source: code/trunk/vendor/github.com/eknkc/amber/parser/nodes.go@ 67

Last change on this file since 67 was 67, checked in by Izuru Yakumo, 23 months ago

Use vendored modules

Signed-off-by: Izuru Yakumo <yakumo.izuru@…>
File size: 5.1 KB
Line 
1package parser
2
3import (
4 "regexp"
5 "strings"
6)
7
8var selfClosingTags = [...]string{
9 "meta",
10 "img",
11 "link",
12 "input",
13 "source",
14 "area",
15 "base",
16 "col",
17 "br",
18 "hr",
19}
20
21var doctypes = map[string]string{
22 "5": `<!DOCTYPE html>`,
23 "default": `<!DOCTYPE html>`,
24 "xml": `<?xml version="1.0" encoding="utf-8" ?>`,
25 "transitional": `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">`,
26 "strict": `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">`,
27 "frameset": `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">`,
28 "1.1": `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">`,
29 "basic": `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd">`,
30 "mobile": `<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.2//EN" "http://www.openmobilealliance.org/tech/DTD/xhtml-mobile12.dtd">`,
31}
32
33type Node interface {
34 Pos() SourcePosition
35}
36
37type SourcePosition struct {
38 LineNum int
39 ColNum int
40 TokenLength int
41 Filename string
42}
43
44func (s *SourcePosition) Pos() SourcePosition {
45 return *s
46}
47
48type Doctype struct {
49 SourcePosition
50 Value string
51}
52
53func newDoctype(value string) *Doctype {
54 dt := new(Doctype)
55 dt.Value = value
56 return dt
57}
58
59func (d *Doctype) String() string {
60 if defined := doctypes[d.Value]; len(defined) != 0 {
61 return defined
62 }
63
64 return `<!DOCTYPE ` + d.Value + `>`
65}
66
67type Comment struct {
68 SourcePosition
69 Value string
70 Block *Block
71 Silent bool
72}
73
74func newComment(value string) *Comment {
75 dt := new(Comment)
76 dt.Value = value
77 dt.Block = nil
78 dt.Silent = false
79 return dt
80}
81
82type Text struct {
83 SourcePosition
84 Value string
85 Raw bool
86}
87
88func newText(value string, raw bool) *Text {
89 dt := new(Text)
90 dt.Value = value
91 dt.Raw = raw
92 return dt
93}
94
95type Block struct {
96 SourcePosition
97 Children []Node
98}
99
100func newBlock() *Block {
101 block := new(Block)
102 block.Children = make([]Node, 0)
103 return block
104}
105
106func (b *Block) push(node Node) {
107 b.Children = append(b.Children, node)
108}
109
110func (b *Block) pushFront(node Node) {
111 b.Children = append([]Node{node}, b.Children...)
112}
113
114func (b *Block) CanInline() bool {
115 if len(b.Children) == 0 {
116 return true
117 }
118
119 allText := true
120
121 for _, child := range b.Children {
122 if txt, ok := child.(*Text); !ok || txt.Raw {
123 allText = false
124 break
125 }
126 }
127
128 return allText
129}
130
131const (
132 NamedBlockDefault = iota
133 NamedBlockAppend
134 NamedBlockPrepend
135)
136
137type NamedBlock struct {
138 Block
139 Name string
140 Modifier int
141}
142
143func newNamedBlock(name string) *NamedBlock {
144 bb := new(NamedBlock)
145 bb.Name = name
146 bb.Block.Children = make([]Node, 0)
147 bb.Modifier = NamedBlockDefault
148 return bb
149}
150
151type Attribute struct {
152 SourcePosition
153 Name string
154 Value string
155 IsRaw bool
156 Condition string
157}
158
159type Tag struct {
160 SourcePosition
161 Block *Block
162 Name string
163 IsInterpolated bool
164 Attributes []Attribute
165}
166
167func newTag(name string) *Tag {
168 tag := new(Tag)
169 tag.Block = nil
170 tag.Name = name
171 tag.Attributes = make([]Attribute, 0)
172 tag.IsInterpolated = false
173 return tag
174
175}
176
177func (t *Tag) IsSelfClosing() bool {
178 for _, tag := range selfClosingTags {
179 if tag == t.Name {
180 return true
181 }
182 }
183
184 return false
185}
186
187func (t *Tag) IsRawText() bool {
188 return t.Name == "style" || t.Name == "script"
189}
190
191type Condition struct {
192 SourcePosition
193 Positive *Block
194 Negative *Block
195 Expression string
196}
197
198func newCondition(exp string) *Condition {
199 cond := new(Condition)
200 cond.Expression = exp
201 return cond
202}
203
204type Each struct {
205 SourcePosition
206 X string
207 Y string
208 Expression string
209 Block *Block
210}
211
212func newEach(exp string) *Each {
213 each := new(Each)
214 each.Expression = exp
215 return each
216}
217
218type Assignment struct {
219 SourcePosition
220 X string
221 Expression string
222}
223
224func newAssignment(x, expression string) *Assignment {
225 assgn := new(Assignment)
226 assgn.X = x
227 assgn.Expression = expression
228 return assgn
229}
230
231type Mixin struct {
232 SourcePosition
233 Block *Block
234 Name string
235 Args []string
236}
237
238func newMixin(name, args string) *Mixin {
239 mixin := new(Mixin)
240 mixin.Name = name
241
242 delExp := regexp.MustCompile(`,\s`)
243 mixin.Args = delExp.Split(args, -1)
244
245 for i := 0; i < len(mixin.Args); i++ {
246 mixin.Args[i] = strings.TrimSpace(mixin.Args[i])
247 if mixin.Args[i] == "" {
248 mixin.Args = append(mixin.Args[:i], mixin.Args[i+1:]...)
249 i--
250 }
251 }
252
253 return mixin
254}
255
256type MixinCall struct {
257 SourcePosition
258 Name string
259 Args []string
260}
261
262func newMixinCall(name, args string) *MixinCall {
263 mixinCall := new(MixinCall)
264 mixinCall.Name = name
265
266 if args != "" {
267 const t = "%s"
268 quoteExp := regexp.MustCompile(`"(.*?)"`)
269 delExp := regexp.MustCompile(`,\s`)
270
271 quotes := quoteExp.FindAllString(args, -1)
272 replaced := quoteExp.ReplaceAllString(args, t)
273 mixinCall.Args = delExp.Split(replaced, -1)
274
275 qi := 0
276 for i, arg := range mixinCall.Args {
277 if arg == t {
278 mixinCall.Args[i] = quotes[qi]
279 qi++
280 }
281 }
282 }
283
284 return mixinCall
285}
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