Merge pull request #7926 from ethereum/revertSemver

Revert changes to semver matcher.

Author: chriseth

Changelog.md

@@ -18,7 +18,7 @@ Bugfixes:
  * SMTChecker: Fix internal error when using ``abi.decode``.
  * SMTChecker: Fix internal error when using arrays or mappings of functions.
  * SMTChecker: Fix internal error in array of structs type.
- * Version Checker: 0.5.x-prerelease will match `pragma solidity ^0.5`.
+ * Version Checker: ``^0`` should match ``0.5.0``, but no prerelease.
  * Yul: Consider infinite loops and recursion to be not removable.
 
 

liblangutil/SemVerHandler.cpp

@@ -88,7 +88,7 @@ bool SemVerMatchExpression::MatchComponent::matches(SemVerVersion const& _versio
 		if (!comp.matches(_version))
 			return false;
 
-		if (comp.version.numbers[0] == 0)
+		if (comp.version.numbers[0] == 0 && comp.levelsPresent != 1)
 			comp.levelsPresent = 2;
 		else
 			comp.levelsPresent = 1;
@@ -107,17 +107,7 @@ bool SemVerMatchExpression::MatchComponent::matches(SemVerVersion const& _versio
 			}
 
 		if (cmp == 0 && !_version.prerelease.empty() && didCompare)
-		{
 			cmp = -1;
-			for (unsigned i = levelsPresent; i < 3; i++)
-			{
-				if (_version.numbers[i] > 0)
-				{
-					cmp = 0;
-					break;
-				}
-			}
-		}
 
 		switch (prefix)
 		{

test/libsolidity/SemVerMatcher.cpp

@@ -141,14 +141,14 @@ BOOST_AUTO_TEST_CASE(positive_range)
 		{"^0.1.2", "0.1.2"},
 		{"^0.1", "0.1.2"},
 		{"^1.2", "1.4.2"},
-		{"^1.2", "1.2.1-pre"},
 		{"^1.2", "1.2.0"},
-		{"^1", "1.2.0-pre"},
 		{"^1", "1.2.0"},
 		{"<=1.2.3", "1.2.3-beta"},
 		{">1.2", "1.3.0-beta"},
 		{"<1.2.3", "1.2.3-beta"},
-		{"^1.2 ^1", "1.4.2"}
+		{"^1.2 ^1", "1.4.2"},
+		{"^0", "0.5.1"},
+		{"^0", "0.1.1"},
 	};
 	for (auto const& t: tests)
 	{
@@ -163,13 +163,14 @@ BOOST_AUTO_TEST_CASE(positive_range)
 
 BOOST_AUTO_TEST_CASE(negative_range)
 {
-	// Positive range tests
+	// Negative range tests
 	vector<pair<string, string>> tests = {
 		{"1.0.0 - 2.0.0", "2.2.3"},
 		{"1.0", "1.0.0-pre"},
 		{"1", "1.0.0-pre"},
 		{"^1.2.3", "1.2.3-pre"},
 		{"^1.2", "1.2.0-pre"},
+		{"^1.2", "1.2.1-pre"},
 		{"^1.2.3", "1.2.3-beta"},
 		{"=0.7.x", "0.7.0-asdf"},
 		{">=0.7.x", "0.7.0-asdf"},
@@ -212,8 +213,16 @@ BOOST_AUTO_TEST_CASE(negative_range)
 		{"=1.2.3", "1.2.3-beta"},
 		{">1.2", "1.2.8"},
 		{"^1.2.3", "2.0.0-alpha"},
+		{"^0.6", "0.6.2-alpha"},
+		{"^0.6", "0.6.0-alpha"},
+		{"^1.2", "1.2.1-pre"},
 		{"^1.2.3", "1.2.2"},
-		{"^1.2", "1.1.9"}
+		{"^1", "1.2.0-pre"},
+		{"^1", "1.2.0-pre"},
+		{"^1.2", "1.1.9"},
+		{"^0", "0.5.1-pre"},
+		{"^0", "0.0.0-pre"},
+		{"^0", "1.0.0"},
 	};
 	for (auto const& t: tests)
 	{