private AstExpr ParseRef()
{
AstExpr varRef = new AstVarRef {
StName = Expect(Ktoken.Id).St
};
if (Accept(Ktoken.Lbracket))
{
var astIndex = new AstIndex {
exprLeft = varRef, exprRight = ParseExpr()
};
Expect(Ktoken.Rbracket);
return(astIndex);
}
if (Accept(Ktoken.Dot))
{
var varRefRight = new AstVarRef {
StName = Expect(Ktoken.Id).St
};
varRef = new AstDot {
varLeft = (AstVarRef)varRef, varRight = varRefRight
};
}
if (FCurrent(Ktoken.Lparen))
{
return new AstCall {
exprFunc = varRef, rgexprParam = ParseArgumentList().ToArray()
}
}
;
return(varRef);
}
private void CompileVarRef(AstVarRef node, Syt syt, StringBuilder sb)
{
var syte = syt.Lookup(node.StName);
if (syte.Ksyte.FIn(Ksyte.Field, Ksyte.Arg, Ksyte.Var, Ksyte.Static))
{
sb.AppendLine("push {0} {1}".StFormat(StSegment(syte.Ksyte), syte.Isyte));
}
else
{
throw new Erparse(node, "not an rvalue");
}
}