use of org.drools.drl.ast.descr.ConditionalElementDescr in project drools by kiegroup.
the class DRL6Parser method lhsOr.
/**
* lhsOr := LEFT_PAREN OR lhsAnd+ RIGHT_PAREN
* | lhsAnd (OR lhsAnd)*
*
* @param ce
* @param allowOr
* @throws org.antlr.runtime.RecognitionException
*/
private BaseDescr lhsOr(final CEDescrBuilder<?, ?> ce, boolean allowOr) throws RecognitionException {
BaseDescr result = null;
if (allowOr && input.LA(1) == DRL6Lexer.LEFT_PAREN && helper.validateLT(2, DroolsSoftKeywords.OR)) {
// prefixed OR
CEDescrBuilder<?, OrDescr> or = null;
if (state.backtracking == 0) {
or = ce.or();
result = or.getDescr();
helper.start(or, CEDescrBuilder.class, null);
}
try {
match(input, DRL6Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
match(input, DRL6Lexer.ID, DroolsSoftKeywords.OR, null, DroolsEditorType.KEYWORD);
if (state.failed)
return null;
while (input.LA(1) == DRL6Lexer.AT) {
// annotation*
annotation(or);
if (state.failed)
return null;
}
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
}
while (input.LA(1) != DRL6Lexer.RIGHT_PAREN) {
lhsAnd(or, allowOr);
if (state.failed)
return null;
}
match(input, DRL6Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
} finally {
if (state.backtracking == 0) {
helper.end(CEDescrBuilder.class, or);
}
}
} else {
// infix OR
// create an OR anyway, as if it is not an OR we remove it later
CEDescrBuilder<?, OrDescr> or = null;
if (state.backtracking == 0) {
or = ce.or();
result = or.getDescr();
helper.start(or, CEDescrBuilder.class, null);
}
try {
lhsAnd(or, allowOr);
if (state.failed)
return null;
if (allowOr && (helper.validateIdentifierKey(DroolsSoftKeywords.OR) || input.LA(1) == DRL6Lexer.DOUBLE_PIPE)) {
while (helper.validateIdentifierKey(DroolsSoftKeywords.OR) || input.LA(1) == DRL6Lexer.DOUBLE_PIPE) {
if (input.LA(1) == DRL6Lexer.DOUBLE_PIPE) {
match(input, DRL6Lexer.DOUBLE_PIPE, null, null, DroolsEditorType.SYMBOL);
} else {
match(input, DRL6Lexer.ID, DroolsSoftKeywords.OR, null, DroolsEditorType.KEYWORD);
}
if (state.failed)
return null;
while (input.LA(1) == DRL6Lexer.AT) {
// annotation*
annotation(or);
if (state.failed)
return null;
}
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
}
lhsAnd(or, allowOr);
if (state.failed)
return null;
}
} else if (allowOr) {
if (state.backtracking == 0) {
// if no OR present, then remove it and add children to parent
((ConditionalElementDescr) ce.getDescr()).getDescrs().remove(or.getDescr());
for (BaseDescr base : or.getDescr().getDescrs()) {
((ConditionalElementDescr) ce.getDescr()).addDescr(base);
}
result = ce.getDescr();
}
}
} finally {
if (state.backtracking == 0) {
helper.end(CEDescrBuilder.class, or);
}
}
}
return result;
}
use of org.drools.drl.ast.descr.ConditionalElementDescr in project drools by kiegroup.
the class DRL6Parser method lhsExpression.
/**
* lhsExpression := lhsOr*
*
* @param lhs
* @throws org.antlr.runtime.RecognitionException
*/
private void lhsExpression(CEDescrBuilder<?, AndDescr> lhs) throws RecognitionException {
helper.start(lhs, CEDescrBuilder.class, null);
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
try {
while (input.LA(1) != DRL6Lexer.EOF && !helper.validateIdentifierKey(DroolsSoftKeywords.THEN) && !helper.validateIdentifierKey(DroolsSoftKeywords.END)) {
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
lhsOr(lhs, true);
if (lhs.getDescr() != null && lhs.getDescr() instanceof ConditionalElementDescr) {
ConditionalElementDescr root = (ConditionalElementDescr) lhs.getDescr();
BaseDescr[] descrs = root.getDescrs().toArray(new BaseDescr[root.getDescrs().size()]);
root.getDescrs().clear();
for (int i = 0; i < descrs.length; i++) {
root.addOrMerge(descrs[i]);
}
}
if (state.failed)
return;
}
} finally {
helper.end(CEDescrBuilder.class, lhs);
}
}
use of org.drools.drl.ast.descr.ConditionalElementDescr in project drools by kiegroup.
the class DRL5Parser method fromAccumulate.
/**
* fromAccumulate := ACCUMULATE LEFT_PAREN lhsAnd COMMA
* ( INIT chunk_(_) COMMA ACTION chunk_(_) COMMA
* ( REVERSE chunk_(_) COMMA)? RESULT chunk_(_)
* | accumulateFunction
* ) RIGHT_PAREN
*
* @param pattern
* @throws RecognitionException
*/
private void fromAccumulate(PatternDescrBuilder<?> pattern) throws RecognitionException {
AccumulateDescrBuilder<?> accumulate = helper.start(pattern, AccumulateDescrBuilder.class, null);
try {
match(input, DRL5Lexer.ID, DroolsSoftKeywords.ACCUMULATE, null, DroolsEditorType.KEYWORD);
if (state.failed)
return;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE);
}
match(input, DRL5Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
CEDescrBuilder<?, AndDescr> source = accumulate.source();
try {
helper.start(source, CEDescrBuilder.class, null);
lhsAnd(source, false);
if (state.failed)
return;
if (source.getDescr() != null && source.getDescr() instanceof ConditionalElementDescr) {
ConditionalElementDescr root = (ConditionalElementDescr) source.getDescr();
BaseDescr[] descrs = root.getDescrs().toArray(new BaseDescr[root.getDescrs().size()]);
root.getDescrs().clear();
for (int i = 0; i < descrs.length; i++) {
root.addOrMerge(descrs[i]);
}
}
} finally {
helper.end(CEDescrBuilder.class, source);
}
if (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
}
if (helper.validateIdentifierKey(DroolsSoftKeywords.INIT)) {
// custom code, inline accumulate
// initBlock
match(input, DRL5Lexer.ID, DroolsSoftKeywords.INIT, null, DroolsEditorType.KEYWORD);
if (state.failed)
return;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE_INIT);
}
String init = chunk(DRL5Lexer.LEFT_PAREN, DRL5Lexer.RIGHT_PAREN, Location.LOCATION_LHS_FROM_ACCUMULATE_INIT_INSIDE);
if (state.failed)
return;
if (state.backtracking == 0)
accumulate.init(init);
if (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
}
// actionBlock
match(input, DRL5Lexer.ID, DroolsSoftKeywords.ACTION, null, DroolsEditorType.KEYWORD);
if (state.failed)
return;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE_ACTION);
}
String action = chunk(DRL5Lexer.LEFT_PAREN, DRL5Lexer.RIGHT_PAREN, Location.LOCATION_LHS_FROM_ACCUMULATE_ACTION_INSIDE);
if (state.failed)
return;
if (state.backtracking == 0)
accumulate.action(action);
if (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
}
// reverseBlock
if (helper.validateIdentifierKey(DroolsSoftKeywords.REVERSE)) {
match(input, DRL5Lexer.ID, DroolsSoftKeywords.REVERSE, null, DroolsEditorType.KEYWORD);
if (state.failed)
return;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE_REVERSE);
}
String reverse = chunk(DRL5Lexer.LEFT_PAREN, DRL5Lexer.RIGHT_PAREN, Location.LOCATION_LHS_FROM_ACCUMULATE_REVERSE_INSIDE);
if (state.failed)
return;
if (state.backtracking == 0)
accumulate.reverse(reverse);
if (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
}
}
// resultBlock
match(input, DRL5Lexer.ID, DroolsSoftKeywords.RESULT, null, DroolsEditorType.KEYWORD);
if (state.failed)
return;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE_RESULT);
}
String result = chunk(DRL5Lexer.LEFT_PAREN, DRL5Lexer.RIGHT_PAREN, Location.LOCATION_LHS_FROM_ACCUMULATE_RESULT_INSIDE);
if (state.failed)
return;
if (state.backtracking == 0)
accumulate.result(result);
} else {
// accumulate functions
accumulateFunction(accumulate, false, null);
if (state.failed)
return;
}
match(input, DRL5Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return;
} finally {
helper.end(AccumulateDescrBuilder.class, accumulate);
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
}
}
use of org.drools.drl.ast.descr.ConditionalElementDescr in project drools by kiegroup.
the class DRL5Parser method lhsAccumulate.
/**
* lhsAccumulate := ACCUMULATE LEFT_PAREN lhsAnd (COMMA|SEMICOLON)
* accumulateFunctionBinding (COMMA accumulateFunctionBinding)*
* (SEMICOLON constraints)?
* RIGHT_PAREN SEMICOLON?
*
* @param ce
* @return
* @throws RecognitionException
*/
private BaseDescr lhsAccumulate(PatternContainerDescrBuilder<?, ?> ce) throws RecognitionException {
PatternDescrBuilder<?> pattern = null;
BaseDescr result = null;
pattern = helper.start((DescrBuilder<?, ?>) ce, PatternDescrBuilder.class, null);
if (pattern != null) {
result = pattern.getDescr();
}
try {
if (state.backtracking == 0) {
pattern.type("Object[]");
pattern.isQuery(false);
// might have to add the implicit bindings as well
}
AccumulateDescrBuilder<?> accumulate = helper.start(pattern, AccumulateDescrBuilder.class, null);
try {
match(input, DRL5Lexer.ID, DroolsSoftKeywords.ACCUMULATE, null, DroolsEditorType.KEYWORD);
if (state.failed)
return null;
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE);
}
match(input, DRL5Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
CEDescrBuilder<?, AndDescr> source = accumulate.source();
try {
helper.start(source, CEDescrBuilder.class, null);
lhsAnd(source, false);
if (state.failed)
return null;
if (source.getDescr() != null && source.getDescr() instanceof ConditionalElementDescr) {
ConditionalElementDescr root = (ConditionalElementDescr) source.getDescr();
BaseDescr[] descrs = root.getDescrs().toArray(new BaseDescr[root.getDescrs().size()]);
root.getDescrs().clear();
for (int i = 0; i < descrs.length; i++) {
root.addOrMerge(descrs[i]);
}
}
} finally {
helper.end(CEDescrBuilder.class, source);
}
if (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
} else if (input.LA(-1) != DRL5Lexer.SEMICOLON) {
// lhsUnary will consume an optional SEMICOLON, so we need to check if it was consumed already
// or if we must fail consuming it now
match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
}
// accumulate functions
accumulateFunctionBinding(accumulate);
if (state.failed)
return null;
while (input.LA(1) == DRL5Lexer.COMMA) {
match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
accumulateFunctionBinding(accumulate);
if (state.failed)
return null;
}
if (input.LA(1) == DRL5Lexer.SEMICOLON) {
match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
constraints(pattern);
}
match(input, DRL5Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
} finally {
helper.end(AccumulateDescrBuilder.class, accumulate);
if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
}
} finally {
helper.end(PatternDescrBuilder.class, pattern);
}
if (input.LA(1) == DRL5Lexer.SEMICOLON) {
match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
if (state.failed)
return null;
}
return result;
}
use of org.drools.drl.ast.descr.ConditionalElementDescr in project drools by kiegroup.
the class DRL5Parser method lhsExpression.
/**
* lhsExpression := lhsOr*
*
* @param lhs
* @throws RecognitionException
*/
private void lhsExpression(CEDescrBuilder<?, AndDescr> lhs) throws RecognitionException {
helper.start(lhs, CEDescrBuilder.class, null);
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
try {
while (input.LA(1) != DRL5Lexer.EOF && !helper.validateIdentifierKey(DroolsSoftKeywords.THEN) && !helper.validateIdentifierKey(DroolsSoftKeywords.END)) {
if (state.backtracking == 0) {
helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
}
lhsOr(lhs, true);
if (lhs.getDescr() != null && lhs.getDescr() instanceof ConditionalElementDescr) {
ConditionalElementDescr root = (ConditionalElementDescr) lhs.getDescr();
BaseDescr[] descrs = root.getDescrs().toArray(new BaseDescr[root.getDescrs().size()]);
root.getDescrs().clear();
for (int i = 0; i < descrs.length; i++) {
root.addOrMerge(descrs[i]);
}
}
if (state.failed)
return;
}
} finally {
helper.end(CEDescrBuilder.class, lhs);
}
}
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