void Literal(SingleNodeTree parent)
{
if (la.kind == 2)
{
Get();
parent.SetChild(new LiteralExpression(t.val));
}
else if (la.kind == 3)
{
Get();
parent.SetChild(new LiteralExpression(t.val.Substring(1, t.val.Length - 2), true));
}
else if (la.kind == 4)
{
Get();
parent.SetChild(new ValueExpression(Int32.Parse(t.val.Substring(1))));
}
else if (la.kind == 1)
{
Get();
parent.SetChild(new LiteralExpression(t.val));
}
else
{
SynErr(50);
}
}
void Condition(SingleNodeTree parent)
{
SelectorTypes selectorType; ModifierTypes modifierType;
if (FollowedByColon())
{
Selector(out selectorType,
out modifierType);
SelectorExpression selector = new SelectorExpression(selectorType, modifierType, t.val);
if (la.kind == 6)
{
ComplexCondition(parent, selector);
}
else if (StartOf(3))
{
parent.SetChild(selector);
Literal(selector);
}
else
{
SynErr(45);
}
}
else if (StartOf(3))
{
SelectorExpression nestedSelector = new SelectorExpression(SelectorTypes.Unspecified, ModifierTypes.Equals, t.val); parent.SetChild(nestedSelector);
Literal(nestedSelector);
}
else
{
SynErr(46);
}
}
void ConditionGroup(SingleNodeTree parent)
{
ConditionGroup group = new ConditionGroup(); parent.SetChild(group); ExpressionTreeBase addTo = group; SingleNodeTree condition = null; ConditionalExpression lastOperation = null;
Expect(6);
while (StartOf(2))
{
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
if (la.kind == 5)
{
Get();
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (StartOf(3))
{
Condition(lastOperation);
}
else if (la.kind == 6)
{
ConditionGroup(lastOperation);
}
else
{
SynErr(47);
}
if (la.kind == 9 || la.kind == 10)
{
Operation(out lastOperation);
}
else
{
lastOperation = null;
}
}
if (lastOperation != null && lastOperation.Child == null)
{
SemErr("Invalid Condition");
}
Expect(7);
}
void ComplexCondition(SingleNodeTree parent, SelectorExpression selector)
{
ConditionGroup group = new ConditionGroup(); parent.SetChild(group); ExpressionTreeBase addTo = group; SingleNodeTree condition = null; ConditionalExpression lastOperation = null;
Expect(6);
while (StartOf(2))
{
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
selector = new SelectorExpression(selector.Field, ModifierTypes.Equals, selector.Path);
if (la.kind == 5)
{
Get();
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (la.kind == 6)
{
ComplexCondition(lastOperation, selector);
}
else if (StartOf(3))
{
SelectorExpression nestedSelector = new SelectorExpression(selector.Field, ModifierTypes.Equals, selector.Path); MultiAdd(lastOperation, nestedSelector);
Literal(nestedSelector);
}
else
{
SynErr(49);
}
if (la.kind == 9 || la.kind == 10)
{
Operation(out lastOperation);
}
else
{
lastOperation = null;
}
}
Expect(7);
}
void Literal(SingleNodeTree parent) {
if (la.kind == 2) {
Get();
parent.SetChild(new LiteralExpression(t.val));
} else if (la.kind == 3) {
Get();
parent.SetChild(new LiteralExpression(t.val.Substring(1, t.val.Length - 2), true));
} else if (la.kind == 4) {
Get();
parent.SetChild(new ValueExpression(Int32.Parse(t.val.Substring(1))));
} else if (la.kind == 1) {
Get();
parent.SetChild(new LiteralExpression(t.val));
} else SynErr(50);
}
void ComplexCondition(SingleNodeTree parent, SelectorExpression selector) {
ConditionGroup group = new ConditionGroup(); parent.SetChild(group); ExpressionTreeBase addTo = group; SingleNodeTree condition = null; ConditionalExpression lastOperation = null;
Expect(6);
while (StartOf(2)) {
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
selector = new SelectorExpression(selector.Field, ModifierTypes.Equals, selector.Path);
if (la.kind == 5) {
Get();
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (la.kind == 6) {
ComplexCondition(lastOperation, selector);
} else if (StartOf(3)) {
SelectorExpression nestedSelector = new SelectorExpression(selector.Field, ModifierTypes.Equals, selector.Path); MultiAdd(lastOperation, nestedSelector);
Literal(nestedSelector);
} else SynErr(49);
if (la.kind == 9 || la.kind == 10) {
Operation(out lastOperation);
}
else { lastOperation = null; }
}
Expect(7);
}
void ConditionGroup(SingleNodeTree parent) {
ConditionGroup group = new ConditionGroup(); parent.SetChild(group); ExpressionTreeBase addTo = group; SingleNodeTree condition = null; ConditionalExpression lastOperation = null;
Expect(6);
while (StartOf(2)) {
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
if (la.kind == 5) {
Get();
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (StartOf(3)) {
Condition(lastOperation);
} else if (la.kind == 6) {
ConditionGroup(lastOperation);
} else SynErr(47);
if (la.kind == 9 || la.kind == 10) {
Operation(out lastOperation);
}
else { lastOperation = null; }
}
if (lastOperation != null && lastOperation.Child == null) SemErr("Invalid Condition");
Expect(7);
}
void Condition(SingleNodeTree parent) {
SelectorTypes selectorType; ModifierTypes modifierType;
if (FollowedByColon()) {
Selector(out selectorType,
out modifierType);
SelectorExpression selector = new SelectorExpression(selectorType, modifierType, t.val);
if (la.kind == 6) {
ComplexCondition(parent, selector);
} else if (StartOf(3)) {
parent.SetChild(selector);
Literal(selector);
} else SynErr(45);
} else if (StartOf(3)) {
SelectorExpression nestedSelector = new SelectorExpression(SelectorTypes.Unspecified, ModifierTypes.Equals, t.val); parent.SetChild(nestedSelector);
Literal(nestedSelector);
} else SynErr(46);
}