feat(ls): add initial support for OpenAPI 2.0

packages/apidom-ls/package.json

@@ -98,6 +98,7 @@
     "@swagger-api/apidom-json-pointer": "^0.84.0",
     "@swagger-api/apidom-ns-api-design-systems": "^0.84.0",
     "@swagger-api/apidom-ns-asyncapi-2": "^0.84.0",
+    "@swagger-api/apidom-ns-openapi-2": "^0.84.0",
     "@swagger-api/apidom-ns-openapi-3-0": "^0.84.0",
     "@swagger-api/apidom-ns-openapi-3-1": "^0.84.0",
     "@swagger-api/apidom-parser": "^0.84.0",
@@ -106,6 +107,8 @@
     "@swagger-api/apidom-parser-adapter-asyncapi-json-2": "^0.84.0",
     "@swagger-api/apidom-parser-adapter-asyncapi-yaml-2": "^0.84.0",
     "@swagger-api/apidom-parser-adapter-json": "^0.84.0",
+    "@swagger-api/apidom-parser-adapter-openapi-json-2": "^0.84.0",
+    "@swagger-api/apidom-parser-adapter-openapi-yaml-2": "^0.84.0",
     "@swagger-api/apidom-parser-adapter-openapi-json-3-0": "^0.84.0",
     "@swagger-api/apidom-parser-adapter-openapi-json-3-1": "^0.84.0",
     "@swagger-api/apidom-parser-adapter-openapi-yaml-3-0": "^0.84.0",

packages/apidom-ls/src/config/config.ts

@@ -1,6 +1,6 @@
-import configAsyncapi from './asyncapi/config';
-import configOpenapi from './openapi/config';
-import configAds from './ads/config';
+import configAsyncAPI from './asyncapi/config';
+import configOpenAPI from './openapi/config';
+import configADS from './ads/config';
 import { Metadata } from '../apidom-language-types';
 import symbols from './symbols';
 import tokens from './tokens';
@@ -9,9 +9,9 @@ import tokens from './tokens';
 export function config(): Metadata {
   return {
     metadataMaps: {
-      openapi: configOpenapi,
-      asyncapi: configAsyncapi,
-      ads: configAds,
+      openapi: configOpenAPI,
+      asyncapi: configAsyncAPI,
+      ads: configADS,
     },
     linterFunctions: {},
     symbols,

packages/apidom-ls/src/config/openapi/config.ts

@@ -30,6 +30,7 @@ import securityRequirementMeta from './security-requirement/meta';
 import securitySchemeMeta from './security-scheme/meta';
 import serverMeta from './server/meta';
 import serverVariableMeta from './server-variable/meta';
+import swaggerMeta from './swagger/meta';
 import tagMeta from './tag/meta';
 import xmlMeta from './xml/meta';
 import schemaMeta from '../common/schema/meta';
@@ -78,6 +79,7 @@ export default {
   securityScheme: securitySchemeMeta,
   server: serverMeta,
   serverVariable: serverVariableMeta,
+  swagger: swaggerMeta,
   tag: tagMeta,
   xml: xmlMeta,
   schema: schemaMeta,

packages/apidom-ls/src/config/openapi/swagger/completion.ts

@@ -0,0 +1,5 @@
+import { ApidomCompletionItem } from '../../../apidom-language-types';
+
+const completion: ApidomCompletionItem[] = [];
+
+export default completion;

packages/apidom-ls/src/config/openapi/swagger/documentation.ts

@@ -0,0 +1,5 @@
+import { DocumentationMeta } from '../../../apidom-language-types';
+
+const documentation: DocumentationMeta[] = [];
+
+export default documentation;

packages/apidom-ls/src/config/openapi/swagger/lint/allowed-fields.ts

@@ -0,0 +1,36 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+
+const allowedFieldsLint: LinterMeta = {
+  code: ApilintCodes.NOT_ALLOWED_FIELDS,
+  source: 'apilint',
+  message: 'Object includes not allowed fields',
+  severity: DiagnosticSeverity.Error,
+  linterFunction: 'allowedFields',
+  linterParams: [
+    [
+      'swagger',
+      'info',
+      'host',
+      'basePath',
+      'schemes',
+      'consumes',
+      'produces',
+      'paths',
+      'definitions',
+      'parameters',
+      'responses',
+      'securityDefinitions',
+      'security',
+      'tags',
+      'externalDocs',
+    ],
+    'x-',
+  ],
+  marker: 'key',
+  targetSpecs: [{ namespace: 'openapi', version: '2.0' }],
+};
+
+export default allowedFieldsLint;

packages/apidom-ls/src/config/openapi/swagger/lint/index.ts

@@ -0,0 +1,5 @@
+import allowedFieldsLint from './allowed-fields';
+
+const lints = [allowedFieldsLint];
+
+export default lints;

packages/apidom-ls/src/config/openapi/swagger/meta.ts

@@ -0,0 +1,12 @@
+import lint from './lint';
+import completion from './completion';
+import documentation from './documentation';
+import { FormatMeta } from '../../../apidom-language-types';
+
+const meta: FormatMeta = {
+  lint,
+  completion,
+  documentation,
+};
+
+export default meta;

packages/apidom-ls/src/config/symbols.ts

@@ -34,4 +34,9 @@ export default [
   'identifier',
   'license',
   'message',
+  'security',
+  'parametersDefinitions',
+  'responsesDefinitions',
+  'parametersDefinitions',
+  'definitions',
 ];

packages/apidom-ls/src/config/tokens.ts

@@ -75,4 +75,9 @@ export default [
   'messageTraits',
   'operationTrait',
   'operationTraits',
+  'security',
+  'parametersDefinitions',
+  'responsesDefinitions',
+  'parametersDefinitions',
+  'definitions',
 ];

packages/apidom-ls/src/parser-factory.ts

@@ -1,3 +1,5 @@
+import * as openapi2AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-2';
+import * as openapi2AdapterYaml from '@swagger-api/apidom-parser-adapter-openapi-yaml-2';
 import * as openapi3_0AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-3-0';
 import * as openapi3_0AdapterYaml from '@swagger-api/apidom-parser-adapter-openapi-yaml-3-0';
 import * as openapi3_1AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-3-1';
@@ -9,6 +11,7 @@ import * as adsAdapterYaml from '@swagger-api/apidom-parser-adapter-api-design-s
 import * as adapterJson from '@swagger-api/apidom-parser-adapter-json';
 import * as adapterYaml from '@swagger-api/apidom-parser-adapter-yaml-1-2';
 import { refractorPluginReplaceEmptyElement as refractorPluginReplaceEmptyElementAsyncAPI2 } from '@swagger-api/apidom-ns-asyncapi-2';
+import { refractorPluginReplaceEmptyElement as refractorPluginReplaceEmptyElementOpenAPI2 } from '@swagger-api/apidom-ns-openapi-2';
 import { refractorPluginReplaceEmptyElement as refractorPluginReplaceEmptyElementOpenAPI3_0 } from '@swagger-api/apidom-ns-openapi-3-0';
 import { refractorPluginReplaceEmptyElement as refractorPluginReplaceEmptyElementOpenAPI3_1 } from '@swagger-api/apidom-ns-openapi-3-1';
 import { TextDocument } from 'vscode-languageserver-textdocument';
@@ -45,6 +48,24 @@ export async function parse(
       options.refractorOpts = { plugins: [refractorPluginReplaceEmptyElementAsyncAPI2()] };
     }
     result = await asyncapi2AdapterYaml.parse(text, options);
+  } else if (
+    contentLanguage.namespace === 'openapi' &&
+    contentLanguage.version === '2.0' &&
+    contentLanguage.format === 'JSON'
+  ) {
+    result = await openapi2AdapterJson.parse(text, { sourceMap: true });
+  } else if (
+    contentLanguage.namespace === 'openapi' &&
+    contentLanguage.version === '2.0' &&
+    contentLanguage.format === 'YAML'
+  ) {
+    const options: Record<string, unknown> = {
+      sourceMap: true,
+    };
+    if (registerPlugins) {
+      options.refractorOpts = { plugins: [refractorPluginReplaceEmptyElementOpenAPI2()] };
+    }
+    result = await openapi2AdapterYaml.parse(text, options);
   } else if (
     contentLanguage.namespace === 'openapi' &&
     contentLanguage.version?.startsWith('3.0') &&

packages/apidom-ls/src/services/completion/completion-service.ts

@@ -325,6 +325,17 @@ export class DefaultCompletionService implements CompletionService {
       oasItem.insertTextFormat = 2;
       oasItem.insertTextMode = 2;
       completionList.items.push(oasItem);
+      const swaggerItem = CompletionItem.create('swagger');
+      swaggerItem.insertText = `swagger: '2.0'${isEmpty ? '$1' : '\n$1'}`;
+      swaggerItem.documentation = {
+        kind: 'markdown',
+        value:
+          '**REQUIRED**. Specifies the Swagger Specification version being used. It can be used by the Swagger UI and other clients to interpret the API listing. The value MUST be "2.0".',
+      };
+      swaggerItem.kind = CompletionItemKind.Keyword;
+      swaggerItem.insertTextFormat = 2;
+      swaggerItem.insertTextMode = 2;
+      completionList.items.push(swaggerItem);
       trace('doCompletion - no version', `completionList: ${JSON.stringify(completionList)}`);
     }
 

packages/apidom-ls/src/services/definition/definition-service.ts

@@ -79,9 +79,7 @@ export class DefaultDefinitionService implements DefinitionService {
             textDocument.getText(),
             this.settings?.defaultContentLanguage,
           );
-          // TODO atm only support and default to OAS 3.1
-          const specVersion =
-            contentLanguage.namespace === 'openapi' ? '3.1.0' : getSpecVersion(api);
+          const specVersion = getSpecVersion(api);
 
           const format = contentLanguage.format ? contentLanguage.format.toLowerCase() : 'json';
           const mediaTypePrefix =

packages/apidom-ls/src/services/hover/hover-service.ts

@@ -183,9 +183,7 @@ export class DefaultHoverService implements HoverService {
                 textDocument.getText(),
                 this.settings?.defaultContentLanguage,
               );
-              // TODO atm only support and default to OAS 3.1
-              const nonStrictSpecVersion =
-                contentLanguage.namespace === 'openapi' ? '3.1.0' : getSpecVersion(api);
+              const nonStrictSpecVersion = getSpecVersion(api);
 
               const format = contentLanguage.format ? contentLanguage.format.toLowerCase() : 'json';
               const mediaTypePrefix =

packages/apidom-ls/src/utils/utils.ts

@@ -1,3 +1,5 @@
+import * as openapi2AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-2';
+import * as openapi2AdapterYaml from '@swagger-api/apidom-parser-adapter-openapi-yaml-2';
 import * as openapi3_0AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-3-0';
 import * as openapi3_0AdapterYaml from '@swagger-api/apidom-parser-adapter-openapi-yaml-3-0';
 import * as openapi3_1AdapterJson from '@swagger-api/apidom-parser-adapter-openapi-json-3-1';
@@ -807,6 +809,31 @@ export async function findNamespace(
       mediaType: `application/vnd.aai.asyncapi+yaml;version=${version}`,
     };
   }
+  if (await openapi2AdapterJson.detect(text)) {
+    const versionMatch = text.match(openapi2AdapterJson.detectionRegExp);
+    const version = versionMatch?.groups?.version_json ? versionMatch?.groups?.version_json : '2.0';
+
+    return {
+      namespace: 'openapi',
+      version,
+      format: 'JSON',
+      mediaType: `application/vnd.oai.openapi+json;version=${version}`,
+    };
+  }
+  if (await openapi2AdapterYaml.detect(text)) {
+    const versionMatch = text.match(openapi2AdapterYaml.detectionRegExp);
+    const version = versionMatch?.groups?.version_yaml
+      ? versionMatch?.groups?.version_yaml
+      : versionMatch?.groups?.version_json
+        ? versionMatch?.groups?.version_json
+        : '2.0';
+    return {
+      namespace: 'openapi',
+      version,
+      format: 'YAML',
+      mediaType: `application/vnd.oai.openapi+yaml;version=${version}`,
+    };
+  }
   if (await openapi3_0AdapterJson.detect(text)) {
     const versionMatch = text.match(openapi3_0AdapterJson.detectionRegExp);
     const version = versionMatch?.groups?.version_json

packages/apidom-ls/test/fixtures/sample-api-openapi-yaml-2-0.yaml

@@ -0,0 +1,2 @@
+swagger: "2.0"
+unknown: {}

packages/apidom-ls/test/validate.ts

@@ -3307,4 +3307,41 @@ describe('apidom-ls-validate', function () {
 
     languageService.terminate();
   });
+
+  it('oas 2.0 / yaml', async function () {
+    const validationContext: ValidationContext = {
+      comments: DiagnosticSeverity.Error,
+      maxNumberOfProblems: 100,
+      relatedInformation: false,
+    };
+
+    const spec = fs
+      .readFileSync(path.join(__dirname, 'fixtures', 'sample-api-openapi-yaml-2-0.yaml'))
+      .toString();
+    const doc: TextDocument = TextDocument.create('foo://bar/openapi-2-0.yaml', 'yaml', 0, spec);
+    const languageService: LanguageService = getLanguageService(contextNoSchema);
+    const result = await languageService.doValidation(doc, validationContext);
+    const expected: Diagnostic[] = [
+      {
+        code: 15000,
+        message: 'Object includes not allowed fields',
+        range: {
+          end: {
+            character: 5,
+            line: 0,
+          },
+          start: {
+            character: 0,
+            line: 0,
+          },
+        },
+        severity: 1,
+        source: 'apilint',
+      },
+    ];
+
+    assert.deepEqual(result, expected as Diagnostic[]);
+
+    languageService.terminate();
+  });
 });