yeet

node_modules/istanbul-lib-report/lib/summarizer-factory.js

@@ -0,0 +1,284 @@
+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+'use strict';
+
+const coverage = require('istanbul-lib-coverage');
+const Path = require('./path');
+const { BaseNode, BaseTree } = require('./tree');
+
+class ReportNode extends BaseNode {
+    constructor(path, fileCoverage) {
+        super();
+
+        this.path = path;
+        this.parent = null;
+        this.fileCoverage = fileCoverage;
+        this.children = [];
+    }
+
+    static createRoot(children) {
+        const root = new ReportNode(new Path([]));
+
+        children.forEach(child => {
+            root.addChild(child);
+        });
+
+        return root;
+    }
+
+    addChild(child) {
+        child.parent = this;
+        this.children.push(child);
+    }
+
+    asRelative(p) {
+        if (p.substring(0, 1) === '/') {
+            return p.substring(1);
+        }
+        return p;
+    }
+
+    getQualifiedName() {
+        return this.asRelative(this.path.toString());
+    }
+
+    getRelativeName() {
+        const parent = this.getParent();
+        const myPath = this.path;
+        let relPath;
+        let i;
+        const parentPath = parent ? parent.path : new Path([]);
+        if (parentPath.ancestorOf(myPath)) {
+            relPath = new Path(myPath.elements());
+            for (i = 0; i < parentPath.length; i += 1) {
+                relPath.shift();
+            }
+            return this.asRelative(relPath.toString());
+        }
+        return this.asRelative(this.path.toString());
+    }
+
+    getParent() {
+        return this.parent;
+    }
+
+    getChildren() {
+        return this.children;
+    }
+
+    isSummary() {
+        return !this.fileCoverage;
+    }
+
+    getFileCoverage() {
+        return this.fileCoverage;
+    }
+
+    getCoverageSummary(filesOnly) {
+        const cacheProp = `c_${filesOnly ? 'files' : 'full'}`;
+        let summary;
+
+        if (Object.prototype.hasOwnProperty.call(this, cacheProp)) {
+            return this[cacheProp];
+        }
+
+        if (!this.isSummary()) {
+            summary = this.getFileCoverage().toSummary();
+        } else {
+            let count = 0;
+            summary = coverage.createCoverageSummary();
+            this.getChildren().forEach(child => {
+                if (filesOnly && child.isSummary()) {
+                    return;
+                }
+                count += 1;
+                summary.merge(child.getCoverageSummary(filesOnly));
+            });
+            if (count === 0 && filesOnly) {
+                summary = null;
+            }
+        }
+        this[cacheProp] = summary;
+        return summary;
+    }
+}
+
+class ReportTree extends BaseTree {
+    constructor(root, childPrefix) {
+        super(root);
+
+        const maybePrefix = node => {
+            if (childPrefix && !node.isRoot()) {
+                node.path.unshift(childPrefix);
+            }
+        };
+        this.visit({
+            onDetail: maybePrefix,
+            onSummary(node) {
+                maybePrefix(node);
+                node.children.sort((a, b) => {
+                    const astr = a.path.toString();
+                    const bstr = b.path.toString();
+                    return astr < bstr
+                        ? -1
+                        : astr > bstr
+                        ? 1
+                        : /* istanbul ignore next */ 0;
+                });
+            }
+        });
+    }
+}
+
+function findCommonParent(paths) {
+    return paths.reduce(
+        (common, path) => common.commonPrefixPath(path),
+        paths[0] || new Path([])
+    );
+}
+
+function findOrCreateParent(parentPath, nodeMap, created = () => {}) {
+    let parent = nodeMap[parentPath.toString()];
+
+    if (!parent) {
+        parent = new ReportNode(parentPath);
+        nodeMap[parentPath.toString()] = parent;
+        created(parentPath, parent);
+    }
+
+    return parent;
+}
+
+function toDirParents(list) {
+    const nodeMap = Object.create(null);
+    list.forEach(o => {
+        const parent = findOrCreateParent(o.path.parent(), nodeMap);
+        parent.addChild(new ReportNode(o.path, o.fileCoverage));
+    });
+
+    return Object.values(nodeMap);
+}
+
+function addAllPaths(topPaths, nodeMap, path, node) {
+    const parent = findOrCreateParent(
+        path.parent(),
+        nodeMap,
+        (parentPath, parent) => {
+            if (parentPath.hasParent()) {
+                addAllPaths(topPaths, nodeMap, parentPath, parent);
+            } else {
+                topPaths.push(parent);
+            }
+        }
+    );
+
+    parent.addChild(node);
+}
+
+function foldIntoOneDir(node, parent) {
+    const { children } = node;
+    if (children.length === 1 && !children[0].fileCoverage) {
+        children[0].parent = parent;
+        return foldIntoOneDir(children[0], parent);
+    }
+    node.children = children.map(child => foldIntoOneDir(child, node));
+    return node;
+}
+
+function pkgSummaryPrefix(dirParents, commonParent) {
+    if (!dirParents.some(dp => dp.path.length === 0)) {
+        return;
+    }
+
+    if (commonParent.length === 0) {
+        return 'root';
+    }
+
+    return commonParent.name();
+}
+
+class SummarizerFactory {
+    constructor(coverageMap, defaultSummarizer = 'pkg') {
+        this._coverageMap = coverageMap;
+        this._defaultSummarizer = defaultSummarizer;
+        this._initialList = coverageMap.files().map(filePath => ({
+            filePath,
+            path: new Path(filePath),
+            fileCoverage: coverageMap.fileCoverageFor(filePath)
+        }));
+        this._commonParent = findCommonParent(
+            this._initialList.map(o => o.path.parent())
+        );
+        if (this._commonParent.length > 0) {
+            this._initialList.forEach(o => {
+                o.path.splice(0, this._commonParent.length);
+            });
+        }
+    }
+
+    get defaultSummarizer() {
+        return this[this._defaultSummarizer];
+    }
+
+    get flat() {
+        if (!this._flat) {
+            this._flat = new ReportTree(
+                ReportNode.createRoot(
+                    this._initialList.map(
+                        node => new ReportNode(node.path, node.fileCoverage)
+                    )
+                )
+            );
+        }
+
+        return this._flat;
+    }
+
+    _createPkg() {
+        const dirParents = toDirParents(this._initialList);
+        if (dirParents.length === 1) {
+            return new ReportTree(dirParents[0]);
+        }
+
+        return new ReportTree(
+            ReportNode.createRoot(dirParents),
+            pkgSummaryPrefix(dirParents, this._commonParent)
+        );
+    }
+
+    get pkg() {
+        if (!this._pkg) {
+            this._pkg = this._createPkg();
+        }
+
+        return this._pkg;
+    }
+
+    _createNested() {
+        const nodeMap = Object.create(null);
+        const topPaths = [];
+        this._initialList.forEach(o => {
+            const node = new ReportNode(o.path, o.fileCoverage);
+            addAllPaths(topPaths, nodeMap, o.path, node);
+        });
+
+        const topNodes = topPaths.map(node => foldIntoOneDir(node));
+        if (topNodes.length === 1) {
+            return new ReportTree(topNodes[0]);
+        }
+
+        return new ReportTree(ReportNode.createRoot(topNodes));
+    }
+
+    get nested() {
+        if (!this._nested) {
+            this._nested = this._createNested();
+        }
+
+        return this._nested;
+    }
+}
+
+module.exports = SummarizerFactory;