1 // Copyright 2020 CUE Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package astutil 16 17 import ( 18 "cuelang.org/go/cue/ast" 19 "cuelang.org/go/cue/token" 20 ) 21 22 // ToFile converts an expression to a File. It will create an import section for 23 // any of the identifiers in x that refer to an import and will unshadow 24 // references as appropriate. 25 func ToFile(x ast.Expr) (*ast.File, error) { 26 var f *ast.File 27 if st, ok := x.(*ast.StructLit); ok { 28 f = &ast.File{Decls: st.Elts} 29 } else { 30 ast.SetRelPos(x, token.NoSpace) 31 f = &ast.File{Decls: []ast.Decl{&ast.EmbedDecl{Expr: x}}} 32 } 33 34 if err := Sanitize(f); err != nil { 35 return nil, err 36 } 37 return f, nil 38 } 39