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An Embedded Domain Specific Language Parser Generator PLugin compiler
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/* Generated By:JavaCC: Do not edit this line. RegExp.java */
package net.ericaro.diezel.core.parser;
import java.io.StringReader;
import net.ericaro.diezel.core.parser.DiezelSax;
import java.util.Deque;
import java.util.LinkedList;
public class RegExp implements RegExpConstants {
static Token t; //for local reuse do not use for long term calls over a non terminal
static boolean init= false;
// for debug
public static void print(Object o){System.out.println();}
public static void parse(String code, DiezelSax sax) throws ParseException{
if (!init)
{
new RegExp(new StringReader(code));
init = true;
}
else RegExp.ReInit(new StringReader(code));
RegExp.Flow(sax);
}
/** Top level grammar entry, a flow is a single expression.*/
static final public void Flow(DiezelSax sax) throws ParseException {
Object v;Token t;
v = Exp(sax);
sax.flow(v);
}
static final public Object Exp(DiezelSax sax) throws ParseException {
Object v1,v2;
v1 = Sel(sax);
label_1:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SEQ:
;
break;
default:
jj_la1[0] = jj_gen;
break label_1;
}
jj_consume_token(SEQ);
v2 = Sel(sax);
v1=sax.seq(v1,v2);
}
{if (true) return v1;}
throw new Error("Missing return statement in function");
}
static final public Object Sel(DiezelSax sax) throws ParseException {
Object v1,v2;
v1 = Bang(sax);
label_2:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SEL:
;
break;
default:
jj_la1[1] = jj_gen;
break label_2;
}
jj_consume_token(SEL);
v2 = Bang(sax);
v1= sax.sel(v1,v2);
}
{if (true) return v1;}
throw new Error("Missing return statement in function");
}
static final public Object Bang(DiezelSax sax) throws ParseException {
Object v;Deque bangs = new LinkedList();
v = Unary(sax);
bangs.push(v);
label_3:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case BANG:
;
break;
default:
jj_la1[2] = jj_gen;
break label_3;
}
jj_consume_token(BANG);
v = Unary(sax);
bangs.push(v);
}
{if (true) return sax.bang(bangs);}
throw new Error("Missing return statement in function");
}
static final public Object Unary(DiezelSax sax) throws ParseException {
Object v;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case LEFT:
jj_consume_token(LEFT);
v = Exp(sax);
jj_consume_token(RIGHT);
break;
case IDENTIFIER:
v = Transition(sax);
break;
default:
jj_la1[3] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case STAR:
case PLUS:
case OPT:
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case STAR:
jj_consume_token(STAR);
v= sax.star(v);
break;
case PLUS:
jj_consume_token(PLUS);
v=sax.plus(v);
break;
case OPT:
jj_consume_token(OPT);
v= sax.opt(v);
break;
default:
jj_la1[4] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
break;
default:
jj_la1[5] = jj_gen;
;
}
{if (true) return v;}
throw new Error("Missing return statement in function");
}
static final public Object Transition(DiezelSax sax) throws ParseException {
t = jj_consume_token(IDENTIFIER);
{if (true) return sax.terminal(t.image);}
throw new Error("Missing return statement in function");
}
static private boolean jj_initialized_once = false;
/** Generated Token Manager. */
static public RegExpTokenManager token_source;
static SimpleCharStream jj_input_stream;
/** Current token. */
static public Token token;
/** Next token. */
static public Token jj_nt;
static private int jj_ntk;
static private int jj_gen;
static final private int[] jj_la1 = new int[6];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {0x1000,0x800,0x400,0x22000,0x380,0x380,};
}
/** Constructor with InputStream. */
public RegExp(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public RegExp(java.io.InputStream stream, String encoding) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new RegExpTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
static public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
static public void ReInit(java.io.InputStream stream, String encoding) {
try { jj_input_stream.ReInit(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
/** Constructor. */
public RegExp(java.io.Reader stream) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new RegExpTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
static public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
/** Constructor with generated Token Manager. */
public RegExp(RegExpTokenManager tm) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
public void ReInit(RegExpTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 6; i++) jj_la1[i] = -1;
}
static private Token jj_consume_token(int kind) throws ParseException {
Token oldToken;
if ((oldToken = token).next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
/** Get the next Token. */
static final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
return token;
}
/** Get the specific Token. */
static final public Token getToken(int index) {
Token t = token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
static private int jj_ntk() {
if ((jj_nt=token.next) == null)
return (jj_ntk = (token.next=token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
static private java.util.List jj_expentries = new java.util.ArrayList();
static private int[] jj_expentry;
static private int jj_kind = -1;
/** Generate ParseException. */
static public ParseException generateParseException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[18];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 6; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1<