javacc-7.0.1.test.tmp.java.JJTreeExamples.eg1.Eg1 Maven / Gradle / Ivy
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JavaCC is a parser/scanner generator for Java.
/* Eg1.java */
/* Generated By:JJTree&JavaCC: Do not edit this line. Eg1.java */
/** An Arithmetic Grammar. */
public class Eg1/*@bgen(jjtree)*/implements Eg1TreeConstants, Eg1Constants {/*@bgen(jjtree)*/
protected static JJTEg1State jjtree = new JJTEg1State();
/** Main entry point. */
public static void main(String args[]) {
System.out.println("Reading from standard input...");
Eg1 t = new Eg1(System.in);
try {
SimpleNode n = t.Start();
n.dump("");
System.out.println("Thank you.");
} catch (Exception e) {
System.out.println("Oops.");
System.out.println(e.getMessage());
e.printStackTrace();
}
}
/** Main production. */
static final public SimpleNode Start() throws ParseException {/*@bgen(jjtree) Start */
SimpleNode jjtn000 = new SimpleNode(JJTSTART);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
Expression();
jj_consume_token(14);
jjtree.closeNodeScope(jjtn000, true);
jjtc000 = false;
{if ("" != null) return jjtn000;}
} catch (Throwable jjte000) {
if (jjtc000) {
jjtree.clearNodeScope(jjtn000);
jjtc000 = false;
} else {
jjtree.popNode();
}
if (jjte000 instanceof RuntimeException) {
{if (true) throw (RuntimeException)jjte000;}
}
if (jjte000 instanceof ParseException) {
{if (true) throw (ParseException)jjte000;}
}
{if (true) throw (Error)jjte000;}
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
throw new Error("Missing return statement in function");
}
/** An Expression. */
static final public void Expression() throws ParseException {/*@bgen(jjtree) Expression */
SimpleNode jjtn000 = new SimpleNode(JJTEXPRESSION);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
AdditiveExpression();
} catch (Throwable jjte000) {
if (jjtc000) {
jjtree.clearNodeScope(jjtn000);
jjtc000 = false;
} else {
jjtree.popNode();
}
if (jjte000 instanceof RuntimeException) {
{if (true) throw (RuntimeException)jjte000;}
}
if (jjte000 instanceof ParseException) {
{if (true) throw (ParseException)jjte000;}
}
{if (true) throw (Error)jjte000;}
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
/** An Additive Expression. */
static final public void AdditiveExpression() throws ParseException {/*@bgen(jjtree) AdditiveExpression */
SimpleNode jjtn000 = new SimpleNode(JJTADDITIVEEXPRESSION);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
MultiplicativeExpression();
label_1:
while (true) {
switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
case 15:
case 16:{
;
break;
}
default:
jj_la1[0] = jj_gen;
break label_1;
}
switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
case 15:{
jj_consume_token(15);
break;
}
case 16:{
jj_consume_token(16);
break;
}
default:
jj_la1[1] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
MultiplicativeExpression();
}
} catch (Throwable jjte000) {
if (jjtc000) {
jjtree.clearNodeScope(jjtn000);
jjtc000 = false;
} else {
jjtree.popNode();
}
if (jjte000 instanceof RuntimeException) {
{if (true) throw (RuntimeException)jjte000;}
}
if (jjte000 instanceof ParseException) {
{if (true) throw (ParseException)jjte000;}
}
{if (true) throw (Error)jjte000;}
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
/** A Multiplicative Expression. */
static final public void MultiplicativeExpression() throws ParseException {/*@bgen(jjtree) MultiplicativeExpression */
SimpleNode jjtn000 = new SimpleNode(JJTMULTIPLICATIVEEXPRESSION);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
UnaryExpression();
label_2:
while (true) {
switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
case 17:
case 18:
case 19:{
;
break;
}
default:
jj_la1[2] = jj_gen;
break label_2;
}
switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
case 17:{
jj_consume_token(17);
break;
}
case 18:{
jj_consume_token(18);
break;
}
case 19:{
jj_consume_token(19);
break;
}
default:
jj_la1[3] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
UnaryExpression();
}
} catch (Throwable jjte000) {
if (jjtc000) {
jjtree.clearNodeScope(jjtn000);
jjtc000 = false;
} else {
jjtree.popNode();
}
if (jjte000 instanceof RuntimeException) {
{if (true) throw (RuntimeException)jjte000;}
}
if (jjte000 instanceof ParseException) {
{if (true) throw (ParseException)jjte000;}
}
{if (true) throw (Error)jjte000;}
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
/** A Unary Expression. */
static final public void UnaryExpression() throws ParseException {/*@bgen(jjtree) UnaryExpression */
SimpleNode jjtn000 = new SimpleNode(JJTUNARYEXPRESSION);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
case 20:{
jj_consume_token(20);
Expression();
jj_consume_token(21);
break;
}
case IDENTIFIER:{
Identifier();
break;
}
case INTEGER_LITERAL:{
Integer();
break;
}
default:
jj_la1[4] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
} catch (Throwable jjte000) {
if (jjtc000) {
jjtree.clearNodeScope(jjtn000);
jjtc000 = false;
} else {
jjtree.popNode();
}
if (jjte000 instanceof RuntimeException) {
{if (true) throw (RuntimeException)jjte000;}
}
if (jjte000 instanceof ParseException) {
{if (true) throw (ParseException)jjte000;}
}
{if (true) throw (Error)jjte000;}
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
/** An Identifier. */
static final public void Identifier() throws ParseException {/*@bgen(jjtree) Identifier */
SimpleNode jjtn000 = new SimpleNode(JJTIDENTIFIER);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
jj_consume_token(IDENTIFIER);
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
/** An Integer. */
static final public void Integer() throws ParseException {/*@bgen(jjtree) Integer */
SimpleNode jjtn000 = new SimpleNode(JJTINTEGER);
boolean jjtc000 = true;
jjtree.openNodeScope(jjtn000);
try {
jj_consume_token(INTEGER_LITERAL);
} finally {
if (jjtc000) {
jjtree.closeNodeScope(jjtn000, true);
}
}
}
static private boolean jj_initialized_once = false;
/** Generated Token Manager. */
static public Eg1TokenManager 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[5];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {0x18000,0x18000,0xe0000,0xe0000,0x100880,};
}
/** Constructor with InputStream. */
public Eg1(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public Eg1(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 Eg1TokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; 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;
jjtree.reset();
jj_gen = 0;
for (int i = 0; i < 5; i++) jj_la1[i] = -1;
}
/** Constructor. */
public Eg1(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 Eg1TokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
static public void ReInit(java.io.Reader stream) {
if (jj_input_stream == null) {
jj_input_stream = new SimpleCharStream(stream, 1, 1);
} else {
jj_input_stream.ReInit(stream, 1, 1);
}
if (token_source == null) {
token_source = new Eg1TokenManager(jj_input_stream);
}
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jjtree.reset();
jj_gen = 0;
for (int i = 0; i < 5; i++) jj_la1[i] = -1;
}
/** Constructor with generated Token Manager. */
public Eg1(Eg1TokenManager 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 < 5; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
public void ReInit(Eg1TokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jjtree.reset();
jj_gen = 0;
for (int i = 0; i < 5; 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_f() {
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[22];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 5; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1<