feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

1 files changed, 147 insertions, 0 deletions

diff --git a/vanilla/node_modules/css-tree/lib/syntax/node/AttributeSelector.js b/vanilla/node_modules/css-tree/lib/syntax/node/AttributeSelector.js
new file mode 100644
index 0000000..8578dad
--- /dev/null
+++ b/vanilla/node_modules/css-tree/lib/syntax/node/AttributeSelector.js
@@ -0,0 +1,147 @@
+import {
+    Ident,
+    String as StringToken,
+    Delim,
+    LeftSquareBracket,
+    RightSquareBracket
+} from '../../tokenizer/index.js';
+
+const DOLLARSIGN = 0x0024;       // U+0024 DOLLAR SIGN ($)
+const ASTERISK = 0x002A;         // U+002A ASTERISK (*)
+const EQUALSSIGN = 0x003D;       // U+003D EQUALS SIGN (=)
+const CIRCUMFLEXACCENT = 0x005E; // U+005E (^)
+const VERTICALLINE = 0x007C;     // U+007C VERTICAL LINE (|)
+const TILDE = 0x007E;            // U+007E TILDE (~)
+
+function getAttributeName() {
+    if (this.eof) {
+        this.error('Unexpected end of input');
+    }
+
+    const start = this.tokenStart;
+    let expectIdent = false;
+
+    if (this.isDelim(ASTERISK)) {
+        expectIdent = true;
+        this.next();
+    } else if (!this.isDelim(VERTICALLINE)) {
+        this.eat(Ident);
+    }
+
+    if (this.isDelim(VERTICALLINE)) {
+        if (this.charCodeAt(this.tokenStart + 1) !== EQUALSSIGN) {
+            this.next();
+            this.eat(Ident);
+        } else if (expectIdent) {
+            this.error('Identifier is expected', this.tokenEnd);
+        }
+    } else if (expectIdent) {
+        this.error('Vertical line is expected');
+    }
+
+    return {
+        type: 'Identifier',
+        loc: this.getLocation(start, this.tokenStart),
+        name: this.substrToCursor(start)
+    };
+}
+
+function getOperator() {
+    const start = this.tokenStart;
+    const code = this.charCodeAt(start);
+
+    if (code !== EQUALSSIGN &&        // =
+        code !== TILDE &&             // ~=
+        code !== CIRCUMFLEXACCENT &&  // ^=
+        code !== DOLLARSIGN &&        // $=
+        code !== ASTERISK &&          // *=
+        code !== VERTICALLINE         // |=
+    ) {
+        this.error('Attribute selector (=, ~=, ^=, $=, *=, |=) is expected');
+    }
+
+    this.next();
+
+    if (code !== EQUALSSIGN) {
+        if (!this.isDelim(EQUALSSIGN)) {
+            this.error('Equal sign is expected');
+        }
+
+        this.next();
+    }
+
+    return this.substrToCursor(start);
+}
+
+// '[' <wq-name> ']'
+// '[' <wq-name> <attr-matcher> [ <string-token> | <ident-token> ] <attr-modifier>? ']'
+export const name = 'AttributeSelector';
+export const structure = {
+    name: 'Identifier',
+    matcher: [String, null],
+    value: ['String', 'Identifier', null],
+    flags: [String, null]
+};
+
+export function parse() {
+    const start = this.tokenStart;
+    let name;
+    let matcher = null;
+    let value = null;
+    let flags = null;
+
+    this.eat(LeftSquareBracket);
+    this.skipSC();
+
+    name = getAttributeName.call(this);
+    this.skipSC();
+
+    if (this.tokenType !== RightSquareBracket) {
+        // avoid case `[name i]`
+        if (this.tokenType !== Ident) {
+            matcher = getOperator.call(this);
+
+            this.skipSC();
+
+            value = this.tokenType === StringToken
+                ? this.String()
+                : this.Identifier();
+
+            this.skipSC();
+        }
+
+        // attribute flags
+        if (this.tokenType === Ident) {
+            flags = this.consume(Ident);
+
+            this.skipSC();
+        }
+    }
+
+    this.eat(RightSquareBracket);
+
+    return {
+        type: 'AttributeSelector',
+        loc: this.getLocation(start, this.tokenStart),
+        name,
+        matcher,
+        value,
+        flags
+    };
+}
+
+export function generate(node) {
+    this.token(Delim, '[');
+    this.node(node.name);
+
+    if (node.matcher !== null) {
+        this.tokenize(node.matcher);
+        this.node(node.value);
+    }
+
+    if (node.flags !== null) {
+        this.token(Ident, node.flags);
+    }
+
+    this.token(Delim, ']');
+}