultSpecifier()) {
} else if (this.hasPlugin("exportExtensions") && this.isExportDefaultSpecifier()) {
let specifier = this.startNode();
specifier.exported = this.parseIdentifier(true);
node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
@ -730,7 +852,7 @@ pp.isExportDefaultSpecifier = function () {
return false;
}
var lookahead = this.lookahead();
let lookahead = this.lookahead();
return lookahead.type === tt.comma || (lookahead.type === tt.name && lookahead.value === "from");
};
@ -756,12 +878,12 @@ pp.parseExportFrom = function (node, expect?) {
};
pp.shouldParseExportDeclaration = function () {
return this.hasFeature("asyncFunctions") && this.isContextual("async");
return this.hasPlugin("asyncFunctions") && this.isContextual("async");
};
pp.checkExport = function (node) {
if (this.state.decorators.length) {
var isClass = node.declaration && (node.declaration.type === "ClassDeclaration" || node.declaration.type === "ClassExpression");
let isClass = node.declaration && (node.declaration.type === "ClassDeclaration" || node.declaration.type === "ClassExpression");
if (!node.declaration || !isClass) {
this.raise(node.start, "You can only use decorators on an export when exporting a class");
}
@ -826,10 +948,10 @@ pp.parseImport = function (node) {
// Parses a comma-separated list of module imports.
pp.parseImportSpecifiers = function (node) {
var first = true;
let first = true;
if (this.match(tt.name)) {
// import defaultObj, { x, y as z } from '...'
var startPos = this.state.start, startLoc = this.state.startLoc;
let startPos = this.state.start, startLoc = this.state.startLoc;
node.specifiers.push(this.parseImportSpecifierDefault(this.parseIdentifier(), startPos, startLoc));
if (!this.eat(tt.comma)) return;
}
@ -862,7 +984,7 @@ pp.parseImportSpecifiers = function (node) {
};
pp.parseImportSpecifierDefault = function (id, startPos, startLoc) {
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.local = id;
this.checkLVal(node.local, true);
return this.finishNode(node, "ImportDefaultSpecifier");

View File

@ -13,7 +13,7 @@ const pp = Parser.prototype;
pp.addExtra = function (node, key, val) {
if (!node) return;
var extra = node.extra = node.extra || {};
let extra = node.extra = node.extra || {};
extra[key] = val;
};

View File

@ -3,13 +3,13 @@
import { types as tt } from "../tokenizer/types";
import Parser from "../parser";
var pp = Parser.prototype;
let pp = Parser.prototype;
pp.flowParseTypeInitialiser = function (tok) {
var oldInType = this.state.inType;
let oldInType = this.state.inType;
this.state.inType = true;
this.expect(tok || tt.colon);
var type = this.flowParseType();
let type = this.flowParseType();
this.state.inType = oldInType;
return type;
};
@ -23,10 +23,10 @@ pp.flowParseDeclareClass = function (node) {
pp.flowParseDeclareFunction = function (node) {
this.next();
var id = node.id = this.parseIdentifier();
let id = node.id = this.parseIdentifier();
var typeNode = this.startNode();
var typeContainer = this.startNode();
let typeNode = this.startNode();
let typeContainer = this.startNode();
if (this.isRelational("<")) {
typeNode.typeParameters = this.flowParseTypeParameterDeclaration();
@ -35,7 +35,7 @@ pp.flowParseDeclareFunction = function (node) {
}
this.expect(tt.parenL);
var tmp = this.flowParseFunctionTypeParams();
let tmp = this.flowParseFunctionTypeParams();
typeNode.params = tmp.params;
typeNode.rest = tmp.rest;
this.expect(tt.parenR);
@ -81,11 +81,11 @@ pp.flowParseDeclareModule = function (node) {
node.id = this.parseIdentifier();
}
var bodyNode = node.body = this.startNode();
var body = bodyNode.body = [];
let bodyNode = node.body = this.startNode();
let body = bodyNode.body = [];
this.expect(tt.braceL);
while (!this.match(tt.braceR)) {
var node2 = this.startNode();
let node2 = this.startNode();
// todo: declare check
this.next();
@ -122,7 +122,7 @@ pp.flowParseInterfaceish = function (node, allowStatic) {
};
pp.flowParseInterfaceExtends = function () {
var node = this.startNode();
let node = this.startNode();
node.id = this.parseIdentifier();
if (this.isRelational("<")) {
@ -159,7 +159,7 @@ pp.flowParseTypeAlias = function (node) {
// Type annotations
pp.flowParseTypeParameterDeclaration = function () {
var node = this.startNode();
let node = this.startNode();
node.params = [];
this.expectRelational("<");
@ -175,7 +175,7 @@ pp.flowParseTypeParameterDeclaration = function () {
};
pp.flowParseTypeParameterInstantiation = function () {
var node = this.startNode(), oldInType = this.state.inType;
let node = this.startNode(), oldInType = this.state.inType;
node.params = [];
this.state.inType = true;
@ -238,7 +238,7 @@ pp.flowParseObjectTypeMethodish = function (node) {
};
pp.flowParseObjectTypeMethod = function (startPos, startLoc, isStatic, key) {
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(startPos, startLoc));
node.static = isStatic;
node.key = key;
@ -248,7 +248,7 @@ pp.flowParseObjectTypeMethod = function (startPos, startLoc, isStatic, key) {
};
pp.flowParseObjectTypeCallProperty = function (node, isStatic) {
var valueNode = this.startNode();
let valueNode = this.startNode();
node.static = isStatic;
node.value = this.flowParseObjectTypeMethodish(valueNode);
this.flowObjectTypeSemicolon();
@ -256,10 +256,10 @@ pp.flowParseObjectTypeCallProperty = function (node, isStatic) {
};
pp.flowParseObjectType = function (allowStatic) {
var nodeStart = this.startNode();
var node;
var propertyKey;
var isStatic;
let nodeStart = this.startNode();
let node;
let propertyKey;
let isStatic;
nodeStart.callProperties = [];
nodeStart.properties = [];
@ -268,8 +268,8 @@ pp.flowParseObjectType = function (allowStatic) {
this.expect(tt.braceL);
while (!this.match(tt.braceR)) {
var optional = false;
var startPos = this.state.start, startLoc = this.state.startLoc;
let optional = false;
let startPos = this.state.start, startLoc = this.state.startLoc;
node = this.startNode();
if (allowStatic && this.isContextual("static")) {
this.next();
@ -315,13 +315,13 @@ pp.flowObjectTypeSemicolon = function () {
};
pp.flowParseGenericType = function (startPos, startLoc, id) {
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.typeParameters = null;
node.id = id;
while (this.eat(tt.dot)) {
var node2 = this.startNodeAt(startPos, startLoc);
let node2 = this.startNodeAt(startPos, startLoc);
node2.qualification = node.id;
node2.id = this.parseIdentifier();
node.id = this.finishNode(node2, "QualifiedTypeIdentifier");
@ -335,14 +335,14 @@ pp.flowParseGenericType = function (startPos, startLoc, id) {
};
pp.flowParseTypeofType = function () {
var node = this.startNode();
let node = this.startNode();
this.expect(tt._typeof);
node.argument = this.flowParsePrimaryType();
return this.finishNode(node, "TypeofTypeAnnotation");
};
pp.flowParseTupleType = function () {
var node = this.startNode();
let node = this.startNode();
node.types = [];
this.expect(tt.bracketL);
// We allow trailing commas
@ -356,8 +356,8 @@ pp.flowParseTupleType = function () {
};
pp.flowParseFunctionTypeParam = function () {
var optional = false;
var node = this.startNode();
let optional = false;
let node = this.startNode();
node.name = this.parseIdentifier();
if (this.eat(tt.question)) {
optional = true;
@ -368,7 +368,7 @@ pp.flowParseFunctionTypeParam = function () {
};
pp.flowParseFunctionTypeParams = function () {
var ret = { params: [], rest: null };
let ret = { params: [], rest: null };
while (this.match(tt.name)) {
ret.params.push(this.flowParseFunctionTypeParam());
if (!this.match(tt.parenR)) {
@ -411,11 +411,11 @@ pp.flowIdentToTypeAnnotation = function (startPos, startLoc, node, id) {
// primary types are kind of like primary expressions...they're the
// primitives with which other types are constructed.
pp.flowParsePrimaryType = function () {
var startPos = this.state.start, startLoc = this.state.startLoc;
var node = this.startNode();
var tmp;
var type;
var isGroupedType = false;
let startPos = this.state.start, startLoc = this.state.startLoc;
let node = this.startNode();
let tmp;
let type;
let isGroupedType = false;
switch (this.state.type) {
case tt.name:
@ -449,7 +449,7 @@ pp.flowParsePrimaryType = function () {
// Check to see if this is actually a grouped type
if (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {
if (this.match(tt.name)) {
var token = this.lookahead().type;
let token = this.lookahead().type;
isGroupedType = token !== tt.question && token !== tt.colon;
} else {
isGroupedType = true;
@ -490,8 +490,9 @@ pp.flowParsePrimaryType = function () {
return this.finishNode(node, "FunctionTypeAnnotation");
case tt.string:
node.rawValue = node.value = this.state.value;
node.raw = this.input.slice(this.state.start, this.state.end);
node.value = this.state.value;
this.addExtra(node, "rawValue", node.value);
this.addExtra(node, "raw", this.input.slice(this.state.start, this.state.end));
this.next();
return this.finishNode(node, "StringLiteralTypeAnnotation");
@ -501,8 +502,9 @@ pp.flowParsePrimaryType = function () {
return this.finishNode(node, "BooleanLiteralTypeAnnotation");
case tt.num:
node.rawValue = node.value = this.state.value;
node.raw = this.input.slice(this.state.start, this.state.end);
node.value = this.state.value;
this.addExtra(node, "rawValue", node.value);
this.addExtra(node, "raw", this.input.slice(this.state.start, this.state.end));
this.next();
return this.finishNode(node, "NumberLiteralTypeAnnotation");
@ -516,8 +518,8 @@ pp.flowParsePrimaryType = function () {
};
pp.flowParsePostfixType = function () {
var node = this.startNode();
var type = node.elementType = this.flowParsePrimaryType();
let node = this.startNode();
let type = node.elementType = this.flowParsePrimaryType();
if (this.match(tt.bracketL)) {
this.expect(tt.bracketL);
this.expect(tt.bracketR);
@ -528,7 +530,7 @@ pp.flowParsePostfixType = function () {
};
pp.flowParsePrefixType = function () {
var node = this.startNode();
let node = this.startNode();
if (this.eat(tt.question)) {
node.typeAnnotation = this.flowParsePrefixType();
return this.finishNode(node, "NullableTypeAnnotation");
@ -538,8 +540,8 @@ pp.flowParsePrefixType = function () {
};
pp.flowParseIntersectionType = function () {
var node = this.startNode();
var type = this.flowParsePrefixType();
let node = this.startNode();
let type = this.flowParsePrefixType();
node.types = [type];
while (this.eat(tt.bitwiseAND)) {
node.types.push(this.flowParsePrefixType());
@ -548,8 +550,8 @@ pp.flowParseIntersectionType = function () {
};
pp.flowParseUnionType = function () {
var node = this.startNode();
var type = this.flowParseIntersectionType();
let node = this.startNode();
let type = this.flowParseIntersectionType();
node.types = [type];
while (this.eat(tt.bitwiseOR)) {
node.types.push(this.flowParseIntersectionType());
@ -558,22 +560,22 @@ pp.flowParseUnionType = function () {
};
pp.flowParseType = function () {
var oldInType = this.state.inType;
let oldInType = this.state.inType;
this.state.inType = true;
var type = this.flowParseUnionType();
let type = this.flowParseUnionType();
this.state.inType = oldInType;
return type;
};
pp.flowParseTypeAnnotation = function () {
var node = this.startNode();
let node = this.startNode();
node.typeAnnotation = this.flowParseTypeInitialiser();
return this.finishNode(node, "TypeAnnotation");
};
pp.flowParseTypeAnnotatableIdentifier = function (requireTypeAnnotation, canBeOptionalParam) {
var ident = this.parseIdentifier();
var isOptionalParam = false;
let ident = this.parseIdentifier();
let isOptionalParam = false;
if (canBeOptionalParam && this.eat(tt.question)) {
this.expect(tt.question);
@ -612,7 +614,7 @@ export default function (instance) {
return function (declaration, topLevel) {
// strict mode handling of `interface` since it's a reserved word
if (this.state.strict && this.match(tt.name) && this.state.value === "interface") {
var node = this.startNode();
let node = this.startNode();
this.next();
return this.flowParseInterface(node);
} else {
@ -652,7 +654,7 @@ export default function (instance) {
instance.extend("parseParenItem", function () {
return function (node, startLoc, startPos, forceArrow?) {
if (this.match(tt.colon)) {
var typeCastNode = this.startNodeAt(startLoc, startPos);
let typeCastNode = this.startNodeAt(startLoc, startPos);
typeCastNode.expression = node;
typeCastNode.typeAnnotation = this.flowParseTypeAnnotation();
@ -662,7 +664,7 @@ export default function (instance) {
if (this.eat(tt.arrow)) {
// ((lol): number => {});
var func = this.parseArrowExpression(this.startNodeAt(startLoc, startPos), [node]);
let func = this.parseArrowExpression(this.startNodeAt(startLoc, startPos), [node]);
func.returnType = typeCastNode.typeAnnotation;
return func;
} else {
@ -689,7 +691,7 @@ export default function (instance) {
if (this.isContextual("type")) {
node.exportKind = "type";
var declarationNode = this.startNode();
let declarationNode = this.startNode();
this.next();
if (this.match(tt.braceL)) {
@ -754,8 +756,8 @@ export default function (instance) {
// turn type casts that we found in function parameter head into type annotated params
instance.extend("toAssignableList", function (inner) {
return function (exprList, isBinding) {
for (var i = 0; i < exprList.length; i++) {
var expr = exprList[i];
for (let i = 0; i < exprList.length; i++) {
let expr = exprList[i];
if (expr && expr.type === "TypeCastExpression") {
exprList[i] = typeCastToParameter(expr);
}
@ -768,8 +770,8 @@ export default function (instance) {
// type casts that we've found that are illegal in this context
instance.extend("toReferencedList", function () {
return function (exprList) {
for (var i = 0; i < exprList.length; i++) {
var expr = exprList[i];
for (let i = 0; i < exprList.length; i++) {
let expr = exprList[i];
if (expr && expr._exprListItem && expr.type === "TypeCastExpression") {
this.raise(expr.start, "Unexpected type cast");
}
@ -783,8 +785,8 @@ export default function (instance) {
// the position where this function is cal;ed
instance.extend("parseExprListItem", function (inner) {
return function (allowEmpty, refShorthandDefaultPos) {
var container = this.startNode();
var node = inner.call(this, allowEmpty, refShorthandDefaultPos);
let container = this.startNode();
let node = inner.call(this, allowEmpty, refShorthandDefaultPos);
if (this.match(tt.colon)) {
container._exprListItem = true;
container.expression = node;
@ -816,13 +818,11 @@ export default function (instance) {
// parse type parameters for class methods
instance.extend("parseClassMethod", function () {
return function (classBody, method, isGenerator, isAsync) {
var typeParameters;
if (this.isRelational("<")) {
typeParameters = this.flowParseTypeParameterDeclaration();
method.typeParameters = this.flowParseTypeParameterDeclaration();
}
method.value = this.parseMethod(isGenerator, isAsync);
method.value.typeParameters = typeParameters;
classBody.body.push(this.finishNode(method, "MethodDefinition"));
this.parseMethod(method, isGenerator, isAsync);
classBody.body.push(this.finishNode(method, "ClassMethod"));
};
});
@ -835,7 +835,7 @@ export default function (instance) {
}
if (this.isContextual("implements")) {
this.next();
var implemented = node.implements = [];
let implemented = node.implements = [];
do {
let node = this.startNode();
node.id = this.parseIdentifier();
@ -853,7 +853,7 @@ export default function (instance) {
// parse type parameters for object method shorthand
instance.extend("parseObjPropValue", function (inner) {
return function (prop) {
var typeParameters;
let typeParameters;
// method shorthand
if (this.isRelational("<")) {
@ -865,7 +865,7 @@ export default function (instance) {
// add typeParameters if we found them
if (typeParameters) {
prop.value.typeParameters = typeParameters;
(prop.value || prop).typeParameters = typeParameters;
}
};
});
@ -889,14 +889,14 @@ export default function (instance) {
return function (node) {
node.importKind = "value";
var kind = null;
let kind = null;
if (this.match(tt._typeof)) {
kind = "typeof";
} else if (this.isContextual("type")) {
kind = "type";
}
if (kind) {
var lh = this.lookahead();
let lh = this.lookahead();
if ((lh.type === tt.name && lh.value !== "from") || lh.type === tt.braceL || lh.type === tt.star) {
this.next();
node.importKind = kind;
@ -917,7 +917,7 @@ export default function (instance) {
};
});
// parse flow type annotations on variable declarator heads - var foo: string = bar
// parse flow type annotations on variable declarator heads - let foo: string = bar
instance.extend("parseVarHead", function (inner) {
return function (decl) {
inner.call(this, decl);
@ -928,7 +928,7 @@ export default function (instance) {
};
});
// parse the return type of an async arrow function - var foo = (async (): number => {});
// parse the return type of an async arrow function - let foo = (async (): number => {});
instance.extend("parseAsyncArrowFromCallExpression", function (inner) {
return function (node, call) {
if (this.match(tt.colon)) {
@ -953,7 +953,7 @@ export default function (instance) {
startLoc = startLoc || this.state.startLoc;
if (this.lookahead().type === tt.parenR) {
// var foo = (): number => {};
// let foo = (): number => {};
this.expect(tt.parenL);
this.expect(tt.parenR);
@ -962,11 +962,11 @@ export default function (instance) {
this.expect(tt.arrow);
return this.parseArrowExpression(node, [], isAsync);
} else {
// var foo = (foo): number => {};
// let foo = (foo): number => {};
let node = inner.call(this, startPos, startLoc, canBeArrow, isAsync);
if (this.match(tt.colon)) {
var state = this.state.clone();
let state = this.state.clone();
try {
return this.parseParenItem(node, startPos, startLoc, true);
} catch (err) {

View File

@ -26,7 +26,7 @@ tt.jsxTagStart.updateContext = function() {
};
tt.jsxTagEnd.updateContext = function(prevType) {
var out = this.state.context.pop();
let out = this.state.context.pop();
if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
this.state.context.pop();
this.state.exprAllowed = this.curContext() === tc.j_expr;
@ -35,18 +35,19 @@ tt.jsxTagEnd.updateContext = function(prevType) {
}
};
var pp = Parser.prototype;
let pp = Parser.prototype;
// Reads inline JSX contents token.
pp.jsxReadToken = function() {
var out = "", chunkStart = this.state.pos;
let out = "";
let chunkStart = this.state.pos;
for (;;) {
if (this.state.pos >= this.input.length) {
this.raise(this.state.start, "Unterminated JSX contents");
}
var ch = this.input.charCodeAt(this.state.pos);
let ch = this.input.charCodeAt(this.state.pos);
switch (ch) {
case 60: // "<"
@ -80,8 +81,8 @@ pp.jsxReadToken = function() {
};
pp.jsxReadNewLine = function(normalizeCRLF) {
var ch = this.input.charCodeAt(this.state.pos);
var out;
let ch = this.input.charCodeAt(this.state.pos);
let out;
++this.state.pos;
if (ch === 13 && this.input.charCodeAt(this.state.pos) === 10) {
++this.state.pos;
@ -96,13 +97,14 @@ pp.jsxReadNewLine = function(normalizeCRLF) {
};
pp.jsxReadString = function(quote) {
var out = "", chunkStart = ++this.state.pos;
let out = "";
let chunkStart = ++this.state.pos;
for (;;) {
if (this.state.pos >= this.input.length) {
this.raise(this.state.start, "Unterminated string constant");
}
var ch = this.input.charCodeAt(this.state.pos);
let ch = this.input.charCodeAt(this.state.pos);
if (ch === quote) break;
if (ch === 38) { // "&"
out += this.input.slice(chunkStart, this.state.pos);
@ -121,10 +123,12 @@ pp.jsxReadString = function(quote) {
};
pp.jsxReadEntity = function() {
var str = "", count = 0, entity;
var ch = this.input[this.state.pos];
let str = "";
let count = 0;
let entity;
let ch = this.input[this.state.pos];
var startPos = ++this.state.pos;
let startPos = ++this.state.pos;
while (this.state.pos < this.input.length && count++ < 10) {
ch = this.input[this.state.pos++];
if (ch === ";") {
@ -161,7 +165,8 @@ pp.jsxReadEntity = function() {
// by isIdentifierStart in readToken.
pp.jsxReadWord = function() {
var ch, start = this.state.pos;
let ch;
let start = this.state.pos;
do {
ch = this.input.charCodeAt(++this.state.pos);
} while (isIdentifierChar(ch) || ch === 45); // "-"
@ -187,7 +192,7 @@ function getQualifiedJSXName(object) {
// Parse next token as JSX identifier
pp.jsxParseIdentifier = function() {
var node = this.startNode();
let node = this.startNode();
if (this.match(tt.jsxName)) {
node.name = this.state.value;
} else if (this.state.type.keyword) {
@ -202,11 +207,11 @@ pp.jsxParseIdentifier = function() {
// Parse namespaced identifier.
pp.jsxParseNamespacedName = function() {
var startPos = this.state.start, startLoc = this.state.startLoc;
var name = this.jsxParseIdentifier();
let startPos = this.state.start, startLoc = this.state.startLoc;
let name = this.jsxParseIdentifier();
if (!this.eat(tt.colon)) return name;
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.namespace = name;
node.name = this.jsxParseIdentifier();
return this.finishNode(node, "JSXNamespacedName");
@ -216,10 +221,10 @@ pp.jsxParseNamespacedName = function() {
// or single identifier.
pp.jsxParseElementName = function() {
var startPos = this.state.start, startLoc = this.state.startLoc;
var node = this.jsxParseNamespacedName();
let startPos = this.state.start, startLoc = this.state.startLoc;
let node = this.jsxParseNamespacedName();
while (this.eat(tt.dot)) {
var newNode = this.startNodeAt(startPos, startLoc);
let newNode = this.startNodeAt(startPos, startLoc);
newNode.object = node;
newNode.property = this.jsxParseIdentifier();
node = this.finishNode(newNode, "JSXMemberExpression");
@ -230,7 +235,7 @@ pp.jsxParseElementName = function() {
// Parses any type of JSX attribute value.
pp.jsxParseAttributeValue = function() {
var node;
let node;
switch (this.state.type) {
case tt.braceL:
node = this.jsxParseExpressionContainer();
@ -243,7 +248,7 @@ pp.jsxParseAttributeValue = function() {
case tt.jsxTagStart:
case tt.string:
node = this.parseExprAtom();
node.rawValue = null;
node.extra = null;
return node;
default:
@ -251,27 +256,20 @@ pp.jsxParseAttributeValue = function() {
}
};
// JSXEmptyExpression is unique type since it doesn"t actually parse anything,
// JSXEmptyExpression is unique type since it doesn't actually parse anything,
// and so it should start at the end of last read token (left brace) and finish
// at the beginning of the next one (right brace).
pp.jsxParseEmptyExpression = function() {
var tmp = this.state.start;
this.state.start = this.state.lastTokEnd;
this.state.lastTokEnd = tmp;
tmp = this.state.startLoc;
this.state.startLoc = this.state.lastTokEndLoc;
this.state.lastTokEndLoc = tmp;
return this.finishNode(this.startNode(), "JSXEmptyExpression");
let node = this.startNodeAt(this.lastTokEnd, this.lastTokEndLoc);
return this.finishNodeAt(node, "JSXEmptyExpression", this.start, this.startLoc);
};
// Parses JSX expression enclosed into curly brackets.
pp.jsxParseExpressionContainer = function() {
var node = this.startNode();
let node = this.startNode();
this.next();
if (this.match(tt.braceR)) {
node.expression = this.jsxParseEmptyExpression();
@ -285,7 +283,7 @@ pp.jsxParseExpressionContainer = function() {
// Parses following JSX attribute name-value pair.
pp.jsxParseAttribute = function() {
var node = this.startNode();
let node = this.startNode();
if (this.eat(tt.braceL)) {
this.expect(tt.ellipsis);
node.argument = this.parseMaybeAssign();
@ -300,7 +298,7 @@ pp.jsxParseAttribute = function() {
// Parses JSX opening tag starting after "<".
pp.jsxParseOpeningElementAt = function(startPos, startLoc) {
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.attributes = [];
node.name = this.jsxParseElementName();
while (!this.match(tt.slash) && !this.match(tt.jsxTagEnd)) {
@ -314,7 +312,7 @@ pp.jsxParseOpeningElementAt = function(startPos, startLoc) {
// Parses JSX closing tag starting after "</".
pp.jsxParseClosingElementAt = function(startPos, startLoc) {
var node = this.startNodeAt(startPos, startLoc);
let node = this.startNodeAt(startPos, startLoc);
node.name = this.jsxParseElementName();
this.expect(tt.jsxTagEnd);
return this.finishNode(node, "JSXClosingElement");
@ -324,10 +322,10 @@ pp.jsxParseClosingElementAt = function(startPos, startLoc) {
// (starting after "<"), attributes, contents and closing tag.
pp.jsxParseElementAt = function(startPos, startLoc) {
var node = this.startNodeAt(startPos, startLoc);
var children = [];
var openingElement = this.jsxParseOpeningElementAt(startPos, startLoc);
var closingElement = null;
let node = this.startNodeAt(startPos, startLoc);
let children = [];
let openingElement = this.jsxParseOpeningElementAt(startPos, startLoc);
let closingElement = null;
if (!openingElement.selfClosing) {
contents: for (;;) {
@ -375,7 +373,7 @@ pp.jsxParseElementAt = function(startPos, startLoc) {
// Parses entire JSX element from current position.
pp.jsxParseElement = function() {
var startPos = this.state.start, startLoc = this.state.startLoc;
let startPos = this.state.start, startLoc = this.state.startLoc;
this.next();
return this.jsxParseElementAt(startPos, startLoc);
};
@ -384,9 +382,9 @@ export default function(instance) {
instance.extend("parseExprAtom", function(inner) {
return function(refShortHandDefaultPos) {
if (this.match(tt.jsxText)) {
var node = this.parseLiteral(this.state.value, "JSXText");
let node = this.parseLiteral(this.state.value, "JSXText");
// https://github.com/babel/babel/issues/2078
node.rawValue = null;
node.extra = null;
return node;
} else if (this.match(tt.jsxTagStart)) {
return this.jsxParseElement();
@ -398,7 +396,7 @@ export default function(instance) {
instance.extend("readToken", function(inner) {
return function(code) {
var context = this.curContext();
let context = this.curContext();
if (context === tc.j_expr) {
return this.jsxReadToken();
@ -431,7 +429,7 @@ export default function(instance) {
instance.extend("updateContext", function(inner) {
return function(prevType) {
if (this.match(tt.braceL)) {
var curContext = this.curContext();
let curContext = this.curContext();
if (curContext === tc.j_oTag) {
this.state.context.push(tc.b_expr);
} else if (curContext === tc.j_expr) {

View File

@ -79,30 +79,20 @@ export default class Tokenizer {
// TODO
isKeyword(word) {
if (!this.state.strict) {
if (word === "yield" && !this.state.inGenerator) {
return false;
}
if (word === "let") {
// check if next token is a name, braceL or bracketL, if so, it's a keyword!
}
}
return isKeyword(word);
}
// TODO
lookahead() {
var old = this.state;
let old = this.state;
this.state = old.clone(true);
this.isLookahead = true;
this.next();
this.isLookahead = false;
var curr = this.state.clone(true);
let curr = this.state.clone(true);
this.state = old;
return curr;
}
@ -132,6 +122,8 @@ export default class Tokenizer {
let curContext = this.curContext();
if (!curContext || !curContext.preserveSpace) this.skipSpace();
this.state.containsOctal = false;
this.state.octalPosition = null;
this.state.start = this.state.pos;
this.state.startLoc = this.state.curPosition();
if (this.state.pos >= this.input.length) return this.finishToken(tt.eof);
@ -162,7 +154,7 @@ export default class Tokenizer {
}
pushComment(block, text, start, end, startLoc, endLoc) {
var comment = {
let comment = {
type: block ? "CommentBlock" : "CommentLine",
value: text,
start: start,
@ -308,11 +300,11 @@ export default class Tokenizer {
}
readToken_mult_modulo(code) { // '%*'
var type = code === 42 ? tt.star : tt.modulo;
var width = 1;
var next = this.input.charCodeAt(this.state.pos + 1);
let type = code === 42 ? tt.star : tt.modulo;
let width = 1;
let next = this.input.charCodeAt(this.state.pos + 1);
if (next === 42 && this.hasFeature("exponentiationOperator")) { // '*'
if (next === 42 && this.hasPlugin("exponentiationOperator")) { // '*'
width++;
next = this.input.charCodeAt(this.state.pos + 2);
type = tt.exponent;
@ -415,7 +407,7 @@ export default class Tokenizer {
case 125: ++this.state.pos; return this.finishToken(tt.braceR);
case 58:
if (this.hasFeature("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) {
if (this.hasPlugin("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) {
return this.finishOp(tt.doubleColon, 2);
} else {
++this.state.pos;
@ -694,8 +686,14 @@ export default class Tokenizer {
octalStr = octalStr.slice(0, -1);
octal = parseInt(octalStr, 8);
}
if (octal > 0 && (this.state.strict || inTemplate)) {
this.raise(this.state.pos - 2, "Octal literal in strict mode");
if (octal > 0) {
if (!this.state.containsOctal) {
this.state.containsOctal = true;
this.state.octalPosition = this.state.pos - 2;
}
if (this.state.strict || inTemplate) {
this.raise(this.state.pos - 2, "Octal literal in strict mode");
}
}
this.state.pos += octalStr.length - 1;
return String.fromCharCode(octal);

View File

@ -14,7 +14,7 @@ export default class State {
this.potentialArrowAt = -1;
this.inFunction = this.inGenerator = false;
this.inMethod = this.inFunction = this.inGenerator = this.inAsync = false;
this.labels = [];
@ -42,7 +42,8 @@ export default class State {
this.context = [ct.b_stat];
this.exprAllowed = true;
this.containsEsc = false;
this.containsEsc = this.containsOctal = false;
this.octalPosition = null;
return this;
}
@ -59,6 +60,7 @@ export default class State {
// Flags to track whether we are in a function, a generator.
inFunction: boolean;
inGenerator: boolean;
inMethod: boolean;
// Labels in scope.
labels: Array<Object>;
@ -115,16 +117,20 @@ export default class State {
// escape sequences must not be interpreted as keywords.
containsEsc: boolean;
// TODO
containsOctal: boolean;
octalPosition: ?number;
curPosition() {
return new Position(this.curLine, this.pos - this.lineStart);
}
clone(skipArrays?) {
var state = new State;
for (var key in this) {
var val = this[key];
let state = new State;
for (let key in this) {
let val = this[key];
if (!skipArrays && Array.isArray(val)) {
if ((!skipArrays || key === "context") && Array.isArray(val)) {
val = val.slice();
}

View File

@ -115,7 +115,7 @@ kw("catch");
kw("continue");
kw("debugger");
kw("default", beforeExpr);
kw("do", {isLoop: true});
kw("do", {isLoop: true, beforeExpr: true});
kw("else", beforeExpr);
kw("finally");
kw("for", {isLoop: true});

View File

@ -49,7 +49,7 @@ nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
// offset starts at 0x10000, and each pair of numbers represents an
// offset to the next range, and then a size of the range. They were
// generated by tools/generate-identifier-regex.js
var astralIdentifierStartCodes = [
let astralIdentifierStartCodes = [
0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 17, 26, 6, 37, 11, 29, 3, 35, 5,
7, 2, 4, 43, 157, 99, 39, 9, 51, 157, 310, 10, 21, 11, 7, 153, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30,
98, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 26, 45, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14,
@ -62,7 +62,7 @@ var astralIdentifierStartCodes = [
0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2,
4, 2, 16, 4421, 42710, 42, 4148, 12, 221, 16355, 541
];
var astralIdentifierCodes = [
let astralIdentifierCodes = [
509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 1306, 2, 54, 14, 32, 9, 16, 3, 46, 10,
54, 9, 7, 2, 37, 13, 2, 9, 52, 0, 13, 2, 49, 13, 16, 9, 83, 11, 168, 11, 6, 9, 8, 2, 57, 0, 2, 6, 3, 1, 3, 2, 10,
0, 11, 1, 3, 6, 4, 4, 316, 19, 13, 9, 214, 6, 3, 8, 112, 16, 16, 9, 82, 12, 9, 9, 535, 9, 20855, 9, 135, 4, 60, 6,

View File

@ -74,7 +74,7 @@
},
"body": [
{
"type": "MethodDefinition",
"type": "ClassMethod",
"start": 103,
"end": 119,
"loc": {
@ -107,41 +107,26 @@
},
"static": false,
"kind": "method",
"value": {
"type": "FunctionExpression",
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Some files were not shown because too many files have changed in this diff Show More