public static ExprNode MathGetExpr(IParseTree ctx, IDictionary <ITree, ExprNode> astExprNodeMap, ConfigurationInformation configurationInformation)
{
var count = 1;
var @base = ASTExprHelper.ExprCollectSubNodes(ctx.GetChild(0), 0, astExprNodeMap)[0];
while (true)
{
int token = ASTUtil.GetAssertTerminatedTokenType(ctx.GetChild(count));
var mathArithTypeEnum = TokenToMathEnum(token);
var right = ASTExprHelper.ExprCollectSubNodes(ctx.GetChild(count + 1), 0, astExprNodeMap)[0];
var math = new ExprMathNode(mathArithTypeEnum,
configurationInformation.EngineDefaults.ExpressionConfig.IsIntegerDivision,
configurationInformation.EngineDefaults.ExpressionConfig.IsDivisionByZeroReturnsNull);
math.AddChildNode(@base);
math.AddChildNode(right);
@base = math;
count += 2;
if (count >= ctx.ChildCount)
{
break;
}
}
return(@base);
}
public static IList <ColumnDesc> GetColTypeList(EsperEPL2GrammarParser.CreateColumnListContext ctx)
{
if (ctx == null)
{
return(Collections.GetEmptyList <ColumnDesc>());
}
IList <ColumnDesc> result = new List <ColumnDesc>(ctx.createColumnListElement().Length);
foreach (var colctx in ctx.createColumnListElement())
{
IList <EsperEPL2GrammarParser.ClassIdentifierContext> idents = colctx.classIdentifier();
var name = ASTUtil.UnescapeClassIdent(idents[0]);
string type;
if (colctx.VALUE_NULL() != null)
{
type = null;
}
else
{
type = ASTUtil.UnescapeClassIdent(idents[1]);
}
var array = colctx.b != null;
var primitiveArray = ValidateIsPrimitiveArray(colctx.p);
result.Add(new ColumnDesc(name, type, array, primitiveArray));
}
return(result);
}
public static String PrintNode(ITree node)
{
var writer = new StringWriter();
ASTUtil.DumpAST(writer, node, 0);
return(writer.ToString());
}
/// <summary>
/// Resolve "table" and "table.property" when nested-property, not chainable
/// </summary>
public static ExprTableAccessNode CheckTableNameGetExprForProperty(TableService tableService, string propertyName)
{
// handle "var_name" alone, without chained, like an simple event property
var index = ASTUtil.UnescapedIndexOfDot(propertyName);
if (index == -1)
{
if (tableService.GetTableMetadata(propertyName) != null)
{
return(new ExprTableAccessNodeTopLevel(propertyName));
}
return(null);
}
// handle "var_name.column", without chained, like a nested event property
var tableName = ASTUtil.UnescapeDot(propertyName.Substring(0, index));
if (tableService.GetTableMetadata(tableName) == null)
{
return(null);
}
// it is a tables's subproperty
var sub = propertyName.Substring(index + 1);
return(new ExprTableAccessNodeSubprop(tableName, sub));
}
/// <summary>
/// Resolve "table.property", not chainable
/// </summary>
public static Pair <ExprTableAccessNode, ExprDotNode> CheckTableNameGetExprForSubproperty(TableService tableService, string tableName, string subproperty)
{
var metadata = tableService.GetTableMetadata(tableName);
if (metadata == null)
{
return(null);
}
var index = ASTUtil.UnescapedIndexOfDot(subproperty);
if (index == -1)
{
if (metadata.KeyTypes.Length > 0)
{
return(null);
}
var tableNodeX = new ExprTableAccessNodeSubprop(tableName, subproperty);
return(new Pair <ExprTableAccessNode, ExprDotNode>(tableNodeX, null));
}
// we have a nested subproperty such as "tablename.subproperty.abc"
IList <ExprChainedSpec> chainedSpecs = new List <ExprChainedSpec>(1);
chainedSpecs.Add(new ExprChainedSpec(subproperty.Substring(index + 1), Collections.GetEmptyList <ExprNode>(), true));
var tableNode = new ExprTableAccessNodeSubprop(tableName, subproperty.Substring(0, index));
var dotNode = new ExprDotNode(chainedSpecs, false, false);
dotNode.AddChildNode(tableNode);
return(new Pair <ExprTableAccessNode, ExprDotNode>(tableNode, dotNode));
}
public static FilterSpecRaw WalkFilterSpec(EsperEPL2GrammarParser.EventFilterExpressionContext ctx, PropertyEvalSpec propertyEvalSpec, IDictionary <ITree, ExprNode> astExprNodeMap)
{
var eventName = ASTUtil.UnescapeClassIdent(ctx.classIdentifier());
var exprNodes = ctx.expressionList() != null?ASTExprHelper.ExprCollectSubNodes(ctx.expressionList(), 0, astExprNodeMap) : new List <ExprNode>(1);
return(new FilterSpecRaw(eventName, exprNodes, propertyEvalSpec));
}
public void TestParse()
{
Object result;
Assert.AreEqual("abc", ParseLoadJson("\"abc\""));
Assert.AreEqual("http://www.uri.com", ParseLoadJson("\"http://www.uri.com\""));
Assert.AreEqual("new\nline", ParseLoadJson("\"new\\nline\""));
Assert.AreEqual(" ~ ", ParseLoadJson("\" \\u007E \""));
Assert.AreEqual("/", ParseLoadJson("\"\\/\""));
Assert.AreEqual(true, ParseLoadJson("true"));
Assert.AreEqual(false, ParseLoadJson("false"));
Assert.AreEqual(null, ParseLoadJson("null"));
Assert.AreEqual(10, ParseLoadJson("10"));
Assert.AreEqual(-10, ParseLoadJson("-10"));
Assert.AreEqual(20L, ParseLoadJson("20L"));
Assert.AreEqual(5.5d, ParseLoadJson("5.5"));
result = ParseLoadJson("{\"name\":\"myname\",\"value\":5}");
EPAssertionUtil.AssertPropsMap((Map)result, "name,value".Split(','), "myname", 5);
result = ParseLoadJson("{name:\"myname\",value:5}");
EPAssertionUtil.AssertPropsMap((Map)result, "name,value".Split(','), "myname", 5);
result = ParseLoadJson("[\"one\",2]");
EPAssertionUtil.AssertEqualsExactOrder(new Object[] { "one", 2 }, (IList <object>)result);
result = ParseLoadJson("{\"one\": { 'a' : 2 } }");
Map inner = (Map)((Map)result).Get("one");
Assert.AreEqual(1, inner.Count);
String json = "{\n" +
" \"glossary\": {\n" +
" \"title\": \"example glossary\",\n" +
"\t\t\"GlossDiv\": {\n" +
" \"title\": \"S\",\n" +
"\t\t\t\"GlossList\": {\n" +
" \"GlossEntry\": {\n" +
" \"ID\": \"SGML\",\n" +
"\t\t\t\t\t\"SortAs\": \"SGML\",\n" +
"\t\t\t\t\t\"GlossTerm\": \"Standard Generalized Markup Language\",\n" +
"\t\t\t\t\t\"Acronym\": \"SGML\",\n" +
"\t\t\t\t\t\"Abbrev\": \"ISO 8879:1986\",\n" +
"\t\t\t\t\t\"GlossDef\": {\n" +
" \"para\": \"A meta-markup language, used to create markup languages such as DocBook.\",\n" +
"\t\t\t\t\t\t\"GlossSeeAlso\": [\"GML\", \"XML\"]\n" +
" },\n" +
"\t\t\t\t\t\"GlossSee\": \"markup\"\n" +
" }\n" +
" }\n" +
" }\n" +
" }\n" +
"}";
ITree tree = ParseJson(json).First;
ASTUtil.DumpAST(tree);
Object loaded = ParseLoadJson(json);
Assert.AreEqual("{glossary={title=example glossary, GlossDiv={title=S, GlossList={GlossEntry={ID=SGML, SortAs=SGML, GlossTerm=Standard Generalized Markup Language, Acronym=SGML, Abbrev=ISO 8879:1986, GlossDef={para=A meta-markup language, used to create markup languages such as DocBook., GlossSeeAlso=[GML, XML]}, GlossSee=markup}}}}}", loaded.Render());
}
public void TestEscapeDot()
{
String [][] inout = new String[][] {
new [] { "a", "a" },
new [] { "", "" },
new [] { " ", " " },
new [] { ".", "\\." },
new [] { ". .", "\\. \\." },
new [] { "a.", "a\\." },
new [] { ".a", "\\.a" },
new [] { "a.b", "a\\.b" },
new [] { "a..b", "a\\.\\.b" },
new [] { "a\\.b", "a\\.b" },
new [] { "a\\..b", "a\\.\\.b" },
new [] { "a.\\..b", "a\\.\\.\\.b" },
new [] { "a.b.c", "a\\.b\\.c" }
};
for (int i = 0; i < inout.Length; i++)
{
String @in = inout[i][0];
String expected = inout[i][1];
Assert.AreEqual(expected, ASTUtil.EscapeDot(@in), "for input " + @in);
}
}
public void TestUnescapeIndexOf()
{
Object [][] inout = new Object[][] {
new Object[] { "a", -1 },
new Object[] { "", -1 },
new Object[] { " ", -1 },
new Object[] { ".", 0 },
new Object[] { " . .", 1 },
new Object[] { "a.", 1 },
new Object[] { ".a", 0 },
new Object[] { "a.b", 1 },
new Object[] { "a..b", 1 },
new Object[] { "a\\.b", -1 },
new Object[] { "a.\\..b", 1 },
new Object[] { "a\\..b", 3 },
new Object[] { "a.b.c", 1 },
new Object[] { "abc.", 3 }
};
for (int i = 0; i < inout.Length; i++)
{
var @in = (String)inout[i][0];
var expected = (int?)inout[i][1];
Assert.AreEqual(expected, ASTUtil.UnescapedIndexOfDot(@in), "for input " + @in);
}
}
private static CreateSchemaDesc GetSchemaDesc(EsperEPL2GrammarParser.CreateSchemaDefContext ctx, AssignedType assignedType)
{
var schemaName = ctx.name.Text;
var columnTypes = GetColTypeList(ctx.createColumnList());
// get model-after types (could be multiple for variants)
ISet <string> typeNames = new LinkedHashSet <string>();
if (ctx.variantList() != null)
{
IList <EsperEPL2GrammarParser.VariantListElementContext> variantCtxs = ctx.variantList().variantListElement();
foreach (var variantCtx in variantCtxs)
{
typeNames.Add(variantCtx.GetText().UnmaskTypeName());
}
}
// get inherited and start timestamp and end timestamps
string startTimestamp = null;
string endTimestamp = null;
ISet <string> inherited = new LinkedHashSet <string>();
ISet <string> copyFrom = new LinkedHashSet <string>();
if (ctx.createSchemaQual() != null)
{
IList <EsperEPL2GrammarParser.CreateSchemaQualContext> qualCtxs = ctx.createSchemaQual();
foreach (var qualCtx in qualCtxs)
{
var qualName = qualCtx.i.Text.ToLower();
var cols = ASTUtil.GetIdentList(qualCtx.columnList());
var qualNameLower = qualName.ToLower();
switch (qualNameLower)
{
case "inherits":
inherited.AddAll(cols);
continue;
case "starttimestamp":
startTimestamp = cols[0];
continue;
case "endtimestamp":
endTimestamp = cols[0];
continue;
case "copyfrom":
copyFrom.AddAll(cols);
continue;
}
throw new EPException("Expected 'inherits', 'starttimestamp', 'endtimestamp' or 'copyfrom' keyword after create-schema clause but encountered '" + qualName + "'");
}
}
return(new CreateSchemaDesc(schemaName, typeNames, columnTypes, inherited, assignedType, startTimestamp, endTimestamp, copyFrom));
}
public void TestGetPropertyNameEscaped()
{
String PROPERTY = "a\\.b\\.c";
Pair <ITree, CommonTokenStream> parsed = SupportParserHelper.ParseEventProperty(PROPERTY);
ITree propertyNameExprNode = parsed.First.GetChild(0);
ASTUtil.DumpAST(propertyNameExprNode);
String propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
}
private Object ParseLoadJson(String expression)
{
Pair <ITree, CommonTokenStream> parsed = ParseJson(expression);
EsperEPL2GrammarParser.StartJsonValueRuleContext tree = (EsperEPL2GrammarParser.StartJsonValueRuleContext)parsed.First;
Assert.AreEqual(EsperEPL2GrammarParser.RULE_startJsonValueRule, ASTUtil.GetRuleIndexIfProvided(tree));
ITree root = tree.GetChild(0);
ASTUtil.DumpAST(root);
return(ASTJsonHelper.Walk(parsed.Second, tree.jsonvalue()));
}
/// <summary>
/// Parse the AST constant node and return Object value.
/// </summary>
/// <param name="node">parse node for which to parse the string value</param>
/// <returns>value matching AST node type</returns>
public static Object Parse(IParseTree node)
{
if (node is ITerminalNode)
{
var terminal = (ITerminalNode)node;
switch (terminal.Symbol.Type)
{
case EsperEPL2GrammarParser.BOOLEAN_TRUE: return(BoolValue.ParseString(terminal.GetText()));
case EsperEPL2GrammarParser.BOOLEAN_FALSE: return(BoolValue.ParseString(terminal.GetText()));
case EsperEPL2GrammarParser.VALUE_NULL: return(null);
default:
throw ASTWalkException.From("Encountered unexpected constant type " + terminal.Symbol.Type, terminal.Symbol);
}
}
else
{
var ruleNode = (IRuleNode)node;
var ruleIndex = ruleNode.RuleContext.RuleIndex;
if (ruleIndex == EsperEPL2GrammarParser.RULE_number)
{
return(ParseNumber(ruleNode, 1));
}
else if (ruleIndex == EsperEPL2GrammarParser.RULE_numberconstant)
{
var number = FindChildRuleByType(ruleNode, EsperEPL2GrammarParser.RULE_number);
if (ruleNode.ChildCount > 1)
{
if (ASTUtil.IsTerminatedOfType(ruleNode.GetChild(0), EsperEPL2GrammarLexer.MINUS))
{
return(ParseNumber(number, -1));
}
return(ParseNumber(number, 1));
}
else
{
return(ParseNumber(number, 1));
}
}
else if (ruleIndex == EsperEPL2GrammarParser.RULE_stringconstant)
{
bool requireUnescape = !IsRegexpNode(node);
return(StringValue.ParseString(node.GetText(), requireUnescape));
}
else if (ruleIndex == EsperEPL2GrammarParser.RULE_constant)
{
return(Parse(ruleNode.GetChild(0)));
}
throw ASTWalkException.From("Encountered unrecognized constant", node.GetText());
}
}
internal static IList <string> GetLambdaGoesParams(EsperEPL2GrammarParser.ExpressionLambdaDeclContext ctx)
{
IList <string> parameters;
if (ctx.i != null)
{
parameters = new List <string>(1);
parameters.Add(ctx.i.Text);
}
else
{
parameters = ASTUtil.GetIdentList(ctx.columnList());
}
return(parameters);
}
private static String[] ParseParamsStreamNames(EsperEPL2GrammarParser.GopParamsItemContext item)
{
IList <String> paramNames = new List <String>(1);
if (item.gopParamsItemMany() != null)
{
foreach (var ctx in item.gopParamsItemMany().classIdentifier())
{
paramNames.Add(ctx.GetText());
}
}
else
{
paramNames.Add(ASTUtil.UnescapeClassIdent(item.classIdentifier()));
}
return(paramNames.ToArray());
}
public static void ExprCollectAddSingle(ExprNode parentNode, ITree node, IDictionary <ITree, ExprNode> astExprNodeMap)
{
if (parentNode == null)
{
throw ASTWalkException.From("Invalid null expression node for '" + ASTUtil.PrintNode(node) + "'");
}
if (node == null)
{
return;
}
ExprAction action = (exprNodeX, astExprNodeMapX, nodeX) => {
astExprNodeMapX.Remove(nodeX);
parentNode.AddChildNode(exprNodeX);
};
RecursiveFindRemoveChildExprNode(node, astExprNodeMap, action);
}
public static void RegExCollectAddSubNodes(RowRegexExprNode regexNode, ITree node, IDictionary <ITree, RowRegexExprNode> astRegExNodeMap)
{
if (regexNode == null)
{
throw ASTWalkException.From("Invalid null expression node for '" + ASTUtil.PrintNode(node) + "'");
}
RegExAction action = (exprNode, astRegExNodeMapX, nodeX) => {
astRegExNodeMapX.Remove(nodeX);
regexNode.AddChildNode(exprNode);
};
for (var i = 0; i < node.ChildCount; i++)
{
var childNode = node.GetChild(i);
RegExApplyActionRecursive(childNode, astRegExNodeMap, action);
}
}
public static void PatternCollectAddSubnodesAddParentNode(EvalFactoryNode evalNode, ITree node, IDictionary <ITree, EvalFactoryNode> astPatternNodeMap)
{
if (evalNode == null)
{
throw ASTWalkException.From("Invalid null expression node for '" + ASTUtil.PrintNode(node) + "'");
}
for (var i = 0; i < node.ChildCount; i++)
{
var childNode = node.GetChild(i);
var childEvalNode = PatternGetRemoveTopNode(childNode, astPatternNodeMap);
if (childEvalNode != null)
{
evalNode.AddChildNode(childEvalNode);
}
}
astPatternNodeMap.Put(node, evalNode);
}
/// <summary>
/// Walk an annotation root name or child node (nested annotations).
/// </summary>
/// <param name="ctx">annotation walk node</param>
/// <param name="engineImportService">for engine imports</param>
/// <returns>annotation descriptor</returns>
/// <throws>ASTWalkException if the walk failed</throws>
public static AnnotationDesc Walk(EsperEPL2GrammarParser.AnnotationEnumContext ctx, EngineImportService engineImportService)
{
var name = ASTUtil.UnescapeClassIdent(ctx.classIdentifier());
IList <Pair <String, Object> > values = new List <Pair <String, Object> >();
if (ctx.elementValueEnum() != null)
{
var value = WalkValue(ctx.elementValueEnum(), engineImportService);
values.Add(new Pair <String, Object>("Value", value));
}
else if (ctx.elementValuePairsEnum() != null)
{
WalkValuePairs(ctx.elementValuePairsEnum(), values, engineImportService);
}
return(new AnnotationDesc(name, values));
}
public static Pair <ExprTableAccessNode, IList <ExprChainedSpec> > CheckTableNameGetLibFunc(
TableService tableService,
EngineImportService engineImportService,
LazyAllocatedMap <ConfigurationPlugInAggregationMultiFunction, PlugInAggregationMultiFunctionFactory> plugInAggregations,
string engineURI,
string classIdent,
IList <ExprChainedSpec> chain)
{
var index = ASTUtil.UnescapedIndexOfDot(classIdent);
// handle special case "table.Keys()" function
if (index == -1)
{
if (tableService.GetTableMetadata(classIdent) == null)
{
return(null); // not a table
}
var funcName = chain[1].Name;
if (funcName.ToLowerInvariant().Equals("keys"))
{
var subchain = chain.SubList(2, chain.Count);
var node = new ExprTableAccessNodeKeys(classIdent);
return(new Pair <ExprTableAccessNode, IList <ExprChainedSpec> >(node, subchain));
}
else
{
throw ASTWalkException.From(
"Invalid use of variable '" + classIdent + "', unrecognized use of function '" + funcName +
"', expected 'keys()'");
}
}
// Handle "table.property" (without the variable[...] syntax since this is ungrouped use)
var tableName = ASTUtil.UnescapeDot(classIdent.Substring(0, index));
if (tableService.GetTableMetadata(tableName) == null)
{
return(null);
}
// this is a table access expression
var sub = classIdent.Substring(index + 1);
return(HandleTable(engineImportService, plugInAggregations, engineURI, tableName, sub, chain));
}
public void TestGetPropertyName()
{
String PROPERTY = "a('aa').b[1].c";
// Should parse and result in the exact same property name
Pair <ITree, CommonTokenStream> parsed = SupportParserHelper.ParseEventProperty(PROPERTY);
ITree propertyNameExprNode = parsed.First.GetChild(0);
ASTUtil.DumpAST(propertyNameExprNode);
String propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
// Try AST with tokens separated, same property name
parsed = SupportParserHelper.ParseEventProperty("a( 'aa' ). b [ 1 ] . c");
propertyNameExprNode = parsed.First.GetChild(0);
propertyName = ((IRuleNode)propertyNameExprNode).GetText();
Assert.AreEqual(PROPERTY, propertyName);
}
public static void ExprCollectAddSubNodes(ExprNode parentNode, ITree node, IDictionary <ITree, ExprNode> astExprNodeMap)
{
if (parentNode == null)
{
throw ASTWalkException.From("Invalid null expression node for '" + ASTUtil.PrintNode(node) + "'");
}
if (node == null)
{
return;
}
ExprAction action = (exprNode, astExprNodeMapX, nodeX) => {
astExprNodeMapX.Remove(nodeX);
parentNode.AddChildNode(exprNode);
};
for (var i = 0; i < node.ChildCount; i++)
{
var childNode = node.GetChild(i);
RecursiveFindRemoveChildExprNode(childNode, astExprNodeMap, action);
}
}
private static GraphOperatorOutputItemType ParseType(EsperEPL2GrammarParser.GopOutTypeParamContext ctx)
{
if (ctx.q != null)
{
return(new GraphOperatorOutputItemType(true, null, null));
}
var className = ASTUtil.UnescapeClassIdent(ctx.gopOutTypeItem().classIdentifier());
IList <GraphOperatorOutputItemType> typeParams = new List <GraphOperatorOutputItemType>();
if (ctx.gopOutTypeItem().gopOutTypeList() != null)
{
IList <EsperEPL2GrammarParser.GopOutTypeParamContext> pctxs = ctx.gopOutTypeItem().gopOutTypeList().gopOutTypeParam();
foreach (var pctx in pctxs)
{
var type = ParseType(pctx);
typeParams.Add(type);
}
}
return(new GraphOperatorOutputItemType(false, className, typeParams));
}
private static CreateTableColumn GetColumn(EsperEPL2GrammarParser.CreateTableColumnContext ctx, IDictionary <ITree, ExprNode> astExprNodeMap, EngineImportService engineImportService)
{
string columnName = ctx.n.Text;
ExprNode optExpression = null;
if (ctx.builtinFunc() != null || ctx.libFunction() != null)
{
optExpression = ASTExprHelper.ExprCollectSubNodes(ctx, 0, astExprNodeMap)[0];
}
string optTypeName = null;
bool? optTypeIsArray = null;
bool? optTypeIsPrimitiveArray = null;
if (ctx.createTableColumnPlain() != null)
{
EsperEPL2GrammarParser.CreateTableColumnPlainContext sub = ctx.createTableColumnPlain();
optTypeName = ASTUtil.UnescapeClassIdent(sub.classIdentifier());
optTypeIsArray = sub.b != null;
optTypeIsPrimitiveArray = ASTCreateSchemaHelper.ValidateIsPrimitiveArray(sub.p);
}
bool primaryKey = false;
if (ctx.p != null)
{
if (ctx.p.Text.ToLower() != "primary")
{
throw ASTWalkException.From("Invalid keyword '" + ctx.p.Text + "' encountered, expected 'primary key'");
}
if (ctx.k.Text.ToLower() != "key")
{
throw ASTWalkException.From("Invalid keyword '" + ctx.k.Text + "' encountered, expected 'primary key'");
}
primaryKey = true;
}
IList <AnnotationDesc> annots = Collections.GetEmptyList <AnnotationDesc>();
if (ctx.annotationEnum() != null)
{
annots = new List <AnnotationDesc>(ctx.annotationEnum().Length);
foreach (EsperEPL2GrammarParser.AnnotationEnumContext anctx in ctx.annotationEnum())
{
annots.Add(ASTAnnotationHelper.Walk(anctx, engineImportService));
}
}
if (ctx.propertyExpressionAnnotation() != null)
{
if (annots.IsEmpty())
{
annots = new List <AnnotationDesc>();
}
foreach (EsperEPL2GrammarParser.PropertyExpressionAnnotationContext anno in ctx.propertyExpressionAnnotation())
{
annots.Add(new AnnotationDesc(anno.n.Text, anno.v.Text));
}
}
return(new CreateTableColumn(columnName, optExpression, optTypeName, optTypeIsArray, optTypeIsPrimitiveArray, annots, primaryKey));
}
private static ContextDetail WalkChoice(EsperEPL2GrammarParser.CreateContextChoiceContext ctx, IDictionary <ITree, ExprNode> astExprNodeMap, IDictionary <ITree, EvalFactoryNode> astPatternNodeMap, PropertyEvalSpec propertyEvalSpec, FilterSpecRaw filterSpec)
{
// temporal fixed (start+end) and overlapping (initiated/terminated)
if (ctx.START() != null || ctx.INITIATED() != null)
{
ExprNode[] distinctExpressions = null;
if (ctx.createContextDistinct() != null)
{
if (ctx.createContextDistinct().expressionList() == null)
{
distinctExpressions = new ExprNode[0];
}
else
{
distinctExpressions = ASTExprHelper.ExprCollectSubNodesPerNode(ctx.createContextDistinct().expressionList().expression(), astExprNodeMap);
}
}
ContextDetailCondition startEndpoint;
if (ctx.START() != null)
{
bool immediate = CheckNow(ctx.i);
if (immediate)
{
startEndpoint = new ContextDetailConditionImmediate();
}
else
{
startEndpoint = GetContextCondition(ctx.r1, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, false);
}
}
else
{
bool immediate = CheckNow(ctx.i);
startEndpoint = GetContextCondition(ctx.r1, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, immediate);
}
bool overlapping = ctx.INITIATED() != null;
ContextDetailCondition endEndpoint = GetContextCondition(ctx.r2, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, false);
return(new ContextDetailInitiatedTerminated(startEndpoint, endEndpoint, overlapping, distinctExpressions));
}
// partitioned
if (ctx.PARTITION() != null)
{
IList <EsperEPL2GrammarParser.CreateContextPartitionItemContext> partitions = ctx.createContextPartitionItem();
IList <ContextDetailPartitionItem> rawSpecs = new List <ContextDetailPartitionItem>();
foreach (EsperEPL2GrammarParser.CreateContextPartitionItemContext partition in partitions)
{
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(partition.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
propertyEvalSpec = null;
IList <String> propertyNames = new List <String>();
IList <EsperEPL2GrammarParser.EventPropertyContext> properties = partition.eventProperty();
foreach (EsperEPL2GrammarParser.EventPropertyContext property in properties)
{
String propertyName = ASTUtil.GetPropertyName(property, 0);
propertyNames.Add(propertyName);
}
ASTExprHelper.ExprCollectSubNodes(partition, 0, astExprNodeMap); // remove expressions
rawSpecs.Add(new ContextDetailPartitionItem(filterSpec, propertyNames));
}
return(new ContextDetailPartitioned(rawSpecs));
}
// hash
else if (ctx.COALESCE() != null)
{
IList <EsperEPL2GrammarParser.CreateContextCoalesceItemContext> coalesces = ctx.createContextCoalesceItem();
IList <ContextDetailHashItem> rawSpecs = new List <ContextDetailHashItem>(coalesces.Count);
foreach (EsperEPL2GrammarParser.CreateContextCoalesceItemContext coalesce in coalesces)
{
ExprChainedSpec func = ASTLibFunctionHelper.GetLibFunctionChainSpec(coalesce.libFunctionNoClass(), astExprNodeMap);
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(coalesce.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
propertyEvalSpec = null;
rawSpecs.Add(new ContextDetailHashItem(func, filterSpec));
}
String granularity = ctx.g.Text;
if (!granularity.ToLower().Equals("granularity"))
{
throw ASTWalkException.From("Expected 'granularity' keyword after list of coalesce items, found '" + granularity + "' instead");
}
var num = ASTConstantHelper.Parse(ctx.number());
String preallocateStr = ctx.p != null ? ctx.p.Text : null;
if (preallocateStr != null && !preallocateStr.ToLower().Equals("preallocate"))
{
throw ASTWalkException.From("Expected 'preallocate' keyword after list of coalesce items, found '" + preallocateStr + "' instead");
}
if (!num.GetType().IsNumericNonFP() || num.GetType().GetBoxedType() == typeof(long?))
{
throw ASTWalkException.From("Granularity provided must be an int-type number, received " + num.GetType() + " instead");
}
return(new ContextDetailHash(rawSpecs, num.AsInt(), preallocateStr != null));
}
// categorized
if (ctx.createContextGroupItem() != null)
{
IList <EsperEPL2GrammarParser.CreateContextGroupItemContext> grps = ctx.createContextGroupItem();
IList <ContextDetailCategoryItem> items = new List <ContextDetailCategoryItem>();
foreach (EsperEPL2GrammarParser.CreateContextGroupItemContext grp in grps)
{
ExprNode exprNode = ASTExprHelper.ExprCollectSubNodes(grp, 0, astExprNodeMap)[0];
String name = grp.i.Text;
items.Add(new ContextDetailCategoryItem(exprNode, name));
}
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(ctx.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
return(new ContextDetailCategory(items, filterSpec));
}
throw new IllegalStateException("Unrecognized context detail type");
}
public static Pair <ExpressionDeclItem, ExpressionScriptProvided> WalkExpressionDecl(
EsperEPL2GrammarParser.ExpressionDeclContext ctx,
IList <String> scriptBodies,
IDictionary <ITree, ExprNode> astExprNodeMap,
CommonTokenStream tokenStream)
{
var name = ctx.name.Text;
if (ctx.alias != null)
{
if (ctx.alias.Text.ToLower().Trim() != "alias")
{
throw ASTWalkException.From("For expression alias '" + name + "' expecting 'alias' keyword but received '" + ctx.alias.Text + "'");
}
if (ctx.columnList() != null)
{
throw ASTWalkException.From("For expression alias '" + name + "' expecting no parameters but received '" + tokenStream.GetText(ctx.columnList()) + "'");
}
if (ctx.expressionDef() != null && ctx.expressionDef().expressionLambdaDecl() != null)
{
throw ASTWalkException.From("For expression alias '" + name + "' expecting an expression without parameters but received '" + tokenStream.GetText(ctx.expressionDef().expressionLambdaDecl()) + "'");
}
if (ctx.expressionDef().stringconstant() != null)
{
throw ASTWalkException.From("For expression alias '" + name + "' expecting an expression but received a script");
}
var exprNode = ASTExprHelper.ExprCollectSubNodes(ctx, 0, astExprNodeMap)[0];
var alias = ctx.name.Text;
var decl = new ExpressionDeclItem(alias, Collections.GetEmptyList <String>(), exprNode, true);
return(new Pair <ExpressionDeclItem, ExpressionScriptProvided>(decl, null));
}
if (ctx.expressionDef().stringconstant() != null)
{
var expressionText = scriptBodies[0];
scriptBodies.RemoveAt(0);
var parameters = ASTUtil.GetIdentList(ctx.columnList());
var optionalReturnType = ctx.classIdentifier() == null
? null
: ASTUtil.UnescapeClassIdent(ctx.classIdentifier());
var optionalReturnTypeArray = ctx.array != null;
var optionalDialect = ctx.expressionDialect() == null ? null : ctx.expressionDialect().d.Text;
var script = new ExpressionScriptProvided(
name, expressionText, parameters,
optionalReturnType, optionalReturnTypeArray, optionalDialect);
return(new Pair <ExpressionDeclItem, ExpressionScriptProvided>(null, script));
}
var ctxexpr = ctx.expressionDef();
var inner = ASTExprHelper.ExprCollectSubNodes(ctxexpr.expression(), 0, astExprNodeMap)[0];
var parametersNames = Collections.GetEmptyList <string>();
var lambdactx = ctxexpr.expressionLambdaDecl();
if (ctxexpr.expressionLambdaDecl() != null)
{
parametersNames = ASTLibFunctionHelper.GetLambdaGoesParams(lambdactx);
}
var expr = new ExpressionDeclItem(name, parametersNames, inner, false);
return(new Pair <ExpressionDeclItem, ExpressionScriptProvided>(expr, null));
}
private static ASTLibModel GetModel(EsperEPL2GrammarParser.LibFunctionContext ctx, CommonTokenStream tokenStream)
{
var root = ctx.libFunctionWithClass();
IList <EsperEPL2GrammarParser.LibFunctionNoClassContext> ctxElements = ctx.libFunctionNoClass();
// there are no additional methods
if (ctxElements == null || ctxElements.IsEmpty())
{
var classIdent = root.classIdentifier() == null ? null : ASTUtil.UnescapeClassIdent(root.classIdentifier());
var ele = FromRoot(root);
return(new ASTLibModel(classIdent, Collections.SingletonList(ele)));
}
// add root and chain to just a list of elements
IList <ASTLibModelChainElement> chainElements = new List <ASTLibModelChainElement>(ctxElements.Count + 1);
var rootElement = FromRoot(root);
chainElements.Add(rootElement);
foreach (var chainedCtx in ctxElements)
{
var chainedElement = new ASTLibModelChainElement(chainedCtx.funcIdentChained().GetText(), chainedCtx.libFunctionArgs(), chainedCtx.l != null);
chainElements.Add(chainedElement);
}
// determine/remove the list of chain elements, from the start and uninterrupted, that don't have parameters (no parenthesis 'l')
IList <ASTLibModelChainElement> chainElementsNoArgs = new List <ASTLibModelChainElement>(chainElements.Count);
for (int ii = 0; ii < chainElements.Count; ii++)
{
var element = chainElements[ii];
if (!element.HasLeftParen)
{
// has no parenthesis, therefore part of class identifier
chainElementsNoArgs.Add(element);
chainElements.RemoveAt(ii--);
}
else
{
// else stop here
break;
}
}
// write the class identifier including the no-arg chain elements
var classIdentBuf = new StringBuilder();
var delimiter = "";
if (root.classIdentifier() != null)
{
classIdentBuf.Append(ASTUtil.UnescapeClassIdent(root.classIdentifier()));
delimiter = ".";
}
foreach (var noarg in chainElementsNoArgs)
{
classIdentBuf.Append(delimiter);
classIdentBuf.Append(noarg.FuncName);
delimiter = ".";
}
if (chainElements.IsEmpty())
{
// would this be an event property, but then that is handled greedily by parser
throw ASTWalkException.From("Encountered unrecognized lib function call", tokenStream, ctx);
}
// class ident can be null if empty
var classIdentifierString = classIdentBuf.ToString();
var classIdentifier = classIdentifierString.Length > 0 ? classIdentifierString : null;
return(new ASTLibModel(classIdentifier, chainElements));
}
public static ExprTimePeriod TimePeriodGetExprAllParams(EsperEPL2GrammarParser.TimePeriodContext ctx, IDictionary <ITree, ExprNode> astExprNodeMap, VariableService variableService, StatementSpecRaw spec, ConfigurationInformation config)
{
var nodes = new ExprNode[8];
for (var i = 0; i < ctx.ChildCount; i++)
{
var unitRoot = ctx.GetChild(i);
ExprNode valueExpr;
if (ASTUtil.IsTerminatedOfType(unitRoot.GetChild(0), EsperEPL2GrammarLexer.IDENT))
{
var ident = unitRoot.GetChild(0).GetText();
valueExpr = ASTExprHelper.ResolvePropertyOrVariableIdentifier(ident, variableService, spec);
}
else
{
var @ref = new Atomic <ExprNode>();
ExprAction action = (exprNode, astExprNodeMapX, nodeX) => {
astExprNodeMapX.Remove(nodeX);
@ref.Set(exprNode);
};
ASTExprHelper.RecursiveFindRemoveChildExprNode(unitRoot.GetChild(0), astExprNodeMap, action);
valueExpr = @ref.Get();
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_millisecondPart)
{
nodes[7] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_secondPart)
{
nodes[6] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_minutePart)
{
nodes[5] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_hourPart)
{
nodes[4] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_dayPart)
{
nodes[3] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_weekPart)
{
nodes[2] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_monthPart)
{
nodes[1] = valueExpr;
}
if (ASTUtil.GetRuleIndexIfProvided(unitRoot) == EsperEPL2GrammarParser.RULE_yearPart)
{
nodes[0] = valueExpr;
}
}
ExprTimePeriod timeNode = new ExprTimePeriodImpl(config.EngineDefaults.ExpressionConfig.TimeZone,
nodes[0] != null, nodes[1] != null, nodes[2] != null, nodes[3] != null, nodes[4] != null, nodes[5] != null, nodes[6] != null, nodes[7] != null);
if (nodes[0] != null)
{
timeNode.AddChildNode(nodes[0]);
}
if (nodes[1] != null)
{
timeNode.AddChildNode(nodes[1]);
}
if (nodes[2] != null)
{
timeNode.AddChildNode(nodes[2]);
}
if (nodes[3] != null)
{
timeNode.AddChildNode(nodes[3]);
}
if (nodes[4] != null)
{
timeNode.AddChildNode(nodes[4]);
}
if (nodes[5] != null)
{
timeNode.AddChildNode(nodes[5]);
}
if (nodes[6] != null)
{
timeNode.AddChildNode(nodes[6]);
}
if (nodes[7] != null)
{
timeNode.AddChildNode(nodes[7]);
}
return(timeNode);
}
/// <summary>
/// Parse expression using the rule the ParseRuleSelector instance supplies.
/// </summary>
/// <param name="expression">text to parse</param>
/// <param name="eplStatementErrorMsg">text for error</param>
/// <param name="addPleaseCheck">true to include depth paraphrase</param>
/// <param name="parseRuleSelector">parse rule to select</param>
/// <param name="rewriteScript">if set to <c>true</c> [rewrite script].</param>
/// <returns>
/// AST - syntax tree
/// </returns>
/// <exception cref="EPException">IOException parsing expression ' + expression + '\''</exception>
/// <throws>EPException when the AST could not be parsed</throws>
public static ParseResult Parse(String expression, String eplStatementErrorMsg, bool addPleaseCheck, ParseRuleSelector parseRuleSelector, bool rewriteScript)
{
if (Log.IsDebugEnabled)
{
Log.Debug(".parse Parsing expr=" + expression);
}
ICharStream input;
try
{
input = new NoCaseSensitiveStream(expression);
}
catch (IOException ex)
{
throw new EPException("IOException parsing expression '" + expression + '\'', ex);
}
var lex = NewLexer(input);
var tokens = new CommonTokenStream(lex);
var parser = ParseHelper.NewParser(tokens);
ITree tree;
try
{
tree = parseRuleSelector.Invoke(parser);
}
catch (RecognitionException ex)
{
tokens.Fill();
if (rewriteScript && IsContainsScriptExpression(tokens))
{
return(HandleScriptRewrite(tokens, eplStatementErrorMsg, addPleaseCheck, parseRuleSelector));
}
Log.Debug("Error parsing statement [" + expression + "]", ex);
throw ExceptionConvertor.ConvertStatement(ex, eplStatementErrorMsg, addPleaseCheck, parser);
}
catch (Exception e)
{
try
{
tokens.Fill();
}
catch (Exception ex)
{
Log.Debug("Token-fill produced exception: " + ex.Message, ex);
}
if (Log.IsDebugEnabled)
{
Log.Debug("Error parsing statement [" + eplStatementErrorMsg + "]", e);
}
if (e.InnerException is RecognitionException)
{
if (rewriteScript && IsContainsScriptExpression(tokens))
{
return(HandleScriptRewrite(tokens, eplStatementErrorMsg, addPleaseCheck, parseRuleSelector));
}
throw ExceptionConvertor.ConvertStatement((RecognitionException)e.InnerException, eplStatementErrorMsg, addPleaseCheck, parser);
}
else
{
throw;
}
}
// if we are re-writing scripts and contain a script, then rewrite
if (rewriteScript && IsContainsScriptExpression(tokens))
{
return(HandleScriptRewrite(tokens, eplStatementErrorMsg, addPleaseCheck, parseRuleSelector));
}
if (Log.IsDebugEnabled)
{
Log.Debug(".parse Dumping AST...");
ASTUtil.DumpAST(tree);
}
var expressionWithoutAnnotation = expression;
if (tree is EsperEPL2GrammarParser.StartEPLExpressionRuleContext)
{
var epl = (EsperEPL2GrammarParser.StartEPLExpressionRuleContext)tree;
expressionWithoutAnnotation = GetNoAnnotation(expression, epl.annotationEnum(), tokens);
}
else if (tree is EsperEPL2GrammarParser.StartPatternExpressionRuleContext)
{
var pattern = (EsperEPL2GrammarParser.StartPatternExpressionRuleContext)tree;
expressionWithoutAnnotation = GetNoAnnotation(expression, pattern.annotationEnum(), tokens);
}
return(new ParseResult(tree, expressionWithoutAnnotation, tokens, Collections.GetEmptyList <String>()));
}
