hexo/node_modules/@babel/generator/lib/node/whitespace.js

147 lines
4.7 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.nodes = void 0;
var _t = require("@babel/types");
const {
FLIPPED_ALIAS_KEYS,
isArrayExpression,
isAssignmentExpression,
isBinary,
isBlockStatement,
isCallExpression,
isFunction,
isIdentifier,
isLiteral,
isMemberExpression,
isObjectExpression,
isOptionalCallExpression,
isOptionalMemberExpression,
isStringLiteral
} = _t;
function crawlInternal(node, state) {
if (!node) return state;
if (isMemberExpression(node) || isOptionalMemberExpression(node)) {
crawlInternal(node.object, state);
if (node.computed) crawlInternal(node.property, state);
} else if (isBinary(node) || isAssignmentExpression(node)) {
crawlInternal(node.left, state);
crawlInternal(node.right, state);
} else if (isCallExpression(node) || isOptionalCallExpression(node)) {
state.hasCall = true;
crawlInternal(node.callee, state);
} else if (isFunction(node)) {
state.hasFunction = true;
} else if (isIdentifier(node)) {
state.hasHelper = state.hasHelper || node.callee && isHelper(node.callee);
}
return state;
}
function crawl(node) {
return crawlInternal(node, {
hasCall: false,
hasFunction: false,
hasHelper: false
});
}
function isHelper(node) {
if (!node) return false;
if (isMemberExpression(node)) {
return isHelper(node.object) || isHelper(node.property);
} else if (isIdentifier(node)) {
return node.name === "require" || node.name.charCodeAt(0) === 95;
} else if (isCallExpression(node)) {
return isHelper(node.callee);
} else if (isBinary(node) || isAssignmentExpression(node)) {
return isIdentifier(node.left) && isHelper(node.left) || isHelper(node.right);
} else {
return false;
}
}
function isType(node) {
return isLiteral(node) || isObjectExpression(node) || isArrayExpression(node) || isIdentifier(node) || isMemberExpression(node);
}
const nodes = {
AssignmentExpression(node) {
const state = crawl(node.right);
if (state.hasCall && state.hasHelper || state.hasFunction) {
return state.hasFunction ? 1 | 2 : 2;
}
},
SwitchCase(node, parent) {
return (!!node.consequent.length || parent.cases[0] === node ? 1 : 0) | (!node.consequent.length && parent.cases[parent.cases.length - 1] === node ? 2 : 0);
},
LogicalExpression(node) {
if (isFunction(node.left) || isFunction(node.right)) {
return 2;
}
},
Literal(node) {
if (isStringLiteral(node) && node.value === "use strict") {
return 2;
}
},
CallExpression(node) {
if (isFunction(node.callee) || isHelper(node)) {
return 1 | 2;
}
},
OptionalCallExpression(node) {
if (isFunction(node.callee)) {
return 1 | 2;
}
},
VariableDeclaration(node) {
for (let i = 0; i < node.declarations.length; i++) {
const declar = node.declarations[i];
let enabled = isHelper(declar.id) && !isType(declar.init);
if (!enabled && declar.init) {
const state = crawl(declar.init);
enabled = isHelper(declar.init) && state.hasCall || state.hasFunction;
}
if (enabled) {
return 1 | 2;
}
}
},
IfStatement(node) {
if (isBlockStatement(node.consequent)) {
return 1 | 2;
}
}
};
exports.nodes = nodes;
nodes.ObjectProperty = nodes.ObjectTypeProperty = nodes.ObjectMethod = function (node, parent) {
if (parent.properties[0] === node) {
return 1;
}
};
nodes.ObjectTypeCallProperty = function (node, parent) {
var _parent$properties;
if (parent.callProperties[0] === node && !((_parent$properties = parent.properties) != null && _parent$properties.length)) {
return 1;
}
};
nodes.ObjectTypeIndexer = function (node, parent) {
var _parent$properties2, _parent$callPropertie;
if (parent.indexers[0] === node && !((_parent$properties2 = parent.properties) != null && _parent$properties2.length) && !((_parent$callPropertie = parent.callProperties) != null && _parent$callPropertie.length)) {
return 1;
}
};
nodes.ObjectTypeInternalSlot = function (node, parent) {
var _parent$properties3, _parent$callPropertie2, _parent$indexers;
if (parent.internalSlots[0] === node && !((_parent$properties3 = parent.properties) != null && _parent$properties3.length) && !((_parent$callPropertie2 = parent.callProperties) != null && _parent$callPropertie2.length) && !((_parent$indexers = parent.indexers) != null && _parent$indexers.length)) {
return 1;
}
};
[["Function", true], ["Class", true], ["Loop", true], ["LabeledStatement", true], ["SwitchStatement", true], ["TryStatement", true]].forEach(function ([type, amounts]) {
[type].concat(FLIPPED_ALIAS_KEYS[type] || []).forEach(function (type) {
const ret = amounts ? 1 | 2 : 0;
nodes[type] = () => ret;
});
});
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