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node_modules/css-tree/lib/syntax/node/StyleSheet.js

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+import {
+    WhiteSpace,
+    Comment,
+    AtKeyword,
+    CDO,
+    CDC
+} from '../../tokenizer/index.js';
+
+const EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
+
+function consumeRaw(startToken) {
+    return this.Raw(startToken, null, false);
+}
+
+export const name = 'StyleSheet';
+export const walkContext = 'stylesheet';
+export const structure = {
+    children: [[
+        'Comment',
+        'CDO',
+        'CDC',
+        'Atrule',
+        'Rule',
+        'Raw'
+    ]]
+};
+
+export function parse() {
+    const start = this.tokenStart;
+    const children = this.createList();
+    let child;
+
+    scan:
+    while (!this.eof) {
+        switch (this.tokenType) {
+            case WhiteSpace:
+                this.next();
+                continue;
+
+            case Comment:
+                // ignore comments except exclamation comments (i.e. /*! .. */) on top level
+                if (this.charCodeAt(this.tokenStart + 2) !== EXCLAMATIONMARK) {
+                    this.next();
+                    continue;
+                }
+
+                child = this.Comment();
+                break;
+
+            case CDO: // <!--
+                child = this.CDO();
+                break;
+
+            case CDC: // -->
+                child = this.CDC();
+                break;
+
+            // CSS Syntax Module Level 3
+            // §2.2 Error handling
+            // At the "top level" of a stylesheet, an <at-keyword-token> starts an at-rule.
+            case AtKeyword:
+                child = this.parseWithFallback(this.Atrule, consumeRaw);
+                break;
+
+            // Anything else starts a qualified rule ...
+            default:
+                child = this.parseWithFallback(this.Rule, consumeRaw);
+        }
+
+        children.push(child);
+    }
+
+    return {
+        type: 'StyleSheet',
+        loc: this.getLocation(start, this.tokenStart),
+        children
+    };
+}
+
+export function generate(node) {
+    this.children(node);
+}