1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
// Copyright 2017-present The Hugo Authors. All rights reserved.
//
// Portions Copyright The Go 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 tplimpl
import (
"reflect"
"strings"
"github.com/gohugoio/hugo/tpl"
"github.com/gohugoio/hugo/common/maps"
template "github.com/gohugoio/hugo/tpl/internal/go_templates/htmltemplate"
texttemplate "github.com/gohugoio/hugo/tpl/internal/go_templates/texttemplate"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/tpl/internal"
// Init the namespaces
_ "github.com/gohugoio/hugo/tpl/cast"
_ "github.com/gohugoio/hugo/tpl/collections"
_ "github.com/gohugoio/hugo/tpl/compare"
_ "github.com/gohugoio/hugo/tpl/crypto"
_ "github.com/gohugoio/hugo/tpl/data"
_ "github.com/gohugoio/hugo/tpl/encoding"
_ "github.com/gohugoio/hugo/tpl/fmt"
_ "github.com/gohugoio/hugo/tpl/hugo"
_ "github.com/gohugoio/hugo/tpl/images"
_ "github.com/gohugoio/hugo/tpl/inflect"
_ "github.com/gohugoio/hugo/tpl/lang"
_ "github.com/gohugoio/hugo/tpl/math"
_ "github.com/gohugoio/hugo/tpl/os"
_ "github.com/gohugoio/hugo/tpl/partials"
_ "github.com/gohugoio/hugo/tpl/path"
_ "github.com/gohugoio/hugo/tpl/reflect"
_ "github.com/gohugoio/hugo/tpl/resources"
_ "github.com/gohugoio/hugo/tpl/safe"
_ "github.com/gohugoio/hugo/tpl/site"
_ "github.com/gohugoio/hugo/tpl/strings"
_ "github.com/gohugoio/hugo/tpl/templates"
_ "github.com/gohugoio/hugo/tpl/time"
_ "github.com/gohugoio/hugo/tpl/transform"
_ "github.com/gohugoio/hugo/tpl/urls"
)
var _ texttemplate.ExecHelper = (*templateExecHelper)(nil)
var zero reflect.Value
type templateExecHelper struct {
funcs map[string]reflect.Value
}
func (t *templateExecHelper) GetFunc(tmpl texttemplate.Preparer, name string) (reflect.Value, bool) {
if fn, found := t.funcs[name]; found {
return fn, true
}
return zero, false
}
func (t *templateExecHelper) GetMapValue(tmpl texttemplate.Preparer, receiver, key reflect.Value) (reflect.Value, bool) {
if params, ok := receiver.Interface().(maps.Params); ok {
// Case insensitive.
keystr := strings.ToLower(key.String())
v, found := params[keystr]
if !found {
return zero, false
}
return reflect.ValueOf(v), true
}
v := receiver.MapIndex(key)
return v, v.IsValid()
}
func (t *templateExecHelper) GetMethod(tmpl texttemplate.Preparer, receiver reflect.Value, name string) (method reflect.Value, firstArg reflect.Value) {
// This is a hot path and receiver.MethodByName really shows up in the benchmarks.
// Page.Render is the only method with a WithTemplateInfo as of now, so let's just
// check that for now.
// TODO(bep) find a more flexible, but still fast, way.
if name == "Render" {
if info, ok := tmpl.(tpl.Info); ok {
if m := receiver.MethodByName(name + "WithTemplateInfo"); m.IsValid() {
return m, reflect.ValueOf(info)
}
}
}
return receiver.MethodByName(name), zero
}
func newTemplateExecuter(d *deps.Deps) (texttemplate.Executer, map[string]reflect.Value) {
funcs := createFuncMap(d)
funcsv := make(map[string]reflect.Value)
for k, v := range funcs {
vv := reflect.ValueOf(v)
funcsv[k] = vv
}
// Duplicate Go's internal funcs here for faster lookups.
for k, v := range template.GoFuncs {
if _, exists := funcsv[k]; !exists {
vv, ok := v.(reflect.Value)
if !ok {
vv = reflect.ValueOf(v)
}
funcsv[k] = vv
}
}
for k, v := range texttemplate.GoFuncs {
if _, exists := funcsv[k]; !exists {
funcsv[k] = v
}
}
exeHelper := &templateExecHelper{
funcs: funcsv,
}
return texttemplate.NewExecuter(
exeHelper,
), funcsv
}
func createFuncMap(d *deps.Deps) map[string]interface{} {
funcMap := template.FuncMap{}
// Merge the namespace funcs
for _, nsf := range internal.TemplateFuncsNamespaceRegistry {
ns := nsf(d)
if _, exists := funcMap[ns.Name]; exists {
panic(ns.Name + " is a duplicate template func")
}
funcMap[ns.Name] = ns.Context
for _, mm := range ns.MethodMappings {
for _, alias := range mm.Aliases {
if _, exists := funcMap[alias]; exists {
panic(alias + " is a duplicate template func")
}
funcMap[alias] = mm.Method
}
}
}
if d.OverloadedTemplateFuncs != nil {
for k, v := range d.OverloadedTemplateFuncs {
funcMap[k] = v
}
}
return funcMap
}
|