[complete-doc]: add support for constuctor doc (#4861)

* [complete-doc]: add support for constuctor doc

* [complete-docs]: add test for protected constructor, fix class name

src/rules/completed-docs/constructorExclusion.ts

@@ -0,0 +1,53 @@
+/**
+ * @license
+ * Copyright 2019 Palantir Technologies, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { hasModifier } from "tsutils";
+import * as ts from "typescript";
+
+import {
+    ALL,
+    Privacy,
+    PRIVACY_PRIVATE,
+    PRIVACY_PROTECTED,
+    PRIVACY_PUBLIC,
+} from "../completedDocsRule";
+
+import { Exclusion } from "./exclusion";
+
+export interface IConstructorExclusionDescriptor {
+    privacies?: Privacy[];
+}
+
+export class ConstructorExclusion extends Exclusion<IConstructorExclusionDescriptor> {
+    public readonly privacies: Set<Privacy> = this.createSet(this.descriptor.privacies);
+
+    public excludes(node: ts.Node) {
+        if (this.privacies.has(ALL)) {
+            return false;
+        }
+
+        if (hasModifier(node.modifiers, ts.SyntaxKind.PrivateKeyword)) {
+            return !this.privacies.has(PRIVACY_PRIVATE);
+        }
+
+        if (hasModifier(node.modifiers, ts.SyntaxKind.ProtectedKeyword)) {
+            return !this.privacies.has(PRIVACY_PROTECTED);
+        }
+
+        return !this.privacies.has(PRIVACY_PUBLIC);
+    }
+}

src/rules/completed-docs/exclusions.ts

@@ -19,6 +19,7 @@ import { DESCRIPTOR_OVERLOADS, DocType } from "../completedDocsRule";
 
 import { BlockExclusion, IBlockExclusionDescriptor } from "./blockExclusion";
 import { ClassExclusion, IClassExclusionDescriptor } from "./classExclusion";
+import { ConstructorExclusion, IConstructorExclusionDescriptor } from "./constructorExclusion";
 import { Exclusion } from "./exclusion";
 import { IInputExclusionDescriptors, InputExclusionDescriptor } from "./exclusionDescriptors";
 import { ITagExclusionDescriptor, TagExclusion } from "./tagExclusion";
@@ -64,10 +65,18 @@ const createRequirementsForDocType = (docType: DocType, descriptor: InputExclusi
         overloadsSeparateDocs = !!(descriptor as any)[DESCRIPTOR_OVERLOADS];
     }
 
-    if (docType === "methods" || docType === "properties") {
-        requirements.push(new ClassExclusion(descriptor as IClassExclusionDescriptor));
-    } else {
-        requirements.push(new BlockExclusion(descriptor as IBlockExclusionDescriptor));
+    switch (docType) {
+        case "constructors":
+            requirements.push(
+                new ConstructorExclusion(descriptor as IConstructorExclusionDescriptor),
+            );
+            break;
+        case "methods":
+        case "properties":
+            requirements.push(new ClassExclusion(descriptor as IClassExclusionDescriptor));
+            break;
+        default:
+            requirements.push(new BlockExclusion(descriptor as IBlockExclusionDescriptor));
     }
 
     if ((descriptor as ITagExclusionDescriptor).tags !== undefined) {

src/rules/completedDocsRule.ts

@@ -26,6 +26,7 @@ import { constructExclusionsMap, ExclusionsMap } from "./completed-docs/exclusio
 export const ALL = "all";
 
 export const ARGUMENT_CLASSES = "classes";
+export const ARGUMENT_CONSTRUCTORS = "constructors";
 export const ARGUMENT_ENUMS = "enums";
 export const ARGUMENT_ENUM_MEMBERS = "enum-members";
 export const ARGUMENT_FUNCTIONS = "functions";
@@ -60,6 +61,7 @@ export type All = typeof ALL;
 export type DocType =
     | All
     | typeof ARGUMENT_CLASSES
+    | typeof ARGUMENT_CONSTRUCTORS
     | typeof ARGUMENT_ENUMS
     | typeof ARGUMENT_ENUM_MEMBERS
     | typeof ARGUMENT_FUNCTIONS
@@ -160,6 +162,35 @@ export class Rule extends Lint.Rules.AbstractRule {
         type: "object",
     };
 
+    public static ARGUMENT_DESCRIPTOR_CONSTRUCTOR = {
+        properties: {
+            [DESCRIPTOR_TAGS]: {
+                properties: {
+                    [TAGS_FOR_CONTENT]: {
+                        items: {
+                            type: "string",
+                        },
+                        type: "object",
+                    },
+                    [TAGS_FOR_EXISTENCE]: {
+                        items: {
+                            type: "string",
+                        },
+                        type: "array",
+                    },
+                },
+            },
+            [DESCRIPTOR_PRIVACIES]: {
+                enum: [ALL, PRIVACY_PRIVATE, PRIVACY_PROTECTED, PRIVACY_PUBLIC],
+                type: "string",
+            },
+            [DESCRIPTOR_OVERLOADS]: {
+                type: "boolean",
+            },
+        },
+        type: "object",
+    };
+
     public static ARGUMENT_DESCRIPTOR_FUNCTION = {
         properties: {
             ...Rule.ARGUMENT_DESCRIPTOR_BLOCK.properties,
@@ -214,6 +245,7 @@ export class Rule extends Lint.Rules.AbstractRule {
             Types that may be enabled are:
 
             * \`"${ARGUMENT_CLASSES}"\`
+            * \`"${ARGUMENT_CONSTRUCTORS}"\`
             * \`"${ARGUMENT_ENUMS}"\`
             * \`"${ARGUMENT_ENUM_MEMBERS}"\`
             * \`"${ARGUMENT_FUNCTIONS}"\`
@@ -245,6 +277,7 @@ export class Rule extends Lint.Rules.AbstractRule {
                         type: "object",
                         properties: {
                             [ARGUMENT_CLASSES]: Rule.ARGUMENT_DESCRIPTOR_BLOCK,
+                            [ARGUMENT_CONSTRUCTORS]: Rule.ARGUMENT_DESCRIPTOR_CONSTRUCTOR,
                             [ARGUMENT_ENUMS]: Rule.ARGUMENT_DESCRIPTOR_BLOCK,
                             [ARGUMENT_ENUM_MEMBERS]: Rule.ARGUMENT_DESCRIPTOR_BLOCK,
                             [ARGUMENT_FUNCTIONS]: Rule.ARGUMENT_DESCRIPTOR_FUNCTION,
@@ -326,6 +359,10 @@ function walk(context: Lint.WalkContext<ExclusionsMap>) {
                 checkNode(node as ts.ClassDeclaration, ARGUMENT_CLASSES);
                 break;
 
+            case ts.SyntaxKind.Constructor:
+                checkNode(node as ts.ClassDeclaration, ARGUMENT_CONSTRUCTORS);
+                break;
+
             case ts.SyntaxKind.EnumDeclaration:
                 checkNode(node as ts.EnumDeclaration, ARGUMENT_ENUMS);
                 for (const member of (node as ts.EnumDeclaration).members) {
@@ -419,9 +456,12 @@ function walk(context: Lint.WalkContext<ExclusionsMap>) {
         docType: DocType,
         requirementNode: ts.Node,
     ): boolean {
-        const { name } = node;
-        if (name === undefined) {
-            return true;
+        if (docType !== ARGUMENT_CONSTRUCTORS) {
+            const { name } = node;
+
+            if (name === undefined) {
+                return true;
+            }
         }
 
         const exclusions = context.options.get(docType);
@@ -499,6 +539,14 @@ function walk(context: Lint.WalkContext<ExclusionsMap>) {
             );
         }
 
+        if (tsutils.isConstructorDeclaration(node)) {
+            const {
+                parent: { members },
+            } = node;
+
+            return members.filter(child => tsutils.isConstructorDeclaration(child));
+        }
+
         if (
             tsutils.isMethodDeclaration(node) &&
             tsutils.isIdentifier(node.name) &&

test/rules/completed-docs/constructors/overloads/default/test.ts.lint

@@ -0,0 +1,31 @@
+class Foo {
+    constructor(i: number);
+
+    /**
+     * Exists in one place
+     */
+    constructor(o: any) {}
+}
+
+class FooPublic {
+    public constructor(i: number);
+
+    /**
+     * Exists in one place
+     */
+    public constructor(o: any) {}
+}
+
+class FooPrivate {
+    private constructor(i: number);
+
+    /**
+     * Exists in one place
+     */
+    private constructor(o: any) {}
+}
+
+class FooProtected {
+    protected constructor(i: number);
+    protected constructor(o: any) {}
+}

test/rules/completed-docs/constructors/overloads/default/tslint.json

@@ -0,0 +1,9 @@
+{
+  "rules": {
+    "completed-docs": [true, {
+        "constructors": {
+            "privacies": ["public", "private"]
+        }
+    }]
+  }
+}

test/rules/completed-docs/constructors/overloads/true/test.ts.lint

@@ -0,0 +1,40 @@
+class Foo {
+    constructor(i: number);
+    ~~~~~~~~~~~~~~~~~~~~~~~ [default]
+    /**
+     * Exists in one place
+     */
+    constructor(o: any) {}
+}
+
+class FooPublic {
+    public constructor(i: number);
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [public]
+    /**
+     * Exists in one place
+     */
+    public constructor(o: any) {}
+}
+
+class FooPrivate {
+    private constructor(i: number);
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [private]
+    /**
+     * Exists in one place
+     */
+    private constructor(o: any) {}
+}
+
+class FooProtected {
+    protected constructor(i: number);
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [protected]
+    /**
+     * Exists in one place
+     */
+    protected constructor(o: any) {}
+}
+
+[default]: Documentation must exist for constructors.
+[public]: Documentation must exist for public constructors.
+[private]: Documentation must exist for private constructors.
+[protected]: Documentation must exist for protected constructors.

test/rules/completed-docs/constructors/overloads/true/tslint.json

@@ -0,0 +1,10 @@
+{
+  "rules": {
+    "completed-docs": [true, {
+        "constructors": {
+            "overloads": true,
+            "privacies": ["public", "protected", "private"]
+        }
+    }]
+  }
+}

test/rules/completed-docs/constructors/privacies/test.ts.lint

@@ -0,0 +1,99 @@
+class Foo {
+    constructor() {}
+    ~~~~~~~~~~~~~~~~ [default]
+}
+
+class Foo {
+    public constructor() {}
+    ~~~~~~~~~~~~~~~~~~~~~~~ [public]
+}
+
+class Foo {
+    private constructor() {}
+    ~~~~~~~~~~~~~~~~~~~~~~~~ [private]
+}
+
+class Foo {
+    protected constructor() {}
+}
+
+class Foo {
+    /** ... */
+    constructor() {}
+}
+
+class Foo {
+    /** content */
+    constructor() {}
+}
+
+class Foo {
+    /** */
+    constructor() {}
+    ~~~~~~~~~~~~~~~~ [default]
+}
+
+class Foo {
+    /** ... */
+    public constructor() {}
+}
+
+class Foo {
+    /** content */
+    public constructor() {}
+}
+
+class Foo {
+    /** */
+    public constructor() {}
+    ~~~~~~~~~~~~~~~~~~~~~~~ [public]
+}
+
+class Foo {
+    /** ... */
+    private constructor() {}
+}
+
+class Foo {
+    /** content */
+    private constructor() {}
+}
+
+class Foo {
+    /** */
+    private constructor() {}
+    ~~~~~~~~~~~~~~~~~~~~~~~~ [private]
+}
+
+
+class Foo {
+    /**
+     * ...
+     */
+    constructor() {}
+}
+
+class Foo {
+    /**
+     * ...
+     */
+    public constructor() {}
+}
+
+class Foo {
+    /**
+     * ...
+     */
+    private constructor() {}
+}
+
+class Foo {
+    /**
+     * ...
+     */
+    protected constructor() {}
+}
+
+[default]: Documentation must exist for constructors.
+[public]: Documentation must exist for public constructors.
+[private]: Documentation must exist for private constructors.

test/rules/completed-docs/constructors/privacies/tslint.json

@@ -0,0 +1,9 @@
+{
+  "rules": {
+    "completed-docs": [true, {
+        "constructors": {
+            "privacies": ["public", "private"]
+        }
+    }]
+  }
+}