Merge pull request #43 from YosysHQ/common_main

Common main and project

1 files changed, 86 insertions, 0 deletions

diff --git a/common/project.cc b/common/project.cc
new file mode 100644
index 00000000..244ca761
--- /dev/null
+++ b/common/project.cc
@@ -0,0 +1,86 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Miodrag Milanovic <miodrag@symbioticeda.com>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "project.h"
+#include <boost/filesystem/convenience.hpp>
+#include <boost/property_tree/json_parser.hpp>
+#include <fstream>
+#include "jsonparse.h"
+#include "log.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+void ProjectHandler::save(Context *ctx, std::string filename)
+{
+    std::ofstream f(filename);
+    pt::ptree root;
+    root.put("project.version", 1);
+    root.put("project.name", boost::filesystem::basename(filename));
+    root.put("project.arch.name", ctx->archId().c_str(ctx));
+    root.put("project.arch.type", ctx->archArgsToId(ctx->archArgs()).c_str(ctx));
+    /*  root.put("project.input.json", );*/
+    root.put("project.params.freq", int(ctx->target_freq / 1e6));
+    root.put("project.params.seed", ctx->rngstate);
+    saveArch(ctx, root);
+    pt::write_json(f, root);
+}
+
+std::unique_ptr<Context> ProjectHandler::load(std::string filename)
+{
+    std::unique_ptr<Context> ctx;
+    try {
+        pt::ptree root;
+        boost::filesystem::path proj(filename);
+        pt::read_json(filename, root);
+        log_info("Loading project %s...\n", filename.c_str());
+        log_break();
+
+        int version = root.get<int>("project.version");
+        if (version != 1)
+            log_error("Wrong project format version.\n");
+
+        ctx = createContext(root);
+
+        std::string arch_name = root.get<std::string>("project.arch.name");
+        if (arch_name != ctx->archId().c_str(ctx.get()))
+            log_error("Unsuported project architecture.\n");
+
+        auto project = root.get_child("project");
+        auto input = project.get_child("input");
+        std::string filename = input.get<std::string>("json");
+        boost::filesystem::path json = proj.parent_path() / filename;
+        std::ifstream f(json.string());
+        if (!parse_json_file(f, filename, ctx.get()))
+            log_error("Loading design failed.\n");
+
+        if (project.count("params")) {
+            auto params = project.get_child("params");
+            if (params.count("freq"))
+                ctx->target_freq = params.get<double>("freq") * 1e6;
+            if (params.count("seed"))
+                ctx->rngseed(params.get<uint64_t>("seed"));
+        }
+        loadArch(ctx.get(), root, proj.parent_path().string());
+    } catch (...) {
+        log_error("Error loading project file.\n");
+    }
+    return ctx;
+}
+
+NEXTPNR_NAMESPACE_END