public class MetaGrammarBindings {
/** A grammar (a set of nonterminals) */
- public static class GrammarNode extends HashMap<String,NonTerminalNode> {
- public @bind.as("Grammar") GrammarNode(NonTerminalNode[] nonterminals) {
+ public static class GrammarNode extends HashMap<String,NonTerminalNode> implements NonTerminalSource {
+ public NonTerminalNode[] getNonTerminals() {
+ return (NonTerminalNode[])values().toArray(new NonTerminalNode[0]);
+ }
+ public GrammarNode(NonTerminalNode[] nonterminals) {
for(NonTerminalNode nt : nonterminals) {
if (nt==null) continue;
if (this.get(nt.name)!=null)
this.put(nt.name, nt);
}
}
+ public @bind.as("Grammar") GrammarNode(Object[] nt) {
+ add(nt);
+ }
+ private void add(Object[] obs) {
+ for(Object o : obs) {
+ if (o==null) continue;
+ else if (o instanceof Object[]) add((Object[])o);
+ else if (o instanceof NonTerminalNode) {
+ NonTerminalNode nt = (NonTerminalNode)o;
+ if (this.get(nt.name)!=null)
+ throw new RuntimeException("duplicate definition of nonterminal \""+nt.name+"\"");
+ this.put(nt.name, nt);
+ }
+ else if (o instanceof NonTerminalSource) add(((NonTerminalSource)o).getNonTerminals());
+ }
+ }
public String toString() {
String ret = "[ ";
for(NonTerminalNode nt : values()) ret += nt + ", ";
}
}
- public static @bind.as("#import") NonTerminalNode poundimport(String fileName) {
+ public static @bind.as("#import") GrammarNode poundimport(String fileName) {
System.err.println("#import " + fileName);
- return null;
+ try {
+ Tree t = new CharParser(MetaGrammar.make()).parse(new FileInputStream(fileName)).expand1();
+ Tree.TreeFunctor<Object,Object> red = (Tree.TreeFunctor<Object,Object>)t.head();
+ return (MetaGrammarBindings.GrammarNode)red.invoke(t);
+ } catch (Exception e) {
+ e.printStackTrace();
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static interface NonTerminalSource {
+ public NonTerminalNode[] getNonTerminals();
}
- public static class NonTerminalNode extends UnionNode {
+ public static class NonTerminalNode extends UnionNode implements NonTerminalSource {
public boolean rep;
public String name = null;
public String sep = null;
+ public NonTerminalNode[] getNonTerminals() { return new NonTerminalNode[] { this }; }
public @bind.as("NonTerminal") NonTerminalNode(@bind.arg String name, @bind.arg Seq[][] sequences) { this(name, sequences, false); }
public NonTerminalNode(String name, Seq[][] sequences, boolean rep) { this(name, sequences, rep, null); }
public NonTerminalNode(String name, Seq[][] sequences, boolean rep, String sep) {
Union meta = MetaGrammar.make(res, "s");
System.err.println("parsing " + s[1]);
- SequenceInputStream sis = new SequenceInputStream(new FileInputStream(s[0]), new FileInputStream(s[1]));
- res = new CharParser(meta).parse(sis).expand1();
+ //SequenceInputStream sis = new SequenceInputStream(new FileInputStream(s[0]), new FileInputStream(s[1]));
+ res = new CharParser(meta).parse(new FileInputStream(s[1])).expand1();
Union testcasegrammar = MetaGrammar.make(res, "ts", new TestCaseMaker());
if (testcasegrammar==null) return;