io.atlasmap.expression.parser.Parser Maven / Gradle / Ivy
/* Generated By:JavaCC: Do not edit this line. Parser.java */
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.atlasmap.expression.parser;
import java.io.*;
import java.util.*;
import io.atlasmap.expression.*;
import io.atlasmap.expression.internal.*;
import static io.atlasmap.expression.internal.BooleanExpression.asBooleanExpression;
/**
* Parser for AtlasMap expressions.
*
* Do not edit this .java file directly - it is autogenerated from Parser.jj
*/
public class Parser implements ParserConstants {
public FunctionResolver functionResolver;
// ----------------------------------------------------------------------------
// Grammar
// ----------------------------------------------------------------------------
final public Expression parse() throws ParseException {
Expression left=null;
// Look for expressions in reverse precedence order.
left = orExpression();
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression orExpression() throws ParseException {
Expression left;
Expression right;
// And expressions have higher precedence than or expressions and so on..
left = andExpression();
label_1:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case OR:
;
break;
default:
break label_1;
}
jj_consume_token(OR);
right = andExpression();
left = LogicExpression.createOR(asBooleanExpression(left), asBooleanExpression(right));
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression andExpression() throws ParseException {
Expression left;
Expression right;
left = equalityExpression();
label_2:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case AND:
;
break;
default:
break label_2;
}
jj_consume_token(AND);
right = equalityExpression();
left = LogicExpression.createAND(asBooleanExpression(left), asBooleanExpression(right));
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression equalityExpression() throws ParseException {
Expression left;
Expression right;
left = comparisonExpression();
label_3:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 22:
case 23:
;
break;
default:
break label_3;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 22:
jj_consume_token(22);
right = comparisonExpression();
left = ComparisonExpression.createEqual(left, right);
break;
case 23:
jj_consume_token(23);
right = comparisonExpression();
left = ComparisonExpression.createNotEqual(left, right);
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression comparisonExpression() throws ParseException {
Expression left;
Expression right;
Expression low;
Expression high;
String t, u;
boolean not;
ArrayList list;
left = addExpression();
label_4:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 22:
case 24:
case 25:
case 26:
case 27:
;
break;
default:
break label_4;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 24:
jj_consume_token(24);
right = addExpression();
left = ComparisonExpression.createGreaterThan(left, right);
break;
case 25:
jj_consume_token(25);
right = addExpression();
left = ComparisonExpression.createGreaterThanEqual(left, right);
break;
case 26:
jj_consume_token(26);
right = addExpression();
left = ComparisonExpression.createLessThan(left, right);
break;
case 27:
jj_consume_token(27);
right = addExpression();
left = ComparisonExpression.createLessThanEqual(left, right);
break;
case 22:
jj_consume_token(22);
right = addExpression();
left = ComparisonExpression.createEqual(left, right);
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression addExpression() throws ParseException {
Expression left;
Expression right;
left = multExpr();
label_5:
while (true) {
if (jj_2_1(2147483647)) {
;
} else {
break label_5;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 28:
jj_consume_token(28);
right = multExpr();
left = ArithmeticExpression.createPlus(left, right);
break;
case 29:
jj_consume_token(29);
right = multExpr();
left = ArithmeticExpression.createMinus(left, right);
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression multExpr() throws ParseException {
Expression left;
Expression right;
left = unaryExpr();
label_6:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 30:
case 31:
case 32:
;
break;
default:
break label_6;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 30:
jj_consume_token(30);
right = unaryExpr();
left = ArithmeticExpression.createMultiply(left, right);
break;
case 31:
jj_consume_token(31);
right = unaryExpr();
left = ArithmeticExpression.createDivide(left, right);
break;
case 32:
jj_consume_token(32);
right = unaryExpr();
left = ArithmeticExpression.createMod(left, right);
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression unaryExpr() throws ParseException {
String s=null;
Expression left=null;
if (jj_2_2(2147483647)) {
jj_consume_token(28);
left = unaryExpr();
} else {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 29:
jj_consume_token(29);
left = unaryExpr();
left = UnaryExpression.createNegate(left);
break;
case 33:
jj_consume_token(33);
left = unaryExpr();
left = UnaryExpression.createNOT( asBooleanExpression(left) );
break;
case TRUE:
case FALSE:
case NULL:
case DECIMAL_LITERAL:
case ZERO:
case HEX_LITERAL:
case OCTAL_LITERAL:
case FLOATING_POINT_LITERAL:
case STRING_LITERAL:
case ID:
case VARIABLE:
case 34:
left = primaryExpr();
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression primaryExpr() throws ParseException {
Expression left=null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case TRUE:
case FALSE:
case NULL:
case DECIMAL_LITERAL:
case ZERO:
case HEX_LITERAL:
case OCTAL_LITERAL:
case FLOATING_POINT_LITERAL:
case STRING_LITERAL:
left = literal();
break;
case VARIABLE:
left = variable();
break;
case 34:
jj_consume_token(34);
left = orExpression();
jj_consume_token(35);
break;
case ID:
left = functionExpr();
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public Expression functionExpr() throws ParseException {
Token functionName;
Expression left=null;
Expression arg=null;
ArrayList args = new ArrayList();
functionName = jj_consume_token(ID);
jj_consume_token(34);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case TRUE:
case FALSE:
case NULL:
case DECIMAL_LITERAL:
case ZERO:
case HEX_LITERAL:
case OCTAL_LITERAL:
case FLOATING_POINT_LITERAL:
case STRING_LITERAL:
case ID:
case VARIABLE:
case 28:
case 29:
case 33:
case 34:
arg = orExpression();
args.add( arg );
label_7:
while (true) {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 36:
;
break;
default:
break label_7;
}
jj_consume_token(36);
arg = orExpression();
args.add( arg );
}
break;
default:
;
}
jj_consume_token(35);
{if (true) return functionResolver.resolve(functionName.image, args);};
throw new Error("Missing return statement in function");
}
final public ConstantExpression literal() throws ParseException {
Token t;
String s;
ConstantExpression left=null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case STRING_LITERAL:
s = stringLiteral();
left = new ConstantExpression(s);
break;
case DECIMAL_LITERAL:
t = jj_consume_token(DECIMAL_LITERAL);
left = ConstantExpression.createFromDecimal(t.image);
break;
case ZERO:
t = jj_consume_token(ZERO);
left = ConstantExpression.createFromDecimal(t.image);
break;
case HEX_LITERAL:
t = jj_consume_token(HEX_LITERAL);
left = ConstantExpression.createFromHex(t.image);
break;
case OCTAL_LITERAL:
t = jj_consume_token(OCTAL_LITERAL);
left = ConstantExpression.createFromOctal(t.image);
break;
case FLOATING_POINT_LITERAL:
t = jj_consume_token(FLOATING_POINT_LITERAL);
left = ConstantExpression.createFloat(t.image);
break;
case TRUE:
jj_consume_token(TRUE);
left = ConstantExpression.TRUE;
break;
case FALSE:
jj_consume_token(FALSE);
left = ConstantExpression.FALSE;
break;
case NULL:
jj_consume_token(NULL);
left = ConstantExpression.NULL;
break;
default:
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final public String stringLiteral() throws ParseException {
Token t;
StringBuffer rc = new StringBuffer();
boolean first=true;
t = jj_consume_token(STRING_LITERAL);
// Decode the sting value.
String image = t.image;
for( int i=1; i < image.length()-1; i++ ) {
char c = image.charAt(i);
if( c == '\'' )
i++;
rc.append(c);
}
{if (true) return rc.toString();}
throw new Error("Missing return statement in function");
}
final public VariableExpression variable() throws ParseException {
Token t;
VariableExpression left=null;
t = jj_consume_token(VARIABLE);
left = new VariableExpression(Strings.stripSuffix(Strings.stripPrefix(t.image, "${"), "}"));
{if (true) return left;}
throw new Error("Missing return statement in function");
}
final 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; }
}
final 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; }
}
final private boolean jj_3R_41() {
if (jj_scan_token(AND)) return true;
if (jj_3R_40()) return true;
return false;
}
final private boolean jj_3R_26() {
if (jj_scan_token(ID)) return true;
if (jj_scan_token(34)) return true;
Token xsp;
xsp = jj_scanpos;
if (jj_3R_38()) jj_scanpos = xsp;
if (jj_scan_token(35)) return true;
return false;
}
final private boolean jj_3R_49() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_55()) {
jj_scanpos = xsp;
if (jj_3R_56()) return true;
}
return false;
}
final private boolean jj_3R_35() {
if (jj_scan_token(NULL)) return true;
return false;
}
final private boolean jj_3R_36() {
if (jj_3R_40()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_41()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_34() {
if (jj_scan_token(FALSE)) return true;
return false;
}
final private boolean jj_3R_45() {
if (jj_3R_8()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_49()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_22() {
if (jj_3R_26()) return true;
return false;
}
final private boolean jj_3R_21() {
if (jj_scan_token(34)) return true;
if (jj_3R_25()) return true;
if (jj_scan_token(35)) return true;
return false;
}
final private boolean jj_3R_20() {
if (jj_3R_24()) return true;
return false;
}
final private boolean jj_3R_54() {
if (jj_scan_token(22)) return true;
if (jj_3R_45()) return true;
return false;
}
final private boolean jj_3R_33() {
if (jj_scan_token(TRUE)) return true;
return false;
}
final private boolean jj_3R_19() {
if (jj_3R_23()) return true;
return false;
}
final private boolean jj_3R_37() {
if (jj_scan_token(OR)) return true;
if (jj_3R_36()) return true;
return false;
}
final private boolean jj_3R_53() {
if (jj_scan_token(27)) return true;
if (jj_3R_45()) return true;
return false;
}
final private boolean jj_3R_18() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_19()) {
jj_scanpos = xsp;
if (jj_3R_20()) {
jj_scanpos = xsp;
if (jj_3R_21()) {
jj_scanpos = xsp;
if (jj_3R_22()) return true;
}
}
}
return false;
}
final private boolean jj_3R_32() {
if (jj_scan_token(FLOATING_POINT_LITERAL)) return true;
return false;
}
final private boolean jj_3_2() {
if (jj_scan_token(28)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_52() {
if (jj_scan_token(26)) return true;
if (jj_3R_45()) return true;
return false;
}
final private boolean jj_3R_14() {
if (jj_3R_18()) return true;
return false;
}
final private boolean jj_3R_31() {
if (jj_scan_token(OCTAL_LITERAL)) return true;
return false;
}
final private boolean jj_3R_51() {
if (jj_scan_token(25)) return true;
if (jj_3R_45()) return true;
return false;
}
final private boolean jj_3R_25() {
if (jj_3R_36()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_37()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_13() {
if (jj_scan_token(33)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_50() {
if (jj_scan_token(24)) return true;
if (jj_3R_45()) return true;
return false;
}
final private boolean jj_3R_46() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_50()) {
jj_scanpos = xsp;
if (jj_3R_51()) {
jj_scanpos = xsp;
if (jj_3R_52()) {
jj_scanpos = xsp;
if (jj_3R_53()) {
jj_scanpos = xsp;
if (jj_3R_54()) return true;
}
}
}
}
return false;
}
final private boolean jj_3R_11() {
if (jj_scan_token(28)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_12() {
if (jj_scan_token(29)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_30() {
if (jj_scan_token(HEX_LITERAL)) return true;
return false;
}
final private boolean jj_3R_29() {
if (jj_scan_token(ZERO)) return true;
return false;
}
final private boolean jj_3R_9() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_11()) {
jj_scanpos = xsp;
if (jj_3R_12()) {
jj_scanpos = xsp;
if (jj_3R_13()) {
jj_scanpos = xsp;
if (jj_3R_14()) return true;
}
}
}
return false;
}
final private boolean jj_3R_28() {
if (jj_scan_token(DECIMAL_LITERAL)) return true;
return false;
}
final private boolean jj_3R_43() {
if (jj_3R_45()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_46()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_27() {
if (jj_3R_39()) return true;
return false;
}
final private boolean jj_3R_24() {
if (jj_scan_token(VARIABLE)) return true;
return false;
}
final private boolean jj_3R_17() {
if (jj_scan_token(32)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_23() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_27()) {
jj_scanpos = xsp;
if (jj_3R_28()) {
jj_scanpos = xsp;
if (jj_3R_29()) {
jj_scanpos = xsp;
if (jj_3R_30()) {
jj_scanpos = xsp;
if (jj_3R_31()) {
jj_scanpos = xsp;
if (jj_3R_32()) {
jj_scanpos = xsp;
if (jj_3R_33()) {
jj_scanpos = xsp;
if (jj_3R_34()) {
jj_scanpos = xsp;
if (jj_3R_35()) return true;
}
}
}
}
}
}
}
}
return false;
}
final private boolean jj_3R_48() {
if (jj_scan_token(23)) return true;
if (jj_3R_43()) return true;
return false;
}
final private boolean jj_3R_16() {
if (jj_scan_token(31)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_47() {
if (jj_scan_token(22)) return true;
if (jj_3R_43()) return true;
return false;
}
final private boolean jj_3R_44() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_47()) {
jj_scanpos = xsp;
if (jj_3R_48()) return true;
}
return false;
}
final private boolean jj_3R_42() {
if (jj_scan_token(36)) return true;
if (jj_3R_25()) return true;
return false;
}
final private boolean jj_3R_15() {
if (jj_scan_token(30)) return true;
if (jj_3R_9()) return true;
return false;
}
final private boolean jj_3R_10() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_15()) {
jj_scanpos = xsp;
if (jj_3R_16()) {
jj_scanpos = xsp;
if (jj_3R_17()) return true;
}
}
return false;
}
final private boolean jj_3R_8() {
if (jj_3R_9()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_10()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_38() {
if (jj_3R_25()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_42()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_39() {
if (jj_scan_token(STRING_LITERAL)) return true;
return false;
}
final private boolean jj_3R_40() {
if (jj_3R_43()) return true;
Token xsp;
while (true) {
xsp = jj_scanpos;
if (jj_3R_44()) { jj_scanpos = xsp; break; }
}
return false;
}
final private boolean jj_3R_56() {
if (jj_scan_token(29)) return true;
if (jj_3R_8()) return true;
return false;
}
final private boolean jj_3_1() {
Token xsp;
xsp = jj_scanpos;
if (jj_scan_token(28)) {
jj_scanpos = xsp;
if (jj_scan_token(29)) return true;
}
if (jj_3R_8()) return true;
return false;
}
final private boolean jj_3R_55() {
if (jj_scan_token(28)) return true;
if (jj_3R_8()) return true;
return false;
}
public ParserTokenManager token_source;
SimpleCharStream jj_input_stream;
public Token token, jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
public boolean lookingAhead = false;
private boolean jj_semLA;
public Parser(java.io.InputStream stream) {
this(stream, null);
}
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;
}
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
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;
}
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;
}
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;
}
public Parser(ParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
}
public void ReInit(ParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
}
final 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) {
return token;
}
token = oldToken;
throw generateParseException();
}
static private final class LookaheadSuccess extends java.lang.Error { }
final private LookaheadSuccess jj_ls = new LookaheadSuccess();
final 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_scanpos.kind != kind) return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
return false;
}
final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
return token;
}
final public Token getToken(int index) {
Token t = lookingAhead ? jj_scanpos : token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
final 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);
}
public ParseException generateParseException() {
Token errortok = token.next;
int line = errortok.beginLine, column = errortok.beginColumn;
String mess = (errortok.kind == 0) ? tokenImage[0] : errortok.image;
return new ParseException("Parse error at line " + line + ", column " + column + ". Encountered: " + mess);
}
final public void enable_tracing() {
}
final public void disable_tracing() {
}
}
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