- hash Long->long: it's all bogus
* pick back up cleaning up end of Parser.java (Reduction)
- * some weird edge cases; check last regression test, 'make doc'
+ - [more] sensible tree-printout
- - Sensible tree-printout
- - make Tib.Block extend Tree<>
+ - revamp Tib.Block (do it all in the parser using indent/dedent?)
- more natural phrasing of metagrammar?
-
- finalize metagrammar and rdp-op's
- - Deal with the problem of zero-rep productions and whitespace insertion
-
- should Union.add() be there?
- should Atom.top() be there?
- - fix the location stuff, it's broken
- decent/better error messages
- - substring parsing required
+ - fix the location stuff, it's broken
- write some grammars
- Java grammar
- URL (RFC)
- RFC2822 (email message/headers)
- - PL-PATR?
______________________________________________________________________________
Soon
+ - substring parsing for better error messages
+
- clean up the whole Walk situation
- "lift" cases:
______________________________________________________________________________
Later
+ - Partly-Linear-PATR? (O(n^6) unification grammar)
+
- Implement a k-token peek buffer (for each state, see if it "dead
ends" during the next k Phases based solely on state -- ignoring
result SPPF)
import java.util.*;
import java.lang.reflect.*;
-//////////////////////////////////////////////////////////////////////////////
-// TODO:
-//
-// - fix public/package/private status
-//
-
-//////////////////////////////////////////////////////////////////////////////
-// Optimizations to add
-//
-// ** NOTE: not all of these are appropriate for this class -- it is
-// simply a list of optimizations not implemented. This
-// class is meant to remain simple and easy to understand;
-// optimizations which obscure that do not belong here (they
-// should go into the compiled version instead)
-
/** implements Tomita's Graph Structured Stack */
class GSS {
private void newNode2(Node p, Node parent, Forest pending, Parser.Table.State state, boolean fromEmptyReduction) {
p.holder.merge(pending);
if (p.parents().contains(parent)) return;
+ if (p.fe && p.phase() != parent.phase()) throw new Error("yep yep");
+ if (!p.fe && p.phase() == parent.phase()) throw new Error("yep yep2");
p.parents().add(parent, true);
if (p!=parent && !fromEmptyReduction) p.queueReductions(parent);
}
//return;
} while(false);
- Node n = new Node(parent, pending, state); // ALLOC
+ Node n = new Node(parent, pending, state, fromEmptyReduction); // ALLOC
n.queueEmptyReductions();
if (!fromEmptyReduction) n.queueReductions(parent);
}
}
public void invoke(Parser.Table.State st, Forest result, Node n) {
- next.newNode(n, result, st, true);
+ next.newNode(n, result, st, false);
}
private Phase next = null;
public FastSet<Node> parents() { return this; }
public void queueReductions() {
+ if (!reducing) return;
if (allqueued) return;
allqueued = true;
int where = parents().size();
state.invokeReductions(token, this, null, null);
}
- private Node(Node parent, Forest pending, Parser.Table.State state) {
+ private boolean fe;
+ private Node(Node parent, Forest pending, Parser.Table.State state, boolean fe) {
+ this.fe = fe;
this.state = state;
Phase start = parent==null ? null : parent.phase();
if (pending != null) this.holder().merge(pending);