cuelang.org/go@v0.13.0/cue/ast/astutil/resolve_test.go (about)

     1  // Copyright 2021 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_test
    16  
    17  import (
    18  	"fmt"
    19  	"path/filepath"
    20  	"testing"
    21  	"text/tabwriter"
    22  
    23  	"cuelang.org/go/cue/ast"
    24  	"cuelang.org/go/internal/astinternal"
    25  	"cuelang.org/go/internal/cuetxtar"
    26  )
    27  
    28  func TestResolve(t *testing.T) {
    29  	test := cuetxtar.TxTarTest{
    30  		Root: "./testdata/resolve",
    31  		Name: "resolve",
    32  	}
    33  
    34  	test.Run(t, func(t *cuetxtar.Test) {
    35  		// Use RawInstances because we want to allow imports
    36  		// without actually providing any dependencies. In general,
    37  		// Resolve is used just after parsing anyway, so lower level
    38  		// is more appropriate.
    39  		a := t.RawInstances()[0]
    40  
    41  		for _, f := range a.Files {
    42  			if filepath.Ext(f.Filename) != ".cue" {
    43  				continue
    44  			}
    45  
    46  			identMap := map[ast.Node]int{}
    47  			ast.Walk(f, func(n ast.Node) bool {
    48  				switch n.(type) {
    49  				case *ast.File, *ast.StructLit, *ast.Field, *ast.ImportSpec,
    50  					*ast.Ident, *ast.ForClause, *ast.LetClause, *ast.Alias:
    51  					identMap[n] = len(identMap) + 1
    52  				}
    53  				return true
    54  			}, nil)
    55  
    56  			// Resolve was already called.
    57  
    58  			base := filepath.Base(f.Filename)
    59  			b := t.Writer(base[:len(base)-len(".cue")])
    60  			w := tabwriter.NewWriter(b, 0, 4, 1, ' ', 0)
    61  			ast.Walk(f, func(n ast.Node) bool {
    62  				if x, ok := n.(*ast.Ident); ok {
    63  					fmt.Fprintf(w, "%d[%s]:\tScope: %d[%T]\tNode: %d[%s]\n",
    64  						identMap[x], astinternal.DebugStr(x),
    65  						identMap[x.Scope], x.Scope,
    66  						identMap[x.Node], astinternal.DebugStr(x.Node))
    67  				}
    68  				return true
    69  			}, nil)
    70  			w.Flush()
    71  
    72  			fmt.Fprint(b)
    73  		}
    74  	})
    75  }