This repository has been archived by the owner on Feb 15, 2022. It is now read-only.
forked from aymerick/raymond
-
Notifications
You must be signed in to change notification settings - Fork 0
/
print.go
279 lines (214 loc) · 4.83 KB
/
print.go
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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
package ast
import (
"fmt"
"strings"
)
// printVisitor implements the Visitor interface to print a AST.
type printVisitor struct {
buf string
depth int
original bool
inBlock bool
}
func newPrintVisitor() *printVisitor {
return &printVisitor{}
}
// Print returns a string representation of given AST, that can be used for debugging purpose.
func Print(node Node) string {
visitor := newPrintVisitor()
node.Accept(visitor)
return visitor.output()
}
func (v *printVisitor) output() string {
return v.buf
}
func (v *printVisitor) indent() {
for i := 0; i < v.depth; {
v.buf += " "
i++
}
}
func (v *printVisitor) str(val string) {
v.buf += val
}
func (v *printVisitor) nl() {
v.str("\n")
}
func (v *printVisitor) line(val string) {
v.indent()
v.str(val)
v.nl()
}
//
// Visitor interface
//
// Statements
// VisitProgram implements corresponding Visitor interface method
func (v *printVisitor) VisitProgram(node *Program) interface{} {
if len(node.BlockParams) > 0 {
v.line("BLOCK PARAMS: [ " + strings.Join(node.BlockParams, " ") + " ]")
}
for _, n := range node.Body {
n.Accept(v)
}
return nil
}
// VisitMustache implements corresponding Visitor interface method
func (v *printVisitor) VisitMustache(node *MustacheStatement) interface{} {
v.indent()
v.str("{{ ")
node.Expression.Accept(v)
v.str(" }}")
v.nl()
return nil
}
// VisitBlock implements corresponding Visitor interface method
func (v *printVisitor) VisitBlock(node *BlockStatement) interface{} {
v.inBlock = true
v.line("BLOCK:")
v.depth++
node.Expression.Accept(v)
if node.Program != nil {
v.line("PROGRAM:")
v.depth++
node.Program.Accept(v)
v.depth--
}
if node.Inverse != nil {
// if node.Program != nil {
// v.depth++
// }
v.line("{{^}}")
v.depth++
node.Inverse.Accept(v)
v.depth--
// if node.Program != nil {
// v.depth--
// }
}
v.inBlock = false
return nil
}
// VisitPartial implements corresponding Visitor interface method
func (v *printVisitor) VisitPartial(node *PartialStatement) interface{} {
v.indent()
v.str("{{> PARTIAL:")
v.original = true
node.Name.Accept(v)
v.original = false
if len(node.Params) > 0 {
v.str(" ")
node.Params[0].Accept(v)
}
// hash
if node.Hash != nil {
v.str(" ")
node.Hash.Accept(v)
}
v.str(" }}")
v.nl()
return nil
}
// VisitContent implements corresponding Visitor interface method
func (v *printVisitor) VisitContent(node *ContentStatement) interface{} {
v.line("CONTENT[ '" + node.Value + "' ]")
return nil
}
// VisitComment implements corresponding Visitor interface method
func (v *printVisitor) VisitComment(node *CommentStatement) interface{} {
v.line("{{! '" + node.Value + "' }}")
return nil
}
// Expressions
// VisitExpression implements corresponding Visitor interface method
func (v *printVisitor) VisitExpression(node *Expression) interface{} {
if v.inBlock {
v.indent()
}
// path
node.Path.Accept(v)
// params
v.str(" [")
for i, n := range node.Params {
if i > 0 {
v.str(", ")
}
n.Accept(v)
}
v.str("]")
// hash
if node.Hash != nil {
v.str(" ")
node.Hash.Accept(v)
}
if v.inBlock {
v.nl()
}
return nil
}
// VisitSubExpression implements corresponding Visitor interface method
func (v *printVisitor) VisitSubExpression(node *SubExpression) interface{} {
node.Expression.Accept(v)
return nil
}
// VisitPath implements corresponding Visitor interface method
func (v *printVisitor) VisitPath(node *PathExpression) interface{} {
if v.original {
v.str(node.Original)
} else {
path := strings.Join(node.Parts, "/")
result := ""
if node.Data {
result += "@"
}
v.str(result + "PATH:" + path)
}
return nil
}
// Literals
// VisitString implements corresponding Visitor interface method
func (v *printVisitor) VisitString(node *StringLiteral) interface{} {
if v.original {
v.str(node.Value)
} else {
v.str("\"" + node.Value + "\"")
}
return nil
}
// VisitBoolean implements corresponding Visitor interface method
func (v *printVisitor) VisitBoolean(node *BooleanLiteral) interface{} {
if v.original {
v.str(node.Original)
} else {
v.str(fmt.Sprintf("BOOLEAN{%s}", node.Canonical()))
}
return nil
}
// VisitNumber implements corresponding Visitor interface method
func (v *printVisitor) VisitNumber(node *NumberLiteral) interface{} {
if v.original {
v.str(node.Original)
} else {
v.str(fmt.Sprintf("NUMBER{%s}", node.Canonical()))
}
return nil
}
// Miscellaneous
// VisitHash implements corresponding Visitor interface method
func (v *printVisitor) VisitHash(node *Hash) interface{} {
v.str("HASH{")
for i, p := range node.Pairs {
if i > 0 {
v.str(", ")
}
p.Accept(v)
}
v.str("}")
return nil
}
// VisitHashPair implements corresponding Visitor interface method
func (v *printVisitor) VisitHashPair(node *HashPair) interface{} {
v.str(node.Key + "=")
node.Val.Accept(v)
return nil
}