static bool
RenderSignature(WasmRenderContext& c, const AstSig& sig, const AstNameVector* maybeLocals = nullptr)
{
uint32_t paramsNum = sig.args().length();
if (maybeLocals) {
for (uint32_t i = 0; i < paramsNum; i++) {
if (!c.buffer.append(" (param "))
return false;
const AstName& name = (*maybeLocals)[i];
if (!name.empty()) {
if (!RenderName(c, name))
return false;
if (!c.buffer.append(" "))
return false;
}
ValType arg = sig.args()[i];
if (!RenderValType(c, arg))
return false;
if (!c.buffer.append(")"))
return false;
}
} else if (paramsNum > 0) {
if (!c.buffer.append(" (param"))
return false;
for (uint32_t i = 0; i < paramsNum; i++) {
if (!c.buffer.append(" "))
return false;
ValType arg = sig.args()[i];
if (!RenderValType(c, arg))
return false;
}
if (!c.buffer.append(")"))
return false;
}
if (sig.ret() != ExprType::Void) {
if (!c.buffer.append(" (result "))
return false;
if (!RenderExprType(c, sig.ret()))
return false;
if (!c.buffer.append(")"))
return false;
}
return true;
}
static bool
AstDecodeCallArgs(AstDecodeContext& c, uint32_t arity, const AstSig& sig, AstExprVector* funcArgs)
{
if (arity != sig.args().length())
return c.iter().fail("call arity out of range");
const AstValTypeVector& args = sig.args();
uint32_t numArgs = args.length();
if (!funcArgs->resize(numArgs))
return false;
for (size_t i = 0; i < numArgs; ++i) {
ValType argType = args[i];
AstDecodeStackItem item;
if (!c.iter().readCallArg(argType, numArgs, i, &item))
return false;
(*funcArgs)[i] = item.expr;
}
return c.iter().readCallArgsEnd(numArgs);
}
static bool
AstDecodeCallReturn(AstDecodeContext& c, const AstSig& sig)
{
return c.iter().readCallReturn(sig.ret());
}
