From 00e3f82489a6ef93394275ae61079d08f44347ea Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 25 Oct 2016 00:29:25 +0100
Subject: Add basic support for base classes for routes

---
 icespider/common/routes.ice         | 10 +++++++
 icespider/compile/routeCompiler.cpp | 57 ++++++++++++++++++++++++++++++++++++-
 icespider/compile/routeCompiler.h   |  2 ++
 icespider/unittests/testRoutes.json |  7 +++++
 4 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/icespider/common/routes.ice b/icespider/common/routes.ice
index 37939c1..db6475d 100644
--- a/icespider/common/routes.ice
+++ b/icespider/common/routes.ice
@@ -45,14 +45,24 @@ module IceSpider {
 		Operations operations;
 		string type;
 		OutputSerializers outputSerializers;
+		StringSeq bases;
 	};
 
 	["slicer:json:object"]
 	dictionary<string, Route> Routes;
 
+	class RouteBase {
+		StringSeq proxies;
+		StringSeq functions;
+	};
+
+	["slicer:json:object"]
+	dictionary<string, RouteBase> RouteBases;
+
 	class RouteConfiguration {
 		string name;
 		Routes routes;
+		RouteBases routeBases;
 		StringSeq slices;
 		StringSeq headers;
 	};
diff --git a/icespider/compile/routeCompiler.cpp b/icespider/compile/routeCompiler.cpp
index 0d9be5f..30f7900 100644
--- a/icespider/compile/routeCompiler.cpp
+++ b/icespider/compile/routeCompiler.cpp
@@ -297,11 +297,57 @@ namespace IceSpider {
 				}
 			}
 
+			processBases(output, outputh, c, units);
 			processRoutes(output, c, units);
 
 			fprintf(output, "\n// End generated code.\n");
 		}
 
+		void
+		RouteCompiler::processBases(FILE * output, FILE * outputh, RouteConfigurationPtr c, const Units & u) const
+		{
+			fprintf(outputh, "\n");
+			fprintbf(outputh, "namespace %s {\n", c->name);
+			fprintbf(1, outputh, "// Base classes.\n\n");
+			fprintf(output, "\n");
+			fprintbf(output, "namespace %s {\n", c->name);
+			fprintbf(1, output, "// Base classes.\n\n");
+			for (const auto & r : c->routeBases) {
+				processBase(output, outputh, r, u);
+			}
+			fprintbf(output, "} // namespace %s\n\n", c->name);
+			fprintbf(outputh, "} // namespace %s\n\n", c->name);
+		}
+
+		void
+		RouteCompiler::processBase(FILE * output, FILE * outputh, const RouteBases::value_type & b, const Units &) const
+		{
+			fprintbf(1, outputh, "class %s {\n", b.first);
+			fprintbf(2, outputh, "protected:\n");
+			fprintbf(3, outputh, "%s(const IceSpider::Core * core);\n\n", b.first);
+			for (const auto & f: b.second->functions) {
+				fprintbf(3, outputh, "%s;\n", f);
+			}
+			fprintbf(1, output, "%s::%s(const IceSpider::Core * core)", b.first, b.first);
+			if (!b.second->proxies.empty()) {
+				fprintf(output, " :");
+			}
+			fprintf(output, "\n");
+			unsigned int pn = 0;
+			for (const auto & p : b.second->proxies) {
+				fprintbf(3, outputh, "const %sPrx prx%u;\n",
+						boost::algorithm::replace_all_copy(p, ".", "::"), pn);
+				fprintbf(3, output, "prx%u(core->getProxy<%s>())",
+						pn, boost::algorithm::replace_all_copy(p, ".", "::"));
+				if (++pn < b.second->proxies.size()) {
+					fprintf(output, ",");
+				}
+				fprintf(output, "\n");
+			}
+			fprintbf(1, outputh, "}; // %s\n", b.first);
+			fprintbf(1, output, "{ }\n");
+		}
+
 		void
 		RouteCompiler::processRoutes(FILE * output, RouteConfigurationPtr c, const Units & u) const
 		{
@@ -325,10 +371,19 @@ namespace IceSpider {
 
 			fprintbf(1, output, "// Route name: %s\n", r.first);
 			fprintbf(1, output, "//       path: %s\n", r.second->path);
-			fprintbf(1, output, "class %s : public IceSpider::IRouteHandler {\n", r.first);
+			fprintbf(1, output, "class %s : public IceSpider::IRouteHandler", r.first);
+			for (const auto & b : r.second->bases) {
+				fprintf(output, ",\n");
+				fprintbf(3, output, "public %s", b);
+			}
+			fprintf(output, " {\n");
 			fprintbf(2, output, "public:\n");
 			fprintbf(3, output, "%s(const IceSpider::Core * core) :\n", r.first);
 			fprintbf(4, output, "IceSpider::IRouteHandler(IceSpider::HttpMethod::%s, \"%s\")", methodName, r.second->path);
+			for (const auto & b : r.second->bases) {
+				fprintf(output, ",\n");
+				fprintbf(4, output, "%s(core)", b);
+			}
 			auto proxies = initializeProxies(output, r.second);
 			for (const auto & p : r.second->params) {
 				if (p.second->hasUserSource) {
diff --git a/icespider/compile/routeCompiler.h b/icespider/compile/routeCompiler.h
index 0b5256a..9a2eb8f 100644
--- a/icespider/compile/routeCompiler.h
+++ b/icespider/compile/routeCompiler.h
@@ -28,6 +28,8 @@ namespace IceSpider {
 				typedef std::map<std::string, int> Proxies;
 
 				void processConfiguration(FILE * output, FILE * outputh, const std::string & name, RouteConfigurationPtr, const Units &) const;
+				void processBases(FILE * output, FILE * outputh, RouteConfigurationPtr, const Units &) const;
+				void processBase(FILE * output, FILE * outputh, const RouteBases::value_type &, const Units &) const;
 				void processRoutes(FILE * output, RouteConfigurationPtr, const Units &) const;
 				void processRoute(FILE * output, const Routes::value_type &, const Units &) const;
 				void registerOutputSerializers(FILE * output, RoutePtr) const;
diff --git a/icespider/unittests/testRoutes.json b/icespider/unittests/testRoutes.json
index 3bc6fda..bc1b94f 100644
--- a/icespider/unittests/testRoutes.json
+++ b/icespider/unittests/testRoutes.json
@@ -1,6 +1,12 @@
 {
 	"name": "common",
 	"headers": [ "xsltStreamSerializer.h" ],
+	"routeBases": {
+		"base1": {
+			"proxies": ["TestIceSpider.TestApi"],
+			"functions": [ "void doNothing()" ]
+		}
+	},
 	"routes": {
 		"index": {
 			"path": "/",
@@ -11,6 +17,7 @@
 					"params": [ "\"xslt/transform.xslt\"" ]
 				}
 			},
+			"bases": [ "base1" ],
 			"operation": "TestIceSpider.TestApi.index"
 		},
 		"item": {
-- 
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