1 files changed, 0 insertions, 150 deletions
diff --git a/tools/go_generics/imports.go b/tools/go_generics/imports.go
deleted file mode 100644
index 148dc7216..000000000
--- a/tools/go_generics/imports.go
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// 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 (
-	"bytes"
-	"fmt"
-	"go/ast"
-	"go/format"
-	"go/parser"
-	"go/token"
-	"strconv"
-
-	"gvisor.dev/gvisor/tools/go_generics/globals"
-)
-
-type importedPackage struct {
-	newName string
-	path    string
-}
-
-// updateImportIdent modifies the given import identifier with the new name
-// stored in the used map. If the identifier doesn't exist in the used map yet,
-// a new name is generated and inserted into the map.
-func updateImportIdent(orig string, imports mapValue, id *ast.Ident, used map[string]*importedPackage) error {
-	importName := id.Name
-
-	// If the name is already in the table, just use the new name.
-	m := used[importName]
-	if m != nil {
-		id.Name = m.newName
-		return nil
-	}
-
-	// Create a new entry in the used map.
-	path := imports[importName]
-	if path == "" {
-		return fmt.Errorf("Unknown path to package '%s', used in '%s'", importName, orig)
-	}
-
-	m = &importedPackage{
-		newName: fmt.Sprintf("__generics_imported%d", len(used)),
-		path:    strconv.Quote(path),
-	}
-	used[importName] = m
-
-	id.Name = m.newName
-
-	return nil
-}
-
-// convertExpression creates a new string that is a copy of the input one with
-// all imports references renamed to the names in the "used" map. If the
-// referenced import isn't in "used" yet, a new one is created based on the path
-// in "imports" and stored in "used". For example, if string s is
-// "math.MaxUint32-math.MaxUint16+10", it would be converted to
-// "x.MaxUint32-x.MathUint16+10", where x is a generated name.
-func convertExpression(s string, imports mapValue, used map[string]*importedPackage) (string, error) {
-	// Parse the expression in the input string.
-	expr, err := parser.ParseExpr(s)
-	if err != nil {
-		return "", fmt.Errorf("Unable to parse \"%s\": %v", s, err)
-	}
-
-	// Go through the AST and update references.
-	var retErr error
-	ast.Inspect(expr, func(n ast.Node) bool {
-		switch x := n.(type) {
-		case *ast.SelectorExpr:
-			if id := globals.GetIdent(x.X); id != nil {
-				if err := updateImportIdent(s, imports, id, used); err != nil {
-					retErr = err
-				}
-				return false
-			}
-		}
-		return true
-	})
-	if retErr != nil {
-		return "", retErr
-	}
-
-	// Convert the modified AST back to a string.
-	fset := token.NewFileSet()
-	var buf bytes.Buffer
-	if err := format.Node(&buf, fset, expr); err != nil {
-		return "", err
-	}
-
-	return string(buf.Bytes()), nil
-}
-
-// updateImports replaces all maps in the input slice with copies where the
-// mapped values have had all references to imported packages renamed to
-// generated names. It also returns an import declaration for all the renamed
-// import packages.
-//
-// For example, if the input maps contains A=math.B and C=math.D, the updated
-// maps will instead contain A=__generics_imported0.B and
-// C=__generics_imported0.C, and the 'import __generics_imported0 "math"' would
-// be returned as the import declaration.
-func updateImports(maps []mapValue, imports mapValue) (ast.Decl, error) {
-	importsUsed := make(map[string]*importedPackage)
-
-	// Update all maps.
-	for i, m := range maps {
-		newMap := make(mapValue)
-		for n, e := range m {
-			updated, err := convertExpression(e, imports, importsUsed)
-			if err != nil {
-				return nil, err
-			}
-
-			newMap[n] = updated
-		}
-		maps[i] = newMap
-	}
-
-	// Nothing else to do if no imports are used in the expressions.
-	if len(importsUsed) == 0 {
-		return nil, nil
-	}
-
-	// Create spec array for each new import.
-	specs := make([]ast.Spec, 0, len(importsUsed))
-	for _, i := range importsUsed {
-		specs = append(specs, &ast.ImportSpec{
-			Name: &ast.Ident{Name: i.newName},
-			Path: &ast.BasicLit{Value: i.path},
-		})
-	}
-
-	return &ast.GenDecl{
-		Tok:    token.IMPORT,
-		Specs:  specs,
-		Lparen: token.NoPos + 1,
-	}, nil
-}