import java.lang.reflect.*;
import java.io.*;
-/** The java classes typically used to represent a parsed grammar AST */
+/** The java classes typically used to represent a parsed grammar AST; each inner class is a type of AST node. */
public class MetaGrammarBindings {
/** A grammar (a set of nonterminals) */
}
}
- public abstract static class Un extends El {
+ public abstract static class UnionNode extends ElementNode {
public Seq[][] sequences;
public void build(MetaGrammar.Context cx, Union u) {
HashSet<Sequence> bad2 = new HashSet<Sequence>();
}
}
- public static class NonTerminal extends Un {
+ public static class NonTerminal extends UnionNode {
public boolean rep;
public String name = null;
public String sep = null;
return new NonTerminal(name, sequences, true, sep);
}
- public static class AnonUn extends Un {
- public @bind.as("(") AnonUn(Seq[][] sequences) {
+ public static class AnonUnionNode extends UnionNode {
+ public @bind.as("(") AnonUnionNode(Seq[][] sequences) {
this.sequences = sequences;
}
public Element build(MetaGrammar.Context cx) {
public char first;
public char last;
}
- public static abstract class El {
+ public static abstract class ElementNode {
public String getLabel() { return null; }
public String getOwnerTag() { return null; }
public boolean drop() { return false; }
public abstract Element build(MetaGrammar.Context cx);
}
- public static class Drop extends El {
- public El e;
- public Drop(El e) { this.e = e; }
+ public static class Drop extends ElementNode {
+ public ElementNode e;
+ public Drop(ElementNode e) { this.e = e; }
public String getLabel() { return null; }
public boolean drop() { return true; }
public String getOwnerTag() { return e.getOwnerTag(); }
public Element build(MetaGrammar.Context cx) { return e.build(cx); }
}
- public static class Label extends El {
+ public static class Label extends ElementNode {
public String label;
- public El e;
- public Label(String label, El e) { this.e = e; this.label = label; }
+ public ElementNode e;
+ public Label(String label, ElementNode e) { this.e = e; this.label = label; }
public String getLabel() { return label; }
public String getOwnerTag() { return e.getOwnerTag(); }
public Element build(MetaGrammar.Context cx) { return e.build(cx); }
public static /*abstract*/ class Seq {
HashSet<Seq> and = new HashSet<Seq>();
HashSet<Seq> not = new HashSet<Seq>();
- El[] elements;
- El follow;
+ ElementNode[] elements;
+ ElementNode follow;
String tag = null;
boolean lame;
- public void append(El e) {
- El[] elements = new El[this.elements.length+1];
+ public void append(ElementNode e) {
+ ElementNode[] elements = new ElementNode[this.elements.length+1];
System.arraycopy(this.elements, 0, elements, 0, this.elements.length);
this.elements = elements;
elements[elements.length-1] = e;
}
- public Seq(El e) { this(new El[] { e }); }
- public Seq(El[] elements) { this.elements = elements; }
+ public Seq(ElementNode e) { this(new ElementNode[] { e }); }
+ public Seq(ElementNode[] elements) { this.elements = elements; }
public Seq tag(String tag) { this.tag = tag; return this; }
- public Seq follow(El follow) { this.follow = follow; return this; }
+ public Seq follow(ElementNode follow) { this.follow = follow; return this; }
public Seq dup() {
Seq ret = new Seq(elements);
ret.and.addAll(and);
}
public Seq and(Seq s) { and.add(s); s.lame = true; return this; }
public Seq andnot(Seq s) { not.add(s); s.lame = true; return this; }
- public Seq separate(El sep) {
- El[] elements = new El[this.elements.length * 2 - 1];
+ public Seq separate(ElementNode sep) {
+ ElementNode[] elements = new ElementNode[this.elements.length * 2 - 1];
for(int i=0; i<this.elements.length; i++) {
elements[i*2] = this.elements[i];
if (i<this.elements.length-1)
}
public static @bind.as("&") Seq and2(Seq s, Seq a) { return s.and(a); }
public static @bind.as("&~") Seq andnot2(Seq s, Seq a) { return s.andnot(a); }
- public static @bind.as("->") Seq arrow(Seq s, El e) { return s.follow(e); }
+ public static @bind.as("->") Seq arrow(Seq s, ElementNode e) { return s.follow(e); }
public static @bind.as("::") Seq tag(String tagname, Seq s) { return s.tag(tagname); }
- public static @bind.as("/") Seq slash(Seq s, El e) { return s.separate(e); }
+ public static @bind.as("/") Seq slash(Seq s, ElementNode e) { return s.separate(e); }
- public static Seq seq(El[] elements) { return new Seq(elements); }
- public static @bind.as("Elements") Seq seq2(El[] elements) { return new Seq(elements); }
+ public static Seq seq(ElementNode[] elements) { return new Seq(elements); }
+ public static @bind.as("Elements") Seq seq2(ElementNode[] elements) { return new Seq(elements); }
public static @bind.as Seq psx(Seq s) { return s; }
- public static @bind.as(":") El colon(String s, El e) { return new Label(s, e); }
+ public static @bind.as(":") ElementNode colon(String s, ElementNode e) { return new Label(s, e); }
public static @bind.as(")") void close(String foo) { throw new Error("not supported"); }
- public static @bind.as("()") El epsilon() { return new Constant(Union.epsilon); }
+ public static @bind.as("()") ElementNode epsilon() { return new Constant(Union.epsilon); }
- public static @bind class NonTerminalReference extends El {
+ public static @bind class NonTerminalReference extends ElementNode {
public @bind.arg String nonTerminal;
public Element build(MetaGrammar.Context cx) { return cx.get(nonTerminal); }
}
public boolean drop() { return true; }
}
- public static class CharClass extends El {
+ public static class CharClass extends ElementNode {
Range[] ranges;
public @bind.as("[") CharClass(Range[] ranges) { this.ranges = ranges; }
public Element build(MetaGrammar.Context cx) {
}
}
- public static @bind.as("{") class XTree extends El {
+ public static @bind.as("{") class XTree extends ElementNode {
public @bind.arg Seq body;
public Element build(MetaGrammar.Context cx) {
Union u = new Union();
}
}
- public static class Rep extends El {
- public El e, sep;
+ public static class Rep extends ElementNode {
+ public ElementNode e, sep;
public boolean zero, many, max;
- public Rep(El e, El sep, boolean zero, boolean many, boolean max) {
+ public Rep(ElementNode e, ElementNode sep, boolean zero, boolean many, boolean max) {
this.e = e; this.sep = sep; this.zero = zero; this.many = many; this.max = max;}
public Element build(MetaGrammar.Context cx) {
return (!max)
: Sequence.repeatMaximal(e.build(cx), zero, many, infer(sep.build(cx)), cx.rm.repeatTag());
}
}
- public static class Constant extends El {
+ public static class Constant extends ElementNode {
Element constant;
public Constant(Element constant) { this.constant = constant; }
public Element build(MetaGrammar.Context cx) { return constant; }
}
- public abstract static class PostProcess extends El {
- El e;
- public PostProcess(El e) { this.e = e; }
+ public abstract static class PostProcess extends ElementNode {
+ ElementNode e;
+ public PostProcess(ElementNode e) { this.e = e; }
public Element build(MetaGrammar.Context cx) { return postProcess(e.build(cx)); }
public abstract Element postProcess(Element e);
}
// FIXME: it would be nice if we could hoist this into "Rep"
- public static @bind.as("++") El plusmax(final El e) { return new Rep(e, null, false, true, true); }
- public static @bind.as("+") El plus(final El e) { return new Rep(e, null, false, true, false); }
- public static @bind.as("++/") El plusmaxfollow(final El e, final El sep) { return new Rep(e, sep, false, true, true); }
- public static @bind.as("+/") El plusfollow(final El e, final El sep) { return new Rep(e, sep, false, true, false); }
- public static @bind.as("**") El starmax(final El e) { return new Rep(e, null, true, true, true); }
- public static @bind.as("*") El star(final El e) { return new Rep(e, null, true, true, false); }
- public static @bind.as("**/") El starmaxfollow(final El e, final El sep) { return new Rep(e, sep, true, true, true); }
- public static @bind.as("*/") El starfollow(final El e, final El sep) { return new Rep(e, sep, true, true, false); }
- public static @bind.as("?") El question(final El e) { return new Rep(e, null, true, true, false); }
+ public static @bind.as("++") ElementNode plusmax(final ElementNode e) { return new Rep(e, null, false, true, true); }
+ public static @bind.as("+") ElementNode plus(final ElementNode e) { return new Rep(e, null, false, true, false); }
+ public static @bind.as("++/") ElementNode plusmaxfollow(final ElementNode e, final ElementNode sep) { return new Rep(e, sep, false, true, true); }
+ public static @bind.as("+/") ElementNode plusfollow(final ElementNode e, final ElementNode sep) { return new Rep(e, sep, false, true, false); }
+ public static @bind.as("**") ElementNode starmax(final ElementNode e) { return new Rep(e, null, true, true, true); }
+ public static @bind.as("*") ElementNode star(final ElementNode e) { return new Rep(e, null, true, true, false); }
+ public static @bind.as("**/") ElementNode starmaxfollow(final ElementNode e, final ElementNode sep) { return new Rep(e, sep, true, true, true); }
+ public static @bind.as("*/") ElementNode starfollow(final ElementNode e, final ElementNode sep) { return new Rep(e, sep, true, true, false); }
+ public static @bind.as("?") ElementNode question(final ElementNode e) { return new Rep(e, null, true, true, false); }
- public static @bind.as("!") El bang(final El e) { return new Drop(e); }
+ public static @bind.as("!") ElementNode bang(final ElementNode e) { return new Drop(e); }
- public static @bind.as("^") El caret(final String s) {
+ public static @bind.as("^") ElementNode caret(final String s) {
return new Drop(new Constant(CharRange.string(s)) {
public String getOwnerTag() { return s; }
});
}
- public static @bind.as("~") El tilde(final El e) {
+ public static @bind.as("~") ElementNode tilde(final ElementNode e) {
return new PostProcess(e) {
public Element postProcess(Element e) {
return infer((Topology<Character>)Atom.toAtom(e).complement());
} }; }
- public static @bind.as("^^") void doublecaret(final El e) { throw new Error("not implemented"); }
+ public static @bind.as("^^") void doublecaret(final ElementNode e) { throw new Error("not implemented"); }
- //public static @bind.as("(") El subexpression(Seq[][] rhs) { return new NonTerminal(rhs); }
+ //public static @bind.as("(") ElementNode subexpression(Seq[][] rhs) { return new NonTerminal(rhs); }
public static @bind.as("Word") String word(String s) { return s; }
public static @bind.as("Quoted") String quoted(String s) { return s; }
projects / sbp.git / blobdiff