Fix multi dimensional array validation issue

packages/web3-validator/CHANGELOG.md

@@ -142,3 +142,7 @@ Documentation:
 -   ESM import bug (#6359)
 
 ## [Unreleased]
+
+## Fixed
+
+-   Multi-dimensional arrays are now handled properly when parsing ABIs

packages/web3-validator/src/utils.ts

@@ -187,7 +187,16 @@
 				delete childSchema.minItems;
 			}
 
-			lastSchema.items = childSchema;
+			// lastSchema.items is a Schema, concat with 'childSchema'
+			if (!Array.isArray(lastSchema.items)) {
+				lastSchema.items = [lastSchema.items as JsonSchema, childSchema];
+			} // lastSchema.items is an empty Scheme array, set it to 'childSchema'
+			else if (lastSchema.items.length === 0) {
+				lastSchema.items = childSchema;
+			} // lastSchema.items is a non-empty Scheme array, append 'childSchema'
+			else {
+				lastSchema.items.push(childSchema);
+			}
 			lastSchema = childSchema;
 		}
 
@@ -237,6 +246,7 @@
 				...convertEthType(abiType),
 			});
 		}
+		lastSchema = schema;
 	}
 
 	return schema;

packages/web3-validator/test/fixtures/abi_to_json_schema.ts

@@ -1536,4 +1536,126 @@ export const abiToJsonSchemaCases: AbiToJsonSchemaCase[] = [
 			],
 		},
 	},
+	{
+		title: 'multi-dimensional array',
+		abi: {
+			fullSchema: [
+				{
+					name: 'x1',
+					type: 'uint256[][]',
+				},
+				{
+					name: 'x2',
+					type: 'uint256[][]',
+				},
+				{
+					name: 'x3',
+					type: 'uint256',
+				},
+			],
+			shortSchema: ['uint256[][]', 'uint256[][]', 'uint256'],
+			data: [
+				[
+					[1, 1],
+					[2, 2],
+				],
+				[
+					[1, 1, 1],
+					[2, 2, 2],
+					[3, 3, 3],
+				],
+				42,
+			],
+		},
+		json: {
+			fullSchema: {
+				type: 'array',
+				items: [
+					{
+						type: 'array',
+						items: [
+							{
+								type: 'array',
+								$id: 'x1',
+								items: {
+									format: 'uint',
+									required: true,
+								},
+							},
+						],
+					},
+					{
+						type: 'array',
+						items: [
+							{
+								type: 'array',
+								$id: 'x2',
+								items: {
+									format: 'uint',
+									required: true,
+								},
+							},
+						],
+					},
+					{
+						$id: 'x3',
+						format: 'uint256',
+						required: true,
+					},
+				],
+				maxItems: 3,
+				minItems: 3,
+			},
+			shortSchema: {
+				type: 'array',
+				items: [
+					{
+						type: 'array',
+						items: [
+							{
+								type: 'array',
+								$id: '/0/0',
+								items: {
+									format: 'uint',
+									required: true,
+								},
+							},
+						],
+					},
+					{
+						type: 'array',
+						items: [
+							{
+								type: 'array',
+								$id: '/0/1',
+								items: {
+									format: 'uint',
+									required: true,
+								},
+							},
+						],
+					},
+					{
+						$id: '/0/2',
+						format: 'uint256',
+						required: true,
+					},
+				],
+				maxItems: 3,
+				minItems: 3,
+			},
+			data: {
+				x1: [
+					[1, 1],
+					[2, 2],
+				],
+				x2: [
+					[1, 1, 1],
+					[2, 2, 2],
+					[3, 3, 3],
+				],
+				x3: 42,
+			},
+		},
+	},
 ];