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Reimplement the C# API.

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This commit reimplements the C# API in terms of a Wasmtime linker.

It removes the custom binding implementation that was based on reflection in
favor of the linker's implementation.

This should make the C# API a little closer to the Rust API.

The `Engine` and `Store` types have been hidden behind the `Host` type which is
responsible for hosting WebAssembly module instances.

Documentation and tests have been updated.
This commit is contained in:
Peter Huene
2020-03-24 18:20:22 -07:00
parent 0d5d63fdb1
commit cf1d9ee857
38 changed files with 2149 additions and 2213 deletions
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32
crates/misc/dotnet/examples/global/Program.cs
View File

@@ -3,29 +3,25 @@ using Wasmtime;
namespace HelloExample
{
class Host : IHost
{
public Instance Instance { get; set; }
[Import("print_global")]
public void PrintGlobal()
{
Console.WriteLine($"The value of the global is: {Global.Value}.");
}
[Import("global")]
public readonly MutableGlobal<int> Global = new MutableGlobal<int>(1);
}
class Program
{
static void Main(string[] args)
{
using var engine = new Engine();
using var store = engine.CreateStore();
using var module = store.CreateModule("global.wasm");
using dynamic instance = module.Instantiate(new Host());
using var host = new Host();
var global = host.DefineMutableGlobal("", "global", 1);
host.DefineFunction(
"",
"print_global",
() => {
Console.WriteLine($"The value of the global is: {global.Value}.");
}
);
using var module = host.LoadModule("global.wasm");
using dynamic instance = host.Instantiate(module);
instance.run(20);
}
}

25
crates/misc/dotnet/examples/hello/Program.cs
View File

@@ -3,26 +3,21 @@ using Wasmtime;
namespace HelloExample
{
class Host : IHost
{
public Instance Instance { get; set; }
[Import("hello")]
public void SayHello()
{
Console.WriteLine("Hello from C#, WebAssembly!");
}
}
class Program
{
static void Main(string[] args)
{
using var engine = new Engine();
using var store = engine.CreateStore();
using var module = store.CreateModule("hello.wasm");
using dynamic instance = module.Instantiate(new Host());
using var host = new Host();
host.DefineFunction(
"",
"hello",
() => Console.WriteLine("Hello from C#, WebAssembly!")
);
using var module = host.LoadModule("hello.wasm");
using dynamic instance = host.Instantiate(module);
instance.run();
}
}

29
crates/misc/dotnet/examples/memory/Program.cs
View File

@@ -3,27 +3,24 @@ using Wasmtime;
namespace HelloExample
{
class Host : IHost
{
public Instance Instance { get; set; }
[Import("log")]
public void Log(int address, int length)
{
var message = Instance.Externs.Memories[0].ReadString(address, length);
Console.WriteLine($"Message from WebAssembly: {message}");
}
}
class Program
{
static void Main(string[] args)
{
using var engine = new Engine();
using var store = engine.CreateStore();
using var module = store.CreateModule("memory.wasm");
using dynamic instance = module.Instantiate(new Host());
using var host = new Host();
host.DefineFunction(
"",
"log",
(Caller caller, int address, int length) => {
var message = caller.GetMemory("mem").ReadString(address, length);
Console.WriteLine($"Message from WebAssembly: {message}");
}
);
using var module = host.LoadModule("memory.wasm");
using dynamic instance = host.Instantiate(module);
instance.run();
}
}