AK: Add SourceGenerator class.

AK/Tests/TestSourceGenerator.cpp

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/TestSuite.h>
+
+#include <AK/SourceGenerator.h>
+
+TEST_CASE(generate_c_code)
+{
+    SourceGenerator generator;
+    generator.set("name", "foo");
+
+    generator.append("const char* @name@ (void) { return \"@name@\"; }");
+
+    EXPECT_EQ(generator.generate(), "const char* foo (void) { return \"foo\"; }");
+}
+
+TEST_CASE(scoped)
+{
+    SourceGenerator global_generator;
+
+    global_generator.append("\n");
+
+    global_generator.set("foo", "foo-0");
+    global_generator.set("bar", "bar-0");
+    global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+
+    {
+        SourceGenerator scoped_generator_1 { global_generator };
+
+        scoped_generator_1.set("bar", "bar-1");
+        global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+    }
+
+    global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+
+    {
+        SourceGenerator scoped_generator_2 { global_generator };
+
+        scoped_generator_2.set("foo", "foo-2");
+        scoped_generator_2.append("@foo@ @bar@\n"); // foo-2 bar-0
+
+        {
+            // FIXME: This is never put onto the output?
+
+            SourceGenerator scoped_generator_3 { scoped_generator_2 };
+            scoped_generator_3.set("bar", "bar-3");
+            scoped_generator_3.append("@foo@ @bar@\n"); // foo-2 bar-3
+        }
+
+        {
+            SourceGenerator scoped_generator_4 { global_generator };
+            scoped_generator_4.append("@foo@ @bar@\n"); // foo-0 bar-0
+        }
+
+        scoped_generator_2.append("@foo@ @bar@\n"); // foo-2 bar-0
+    }
+
+    EXPECT_EQ(global_generator.generate(), "\nfoo-0 bar-0\nfoo-0 bar-0\nfoo-0 bar-0\nfoo-2 bar-0\nfoo-2 bar-3\nfoo-0 bar-0\nfoo-2 bar-0\n");
+}
+
+TEST_MAIN(SourceGenerator)