private static void ParseField(Lexer.Lexer lexer, out Exp k, out Exp v)
{
k = null;
v = null;
if (lexer.LookAhead() == ETokenType.SepLBracket)
{
lexer.NextToken(out _, out _, out _);
k = ParseExp(lexer);
lexer.NextTokenOfKind(ETokenType.SepRBracket, out _, out _);
lexer.NextTokenOfKind(ETokenType.OpAssign, out _, out _);
v = ParseExp(lexer);
return;
}
var exp = ParseExp(lexer);
if (exp is NameExp nameExp)
{
if (lexer.LookAhead() == ETokenType.OpAssign)
{
lexer.NextToken(out _, out _, out _);
k = new StringExp {
Line = nameExp.Line, Str = nameExp.Name
};
v = ParseExp(lexer);
return;
}
}
v = exp;
}
private static Exp FinishPrefixExp(Lexer.Lexer lexer, Exp exp)
{
while (true)
{
switch (lexer.LookAhead())
{
case ETokenType.SepLBracket:
{
lexer.NextToken(out _, out _, out _);
var keyExp = ParseExp(lexer);
lexer.NextTokenOfKind(ETokenType.SepRBracket, out _, out _);
exp = new TableAccessExp
{
LastLine = lexer.Line,
PrefixExp = exp,
KeyExp = keyExp
};
break;
}
case ETokenType.SepDot:
{
lexer.NextToken(out _, out _, out _);
lexer.NextIdentifier(out var line, out var name);
var keyExp = new StringExp
{
Line = line,
Str = name
};
exp = new TableAccessExp
{
LastLine = line,
PrefixExp = exp,
KeyExp = keyExp
};
break;
}
case ETokenType.SepColon:
case ETokenType.SepLParen:
case ETokenType.SepLCurly:
case ETokenType.String:
{
exp = FinishFuncCallExp(lexer, exp);
break;
}
default:
return(exp);
}
}
}
private static void ParseFuncName(Lexer.Lexer lexer, out Exp exp, out bool hasColon)
{
hasColon = false;
lexer.NextIdentifier(out var line, out var name);
exp = new NameExp {
Line = line, Name = name
};
while (lexer.LookAhead() == ETokenType.SepDot)
{
lexer.NextToken(out _, out _, out _);
lexer.NextIdentifier(out line, out name);
var idx = new StringExp {
Line = line, Str = name
};
exp = new TableAccessExp
{
LastLine = line,
KeyExp = idx,
PrefixExp = exp,
};
}
if (lexer.LookAhead() == ETokenType.SepColon)
{
lexer.NextToken(out _, out _, out _);
lexer.NextIdentifier(out line, out name);
var idx = new StringExp {
Line = line, Str = name
};
exp = new TableAccessExp
{
LastLine = line,
PrefixExp = exp,
KeyExp = idx,
};
hasColon = true;
}
}
public void StringExp(StringExp e)
{
e.ExpType = typeof(CList);
}
public void StringExp(StringExp e)
{
il.Emit(OpCodes.Ldstr, (e.Value));
il.Emit(OpCodes.Call, ((typeof(LispRuntime)).GetMethod("Init")));
}
