llcppg

c/cjson/cjson.go

@@ -17,7 +17,7 @@
 package cjson
 
 import (
-	_ "unsafe"
+	"unsafe"
 
 	"github.com/goplus/llgo/c"
 )
@@ -31,6 +31,20 @@ type JSON struct {
 	Unused [0]byte
 }
 
+//go:linkname Parse C.cJSON_Parse
+func Parse(value *c.Char) *JSON
+
+//go:linkname ParseWithLength C.cJSON_ParseWithLength
+func ParseWithLength(value *byte, valueLength uintptr) *JSON
+
+func ParseBytes(value []byte) *JSON {
+	return ParseWithLength(unsafe.SliceData(value), uintptr(len(value)))
+}
+
+func ParseString(value string) *JSON {
+	return ParseWithLength(unsafe.StringData(value), uintptr(len(value)))
+}
+
 //go:linkname Null C.cJSON_CreateNull
 func Null() *JSON
 

chore/_xtool/llcppsigfetch/llcppsigfetch.go

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * 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.
+ */
+
+package main
+
+func main() {
+	// TODO(xsw): implement llcppsigfetch tool
+}

chore/_xtool/llcppsymg/llcppsymg.go

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * 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.
+ */
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/cjson"
+)
+
+func main() {
+	cfgFile := "llcppg.cfg"
+	if len(os.Args) > 1 {
+		cfgFile = os.Args[1]
+	}
+
+	var data []byte
+	var err error
+	if cfgFile == "-" {
+		data, err = io.ReadAll(os.Stdin)
+	} else {
+		data, err = os.ReadFile(cfgFile)
+	}
+	check(err)
+
+	conf := cjson.ParseBytes(data)
+	if conf == nil {
+		fmt.Fprintln(os.Stderr, "Failed to parse config file:", cfgFile)
+		os.Exit(1)
+	}
+	defer conf.Delete()
+
+	c.Printf(c.Str("%s"), conf.Print())
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

chore/gogensig/gogensig.go

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * 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.
+ */
+
+package main
+
+func main() {
+	// TODO(xsw): implement gogensig tool
+}

chore/llcppg/design.md

@@ -45,8 +45,7 @@ It generates a symbol table file named `llcppg.symb.json`. Its file format is as
     "mangle": "_ZN9INIReaderC1EPKcm",
     "c++": "INIReader::INIReader(char const*, unsigned long)",
     "go": "(*Reader).Init__0"
-  },
+  }
-  ...
 ]
 ```
 
@@ -60,7 +59,7 @@ llcppsigfetch -  # read config from stdin
 
 It fetches information of C/C++ symbols and print to stdout. Its format is as follows:
 
-```json
+```
 TODO: see llgo/xtool/clang/ast
 ```
 

chore/llcppg/llcppg.go

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * 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.
+ */
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+
+	"github.com/goplus/llgo/chore/llcppg/types"
+	"github.com/goplus/llgo/xtool/env"
+)
+
+func llcppsymg(conf []byte) error {
+	cmd := exec.Command("llcppsymg", "-")
+	cmd.Stdin = bytes.NewReader(conf)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func llcppsigfetch(conf []byte, out io.Writer) {
+	cmd := exec.Command("llcppsigfetch", "-")
+	cmd.Stdin = bytes.NewReader(conf)
+	cmd.Stdout = out
+	cmd.Stderr = os.Stderr
+	err := cmd.Run()
+	check(err)
+}
+
+func gogensig(in io.Reader) error {
+	cmd := exec.Command("gogensig")
+	cmd.Stdin = in
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func main() {
+	cfgFile := "llcppg.cfg"
+	if len(os.Args) > 1 {
+		cfgFile = os.Args[1]
+	}
+	if cfgFile == "-h" || cfgFile == "--help" {
+		fmt.Fprintln(os.Stderr, "Usage: llcppg [config-file]")
+		return
+	}
+
+	f, err := os.Open(cfgFile)
+	check(err)
+	defer f.Close()
+
+	var conf types.Config
+	json.NewDecoder(f).Decode(&conf)
+	conf.CFlags = env.ExpandEnv(conf.CFlags)
+	conf.Libs = env.ExpandEnv(conf.Libs)
+
+	b, err := json.MarshalIndent(&conf, "", "  ")
+	check(err)
+
+	err = llcppsymg(b)
+	check(err)
+
+	r, w := io.Pipe()
+	go llcppsigfetch(b, w)
+
+	err = gogensig(r)
+	check(err)
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

chore/llcppg/types/types.go

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * 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.
+ */
+
+package types
+
+// Config represents a configuration for the llcppg tool.
+type Config struct {
+	Name         string   `json:"name"`
+	CFlags       string   `json:"cflags"`
+	Libs         string   `json:"libs"`
+	Include      []string `json:"include"`
+	TrimPrefixes []string `json:"trimPrefixes"`
+}