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util: cleanup util #25255

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util: cleanup util #25255

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17aa99f
util: switch recurseTimes counter
BridgeAR Dec 28, 2018
e73a36c
util: code cleanup
BridgeAR Dec 28, 2018
65cad90
util: simpler module namespace code
BridgeAR Dec 28, 2018
057882e
util: remove outdated comment
BridgeAR Dec 28, 2018
669c2f4
util: remove eslint comments and rename variables
BridgeAR Dec 28, 2018
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123 changes: 54 additions & 69 deletions lib/internal/util/inspect.js
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Original file line number Diff line number Diff line change
Expand Up @@ -191,7 +191,7 @@ function inspect(value, opts) {
}
if (ctx.colors) ctx.stylize = stylizeWithColor;
if (ctx.maxArrayLength === null) ctx.maxArrayLength = Infinity;
return formatValue(ctx, value, ctx.depth);
return formatValue(ctx, value, 0);
}
inspect.custom = customInspectSymbol;

Expand All @@ -209,34 +209,34 @@ Object.defineProperty(inspect, 'defaultOptions', {

// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = Object.assign(Object.create(null), {
'bold': [1, 22],
'italic': [3, 23],
'underline': [4, 24],
'inverse': [7, 27],
'white': [37, 39],
'grey': [90, 39],
'black': [30, 39],
'blue': [34, 39],
'cyan': [36, 39],
'green': [32, 39],
'magenta': [35, 39],
'red': [31, 39],
'yellow': [33, 39]
bold: [1, 22],
italic: [3, 23],
underline: [4, 24],
inverse: [7, 27],
white: [37, 39],
grey: [90, 39],
black: [30, 39],
blue: [34, 39],
cyan: [36, 39],
green: [32, 39],
magenta: [35, 39],
red: [31, 39],
yellow: [33, 39]
});

// Don't use 'blue' not visible on cmd.exe
inspect.styles = Object.assign(Object.create(null), {
'special': 'cyan',
'number': 'yellow',
'bigint': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'symbol': 'green',
'date': 'magenta',
special: 'cyan',
number: 'yellow',
bigint: 'yellow',
boolean: 'yellow',
undefined: 'grey',
null: 'bold',
string: 'green',
symbol: 'green',
date: 'magenta',
// "name": intentionally not styling
'regexp': 'red'
regexp: 'red'
});

function addQuotes(str, quotes) {
Expand Down Expand Up @@ -356,14 +356,10 @@ function getPrefix(constructor, tag, fallback) {
return `[${fallback}: null prototype] `;
}

if (constructor !== '') {
if (tag !== '' && constructor !== tag) {
return `${constructor} [${tag}] `;
}
return `${constructor} `;
if (tag !== '' && constructor !== tag) {
return `${constructor} [${tag}] `;
}

return '';
return `${constructor} `;
}

const getBoxedValue = formatPrimitive.bind(null, stylizeNoColor);
Expand Down Expand Up @@ -405,11 +401,10 @@ function getCtxStyle(constructor, tag) {
}

function formatProxy(ctx, proxy, recurseTimes) {
if (recurseTimes != null) {
if (recurseTimes < 0)
return ctx.stylize('Proxy [Array]', 'special');
recurseTimes -= 1;
if (recurseTimes > ctx.depth && ctx.depth !== null) {
return ctx.stylize('Proxy [Array]', 'special');
}
recurseTimes += 1;
ctx.indentationLvl += 2;
const res = [
formatValue(ctx, proxy[0], recurseTimes),
Expand Down Expand Up @@ -524,7 +519,10 @@ function formatValue(ctx, value, recurseTimes) {
maybeCustom !== inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
const ret = maybeCustom.call(value, recurseTimes, ctx);
// This makes sure the recurseTimes are reported as before while using
// a counter internally.
const depth = ctx.depth === null ? null : ctx.depth - recurseTimes;
const ret = maybeCustom.call(value, depth, ctx);

// If the custom inspection method returned `this`, don't go into
// infinite recursion.
Expand Down Expand Up @@ -557,7 +555,6 @@ function formatRaw(ctx, value, recurseTimes) {
let braces;
let noIterator = true;
let i = 0;
let skip = false;
const filter = ctx.showHidden ? ALL_PROPERTIES : ONLY_ENUMERABLE;

let extrasType = kObjectType;
Expand Down Expand Up @@ -615,16 +612,12 @@ function formatRaw(ctx, value, recurseTimes) {
braces = ['{', '}'];
if (constructor === 'Object') {
if (isArgumentsObject(value)) {
if (keys.length === 0)
return '[Arguments] {}';
braces[0] = '[Arguments] {';
} else if (tag !== '') {
braces[0] = `${getPrefix(constructor, tag, 'Object')}{`;
if (keys.length === 0) {
return `${braces[0]}}`;
}
} else if (keys.length === 0) {
return '{}';
}
if (keys.length === 0) {
return `${braces[0]}}`;
}
} else if (typeof value === 'function') {
const type = constructor || tag || 'Function';
Expand All @@ -638,7 +631,7 @@ function formatRaw(ctx, value, recurseTimes) {
const prefix = getPrefix(constructor, tag, 'RegExp');
if (prefix !== 'RegExp ')
base = `${prefix}${base}`;
if (keys.length === 0 || recurseTimes < 0)
if (keys.length === 0 || recurseTimes > ctx.depth && ctx.depth !== null)
return ctx.stylize(base, 'regexp');
} else if (isDate(value)) {
// Make dates with properties first say the date
Expand Down Expand Up @@ -696,7 +689,6 @@ function formatRaw(ctx, value, recurseTimes) {
} else if (isModuleNamespaceObject(value)) {
braces[0] = `[${tag}] {`;
formatter = formatNamespaceObject;
skip = true;
} else if (isBoxedPrimitive(value)) {
let type;
if (isNumberObject(value)) {
Expand Down Expand Up @@ -746,22 +738,19 @@ function formatRaw(ctx, value, recurseTimes) {
}
}

if (recurseTimes != null) {
if (recurseTimes < 0)
return ctx.stylize(`[${getCtxStyle(constructor, tag)}]`, 'special');
recurseTimes -= 1;
if (recurseTimes > ctx.depth && ctx.depth !== null) {
return ctx.stylize(`[${getCtxStyle(constructor, tag)}]`, 'special');
}
recurseTimes += 1;

ctx.seen.push(value);
let output;
const indentationLvl = ctx.indentationLvl;
try {
output = formatter(ctx, value, recurseTimes, keys);
if (skip === false) {
for (i = 0; i < keys.length; i++) {
output.push(
formatProperty(ctx, value, recurseTimes, keys[i], extrasType));
}
for (i = 0; i < keys.length; i++) {
output.push(
formatProperty(ctx, value, recurseTimes, keys[i], extrasType));
}
} catch (err) {
return handleMaxCallStackSize(ctx, err, constructor, tag, indentationLvl);
Expand Down Expand Up @@ -810,9 +799,7 @@ function handleMaxCallStackSize(ctx, err, constructor, tag, indentationLvl) {

function formatNumber(fn, value) {
// Format -0 as '-0'. Checking `value === -0` won't distinguish 0 from -0.
if (Object.is(value, -0))
return fn('-0', 'number');
return fn(`${value}`, 'number');
return fn(Object.is(value, -0) ? '-0' : `${value}`, 'number');
}

function formatBigInt(fn, value) {
Expand All @@ -824,12 +811,11 @@ function formatPrimitive(fn, value, ctx) {
if (ctx.compact === false &&
ctx.indentationLvl + value.length > ctx.breakLength &&
value.length > kMinLineLength) {
// eslint-disable-next-line max-len
const minLineLength = Math.max(ctx.breakLength - ctx.indentationLvl, kMinLineLength);
// eslint-disable-next-line max-len
const averageLineLength = Math.ceil(value.length / Math.ceil(value.length / minLineLength));
const rawMaxLineLength = ctx.breakLength - ctx.indentationLvl;
const maxLineLength = Math.max(rawMaxLineLength, kMinLineLength);
const lines = Math.ceil(value.length / maxLineLength);
const averageLineLength = Math.ceil(value.length / lines);
const divisor = Math.max(averageLineLength, kMinLineLength);
let res = '';
if (readableRegExps[divisor] === undefined) {
// Build a new RegExp that naturally breaks text into multiple lines.
//
Expand All @@ -845,7 +831,7 @@ function formatPrimitive(fn, value, ctx) {
const matches = value.match(readableRegExps[divisor]);
if (matches.length > 1) {
const indent = ' '.repeat(ctx.indentationLvl);
res += `${fn(strEscape(matches[0]), 'string')} +\n`;
let res = `${fn(strEscape(matches[0]), 'string')} +\n`;
for (var i = 1; i < matches.length - 1; i++) {
res += `${indent} ${fn(strEscape(matches[i]), 'string')} +\n`;
}
Expand Down Expand Up @@ -873,9 +859,8 @@ function formatError(value) {
}

function formatNamespaceObject(ctx, value, recurseTimes, keys) {
const len = keys.length;
const output = new Array(len);
for (var i = 0; i < len; i++) {
const output = new Array(keys.length);
for (var i = 0; i < keys.length; i++) {
try {
output[i] = formatProperty(ctx, value, recurseTimes, keys[i],
kObjectType);
Expand All @@ -895,6 +880,8 @@ function formatNamespaceObject(ctx, value, recurseTimes, keys) {
ctx.stylize('<uninitialized>', 'special');
}
}
// Reset the keys to an empty array. This prevents duplicated inspection.
keys.length = 0;
return output;
}

Expand Down Expand Up @@ -1104,8 +1091,6 @@ function formatPromise(ctx, value, recurseTimes) {
if (state === kPending) {
output = [ctx.stylize('<pending>', 'special')];
} else {
// Using `formatValue` is correct here without the need to fix the
// indentation level.
ctx.indentationLvl += 2;
const str = formatValue(ctx, result, recurseTimes);
ctx.indentationLvl -= 2;
Expand Down
1 change: 0 additions & 1 deletion test/parallel/test-util-inspect.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1791,7 +1791,6 @@ assert.strictEqual(
util.inspect(new StorageObject()),
'<[Object: null prototype] {}> {}'
);

}

// Check that the fallback always works.
Expand Down