pr: Add option to use interactive server in parser conversion pass.

Author: frabert

include/vast/Conversion/Parser/Passes.hpp

@@ -4,6 +4,8 @@
 
 #include "vast/Util/Warnings.hpp"
 
+#include "vast/server/server.hpp"
+
 VAST_RELAX_WARNINGS
 #include <mlir/Pass/Pass.h>
 #include <mlir/Pass/PassManager.h>

include/vast/Conversion/Parser/Passes.td

@@ -10,6 +10,9 @@ def HLToParser : Pass<"vast-hl-to-parser", "core::ModuleOp"> {
     let options = [
         Option< "config", "config", "std::string", "",
             "Configuration file for parser transformation."
+        >,
+        Option< "socket", "socket", "std::string", "",
+            "Unix socket path to use for server"
         >
     ];
 

include/vast/server/types.hpp

@@ -4,11 +4,36 @@
 
 #include <concepts>
 #include <cstdint>
+#include <optional>
 #include <string>
 #include <variant>
 
 #include <nlohmann/json.hpp>
 
+namespace nlohmann {
+    template< typename T >
+    struct adl_serializer< std::optional< T > >
+    {
+        static void to_json(json &j, const std::optional< T > &opt) {
+            if (!opt.has_value()) {
+                j = nullptr;
+            } else {
+                j = *opt; // this will call adl_serializer<T>::to_json which will
+                          // find the free function to_json in T's namespace!
+            }
+        }
+
+        static void from_json(const json &j, std::optional< T > &opt) {
+            if (j.is_null()) {
+                opt = std::nullopt;
+            } else {
+                opt = j.template get< T >(); // same as above, but with
+                                             // adl_serializer<T>::from_json
+            }
+        }
+    };
+} // namespace nlohmann
+
 namespace vast::server {
     template< typename T >
     concept json_convertible = requires(T obj, nlohmann::json &json) {
@@ -88,14 +113,33 @@ namespace vast::server {
     template< request_like request >
     using result_type = std::variant< typename request::response_type, error< request > >;
 
+    struct position
+    {
+        unsigned int line;
+        unsigned int character;
+
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE(position, line, character)
+    };
+
+    struct range
+    {
+        position start;
+        position end;
+
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE(range, start, end)
+    };
+
     struct input_request
     {
         static constexpr const char *method   = "input";
         static constexpr bool is_notification = false;
 
         nlohmann::json type;
         std::string text;
-        NLOHMANN_DEFINE_TYPE_INTRUSIVE(input_request, type, text)
+        std::optional< std::string > filePath;
+        std::optional< range > range;
+
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE(input_request, type, text, filePath, range)
 
         struct response_type
         {

lib/vast/Conversion/Parser/ToParser.cpp

@@ -29,6 +29,9 @@ VAST_UNRELAX_WARNINGS
 
 #include "vast/Conversion/Parser/Config.hpp"
 
+#include "vast/server/server.hpp"
+#include "vast/server/types.hpp"
+
 #include <ranges>
 
 namespace vast::conv {
@@ -75,6 +78,141 @@ namespace vast::conv {
 
     using function_models = llvm::StringMap< function_model >;
 
+    struct location
+    {
+        std::string filePath;
+        server::range range;
+    };
+
+    location get_location(file_loc_t loc) {
+        return {
+            .filePath = loc.getFilename().str(),
+            .range = {
+                .start = { loc.getLine(), loc.getColumn(), },
+                .end = { loc.getLine(), loc.getColumn(), },
+            },
+        };
+    }
+
+    location get_location(name_loc_t loc) {
+        return get_location(mlir::cast< file_loc_t >(loc.getChildLoc()));
+    }
+
+    std::optional< location > get_location(loc_t loc) {
+        if (auto file_loc = mlir::dyn_cast< file_loc_t >(loc)) {
+            return get_location(file_loc);
+        } else if (auto name_loc = mlir::dyn_cast< name_loc_t >(loc)) {
+            return get_location(name_loc);
+        }
+
+        return std::nullopt;
+    }
+
+    pr::data_type parse_type_name(const std::string &name) {
+        if (name == "data") {
+            return pr::data_type::data;
+        } else if (name == "nodata") {
+            return pr::data_type::nodata;
+        } else {
+            return pr::data_type::maybedata;
+        }
+    }
+
+    function_category ask_user_for_category(vast::server::server_base &server, hl::FuncOp op) {
+        auto loc = op.getLoc();
+
+        vast::server::input_request req{
+            .type = {"nonparser", "sink", "source", "parser",},
+            .text = "Please choose category for function `" + op.getSymName().str() + '`',
+            .filePath = std::nullopt,
+            .range = std::nullopt,
+        };
+
+        if (auto req_loc = get_location(loc)) {
+            req.filePath = req_loc->filePath;
+            req.range    = req_loc->range;
+        }
+
+        auto response = server.send_request(req);
+        if (auto result = std::get_if< vast::server::input_request::response_type >(&response))
+        {
+            if (result->value == "nonparser") {
+                return function_category::nonparser;
+            } else if (result->value == "sink") {
+                return function_category::sink;
+            } else if (result->value == "source") {
+                return function_category::source;
+            } else if (result->value == "parser") {
+                return function_category::parser;
+            }
+        }
+        return function_category::nonparser;
+    }
+
+    pr::data_type ask_user_for_return_type(vast::server::server_base &server, hl::FuncOp op) {
+        auto loc = op.getLoc();
+
+        vast::server::input_request req{
+            .type = { "maybedata", "nodata", "data" },
+            .text = "Please choose return type for function `" + op.getSymName().str() + '`',
+            .filePath = std::nullopt,
+            .range    = std::nullopt,
+        };
+
+        if (auto req_loc = get_location(loc)) {
+            req.filePath = req_loc->filePath;
+            req.range    = req_loc->range;
+        }
+
+        auto response = server.send_request(req);
+        if (auto result = std::get_if< vast::server::input_request::response_type >(&response))
+        {
+            return parse_type_name(result->value);
+        }
+        return pr::data_type::maybedata;
+    }
+
+    pr::data_type ask_user_for_argument_type(
+        vast::server::server_base &server, hl::FuncOp op, unsigned int idx
+    ) {
+        auto num_body_args = op.getFunctionBody().getNumArguments();
+
+        vast::server::input_request req{
+            .type = { "maybedata", "nodata", "data" },
+            .text = "Please choose a type for argument " + std::to_string(idx)
+                + " of function `" + op.getSymName().str() + '`',
+            .filePath = std::nullopt,
+            .range    = std::nullopt,
+        };
+
+        if (idx < num_body_args) {
+            auto arg = op.getArgument(idx);
+            auto loc = arg.getLoc();
+            if (auto req_loc = get_location(loc)) {
+                req.filePath = req_loc->filePath;
+                req.range    = req_loc->range;
+            }
+        }
+
+        auto response = server.send_request(req);
+        if (auto result = std::get_if< vast::server::input_request::response_type >(&response))
+        {
+            return parse_type_name(result->value);
+        }
+        return pr::data_type::maybedata;
+    }
+
+    function_model
+    ask_user_for_function_model(vast::server::server_base &server, hl::FuncOp op) {
+        function_model model;
+        model.return_type = ask_user_for_return_type(server, op);
+        for (unsigned int i = 0; i < op.getNumArguments(); ++i) {
+            model.arguments.push_back(ask_user_for_argument_type(server, op, i));
+        }
+        model.category = ask_user_for_category(server, op);
+        return model;
+    }
+
 } // namespace vast::conv
 
 LLVM_YAML_IS_SEQUENCE_VECTOR(vast::pr::data_type);
@@ -130,25 +268,28 @@ namespace vast::conv {
         using base = base_conversion_config;
 
         parser_conversion_config(
-            rewrite_pattern_set patterns, conversion_target target,
-            const function_models &models
+            rewrite_pattern_set patterns, conversion_target target, function_models &models,
+            vast::server::server_base *server
         )
-            : base(std::move(patterns), std::move(target)), models(models)
-        {}
+            : base(std::move(patterns), std::move(target)), models(models), server(server) {}
 
         template< typename pattern >
         void add_pattern() {
             auto ctx = patterns.getContext();
             if constexpr (std::is_constructible_v< pattern, mcontext_t * >) {
                 patterns.template add< pattern >(ctx);
-            } else if constexpr (std::is_constructible_v< pattern, mcontext_t *, const function_models & >) {
-                patterns.template add< pattern >(ctx, models);
+            } else if constexpr (std::is_constructible_v<
+                                     pattern, mcontext_t *, function_models &,
+                                     vast::server::server_base * >)
+            {
+                patterns.template add< pattern >(ctx, models, server);
             } else {
                 static_assert(false, "pattern does not have a valid constructor");
             }
         }
 
-        const function_models &models;
+        function_models &models;
+        vast::server::server_base *server;
     };
 
     struct function_type_converter
@@ -277,24 +418,33 @@ namespace vast::conv {
         {
             using base = mlir::OpConversionPattern< op_t >;
 
-            parser_conversion_pattern_base(mcontext_t *mctx, const function_models &models)
-                : base(mctx), models(models)
-            {}
+            parser_conversion_pattern_base(
+                mcontext_t *mctx, function_models &models, vast::server::server_base *server
+            )
+                : base(mctx), models(models), server(server) {}
 
-            static std::optional< function_model >
-            get_model(const function_models &models, hl::FuncOp func) {
+            static std::optional< function_model > get_model(
+                function_models &models, hl::FuncOp func, vast::server::server_base *server
+            ) {
                 if (auto kv = models.find(func.getSymName()); kv != models.end()) {
                     return kv->second;
                 }
 
+                if (server) {
+                    auto model                = ask_user_for_function_model(*server, func);
+                    models[func.getSymName()] = model;
+                    return model;
+                }
+
                 return std::nullopt;
             }
 
             std::optional< function_model > get_model(hl::FuncOp func) const {
-                return get_model(models, func);
+                return get_model(models, func, server);
             }
 
-            const function_models &models;
+            function_models &models;
+            vast::server::server_base *server;
         };
 
         //
@@ -541,10 +691,13 @@ namespace vast::conv {
                 return mlir::failure();
             }
 
-            static void legalize(parser_conversion_config &cfg) {
+            static void
+            legalize(parser_conversion_config &cfg, vast::server::server_base *server) {
                 cfg.target.addLegalOp< mlir::UnrealizedConversionCastOp >();
-                cfg.target.addDynamicallyLegalOp< op_t >([models = cfg.models](op_t op) {
-                    return function_type_converter(*op.getContext(), get_model(models, op))
+                cfg.target.addDynamicallyLegalOp< op_t >([&cfg, server](op_t op) {
+                    return function_type_converter(
+                               *op.getContext(), get_model(cfg.models, op, server)
+                    )
                         .isLegal(op.getFunctionType());
                 });
             }
@@ -708,6 +861,9 @@ namespace vast::conv {
     {
         using base = ConversionPassMixin< HLToParserPass, HLToParserBase >;
 
+        struct server_handler
+        {};
+
         static conversion_target create_conversion_target(mcontext_t &mctx) {
             return conversion_target(mctx);
         }
@@ -722,6 +878,12 @@ namespace vast::conv {
             if (!config.empty()) {
                 load_and_parse(config);
             }
+
+            if (!socket.empty()) {
+                server = std::make_shared< vast::server::server< server_handler > >(
+                    vast::server::sock_adapter::create_unix_socket(socket)
+                );
+            }
         }
 
         void load_and_parse(string_ref config) {
@@ -748,10 +910,12 @@ namespace vast::conv {
 
         parser_conversion_config make_config() {
             auto &ctx = getContext();
-            return { rewrite_pattern_set(&ctx), create_conversion_target(ctx), models };
+            return { rewrite_pattern_set(&ctx), create_conversion_target(ctx), models,
+                     server.get() };
         }
 
         function_models models;
+        std::shared_ptr< vast::server::server< server_handler > > server;
     };
 
 } // namespace vast::conv