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					161 lines
				
				3.6 KiB
			
		
		
			
		
	
	
					161 lines
				
				3.6 KiB
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											3 years ago
										 
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								"use strict";
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								Object.defineProperty(exports, "__esModule", {
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								  value: true
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								});
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								exports.find = find;
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								exports.findParent = findParent;
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								exports.getAncestry = getAncestry;
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								exports.getDeepestCommonAncestorFrom = getDeepestCommonAncestorFrom;
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								exports.getEarliestCommonAncestorFrom = getEarliestCommonAncestorFrom;
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								exports.getFunctionParent = getFunctionParent;
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								exports.getStatementParent = getStatementParent;
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								exports.inType = inType;
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								exports.isAncestor = isAncestor;
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								exports.isDescendant = isDescendant;
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								var _t = require("@babel/types");
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								const {
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								  VISITOR_KEYS
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								} = _t;
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								function findParent(callback) {
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								  let path = this;
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								  while (path = path.parentPath) {
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								    if (callback(path)) return path;
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								  }
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								  return null;
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								}
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								function find(callback) {
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								  let path = this;
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								  do {
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								    if (callback(path)) return path;
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								  } while (path = path.parentPath);
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								  return null;
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								}
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								function getFunctionParent() {
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								  return this.findParent(p => p.isFunction());
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								}
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								function getStatementParent() {
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								  let path = this;
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								  do {
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								    if (!path.parentPath || Array.isArray(path.container) && path.isStatement()) {
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								      break;
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								    } else {
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								      path = path.parentPath;
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								    }
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								  } while (path);
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								  if (path && (path.isProgram() || path.isFile())) {
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								    throw new Error("File/Program node, we can't possibly find a statement parent to this");
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								  }
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								  return path;
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								}
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								function getEarliestCommonAncestorFrom(paths) {
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								  return this.getDeepestCommonAncestorFrom(paths, function (deepest, i, ancestries) {
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								    let earliest;
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								    const keys = VISITOR_KEYS[deepest.type];
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								    for (const ancestry of ancestries) {
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								      const path = ancestry[i + 1];
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								      if (!earliest) {
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								        earliest = path;
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								        continue;
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								      }
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								      if (path.listKey && earliest.listKey === path.listKey) {
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								        if (path.key < earliest.key) {
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								          earliest = path;
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								          continue;
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								        }
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								      }
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								      const earliestKeyIndex = keys.indexOf(earliest.parentKey);
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								      const currentKeyIndex = keys.indexOf(path.parentKey);
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								      if (earliestKeyIndex > currentKeyIndex) {
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								        earliest = path;
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								      }
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								    }
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								    return earliest;
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								  });
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								}
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								function getDeepestCommonAncestorFrom(paths, filter) {
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								  if (!paths.length) {
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								    return this;
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								  }
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								  if (paths.length === 1) {
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								    return paths[0];
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								  }
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								  let minDepth = Infinity;
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								  let lastCommonIndex, lastCommon;
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								  const ancestries = paths.map(path => {
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								    const ancestry = [];
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								    do {
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								      ancestry.unshift(path);
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								    } while ((path = path.parentPath) && path !== this);
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								    if (ancestry.length < minDepth) {
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								      minDepth = ancestry.length;
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								    }
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								    return ancestry;
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								  });
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								  const first = ancestries[0];
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								  depthLoop: for (let i = 0; i < minDepth; i++) {
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								    const shouldMatch = first[i];
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								    for (const ancestry of ancestries) {
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								      if (ancestry[i] !== shouldMatch) {
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								        break depthLoop;
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								      }
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								    }
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								    lastCommonIndex = i;
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								    lastCommon = shouldMatch;
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								  }
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								  if (lastCommon) {
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								    if (filter) {
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								      return filter(lastCommon, lastCommonIndex, ancestries);
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								    } else {
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								      return lastCommon;
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								    }
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								  } else {
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								    throw new Error("Couldn't find intersection");
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								  }
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								}
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								function getAncestry() {
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								  let path = this;
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								  const paths = [];
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								  do {
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								    paths.push(path);
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								  } while (path = path.parentPath);
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								  return paths;
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								}
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								function isAncestor(maybeDescendant) {
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								  return maybeDescendant.isDescendant(this);
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								}
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								function isDescendant(maybeAncestor) {
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								  return !!this.findParent(parent => parent === maybeAncestor);
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								}
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								function inType(...candidateTypes) {
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								  let path = this;
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								  while (path) {
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								    for (const type of candidateTypes) {
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								      if (path.node.type === type) return true;
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								    }
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								    path = path.parentPath;
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								  }
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								  return false;
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								}
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								//# sourceMappingURL=ancestry.js.map
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