/// <summary>
/// Reads an imported value from the given binary WebAssembly reader.
/// </summary>
/// <param name="Reader">The WebAssembly reader.</param>
/// <returns>The imported value that was read.</returns>
public static ImportedValue ReadFrom(BinaryWasmReader Reader)
{
string moduleName = Reader.ReadString();
string fieldName = Reader.ReadString();
var kind = (ExternalKind)Reader.ReadByte();
switch (kind)
{
case ExternalKind.Function:
return(new ImportedFunction(moduleName, fieldName, Reader.ReadVarUInt32()));
case ExternalKind.Global:
return(new ImportedGlobal(moduleName, fieldName, GlobalType.ReadFrom(Reader)));
case ExternalKind.Memory:
return(new ImportedMemory(moduleName, fieldName, MemoryType.ReadFrom(Reader)));
case ExternalKind.Table:
return(new ImportedTable(moduleName, fieldName, TableType.ReadFrom(Reader)));
default:
throw new WasmException("Unknown imported value kind: " + kind);
}
}
/// <summary>
/// Reads the export section with the given header.
/// </summary>
/// <param name="header">The section header.</param>
/// <param name="reader">A reader for a binary WebAssembly file.</param>
/// <returns>The parsed section.</returns>
public static ExportSection ReadSectionPayload(
SectionHeader header, BinaryWasmReader reader)
{
long startPos = reader.Position;
// Read the function indices.
uint count = reader.ReadVarUInt32();
var exportedVals = new List <ExportedValue>();
for (uint i = 0; i < count; i++)
{
exportedVals.Add(
new ExportedValue(
reader.ReadString(),
(ExternalKind)reader.ReadByte(),
reader.ReadVarUInt32()));
}
// Skip any remaining bytes.
var extraPayload = reader.ReadRemainingPayload(startPos, header);
return(new ExportSection(exportedVals, extraPayload));
}
/// <summary>
/// Reads a module name entry's payload.
/// </summary>
/// <param name="Reader">The reader to read the name entry payload from.</param>
/// <param name="Length">The length of the name entry's payload, in bytes.</param>
/// <returns>A module name entry.</returns>
public static ModuleNameEntry ReadPayload(BinaryWasmReader Reader, uint Length)
{
return(new ModuleNameEntry(Reader.ReadString()));
}