Merge pull request #4176 from sifmelcara/add/calldata-keyword

Add a new keyword, "calldata", to allow explicitly specify data location in external function's argument list

test/libsolidity/SolidityNameAndTypeResolution.cpp

@@ -6280,7 +6280,7 @@ BOOST_AUTO_TEST_CASE(unspecified_storage_v050)
 			}
 		}
 	)";
-	CHECK_ERROR(text, TypeError, "Storage location must be specified as either \"memory\" or \"storage\".");
+	CHECK_ERROR(text, TypeError, "Data location must be specified as either \"memory\" or \"storage\".");
 }
 
 BOOST_AUTO_TEST_CASE(storage_location_non_array_or_struct_disallowed)
@@ -6290,7 +6290,7 @@ BOOST_AUTO_TEST_CASE(storage_location_non_array_or_struct_disallowed)
 			function f(uint storage a) public { }
 		}
 	)";
-	CHECK_ERROR(text, TypeError, "Storage location can only be given for array or struct types.");
+	CHECK_ERROR(text, TypeError, "Data location can only be given for array or struct types.");
 }
 
 BOOST_AUTO_TEST_CASE(storage_location_non_array_or_struct_disallowed_is_not_fatal)
@@ -6302,7 +6302,7 @@ BOOST_AUTO_TEST_CASE(storage_location_non_array_or_struct_disallowed_is_not_fata
 			}
 		}
 	)";
-	CHECK_ERROR_ALLOW_MULTI(text, TypeError, (std::vector<std::string>{"Storage location can only be given for array or struct types."}));
+	CHECK_ERROR_ALLOW_MULTI(text, TypeError, (std::vector<std::string>{"Data location can only be given for array or struct types."}));
 }
 
 BOOST_AUTO_TEST_CASE(implicit_conversion_disallowed)

test/libsolidity/SolidityTypes.cpp

@@ -151,7 +151,12 @@ BOOST_AUTO_TEST_CASE(type_identifiers)
 	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("bool")->identifier(), "t_bool");
 	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("bytes")->identifier(), "t_bytes_storage_ptr");
 	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("bytes memory")->identifier(), "t_bytes_memory_ptr");
+	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("bytes storage")->identifier(), "t_bytes_storage_ptr");
+	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("bytes calldata")->identifier(), "t_bytes_calldata_ptr");
 	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("string")->identifier(), "t_string_storage_ptr");
+	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("string memory")->identifier(), "t_string_memory_ptr");
+	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("string storage")->identifier(), "t_string_storage_ptr");
+	BOOST_CHECK_EQUAL(Type::fromElementaryTypeName("string calldata")->identifier(), "t_string_calldata_ptr");
 	ArrayType largeintArray(DataLocation::Memory, Type::fromElementaryTypeName("int128"), u256("2535301200456458802993406410752"));
 	BOOST_CHECK_EQUAL(largeintArray.identifier(), "t_array$_t_int128_$2535301200456458802993406410752_memory_ptr");
 	TypePointer stringArray = make_shared<ArrayType>(DataLocation::Storage, Type::fromElementaryTypeName("string"), u256("20"));

test/libsolidity/syntaxTests/dataLocations/externalFunction/function_argument_location_specifier_test_external_calldata.sol

@@ -0,0 +1,4 @@
+contract test {
+    function f(bytes calldata) external;
+}
+// ----

test/libsolidity/syntaxTests/dataLocations/externalFunction/function_argument_location_specifier_test_external_memory.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes memory) external;
+}
+// ----
+// TypeError: (31-36): Location has to be calldata for external functions (remove the "memory" or "storage" keyword).

test/libsolidity/syntaxTests/dataLocations/externalFunction/function_argument_location_specifier_test_external_storage.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes storage) external;
+}
+// ----
+// TypeError: (31-36): Location has to be calldata for external functions (remove the "memory" or "storage" keyword).

test/libsolidity/syntaxTests/dataLocations/function_argument_location_specifier_test_library.sol

@@ -0,0 +1,5 @@
+library test {
+    function f(bytes calldata) public;
+}
+// ----
+// TypeError: (30-35): Location cannot be calldata for non-external functions (remove the "calldata" keyword).

test/libsolidity/syntaxTests/dataLocations/function_argument_location_specifier_test_non_reference_type.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes4 memory) public;
+}
+// ----
+// TypeError: (31-37): Data location can only be given for array or struct types.

test/libsolidity/syntaxTests/dataLocations/internalFunction/function_argument_location_specifier_test_internal_calldata.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes calldata) internal;
+}
+// ----
+// TypeError: (31-36): Variable cannot be declared as "calldata" (remove the "calldata" keyword).

test/libsolidity/syntaxTests/dataLocations/internalFunction/function_argument_location_specifier_test_internal_memory.sol

@@ -0,0 +1,4 @@
+contract test {
+    function f(bytes memory) internal;
+}
+// ----

test/libsolidity/syntaxTests/dataLocations/internalFunction/function_argument_location_specifier_test_internal_storage.sol

@@ -0,0 +1,4 @@
+contract test {
+    function f(bytes storage) internal;
+}
+// ----

test/libsolidity/syntaxTests/dataLocations/publicFunction/function_argument_location_specifier_test_public_calldata.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes calldata) public;
+}
+// ----
+// TypeError: (31-36): Location has to be memory for publicly visible functions (remove the "storage" or "calldata" keyword).

test/libsolidity/syntaxTests/dataLocations/publicFunction/function_argument_location_specifier_test_public_memory.sol

@@ -0,0 +1,4 @@
+contract test {
+    function f(bytes memory) public;
+}
+// ----

test/libsolidity/syntaxTests/dataLocations/publicFunction/function_argument_location_specifier_test_public_storage.sol

@@ -0,0 +1,5 @@
+contract test {
+    function f(bytes storage) public;
+}
+// ----
+// TypeError: (31-36): Location has to be memory for publicly visible functions (remove the "storage" or "calldata" keyword).

test/libsolidity/syntaxTests/dataLocations/variable_declaration_location_specifier_test_non_reference_type.sol

@@ -0,0 +1,13 @@
+contract test {
+    function f() {
+      uint storage a1;
+      bytes16 storage b1;
+      uint memory a2;
+      bytes16 memory b2;
+    }
+}
+// ----
+// TypeError: (41-56): Data location can only be given for array or struct types.
+// TypeError: (64-82): Data location can only be given for array or struct types.
+// TypeError: (90-104): Data location can only be given for array or struct types.
+// TypeError: (112-129): Data location can only be given for array or struct types.

test/libsolidity/syntaxTests/dataLocations/variable_declaration_location_specifier_test_reference_type.sol

@@ -0,0 +1,14 @@
+contract test {
+    uint[] a;
+    uint[]  b;
+    function f() public {
+      uint[] storage s1 = a;
+      uint[] memory s2 = new uint[](42);
+      uint[] s3 = b;
+      s1.push(42);
+      s2[3] = 12;
+      s3.push(42);
+    }
+}
+// ----
+// Warning: (147-156): Variable is declared as a storage pointer. Use an explicit "storage" keyword to silence this warning.

test/libsolidity/syntaxTests/parsing/location_specifiers_for_params.sol

@@ -2,4 +2,4 @@ contract Foo {
     function f(uint[] storage constant x, uint[] memory y) internal { }
 }
 // ----
-// TypeError: (30-55): Storage location has to be "memory" (or unspecified) for constants.
+// TypeError: (30-55): Data location has to be "memory" (or unspecified) for constants.