public bool CheckIfOnlyContainsValidIdentifierAtomChars(out int characterWithError)
{
for (int i = 0; i < Length; i++)
{
if (!SymbolAtom.IsValidIdentifierAtomChar(this[i]))
{
characterWithError = i;
return(false);
}
}
characterWithError = -1;
return(true);
}
public bool CheckIfOnlyContainsValidIdentifierAtomChars(out int characterWithError)
{
int end = m_index + Length;
for (int i = m_index; i < end; i++)
{
if (!SymbolAtom.IsValidIdentifierAtomChar(m_value[i]))
{
characterWithError = i;
return(false);
}
}
characterWithError = -1;
return(true);
}
/// <summary>
/// Extends a relative identifier with a new identifier components.
/// </summary>
public PartialSymbol Combine(SymbolAtom atom)
{
Contract.Requires(IsValid);
Contract.Requires(atom.IsValid);
var components = new StringId[m_components.Length + 1];
int count = 0;
foreach (StringId component in m_components)
{
components[count++] = component;
}
components[count] = atom.StringId;
return(new PartialSymbol(components));
}
/// <summary>
/// Concatenates a identifier atom to the end of a relative identifier.
/// </summary>
/// <remarks>
/// The relative identifier may not be empty when calling this method.
/// </remarks>
public PartialSymbol Concat(StringTable table, SymbolAtom addition)
{
Contract.Requires(IsValid);
Contract.RequiresNotNull(table);
Contract.Requires(addition.IsValid);
Contract.Requires(!IsEmpty);
StringId changed = new SymbolAtom(m_components[m_components.Length - 1]).Concat(table, addition).StringId;
var components = new StringId[m_components.Length];
int count = 0;
foreach (StringId component in m_components)
{
components[count++] = component;
}
components[count - 1] = changed;
return(new PartialSymbol(components));
}
/// <summary>
/// Extends a relative identifier with new identifier components.
/// </summary>
public PartialSymbol Combine(SymbolAtom atom1, SymbolAtom atom2)
{
Contract.Requires(IsValid);
Contract.Requires(atom1.IsValid);
Contract.Requires(atom2.IsValid);
Contract.Ensures(Contract.Result <PartialSymbol>().IsValid);
var components = new StringId[m_components.Length + 2];
int count = 0;
foreach (StringId component in m_components)
{
components[count++] = component;
}
components[count++] = atom1.StringId;
components[count] = atom2.StringId;
return(new PartialSymbol(components));
}
/// <summary>
/// Writes a SymbolAtom
/// </summary>
public virtual void Write(SymbolAtom value)
{
Start <SymbolAtom>();
Write(value.StringId.Value);
End();
}
/// <summary>
/// Try to create a PartialSymbol from a string.
/// </summary>
/// <returns>Return the parser result indicating success, or what was wrong with the parsing.</returns>
public static ParseResult TryCreate <T>(StringTable table, T partialSymbol, out PartialSymbol result, out int characterWithError)
where T : struct, ICharSpan <T>
{
Contract.RequiresNotNull(table);
using (var wrap = Pools.GetStringIdList())
{
List <StringId> components = wrap.Instance;
int index = 0;
int start = 0;
int last = partialSymbol.Length - 1;
while (index < partialSymbol.Length)
{
var ch = partialSymbol[index];
// trivial reject of invalid characters
if (!SymbolCharacters.IsValidDottedIdentifierChar(ch))
{
characterWithError = index;
result = Invalid;
return(ParseResult.FailureDueToInvalidCharacter);
}
if (ch == SymbolCharacters.DottedIdentifierSeparatorChar)
{
// found a component separator
if (index == start || index == last)
{
characterWithError = index;
result = Invalid;
return(ParseResult.LeadingOrTrailingDot);
}
else if (index > start)
{
// make a identifier atom out of [start..index]
SymbolAtom atom;
int charError;
SymbolAtom.ParseResult papr = SymbolAtom.TryCreate(
table,
partialSymbol.Subsegment(start, index - start),
out atom,
out charError);
if (papr != SymbolAtom.ParseResult.Success)
{
characterWithError = index + charError;
result = Invalid;
return(ParseResult.FailureDueToInvalidCharacter);
}
components.Add(atom.StringId);
}
// skip over the dot
index++;
start = index;
continue;
}
index++;
}
if (index > start)
{
// make a identifier atom out of [start..index]
SymbolAtom atom;
int charError;
SymbolAtom.ParseResult papr = SymbolAtom.TryCreate(
table,
partialSymbol.Subsegment(start, index - start),
out atom,
out charError);
if (papr != SymbolAtom.ParseResult.Success)
{
characterWithError = index + charError;
result = Invalid;
return(ParseResult.FailureDueToInvalidCharacter);
}
components.Add(atom.StringId);
}
result = new PartialSymbol(components.ToArray());
characterWithError = -1;
return(ParseResult.Success);
}
}
/// <summary>
/// Creates a PartialSymbol from a identifier atom.
/// </summary>
public static PartialSymbol Create(SymbolAtom atom)
{
Contract.Requires(atom.IsValid);
return(new PartialSymbol(atom.StringId));
}
