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const { find } = require('./find');
const parse = require('./parse');
const generate = require('./serialize-node');
const core = {
// 通过选择器获取，返回ast片段
getAstsBySelector(
ast,
selector,
{ strictSequence, deep, parseOptions, expando = 'g123o456g789o' } = {}
) {
//strictSequence作用：
// 有的时候数组不要求顺序，如{a:$_$}匹配{b:1, a:2}
// 有的时候需要，如function($_$, $_$)匹配function(a, b) {}
if (!Array.isArray(selector)) {
selector = [selector];
}
let nodePathList = [];
let matchWildCardList = [];
const selectorAst = selector.map((item) => {
const sel = getSelector(
item,
this.parseOptions || parseOptions,
expando
);
Iif (!sel.nodeType) {
throw new Error(
'语句类型缺失，请在 https://github.com/thx/gogocode/issues 上提供您的代码样例'
);
}
return sel;
});
// const posStrList = [];
const reachedNodeList = [];
selectorAst.forEach((item) => {
const res = find.call(
ast,
item.nodeType,
item.structure,
strictSequence,
deep,
expando
);
res.nodePathList.forEach((p, i) => {
// let posStr = '';
// if (p.node.content.openStart) {
// posStr = `${p.node.content.openStart.startPosition},${p.node.content.openEnd.endPosition}`;
// } else if (p.node.content.value) {
// posStr = `${p.node.content.value.startPosition},${p.node.content.value.endPosition}`;
// }
// if (posStrList.indexOf(posStr) == -1) {
// // 去重
// nodePathList.push(p);
// matchWildCardList.push(res.matchWildCardList[i]);
// posStrList.push(posStr);
// }
if (reachedNodeList.indexOf(p.node.content) == -1) {
nodePathList.push(p);
matchWildCardList.push(res.matchWildCardList[i]);
reachedNodeList.push(p.node.content)
}
});
});
return {
nodePathList,
matchWildCardList,
pathList: nodePathList,
extraDataList: matchWildCardList
};
},
getParentListByAst(path) {
const list = [];
while (path && path.parentPath) {
list.push(path.parentPath);
path = path.parentPath;
}
return list;
},
buildAstByAstStr(
str,
astPatialMap = {},
{ isProgram = false, parseOptions } = {}
) {
try {
const ast = parse(str, parseOptions);
const program = core.replaceStrByAst(ast, astPatialMap);
if (program) {
if (isProgram) {
return program;
} else {
Eif (program.content.children && program.content.children[0]) {
if (program.content.children.length > 1) {
return program.content.children
} else if (program.content.children.length == 1) {
return program.content.children[0];
} else E{
return null
}
}
}
} else E{
return null;
}
} catch (e) {
console.log('buildAstByAstStr failed:' + e);
}
},
replaceStrByAst(ast, astPatialMap = {}) {
for (let key in astPatialMap) {
const valueAst = astPatialMap[key];
const { nodePathList } = core.getAstsBySelector(
ast,
`'$_$${key}$_$'`
);
if (nodePathList.length > 0) {
nodePathList[0].replace(valueAst);
}
}
return ast;
},
replaceAstByAst(oldAst, newAst, _index) {
if (oldAst.parent && oldAst.parent.node && oldAst.parent.node.content) {
oldAst.parent.node.content.children.splice(
_index,
1,
newAst
);
} else Eif (oldAst.node.nodeType == 'document') {
oldAst.node.content.children = [newAst];
}
},
replaceSelBySel(
ast,
selector,
replacer,
strictSequence,
parseOptions,
expando = 'g123o456g789o'
) {
// 用于结构不一致的，整体替换
if (ast.node) {
ast = ast.node;
}
const { nodePathList, matchWildCardList } = core.getAstsBySelector(
ast,
selector,
{
strictSequence,
deep: 'nn',
parseOptions: this.parseOptions || parseOptions,
expando
}
);
const originReplacer = replacer;
nodePathList.forEach((path, i) => {
const extra = matchWildCardList[i];
replacer = originReplacer;
Iif (typeof replacer == 'function') {
replacer = replacer(extra, path);
}
if (Object.keys(extra).length > 0 && typeof replacer == 'string') {
let newReplacer = replacer;
for (let key in extra) {
if (key.match(/\$\$\$/)) {
let key$$$ = key.replace(/\$\$\$/, '');
key$$$ == '$' && (key$$$ = '');
let join = '\n';
let wildCardCode = extra[key]
.map((item) => {
let codeStr = '';
if (item.key) {
if (item.value) {
codeStr = `${item.key.content}="${item.value.content}"`;
} else E{
codeStr = item.key.content;
}
} else if (item.nodeType == 'text') {
codeStr = item.content.value.content;
} else Eif (item.nodeType == 'tag') {
codeStr = generate(item);
}
try {
// 嵌套replace
const childAst = core.buildAstByAstStr(
generate(item), {}, { isProgram: true }
);
core.replaceSelBySel(
childAst,
selector,
replacer,
strictSequence,
parseOptions,
expando
);
codeStr = generate(childAst);
} catch (e) {
//
}
return codeStr;
})
.join(join);
// 不能都用,连接，还是需要找到$_$
newReplacer = newReplacer.replace(
'$$$' + key$$$,
wildCardCode
);
} else {
let wildCardCode = extra[key][0].value;
key == '0' && (key = '');
newReplacer = newReplacer
.replace(new RegExp(`\\$_\\$${key}`, 'g'), wildCardCode);
// 通过选择器替换ast，返回完整ast
}
}
core.replace(path, newReplacer)
} else {
core.replace(path, replacer)
}
});
},
replace(oldPath, newReplacer) {
let parentContent, index, isDoc, newNodes;
Iif (oldPath.node.nodeType == 'document') {
isDoc = true;
} else {
parentContent = oldPath.parent.node.content.children || [];
index = parentContent.indexOf(oldPath.node);
}
if (!newReplacer) {
// 删除节点
Eif (index > -1) {
Iif (isDoc) {
oldPath.node.content.children = []
} else {
parentContent.splice(index, 1);
}
}
return;
} else if (newReplacer.nodeType == 'document') {
newNodes = newReplacer.content.children || []
} else if (typeof newReplacer == 'string') {
// 通过字符串解析为node
Eif (index > -1) {
newNodes = core.buildAstByAstStr(
newReplacer,
{},
{ isProgram: true }
).content.children;
}
} else Eif (newReplacer[0] && newReplacer[0].nodePath) {
// AST实例
newNodes = [newReplacer.node]
} else if (newReplacer.type) {
// AST node
newNodes = [newReplacer]
}
Iif (isDoc) {
oldPath.node.content.children = newNodes
} else {
newNodes.forEach(newNode => {
newNode.parentRef = oldPath.parent.node;
parentContent.splice(index, 1, newNode);
})
}
},
removeAst(ast, selector, { strictSequence, parseOptions, expando } = {}) {
if (!ast || typeof ast !== 'object') {
throw new Error('remove failed! first argument mast be object');
}
if (
!selector ||
(typeof selector !== 'object' &&
typeof selector !== 'string' &&
!Array.isArray(selector))
) {
throw new Error(
'remove failed! first argument mast be object、string or string array'
);
}
// const selectorAst = getSelector(selector, this.parseOptions);
// console.log(selectorAst)
const { nodePathList } = core.getAstsBySelector(ast, selector, {
strictSequence,
parseOptions,
expando
});
// const { nodePathList } = find.call(ast, selectorAst.nodeType, selectorAst.structure, true, 'nn');
// console.log(nodePathList)
nodePathList.forEach((path) => {
// 多条语句逗号分割的话，只删除一个；一条语句的话，删除父节点
const parentChildList = path.parent.node.content.children;
const index = parentChildList.indexOf(path.node);
parentChildList.splice(index, 1);
});
},
remove(ast) {
try {
ast.node.parentRef.content.children.forEach((item, index) => {
if (item == ast.node) {
ast.node.parentRef.content.children.splice(index, 1);
}
});
} catch (e) {
throw `remove failed! ${e}`;
}
}
};
module.exports = core;
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