feat(analysis) scalar change analysis (#704)

* feat(analysis) scalar change analysis

Signed-off-by: Dan Selman <[email protected]>

Author: dselman

packages/concerto-analysis/src/compare-config.ts

@@ -61,6 +61,10 @@ export const defaultCompareConfig: CompareConfig = {
         'property-validator-removed': CompareResult.PATCH,
         'property-validator-changed': CompareResult.MAJOR,
         'map-key-type-changed': CompareResult.MAJOR,
-        'map-value-type-changed': CompareResult.MAJOR
+        'map-value-type-changed': CompareResult.MAJOR,
+        'scalar-extends-changed': CompareResult.MAJOR,
+        'scalar-validator-added' : CompareResult.MAJOR,
+        'scalar-validator-removed' : CompareResult.PATCH,
+        'scalar-validator-changed' : CompareResult.MAJOR,
     }
 };

packages/concerto-analysis/src/compare-utils.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { ClassDeclaration, EnumValueDeclaration, Field, MapDeclaration, NumberValidator, Property, RelationshipDeclaration, StringValidator, Validator } from '@accordproject/concerto-core';
+import { ClassDeclaration, EnumValueDeclaration, Field, MapDeclaration, ScalarDeclaration, NumberValidator, Property, RelationshipDeclaration, StringValidator, Validator } from '@accordproject/concerto-core';
 import Declaration from '@accordproject/concerto-core/types/lib/introspect/declaration';
 
 export function getDeclarationType(declaration: Declaration) {
@@ -34,6 +34,11 @@ export function getDeclarationType(declaration: Declaration) {
         }
     } else if (declaration instanceof MapDeclaration) {
         return 'map';
+    } else if (declaration instanceof ScalarDeclaration) {
+        return 'scalar';
+    }
+    else {
+        throw new Error(`unknown declaration type "${declaration}"`);
     }
 }
 

packages/concerto-analysis/src/compare.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { ClassDeclaration, MapDeclaration, ModelFile, Property } from '@accordproject/concerto-core';
+import { ClassDeclaration, MapDeclaration, ModelFile, Property, ScalarDeclaration } from '@accordproject/concerto-core';
 import { CompareConfig, CompareResult, defaultCompareConfig } from './compare-config';
 import { CompareFinding } from './compare-message';
 import { CompareResults } from './compare-results';
@@ -69,14 +69,26 @@ export class Compare {
         return b.filter(bItem => !a.some(aItem => bItem.getName() === aItem.getName()));
     }
 
+    private getAddedScalarDeclarations(a: ScalarDeclaration[], b: ScalarDeclaration[]): ScalarDeclaration[] {
+        return b.filter(bItem => !a.some(aItem => bItem.getName() === aItem.getName()));
+    }
+
     private getMatchingMapDeclarations(a: MapDeclaration[], b: MapDeclaration[]): [a: MapDeclaration, b: MapDeclaration][] {
         return a.map(aItem => [aItem, b.find(bItem => aItem.getName() === bItem.getName())]).filter(([, b]) => !!b) as [MapDeclaration, MapDeclaration][];
     }
 
+    private getMatchingScalarDeclarations(a: ScalarDeclaration[], b: ScalarDeclaration[]): [a: ScalarDeclaration, b: ScalarDeclaration][] {
+        return a.map(aItem => [aItem, b.find(bItem => aItem.getName() === bItem.getName())]).filter(([, b]) => !!b) as [ScalarDeclaration, ScalarDeclaration][];
+    }
+
     private getRemovedMapDeclarations(a: MapDeclaration[], b: MapDeclaration[]): MapDeclaration[] {
         return a.filter(aItem => !b.some(bItem => aItem.getName() === bItem.getName()));
     }
 
+    private getRemovedScalarDeclarations(a: ScalarDeclaration[], b: ScalarDeclaration[]): ScalarDeclaration[] {
+        return a.filter(aItem => !b.some(bItem => aItem.getName() === bItem.getName()));
+    }
+
     private getAddedClassDeclarations(a: ClassDeclaration[], b: ClassDeclaration[]): ClassDeclaration[] {
         return b.filter(bItem => !a.some(aItem => bItem.getName() === aItem.getName()));
     }
@@ -98,12 +110,26 @@ export class Compare {
         removed.forEach(a => comparers.forEach(comparer => comparer.compareMapDeclaration?.(a, undefined)));
     }
 
+    private compareScalarDeclarations(comparers: Comparer[], a: ScalarDeclaration[], b: ScalarDeclaration[]) {
+        const added = this.getAddedScalarDeclarations(a, b);
+        const matching = this.getMatchingScalarDeclarations(a, b);
+        const removed = this.getRemovedScalarDeclarations(a, b);
+        added.forEach(b => comparers.forEach(comparer => comparer.compareScalarDeclaration?.(undefined, b)));
+        matching.forEach(([a, b]) => comparers.forEach(comparer => comparer.compareScalarDeclaration?.(a, b)));
+        removed.forEach(a => comparers.forEach(comparer => comparer.compareScalarDeclaration?.(a, undefined)));
+    }
+
+
     private compareClassDeclaration(comparers: Comparer[], a: ClassDeclaration, b: ClassDeclaration) {
         comparers.forEach(comparer => comparer.compareClassDeclaration?.(a, b));
         // MapDeclarations do not contain properties, nothing to compare.
         if(a instanceof MapDeclaration || b instanceof MapDeclaration) {
             return;
         }
+        // ScalarDeclarations do not contain properties, nothing to compare.
+        if(a instanceof ScalarDeclaration || b instanceof ScalarDeclaration) {
+            return;
+        }
         this.compareProperties(comparers, a.getOwnProperties(), b.getOwnProperties());
     }
 
@@ -120,6 +146,7 @@ export class Compare {
         comparers.forEach(comparer => comparer.compareModelFiles?.(a, b));
         this.compareClassDeclarations(comparers, a.getAllDeclarations(), b.getAllDeclarations());
         this.compareMapDeclarations(comparers, a.getMapDeclarations(), b.getMapDeclarations());
+        this.compareScalarDeclarations(comparers, a.getScalarDeclarations(), b.getScalarDeclarations());
     }
 
     private buildResults(findings: CompareFinding[]) {

packages/concerto-analysis/src/comparer.ts

@@ -12,7 +12,7 @@
  * limitations under the License.
  */
 
-import { ClassDeclaration, MapDeclaration, ModelFile, Property } from '@accordproject/concerto-core';
+import { ClassDeclaration, MapDeclaration, ModelFile, Property, ScalarDeclaration } from '@accordproject/concerto-core';
 import { CompareContext } from './compare-context';
 
 /**
@@ -42,6 +42,15 @@ export type Comparer = {
      */
     compareMapDeclaration?: (a: MapDeclaration | undefined, b: MapDeclaration | undefined) => void;
 
+    /**
+     * Called to compare two scalar declarations. If a is undefined, but b is defined, then this scalar declaration was
+     * created in the second model. If a is defined, but b is undefined, then this map declaration was removed in the
+     * second model.
+     * @param a The first scalar declaration for comparision, or undefined if it is undefined in the first model.
+     * @param b The second scalar declaration for comparision, or undefined if it is undefined in the second model.
+     */
+    compareScalarDeclaration?: (a: ScalarDeclaration | undefined, b: ScalarDeclaration | undefined) => void;
+
     /**
      * Called to compare two properties. If a is undefined, but b is definecd, then this property was
      * created in the second model. If a is defined, but b is undefined, then this property was removed in the

packages/concerto-analysis/src/comparers/index.ts

@@ -16,10 +16,12 @@ import { classDeclarationComparerFactories } from './class-declarations';
 import { modelFileComparerFactories } from './model-files';
 import { propertyComparerFactories } from './properties';
 import { mapDeclarationComparerFactories } from './map-declarations';
+import { scalarDeclarationComparerFactories } from './scalar-declarations';
 
 export const comparerFactories = [
     ...classDeclarationComparerFactories,
     ...propertyComparerFactories,
     ...modelFileComparerFactories,
-    ...mapDeclarationComparerFactories
+    ...mapDeclarationComparerFactories,
+    ...scalarDeclarationComparerFactories
 ];

packages/concerto-analysis/src/comparers/scalar-declarations.ts

@@ -0,0 +1,72 @@
+/*
+ * 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 { ComparerFactory } from '../comparer';
+import { getValidatorType } from '../compare-utils';
+
+const scalarDeclarationExtendsChanged: ComparerFactory = (context) => ({
+    compareScalarDeclaration: (a, b) => {
+
+        if (!a || !b) {
+            return;
+        }
+
+        if(a.getType() !== b.getType()) {
+            context.report({
+                key: 'scalar-extends-changed',
+                message: `The scalar extends was changed from "${a.getType()}" to "${b.getType()}"`,
+                element: b.getName()
+            });
+        }
+    },
+});
+
+const scalarValidatorChanged: ComparerFactory = (context) => ({
+    compareScalarDeclaration: (a, b) => {
+        if (!a || !b) {
+            return;
+        }
+        const aValidator = a.getValidator();
+        const bValidator = b.getValidator();
+        if (!aValidator && !bValidator) {
+            return;
+        } else if (!aValidator && bValidator) {
+            const bValidatorType = getValidatorType(bValidator);
+            context.report({
+                key: 'scalar-validator-added',
+                message: `A ${bValidatorType} validator was added to the scalar "${a.getName()}"`,
+                element: a.getName()
+            });
+            return;
+        } else if (aValidator && !bValidator) {
+            const aValidatorType = getValidatorType(aValidator);
+            context.report({
+                key: 'scalar-validator-removed',
+                message: `A ${aValidatorType} validator was removed from the scalar "${a.getName()}"`,
+                element: a.getName()
+            });
+            return;
+        } else if (!aValidator.compatibleWith(bValidator)) {
+            const aValidatorType = getValidatorType(aValidator);
+            context.report({
+                key: 'scalar-validator-changed',
+                message: `A ${aValidatorType} validator for the scalar "${a.getName()}" was changed and is no longer compatible`,
+                element: a.getName()
+            });
+            return;
+        }
+    }
+});
+
+export const scalarDeclarationComparerFactories = [scalarDeclarationExtendsChanged, scalarValidatorChanged];

packages/concerto-analysis/test/fixtures/scalar-added.cto

@@ -0,0 +1,3 @@
+namespace [email protected]
+
+scalar Thing extends String

packages/concerto-analysis/test/fixtures/scalar-changed-extends.cto

@@ -0,0 +1,3 @@
+namespace [email protected]
+
+scalar Thing extends Integer

packages/concerto-analysis/test/fixtures/scalar-number-validator-added.cto

@@ -0,0 +1,3 @@
+namespace [email protected]
+
+scalar Thing extends Integer range=[-1,1]

packages/concerto-analysis/test/fixtures/scalar-number-validator-changed-lowercompat.cto

@@ -0,0 +1,3 @@
+namespace [email protected]
+
+scalar Thing extends Integer range=[-2,1]