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

1 files changed, 112 insertions, 0 deletions

diff --git a/vanilla/node_modules/css-tree/cjs/syntax/node/common/feature-range.cjs b/vanilla/node_modules/css-tree/cjs/syntax/node/common/feature-range.cjs
new file mode 100644
index 0000000..7589b56
--- /dev/null
+++ b/vanilla/node_modules/css-tree/cjs/syntax/node/common/feature-range.cjs
@@ -0,0 +1,112 @@
+'use strict';
+
+const types = require('../../../tokenizer/types.cjs');
+
+const LESSTHANSIGN = 60;    // <
+const EQUALSIGN = 61;       // =
+const GREATERTHANSIGN = 62; // >
+
+const structure = {
+    left: ['Identifier', 'Number', 'Dimension', 'Ratio'],
+    leftComparison: String,
+    middle: ['Identifier', 'Number', 'Dimension', 'Ratio'],
+    rightComparison: [String, null],
+    right: ['Identifier', 'Number', 'Dimension', 'Ratio', null]
+};
+
+function readTerm() {
+    this.skipSC();
+
+    switch (this.tokenType) {
+        case types.Number:
+            if (this.lookupNonWSType(1) === types.Delim) {
+                return this.Ratio();
+            } else {
+                return this.Number();
+            }
+
+        case types.Dimension:
+            return this.Dimension();
+
+        case types.Ident:
+            return this.Identifier();
+
+        default:
+            this.error('Number, dimension, ratio or identifier is expected');
+    }
+}
+
+function readComparison(expectColon) {
+    this.skipSC();
+
+    if (this.isDelim(LESSTHANSIGN) ||
+        this.isDelim(GREATERTHANSIGN)) {
+        const value = this.source[this.tokenStart];
+
+        this.next();
+
+        if (this.isDelim(EQUALSIGN)) {
+            this.next();
+            return value + '=';
+        }
+
+        return value;
+    }
+
+    if (this.isDelim(EQUALSIGN)) {
+        return '=';
+    }
+
+    this.error(`Expected ${expectColon ? '":", ' : ''}"<", ">", "=" or ")"`);
+}
+
+function createParse(type) {
+    return function parse() {
+        const start = this.tokenStart;
+
+        this.skipSC();
+        this.eat(types.LeftParenthesis);
+
+        const left = readTerm.call(this);
+        const leftComparison = readComparison.call(this, left.type === 'Identifier');
+        const middle = readTerm.call(this);
+        let rightComparison = null;
+        let right = null;
+
+        if (this.lookupNonWSType(0) !== types.RightParenthesis) {
+            rightComparison = readComparison.call(this);
+            right = readTerm.call(this);
+        }
+
+        this.skipSC();
+        this.eat(types.RightParenthesis);
+
+        return {
+            type,
+            loc: this.getLocation(start, this.tokenStart),
+            left,
+            leftComparison,
+            middle,
+            rightComparison,
+            right
+        };
+    };
+}
+
+function generate(node) {
+    this.token(types.LeftParenthesis, '(');
+    this.node(node.left);
+    this.tokenize(node.leftComparison);
+    this.node(node.middle);
+
+    if (node.right) {
+        this.tokenize(node.rightComparison);
+        this.node(node.right);
+    }
+
+    this.token(types.RightParenthesis, ')');
+}
+
+exports.createParse = createParse;
+exports.generate = generate;
+exports.structure = structure;