Merge pull request #2216 from chriseth/sol_memoryArrays5

Accessors for strings and type conversion to memory.

1 files changed, 83 insertions, 5 deletions

diff --git a/libsolidity/SolidityEndToEndTest.cpp b/libsolidity/SolidityEndToEndTest.cpp
index 66a8f882..95f253d5 100644
--- a/libsolidity/SolidityEndToEndTest.cpp
+++ b/libsolidity/SolidityEndToEndTest.cpp
@@ -4243,9 +4243,9 @@ BOOST_AUTO_TEST_CASE(return_string)
 			function get1() returns (string r) {
 				return s;
 			}
-//			function get2() returns (string r) {
-//				r = s;
-//			}
+			function get2() returns (string r) {
+				r = s;
+			}
 		}
 	)";
 	compileAndRun(sourceCode, 0, "Main");
@@ -4253,8 +4253,86 @@ BOOST_AUTO_TEST_CASE(return_string)
 	bytes args = encodeArgs(u256(0x20), u256(s.length()), s);
 	BOOST_REQUIRE(callContractFunction("set(string)", asString(args)) == encodeArgs());
 	BOOST_CHECK(callContractFunction("get1()") == args);
-//	BOOST_CHECK(callContractFunction("get2()") == args);
-//	BOOST_CHECK(callContractFunction("s()") == args);
+	BOOST_CHECK(callContractFunction("get2()") == args);
+	BOOST_CHECK(callContractFunction("s()") == args);
+}
+
+BOOST_AUTO_TEST_CASE(return_multiple_strings_of_various_sizes)
+{
+	char const* sourceCode = R"(
+		contract Main {
+			string public s1;
+			string public s2;
+			function set(string _s1, uint x, string _s2) external returns (uint) {
+				s1 = _s1;
+				s2 = _s2;
+				return x;
+			}
+			function get() returns (string r1, string r2) {
+				r1 = s1;
+				r2 = s2;
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "Main");
+	string s1(
+		"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"
+		"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"
+		"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"
+		"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"
+	);
+	string s2(
+		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
+		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
+		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
+		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
+		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
+	);
+	vector<size_t> lengthes{0, 30, 32, 63, 64, 65, 210, 300};
+	for (auto l1: lengthes)
+		for (auto l2: lengthes)
+		{
+			bytes dyn1 = encodeArgs(u256(l1), s1.substr(0, l1));
+			bytes dyn2 = encodeArgs(u256(l2), s2.substr(0, l2));
+			bytes args = encodeArgs(u256(0x60), u256(l1), u256(0x60 + dyn1.size())) + dyn1 + dyn2;
+			BOOST_REQUIRE(
+				callContractFunction("set(string,uint256,string)", asString(args)) ==
+				encodeArgs(u256(l1))
+			);
+			bytes result = encodeArgs(u256(0x40), u256(0x40 + dyn1.size())) + dyn1 + dyn2;
+			BOOST_CHECK(callContractFunction("get()") == result);
+			BOOST_CHECK(callContractFunction("s1()") == encodeArgs(0x20) + dyn1);
+			BOOST_CHECK(callContractFunction("s2()") == encodeArgs(0x20) + dyn2);
+		}
+}
+
+BOOST_AUTO_TEST_CASE(accessor_involving_strings)
+{
+	char const* sourceCode = R"(
+		contract Main {
+			struct stringData { string a; uint b; string c; }
+			mapping(uint => stringData[]) public data;
+			function set(uint x, uint y, string a, uint b, string c) external returns (bool) {
+				data[x].length = y + 1;
+				data[x][y].a = a;
+				data[x][y].b = b;
+				data[x][y].c = c;
+				return true;
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "Main");
+	string s1("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
+	string s2("ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ");
+	bytes s1Data = encodeArgs(u256(s1.length()), s1);
+	bytes s2Data = encodeArgs(u256(s2.length()), s2);
+	u256 b = 765;
+	u256 x = 7;
+	u256 y = 123;
+	bytes args = encodeArgs(x, y, u256(0xa0), b, u256(0xa0 + s1Data.size()), s1Data, s2Data);
+	bytes result = encodeArgs(u256(0x60), b, u256(0x60 + s1Data.size()), s1Data, s2Data);
+	BOOST_REQUIRE(callContractFunction("set(uint256,uint256,string,uint256,string)", asString(args)) == encodeArgs(true));
+	BOOST_REQUIRE(callContractFunction("data(uint256,uint256)", x, y) == result);
 }
 
 BOOST_AUTO_TEST_CASE(storage_array_ref)