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package.lib.printer.js Maven / Gradle / Ivy
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _buffer = require("./buffer.js");
var n = require("./node/index.js");
var _t = require("@babel/types");
var generatorFunctions = require("./generators/index.js");
const {
isFunction,
isStatement,
isClassBody,
isTSInterfaceBody,
isTSEnumDeclaration
} = _t;
const SCIENTIFIC_NOTATION = /e/i;
const ZERO_DECIMAL_INTEGER = /\.0+$/;
const NON_DECIMAL_LITERAL = /^0[box]/;
const PURE_ANNOTATION_RE = /^\s*[@#]__PURE__\s*$/;
const HAS_NEWLINE = /[\n\r\u2028\u2029]/;
const HAS_BlOCK_COMMENT_END = /\*\//;
const {
needsParens
} = n;
class Printer {
constructor(format, map) {
this.inForStatementInitCounter = 0;
this._printStack = [];
this._indent = 0;
this._indentChar = 0;
this._indentRepeat = 0;
this._insideAux = false;
this._parenPushNewlineState = null;
this._noLineTerminator = false;
this._printAuxAfterOnNextUserNode = false;
this._printedComments = new Set();
this._endsWithInteger = false;
this._endsWithWord = false;
this._lastCommentLine = 0;
this._endsWithInnerRaw = false;
this._indentInnerComments = true;
this.format = format;
this._buf = new _buffer.default(map);
this._indentChar = format.indent.style.charCodeAt(0);
this._indentRepeat = format.indent.style.length;
this._inputMap = map == null ? void 0 : map._inputMap;
}
generate(ast) {
this.print(ast);
this._maybeAddAuxComment();
return this._buf.get();
}
indent() {
if (this.format.compact || this.format.concise) return;
this._indent++;
}
dedent() {
if (this.format.compact || this.format.concise) return;
this._indent--;
}
semicolon(force = false) {
this._maybeAddAuxComment();
if (force) {
this._appendChar(59);
} else {
this._queue(59);
}
this._noLineTerminator = false;
}
rightBrace(node) {
if (this.format.minified) {
this._buf.removeLastSemicolon();
}
this.sourceWithOffset("end", node.loc, -1);
this.tokenChar(125);
}
rightParens(node) {
this.sourceWithOffset("end", node.loc, -1);
this.tokenChar(41);
}
space(force = false) {
if (this.format.compact) return;
if (force) {
this._space();
} else if (this._buf.hasContent()) {
const lastCp = this.getLastChar();
if (lastCp !== 32 && lastCp !== 10) {
this._space();
}
}
}
word(str, noLineTerminatorAfter = false) {
this._maybePrintInnerComments();
if (this._endsWithWord || str.charCodeAt(0) === 47 && this.endsWith(47)) {
this._space();
}
this._maybeAddAuxComment();
this._append(str, false);
this._endsWithWord = true;
this._noLineTerminator = noLineTerminatorAfter;
}
number(str) {
this.word(str);
this._endsWithInteger = Number.isInteger(+str) && !NON_DECIMAL_LITERAL.test(str) && !SCIENTIFIC_NOTATION.test(str) && !ZERO_DECIMAL_INTEGER.test(str) && str.charCodeAt(str.length - 1) !== 46;
}
token(str, maybeNewline = false) {
this._maybePrintInnerComments();
const lastChar = this.getLastChar();
const strFirst = str.charCodeAt(0);
if (lastChar === 33 && (str === "--" || strFirst === 61) || strFirst === 43 && lastChar === 43 || strFirst === 45 && lastChar === 45 || strFirst === 46 && this._endsWithInteger) {
this._space();
}
this._maybeAddAuxComment();
this._append(str, maybeNewline);
this._noLineTerminator = false;
}
tokenChar(char) {
this._maybePrintInnerComments();
const lastChar = this.getLastChar();
if (char === 43 && lastChar === 43 || char === 45 && lastChar === 45 || char === 46 && this._endsWithInteger) {
this._space();
}
this._maybeAddAuxComment();
this._appendChar(char);
this._noLineTerminator = false;
}
newline(i = 1, force) {
if (i <= 0) return;
if (!force) {
if (this.format.retainLines || this.format.compact) return;
if (this.format.concise) {
this.space();
return;
}
}
if (i > 2) i = 2;
i -= this._buf.getNewlineCount();
for (let j = 0; j < i; j++) {
this._newline();
}
return;
}
endsWith(char) {
return this.getLastChar() === char;
}
getLastChar() {
return this._buf.getLastChar();
}
endsWithCharAndNewline() {
return this._buf.endsWithCharAndNewline();
}
removeTrailingNewline() {
this._buf.removeTrailingNewline();
}
exactSource(loc, cb) {
if (!loc) {
cb();
return;
}
this._catchUp("start", loc);
this._buf.exactSource(loc, cb);
}
source(prop, loc) {
if (!loc) return;
this._catchUp(prop, loc);
this._buf.source(prop, loc);
}
sourceWithOffset(prop, loc, columnOffset) {
if (!loc) return;
this._catchUp(prop, loc);
this._buf.sourceWithOffset(prop, loc, columnOffset);
}
withSource(prop, loc, cb) {
if (!loc) {
cb();
return;
}
this._catchUp(prop, loc);
this._buf.withSource(prop, loc, cb);
}
sourceIdentifierName(identifierName, pos) {
if (!this._buf._canMarkIdName) return;
const sourcePosition = this._buf._sourcePosition;
sourcePosition.identifierNamePos = pos;
sourcePosition.identifierName = identifierName;
}
_space() {
this._queue(32);
}
_newline() {
this._queue(10);
}
_append(str, maybeNewline) {
this._maybeAddParen(str);
this._maybeIndent(str.charCodeAt(0));
this._buf.append(str, maybeNewline);
this._endsWithWord = false;
this._endsWithInteger = false;
}
_appendChar(char) {
this._maybeAddParenChar(char);
this._maybeIndent(char);
this._buf.appendChar(char);
this._endsWithWord = false;
this._endsWithInteger = false;
}
_queue(char) {
this._maybeAddParenChar(char);
this._maybeIndent(char);
this._buf.queue(char);
this._endsWithWord = false;
this._endsWithInteger = false;
}
_maybeIndent(firstChar) {
if (this._indent && firstChar !== 10 && this.endsWith(10)) {
this._buf.queueIndentation(this._indentChar, this._getIndent());
}
}
_shouldIndent(firstChar) {
if (this._indent && firstChar !== 10 && this.endsWith(10)) {
return true;
}
}
_maybeAddParenChar(char) {
const parenPushNewlineState = this._parenPushNewlineState;
if (!parenPushNewlineState) return;
if (char === 32) {
return;
}
if (char !== 10) {
this._parenPushNewlineState = null;
return;
}
this.tokenChar(40);
this.indent();
parenPushNewlineState.printed = true;
}
_maybeAddParen(str) {
const parenPushNewlineState = this._parenPushNewlineState;
if (!parenPushNewlineState) return;
const len = str.length;
let i;
for (i = 0; i < len && str.charCodeAt(i) === 32; i++) continue;
if (i === len) {
return;
}
const cha = str.charCodeAt(i);
if (cha !== 10) {
if (cha !== 47 || i + 1 === len) {
this._parenPushNewlineState = null;
return;
}
const chaPost = str.charCodeAt(i + 1);
if (chaPost === 42) {
if (PURE_ANNOTATION_RE.test(str.slice(i + 2, len - 2))) {
return;
}
} else if (chaPost !== 47) {
this._parenPushNewlineState = null;
return;
}
}
this.tokenChar(40);
this.indent();
parenPushNewlineState.printed = true;
}
catchUp(line) {
if (!this.format.retainLines) return;
const count = line - this._buf.getCurrentLine();
for (let i = 0; i < count; i++) {
this._newline();
}
}
_catchUp(prop, loc) {
var _loc$prop;
if (!this.format.retainLines) return;
const line = loc == null || (_loc$prop = loc[prop]) == null ? void 0 : _loc$prop.line;
if (line != null) {
const count = line - this._buf.getCurrentLine();
for (let i = 0; i < count; i++) {
this._newline();
}
}
}
_getIndent() {
return this._indentRepeat * this._indent;
}
printTerminatorless(node, parent, isLabel) {
if (isLabel) {
this._noLineTerminator = true;
this.print(node, parent);
} else {
const terminatorState = {
printed: false
};
this._parenPushNewlineState = terminatorState;
this.print(node, parent);
if (terminatorState.printed) {
this.dedent();
this.newline();
this.tokenChar(41);
}
}
}
print(node, parent, noLineTerminatorAfter, trailingCommentsLineOffset, forceParens) {
var _node$extra;
if (!node) return;
this._endsWithInnerRaw = false;
const nodeType = node.type;
const format = this.format;
const oldConcise = format.concise;
if (node._compact) {
format.concise = true;
}
const printMethod = this[nodeType];
if (printMethod === undefined) {
throw new ReferenceError(`unknown node of type ${JSON.stringify(nodeType)} with constructor ${JSON.stringify(node.constructor.name)}`);
}
this._printStack.push(node);
const oldInAux = this._insideAux;
this._insideAux = node.loc == undefined;
this._maybeAddAuxComment(this._insideAux && !oldInAux);
const shouldPrintParens = forceParens || format.retainFunctionParens && nodeType === "FunctionExpression" && ((_node$extra = node.extra) == null ? void 0 : _node$extra.parenthesized) || needsParens(node, parent, this._printStack);
if (shouldPrintParens) {
this.tokenChar(40);
this._endsWithInnerRaw = false;
}
this._lastCommentLine = 0;
this._printLeadingComments(node, parent);
const loc = nodeType === "Program" || nodeType === "File" ? null : node.loc;
this.exactSource(loc, printMethod.bind(this, node, parent));
if (shouldPrintParens) {
this._printTrailingComments(node, parent);
this.tokenChar(41);
this._noLineTerminator = noLineTerminatorAfter;
} else if (noLineTerminatorAfter && !this._noLineTerminator) {
this._noLineTerminator = true;
this._printTrailingComments(node, parent);
} else {
this._printTrailingComments(node, parent, trailingCommentsLineOffset);
}
this._printStack.pop();
format.concise = oldConcise;
this._insideAux = oldInAux;
this._endsWithInnerRaw = false;
}
_maybeAddAuxComment(enteredPositionlessNode) {
if (enteredPositionlessNode) this._printAuxBeforeComment();
if (!this._insideAux) this._printAuxAfterComment();
}
_printAuxBeforeComment() {
if (this._printAuxAfterOnNextUserNode) return;
this._printAuxAfterOnNextUserNode = true;
const comment = this.format.auxiliaryCommentBefore;
if (comment) {
this._printComment({
type: "CommentBlock",
value: comment
}, 0);
}
}
_printAuxAfterComment() {
if (!this._printAuxAfterOnNextUserNode) return;
this._printAuxAfterOnNextUserNode = false;
const comment = this.format.auxiliaryCommentAfter;
if (comment) {
this._printComment({
type: "CommentBlock",
value: comment
}, 0);
}
}
getPossibleRaw(node) {
const extra = node.extra;
if ((extra == null ? void 0 : extra.raw) != null && extra.rawValue != null && node.value === extra.rawValue) {
return extra.raw;
}
}
printJoin(nodes, parent, opts = {}) {
if (!(nodes != null && nodes.length)) return;
let {
indent
} = opts;
if (indent == null && this.format.retainLines) {
var _nodes$0$loc;
const startLine = (_nodes$0$loc = nodes[0].loc) == null ? void 0 : _nodes$0$loc.start.line;
if (startLine != null && startLine !== this._buf.getCurrentLine()) {
indent = true;
}
}
if (indent) this.indent();
const newlineOpts = {
addNewlines: opts.addNewlines,
nextNodeStartLine: 0
};
const separator = opts.separator ? opts.separator.bind(this) : null;
const len = nodes.length;
for (let i = 0; i < len; i++) {
const node = nodes[i];
if (!node) continue;
if (opts.statement) this._printNewline(i === 0, newlineOpts);
this.print(node, parent, undefined, opts.trailingCommentsLineOffset || 0);
opts.iterator == null ? void 0 : opts.iterator(node, i);
if (i < len - 1) separator == null ? void 0 : separator();
if (opts.statement) {
if (i + 1 === len) {
this.newline(1);
} else {
var _nextNode$loc;
const nextNode = nodes[i + 1];
newlineOpts.nextNodeStartLine = ((_nextNode$loc = nextNode.loc) == null ? void 0 : _nextNode$loc.start.line) || 0;
this._printNewline(true, newlineOpts);
}
}
}
if (indent) this.dedent();
}
printAndIndentOnComments(node, parent) {
const indent = node.leadingComments && node.leadingComments.length > 0;
if (indent) this.indent();
this.print(node, parent);
if (indent) this.dedent();
}
printBlock(parent) {
const node = parent.body;
if (node.type !== "EmptyStatement") {
this.space();
}
this.print(node, parent);
}
_printTrailingComments(node, parent, lineOffset) {
const {
innerComments,
trailingComments
} = node;
if (innerComments != null && innerComments.length) {
this._printComments(2, innerComments, node, parent, lineOffset);
}
if (trailingComments != null && trailingComments.length) {
this._printComments(2, trailingComments, node, parent, lineOffset);
}
}
_printLeadingComments(node, parent) {
const comments = node.leadingComments;
if (!(comments != null && comments.length)) return;
this._printComments(0, comments, node, parent);
}
_maybePrintInnerComments() {
if (this._endsWithInnerRaw) this.printInnerComments();
this._endsWithInnerRaw = true;
this._indentInnerComments = true;
}
printInnerComments() {
const node = this._printStack[this._printStack.length - 1];
const comments = node.innerComments;
if (!(comments != null && comments.length)) return;
const hasSpace = this.endsWith(32);
const indent = this._indentInnerComments;
const printedCommentsCount = this._printedComments.size;
if (indent) this.indent();
this._printComments(1, comments, node);
if (hasSpace && printedCommentsCount !== this._printedComments.size) {
this.space();
}
if (indent) this.dedent();
}
noIndentInnerCommentsHere() {
this._indentInnerComments = false;
}
printSequence(nodes, parent, opts = {}) {
var _opts$indent;
opts.statement = true;
(_opts$indent = opts.indent) != null ? _opts$indent : opts.indent = false;
this.printJoin(nodes, parent, opts);
}
printList(items, parent, opts = {}) {
if (opts.separator == null) {
opts.separator = commaSeparator;
}
this.printJoin(items, parent, opts);
}
_printNewline(newLine, opts) {
const format = this.format;
if (format.retainLines || format.compact) return;
if (format.concise) {
this.space();
return;
}
if (!newLine) {
return;
}
const startLine = opts.nextNodeStartLine;
const lastCommentLine = this._lastCommentLine;
if (startLine > 0 && lastCommentLine > 0) {
const offset = startLine - lastCommentLine;
if (offset >= 0) {
this.newline(offset || 1);
return;
}
}
if (this._buf.hasContent()) {
this.newline(1);
}
}
_shouldPrintComment(comment) {
if (comment.ignore) return 0;
if (this._printedComments.has(comment)) return 0;
if (this._noLineTerminator && (HAS_NEWLINE.test(comment.value) || HAS_BlOCK_COMMENT_END.test(comment.value))) {
return 2;
}
this._printedComments.add(comment);
if (!this.format.shouldPrintComment(comment.value)) {
return 0;
}
return 1;
}
_printComment(comment, skipNewLines) {
const noLineTerminator = this._noLineTerminator;
const isBlockComment = comment.type === "CommentBlock";
const printNewLines = isBlockComment && skipNewLines !== 1 && !this._noLineTerminator;
if (printNewLines && this._buf.hasContent() && skipNewLines !== 2) {
this.newline(1);
}
const lastCharCode = this.getLastChar();
if (lastCharCode !== 91 && lastCharCode !== 123) {
this.space();
}
let val;
if (isBlockComment) {
val = `/*${comment.value}*/`;
if (this.format.indent.adjustMultilineComment) {
var _comment$loc;
const offset = (_comment$loc = comment.loc) == null ? void 0 : _comment$loc.start.column;
if (offset) {
const newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g");
val = val.replace(newlineRegex, "\n");
}
let indentSize = this.format.retainLines ? 0 : this._buf.getCurrentColumn();
if (this._shouldIndent(47) || this.format.retainLines) {
indentSize += this._getIndent();
}
val = val.replace(/\n(?!$)/g, `\n${" ".repeat(indentSize)}`);
}
} else if (!noLineTerminator) {
val = `//${comment.value}`;
} else {
val = `/*${comment.value}*/`;
}
if (this.endsWith(47)) this._space();
this.source("start", comment.loc);
this._append(val, isBlockComment);
if (!isBlockComment && !noLineTerminator) {
this.newline(1, true);
}
if (printNewLines && skipNewLines !== 3) {
this.newline(1);
}
}
_printComments(type, comments, node, parent, lineOffset = 0) {
const nodeLoc = node.loc;
const len = comments.length;
let hasLoc = !!nodeLoc;
const nodeStartLine = hasLoc ? nodeLoc.start.line : 0;
const nodeEndLine = hasLoc ? nodeLoc.end.line : 0;
let lastLine = 0;
let leadingCommentNewline = 0;
const maybeNewline = this._noLineTerminator ? function () {} : this.newline.bind(this);
for (let i = 0; i < len; i++) {
const comment = comments[i];
const shouldPrint = this._shouldPrintComment(comment);
if (shouldPrint === 2) {
hasLoc = false;
break;
}
if (hasLoc && comment.loc && shouldPrint === 1) {
const commentStartLine = comment.loc.start.line;
const commentEndLine = comment.loc.end.line;
if (type === 0) {
let offset = 0;
if (i === 0) {
if (this._buf.hasContent() && (comment.type === "CommentLine" || commentStartLine != commentEndLine)) {
offset = leadingCommentNewline = 1;
}
} else {
offset = commentStartLine - lastLine;
}
lastLine = commentEndLine;
maybeNewline(offset);
this._printComment(comment, 1);
if (i + 1 === len) {
maybeNewline(Math.max(nodeStartLine - lastLine, leadingCommentNewline));
lastLine = nodeStartLine;
}
} else if (type === 1) {
const offset = commentStartLine - (i === 0 ? nodeStartLine : lastLine);
lastLine = commentEndLine;
maybeNewline(offset);
this._printComment(comment, 1);
if (i + 1 === len) {
maybeNewline(Math.min(1, nodeEndLine - lastLine));
lastLine = nodeEndLine;
}
} else {
const offset = commentStartLine - (i === 0 ? nodeEndLine - lineOffset : lastLine);
lastLine = commentEndLine;
maybeNewline(offset);
this._printComment(comment, 1);
}
} else {
hasLoc = false;
if (shouldPrint !== 1) {
continue;
}
if (len === 1) {
const singleLine = comment.loc ? comment.loc.start.line === comment.loc.end.line : !HAS_NEWLINE.test(comment.value);
const shouldSkipNewline = singleLine && !isStatement(node) && !isClassBody(parent) && !isTSInterfaceBody(parent) && !isTSEnumDeclaration(parent);
if (type === 0) {
this._printComment(comment, shouldSkipNewline && node.type !== "ObjectExpression" || singleLine && isFunction(parent, {
body: node
}) ? 1 : 0);
} else if (shouldSkipNewline && type === 2) {
this._printComment(comment, 1);
} else {
this._printComment(comment, 0);
}
} else if (type === 1 && !(node.type === "ObjectExpression" && node.properties.length > 1) && node.type !== "ClassBody" && node.type !== "TSInterfaceBody") {
this._printComment(comment, i === 0 ? 2 : i === len - 1 ? 3 : 0);
} else {
this._printComment(comment, 0);
}
}
}
if (type === 2 && hasLoc && lastLine) {
this._lastCommentLine = lastLine;
}
}
}
Object.assign(Printer.prototype, generatorFunctions);
{
Printer.prototype.Noop = function Noop() {};
}
var _default = Printer;
exports.default = _default;
function commaSeparator() {
this.tokenChar(44);
this.space();
}
//# sourceMappingURL=printer.js.map
