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Documented the intended interface for the settings store; parseBooleanLiteral() is now a private method in the ConfigurationFileStore again; added some unit tests for the registry-based settings store

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git-svn-id: file:///srv/devel/repo-conversion/nusu@318 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2014-07-22 15:58:07 +00:00
parent 88105794a9
commit 0d1051dd84
6 changed files with 272 additions and 96 deletions
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69
Source/Parsing/ParserHelper.cs
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@ -176,75 +176,6 @@ namespace Nuclex.Support.Parsing {
return false;
}
/// <summary>Tried to parse a boolean literal</summary>
/// <param name="value">Value that will be parsed as a boolean literal</param>
/// <returns>
/// True or false if the value was a boolean literal, null if it wasn't
/// </returns>
public static bool? ParseBooleanLiteral(string value) {
if(value == null) {
return null;
}
var stringSegment = new StringSegment(value, 0, value.Length);
return ParseBooleanLiteral(ref stringSegment);
}
/// <summary>Tried to parse a boolean literal</summary>
/// <param name="value">Value that will be parsed as a boolean literal</param>
/// <returns>
/// True or false if the value was a boolean literal, null if it wasn't
/// </returns>
public static bool? ParseBooleanLiteral(ref StringSegment value) {
switch(value.Count) {
// If the string spells 'no', it is considered a boolean
case 2: {
bool isSpellingNo =
((value.Text[value.Offset + 0] == 'n') || (value.Text[value.Offset + 0] == 'N')) &&
((value.Text[value.Offset + 1] == 'o') || (value.Text[value.Offset + 1] == 'O'));
return isSpellingNo ? new Nullable<bool>(false) : null;
}
// If the string spells 'yes', it is considered a boolean
case 3: {
bool isSpellingYes =
((value.Text[value.Offset + 0] == 'y') || (value.Text[value.Offset + 0] == 'Y')) &&
((value.Text[value.Offset + 1] == 'e') || (value.Text[value.Offset + 1] == 'E')) &&
((value.Text[value.Offset + 2] == 's') || (value.Text[value.Offset + 2] == 'S'));
return isSpellingYes ? new Nullable<bool>(true) : null;
}
// If the string spells 'true', it is considered a boolean
case 4: {
bool isSpellingTrue =
((value.Text[value.Offset + 0] == 't') || (value.Text[value.Offset + 0] == 'T')) &&
((value.Text[value.Offset + 1] == 'r') || (value.Text[value.Offset + 1] == 'R')) &&
((value.Text[value.Offset + 2] == 'u') || (value.Text[value.Offset + 2] == 'U')) &&
((value.Text[value.Offset + 3] == 'e') || (value.Text[value.Offset + 3] == 'E'));
return isSpellingTrue ? new Nullable<bool>(true) : null;
}
// If the string spells 'false', it is considered a boolean
case 5: {
bool isSpellingFalse =
((value.Text[value.Offset + 0] == 'f') || (value.Text[value.Offset + 0] == 'F')) &&
((value.Text[value.Offset + 1] == 'a') || (value.Text[value.Offset + 1] == 'A')) &&
((value.Text[value.Offset + 2] == 'l') || (value.Text[value.Offset + 2] == 'L')) &&
((value.Text[value.Offset + 3] == 's') || (value.Text[value.Offset + 3] == 'S')) &&
((value.Text[value.Offset + 4] == 'e') || (value.Text[value.Offset + 4] == 'E'));
return isSpellingFalse ? new Nullable<bool>(false) : null;
}
// Anything else is not considered a boolean
default: {
return null;
}
}
}
}
} // namespace Nuclex.Support.Parsing