Improve Error Reporting of SemVer Parser

test/libsolidity/syntaxTests/pragma/blank_space_version.sol

@@ -0,0 +1,3 @@
+pragma solidity ;
+// ----
+// ParserError 1684: (0-17): Invalid version pragma. Empty version pragma.

test/libsolidity/syntaxTests/pragma/broken_version_2.sol

@@ -1,3 +1,3 @@
 pragma solidity pragma;
 // ----
-// ParserError 1684: (0-23): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-23): Invalid version pragma. Expected the start of a version number but instead found character 'p'. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/broken_version_4.sol

@@ -1,3 +1,3 @@
 pragma solidity (8.0.0);
 // ----
-// ParserError 1684: (0-24): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-24): Invalid version pragma. Expected the start of a version number but instead found character '('. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/broken_version_5.sol

@@ -1,3 +1,3 @@
 pragma solidity 88_;
 // ----
-// ParserError 1684: (0-20): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-20): Invalid version pragma. Expected the start of a version number but instead found character '_'. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/broken_version_6.sol

@@ -1,3 +1,3 @@
 pragma solidity v1.2.3;
 // ----
-// ParserError 1684: (0-23): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-23): Invalid version pragma. Expected the start of a version number but instead found character 'v'. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/broken_version_7.sol

@@ -1,3 +1,3 @@
 pragma solidity >0.5.0<;
 // ----
-// ParserError 1684: (0-24): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-24): Invalid version pragma. Expected version number but reached end of pragma.

test/libsolidity/syntaxTests/pragma/empty_version.sol

@@ -1,3 +1,3 @@
 pragma solidity;
 // ----
-// ParserError 1684: (0-16): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-16): Invalid version pragma. Empty version pragma.

test/libsolidity/syntaxTests/pragma/invalid_range_conjunction_range_first.sol

@@ -0,0 +1,3 @@
+pragma solidity 0.4.1 - 0.6.2 0.8.17;
+// ----
+// ParserError 1684: (0-37): Invalid version pragma. You can only combine version ranges using the || operator.

test/libsolidity/syntaxTests/pragma/invalid_range_conjunction_range_second.sol

@@ -0,0 +1,3 @@
+pragma solidity 0.8.17 0.4.1 - 0.6.2;
+// ----
+// ParserError 1684: (0-37): Invalid version pragma. Expected the start of a version number but instead found character '-'. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/invalid_range_conjunction_two_ranges.sol

@@ -0,0 +1,3 @@
+pragma solidity 0.4.0 - 0.4.1 0.4.1 - 0.6.2;
+// ----
+// ParserError 1684: (0-44): Invalid version pragma. You can only combine version ranges using the || operator.

test/libsolidity/syntaxTests/pragma/unterminated_version.sol

@@ -1,4 +1,4 @@
 pragma solidity 0.4.3
 pragma abicoder v2;
 // ----
-// ParserError 1684: (0-41): Found version pragma, but failed to parse it. Please ensure there is a trailing semicolon.
+// ParserError 1684: (0-41): Invalid version pragma. Expected the start of a version number but instead found character 'p'. Version number is invalid or the pragma is not terminated with a semicolon.

test/libsolidity/syntaxTests/pragma/valid_range_disjunction_range_second.sol

@@ -0,0 +1,2 @@
+pragma solidity 0.8.17 || 0.4.1 - 0.9.0;
+// ----

test/libsolidity/syntaxTests/pragma/valid_range_disjunction_two_ranges.sol

@@ -0,0 +1,2 @@
+pragma solidity 0.4.0 - 0.9.0 || 0.4.1 - 0.6.2;
+// ----

test/libsolidity/syntaxTests/pragma/version_number_too_large.sol

@@ -0,0 +1,3 @@
+pragma solidity 4294967296;
+// ----
+// ParserError 1684: (0-27): Invalid version pragma. Integer too large to be used in a version number.