public IWasmicSyntaxTree ParseText(string text)
{
var lexer = new WasmicLexer(text);
var functionMap = new FunctionMap();
var functions = new List <IWasmicSyntaxTree>();
var functionDefinitionGenerator = new FunctionDefinitionParser();
var heap = new LinearHeap();
while (lexer.Next.TokenType != TokenType.EndOfText)
{
switch (lexer.Next.TokenType)
{
case TokenType.Extern:
lexer.Advance(); // eat extern
var functionDefinition = functionDefinitionGenerator.Generate(lexer);
functionMap.Add(functionDefinition);
functions.Add(new Import(functionDefinition.Name.Split('.'), functionDefinition));
break;
default:
var functionGenerator = new FunctionParser(
lexer,
functionMap,
functionDefinitionGenerator,
heap
);
var function = functionGenerator.GetFunction();
functions.Add(function);
break;
}
if (lexer.Next.TokenType == TokenType.SemiColon)
{
lexer.Advance();
}
}
if (heap.IsAllocated)
{
functions = new[] { new Memory() }
.Concat(heap.GetAllocatedStrings().Select(v => new Data(v.offset, v.value) as IWasmicSyntaxTree))
.Concat(functions).ToList();
}
return(new Module(functions));
}
/// <summary>
///
/// </summary>
/// <param name="cs"></param>
public NameSection(CustomSection cs)
{
var stream = new MemoryStream((byte[])cs.Content);
var reader = new Reader(stream);
var previousSection = NameSubsection.Module;
var preSectionOffset = reader.Offset;
while (reader.TryReadVarUInt7(out var id)) //At points where TryRead is used, the stream can safely end.
{
if (id != 0 && (NameSubsection)id < previousSection)
{
throw new ModuleLoadException($"Sections out of order; section {(NameSubsection)id} encounterd after {previousSection}.", preSectionOffset);
}
var payloadLength = reader.ReadVarUInt32();
switch ((NameSubsection)id)
{
case NameSubsection.Module:
{
var nameLength = reader.ReadVarUInt32();
Name = reader.ReadString(nameLength);
}
break;
case NameSubsection.Function:
{
var count = reader.ReadVarUInt32();
Functions = new FunctionMap((int)count);
for (int i = 0; i < count; i++)
{
var index = reader.ReadVarUInt32();
var nameLength = reader.ReadVarUInt32();
var name = reader.ReadString(nameLength);
Functions.Add(index, name);
}
}
break;
case NameSubsection.Local:
{
var fun_count = reader.ReadVarUInt32();
Locals = new LocalMap((int)fun_count);
for (int f = 0; f < fun_count; f++)
{
var fun_index = reader.ReadVarUInt32();
var count = reader.ReadVarUInt32();
var nameMap = new NameMap((int)count);
Locals.Add(fun_index, nameMap);
for (int i = 0; i < count; i++)
{
var index = reader.ReadVarUInt32();
var nameLength = reader.ReadVarUInt32();
var name = reader.ReadString(nameLength);
nameMap.Add(index, name);
}
}
}
break;
}
previousSection = (NameSubsection)id;
}
}
