go-jsonnet/cmd/dumpstdlibast/dumpstdlibast.go
Stanisław Barzowski c77f22c99f Eliminate the unnecessary ast.StdAst
The initially empty ast.StdAst was created to break the circular
dependency. The generation of stdlib AST used to depend on
the primary "jsonnet" package, which meant that "jsonnet"
could not depend on it directly. Hence stdlib needed to be put
in the ast package. Now dumpstdlibast no longer depends on Jsonnet,
so we can get rid of this complication.

All code using ast.StdAst should now use astgen.StdAst.
2019-09-01 21:17:29 +02:00

66 lines
1.7 KiB
Go

/*
Copyright 2017 Google Inc. 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/ioutil"
"os"
"path/filepath"
"github.com/google/go-jsonnet/internal/dump"
"github.com/google/go-jsonnet/internal/program"
)
func main() {
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr, "usage: %s <file>\n", filepath.Base(os.Args[0]))
os.Exit(2)
}
buf, err := ioutil.ReadFile(os.Args[1])
if err != nil {
panic(err)
}
node, err := program.SnippetToAST("<std>", string(buf))
if err != nil {
panic(err)
}
dump.Config.HidePrivateFields = false
dump.Config.VariableName = "StdAst"
dump.Config.VariableDescription = "StdAst is the AST for the standard library."
ast := dump.Sdump(node)
dst := os.Stdout
dst.WriteString(header)
dst.WriteString(ast)
}
var header = `
///////////////////////////////////////////////////////////
// This file was auto-generated by cmd/dumpstdlibast.go. //
// https://github.com/google/go-jsonnet#generated-stdlib //
// //
// --------------- DO NOT EDIT BY HAND! --------------- //
///////////////////////////////////////////////////////////
package astgen
import (
"github.com/google/go-jsonnet/ast"
)
`[1:]