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762 lines (646 loc) · 16.5 KB
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import { util as prettierUtil } from "prettier";
import { locStart } from "./loc.mjs";
const { hasNewline, skipEverythingButNewLine, skipNewline } = prettierUtil;
function printNumber(rawNumber) {
return (
rawNumber
.toLowerCase()
// Remove unnecessary plus and zeroes from scientific notation.
.replace(/^([+-]?[\d.]+e)(?:\+|(-))?0*(\d)/, "$1$2$3")
// Remove unnecessary scientific notation (1e0).
.replace(/^([+-]?[\d.]+)e[+-]?0+$/, "$1")
// Make sure numbers always start with a digit.
.replace(/^([+-])?\./, "$10.")
// Remove extraneous trailing decimal zeroes.
.replace(/(\.\d+?)0+(?=e|$)/, "$1")
// Remove unnecessary .e notation
.replace(/\.(?=e)/, "")
);
}
// http://php.net/manual/en/language.operators.precedence.php
const PRECEDENCE = new Map(
[
["or"],
["xor"],
["and"],
[
"=",
"+=",
"-=",
"*=",
"**=",
"/=",
".=",
"%=",
"&=",
"|=",
"^=",
"<<=",
">>=",
],
["|>"],
["??"],
["||"],
["&&"],
["|"],
["^"],
["&"],
["==", "===", "!=", "!==", "<>", "<=>"],
["<", ">", "<=", ">="],
[">>", "<<"],
["+", "-", "."],
["*", "/", "%"],
["!"],
["instanceof"],
["++", "--", "~"],
["**"],
].flatMap((operators, index) =>
operators.map((operator) => [operator, index])
)
);
function getPrecedence(operator) {
return PRECEDENCE.get(operator);
}
const equalityOperators = ["==", "!=", "===", "!==", "<>", "<=>"];
const multiplicativeOperators = ["*", "/", "%"];
const bitshiftOperators = [">>", "<<"];
function isBitwiseOperator(operator) {
return (
bitshiftOperators.includes(operator) ||
operator === "|" ||
operator === "^" ||
operator === "&"
);
}
function shouldFlatten(parentOp, nodeOp) {
if (getPrecedence(nodeOp) !== getPrecedence(parentOp)) {
return false;
}
// ** is right-associative
// x ** y ** z --> x ** (y ** z)
if (parentOp === "**") {
return false;
}
// x == y == z --> (x == y) == z
if (
equalityOperators.includes(parentOp) &&
equalityOperators.includes(nodeOp)
) {
return false;
}
// x * y % z --> (x * y) % z
if (
(nodeOp === "%" && multiplicativeOperators.includes(parentOp)) ||
(parentOp === "%" && multiplicativeOperators.includes(nodeOp))
) {
return false;
}
// x * y / z --> (x * y) / z
// x / y * z --> (x / y) * z
if (
nodeOp !== parentOp &&
multiplicativeOperators.includes(nodeOp) &&
multiplicativeOperators.includes(parentOp)
) {
return false;
}
// x << y << z --> (x << y) << z
if (
bitshiftOperators.includes(parentOp) &&
bitshiftOperators.includes(nodeOp)
) {
return false;
}
return true;
}
function nodeHasStatement(node) {
return [
"block",
"program",
"namespace",
"class",
"enum",
"interface",
"trait",
"traituse",
"declare",
].includes(node.kind);
}
function getBodyFirstChild({ body }) {
if (!body) {
return null;
}
if (body.kind === "block") {
body = body.children;
}
return body[0];
}
function getNodeListProperty(node) {
const body = node.children || node.body || node.adaptations;
return Array.isArray(body) ? body : null;
}
function getLast(arr) {
if (arr.length > 0) {
return arr[arr.length - 1];
}
return null;
}
function getPenultimate(arr) {
if (arr.length > 1) {
return arr[arr.length - 2];
}
return null;
}
function isFirstChildrenInlineNode(path) {
const { node } = path;
if (node.kind === "program") {
const children = getNodeListProperty(node);
if (!children || children.length === 0) {
return false;
}
return children[0].kind === "inline";
}
if (node.kind === "switch") {
if (!node.body) {
return false;
}
const children = getNodeListProperty(node.body);
if (children.length === 0) {
return false;
}
const [firstCase] = children;
if (!firstCase.body) {
return false;
}
const firstCaseChildren = getNodeListProperty(firstCase.body);
if (firstCaseChildren.length === 0) {
return false;
}
return firstCaseChildren[0].kind === "inline";
}
const firstChild = getBodyFirstChild(node);
if (!firstChild) {
return false;
}
return firstChild.kind === "inline";
}
function isDocNode(node) {
return (
node.kind === "nowdoc" ||
(node.kind === "encapsed" && node.type === "heredoc")
);
}
/**
* Heredoc/Nowdoc nodes need a trailing linebreak if they
* appear as function arguments or array elements
*/
function docShouldHaveTrailingNewline(path, recurse = 0) {
const node = path.getNode(recurse);
const parent = path.getNode(recurse + 1);
const parentParent = path.getNode(recurse + 2);
if (!parent) {
return false;
}
if (
(parentParent &&
["call", "new", "echo"].includes(parentParent.kind) &&
!["call", "array"].includes(parent.kind)) ||
parent.kind === "parameter"
) {
const lastIndex = parentParent.arguments.length - 1;
const index = parentParent.arguments.indexOf(parent);
return index !== lastIndex;
}
if (parentParent && parentParent.kind === "for") {
const initIndex = parentParent.init.indexOf(parent);
if (initIndex !== -1) {
return initIndex !== parentParent.init.length - 1;
}
const testIndex = parentParent.test.indexOf(parent);
if (testIndex !== -1) {
return testIndex !== parentParent.test.length - 1;
}
const incrementIndex = parentParent.increment.indexOf(parent);
if (incrementIndex !== -1) {
return incrementIndex !== parentParent.increment.length - 1;
}
}
if (parent.kind === "bin") {
return (
parent.left === node || docShouldHaveTrailingNewline(path, recurse + 1)
);
}
if (parent.kind === "case" && parent.test === node) {
return true;
}
if (parent.kind === "staticvariable") {
const lastIndex = parentParent.variables.length - 1;
const index = parentParent.variables.indexOf(parent);
return index !== lastIndex;
}
if (parent.kind === "entry") {
if (parent.key === node) {
return true;
}
const lastIndex = parentParent.items.length - 1;
const index = parentParent.items.indexOf(parent);
return index !== lastIndex;
}
if (["call", "new"].includes(parent.kind)) {
const lastIndex = parent.arguments.length - 1;
const index = parent.arguments.indexOf(node);
return index !== lastIndex;
}
if (parent.kind === "echo") {
const lastIndex = parent.expressions.length - 1;
const index = parent.expressions.indexOf(node);
return index !== lastIndex;
}
if (parent.kind === "array") {
const lastIndex = parent.items.length - 1;
const index = parent.items.indexOf(node);
return index !== lastIndex;
}
if (parent.kind === "retif") {
return docShouldHaveTrailingNewline(path, recurse + 1);
}
return false;
}
function lineShouldEndWithSemicolon(path) {
const { node, parent: parentNode } = path;
if (!parentNode) {
return false;
}
// for single line control structures written in a shortform (ie without a block),
// we need to make sure the single body node gets a semicolon
if (
["for", "foreach", "while", "do", "if", "switch"].includes(
parentNode.kind
) &&
node.kind !== "block" &&
node.kind !== "if" &&
(parentNode.body === node || parentNode.alternate === node)
) {
return true;
}
if (!nodeHasStatement(parentNode)) {
return false;
}
if (node.kind === "echo" && node.shortForm) {
return false;
}
if (node.kind === "traituse") {
return !node.adaptations;
}
if (node.kind === "method" && node.isAbstract) {
return true;
}
// a hooked property ends with its closing brace, not a semicolon
if (
node.kind === "propertystatement" &&
node.properties.some((property) => property.hooks?.length > 0)
) {
return false;
}
if (node.kind === "method") {
const { parent } = path;
if (parent && parent.kind === "interface") {
return true;
}
}
if (node.kind === "expressionstatement") {
const expr = node.expression;
const isPipeChain =
(expr.kind === "bin" && expr.type === "|>") ||
(expr.kind === "assign" &&
expr.right.kind === "bin" &&
expr.right.type === "|>");
if (isPipeChain) {
return false;
}
}
return [
"expressionstatement",
"do",
"usegroup",
"classconstant",
"propertystatement",
"traitprecedence",
"traitalias",
"goto",
"constantstatement",
"enumcase",
"global",
"static",
"echo",
"unset",
"return",
"break",
"continue",
"throw",
].includes(node.kind);
}
function fileShouldEndWithHardline(path) {
const { node } = path;
const isProgramNode = node.kind === "program";
const lastNode = node.children && getLast(node.children);
if (!isProgramNode) {
return false;
}
if (lastNode && ["halt", "inline"].includes(lastNode.kind)) {
return false;
}
if (
lastNode &&
(lastNode.kind === "declare" || lastNode.kind === "namespace")
) {
const lastNestedNode =
lastNode.children.length > 0 && getLast(lastNode.children);
if (lastNestedNode && ["halt", "inline"].includes(lastNestedNode.kind)) {
return false;
}
}
return true;
}
function maybeStripLeadingSlashFromUse(name) {
const nameWithoutLeadingSlash = name.replace(/^\\/, "");
if (nameWithoutLeadingSlash.indexOf("\\") !== -1) {
return nameWithoutLeadingSlash;
}
return name;
}
function hasDanglingComments(node) {
return (
node.comments &&
node.comments.some((comment) => !comment.leading && !comment.trailing)
);
}
function isLookupNode(node) {
return (
node.kind === "propertylookup" ||
node.kind === "nullsafepropertylookup" ||
node.kind === "staticlookup" ||
node.kind === "offsetlookup"
);
}
function shouldPrintHardLineAfterStartInControlStructure(path) {
const { node } = path;
if (["try", "catch"].includes(node.kind)) {
return false;
}
return isFirstChildrenInlineNode(path);
}
function shouldPrintHardLineBeforeEndInControlStructure(path) {
const { node } = path;
if (["try", "catch"].includes(node.kind)) {
return true;
}
if (node.kind === "switch") {
const children = getNodeListProperty(node.body);
if (children.length === 0) {
return true;
}
const lastCase = getLast(children);
if (!lastCase.body) {
return true;
}
const childrenInCase = getNodeListProperty(lastCase.body);
if (childrenInCase.length === 0) {
return true;
}
return childrenInCase[0].kind !== "inline";
}
return !isFirstChildrenInlineNode(path);
}
function getAlignment(text) {
const lines = text.split("\n");
const lastLine = lines.pop();
return lastLine.length - lastLine.trimLeft().length + 1;
}
function isProgramLikeNode(node) {
return ["program", "declare", "namespace"].includes(node.kind);
}
function isReferenceLikeNode(node) {
return [
"name",
"parentreference",
"selfreference",
"staticreference",
].includes(node.kind);
}
// Return `logical` value for `bin` node containing `||` or `&&` type otherwise return kind of node.
// Require for grouping logical and binary nodes in right way.
function getNodeKindIncludingLogical(node) {
if (node.kind === "bin" && ["||", "&&"].includes(node.type)) {
return "logical";
}
return node.kind;
}
/**
* Check if string can safely be converted from double to single quotes and vice-versa, i.e.
*
* - no embedded variables ("foo $bar")
* - no linebreaks
* - no special characters like \n, \t, ...
* - no octal/hex/unicode characters
*
* See https://php.net/manual/en/language.types.string.php#language.types.string.syntax.double
*/
function useDoubleQuote(node, options) {
if (node.isDoubleQuote === options.singleQuote) {
// We have a double quote and the user passed singleQuote:true, or the other way around.
const rawValue = node.raw.slice(node.raw[0] === "b" ? 2 : 1, -1);
const isComplex = rawValue.match(
/\\([$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3}|u{([0-9a-fA-F]+)})|\r?\n|'|"|\$/
);
return node.isDoubleQuote ? isComplex : !isComplex;
}
return node.isDoubleQuote;
}
function hasEmptyBody(path, name = "body") {
const { node } = path;
return (
node[name] &&
node[name].children &&
node[name].children.length === 0 &&
(!node[name].comments || node[name].comments.length === 0)
);
}
function isNextLineEmptyAfterNamespace(text, node) {
let idx = locStart(node);
idx = skipEverythingButNewLine(text, idx);
idx = skipNewline(text, idx);
return hasNewline(text, idx);
}
function shouldPrintHardlineBeforeTrailingComma(lastElem) {
if (
lastElem.kind === "nowdoc" ||
(lastElem.kind === "encapsed" && lastElem.type === "heredoc")
) {
return true;
}
if (
lastElem.kind === "entry" &&
(lastElem.value.kind === "nowdoc" ||
(lastElem.value.kind === "encapsed" && lastElem.value.type === "heredoc"))
) {
return true;
}
return false;
}
function getAncestorCounter(path, typeOrTypes) {
const types = [].concat(typeOrTypes);
let counter = -1;
let ancestorNode;
while ((ancestorNode = path.getParentNode(++counter))) {
if (types.indexOf(ancestorNode.kind) !== -1) {
return counter;
}
}
return -1;
}
function getAncestorNode(path, typeOrTypes) {
const counter = getAncestorCounter(path, typeOrTypes);
return counter === -1 ? null : path.getParentNode(counter);
}
const magicMethods = [
"__construct",
"__destruct",
"__call",
"__callStatic",
"__get",
"__set",
"__isset",
"__unset",
"__sleep",
"__wakeup",
"__toString",
"__invoke",
"__set_state",
"__clone",
"__debugInfo",
];
const magicMethodsMap = new Map(
magicMethods.map((name) => [name.toLowerCase(), name])
);
function normalizeMagicMethodName(name) {
const loweredName = name.toLowerCase();
if (magicMethodsMap.has(loweredName)) {
return magicMethodsMap.get(loweredName);
}
return name;
}
/**
* @param {string[]} kindsArray
* @returns {(node: Node | Comment) => Boolean}
*/
function createTypeCheckFunction(kindsArray) {
const kinds = new Set(kindsArray);
return (node) => kinds.has(node?.kind);
}
const isSingleWordType = createTypeCheckFunction([
"variadicplaceholder",
"namedargument",
"nullkeyword",
"identifier",
"parameter",
"variable",
"variadic",
"boolean",
"literal",
"number",
"string",
"clone",
"cast",
]);
const isArrayExpression = createTypeCheckFunction(["array"]);
const isCallLikeExpression = createTypeCheckFunction([
"nullsafepropertylookup",
"propertylookup",
"staticlookup",
"offsetlookup",
"call",
"new",
]);
const isArrowFuncExpression = createTypeCheckFunction(["arrowfunc"]);
function getChainParts(node, prev = []) {
const parts = prev;
if (isCallLikeExpression(node)) {
parts.push(node);
}
if (!node.what) {
return parts;
}
return getChainParts(node.what, parts);
}
function isSimpleCallArgument(node, depth = 2) {
if (depth <= 0) {
return false;
}
const isChildSimple = (child) => isSimpleCallArgument(child, depth - 1);
if (isSingleWordType(node)) {
return true;
}
if (isArrayExpression(node)) {
return node.items.every((x) => x === null || isChildSimple(x));
}
if (isCallLikeExpression(node)) {
const parts = getChainParts(node);
parts.shift();
return (
parts.length <= depth &&
parts.every((node) =>
isLookupNode(node)
? isChildSimple(node.offset)
: node.arguments.every(isChildSimple)
)
);
}
if (isArrowFuncExpression(node)) {
return (
node.arguments.length <= depth && node.arguments.every(isChildSimple)
);
}
return false;
}
function memoize(fn) {
const cache = new Map();
return (key) => {
if (!cache.has(key)) {
cache.set(key, fn(key));
}
return cache.get(key);
};
}
export {
printNumber,
getPrecedence,
isBitwiseOperator,
shouldFlatten,
nodeHasStatement,
getLast,
getPenultimate,
getBodyFirstChild,
lineShouldEndWithSemicolon,
fileShouldEndWithHardline,
maybeStripLeadingSlashFromUse,
hasDanglingComments,
docShouldHaveTrailingNewline,
isLookupNode,
isFirstChildrenInlineNode,
shouldPrintHardLineAfterStartInControlStructure,
shouldPrintHardLineBeforeEndInControlStructure,
getAlignment,
isProgramLikeNode,
isReferenceLikeNode,
getNodeKindIncludingLogical,
useDoubleQuote,
hasEmptyBody,
isNextLineEmptyAfterNamespace,
shouldPrintHardlineBeforeTrailingComma,
isDocNode,
getAncestorNode,
normalizeMagicMethodName,
isSimpleCallArgument,
memoize,
};