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// 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)
}
}
}
}
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