void variable(out Compiler.IfVariable variable)
{
Scanner.ignore_space = false;
while (la.kind == 4) {
Get();
}
Expect(3);
variable = Context.GetVariable( t.val );
while (la.kind == 6 || la.kind == 42 || la.kind == 43) {
if (la.kind == 42) {
instance_member();
} else if (la.kind == 43) {
class_member();
} else {
struct_field();
}
}
if (la.kind == 7) {
Get();
Expect(1);
}
if (la.kind == 40) {
Get();
Expect(1);
Expect(41);
}
while (la.kind == 4) {
Get();
}
Scanner.ignore_space = true;
}
void value(out Compiler.IfValue value)
{
value = null; IfVariable var=null;
if (la.kind == 1 || la.kind == 2) {
literal(out value);
} else if (la.kind == 3 || la.kind == 4) {
variable(out var);
value = var;
} else SynErr(56);
}
void term(out Compiler.IfExpression e)
{
string op; IfExpression e2; e=null;
factor(out e);
while (la.kind == 8 || la.kind == 9) {
multiply(out op);
factor(out e2);
e = new BinaryExpression(e, op, e2);
}
}
void literal(out Compiler.IfValue value)
{
value = null;
if (la.kind == 2) {
Get();
value = new Compiler.StringLiteral( t.val.Substring(1,t.val.Length-2) );
} else if (la.kind == 1) {
Get();
value = new Compiler.IntegerLiteral( Convert.ToInt32( t.val) );
} else SynErr(57);
}
void factor(out Compiler.IfExpression e)
{
Compiler.IfValue val; e=null;
if (StartOf(6)) {
value(out val);
e = new ExpressionLeaf( val );
} else if (la.kind == 40) {
Get();
expression(out e);
Expect(41);
} else SynErr(60);
}
void expression(out Compiler.IfExpression e)
{
e=null; string op; IfExpression e2;
if (la.kind == 6) {
Get();
term(out e2);
e = new UnaryExpression ("-", e2 );
} else if (StartOf(5)) {
term(out e);
} else SynErr(58);
while (la.kind == 6 || la.kind == 7) {
addition(out op);
term(out e2);
e = new BinaryExpression(e, op, e2);
}
}