System.err.println("usage: java " + MetaGrammar.class.getName() + " grammarfile.g com.yourdomain.package.ClassName");
System.exit(-1);
}
- //StringBuffer sbs = new StringBuffer();
- //((MetaGrammar)new MetaGrammar().walk(meta)).nt.get("e").toString(sbs);
- //System.err.println(sbs);
String className = args[1].substring(args[1].lastIndexOf('.')+1);
String packageName = args[1].substring(0, args[1].lastIndexOf('.'));
String fileName = packageName.replace('.', '/') + "/" + className + ".java";
out.append("\n // DO NOT EDIT STUFF BELOW: IT IS AUTOMATICALLY GENERATED\n");
- /*
- GrammarCompiler m = new GrammarCompiler();
- Tree<String> res = new CharParser(MetaGrammar.make()).parse(new FileInputStream(args[0])).expand1();
- MetaGrammar.Meta.MetaGrammarFile mgf = m.new MetaGrammarFile(res);
- MetaGrammar.BuildContext bc = new MetaGrammar.BuildContext(mgf);
-
- Union meta = mgf.get("s").build(bc);
- Tree t = new CharParser(meta).parse(new FileInputStream(args[0])).expand1();
- */
Tree t = MetaGrammarTree.meta;
Union u = MetaGrammar.make(t, "s");
System.err.println("== parsing with parsed grammar =================================================================================");
t = new CharParser((Union)u).parse(new FileInputStream(args[0])).expand1();
System.out.println(t.toPrettyString());
- //Forest<String> fs = new CharParser(make()).parse(new FileInputStream(args[0]));
- //System.out.println(fs.expand1());
-
- //GraphViz gv = new GraphViz();
- //fs.toGraphViz(gv);
- //FileOutputStream fox = new FileOutputStream("out.dot");
- //gv.dump(fox);
- //fox.close();
t.toJava(out);
out.append("\n // DO NOT EDIT STUFF ABOVE: IT IS AUTOMATICALLY GENERATED\n");
os.close();
}
-
-
- public static class Production {
- public String tag;
- public String nonTerminal;
- public Object[] labels;
- public boolean[] drops;
- public Element[] elements;
- public int count = 0;
- public Production(String tag, String nonTerminal, Element[] elements, Object[] labels, boolean[] drops) {
- this.tag = tag;
- this.elements = elements;
- this.nonTerminal = nonTerminal;
- this.labels = labels;
- this.drops = drops;
- for(int i=0; i<drops.length; i++)
- if (!drops[i])
- count++;
- }
- }
-
- public static class Target {
- public int[] buildSequence(Production p) {
- Annotation[][] annotations = _bindable.getArgAnnotations();
- String[] names = _bindable.getArgNames();
- String name = _bindable.getSimpleName();
- int len = annotations.length;
- int ofs = 0;
- bind.arg[] argtags = new bind.arg[len];
- for(int i=0; i<names.length; i++)
- for(Annotation a : annotations[i+ofs])
- if (a instanceof bind.arg)
- argtags[i+ofs] = (bind.arg)a;
- return Target.this.buildSequence(p, names, argtags);
- }
- private Bindable _bindable;
-
- public Target(Object o) { this(Bindable.create(o)); }
- public Target(Bindable b) { this._bindable = b; }
-
- public String getName() { return _bindable.getSimpleName(); }
- public bind getBind() { return (bind)_bindable.getAnnotation(bind.class); }
- public bind.as getBindAs() { return (bind.as)_bindable.getAnnotation(bind.as.class); }
- public String toString() { return _bindable.getSimpleName(); }
- public boolean isRaw() { return _bindable.isAnnotationPresent(bind.raw.class); }
-
- public boolean isCompatible(Production p) {
- bind.as t = getBindAs();
- if (t != null &&
- (t.value().equals(p.tag) ||
- (t.value().equals("") && getName().equals(p.tag))))
- return buildSequence(p)!=null;
-
- bind b = getBind();
- System.out.println(_bindable.getClass().getSimpleName() + ": " + _bindable.getSimpleName());
- if (b != null && getName().equals(p.tag))
- return buildSequence(p)!=null;
-
- bind.as n = getBindAs();
- if (n != null &&
- (n.value().equals(p.nonTerminal) ||
- (n.value().equals("") && getName().equals(p.nonTerminal))))
- return buildSequence(p)!=null;
-
- if (b != null && getName().equals(p.nonTerminal))
- return buildSequence(p)!=null;
-
- return false;
- }
-
- public int[] buildSequence(Production p, String[] names, bind.arg[] argtags) {
- int argTagged = 0;
- for(int i=0; i<argtags.length; i++)
- if (argtags[i] != null)
- argTagged++;
-
- // FIXME: can be smarter here
- if (names.length==p.count) {
- int[] ret = new int[p.count];
- for(int i=0; i<p.count; i++) ret[i] = i;
- return ret;
- } else if (argTagged==p.count) {
- int[] ret = new int[argtags.length];
- int j = 0;
- for(int i=0; i<argtags.length; i++)
- ret[i] = argtags[i]==null ? -1 : (j++);
- return ret;
- } else {
- return null;
- }
- }
- public Sequence makeSequence(Production p) {
- return Sequence.rewritingSequence(new TargetReducer(buildSequence(p), _bindable, isRaw()),
- p.elements, p.labels, p.drops);
- }
-
- }
-
- public static class TargetReducer implements Tree.TreeFunctor<Object,Object>, ToJava {
- private int[] map;
- private Bindable _bindable;
- private boolean _israw;
-
- public void toJava(StringBuffer sb) {
- sb.append("new MetaGrammar.TargetReducer(new int[] {");
- for(int i=0; i<map.length; i++)
- sb.append((i+"")+(i<map.length-1 ? "," : ""));
- sb.append("}, ");
- _bindable.toJava(sb);
- sb.append(", ");
- sb.append(_israw ? "true" : "false");
- sb.append(")");
- }
-
- public TargetReducer(int[] map, Bindable b, boolean raw) {
- this.map = map;
- this._bindable = b;
- this._israw = raw;
- }
- public String toString() { return "reducer-"+_bindable.toString(); }
- public Object invoke(Iterable<Tree<Object>> t) {
- if (_israw) return _bindable.impose(new Object[] { t });
- ArrayList ret = new ArrayList();
- for(Tree tc : t) {
- if (tc.head() != null && tc.head() instanceof Functor)
- ret.add(((Tree.TreeFunctor<Object,Object>)tc.head()).invoke(tc.children()));
- else if (tc.numChildren() == 0)
- ret.add(tc.head());
- else {
- System.err.println("FIXME: don't know what to do about " + tc);
- ret.add(null);
- }
- }
- System.err.println("input tree: " + t);
- Object[] o = (Object[])ret.toArray(new Object[0]);
- int max = 0;
- for(int i=0; i<map.length; i++) max = Math.max(map[i], max);
- Object[] o2 = new Object[max+1];
- for(int i=0; i<o.length; i++) o2[map[i]] = o[i];
- return _bindable.impose(o2);
- }
- }
-
-
- public static Union cached = null;
- public static Union make() {
- /*
- if (cached != null) return cached;
- try {
- GrammarBindingResolver m = new GrammarBindingResolver();
- Tree<String> res = new CharParser(MetaGrammar.make()).parse(new FileInputStream("tests/meta.g")).expand1();
- MetaGrammar.Meta.MetaGrammarFile mgf = m.new MetaGrammarFile(res);
- MetaGrammar.BuildContext bc = new MetaGrammar.BuildContext(mgf);
- Union meta = mgf.get("s").build(bc);
- Tree t = new CharParser(meta).parse(new FileInputStream("tests/meta.g")).expand1();
- return cached = make(t, "s");
- } catch (Exception e) {
- throw new RuntimeException(e);
- }
- */
- return make(MetaGrammarTree.meta, "s");
- }
- public static Union make(Tree t, String s) { return make(t, s, new AnnotationGrammarBindingResolver()); }
+ public static Union make() { return make(MetaGrammarTree.meta, "s"); }
+ public static Union make(Tree t, String s) { return make(t, s, new AnnotationGrammarBindingResolver(MetaGrammarBindings.class)); }
public static Union make(Tree t, String s, GrammarBindingResolver rm) {
- System.out.println("Head: " + t.head());
Tree.TreeFunctor<Object,Object> red = (Tree.TreeFunctor<Object,Object>)t.head();
- MetaGrammarBindings.Grammar g = (MetaGrammarBindings.Grammar)red.invoke(t.children());
- Context cx = new Context(g,rm);
- Union u = null;
- for(MetaGrammarBindings.NonTerminal nt : g.nonterminals) {
- System.out.println(nt.name);
- Union el = (Union)cx.get(nt.name);
- StringBuffer st = new StringBuffer();
- el.toString(st);
- System.err.println(st);
- if (nt.name.equals(s)) u = el;
- }
- return u;
+ MetaGrammarBindings.GrammarNode g = (MetaGrammarBindings.GrammarNode)red.invoke(t.children());
+ return g.build(s, rm);
}
-
-
- public static class Context {
- public HashMap<String,Union> map = new HashMap<String,Union>();
- public MetaGrammarBindings.Grammar grammar;
- public String cnt = null;
- public GrammarBindingResolver rm;
- public Context(MetaGrammarBindings.Grammar g, GrammarBindingResolver rm) {
- this.grammar = g;
- this.rm = rm;
- }
- public Union build() {
- Union ret = null;
- for(MetaGrammarBindings.NonTerminal nt : grammar.nonterminals) {
- Union u = get(nt.name);
- if ("s".equals(nt.name))
- ret = u;
- }
- return ret;
- }
- public Context(Tree t, GrammarBindingResolver rm) {
- this.rm = rm;
- Tree.TreeFunctor<Object,Object> red = (Tree.TreeFunctor<Object,Object>)t.head();
- this.grammar = (MetaGrammarBindings.Grammar)red.invoke(t.children());
- }
- public Union peek(String name) { return map.get(name); }
- public void put(String name, Union u) { map.put(name, u); }
- public Union get(String name) {
- Union ret = map.get(name);
- if (ret != null) return ret;
- ret = new Union(name);
- map.put(name, ret);
- MetaGrammarBindings.NonTerminal nt = grammar.get(name);
- if (nt==null) {
- System.err.println("*** warning could not find " + name);
- } else {
- String old = cnt;
- cnt = name;
- nt.build(this, ret);
- cnt = old;
- }
- return ret;
- }
-
- }
- /*private*/ static Atom infer(Element e) { return infer((Topology<Character>)Atom.toAtom(e)); }
- /*private*/ static Atom infer(Topology<Character> t) { return new CharRange(new CharTopology(t)); }
}
projects / sbp.git / blobdiff