private static void parseExportMap(ExportStatement export, ParseInfo state, ref int index)
{
index++;
Tools.SkipSpaces(state.Code, ref index);
if (state.Code[index] == '}')
{
ExceptionHelper.ThrowSyntaxError("Empty export map", state.Code, index);
}
while (state.Code[index] != '}')
{
var start = index;
if (!Parser.ValidateName(state.Code, ref index))
{
ExceptionHelper.ThrowSyntaxError("Invalid export name", state.Code, index);
}
var name = state.Code.Substring(start, index - start);
var alias = name;
Tools.SkipSpaces(state.Code, ref index);
alias = parseAlias(state.Code, ref index) ?? name;
for (var i = 0; i < export._map.Count; i++)
{
if (export._map[i].Key == name)
{
ExceptionHelper.ThrowSyntaxError("Duplicate import", state.Code, index);
}
}
export._map.Add(
new KeyValuePair <string, Expression>(
alias,
new Variable(name, state.LexicalScopeLevel)
{
Position = start,
Length = name.Length
}));
if (Parser.Validate(state.Code, ",", ref index))
{
Tools.SkipSpaces(state.Code, ref index);
}
}
index++;
}
internal static CodeNode Parse(ParseInfo state, ref int index)
{
if (!Parser.Validate(state.Code, "export", ref index))
{
return(null);
}
Tools.SkipSpaces(state.Code, ref index);
var result = new ExportStatement();
var reexport = 0;
if (Parser.Validate(state.Code, "*", ref index))
{
reexport = 1;
}
else if (Parser.Validate(state.Code, "default", ref index))
{
reexport = -1;
Tools.SkipSpaces(state.Code, ref index);
result._map.Add(new KeyValuePair <string, Expression>("", (Expression)ExpressionTree.Parse(state, ref index)));
}
else if (state.Code[index] == '{')
{
parseExportMap(result, state, ref index);
}
else
{
reexport = -1;
var definition =
VariableDefinition.Parse(state, ref index)
?? ClassDefinition.Parse(state, ref index)
?? FunctionDefinition.Parse(state, ref index, FunctionKind.Function);
if (definition == null)
{
ExceptionHelper.ThrowSyntaxError(Messages.UnexpectedToken, state.Code, index);
}
result._internalDefinition = definition;
}
Tools.SkipSpaces(state.Code, ref index);
if (Parser.Validate(state.Code, "from", ref index))
{
if (reexport == -1)
{
ExceptionHelper.ThrowSyntaxError("Reexport is not allowed with this syntax", state.Code, index - 4);
}
Tools.SkipSpaces(state.Code, ref index);
var start = index;
if (!Parser.ValidateString(state.Code, ref index, false))
{
ExceptionHelper.ThrowSyntaxError("Expected module name", state.Code, index);
}
result.ReExportSourceModuleName = Tools.Unescape(state.Code.Substring(start + 1, index - start - 2), false);
}
else if (reexport == 1)
{
ExceptionHelper.ThrowSyntaxError("Expected 'from'", state.Code, index);
}
return(result);
}