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generate = require('./js-core/generate');
const htmlGenerate = require('./html-core/serialize-node');
const vueGenerate = require('./vue-core/generate');
const core = require('./js-core/core');
const htmlCore = require('./html-core/core')
const vueCore = require('./vue-core/core')
const NodePath = require('./NodePath');
const filterProp = require('./js-core/filter-prop')
const { isObject } = require('./util')
const languageMap = {
'js': {
generate,
core
},
'html': {
generate: htmlGenerate,
core: htmlCore
},
'vue': {
generate: vueGenerate,
core: vueCore
}
}
class AST {
constructor(nodePath, { parseOptions, match, rootNode } = {}) {
if (nodePath) {
this[0] = {
nodePath, match
}
}
this.rootNode = rootNode;
this.expando = 'g' + ('' + Math.random()).replace( /\D/g, "" ) + 'g';
this.parseOptions = parseOptions;
}
get node() {
return this[0] ? this[0].nodePath.node : null
}
get value() {
return this[0] ? this[0].nodePath.value : null
}
get match() {
return this[0] ? this[0].match : []
}
get isHtml() {
return this.parseOptions && (this.parseOptions.html || this.parseOptions.language == 'html');
}
get language() {
return (this.parseOptions && this.parseOptions.language) || 'js';
}
get core() {
return languageMap[this.language].core
}
get _index() {
initParent(this);
// todo js
return this[0]._index;
}
get length() {
let i = 0;
while(this[i]) {
i++
}
return i;
}
each(callback) {
let i = 0;
const newAST = cloneAST(this)
while (this[i]) {
const { nodePath, match } = this[i]
const eachNode = new AST(nodePath, { parseOptions: this.parseOptions, match, rootNode: this.rootNode})
callback(eachNode, i);
newAST[i] = eachNode[0] || null
i++;
}
return newAST
}
find(selector, options = {}) {
if (!selector) {
throw new Error('find failed! first argument should not be null!')
}
Iif (!this[0]) {
return this;
}
const { nodePath } = this[0];
// if (typeof selector !== 'string' && !Array.isArray(selector)) {
// throw new Error('find failed! Nodepath is null!');
// }
const pOptions = options.parseOptions || this.parseOptions;
const {nodePathList, matchWildCardList, extra = {} } = this.core.getAstsBySelector(
nodePath.node,
selector, {
strictSequence: options.ignoreSequence === false,
parseOptions: pOptions,
expando: this.expando,
deep: options.deep
}
);
const newAST = cloneAST(this)
if (!newAST.rootNode) {
newAST.rootNode = this[0].nodePath;
}
nodePathList.forEach((nodePath, i) => {
// 把this里的parentPath接到nodePath上
if (this.language == 'js') {
let theNodePath = nodePath;
while(theNodePath.parentPath) {
if (theNodePath.parentPath && theNodePath.parentPath.name == 'root') {
if (theNodePath.parentPath.node.type != 'File') {
theNodePath.parentPath = this[0].nodePath;
}
break;
}
theNodePath = theNodePath.parentPath;
}
}
newAST[i] = { nodePath, parseOptions: extra.parseOptions || pOptions, match: matchWildCardList[i] };
})
if (extra.parseOptions) {
newAST.parseOptions = extra.parseOptions
}
return newAST;
}
parent(option) {
let level = 0;
if (typeof option == 'number') {
level = option
}
if (!this[0]) {
return this;
}
// if (!this[0].parentList) {
initParent(this)
// }
let parent = [this[0].parentList[level]]
function parentMatch (full, partial) {
return Object.keys(partial).every(prop => {
if (!full || !partial) return false
Iif (!full[prop]) return false;
Iif (isObject(partial[prop])) {
return parentMatch(full[prop], partial[prop])
} else {
return full[prop] == partial[prop]
}
})
}
if (isObject(option)) {
parent = [];
this[0].parentList.forEach(p => {
if (parentMatch(p.node, option)) {
parent.push(p)
}
})
}
const newAST = cloneAST(this)
if (parent[0]) {
parent.forEach((p, i) => {
newAST[i] = { nodePath: p, parseOptions: this.parseOptions };
})
return newAST;
} else {
return this;
}
}
parents() {
if (!this[0]) {
return this;
}
// if (!this[0].parentList) {
initParent(this)
// }
const { parentList } = this[0];
const newAST = cloneAST(this)
parentList.forEach((nodePath, i) => {
newAST[i] = { nodePath, parseOptions: this.parseOptions, match: null };
})
return newAST;
}
root(option) {
if (!this.rootNode) {
return this;
}
const newAST = cloneAST(this)
newAST[0] = { nodePath: this.rootNode }
newAST.rootNode = null;
if (this.parseOptions && this.parseOptions.rootLanguage == 'vue') {
Iif (option == 'template') {
newAST[0] = { nodePath: this.rootNode.node.templateAst }
} else Iif (option == 'script') {
newAST[0] = { nodePath: this.rootNode.node.scriptAst }
} else {
newAST.parseOptions = Object.assign(
{},
this.parseOptions,
{ language: 'vue', rootLanguage: undefined });
}
}
return newAST;
}
has(selector, options) {
return !!this.find(selector, options)[0]
}
siblings() {
if (!this[0]) {
return this;
}
// if (!Array.isArray(this[0].siblings)) {
initSiblings(this);
// }
const siblings = this[0].siblings || [];
const newAST = cloneAST(this)
siblings.forEach((sibling, i) => {
newAST[i] = sibling
});
return newAST;
}
prevAll() {
if (!this[0]) {
return this;
}
// if (!Array.isArray(this[0].siblings)) {
initSiblings(this);
// }
const prevAll = this[0].prevAll || [];
const newAST = cloneAST(this)
prevAll.forEach((prev, i) => {
newAST[i] = prev
});
return newAST;
}
prev() {
if (!this[0]) {
return this;
}
// if (!Array.isArray(this[0].siblings)) {
initSiblings(this);
// }
const prevAll = this[0].prevAll || [];
const newAST = cloneAST(this)
newAST[0] = prevAll[prevAll.length - 1];
return newAST;
}
nextAll() {
if (!this[0]) {
return this;
}
// if (!Array.isArray(this[0].siblings)) {
initSiblings(this);
// }
const nextAll = this[0].nextAll || [];
const newAST = cloneAST(this)
nextAll.forEach((next, i) => {
newAST[i] = next
});
return newAST;
}
next() {
if (!this[0]) {
return this;
}
// if (!Array.isArray(this[0].siblings)) {
initSiblings(this);
// }
const nextAll = this[0].nextAll || [];
const newAST = cloneAST(this)
newAST[0] = nextAll[0];
return newAST;
}
eq(index) {
index = index || 0;
const { nodePath, match } = this[index] || {}
const newAST = cloneAST(this)
newAST[0] = { nodePath, parseOptions: this.parseOptions, match }
return newAST;
}
attr(arg1, arg2) {
if (!this[0] || !this[0].nodePath || !this[0].nodePath.node) {
return this;
}
let attrMap = {};
if (arg2) {
// arg1是key arg2是value
if (typeof arg1 == 'string') {
attrMap = { [arg1]: arg2 }
} else {
throw new Error('attr failed! args[0] should be string!')
}
} else {
if (typeof arg1 == 'string') {
// 取某个属性
return getAttrValue(this[0].nodePath.node, arg1);
} else Eif (typeof arg1 == 'object') {
attrMap = arg1;
}
}
setAttrValue(this[0].nodePath.node, attrMap);
return this;
}
child(attrName) {
Iif (!this[0] || !this[0].nodePath || !this[0].nodePath.node) {
return this;
}
const keyList = attrName.split('.');
let currentNode = this.node;
let nodePath = this[0].nodePath;
let parentPath = this[0].nodePath.parentPath;
let newNodeAST;
let deep = 0;
if (this.node.program) {
nodePath = nodePath.get('program', 'body', '0')
currentNode = currentNode.program.body[0];
}
keyList.forEach(attr => {
const node = currentNode[attr];
Eif (node) {
if (this.language == 'js') {
newNodeAST = cloneAST(this);
nodePath = nodePath.get(attr)
newNodeAST[0] = { nodePath, parseOptions: this.parseOptions }
} else E{
newNodeAST = cloneAST(this);
parentPath = nodePath
nodePath = new NodePath(currentNode[attr], nodePath, nodePath)
newNodeAST[0] = { nodePath, parseOptions: this.parseOptions }
}
currentNode = node
deep++
}
})
if (deep == keyList.length) {
return newNodeAST;
} else E{
return null
}
}
clone() {
if (!this[0]) {
return this;
}
let nodePath;
// html深度克隆时需要忽略parentRef
if (this.isHtml) {
const parentRefList = []
markParent(this[0].nodePath.node)
const newNode = JSON.parse(JSON.stringify(this[0].nodePath.node));
resetParent(newNode);
resetParent(this[0].nodePath.node);
nodePath = new NodePath(
newNode,
this[0].nodePath.parent,
this[0].nodePath.parentPath
)
function resetParent(node) {
for (let key in node) {
if (key == 'parentRef') {
node[key] = parentRefList[node[key]]
} else if (isObject(node[key])) {
if (Array.isArray(node[key])) {
node[key].forEach(n => {
resetParent(n)
});
} else {
resetParent(node[key]);
}
}
}
}
function markParent(node) {
for (let key in node) {
if (key == 'parentRef') {
parentRefList.push(node[key]);
node[key] = parentRefList.length - 1;
} else if (isObject(node[key])) {
if (Array.isArray(node[key])) {
node[key].forEach(n => {
markParent(n)
});
} else {
markParent(node[key]);
}
}
}
}
} else {
const node = {};
// js需要做一层属性过滤，否则会有环形依赖
filterProp(this[0].nodePath.node, node, [
'computed',
'range',
'leadingComments',
'shorthand',
'extra',
'static',
'typeParameters',
'tokens'
]);
nodePath = new NodePath(
// JSON.parse(JSON.stringify(this[0].nodePath.node)),
JSON.parse(JSON.stringify(node)),
this[0].nodePath.parent,
this[0].nodePath.parentPath
)
}
const { match } = this[0]
const newAST = cloneAST(this)
newAST[0] = { nodePath, parseOptions: this.parseOptions, match }
return newAST;
}
replace(selector, replacer, { ignoreSequence, parseOptions } = {}) {
if (!this[0]) {
// throw new Error('replace failed! Nodepath is null!');
return this;
}
parseOptions = parseOptions || this.parseOptions
this.core.replaceSelBySel(this[0].nodePath, selector, replacer, ignoreSequence === false, parseOptions, this.expando)
return this;
}
replaceBy(replacer) {
if (!this[0]) {
return this.root();
}
if (replacer[0] && replacer[0].nodePath) {
replacer = replacer[0].nodePath.node
}
if (typeof replacer == 'string') {
replacer = this.core.buildAstByAstStr(replacer);
}
if (replacer.type == 'File') {
replacer = replacer.program.body[0]
}
let i = 0;
while(this[i]) {
this.core.replaceAstByAst(this[i].nodePath, replacer, this._index)
i++
}
return this;
}
insertSiblingNode(node, type) {
if (!this[0]) {
return this;
}
if (!node.type && !node.nodeType) {
throw new Error('insert failed! Unexpected node for insert!')
}
if (node.type && node.type.match('Comment')) {
// 处理注释
let targetNode = this;
// if (this.node.type == 'File') {
// targetNode = $(this.node.program.body)
// }
node.trailing = type == 'after';
node.leading = type == 'before';
this.insertChildNode(
'comments',
node,
type == 'after' ? 'append' : 'prepend')
return;
}
// if (!this[0].parentList) {
initParent(this)
// }
if (this.isHtml) {
let p;
let index = -1
if (this.node.nodeType == 'document') {
p = this.node.content.children;
index = type == 'before' ? 0 : p.length - 1
} else {
const parent = this.parent();
// todotodo
p = parent.attr('content.children') || [];
p.forEach((item, i) => {
if (item == this.node) {
index = i
}
})
}
if (type == 'before') {
p.splice(index, 0, node)
} else {
p.splice(index + 1, 0, node)
}
} else {
const parentList = this[0].parentList;
if ((!parentList || parentList.length == 0) && this.node.type == 'File') {
if (type == 'before') {
this.attr('program.body').unshift(node)
} else {
this.attr('program.body').push(node)
}
return;
}
let getArrayParent = false;
let i = 0;
let selfPathNode = this[0].nodePath.value;
let selfIndex = -1;
while(!getArrayParent) {
Iif (!parentList[i] || !parentList[i].value) {
getArrayParent = true;
} else if (Array.isArray(parentList[i].value)) {
getArrayParent = true;
parentList[i].value.forEach((nodePath, index) => {
Eif (nodePath == selfPathNode) {
selfIndex = index;
}
})
if (type == 'after') {
parentList[i].value.splice(selfIndex + 1, 0, node)
} else E{
parentList[i].value.splice(selfIndex, 0, node)
}
}
selfPathNode = parentList[i].value;
i++
}
}
}
after(node) {
if (!node) {
throw new Error('after failed! Unexpected node for insert!')
}
if (typeof node == 'string') {
node = this.core.buildAstByAstStr(node)
}
if (node[0] && node[0].nodePath) {
node = node[0].nodePath.value
}
if (node.type == 'File') {
if (node.program.body.length > 0) {
node.program.body.forEach(item => {
this.insertSiblingNode(item, 'after');
})
return this;
} else E{
return this;
}
}
Eif (!Array.isArray(node)) {
node = [node]
}
node.forEach(n => {
this.insertSiblingNode(n, 'after');
})
return this;
}
before(node) {
if (!node) {
throw new Error('before failed! Unexpected node for insert!')
}
if (typeof node == 'string') {
node = this.core.buildAstByAstStr(node)
}
if (node[0] && node[0].type == 'Decorator') {
this.node.decorators = (this.node.decorators || []).concat(node);
return this;
}
if (node[0] && node[0].nodePath) {
node = node[0].nodePath.value
}
if (node.type == 'File') {
if (node.program.body.length > 0) {
node.program.body.reverse().forEach(item => {
this.insertSiblingNode(item, 'before');
})
return this;
} else E{
return this;
}
}
if (!Array.isArray(node)) {
node = [node]
}
node.reverse().forEach(n => {
this.insertSiblingNode(n, 'before');
})
return this;
}
insertChildNode(attr, node, type) {
if (!this[0] || !this[0].nodePath) {
return;
}
let selfNode = this[0].nodePath.value;
let bodyIndex = selfNode.program && type == 'append' ? selfNode.program.body.length - 1 : 0
Eif (!Array.isArray(selfNode)) {
// for(let key in selfNode) {
// if (Array.isArray(selfNode[key])) {
// selfNode = selfNode[key]
// }
// }
if (attr == 'content.children') {
selfNode.content.children = selfNode.content.children || [];
selfNode = selfNode.content.children;
} else if (selfNode.program && selfNode.program.body) {
if (attr == 'program.body') {
selfNode = selfNode.program.body;
} else {
selfNode.program.body[bodyIndex][attr] = selfNode.program.body[bodyIndex][attr] || []
selfNode = selfNode.program.body[bodyIndex][attr]
}
} else {
selfNode[attr] = selfNode[attr] || [];
selfNode = selfNode[attr];
if (!Array.isArray(selfNode)) {
selfNode = selfNode.body
}
}
}
if (node.type == 'File' && node.program.body) {
node = node.program.body[bodyIndex]
Iif (!node) return;
}
Eif (selfNode) {
if (type == 'append') {
selfNode.push(node);
} else {
selfNode.unshift(node);
}
}
}
append(attr, node) {
if (!attr) {
return this;
}
if (this.isHtml) {
node = attr;
attr = 'content.children';
}
if (!node) {
node = attr;
attr = 'program.body'
}
if (typeof node == 'string') {
node = this.core.buildAstByAstStr(node)
}
if (node[0] && node[0].nodePath) {
node = node[0].nodePath.value
}
if (!Array.isArray(node)) {
node = [node]
}
node.forEach(n => {
this.insertChildNode(attr, n, 'append');
})
return this;
}
prepend(attr, node) {
if (this.isHtml) {
node = attr;
attr = 'content.children';
}
if (!node) {
node = attr;
attr = 'program.body'
}
if (typeof node == 'string') {
node = this.core.buildAstByAstStr(node)
}
if (node[0] && node[0].nodePath) {
node = node[0].nodePath.value
}
Eif (!Array.isArray(node)) {
node = [node]
}
node.reverse().forEach(n => {
this.insertChildNode(attr, n, 'prepend');
})
return this;
}
empty() {
this.each(item => {
if (item.language == 'html') {
Eif (Array.isArray(item.attr('content.children'))) {
item.attr('content.children', []);
}
} else Eif (item.language == 'js') {
Iif (Array.isArray(item[0].nodePath.value)) {
item[0].nodePath.value = [];
} else if (item.node.type == 'File') {
item.attr('program.body', [])
}
}
})
return this
}
remove(selector, options = {}) {
if (!this[0]) {
return this.root()
}
if (typeof selector == 'string' || Array.isArray(selector)) {
const pOptions = options.parseOptions || this.parseOptions;
let i = 0;
while(this[i]) {
this.core.removeAst(this.node, selector, {
strictSequence: options.ignoreSequence === false,
parseOptions: pOptions,
expando: this.expando
});
i++
}
} else {
let i = 0;
while(this[i]) {
this.core.remove(this[i].nodePath)
i++
}
}
return this.root()
}
generate({ isPretty = false } = {}) {
if (!this[0]) {
return '';
}
if (this.language == 'js') {
return generate(this[0].nodePath.node, isPretty)
} else {
return (languageMap[this.language].generate)(this[0].nodePath.value);
}
}
}
function cloneAST(ast) {
const newAST = new AST('', { parseOptions: ast.parseOptions, rootNode: ast.rootNode})
Iif (ast.sfc) {
newAST.sfc = ast.sfc
}
return newAST
}
function getAttrValue(node, attr) {
const keyList = attr.split('.');
let currentNode = node;
let deep = 0;
keyList.forEach(attr => {
if (currentNode[attr]) {
currentNode = currentNode[attr];
deep++
}
})
if (deep == keyList.length) {
return currentNode;
} else {
return null
}
}
function initParent(ast) {
if (ast.isHtml) {
ast[0].parentList = ast.core.getParentListByAst(ast[0].nodePath)
ast[0]._index = ast[0].parentList[0] ? ast[0].parentList[0].node.content.children.indexOf(ast[0].nodePath.node) : 0;
} else {
ast[0].parentList = core.getParentListByAst(ast[0].nodePath)
}
return ast[0].parentList
}
function initSiblings(ast) {
if (ast.language == 'html') {
const parent = ast.parent();
const siblings = (parent.attr('content.children') || []).map((node, index) => {
return {
_index: index,
nodePath: new NodePath(node, parent[0].nodePath, parent[0].nodePath),
parseOptions: ast.parseOptions
}
});
ast[0].siblings = siblings;
ast[0].prevAll = siblings.filter(s => s._index < ast._index);
ast[0].nextAll = siblings.filter(s => s._index > ast._index);
} else {
const parentList = initParent(ast);
if (!parentList || parentList.length == 0) {
return;
}
const parseOptions = ast.parseOptions;
let getArrayParent = false;
let i = 0;
const siblings = [];
const prevAll = [];
const nextAll = [];
let selfPathNode = ast[0].nodePath.value;
while(!getArrayParent) {
Iif (!parentList[i] || !parentList[i].value) {
getArrayParent = true;
} else if (Array.isArray(parentList[i].value)) {
getArrayParent = true;
let isPrev = true;
let childIndex = 0
while (parentList[i].__childCache[childIndex]) {
const nodePath = parentList[i].__childCache[childIndex]
if (nodePath.value == selfPathNode) {
// find self
isPrev = false;
} else {
siblings.push({ nodePath, parseOptions })
if (isPrev) {
prevAll.push({ nodePath, parseOptions })
} else {
nextAll.push({ nodePath, parseOptions })
}
}
childIndex++
}
ast[0].siblings = siblings;
ast[0].prevAll = prevAll;
ast[0].nextAll = nextAll;
}
selfPathNode = parentList[i].value;
i++
}
}
}
function setAttrValue(node, attrMap) {
for(const key in attrMap) {
const value = attrMap[key];
const keyList = key.split('.');
let currentNode = node;
keyList.forEach((attr, index) => {
if (index == keyList.length - 1) {
currentNode[attr] = value;
} else Eif (currentNode[attr]) {
currentNode = currentNode[attr]
}
})
}
}
module.exports = AST;
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