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Parser of RSQL / FIQL (query language for RESTful APIs) written in JavaCC.
The newest version!
/* Parser.java */
/* Generated By:JavaCC: Do not edit this line. Parser.java */
package cz.jirutka.rsql.parser;
import cz.jirutka.rsql.parser.ast.*;
import java.io.InputStream;
import java.io.Reader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
final class Parser implements ParserConstants {
private NodesFactory factory;
private int nestingLevel = 0;
public Parser(Reader reader, NodesFactory factory) {
this(reader);
this.factory = factory;
}
static String unescape(String s) {
int start = 1;
StringBuilder sb = null;
for (int end; ; ) {
end = s.indexOf('\\', start != 1 ? start + 1 : start);
if (end < 0) {
return sb == null
? s.substring(start, s.length() - 1)
: sb.append(s, start, s.length() - 1).toString();
}
if (sb == null) {
sb = new StringBuilder(s.length() - 3);
}
sb.append(s, start, end);
start = end + 1;
}
}
final public Node Input() throws ParseException {final Node node;
node = Or();
jj_consume_token(0);
{if ("" != null) return node;}
throw new Error("Missing return statement in function");
}
final public Node Or() throws ParseException {final List nodes = new ArrayList(3);
Node node;
node = And();
nodes.add(node);
label_1:
while (true) {
if (jj_2_1(3)) {
;
} else {
break label_1;
}
jj_consume_token(OR);
node = And();
nodes.add(node);
}
{if ("" != null) return nodes.size() != 1 ? factory.createLogicalNode(LogicalOperator.OR, nodes) : nodes.get(0);}
throw new Error("Missing return statement in function");
}
final public Node And() throws ParseException {final List nodes = new ArrayList(3);
Node node;
node = Constraint();
nodes.add(node);
label_2:
while (true) {
if (jj_2_2(3)) {
;
} else {
break label_2;
}
jj_consume_token(AND);
node = Constraint();
nodes.add(node);
}
{if ("" != null) return nodes.size() != 1 ? factory.createLogicalNode(LogicalOperator.AND, nodes) : nodes.get(0);}
throw new Error("Missing return statement in function");
}
final public Node Constraint() throws ParseException {final Node node;
if (jj_2_3(3)) {
node = Group();
} else if (jj_2_4(3)) {
node = Comparison();
} else {
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) return node;}
throw new Error("Missing return statement in function");
}
final public Node Group() throws ParseException {final Node node;
jj_consume_token(LPAREN);
node = Or();
jj_consume_token(RPAREN);
{if ("" != null) return node;}
throw new Error("Missing return statement in function");
}
final public ComparisonNode Comparison() throws ParseException {final String sel;
final String op;
final Object args;
sel = Selector();
op = Operator();
args = Arguments();
{if ("" != null) return factory.createComparisonNode(op, sel, args);}
throw new Error("Missing return statement in function");
}
final public String Selector() throws ParseException {
if (jj_2_7(3)) {
token = jj_consume_token(UNRESERVED_STR);
{if ("" != null) return token.image;}
} else if (jj_2_8(3)) {
if (jj_2_5(3)) {
token = jj_consume_token(DOUBLE_QUOTED_STR);
} else if (jj_2_6(3)) {
token = jj_consume_token(SINGLE_QUOTED_STR);
} else {
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) return unescape(token.image);}
} else {
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final public String Operator() throws ParseException {
if (jj_2_9(3)) {
token = jj_consume_token(COMP_FIQL);
} else if (jj_2_10(3)) {
token = jj_consume_token(COMP_ALT);
} else {
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) return token.image;}
throw new Error("Missing return statement in function");
}
final public Object Arguments() throws ParseException {final Object value;
if (jj_2_12(3)) {
jj_consume_token(LPAREN);
nestingLevel++;
value = Or();
((Node)value).setNestingLevel(nestingLevel);
jj_consume_token(RPAREN);
nestingLevel--;
((Node)value).setNestingLevel(nestingLevel);
{if ("" != null) return value;}
} else if (jj_2_13(3)) {
jj_consume_token(LPAREN);
value = OptionalCommaSepArguments();
jj_consume_token(RPAREN);
{if ("" != null) return value;}
} else {
if (jj_2_11(3)) {
value = Argument();
{if ("" != null) return value;}
} else {
;
}
{if ("" != null) return Collections.emptyList();}
}
throw new Error("Missing return statement in function");
}
final public List OptionalCommaSepArguments() throws ParseException {List list = null;
if (jj_2_14(3)) {
list = CommaSepArguments();
} else {
;
}
{if ("" != null) return list == null ? Collections.emptyList() : list;}
throw new Error("Missing return statement in function");
}
final public List CommaSepArguments() throws ParseException {final List list = new ArrayList(3);
String arg;
arg = Argument();
list.add(arg);
label_3:
while (true) {
if (jj_2_15(3)) {
;
} else {
break label_3;
}
jj_consume_token(OR);
arg = Argument();
list.add(arg);
}
{if ("" != null) return list;}
throw new Error("Missing return statement in function");
}
final public String Argument() throws ParseException {
if (jj_2_18(3)) {
token = jj_consume_token(UNRESERVED_STR);
{if ("" != null) return token.image;}
} else if (jj_2_19(3)) {
if (jj_2_16(3)) {
token = jj_consume_token(DOUBLE_QUOTED_STR);
} else if (jj_2_17(3)) {
token = jj_consume_token(SINGLE_QUOTED_STR);
} else {
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) return unescape(token.image);}
} else {
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
private boolean jj_2_1(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_1()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(0, xla); }
}
private boolean jj_2_2(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_2()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(1, xla); }
}
private boolean jj_2_3(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_3()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(2, xla); }
}
private boolean jj_2_4(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_4()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(3, xla); }
}
private boolean jj_2_5(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_5()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(4, xla); }
}
private boolean jj_2_6(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_6()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(5, xla); }
}
private boolean jj_2_7(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_7()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(6, xla); }
}
private boolean jj_2_8(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_8()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(7, xla); }
}
private boolean jj_2_9(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_9()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(8, xla); }
}
private boolean jj_2_10(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_10()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(9, xla); }
}
private boolean jj_2_11(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_11()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(10, xla); }
}
private boolean jj_2_12(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_12()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(11, xla); }
}
private boolean jj_2_13(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_13()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(12, xla); }
}
private boolean jj_2_14(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_14()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(13, xla); }
}
private boolean jj_2_15(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_15()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(14, xla); }
}
private boolean jj_2_16(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_16()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(15, xla); }
}
private boolean jj_2_17(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_17()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(16, xla); }
}
private boolean jj_2_18(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_18()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(17, xla); }
}
private boolean jj_2_19(int xla)
{
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return (!jj_3_19()); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(18, xla); }
}
private boolean jj_3R_Comparison_182_5_7()
{
if (jj_3R_Selector_190_5_12()) return true;
if (jj_3R_Operator_200_5_13()) return true;
if (jj_3R_Arguments_211_5_14()) return true;
return false;
}
private boolean jj_3_1()
{
if (jj_scan_token(OR)) return true;
if (jj_3R_And_144_5_4()) return true;
return false;
}
private boolean jj_3_13()
{
if (jj_scan_token(LPAREN)) return true;
if (jj_3R_OptionalCommaSepArguments_241_5_10()) return true;
if (jj_scan_token(RPAREN)) return true;
return false;
}
private boolean jj_3_4()
{
if (jj_3R_Comparison_182_5_7()) return true;
return false;
}
private boolean jj_3_6()
{
if (jj_scan_token(SINGLE_QUOTED_STR)) return true;
return false;
}
private boolean jj_3_10()
{
if (jj_scan_token(COMP_ALT)) return true;
return false;
}
private boolean jj_3R_Or_129_5_9()
{
if (jj_3R_And_144_5_4()) return true;
return false;
}
private boolean jj_3_16()
{
if (jj_scan_token(DOUBLE_QUOTED_STR)) return true;
return false;
}
private boolean jj_3_19()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_16()) {
jj_scanpos = xsp;
if (jj_3_17()) return true;
}
return false;
}
private boolean jj_3R_Argument_265_5_8()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_18()) {
jj_scanpos = xsp;
if (jj_3_19()) return true;
}
return false;
}
private boolean jj_3_18()
{
if (jj_scan_token(UNRESERVED_STR)) return true;
return false;
}
private boolean jj_3R_Group_169_5_6()
{
if (jj_scan_token(LPAREN)) return true;
if (jj_3R_Or_129_5_9()) return true;
return false;
}
private boolean jj_3_15()
{
if (jj_scan_token(OR)) return true;
if (jj_3R_Argument_265_5_8()) return true;
return false;
}
private boolean jj_3R_Arguments_211_5_14()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_12()) {
jj_scanpos = xsp;
if (jj_3_13()) {
jj_scanpos = xsp;
if (jj_3R_Arguments_230_5_15()) return true;
}
}
return false;
}
private boolean jj_3_12()
{
if (jj_scan_token(LPAREN)) return true;
if (jj_3R_Or_129_5_9()) return true;
return false;
}
private boolean jj_3_3()
{
if (jj_3R_Group_169_5_6()) return true;
return false;
}
private boolean jj_3R_CommaSepArguments_253_5_11()
{
if (jj_3R_Argument_265_5_8()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3_15()) { jj_scanpos = xsp; break; }
}
return false;
}
private boolean jj_3R_Constraint_158_5_5()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_3()) {
jj_scanpos = xsp;
if (jj_3_4()) return true;
}
return false;
}
private boolean jj_3_17()
{
if (jj_scan_token(SINGLE_QUOTED_STR)) return true;
return false;
}
private boolean jj_3_9()
{
if (jj_scan_token(COMP_FIQL)) return true;
return false;
}
private boolean jj_3R_Operator_200_5_13()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_9()) {
jj_scanpos = xsp;
if (jj_3_10()) return true;
}
return false;
}
private boolean jj_3_2()
{
if (jj_scan_token(AND)) return true;
if (jj_3R_Constraint_158_5_5()) return true;
return false;
}
private boolean jj_3_14()
{
if (jj_3R_CommaSepArguments_253_5_11()) return true;
return false;
}
private boolean jj_3R_OptionalCommaSepArguments_241_5_10()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_14()) jj_scanpos = xsp;
return false;
}
private boolean jj_3_5()
{
if (jj_scan_token(DOUBLE_QUOTED_STR)) return true;
return false;
}
private boolean jj_3_8()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_5()) {
jj_scanpos = xsp;
if (jj_3_6()) return true;
}
return false;
}
private boolean jj_3R_And_144_5_4()
{
if (jj_3R_Constraint_158_5_5()) return true;
return false;
}
private boolean jj_3R_Selector_190_5_12()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_7()) {
jj_scanpos = xsp;
if (jj_3_8()) return true;
}
return false;
}
private boolean jj_3_7()
{
if (jj_scan_token(UNRESERVED_STR)) return true;
return false;
}
private boolean jj_3_11()
{
if (jj_3R_Argument_265_5_8()) return true;
return false;
}
private boolean jj_3R_Arguments_230_5_15()
{
Token xsp;
xsp = jj_scanpos;
if (jj_3_11()) jj_scanpos = xsp;
return false;
}
/** Generated Token Manager. */
public ParserTokenManager token_source;
SimpleCharStream jj_input_stream;
/** Current token. */
public Token token;
/** Next token. */
public Token jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
private int jj_gen;
final private int[] jj_la1 = new int[0];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {};
}
final private JJCalls[] jj_2_rtns = new JJCalls[19];
private boolean jj_rescan = false;
private int jj_gc = 0;
/** Constructor with InputStream. */
public Parser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public Parser(java.io.InputStream stream, String encoding) {
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new ParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
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 < 0; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Constructor. */
public Parser(java.io.Reader stream) {
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new ParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
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 ParserTokenManager(jj_input_stream);
}
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Constructor with generated Token Manager. */
public Parser(ParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
/** Reinitialise. */
public void ReInit(ParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
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++;
if (++jj_gc > 100) {
jj_gc = 0;
for (int i = 0; i < jj_2_rtns.length; i++) {
JJCalls c = jj_2_rtns[i];
while (c != null) {
if (c.gen < jj_gen) c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
@SuppressWarnings("serial")
static private final class LookaheadSuccess extends java.lang.Error {
@Override
public Throwable fillInStackTrace() {
return this;
}
}
static private final LookaheadSuccess jj_ls = new LookaheadSuccess();
private boolean jj_scan_token(int kind) {
if (jj_scanpos == jj_lastpos) {
jj_la--;
if (jj_scanpos.next == null) {
jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
} else {
jj_lastpos = jj_scanpos = jj_scanpos.next;
}
} else {
jj_scanpos = jj_scanpos.next;
}
if (jj_rescan) {
int i = 0; Token tok = token;
while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
if (tok != null) jj_add_error_token(kind, i);
}
if (jj_scanpos.kind != kind) return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
return false;
}
/** Get the next Token. */
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. */
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;
}
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);
}
private java.util.List jj_expentries = new java.util.ArrayList();
private int[] jj_expentry;
private int jj_kind = -1;
private int[] jj_lasttokens = new int[100];
private int jj_endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100) {
return;
}
if (pos == jj_endpos + 1) {
jj_lasttokens[jj_endpos++] = kind;
} else if (jj_endpos != 0) {
jj_expentry = new int[jj_endpos];
for (int i = 0; i < jj_endpos; i++) {
jj_expentry[i] = jj_lasttokens[i];
}
for (int[] oldentry : jj_expentries) {
if (oldentry.length == jj_expentry.length) {
boolean isMatched = true;
for (int i = 0; i < jj_expentry.length; i++) {
if (oldentry[i] != jj_expentry[i]) {
isMatched = false;
break;
}
}
if (isMatched) {
jj_expentries.add(jj_expentry);
break;
}
}
}
if (pos != 0) {
jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
}
/** Generate ParseException. */
public ParseException generateParseException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[14];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 0; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1< jj_gen) {
jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
switch (i) {
case 0: jj_3_1(); break;
case 1: jj_3_2(); break;
case 2: jj_3_3(); break;
case 3: jj_3_4(); break;
case 4: jj_3_5(); break;
case 5: jj_3_6(); break;
case 6: jj_3_7(); break;
case 7: jj_3_8(); break;
case 8: jj_3_9(); break;
case 9: jj_3_10(); break;
case 10: jj_3_11(); break;
case 11: jj_3_12(); break;
case 12: jj_3_13(); break;
case 13: jj_3_14(); break;
case 14: jj_3_15(); break;
case 15: jj_3_16(); break;
case 16: jj_3_17(); break;
case 17: jj_3_18(); break;
case 18: jj_3_19(); break;
}
}
p = p.next;
} while (p != null);
} catch(LookaheadSuccess ls) { }
}
jj_rescan = false;
}
private void jj_save(int index, int xla) {
JJCalls p = jj_2_rtns[index];
while (p.gen > jj_gen) {
if (p.next == null) { p = p.next = new JJCalls(); break; }
p = p.next;
}
p.gen = jj_gen + xla - jj_la;
p.first = token;
p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}
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