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

1 files changed, 120 insertions, 0 deletions

diff --git a/vanilla/node_modules/css-tree/cjs/syntax/node/Condition.cjs b/vanilla/node_modules/css-tree/cjs/syntax/node/Condition.cjs
new file mode 100644
index 0000000..af6a2ec
--- /dev/null
+++ b/vanilla/node_modules/css-tree/cjs/syntax/node/Condition.cjs
@@ -0,0 +1,120 @@
+'use strict';
+
+const types = require('../../tokenizer/types.cjs');
+
+const likelyFeatureToken = new Set([types.Colon, types.RightParenthesis, types.EOF]);
+
+const name = 'Condition';
+const structure = {
+    kind: String,
+    children: [[
+        'Identifier',
+        'Feature',
+        'FeatureFunction',
+        'FeatureRange',
+        'SupportsDeclaration'
+    ]]
+};
+
+function featureOrRange(kind) {
+    if (this.lookupTypeNonSC(1) === types.Ident &&
+        likelyFeatureToken.has(this.lookupTypeNonSC(2))) {
+        return this.Feature(kind);
+    }
+
+    return this.FeatureRange(kind);
+}
+
+const parentheses = {
+    media: featureOrRange,
+    container: featureOrRange,
+    supports() {
+        return this.SupportsDeclaration();
+    }
+};
+
+function parse(kind = 'media') {
+    const children = this.createList();
+
+    scan: while (!this.eof) {
+        switch (this.tokenType) {
+            case types.Comment:
+            case types.WhiteSpace:
+                this.next();
+                continue;
+
+            case types.Ident:
+                children.push(this.Identifier());
+                break;
+
+            case types.LeftParenthesis: {
+                let term = this.parseWithFallback(
+                    () => parentheses[kind].call(this, kind),
+                    () => null
+                );
+
+                if (!term) {
+                    term = this.parseWithFallback(
+                        () => {
+                            this.eat(types.LeftParenthesis);
+                            const res = this.Condition(kind);
+                            this.eat(types.RightParenthesis);
+                            return res;
+                        },
+                        () => {
+                            return this.GeneralEnclosed(kind);
+                        }
+                    );
+                }
+
+                children.push(term);
+                break;
+            }
+
+            case types.Function: {
+                let term = this.parseWithFallback(
+                    () => this.FeatureFunction(kind),
+                    () => null
+                );
+
+                if (!term) {
+                    term = this.GeneralEnclosed(kind);
+                }
+
+                children.push(term);
+                break;
+            }
+
+            default:
+                break scan;
+        }
+    }
+
+    if (children.isEmpty) {
+        this.error('Condition is expected');
+    }
+
+    return {
+        type: 'Condition',
+        loc: this.getLocationFromList(children),
+        kind,
+        children
+    };
+}
+
+function generate(node) {
+    node.children.forEach(child => {
+        if (child.type === 'Condition') {
+            this.token(types.LeftParenthesis, '(');
+            this.node(child);
+            this.token(types.RightParenthesis, ')');
+        } else {
+            this.node(child);
+        }
+    });
+}
+
+exports.generate = generate;
+exports.name = name;
+exports.parse = parse;
+exports.structure = structure;