private JsKeyword(JsToken token, string name, JsKeyword next)
{
m_name = name;
m_token = token;
m_length = m_name.Length;
m_next = next;
}
private JsKeyword(JsToken token, string name, JsKeyword next)
{
m_name = name;
m_token = token;
m_length = m_name.Length;
m_next = next;
}
internal JsToken GetKeyword(string source, int startPosition, int wordLength)
{
JsKeyword keyword = this;
nextToken:
while (null != keyword)
{
if (wordLength == keyword.m_length)
{
// equal number of characters
// we know the first char has to match, so start with the second
for (int i = 1, j = startPosition + 1; i < wordLength; i++, j++)
{
char ch1 = keyword.m_name[i];
char ch2 = source[j];
if (ch1 == ch2)
{
// match -- continue
continue;
}
else if (ch2 < ch1)
{
// because the list is in order, if the character for the test
// is less than the character for the keyword we are testing against,
// then we know this isn't going to be in any other node
return(JsToken.Identifier);
}
else
{
// must be greater than the current token -- try the next one
keyword = keyword.m_next;
goto nextToken;
}
}
// if we got this far, it was a complete match
return(keyword.m_token);
}
else if (wordLength < keyword.m_length)
{
// in word-length order first of all, so if the length of the test string is
// less than the length of the keyword node, this is an identifier
return(JsToken.Identifier);
}
keyword = keyword.m_next;
}
return(JsToken.Identifier);
}
// each list must in order or length first, shortest to longest.
// for equal length words, in alphabetical order
internal static JsKeyword[] InitKeywords()
{
JsKeyword[] keywords = new JsKeyword[26];
// a
// b
keywords['b' - 'a'] = new JsKeyword(JsToken.Break, "break");
// c
keywords['c' - 'a'] = new JsKeyword(JsToken.Case, "case",
new JsKeyword(JsToken.Catch, "catch",
new JsKeyword(JsToken.Class, "class",
new JsKeyword(JsToken.Const, "const",
new JsKeyword(JsToken.Continue, "continue")))));
// d
keywords['d' - 'a'] = new JsKeyword(JsToken.Do, "do",
new JsKeyword(JsToken.Delete, "delete",
new JsKeyword(JsToken.Default, "default",
new JsKeyword(JsToken.Debugger, "debugger"))));
// e
keywords['e' - 'a'] = new JsKeyword(JsToken.Else, "else",
new JsKeyword(JsToken.Enum, "enum",
new JsKeyword(JsToken.Export, "export",
new JsKeyword(JsToken.Extends, "extends"))));
// f
keywords['f' - 'a'] = new JsKeyword(JsToken.For, "for",
new JsKeyword(JsToken.False, "false",
new JsKeyword(JsToken.Finally, "finally",
new JsKeyword(JsToken.Function, "function"))));
// g
keywords['g' - 'a'] = new JsKeyword(JsToken.Get, "get");
// i
keywords['i' - 'a'] = new JsKeyword(JsToken.If, "if",
new JsKeyword(JsToken.In, "in",
new JsKeyword(JsToken.Import, "import",
new JsKeyword(JsToken.Interface, "interface",
new JsKeyword(JsToken.Implements, "implements",
new JsKeyword(JsToken.InstanceOf, "instanceof"))))));
// l
keywords['l' - 'a'] = new JsKeyword(JsToken.Let, "let");
// n
keywords['n' - 'a'] = new JsKeyword(JsToken.New, "new",
new JsKeyword(JsToken.Null, "null",
new JsKeyword(JsToken.Native, "native")));
// p
keywords['p' - 'a'] = new JsKeyword(JsToken.Public, "public",
new JsKeyword(JsToken.Package, "package",
new JsKeyword(JsToken.Private, "private",
new JsKeyword(JsToken.Protected, "protected"))));
// r
keywords['r' - 'a'] = new JsKeyword(JsToken.Return, "return");
// s
keywords['s' - 'a'] = new JsKeyword(JsToken.Set, "set",
new JsKeyword(JsToken.Super, "super",
new JsKeyword(JsToken.Static, "static",
new JsKeyword(JsToken.Switch, "switch"))));
// t
keywords['t' - 'a'] = new JsKeyword(JsToken.Try, "try",
new JsKeyword(JsToken.This, "this",
new JsKeyword(JsToken.True, "true",
new JsKeyword(JsToken.Throw, "throw",
new JsKeyword(JsToken.TypeOf, "typeof")))));
// u
// v
keywords['v' - 'a'] = new JsKeyword(JsToken.Var, "var",
new JsKeyword(JsToken.Void, "void"));
// w
keywords['w' - 'a'] = new JsKeyword(JsToken.With, "with",
new JsKeyword(JsToken.While, "while"));
// y
keywords['y' - 'a'] = new JsKeyword(JsToken.Yield, "yield");
return(keywords);
}
// each list must in order or length first, shortest to longest.
// for equal length words, in alphabetical order
internal static JsKeyword[] InitKeywords()
{
JsKeyword[] keywords = new JsKeyword[26];
// a
// b
keywords['b' - 'a'] = new JsKeyword(JsToken.Break, "break");
// c
keywords['c' - 'a'] = new JsKeyword(JsToken.Case, "case",
new JsKeyword(JsToken.Catch, "catch",
new JsKeyword(JsToken.Class, "class",
new JsKeyword(JsToken.Const, "const",
new JsKeyword(JsToken.Continue, "continue")))));
// d
keywords['d' - 'a'] = new JsKeyword(JsToken.Do, "do",
new JsKeyword(JsToken.Delete, "delete",
new JsKeyword(JsToken.Default, "default",
new JsKeyword(JsToken.Debugger, "debugger"))));
// e
keywords['e' - 'a'] = new JsKeyword(JsToken.Else, "else",
new JsKeyword(JsToken.Enum, "enum",
new JsKeyword(JsToken.Export, "export",
new JsKeyword(JsToken.Extends, "extends"))));
// f
keywords['f' - 'a'] = new JsKeyword(JsToken.For, "for",
new JsKeyword(JsToken.False, "false",
new JsKeyword(JsToken.Finally, "finally",
new JsKeyword(JsToken.Function, "function"))));
// g
keywords['g' - 'a'] = new JsKeyword(JsToken.Get, "get");
// i
keywords['i' - 'a'] = new JsKeyword(JsToken.If, "if",
new JsKeyword(JsToken.In, "in",
new JsKeyword(JsToken.Import, "import",
new JsKeyword(JsToken.Interface, "interface",
new JsKeyword(JsToken.Implements, "implements",
new JsKeyword(JsToken.InstanceOf, "instanceof"))))));
// l
keywords['l' - 'a'] = new JsKeyword(JsToken.Let, "let");
// n
keywords['n' - 'a'] = new JsKeyword(JsToken.New, "new",
new JsKeyword(JsToken.Null, "null",
new JsKeyword(JsToken.Native, "native")));
// p
keywords['p' - 'a'] = new JsKeyword(JsToken.Public, "public",
new JsKeyword(JsToken.Package, "package",
new JsKeyword(JsToken.Private, "private",
new JsKeyword(JsToken.Protected, "protected"))));
// r
keywords['r' - 'a'] = new JsKeyword(JsToken.Return, "return");
// s
keywords['s' - 'a'] = new JsKeyword(JsToken.Set, "set",
new JsKeyword(JsToken.Super, "super",
new JsKeyword(JsToken.Static, "static",
new JsKeyword(JsToken.Switch, "switch"))));
// t
keywords['t' - 'a'] = new JsKeyword(JsToken.Try, "try",
new JsKeyword(JsToken.This, "this",
new JsKeyword(JsToken.True, "true",
new JsKeyword(JsToken.Throw, "throw",
new JsKeyword(JsToken.TypeOf, "typeof")))));
// u
// v
keywords['v' - 'a'] = new JsKeyword(JsToken.Var, "var",
new JsKeyword(JsToken.Void, "void"));
// w
keywords['w' - 'a'] = new JsKeyword(JsToken.With, "with",
new JsKeyword(JsToken.While, "while"));
// y
keywords['y' - 'a'] = new JsKeyword(JsToken.Yield, "yield");
return keywords;
}