fix(std): Parsing inline arrays of inline tables in toml (#7902)

std/encoding/testdata/inlineArrayOfInlineTable.toml

@@ -0,0 +1,8 @@
+[inlineArray]
+string = [ {var = "a string"} ]
+
+my_points = [ { x = 1, y = 2, z = 3 }, { x = 7, y = 8, z = 9 }, { x = 2, y = 4, z = 8 } ]
+
+points = [ { x = 1, y = 2, z = 3 },
+    { x = 7, y = 8, z = 9 },
+    { x = 2, y = 4, z = 8 } ]

std/encoding/toml.ts

@@ -305,7 +305,10 @@ class Parser {
       dataString = dataString.replace(/,]/g, "]");
     }
 
-    if (dataString[0] === "{" && dataString[dataString.length - 1] === "}") {
+    if (
+      (dataString[0] === "{" && dataString[dataString.length - 1] === "}") ||
+      (dataString[0] === "[" && dataString[dataString.length - 1] === "]")
+    ) {
       const reg = /([a-zA-Z0-9-_\.]*) (=)/gi;
       let result;
       while ((result = reg.exec(dataString))) {

std/encoding/toml_test.ts

@@ -441,3 +441,28 @@ Deno.test({
     assertEquals(actual, expected);
   },
 });
+
+Deno.test({
+  name: "[TOML] Inline Array of Inline Table",
+  fn(): void {
+    const expected = {
+      inlineArray: {
+        string: [{ var: "a string" }],
+        my_points: [
+          { x: 1, y: 2, z: 3 },
+          { x: 7, y: 8, z: 9 },
+          { x: 2, y: 4, z: 8 },
+        ],
+        points: [
+          { x: 1, y: 2, z: 3 },
+          { x: 7, y: 8, z: 9 },
+          { x: 2, y: 4, z: 8 },
+        ],
+      },
+    };
+    const actual = parseFile(
+      path.join(testdataDir, "inlineArrayOfInlineTable.toml"),
+    );
+    assertEquals(actual, expected);
+  },
+});