-// Copyright 2005 the Contributors, as shown in the revision logs.
-// Licensed under the Apache Public Source License 2.0 ("the License").
-// You may not use this file except in compliance with the License.
+// Copyright 2006 all rights reserved; see LICENSE file for BSD-style license
package edu.berkeley.sbp.tib;
import edu.berkeley.sbp.*;
import java.util.*;
import java.io.*;
-// TODO: multiple {{ }} for superquotation
-// TODO: strings
-// TODO: comments
-
/**
* A slow, ugly, inefficient, inelegant, ad-hoc parser for TIB files.
*
*/
public class Tib implements Input<Character> {
+ public String showRegion(Region<Character> r, int max) { return ""; }
+
public Tib(String s) throws IOException { this(new StringReader(s)); }
public Tib(Reader r) throws IOException { this(new BufferedReader(r)); }
public Tib(InputStream is) throws IOException { this(new BufferedReader(new InputStreamReader(is))); }
public Tib(BufferedReader br) throws IOException {
this.br = br;
istack.add(-1);
- //cur = parse(br);
- //System.out.println("\rparsing: \"" + cur.toString(0, -1) + "\"");
}
-
+ public String getName() { return null; }
private String s = "";
int pos = 0;
int spos = 0;
int _row = 1;
int _col = 0;
- public Input.Location getLocation() { return new CartesianLocation(_row, _col); }
+ int _scalar = 0;
+ public Input.Location getLocation() { return new Cartesian.Location(_col, _row, _scalar); }
private BufferedReader br;
- char left = CharRange.left;
- char right = CharRange.right;
+ char left = CharAtom.left;
+ char right = CharAtom.right;
boolean waiting = false;
char waitingChar = ' ';
boolean indenting = true;
int indentation = 0;
private ArrayList<Integer> istack = new ArrayList<Integer>();
- public Character next(int numstates, int resets, int waits) throws IOException {
- Character ret = nextc(numstates, resets);
- if (ret==null) return null;
- else if (ret==left) System.out.print("\033[31m{\033[0m");
- else if (ret==right) System.out.print("\033[31m}\033[0m");
- else System.out.print(ret);
+ private static boolean debug = "true".equals(System.getProperty("tib.debug", "false"));
+ public Character next() throws IOException {
+ Character ret = nextc();
+ if (debug) {
+ if (ret==null) return null;
+ else if (ret==left) System.err.print("\033[31m{\033[0m");
+ else if (ret==right) System.err.print("\033[31m}\033[0m");
+ else System.err.print(ret);
+ }
return ret;
}
Character waitingBrace = null;
- public Character nextc(int numstates, int resets) throws IOException {
+ public Character nextc() throws IOException {
char c;
if (waitingBrace != null) {
Character ret = waitingBrace;
return null;
}
c = (char)i;
+ _scalar++;
+ if (c=='\n') { _row++; _col=0; }
+ else _col++;
}
- if (c=='\n') { _row++; _col=0; }
- else _col++;
if (indenting) {
if (c==' ') { indentation++; return done(c); }
- if (c=='\n') { indentation = 0; if (blank) return nextc(numstates, resets); blank = true; waiting = true; waitingChar='\n'; return '\n'; }
+ if (c=='\n') { indentation = 0; if (blank) return nextc(); blank = true; waiting = true; waitingChar='\n'; return '\n'; }
int last = istack.size()==0 ? -1 : istack.get(istack.size()-1);
if (indentation==last) {
if (blank) {
}
boolean blank = false;
- // Grammar //////////////////////////////////////////////////////////////////////////////
-
- public static class Grammar extends MetaGrammar {
- private int anon = 0;
- private final Element ws = Repeat.maximal0(getNonTerminal("w"));
- public Grammar() { dropAll.add(ws); }
- public Object walk(Tree<String> tree) {
- String head = tree.head();
- if (tree.numChildren()==0) return super.walk(tree);
- if ("{".equals(head)) {
- Union u = new Union("???");
- Union u2 = ((PreSequence)walk(tree, 0)).sparse(ws).buildUnion();
- u2.add(Sequence.singleton(new Element[] { u }, 0));
- return anonymousNonTerminal(new Sequence[][] {
- new Sequence[] {
- Sequence.singleton(new Element[] { CharRange.leftBrace,
- ws,
- u2,
- ws,
- CharRange.rightBrace
- }, 2)
- }
- });
- }
- return super.walk(tree);
- }
- }
-
- /*
-public class Braces extends Union {
-
- private static final Element left = string("{");
- private static final Element right = string("}");
-
- public static String join(Object[] e) {
- StringBuffer ret = new StringBuffer();
- for(int i=0; i<e.length; i++) {
- if (i>0) ret.append(" ");
- ret.append(e[i]);
- }
- return ret.toString();
- }
-
- public Braces(Element[] e, Element sep) {
- super("{"+join(e)+"}");
- Element[] e2 = new Element[sep == null ? e.length+2 : e.length + 4];
- e2[0] = left;
- e2[e2.length-1] = right;
- if (sep != null) {
- e2[1] = sep;
- e2[e2.length-2] = sep;
- }
- for(int i=0; i<e.length; i++) e2[i+(sep==null ? 1 : 2)] = e[i];
- addAlternative(new Sequence.Singleton(e2));
- addAlternative(new Sequence.Singleton(sep==null ? new Element[] { left, this, right} : new Element[] { left, sep, this, sep, right }));
- }
-}
- */
-
}
projects / sbp.git / blobdiff