static bool
EncodeFunc(Encoder& e, WasmAstFunc& func)
{
if (!e.writeCString(FuncSubsection))
return false;
size_t offset;
if (!e.startSection(&offset))
return false;
if (!e.writeVarU32(func.varTypes().length()))
return false;
for (ValType type : func.varTypes()) {
if (!e.writeValType(type))
return false;
}
if (func.maybeBody()) {
if (!EncodeExpr(e, *func.maybeBody()))
return false;
} else {
if (!e.writeExpr(Expr::Nop))
return false;
}
e.finishSection(offset);
return true;
}
static bool
EncodeSignatureSection(Encoder& e, WasmAstModule& module)
{
if (module.sigs().empty())
return true;
if (!e.writeCString(SigSection))
return false;
size_t offset;
if (!e.startSection(&offset))
return false;
if (!e.writeVarU32(module.sigs().length()))
return false;
for (WasmAstSig* sig : module.sigs()) {
if (!e.writeVarU32(sig->args().length()))
return false;
if (!e.writeExprType(sig->ret()))
return false;
for (ValType t : sig->args()) {
if (!e.writeValType(t))
return false;
}
}
e.finishSection(offset);
return true;
}
static bool
EncodeCodeSection(Encoder& e, WasmAstModule& module)
{
if (module.funcs().empty())
return true;
if (!e.writeCString(CodeSection))
return false;
size_t offset;
if (!e.startSection(&offset))
return false;
if (!e.writeVarU32(module.funcs().length()))
return false;
for (WasmAstFunc* func : module.funcs()) {
if (!EncodeFunc(e, *func))
return false;
}
e.finishSection(offset);
return true;
}
static bool
EncodeExportSection(Encoder& e, WasmAstModule& module)
{
if (module.exports().empty())
return true;
if (!e.writeCString(ExportSection))
return false;
size_t offset;
if (!e.startSection(&offset))
return false;
if (!e.writeVarU32(module.exports().length()))
return false;
for (WasmAstExport* exp : module.exports()) {
if (!EncodeExport(e, *exp))
return false;
}
e.finishSection(offset);
return true;
}
static bool
EncodeDeclarationSection(Encoder& e, WasmAstModule& module)
{
if (module.funcs().empty())
return true;
if (!e.writeCString(DeclSection))
return false;
size_t offset;
if (!e.startSection(&offset))
return false;
if (!e.writeVarU32(module.funcs().length()))
return false;
for (WasmAstFunc* func : module.funcs()) {
if (!e.writeVarU32(func->sigIndex()))
return false;
}
e.finishSection(offset);
return true;
}