antlr

问题 I have this in .classpath: <?xml version="1.0" encoding="UTF-8"?> <classpath> <classpathentry kind="src" path="src"/> ... ... <classpathentry kind="lib" path="lib/hibernate3.jar"/> <classpathentry kind="lib" path="lib/antlr-2.7.6.jar"/> ... </classpath> Some .jar added. When I try this: Query query2 = session.createQuery(sql2); throw exception in question name: java.lang.ClassNotFoundException: antlr.ANTLRException Any idea? Thanks in advance. Greetings. 回答1: This is related to the Hibernate

问题 Im trying to skip/ignore the text outside a custom tag: This text is a unique token to skip < ?compo \5+5\ ?> also this < ?compo \1+1\ ?> I tried with the follow lexer: TAG_OPEN : '<?compo ' -> pushMode(COMPOSER); mode COMPOSER; TAG_CLOSE : ' ?>' -> popMode; NUMBER_DIGIT : '1'..'9'; ZERO : '0'; LOGICOP : OR | AND ; COMPAREOP : EQ | NE | GT | GE | LT | LE ; WS : ' '; NEWLINE : ('\r\n'|'\n'|'\r'); TAB : ('\t'); ... and parser: instructions : (TAG_OPEN statement TAG_CLOSE)+?; statement : if

问题 I'm trying to start with ANTLR . When I import module antlr it's working just fine , but if I try to import MyGrammarLexer and MyGrammarParser , it's shows that MyGrammarLexer and Parser aren't in lib. I Using PyCharm , I installed ANTLR with : pip3 install antlr4-python3-runtime my code is : import sys from antlr4 import * import MyGrammarLexer import MyGrammarParser def main(argv): input = FileStream(argv[1]) lexer = MyGrammarLexer(input) stream = CommonTokenStream(lexer) parser =

问题 I need to parse a boolean search string of keywords and operators into a SQL query to be executed from C# code. I think something like ANTLR is what I need for this task, but I'm not sure how to do it. Are there any good tutorials on how to do this? Or maybe I need a different tool? An example of what I mean is below. The only operators I need are AND and OR. I would also like to be able to use parenthesis. input expression: (blue AND green) OR yellow output: SELECT * FROM table WHERE

问题 I am trying to parse CSP(Communicating Sequential Processes) CSP Reference Manual. I have defined following grammar rules. assignment : IDENT '=' processExpression ; processExpression : ( STOP | SKIP | chaos | prefix | prefixWithValue | seqComposition | interleaving | externalChoice .... seqComposition : processExpression ';' processExpression ; interleaving : processExpression '|||' processExpression ; externalChoice : processExpression '[]' processExpression ; Now ANTLR reports that

问题 According to the antlr4 book (page 159), and using the grammar Ambig.g4, grammar ambiguity can be reported by: grun Ambig stat -diagnostics or equivalently, in code form: parser.removeErrorListeners(); parser.addErrorListener(new DiagnosticErrorListener()); parser.getInterpreter().setPredictionMode(PredictionMode.LL_EXACT_AMBIG_DETECTION); The grun command reports the ambiguity properly for me, using antlr-4.5.3 . But when I use the code form, I dont get the ambiguity report. Here is the

问题 That's it. I have correct grammar file (or I can just take example from ANTLR site) and after code generation I get this in my Visual Studio 2010. Runtime is already in references: - antlr.runtime.dll - Antlr3.Runtime.dll - Antlr3.Utility - StringTemplate Any workaround or, maybe, ideads? ANTLR 3.4 (language = CSharp2) C# 4.0 来源： https://stackoverflow.com/questions/11412684/antlr-3-4-c-sharp-the-type-or-namespace-name-grammarrule-could-not-be-found

问题 I'm attempting to create a boolean expression language/grammar for a personal project. The user will be able to write a string in a Java-like syntax, with provision for variables, which will be evaluated at a later time when the variables have been initialised. Rain For example, a user might enter the string @FOO+7 > 4*(5+@BAR); Later, when the variable FOO is initialised and equal to 6, and BAR is equal to 1, the expression evaluates to 13>24 and thus returns false. I'm using ANTLRworks to

问题 I apologize in advance about asking a so similar question, but i'm rather frustrated, and i will probably be able to explain better on a new question. I'm trying to rewrite parts of a structured file, and thought of using antlr. These files are lines of {X} tokens. There is a character i'm looking ahead for, so that i can rewrite parts of the file different if i find it. But this character ( '#' ), can occur in many parts of the file. However, if it appears on 4th {#} it determines if i need

问题 I am trying to write a grammar for our custom rule engine which uses ANTLR (for parsing) and Pentaho Kettle (for executing the rules) Valid inputs for the parser would be of the type: (<Attribute_name> <Relational_Operator> <Value>) AND/OR (<Attribute_name> <Relational_Operator> <Value>) i.e. PERSON_PHONE = 123456789 Here is my grammar: grammar RuleGrammar; options{ language=Java; } prog : condition; condition : LHSOPERAND RELATIONOPERATOR RHSOPERAND ; LHSOPERAND : STRINGVALUE ; RHSOPERAND :