Initial introduction of array slices with partial implementation for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/bytes_calldata.sol

@@ -0,0 +1,5 @@
+contract C {
+    function f(bytes calldata x) external pure {
+        x[1:2];
+    }
+}

test/libsolidity/syntaxTests/array/slice/bytes_memory.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(bytes memory x) public pure {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (66-72): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/bytes_storage.sol

@@ -0,0 +1,8 @@
+contract C {
+    bytes x;
+    function f() public view {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (65-71): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/calldata_dynamic.sol

@@ -0,0 +1,5 @@
+contract C {
+    function f(uint256[] calldata x) external pure {
+        x[1:2];
+    }
+}

test/libsolidity/syntaxTests/array/slice/calldata_dynamic_access.sol

@@ -0,0 +1,9 @@
+contract C {
+    function f(uint256[] calldata x) external pure {
+        x[1:2][0];
+        x[1:][0];
+        x[1:][1:2][0];
+        x[1:2][1:][0];
+    }
+}
+// ----

test/libsolidity/syntaxTests/array/slice/calldata_dynamic_convert_to_memory.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(bytes calldata x) external {
+        bytes memory y = x[1:2];
+    }
+}
+// ----
+// TypeError: (65-88): Type bytes calldata slice is not implicitly convertible to expected type bytes memory.

test/libsolidity/syntaxTests/array/slice/calldata_dynamic_encode.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(uint256[] calldata x) external pure {
+        abi.encode(x[1:2]);
+    }
+}
+// ----
+// TypeError: (85-91): This type cannot be encoded.

test/libsolidity/syntaxTests/array/slice/calldata_dynamic_forward.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(bytes calldata x) external {
+        return this.f(x[1:2]);
+    }
+}
+// ----
+// TypeError: (79-85): Invalid type for argument in function call. Invalid implicit conversion from bytes calldata slice to bytes memory requested.

test/libsolidity/syntaxTests/array/slice/calldata_static.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(uint256[42] calldata x) external pure {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (76-82): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/memory_dynamic.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(uint256[] memory x) public pure {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (70-76): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/memory_static.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f(uint256[42] memory x) public pure {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (72-78): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/slice_literal.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f() public pure {
+        1[1:];
+    }
+}
+// ----
+// TypeError: (52-57): Index range access is only possible for arrays and array slices.

test/libsolidity/syntaxTests/array/slice/slice_memory_bytes.sol

@@ -0,0 +1,8 @@
+contract C {
+    function f() public pure {
+        bytes memory y;
+        y[1:2];
+    }
+}
+// ----
+// TypeError: (76-82): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/slice_memory_string.sol

@@ -0,0 +1,8 @@
+contract C {
+    function f() public pure {
+        string memory y;
+        y[1:2];
+    }
+}
+// ----
+// TypeError: (77-83): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/slice_string.sol

@@ -0,0 +1,7 @@
+contract C {
+    function f() public pure {
+        ""[1:];
+    }
+}
+// ----
+// TypeError: (52-58): Index range access is only possible for arrays and array slices.

test/libsolidity/syntaxTests/array/slice/storage_dynamic.sol

@@ -0,0 +1,8 @@
+contract C {
+    uint256[] x;
+    function f() public view {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (69-75): Index range access is only supported for dynamic calldata arrays.

test/libsolidity/syntaxTests/array/slice/storage_static.sol

@@ -0,0 +1,8 @@
+contract C {
+    uint256[42] x;
+    function f() public view {
+        x[1:2];
+    }
+}
+// ----
+// TypeError: (71-77): Index range access is only supported for dynamic calldata arrays.