dsl

I saw this nice blog post about a Scala continuations that 'emulates' a GOTO statement in the Scala language. (read more about Continuations here ) I would like to have the same in the programming language Groovy. I think it's possible within a Groovy compiler phase transformation . I'm working on an Domain-Specific Language (DSL), and preferred embedded in Groovy. I would like to have the GOTO statement, because the DSL is an unstructured language (and is generated from workflow diagrams). I need a 'labeled' goto statement, not to line numbers. The DSL is a language for workflow definitions,

I've a DSL written using Xtext. What I want is to execute that DSL to perform something good out of it. I wrote myDslGenerator class implementing the interface IGenerator in xtend to generate java code and it's working fine. I've two questions; What is the difference between Interpreter and Code Generator? Aren't both for executing DSL? How to write an interpreter? Any step by step tutorial link? I found many tutorial to generate code using xtend but couldn't find any for writing an interpreter. Thank you, Salman Basically, interpreters and code generators work really differently. Code

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . I've forked this question from a similar question I made in a comment I made to one of the many great answers I recieved. I was originally asking about AST macros, which mostly provoked very detailed and thoughtful responses from Lispers. Thanks. Lazy Evaluation vs Macros The question I made in a comment was whether project-specific DSLs are actually a good idea. Of course, this is completely

I'm looking for a tool that understands a DSL in which I can define my statechart that generates Java code or where the statechart in the DSL is runnable as is. The tool would ideally be written in Java and must support superstates and orthogonal regions by definition of Harel Statecharts (or equivalently UML 2 State Machines). Alternatively, what would be the best library or tool to write such a DSL with? ahcox Yakindu looks good: http://www.statecharts.org Harel Statecharts Visual Language Textual DSL Generates Java Generates C Generates C++ Generation configurable / customisable Eclipse

I have a set of requirements and I'm looking for the best Java-based strategy / algorthm / software to use. Basically, I want to take a set of recipe ingredients entered by real people in natural english and parse out the meta-data into a structured format (see requirements below to see what I'm trying to do). I've looked around here and other places, but have found nothing that gives a high-level advice on what direction follow. So, I'll put it to the smart people :-): What's the best / simplest way to solve this problem? Should I use a natural language parser, dsl, lucene/solr, or some other

my query is like this: { "query": { "filtered": { "filter": { "bool": { "must": [ { "term": { "online": 1 } }, { "terms": { "mediaType": "flash" } } ] } } } } } it raise a QueryParsingException [[comos_v2] [terms] filter does not support [mediaType]] ,of which the field "mediaType" exactly does not exist in mapping. my question is why term filter does not raise the Exception? The above is not a valid Query DSL. In the above Terms filter the values to "mediaType" field should be an array It should be the following : { "query": { "filtered": { "filter": { "bool": { "must": [ { "term": { "online"