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
|
const {
doc: {
builders: { concat, hardline },
},
} = require('prettier');
const { parse } = require('astro/parser');
/** @type {Partial<import('prettier').SupportLanguage>[]} */
module.exports.languages = [
{
name: 'astro',
parsers: ['astro'],
extensions: ['.astro'],
vscodeLanguageIds: ['astro'],
},
];
/** @type {Record<string, import('prettier').Parser>} */
module.exports.parsers = {
astro: {
parse: (text) => {
let { html, css, module: frontmatter } = parse(text);
html = html ? { ...html, text: text.slice(html.start, html.end), isRoot: true } : null;
return [frontmatter, html, css].filter((v) => v);
},
locStart(node) {
return node.start;
},
locEnd(node) {
return node.end;
},
astFormat: 'astro-ast',
},
'astro-expression': {
parse: (text, parsers) => {
return { text };
},
locStart(node) {
return node.start;
},
locEnd(node) {
return node.end;
},
astFormat: 'astro-expression',
}
};
const findExpressionsInAST = (node, collect = []) => {
if (node.type === 'MustacheTag') {
return collect.concat(node);
}
if (node.children) {
collect.push(...[].concat(...node.children.map(child => findExpressionsInAST(child))));
}
return collect;
}
const formatExpression = ({ expression: { codeStart, codeEnd, children }}, text, options) => {
if (children.length === 0) {
if ([`'`, `"`].includes(codeStart[0])) {
return `<script $ lang="ts">${codeStart}${codeEnd}</script>`
}
return `{${codeStart}${codeEnd}}`;
}
return `<script $ lang="ts">${text}</script>`;
}
const isAstroScript = (node) => node.type === 'concat' && node.parts[0] === '<script' && node.parts[1].type === 'indent' && node.parts[1].contents.parts.find(v => v === '$');
const walkDoc = (doc) => {
let inAstroScript = false;
const recurse = (node, { parent }) => {
if (node.type === 'concat') {
if (isAstroScript(node)) {
inAstroScript = true;
parent.contents = { type: 'concat', parts: ['{'] };
}
return node.parts.map(part => recurse(part, { parent: node }));
}
if (inAstroScript) {
if (node.type === 'break-parent') {
parent.parts = parent.parts.filter(part => !['break-parent', 'line'].includes(part.type));
}
if (node.type === 'indent') {
parent.parts = parent.parts.map(part => {
if (part.type !== 'indent') return part;
return {
type: 'concat',
parts: [part.contents]
}
})
}
if (typeof node === 'string' && node.endsWith(';')) {
parent.parts = parent.parts.map(part => {
if (typeof part === 'string' && part.endsWith(';')) return part.slice(0, -1);
return part;
});
}
if (node === '</script>') {
parent.parts = parent.parts.map(part => part === '</script>' ? '}' : part);
inAstroScript = false;
}
}
if (['group', 'indent'].includes(node.type)) {
return recurse(node.contents, { parent: node });
}
}
recurse(doc, { parent: null });
}
/** @type {Record<string, import('prettier').Printer>} */
module.exports.printers = {
'astro-ast': {
print(path, opts, print) {
const node = path.getValue();
if (Array.isArray(node)) return concat(path.map(print));
if (node.type === 'Fragment') return concat(path.map(print, 'children'));
return node;
},
embed(path, print, textToDoc, options) {
const node = path.getValue();
if (node.type === 'Script' && node.context === 'setup') {
return concat(['---', hardline, textToDoc(node.content, { ...options, parser: 'typescript' }), '---', hardline, hardline]);
}
if (node.type === 'Fragment' && node.isRoot) {
const expressions = findExpressionsInAST(node);
if (expressions.length > 0) {
const parts = [].concat(...expressions.map((expr, i, all) => {
const prev = all[i - 1];
const start = node.text.slice((prev?.end ?? node.start) - node.start, expr.start - node.start);
const exprText = formatExpression(expr, node.text.slice(expr.start - node.start + 1, expr.end - node.start - 1), options);
if (i === all.length - 1) {
const end = node.text.slice(expr.end - node.start);
return [start, exprText, end]
}
return [start, exprText]
}));
const html = parts.join('\n');
const doc = textToDoc(html, { parser: 'html' });
walkDoc(doc);
return doc;
}
return textToDoc(node.text, { parser: 'html' });
}
return null;
},
},
};
|
