add batchjobs for c++ modules

1 files changed, 107 insertions, 0 deletions

diff --git a/xmake/rules/c++/modules/msvc.lua b/xmake/rules/c++/modules/msvc.lua
new file mode 100644
index 000000000..43b000c9b
--- /dev/null
+++ b/xmake/rules/c++/modules/msvc.lua
@@ -0,0 +1,107 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+-- Copyright (C) 2015-present, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        msvc.lua
+--
+
+-- imports
+import("core.tool.compiler")
+
+-- build module files
+function _build_modulefiles(target, sourcebatch, opt)
+
+    -- get modules flag
+    local modulesflag
+    local compinst = compiler.load("cxx", {target = target})
+    if compinst:has_flags("/experimental:module") then
+        modulesflag = "/experimental:module"
+    end
+    assert(modulesflag, "compiler(msvc): does not support c++ module!")
+
+    -- get output flag
+    local cachedir
+    local outputflag
+    if compinst:has_flags("/ifcOutput")  then
+        outputflag = "/ifcOutput"
+        cachedir = path.join(target:autogendir(), "rules", "modules", "cache")
+        if not os.isdir(cachedir) then
+            os.mkdir(cachedir)
+        end
+    elseif compinst:has_flags("/module:output") then
+        outputflag = "/module:output"
+    end
+    assert(outputflag, "compiler(msvc): does not support c++ module!")
+
+    -- get interface flag
+    local interfaceflag
+    if compinst:has_flags("/interface") then
+        interfaceflag = "/interface"
+    elseif compinst:has_flags("/module:interface") then
+        interfaceflag = "/module:interface"
+    end
+    assert(interfaceflag, "compiler(msvc): does not support c++ module!")
+
+    -- get reference flag
+    local referenceflag
+    if compinst:has_flags("/reference") then
+        referenceflag = "/reference"
+    elseif compinst:has_flags("/module:interface") then
+        referenceflag = "/module:reference"
+    end
+    assert(referenceflag, "compiler(msvc): does not support c++ module!")
+
+    -- attempt to compile the module files as cxx
+    local modulefiles = {}
+    opt = table.join(opt, {configs = {}})
+    sourcebatch.sourcekind = "cxx"
+    sourcebatch.objectfiles = sourcebatch.objectfiles or {}
+    sourcebatch.dependfiles = sourcebatch.dependfiles or {}
+    for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
+        local objectfile = target:objectfile(sourcefile)
+        local dependfile = target:dependfile(objectfile)
+        local modulefile = (cachedir and path.join(cachedir, path.basename(sourcefile)) or objectfile) .. ".ifc"
+
+        -- compile module file to *.pcm
+        local singlebatch = {sourcekind = "cxx", sourcefiles = {sourcefile}, objectfiles = {objectfile}, dependfiles = {dependfile}}
+        opt.configs.cxxflags = {modulesflag, interfaceflag, outputflag .. " " .. os.args(modulefile), "/TP"}
+        if cachedir then
+            table.insert(opt.configs.cxxflags, "/ifcSearchDir " .. os.args(cachedir))
+        end
+        import("private.action.build.object").build(target, singlebatch, opt)
+        table.insert(modulefiles, modulefile)
+        table.insert(sourcebatch.objectfiles, objectfile)
+        table.insert(sourcebatch.dependfiles, dependfile)
+    end
+
+    -- add module files
+    for _, modulefile in ipairs(modulefiles) do
+        target:add("cxxflags", modulesflag)
+        if cachedir then
+            target:add("cxxflags", "/ifcSearchDir " .. os.args(cachedir))
+        else
+            target:add("cxxflags", referenceflag .. " " .. os.args(modulefile))
+        end
+    end
+end
+
+function build_with_batchjobs(target, batchjobs, sourcebatch, opt)
+    local rootjob = opt.rootjob
+    batchjobs:addjob("rule/c++.build.modules/msvc", function (index, total)
+        opt.progress = (index * 100) / total
+        _build_modulefiles(target, sourcebatch, opt)
+    end, {rootjob = rootjob})
+end