mirror of
https://github.com/google/go-jsonnet.git
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b70cbd441a
We used to treat dummy paths like <stdin>, <std>, <extvar> as real import locations, which causes obvious problem for importers. After this change we consistently pass "" (an empty string) as location for non-imported paths. We exposed new functions to properly handle all paths. The first function family, EvaluateFile* which allow evaluating a Jsonnet program at a specified importable path. It should be used in most cases. The second function family, EvaluateAnonymousSnippet* allows evaluating a snippet without an importable path. It should be used for situations like the code passed as a commandline argument, stdin, etc. The old function family, EvaluateSnippet* is now deprecated, but works the same as before, i.e. the passed filenames are treated as imported paths. Changes are required to custom importers to make sure they satisfy the refined contract. Fixes #329.
73 lines
1.8 KiB
Go
73 lines
1.8 KiB
Go
/*
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Copyright 2017 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/google/go-jsonnet/ast"
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"github.com/google/go-jsonnet/internal/dump"
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"github.com/google/go-jsonnet/internal/program"
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)
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func main() {
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if len(os.Args) != 2 {
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fmt.Fprintf(os.Stderr, "usage: %s <file>\n", filepath.Base(os.Args[0]))
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os.Exit(2)
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}
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buf, err := ioutil.ReadFile(os.Args[1])
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if err != nil {
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panic(err)
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}
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node, err := program.SnippetToAST(ast.DiagnosticFileName("<std>"), "", string(buf))
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if err != nil {
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panic(err)
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}
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dump.Config.HidePrivateFields = false
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dump.Config.VariableName = "StdAst"
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dump.Config.VariableDescription = "StdAst is the AST for the standard library."
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ast := dump.Sdump(node)
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dst := os.Stdout
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_, err = dst.WriteString(header)
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if err != nil {
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panic(err)
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}
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_, err = dst.WriteString(ast)
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if err != nil {
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panic(err)
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}
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}
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var header = `
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///////////////////////////////////////////////////////////
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// This file was auto-generated by cmd/dumpstdlibast.go. //
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// https://github.com/google/go-jsonnet#generated-stdlib //
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// //
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// --------------- DO NOT EDIT BY HAND! --------------- //
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///////////////////////////////////////////////////////////
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package astgen
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import (
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"github.com/google/go-jsonnet/ast"
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)
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`[1:]
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