METRON-1277 Add match statement to Stellar language closes apache/incubator-metron#814
Project: http://git-wip-us.apache.org/repos/asf/metron/repo Commit: http://git-wip-us.apache.org/repos/asf/metron/commit/c749b517 Tree: http://git-wip-us.apache.org/repos/asf/metron/tree/c749b517 Diff: http://git-wip-us.apache.org/repos/asf/metron/diff/c749b517 Branch: refs/heads/master Commit: c749b51730f7fd24a900da31c3fe2072a54086bc Parents: f084404 Author: Otto Fowler <ofow...@industrialdefender.com> Authored: Thu Nov 30 15:16:18 2017 -0500 Committer: cstella <ceste...@gmail.com> Committed: Thu Nov 30 15:16:18 2017 -0500 ---------------------------------------------------------------------- Upgrading.md | 13 + metron-stellar/stellar-common/README.md | 29 +- .../metron/stellar/common/generated/Stellar.g4 | 27 + .../stellar-common/src/main/java/Stellar.tokens | 66 +- .../src/main/java/StellarLexer.tokens | 66 +- .../metron/stellar/common/StellarCompiler.java | 122 ++- .../common/generated/StellarBaseListener.java | 84 ++ .../stellar/common/generated/StellarLexer.java | 379 +++---- .../common/generated/StellarListener.java | 180 +++- .../stellar/common/generated/StellarParser.java | 1007 ++++++++++++------ .../metron/stellar/dsl/functions/MatchTest.java | 377 +++++++ 11 files changed, 1736 insertions(+), 614 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/Upgrading.md ---------------------------------------------------------------------- diff --git a/Upgrading.md b/Upgrading.md index dd68de0..c3892ce 100644 --- a/Upgrading.md +++ b/Upgrading.md @@ -4,6 +4,19 @@ configuration which are non-backwards compatible. ## 0.4.1 to 0.4.2 +### [METRON-1277: STELLAR Add Match functionality to language](https://issues.apache.org/jira/browse/METRON-1277) +As we continue to evolve the Stellar language, it is possible that new keywords +will be added to the language. This may cause compatablity issues where these +reserved words and symbols are used in existing scripts. + +Adding `match` to the Stellar lanaguage has introduced the following new +reserved keywords and symbols: + +`match`, `default`, `{`, `}`, '=>' + +Any stellar expressions which use these keywords not in quotes will need to be +modified. + ### [METRON-1158: Build backend for grouping alerts into meta alerts](https://issues.apache.org/jira/browse/METRON-1158) In order to allow for meta alerts to be queries alongside regular alerts in Elasticsearch 2.x, it is necessary to add an additional field to the templates and mapping for existing sensors. http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/README.md ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/README.md b/metron-stellar/stellar-common/README.md index 5fe9ae7..e6bfc7c 100644 --- a/metron-stellar/stellar-common/README.md +++ b/metron-stellar/stellar-common/README.md @@ -30,6 +30,7 @@ The Stellar language supports the following: * Simple comparison operations `<`, `>`, `<=`, `>=` * Simple equality comparison operations `==`, `!=` * if/then/else comparisons (i.e. `if var1 < 10 then 'less than 10' else '10 or more'`) +* Simple match evaluations (i.e. `match{ var1 < 10 => 'warn', var1 >= 10 => 'critical', default => 'info'}` * Determining whether a field exists (via `exists`) * An `in` operator that works like the `in` in Python * The ability to have parenthesis to make order of operations explicit @@ -41,10 +42,11 @@ The following keywords need to be single quote escaped in order to be used in St | | | | | | | :-----------: | :-----------: | :---------: | :---------: | :---------: | | not | else | exists | if | then | -| and | or | in | NaN | == | -| != | \<= | \> | \>= | \+ | -| \- | \< | ? | \* | / | -| , | | | | | +| and | or | in | NaN | match | +| default | == | != | \<= | \> | +| \>= | \+ | \- | \< | ? | +| \* | / | , | \{ | \} | +| \=> | | | | | Using parens such as: "foo" : "\<ok\>" requires escaping; "foo": "\'\<ok\>\'" @@ -100,6 +102,25 @@ In the core language functions, we support basic functional programming primitiv * `FILTER` - Filters a list by a predicate in the form of a lambda expression. For instance `FILTER([ 'foo', 'bar'], (x ) -> x == 'foo' )` returns `[ 'foo' ]` * `REDUCE` - Applies a function over a list of input. For instance `REDUCE([ 1, 2, 3], (sum, x) -> sum + x, 0 )` returns `6` +### Stellar Language Match Expression + +Stellar provides the capability to write match expressions, which are similar to switch statements commonly found in c like languages. + +The syntax is: +* `match{ logical_expression1 => evaluation expression1, logical_expression2 => evaluation_expression2, default => default_expression}` + +Where: + +* `logical_expression` is a Stellar expression that evaluates to true or false. For instance `var > 0` or `var > 0 AND var2 == 'foo'` or `IF ... THEN ... ELSE` +* `evaluation_expression` is a Stellar Expression +* `default` is a required default return value, should no logical expression match + +> default is required + +> Lambda expressions are supported, but they must be no argument lambdas such as `() -> STATEMENT` + +* Only the first clause that evaluates to true will be executed. + ## Stellar Core Functions | | http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4 ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4 b/metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4 index dd92e3d..fef07ff 100644 --- a/metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4 +++ b/metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4 @@ -67,6 +67,10 @@ ELSE : 'ELSE' | 'else'; NULL : 'null' | 'NULL'; NAN : 'NaN'; +MATCH : 'match' | 'MATCH'; +DEFAULT : 'default' | 'DEFAULT'; +MATCH_ACTION : '=>'; + MINUS : '-'; PLUS : '+'; DIV : '/'; @@ -138,6 +142,7 @@ transformation_expr: | comparison_expr # ComparisonExpression | logical_expr #LogicalExpression | in_expr #InExpression + | match_expr #MatchExpr ; if_expr: @@ -256,6 +261,9 @@ identifier_operand : | functions #func ; +default_operand : + DEFAULT #default + ; lambda_without_args: LPAREN RPAREN LAMBDA_OP transformation_expr @@ -277,4 +285,23 @@ lambda_variable: IDENTIFIER ; +match_expr : + MATCH LBRACE match_clauses COMMA DEFAULT MATCH_ACTION match_clause_action RBRACE #MatchClauses + ; + +match_clauses : + match_clause (COMMA match_clause)* + ; +match_clause : + match_clause_check MATCH_ACTION match_clause_action + ; + +match_clause_action : + transformation_expr #MatchClauseAction + ; + +match_clause_check : + logical_expr #MatchClauseCheckExpr + | conditional_expr #MatchClauseCheckExpr + ; http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/Stellar.tokens ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/Stellar.tokens b/metron-stellar/stellar-common/src/main/java/Stellar.tokens index b2b32fb..2bc28df 100644 --- a/metron-stellar/stellar-common/src/main/java/Stellar.tokens +++ b/metron-stellar/stellar-common/src/main/java/Stellar.tokens @@ -22,27 +22,30 @@ THEN=21 ELSE=22 NULL=23 NAN=24 -MINUS=25 -PLUS=26 -DIV=27 -MUL=28 -LBRACE=29 -RBRACE=30 -LBRACKET=31 -RBRACKET=32 -LPAREN=33 -RPAREN=34 -NIN=35 -EXISTS=36 -EXPONENT=37 -INT_LITERAL=38 -DOUBLE_LITERAL=39 -FLOAT_LITERAL=40 -LONG_LITERAL=41 -IDENTIFIER=42 -STRING_LITERAL=43 -COMMENT=44 -WS=45 +MATCH=25 +DEFAULT=26 +MATCH_ACTION=27 +MINUS=28 +PLUS=29 +DIV=30 +MUL=31 +LBRACE=32 +RBRACE=33 +LBRACKET=34 +RBRACKET=35 +LPAREN=36 +RPAREN=37 +NIN=38 +EXISTS=39 +EXPONENT=40 +INT_LITERAL=41 +DOUBLE_LITERAL=42 +FLOAT_LITERAL=43 +LONG_LITERAL=44 +IDENTIFIER=45 +STRING_LITERAL=46 +COMMENT=47 +WS=48 '->'=2 '"'=3 '\''=4 @@ -57,13 +60,14 @@ WS=45 '?'=18 ':'=19 'NaN'=24 -'-'=25 -'+'=26 -'/'=27 -'*'=28 -'{'=29 -'}'=30 -'['=31 -']'=32 -'('=33 -')'=34 +'=>'=27 +'-'=28 +'+'=29 +'/'=30 +'*'=31 +'{'=32 +'}'=33 +'['=34 +']'=35 +'('=36 +')'=37 http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/StellarLexer.tokens ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/StellarLexer.tokens b/metron-stellar/stellar-common/src/main/java/StellarLexer.tokens index b2b32fb..2bc28df 100644 --- a/metron-stellar/stellar-common/src/main/java/StellarLexer.tokens +++ b/metron-stellar/stellar-common/src/main/java/StellarLexer.tokens @@ -22,27 +22,30 @@ THEN=21 ELSE=22 NULL=23 NAN=24 -MINUS=25 -PLUS=26 -DIV=27 -MUL=28 -LBRACE=29 -RBRACE=30 -LBRACKET=31 -RBRACKET=32 -LPAREN=33 -RPAREN=34 -NIN=35 -EXISTS=36 -EXPONENT=37 -INT_LITERAL=38 -DOUBLE_LITERAL=39 -FLOAT_LITERAL=40 -LONG_LITERAL=41 -IDENTIFIER=42 -STRING_LITERAL=43 -COMMENT=44 -WS=45 +MATCH=25 +DEFAULT=26 +MATCH_ACTION=27 +MINUS=28 +PLUS=29 +DIV=30 +MUL=31 +LBRACE=32 +RBRACE=33 +LBRACKET=34 +RBRACKET=35 +LPAREN=36 +RPAREN=37 +NIN=38 +EXISTS=39 +EXPONENT=40 +INT_LITERAL=41 +DOUBLE_LITERAL=42 +FLOAT_LITERAL=43 +LONG_LITERAL=44 +IDENTIFIER=45 +STRING_LITERAL=46 +COMMENT=47 +WS=48 '->'=2 '"'=3 '\''=4 @@ -57,13 +60,14 @@ WS=45 '?'=18 ':'=19 'NaN'=24 -'-'=25 -'+'=26 -'/'=27 -'*'=28 -'{'=29 -'}'=30 -'['=31 -']'=32 -'('=33 -')'=34 +'=>'=27 +'-'=28 +'+'=29 +'/'=30 +'*'=31 +'{'=32 +'}'=33 +'['=34 +']'=35 +'('=36 +')'=37 http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/StellarCompiler.java ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/StellarCompiler.java b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/StellarCompiler.java index 69564df..72f0d0a 100644 --- a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/StellarCompiler.java +++ b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/StellarCompiler.java @@ -66,6 +66,9 @@ public class StellarCompiler extends StellarBaseListener { public static class ThenExpr implements ShortCircuitOp {} public static class ElseExpr implements ShortCircuitOp {} public static class EndConditional implements ShortCircuitOp {} + public static class MatchClauseCheckExpr implements ShortCircuitOp {} + public static class MatchClauseEnd implements ShortCircuitOp {} + public static class MatchClausesEnd implements ShortCircuitOp {} public static class ExpressionState { Context context; @@ -105,59 +108,77 @@ public class StellarCompiler extends StellarBaseListener { Deque<Token<?>> instanceDeque = new ArrayDeque<>(); { boolean skipElse = false; + boolean skipMatchClauses = false; Token<?> token = null; for (Iterator<Token<?>> it = getTokenDeque().descendingIterator(); it.hasNext(); ) { token = it.next(); //if we've skipped an else previously, then we need to skip the deferred tokens associated with the else. - if(skipElse && token.getUnderlyingType() == ElseExpr.class) { - while(it.hasNext()) { + if (skipElse && token.getUnderlyingType() == ElseExpr.class) { + while (it.hasNext()) { token = it.next(); - if(token.getUnderlyingType() == EndConditional.class) { + if (token.getUnderlyingType() == EndConditional.class) { break; } } skipElse = false; } + if (skipMatchClauses && (token.getUnderlyingType() == MatchClauseEnd.class + || token.getUnderlyingType() == MatchClauseCheckExpr.class)) { + while (it.hasNext()) { + token = it.next(); + if (token.getUnderlyingType() == MatchClausesEnd.class) { + break; + } + } + skipMatchClauses = false; + } /* curr is the current value on the stack. This is the non-deferred actual evaluation for this expression and with the current context. */ Token<?> curr = instanceDeque.peek(); - if( curr != null - && curr.getValue() != null && curr.getValue() instanceof Boolean - && ShortCircuitOp.class.isAssignableFrom(token.getUnderlyingType()) - ) { + if (curr != null && curr.getValue() != null && curr.getValue() instanceof Boolean + && ShortCircuitOp.class.isAssignableFrom(token.getUnderlyingType())) { //if we have a boolean as the current value and the next non-contextual token is a short circuit op //then we need to short circuit possibly - if(token.getUnderlyingType() == BooleanArg.class) { + if (token.getUnderlyingType() == BooleanArg.class) { if (token.getMultiArgContext() != null - && token.getMultiArgContext().getVariety() == FrameContext.BOOLEAN_OR - && (Boolean) (curr.getValue()) - ) { + && token.getMultiArgContext().getVariety() == FrameContext.BOOLEAN_OR + && (Boolean) (curr.getValue())) { //short circuit the or FrameContext.Context context = curr.getMultiArgContext(); shortCircuit(it, context); } else if (token.getMultiArgContext() != null - && token.getMultiArgContext().getVariety() == FrameContext.BOOLEAN_AND - && !(Boolean) (curr.getValue()) - ) { + && token.getMultiArgContext().getVariety() == FrameContext.BOOLEAN_AND + && !(Boolean) (curr.getValue())) { //short circuit the and FrameContext.Context context = curr.getMultiArgContext(); shortCircuit(it, context); } - } - else if(token.getUnderlyingType() == IfExpr.class) { + } else if (token.getUnderlyingType() == IfExpr.class) { //short circuit the if/then/else instanceDeque.pop(); if((Boolean)curr.getValue()) { //choose then skipElse = true; - } - else { + } else { //choose else - while(it.hasNext()) { + while (it.hasNext()) { + Token<?> t = it.next(); + if (t.getUnderlyingType() == ElseExpr.class) { + break; + } + } + } + } else if (token.getUnderlyingType() == MatchClauseCheckExpr.class) { + instanceDeque.pop(); + if ((Boolean) curr.getValue()) { + //skip everything else after lambda + skipMatchClauses = true; + } else { + while (it.hasNext()) { Token<?> t = it.next(); - if(t.getUnderlyingType() == ElseExpr.class) { + if (t.getUnderlyingType() == MatchClauseEnd.class) { break; } } @@ -697,7 +718,62 @@ public class StellarCompiler extends StellarBaseListener { }, DeferredFunction.class, context)); } + @Override + public void exitDefault(StellarParser.DefaultContext ctx) { + expression.tokenDeque.push(new Token<>(true, Boolean.class, getArgContext())); + } + @Override + public void exitMatchClauseCheckExpr(StellarParser.MatchClauseCheckExprContext ctx) { + final FrameContext.Context context = getArgContext(); + // if we are validating, and we have a single variable then we will get + // a null and we need to protect against that + if(ctx.getStart() == ctx.getStop()) { + expression.tokenDeque.push(new Token<>((tokenDeque, state) -> { + if (state.context.getActivityType().equals(ActivityType.VALIDATION_ACTIVITY)) { + if (tokenDeque.size() == 1 && (tokenDeque.peek().getValue() == null + || tokenDeque.peek().getUnderlyingType() == Boolean.class)) { + tokenDeque.pop(); + tokenDeque.add(new Token<>(true, Boolean.class, getArgContext())); + } + + } + }, DeferredFunction.class, context)); + } + expression.tokenDeque.push(new Token<>(new MatchClauseCheckExpr(), MatchClauseCheckExpr.class, getArgContext())); + } + + @Override + public void exitMatchClauseAction(StellarParser.MatchClauseActionContext ctx) { + final FrameContext.Context context = getArgContext(); + expression.tokenDeque.push(new Token<>( (tokenDeque, state) -> { + Token<?> token = popDeque(tokenDeque); + Object value = token.getValue(); + if (value != null && LambdaExpression.class.isAssignableFrom(value.getClass())) { + LambdaExpression expr = (LambdaExpression) value; + // at this time we don't support lambdas with arguments + // there is no context for it as such here + // it is possible that we add match variables, and use those + // as the context, but that could also be done with plain variables + // so it remains to be determined + Object result = expr.apply(new ArrayList<>()); + tokenDeque.push(new Token<>(result, Object.class, context)); + } else { + tokenDeque.push(new Token<>(value, Object.class, context)); + } + + }, DeferredFunction.class, context)); + } + + @Override + public void exitMatch_clause(StellarParser.Match_clauseContext ctx) { + expression.tokenDeque.push(new Token<>(new MatchClauseEnd(), MatchClauseEnd.class, getArgContext())); + } + + @Override + public void exitMatchClauses(StellarParser.MatchClausesContext ctx) { + expression.tokenDeque.push(new Token<>(new MatchClausesEnd(),MatchClausesEnd.class, getArgContext())); + } @Override public void exitComparisonExpressionWithOperator(StellarParser.ComparisonExpressionWithOperatorContext ctx) { @@ -723,7 +799,7 @@ public class StellarCompiler extends StellarBaseListener { } private FrameContext.Context getArgContext() { - return expression.multiArgumentState.isEmpty()?null:expression.multiArgumentState.peek(); + return expression.multiArgumentState.isEmpty() ? null : expression.multiArgumentState.peek(); } private Token<?> popDeque(Deque<Token<?>> tokenDeque) { @@ -733,6 +809,8 @@ public class StellarCompiler extends StellarBaseListener { return tokenDeque.pop(); } - public Expression getExpression() {return expression;} + public Expression getExpression() { + return expression; + } } http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarBaseListener.java ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarBaseListener.java b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarBaseListener.java index d2806b9..3528737 100644 --- a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarBaseListener.java +++ b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarBaseListener.java @@ -133,6 +133,18 @@ public class StellarBaseListener implements StellarListener { * * <p>The default implementation does nothing.</p> */ + @Override public void enterMatchExpr(StellarParser.MatchExprContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatchExpr(StellarParser.MatchExprContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ @Override public void enterIf_expr(StellarParser.If_exprContext ctx) { } /** * {@inheritDoc} @@ -721,6 +733,18 @@ public class StellarBaseListener implements StellarListener { * * <p>The default implementation does nothing.</p> */ + @Override public void enterDefault(StellarParser.DefaultContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitDefault(StellarParser.DefaultContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ @Override public void enterLambda_without_args(StellarParser.Lambda_without_argsContext ctx) { } /** * {@inheritDoc} @@ -776,6 +800,66 @@ public class StellarBaseListener implements StellarListener { * <p>The default implementation does nothing.</p> */ @Override public void exitLambda_variable(StellarParser.Lambda_variableContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void enterMatchClauses(StellarParser.MatchClausesContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatchClauses(StellarParser.MatchClausesContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void enterMatch_clauses(StellarParser.Match_clausesContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatch_clauses(StellarParser.Match_clausesContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void enterMatch_clause(StellarParser.Match_clauseContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatch_clause(StellarParser.Match_clauseContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void enterMatchClauseAction(StellarParser.MatchClauseActionContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatchClauseAction(StellarParser.MatchClauseActionContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void enterMatchClauseCheckExpr(StellarParser.MatchClauseCheckExprContext ctx) { } + /** + * {@inheritDoc} + * + * <p>The default implementation does nothing.</p> + */ + @Override public void exitMatchClauseCheckExpr(StellarParser.MatchClauseCheckExprContext ctx) { } /** * {@inheritDoc} http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarLexer.java ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarLexer.java b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarLexer.java index 330b2ef..df661a9 100644 --- a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarLexer.java +++ b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarLexer.java @@ -40,10 +40,10 @@ public class StellarLexer extends Lexer { IN=1, LAMBDA_OP=2, DOUBLE_QUOTE=3, SINGLE_QUOTE=4, COMMA=5, PERIOD=6, AND=7, OR=8, NOT=9, TRUE=10, FALSE=11, EQ=12, NEQ=13, LT=14, LTE=15, GT=16, GTE=17, QUESTION=18, COLON=19, IF=20, THEN=21, ELSE=22, NULL=23, NAN=24, - MINUS=25, PLUS=26, DIV=27, MUL=28, LBRACE=29, RBRACE=30, LBRACKET=31, - RBRACKET=32, LPAREN=33, RPAREN=34, NIN=35, EXISTS=36, EXPONENT=37, INT_LITERAL=38, - DOUBLE_LITERAL=39, FLOAT_LITERAL=40, LONG_LITERAL=41, IDENTIFIER=42, STRING_LITERAL=43, - COMMENT=44, WS=45; + MATCH=25, DEFAULT=26, MATCH_ACTION=27, MINUS=28, PLUS=29, DIV=30, MUL=31, + LBRACE=32, RBRACE=33, LBRACKET=34, RBRACKET=35, LPAREN=36, RPAREN=37, + NIN=38, EXISTS=39, EXPONENT=40, INT_LITERAL=41, DOUBLE_LITERAL=42, FLOAT_LITERAL=43, + LONG_LITERAL=44, IDENTIFIER=45, STRING_LITERAL=46, COMMENT=47, WS=48; public static String[] modeNames = { "DEFAULT_MODE" }; @@ -51,27 +51,28 @@ public class StellarLexer extends Lexer { public static final String[] ruleNames = { "IN", "LAMBDA_OP", "DOUBLE_QUOTE", "SINGLE_QUOTE", "COMMA", "PERIOD", "AND", "OR", "NOT", "TRUE", "FALSE", "EQ", "NEQ", "LT", "LTE", "GT", "GTE", - "QUESTION", "COLON", "IF", "THEN", "ELSE", "NULL", "NAN", "MINUS", "PLUS", - "DIV", "MUL", "LBRACE", "RBRACE", "LBRACKET", "RBRACKET", "LPAREN", "RPAREN", - "NIN", "EXISTS", "EXPONENT", "INT_LITERAL", "DOUBLE_LITERAL", "FLOAT_LITERAL", - "LONG_LITERAL", "IDENTIFIER", "STRING_LITERAL", "COMMENT", "WS", "ZERO", - "FIRST_DIGIT", "DIGIT", "D", "E", "F", "L", "EOL", "IDENTIFIER_START", - "IDENTIFIER_MIDDLE", "IDENTIFIER_END" + "QUESTION", "COLON", "IF", "THEN", "ELSE", "NULL", "NAN", "MATCH", "DEFAULT", + "MATCH_ACTION", "MINUS", "PLUS", "DIV", "MUL", "LBRACE", "RBRACE", "LBRACKET", + "RBRACKET", "LPAREN", "RPAREN", "NIN", "EXISTS", "EXPONENT", "INT_LITERAL", + "DOUBLE_LITERAL", "FLOAT_LITERAL", "LONG_LITERAL", "IDENTIFIER", "STRING_LITERAL", + "COMMENT", "WS", "ZERO", "FIRST_DIGIT", "DIGIT", "D", "E", "F", "L", "EOL", + "IDENTIFIER_START", "IDENTIFIER_MIDDLE", "IDENTIFIER_END" }; private static final String[] _LITERAL_NAMES = { null, null, "'->'", "'\"'", "'''", "','", "'.'", null, null, null, null, null, "'=='", "'!='", "'<'", "'<='", "'>'", "'>='", "'?'", "':'", null, - null, null, null, "'NaN'", "'-'", "'+'", "'/'", "'*'", "'{'", "'}'", "'['", - "']'", "'('", "')'" + null, null, null, "'NaN'", null, null, "'=>'", "'-'", "'+'", "'/'", "'*'", + "'{'", "'}'", "'['", "']'", "'('", "')'" }; private static final String[] _SYMBOLIC_NAMES = { null, "IN", "LAMBDA_OP", "DOUBLE_QUOTE", "SINGLE_QUOTE", "COMMA", "PERIOD", "AND", "OR", "NOT", "TRUE", "FALSE", "EQ", "NEQ", "LT", "LTE", "GT", "GTE", - "QUESTION", "COLON", "IF", "THEN", "ELSE", "NULL", "NAN", "MINUS", "PLUS", - "DIV", "MUL", "LBRACE", "RBRACE", "LBRACKET", "RBRACKET", "LPAREN", "RPAREN", - "NIN", "EXISTS", "EXPONENT", "INT_LITERAL", "DOUBLE_LITERAL", "FLOAT_LITERAL", - "LONG_LITERAL", "IDENTIFIER", "STRING_LITERAL", "COMMENT", "WS" + "QUESTION", "COLON", "IF", "THEN", "ELSE", "NULL", "NAN", "MATCH", "DEFAULT", + "MATCH_ACTION", "MINUS", "PLUS", "DIV", "MUL", "LBRACE", "RBRACE", "LBRACKET", + "RBRACKET", "LPAREN", "RPAREN", "NIN", "EXISTS", "EXPONENT", "INT_LITERAL", + "DOUBLE_LITERAL", "FLOAT_LITERAL", "LONG_LITERAL", "IDENTIFIER", "STRING_LITERAL", + "COMMENT", "WS" }; public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES); @@ -128,174 +129,188 @@ public class StellarLexer extends Lexer { public ATN getATN() { return _ATN; } public static final String _serializedATN = - "\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\2/\u01d6\b\1\4\2\t"+ - "\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7\4\b\t\b\4\t\t\t\4\n\t\n\4\13"+ - "\t\13\4\f\t\f\4\r\t\r\4\16\t\16\4\17\t\17\4\20\t\20\4\21\t\21\4\22\t\22"+ - "\4\23\t\23\4\24\t\24\4\25\t\25\4\26\t\26\4\27\t\27\4\30\t\30\4\31\t\31"+ - "\4\32\t\32\4\33\t\33\4\34\t\34\4\35\t\35\4\36\t\36\4\37\t\37\4 \t \4!"+ - "\t!\4\"\t\"\4#\t#\4$\t$\4%\t%\4&\t&\4\'\t\'\4(\t(\4)\t)\4*\t*\4+\t+\4"+ - ",\t,\4-\t-\4.\t.\4/\t/\4\60\t\60\4\61\t\61\4\62\t\62\4\63\t\63\4\64\t"+ - "\64\4\65\t\65\4\66\t\66\4\67\t\67\48\t8\49\t9\3\2\3\2\3\2\3\2\5\2x\n\2"+ - "\3\3\3\3\3\3\3\4\3\4\3\5\3\5\3\6\3\6\3\7\3\7\3\b\3\b\3\b\3\b\3\b\3\b\3"+ - "\b\3\b\5\b\u008d\n\b\3\t\3\t\3\t\3\t\3\t\3\t\5\t\u0095\n\t\3\n\3\n\3\n"+ - "\3\n\3\n\3\n\5\n\u009d\n\n\3\13\3\13\3\13\3\13\3\13\3\13\3\13\3\13\5\13"+ - "\u00a7\n\13\3\f\3\f\3\f\3\f\3\f\3\f\3\f\3\f\3\f\3\f\5\f\u00b3\n\f\3\r"+ - "\3\r\3\r\3\16\3\16\3\16\3\17\3\17\3\20\3\20\3\20\3\21\3\21\3\22\3\22\3"+ - "\22\3\23\3\23\3\24\3\24\3\25\3\25\3\25\3\25\5\25\u00cd\n\25\3\26\3\26"+ - "\3\26\3\26\3\26\3\26\3\26\3\26\5\26\u00d7\n\26\3\27\3\27\3\27\3\27\3\27"+ - "\3\27\3\27\3\27\5\27\u00e1\n\27\3\30\3\30\3\30\3\30\3\30\3\30\3\30\3\30"+ - "\5\30\u00eb\n\30\3\31\3\31\3\31\3\31\3\32\3\32\3\33\3\33\3\34\3\34\3\35"+ - "\3\35\3\36\3\36\3\37\3\37\3 \3 \3!\3!\3\"\3\"\3#\3#\3$\3$\3$\3$\3$\3$"+ - "\3$\3$\3$\3$\3$\3$\5$\u0111\n$\3%\3%\3%\3%\3%\3%\3%\3%\3%\3%\3%\3%\5%"+ - "\u011f\n%\3&\3&\3&\5&\u0124\n&\3&\6&\u0127\n&\r&\16&\u0128\3\'\5\'\u012c"+ - "\n\'\3\'\3\'\5\'\u0130\n\'\3\'\3\'\7\'\u0134\n\'\f\'\16\'\u0137\13\'\5"+ - "\'\u0139\n\'\3(\3(\3(\7(\u013e\n(\f(\16(\u0141\13(\3(\5(\u0144\n(\3(\5"+ - "(\u0147\n(\3(\3(\6(\u014b\n(\r(\16(\u014c\3(\5(\u0150\n(\3(\5(\u0153\n"+ - "(\3(\3(\3(\5(\u0158\n(\3(\3(\5(\u015c\n(\3(\3(\5(\u0160\n(\3)\3)\3)\7"+ - ")\u0165\n)\f)\16)\u0168\13)\3)\5)\u016b\n)\3)\3)\3)\5)\u0170\n)\3)\3)"+ - "\6)\u0174\n)\r)\16)\u0175\3)\5)\u0179\n)\3)\3)\3)\3)\5)\u017f\n)\3)\3"+ - ")\5)\u0183\n)\3*\3*\3*\3+\3+\3+\7+\u018b\n+\f+\16+\u018e\13+\3+\3+\5+"+ - "\u0192\n+\3,\3,\3,\3,\7,\u0198\n,\f,\16,\u019b\13,\3,\3,\3,\3,\3,\3,\7"+ - ",\u01a3\n,\f,\16,\u01a6\13,\3,\3,\5,\u01aa\n,\3-\3-\3-\3-\6-\u01b0\n-"+ - "\r-\16-\u01b1\3-\3-\5-\u01b6\n-\3-\3-\3.\6.\u01bb\n.\r.\16.\u01bc\3.\3"+ - 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"\2\2\u018c\u018f\3\2\2\2\u018d\u018b\3\2\2\2\u018e\u0190\5Q)\2\u018f\u018e"+ + "\3\2\2\2\u018f\u0190\3\2\2\2\u0190\u0191\3\2\2\2\u0191\u0192\5m\67\2\u0192"+ + "\u01a8\3\2\2\2\u0193\u0195\59\35\2\u0194\u0193\3\2\2\2\u0194\u0195\3\2"+ + "\2\2\u0195\u0196\3\2\2\2\u0196\u0198\5\r\7\2\u0197\u0199\5g\64\2\u0198"+ + "\u0197\3\2\2\2\u0199\u019a\3\2\2\2\u019a\u0198\3\2\2\2\u019a\u019b\3\2"+ + "\2\2\u019b\u019d\3\2\2\2\u019c\u019e\5Q)\2\u019d\u019c\3\2\2\2\u019d\u019e"+ + "\3\2\2\2\u019e\u019f\3\2\2\2\u019f\u01a0\5m\67\2\u01a0\u01a8\3\2\2\2\u01a1"+ + "\u01a3\5S*\2\u01a2\u01a4\5Q)\2\u01a3\u01a2\3\2\2\2\u01a3\u01a4\3\2\2\2"+ + "\u01a4\u01a5\3\2\2\2\u01a5\u01a6\5m\67\2\u01a6\u01a8\3\2\2\2\u01a7\u0186"+ + "\3\2\2\2\u01a7\u0194\3\2\2\2\u01a7\u01a1\3\2\2\2\u01a8X\3\2\2\2\u01a9"+ + "\u01aa\5S*\2\u01aa\u01ab\5o8\2\u01abZ\3\2\2\2\u01ac\u01b7\5s:\2\u01ad"+ + "\u01b1\5s:\2\u01ae\u01b0\5u;\2\u01af\u01ae\3\2\2\2\u01b0\u01b3\3\2\2\2"+ + "\u01b1\u01af\3\2\2\2\u01b1\u01b2\3\2\2\2\u01b2\u01b4\3\2\2\2\u01b3\u01b1"+ + "\3\2\2\2\u01b4\u01b5\5w<\2\u01b5\u01b7\3\2\2\2\u01b6\u01ac\3\2\2\2\u01b6"+ + "\u01ad\3\2\2\2\u01b7\\\3\2\2\2\u01b8\u01be\5\t\5\2\u01b9\u01bd\n\2\2\2"+ + "\u01ba\u01bb\7^\2\2\u01bb\u01bd\t\3\2\2\u01bc\u01b9\3\2\2\2\u01bc\u01ba"+ + "\3\2\2\2\u01bd\u01c0\3\2\2\2\u01be\u01bc\3\2\2\2\u01be\u01bf\3\2\2\2\u01bf"+ + "\u01c1\3\2\2\2\u01c0\u01be\3\2\2\2\u01c1\u01c2\5\t\5\2\u01c2\u01cf\3\2"+ + "\2\2\u01c3\u01c9\5\7\4\2\u01c4\u01c8\n\4\2\2\u01c5\u01c6\7^\2\2\u01c6"+ + "\u01c8\t\5\2\2\u01c7\u01c4\3\2\2\2\u01c7\u01c5\3\2\2\2\u01c8\u01cb\3\2"+ + "\2\2\u01c9\u01c7\3\2\2\2\u01c9\u01ca\3\2\2\2\u01ca\u01cc\3\2\2\2\u01cb"+ + "\u01c9\3\2\2\2\u01cc\u01cd\5\7\4\2\u01cd\u01cf\3\2\2\2\u01ce\u01b8\3\2"+ + "\2\2\u01ce\u01c3\3\2\2\2\u01cf^\3\2\2\2\u01d0\u01d1\7\61\2\2\u01d1\u01d2"+ + "\7\61\2\2\u01d2\u01d4\3\2\2\2\u01d3\u01d5\13\2\2\2\u01d4\u01d3\3\2\2\2"+ + "\u01d5\u01d6\3\2\2\2\u01d6\u01d7\3\2\2\2\u01d6\u01d4\3\2\2\2\u01d7\u01da"+ + "\3\2\2\2\u01d8\u01db\5q9\2\u01d9\u01db\7\2\2\3\u01da\u01d8\3\2\2\2\u01da"+ + "\u01d9\3\2\2\2\u01db\u01dc\3\2\2\2\u01dc\u01dd\b\60\2\2\u01dd`\3\2\2\2"+ + "\u01de\u01e0\t\6\2\2\u01df\u01de\3\2\2\2\u01e0\u01e1\3\2\2\2\u01e1\u01df"+ + "\3\2\2\2\u01e1\u01e2\3\2\2\2\u01e2\u01e3\3\2\2\2\u01e3\u01e4\b\61\2\2"+ + "\u01e4b\3\2\2\2\u01e5\u01e6\7\62\2\2\u01e6d\3\2\2\2\u01e7\u01e8\4\63;"+ + "\2\u01e8f\3\2\2\2\u01e9\u01ea\4\62;\2\u01eah\3\2\2\2\u01eb\u01ec\t\7\2"+ + "\2\u01ecj\3\2\2\2\u01ed\u01ee\t\b\2\2\u01eel\3\2\2\2\u01ef\u01f0\t\t\2"+ + "\2\u01f0n\3\2\2\2\u01f1\u01f2\t\n\2\2\u01f2p\3\2\2\2\u01f3\u01f4\7\f\2"+ + "\2\u01f4r\3\2\2\2\u01f5\u01f6\t\13\2\2\u01f6t\3\2\2\2\u01f7\u01f8\t\f"+ + "\2\2\u01f8v\3\2\2\2\u01f9\u01fa\t\r\2\2\u01fax\3\2\2\2\61\2}\u0092\u009a"+ + "\u00a2\u00ac\u00b8\u00d2\u00dc\u00e6\u00f0\u0100\u0110\u0135\u0143\u0148"+ + "\u014d\u0150\u0154\u015a\u015d\u0164\u0168\u016b\u0171\u0174\u0177\u017c"+ + "\u0180\u0184\u018b\u018f\u0194\u019a\u019d\u01a3\u01a7\u01b1\u01b6\u01bc"+ + "\u01be\u01c7\u01c9\u01ce\u01d6\u01da\u01e1\3\b\2\2"; public static final ATN _ATN = new ATNDeserializer().deserialize(_serializedATN.toCharArray()); static { http://git-wip-us.apache.org/repos/asf/metron/blob/c749b517/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarListener.java ---------------------------------------------------------------------- diff --git a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarListener.java b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarListener.java index f07efaa..718a4fe 100644 --- a/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarListener.java +++ b/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/generated/StellarListener.java @@ -29,12 +29,14 @@ import org.antlr.v4.runtime.tree.ParseTreeListener; */ public interface StellarListener extends ParseTreeListener { /** - * Enter a parse tree produced by {@link StellarParser#transformation}. + * Enter a parse tree produced by the {@code transformation} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterTransformation(StellarParser.TransformationContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#transformation}. + * Exit a parse tree produced by the {@code transformation} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitTransformation(StellarParser.TransformationContext ctx); @@ -123,32 +125,50 @@ public interface StellarListener extends ParseTreeListener { */ void exitInExpression(StellarParser.InExpressionContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#if_expr}. + * Enter a parse tree produced by the {@code MatchExpr} + * labeled alternative in {@link StellarParser#transformation_expr}. + * @param ctx the parse tree + */ + void enterMatchExpr(StellarParser.MatchExprContext ctx); + /** + * Exit a parse tree produced by the {@code MatchExpr} + * labeled alternative in {@link StellarParser#transformation_expr}. + * @param ctx the parse tree + */ + void exitMatchExpr(StellarParser.MatchExprContext ctx); + /** + * Enter a parse tree produced by the {@code if_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterIf_expr(StellarParser.If_exprContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#if_expr}. + * Exit a parse tree produced by the {@code if_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitIf_expr(StellarParser.If_exprContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#then_expr}. + * Enter a parse tree produced by the {@code then_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterThen_expr(StellarParser.Then_exprContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#then_expr}. + * Exit a parse tree produced by the {@code then_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitThen_expr(StellarParser.Then_exprContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#else_expr}. + * Enter a parse tree produced by the {@code else_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterElse_expr(StellarParser.Else_exprContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#else_expr}. + * Exit a parse tree produced by the {@code else_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitElse_expr(StellarParser.Else_exprContext ctx); @@ -213,12 +233,14 @@ public interface StellarListener extends ParseTreeListener { */ void exitBoleanExpression(StellarParser.BoleanExpressionContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#b_expr}. + * Enter a parse tree produced by the {@code b_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterB_expr(StellarParser.B_exprContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#b_expr}. + * Exit a parse tree produced by the {@code b_expr} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitB_expr(StellarParser.B_exprContext ctx); @@ -295,12 +317,14 @@ public interface StellarListener extends ParseTreeListener { */ void exitOperand(StellarParser.OperandContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#transformation_entity}. + * Enter a parse tree produced by the {@code transformation_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterTransformation_entity(StellarParser.Transformation_entityContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#transformation_entity}. + * Exit a parse tree produced by the {@code transformation_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitTransformation_entity(StellarParser.Transformation_entityContext ctx); @@ -317,52 +341,62 @@ public interface StellarListener extends ParseTreeListener { */ void exitComparisonOp(StellarParser.ComparisonOpContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#func_args}. + * Enter a parse tree produced by the {@code func_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterFunc_args(StellarParser.Func_argsContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#func_args}. + * Exit a parse tree produced by the {@code func_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitFunc_args(StellarParser.Func_argsContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#op_list}. + * Enter a parse tree produced by the {@code op_list} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterOp_list(StellarParser.Op_listContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#op_list}. + * Exit a parse tree produced by the {@code op_list} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitOp_list(StellarParser.Op_listContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#list_entity}. + * Enter a parse tree produced by the {@code list_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterList_entity(StellarParser.List_entityContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#list_entity}. + * Exit a parse tree produced by the {@code list_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitList_entity(StellarParser.List_entityContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#kv_list}. + * Enter a parse tree produced by the {@code kv_list} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterKv_list(StellarParser.Kv_listContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#kv_list}. + * Exit a parse tree produced by the {@code kv_list} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitKv_list(StellarParser.Kv_listContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#map_entity}. + * Enter a parse tree produced by the {@code map_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterMap_entity(StellarParser.Map_entityContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#map_entity}. + * Exit a parse tree produced by the {@code map_entity} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitMap_entity(StellarParser.Map_entityContext ctx); @@ -691,53 +725,135 @@ public interface StellarListener extends ParseTreeListener { */ void exitFunc(StellarParser.FuncContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#lambda_without_args}. + * Enter a parse tree produced by the {@code default} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void enterDefault(StellarParser.DefaultContext ctx); + /** + * Exit a parse tree produced by the {@code default} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void exitDefault(StellarParser.DefaultContext ctx); + /** + * Enter a parse tree produced by the {@code lambda_without_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterLambda_without_args(StellarParser.Lambda_without_argsContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#lambda_without_args}. + * Exit a parse tree produced by the {@code lambda_without_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitLambda_without_args(StellarParser.Lambda_without_argsContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#lambda_with_args}. + * Enter a parse tree produced by the {@code lambda_with_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterLambda_with_args(StellarParser.Lambda_with_argsContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#lambda_with_args}. + * Exit a parse tree produced by the {@code lambda_with_args} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitLambda_with_args(StellarParser.Lambda_with_argsContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#lambda_variables}. + * Enter a parse tree produced by the {@code lambda_variables} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterLambda_variables(StellarParser.Lambda_variablesContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#lambda_variables}. + * Exit a parse tree produced by the {@code lambda_variables} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitLambda_variables(StellarParser.Lambda_variablesContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#single_lambda_variable}. + * Enter a parse tree produced by the {@code single_lambda_variable} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterSingle_lambda_variable(StellarParser.Single_lambda_variableContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#single_lambda_variable}. + * Exit a parse tree produced by the {@code single_lambda_variable} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitSingle_lambda_variable(StellarParser.Single_lambda_variableContext ctx); /** - * Enter a parse tree produced by {@link StellarParser#lambda_variable}. + * Enter a parse tree produced by the {@code lambda_variable} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void enterLambda_variable(StellarParser.Lambda_variableContext ctx); /** - * Exit a parse tree produced by {@link StellarParser#lambda_variable}. + * Exit a parse tree produced by the {@code lambda_variable} + * labeled alternative in {@link StellarParser#default_operand}. * @param ctx the parse tree */ void exitLambda_variable(StellarParser.Lambda_variableContext ctx); + /** + * Enter a parse tree produced by the {@code MatchClauses} + * labeled alternative in {@link StellarParser#match_expr}. + * @param ctx the parse tree + */ + void enterMatchClauses(StellarParser.MatchClausesContext ctx); + /** + * Exit a parse tree produced by the {@code MatchClauses} + * labeled alternative in {@link StellarParser#match_expr}. + * @param ctx the parse tree + */ + void exitMatchClauses(StellarParser.MatchClausesContext ctx); + /** + * Enter a parse tree produced by the {@code match_clauses} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void enterMatch_clauses(StellarParser.Match_clausesContext ctx); + /** + * Exit a parse tree produced by the {@code match_clauses} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void exitMatch_clauses(StellarParser.Match_clausesContext ctx); + /** + * Enter a parse tree produced by the {@code match_clause} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void enterMatch_clause(StellarParser.Match_clauseContext ctx); + /** + * Exit a parse tree produced by the {@code match_clause} + * labeled alternative in {@link StellarParser#default_operand}. + * @param ctx the parse tree + */ + void exitMatch_clause(StellarParser.Match_clauseContext ctx); + /** + * Enter a parse tree produced by the {@code MatchClauseAction} + * labeled alternative in {@link StellarParser#match_clause_action}. + * @param ctx the parse tree + */ + void enterMatchClauseAction(StellarParser.MatchClauseActionContext ctx); + /** + * Exit a parse tree produced by the {@code MatchClauseAction} + * labeled alternative in {@link StellarParser#match_clause_action}. + * @param ctx the parse tree + */ + void exitMatchClauseAction(StellarParser.MatchClauseActionContext ctx); + /** + * Enter a parse tree produced by the {@code MatchClauseCheckExpr} + * labeled alternative in {@link StellarParser#match_clause_check}. + * @param ctx the parse tree + */ + void enterMatchClauseCheckExpr(StellarParser.MatchClauseCheckExprContext ctx); + /** + * Exit a parse tree produced by the {@code MatchClauseCheckExpr} + * labeled alternative in {@link StellarParser#match_clause_check}. + * @param ctx the parse tree + */ + void exitMatchClauseCheckExpr(StellarParser.MatchClauseCheckExprContext ctx); } \ No newline at end of file
