Merge pull request github#5271 from github/files-query

C++: Summary metrics queries

Author: jbj

cpp/ql/src/Summary/LinesOfCode.ql

@@ -0,0 +1,11 @@
+/**
+ * @id cpp/summary/lines-of-code
+ * @name Total lines of C/C++ code in the database
+ * @description The total number of lines of C/C++ code across all files, including system headers, libraries, and auto-generated files. This is a useful metric of the size of a database. For all files that were seen during the build, this query counts the lines of code, excluding whitespace or comments.
+ * @kind metric
+ * @tags summary
+ */
+
+import cpp
+
+select sum(File f | f.fromSource() | f.getMetrics().getNumberOfLinesOfCode())

cpp/ql/test/query-tests/Summary/LinesOfCode.expected

@@ -0,0 +1 @@
+| 93 |

cpp/ql/test/query-tests/Summary/LinesOfCode.qlref

@@ -0,0 +1 @@
+Summary/LinesOfCode.ql

cpp/ql/test/query-tests/Summary/empty-file.cpp

@@ -0,0 +1 @@
+

cpp/ql/test/query-tests/Summary/large-file.cpp

@@ -0,0 +1,123 @@
+int a00(float x) {
+    return (int)x;
+}
+
+int a01(float x) {
+    return (int)x;
+}
+
+int a02(float x) {
+    return (int)x;
+}
+
+int a03(float x) {
+    return (int)x;
+}
+
+int a04(float x) {
+    return (int)x;
+}
+
+int a05(float x) {
+    return (int)x;
+}
+
+int a06(float x) {
+    return (int)x;
+}
+
+/**
+ * This is a multi-line comment
+ */
+int a07(float x) {
+    return (int)x;
+}
+
+// this is a single-line comment
+int a08(float x) {
+    return (int)x;
+}
+
+int a09(float x) {
+    return (int)x;
+}
+
+int a10(float x) {
+    return (int)x;
+}
+
+int a11(float x) {
+    return (int)x;
+}
+
+int a12(float x) {
+    return (int)x;
+}
+
+int a13(float x) {
+    return (int)x;
+}
+
+int a14(float x) {
+    return (int)x;
+}
+
+int a15(float x) {
+    return (int)x;
+}
+
+int a16(float x) {
+    return (int)x;
+}
+
+int a17(float x) {
+    return (int)x;
+}
+
+int a18(float x) {
+    return (int)x;
+}
+
+int a19(float x) {
+    return (int)x;
+}
+
+int a20(float x) {
+    return (int)x;
+}
+
+int a21(float x) {
+    return (int)x;
+}
+
+int a22(float x) {
+    return (int)x;
+}
+
+int a23(float x) {
+    return (int)x;
+}
+
+int a24(float x) {
+    return (int)x;
+}
+
+int a25(float x) {
+    return (int)x;
+}
+
+int a26(float x) {
+    return (int)x;
+}
+
+int a27(float x) {
+    return (int)x;
+}
+
+int a28(float x) {
+    return (int)x;
+}
+
+int a29(float x) {
+    return (int)x;
+}

cpp/ql/test/query-tests/Summary/short-file.cpp

@@ -0,0 +1,3 @@
+int g(float x) {
+    return (int)x;
+}