JavaScript: Add a few metric queries for API graphs.

Author: Max Schaefer

javascript/ql/src/meta/ApiGraphs/ApiGraphEdges.ql

@@ -0,0 +1,15 @@
+/**
+ * @name API-graph edges
+ * @description The number of edges (other than points-to edges) in the API graph.
+ * @kind metric
+ * @metricType project
+ * @metricAggregate sum
+ * @tags meta
+ * @id js/meta/api-graph-edges
+ */
+
+import javascript
+import meta.MetaMetrics
+
+select projectRoot(),
+  count(API::Node pred, string lbl, API::Node succ | succ = pred.getASuccessor(lbl))

javascript/ql/src/meta/ApiGraphs/ApiGraphNodes.ql

@@ -0,0 +1,14 @@
+/**
+ * @name API-graph nodes
+ * @description The number of nodes in the API graph.
+ * @kind metric
+ * @metricType project
+ * @metricAggregate sum
+ * @tags meta
+ * @id js/meta/api-graph-nodes
+ */
+
+import javascript
+import meta.MetaMetrics
+
+select projectRoot(), count(API::Node nd)

javascript/ql/src/meta/ApiGraphs/ApiGraphPointsToEdges.ql

@@ -0,0 +1,14 @@
+/**
+ * @name API-graph points-to edges
+ * @description The number of points-to edges in the API graph.
+ * @kind metric
+ * @metricType project
+ * @metricAggregate sum
+ * @tags meta
+ * @id js/meta/api-graph-points-to-edges
+ */
+
+import javascript
+import meta.MetaMetrics
+
+select projectRoot(), count(API::Node pred, API::Node succ | pred.refersTo(succ))

javascript/ql/src/meta/ApiGraphs/ApiGraphRhsNodes.ql

@@ -0,0 +1,15 @@
+/**
+ * @name API-graph right-hand-side nodes
+ * @description The number of data-flow nodes corresponding to a right-hand side of
+ *              a definition of an API-graph node.
+ * @kind metric
+ * @metricType project
+ * @metricAggregate sum
+ * @tags meta
+ * @id js/meta/api-graph-rhs-nodes
+ */
+
+import javascript
+import meta.MetaMetrics
+
+select projectRoot(), count(any(API::Node nd).getARhs())

javascript/ql/src/meta/ApiGraphs/ApiGraphUseNodes.ql

@@ -0,0 +1,14 @@
+/**
+ * @name API-graph use nodes
+ * @description The number of data-flow nodes corresponding to a use of an API-graph node.
+ * @kind metric
+ * @metricType project
+ * @metricAggregate sum
+ * @tags meta
+ * @id js/meta/api-graph-use-nodes
+ */
+
+import javascript
+import meta.MetaMetrics
+
+select projectRoot(), count(any(API::Node nd).getAUse())