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// Copyright 2024 The Sqlite Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build none
// +build none
// Tool for 1.28+ -> 1.29+. Pulls adjusted libsqlite3 code to this repo.
package main
import (
"bytes"
"fmt"
"go/token"
"os"
"path/filepath"
"strings"
"modernc.org/gc/v3"
)
func fail(rc int, msg string, args ...any) {
fmt.Fprintln(os.Stderr, strings.TrimSpace(fmt.Sprintf(msg, args...)))
os.Exit(rc)
}
func main() {
for _, v := range []struct{ goos, goarch string }{
{"darwin", "amd64"},
{"darwin", "arm64"},
{"freebsd", "amd64"},
{"freebsd", "arm64"},
{"linux", "386"},
{"linux", "amd64"},
{"linux", "arm"},
{"linux", "arm64"},
{"linux", "loong64"},
{"linux", "ppc64le"},
{"linux", "riscv64"},
{"linux", "s390x"},
{"windows", "386"},
{"windows", "amd64"},
} {
base := fmt.Sprintf("ccgo_%s_%s.go", v.goos, v.goarch)
if v.goos == "windows" && v.goarch == "amd64" {
base = "ccgo_windows.go"
}
ifn := filepath.Join("..", "libsqlite3", base)
fmt.Printf("%s/%s\t%s\n", v.goos, v.goarch, ifn)
in, err := os.ReadFile(ifn)
if err != nil {
fail(1, "%s\n", err)
}
ast, err := gc.ParseFile(ifn, in)
if err != nil {
fail(1, "%s\n", err)
}
b := bytes.NewBuffer(nil)
s := ast.SourceFile.PackageClause.Source(true)
s = strings.Replace(s, "package libsqlite3", "package sqlite3", 1)
fmt.Fprintln(b, s)
fmt.Fprint(b, ast.SourceFile.ImportDeclList.Source(true))
taken := map[string]struct{}{}
for n := ast.SourceFile.TopLevelDeclList; n != nil; n = n.List {
switch x := n.TopLevelDecl.(type) {
case *gc.TypeDeclNode:
adn := x.TypeSpecList.TypeSpec.(*gc.AliasDeclNode)
nm := adn.IDENT.Src()
taken[nm] = struct{}{}
}
}
loop:
for n := ast.SourceFile.TopLevelDeclList; n != nil; n = n.List {
switch x := n.TopLevelDecl.(type) {
case *gc.ConstDeclNode:
switch y := x.ConstSpec.(type) {
case *gc.ConstSpecNode:
if y.IDENT.Src() != "SQLITE_TRANSIENT" {
fmt.Fprintln(b, x.Source(true))
}
default:
panic(fmt.Sprintf("%v: %T %q", x.Position(), y, x.Source(false)))
}
case *gc.FunctionDeclNode:
fmt.Fprintln(b, x.Source(true))
case *gc.TypeDeclNode:
fmt.Fprintln(b, x.Source(true))
adn := x.TypeSpecList.TypeSpec.(*gc.AliasDeclNode)
nm := adn.IDENT.Src()
nm2 := nm[1:]
if _, ok := taken[nm2]; ok {
break
}
if token.IsExported(nm) {
fmt.Fprintf(b, "\ntype %s = %s\n", nm2, nm)
}
case *gc.VarDeclNode:
fmt.Fprintln(b, x.Source(true))
default:
fmt.Printf("%v: TODO %T\n", n.Position(), x)
break loop
}
}
b.WriteString(`
type Sqlite3_int64 = sqlite3_int64
type Sqlite3_mutex_methods = sqlite3_mutex_methods
type Sqlite3_value = sqlite3_value
type Sqlite3_index_info = sqlite3_index_info
type Sqlite3_module = sqlite3_module
type Sqlite3_vtab = sqlite3_vtab
type Sqlite3_vtab_cursor = sqlite3_vtab_cursor
`)
base = strings.Replace(base, "ccgo_", "sqlite_", 1)
if err := os.WriteFile(filepath.Join("lib", base), b.Bytes(), 0660); err != nil {
fail(1, "%s\n", err)
}
}
}
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