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Revert "tpl: Support text/template/parse API change in go1.11"

Browse source 
Go developers have undone the breaking API changes
in the following commit:

commit bedfa4e1c37bd08063865da628f242d27ca06ec4
Author: Daniel Theophanes <kardianos@gmail.com>
Date:   Thu Jun 21 10:41:26 2018 -0700

    text/template/parse: undo breaking API changes

    golang.org/cl/84480 altered the API for the parse package for
    clarity and consistency. However, the changes also broke the
    API for consumers of the package. This CL reverts the API
    to the previous spelling, adding only a single new exported
    symbol.

    Fixes #25968

    Change-Id: Ieb81054b61eeac7df3bc3864ef446df43c26b80f
    Reviewed-on: https://go-review.googlesource.com/120355
    Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
    Reviewed-by: Rob Pike <r@golang.org>
    Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
    TryBot-Result: Gobot Gobot <gobot@golang.org>

See https://github.com/golang/go/issues/25968

This reverts commit 9f27091e10.

Closes #4784
Fixes #4873
This commit is contained in:
Anthony Fok 2018-06-23 15:07:52 -06:00
parent dc7bc7b4d2
commit 3d5928889a
No known key found for this signature in database
GPG key ID: EA2500B412C59ACF
3 changed files with 48 additions and 136 deletions
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48
tpl/tplimpl/template_ast_transformers.go
View file

@ -91,6 +91,54 @@ func applyTemplateTransformers(templ *parse.Tree, lookupFn func(name string) *pa
return nil
}
// paramsKeysToLower is made purposely non-generic to make it not so tempting
// to do more of these hard-to-maintain AST transformations.
func (c *templateContext) paramsKeysToLower(n parse.Node) {
switch x := n.(type) {
case *parse.ListNode:
if x != nil {
c.paramsKeysToLowerForNodes(x.Nodes...)
}
case *parse.ActionNode:
c.paramsKeysToLowerForNodes(x.Pipe)
case *parse.IfNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.WithNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.RangeNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.TemplateNode:
subTempl := c.getIfNotVisited(x.Name)
if subTempl != nil {
c.paramsKeysToLowerForNodes(subTempl.Root)
}
case *parse.PipeNode:
for i, elem := range x.Decl {
if len(x.Cmds) > i {
// maps $site => .Site etc.
c.decl[elem.Ident[0]] = x.Cmds[i].String()
}
}
for _, cmd := range x.Cmds {
c.paramsKeysToLower(cmd)
}
case *parse.CommandNode:
for _, elem := range x.Args {
switch an := elem.(type) {
case *parse.FieldNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.VariableNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.PipeNode:
c.paramsKeysToLower(an)
}
}
}
}
func (c *templateContext) paramsKeysToLowerForNodes(nodes ...parse.Node) {
for _, node := range nodes {
c.paramsKeysToLower(node)

68
tpl/tplimpl/template_ast_transformers_go1_10.go
View file

@ -1,68 +0,0 @@
// Copyright 2016 The Hugo Authors. 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.
// +build !go1.11
package tplimpl
import (
"text/template/parse"
)
// paramsKeysToLower is made purposely non-generic to make it not so tempting
// to do more of these hard-to-maintain AST transformations.
func (c *templateContext) paramsKeysToLower(n parse.Node) {
switch x := n.(type) {
case *parse.ListNode:
if x != nil {
c.paramsKeysToLowerForNodes(x.Nodes...)
}
case *parse.ActionNode:
c.paramsKeysToLowerForNodes(x.Pipe)
case *parse.IfNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.WithNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.RangeNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.TemplateNode:
subTempl := c.getIfNotVisited(x.Name)
if subTempl != nil {
c.paramsKeysToLowerForNodes(subTempl.Root)
}
case *parse.PipeNode:
for i, elem := range x.Decl {
if len(x.Cmds) > i {
// maps $site => .Site etc.
c.decl[elem.Ident[0]] = x.Cmds[i].String()
}
}
for _, cmd := range x.Cmds {
c.paramsKeysToLower(cmd)
}
case *parse.CommandNode:
for _, elem := range x.Args {
switch an := elem.(type) {
case *parse.FieldNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.VariableNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.PipeNode:
c.paramsKeysToLower(an)
}
}
}
}

68
tpl/tplimpl/template_ast_transformers_go1_11.go
View file

@ -1,68 +0,0 @@
// Copyright 2016 The Hugo Authors. 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.
// +build go1.11
package tplimpl
import (
"text/template/parse"
)
// paramsKeysToLower is made purposely non-generic to make it not so tempting
// to do more of these hard-to-maintain AST transformations.
func (c *templateContext) paramsKeysToLower(n parse.Node) {
switch x := n.(type) {
case *parse.ListNode:
if x != nil {
c.paramsKeysToLowerForNodes(x.Nodes...)
}
case *parse.ActionNode:
c.paramsKeysToLowerForNodes(x.Pipe)
case *parse.IfNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.WithNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.RangeNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.TemplateNode:
subTempl := c.getIfNotVisited(x.Name)
if subTempl != nil {
c.paramsKeysToLowerForNodes(subTempl.Root)
}
case *parse.PipeNode:
for i, elem := range x.Vars {
if len(x.Cmds) > i {
// maps $site => .Site etc.
c.decl[elem.Ident[0]] = x.Cmds[i].String()
}
}
for _, cmd := range x.Cmds {
c.paramsKeysToLower(cmd)
}
case *parse.CommandNode:
for _, elem := range x.Args {
switch an := elem.(type) {
case *parse.FieldNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.AssignNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.PipeNode:
c.paramsKeysToLower(an)
}
}
}
}