Hy guys, i'm working on a IDEA plugin and custom references. I have many references working, but i'm stuck with a difficult one.
I'd like to detect patterns in groovy such as this one :
result = run service: 'createAgreementItem', with: createAgreementItemInMap
In the above line, i'd like to get the createAgreementItem element to match.
run is defined in a groovy base script
package org.apache.ofbiz.service.engine
abstract class GroovyBaseScript extends Script {
//...
Map run(Map args) throws ExecutionServiceException {
return runService((String)args.get('service'), (Map)args.get('with', new HashMap()))
}
//...
The problem is, what i'm trying to get isn't technically a parameter, it's a value from a map with the key equals to service.
So this won't work :
GroovyPatterns.groovyLiteralExpression()
.methodCallParameter(0,
GroovyPatterns.psiMethod().withName("run")
.definedInClass("org.apache.ofbiz.service.engine.GroovyBaseScript"))
Do you have any ideas or any help ? Thanks in advance !
EDIT :
Actually, i'm looking for a doc or an example for any use of the org.jetbrains.plugins.groovy.lang.psi.patterns.GroovyPatterns
library.
I don't get it, maybe i'm not familiar enough with groovy though i used it a bit.
Any help welcome on this.
The problem is, what i'm trying to get isn't technically a parameter,
it's a value from a map with the key equals to "service"
If all you want to do is retrieve the service value from the Map then instead of args.get('with', new HashMap()) you could do args.with.service. If you wanted null safety, you could do args?.with?.service.
Related
I can get IBinding from a MethodInvocation.getName() and now I want to get the offset of this binding in the CompilationUnit in order to get the definition position. But I can not find any information of this. By the way, I use ASTParser.setSource(char[]) not IJavaProject.
The normal approach in JDT looks like this:
IJavaElement method= methodBinding.getJavaElement();
if (method instanceof IMember) {
ICompilationUnit cu= ((IMember) method).getCompilationUnit();
CompilationUnit compilationUnit= // use ASTParser here...
ASTNode methodDecl= compilationUnit.findDeclaringNode(methodBinding.getKey());
... methodDecl.getStartPosition() ...
}
This, however, requires that the Java Model is available. If you don't have an IJavaProject then #getJavaElement() will probably answer null. In that case you will have to implement your own heuristic for mapping an ITypeBinding (from IMethodBinding#getDeclaringClass()) to a compilation unit.
Put differently: if you want JDT to help locating elements outside the current compilation unit, then using the Java Model is the way to go.
As an alternative to using the full-blown Java Model, you could try parsing all relevant compilation units in one batch (using #getASTs() - plural), and then create your own reverse map from ITypeBinding to CompilationUnit.
I am implementing my own Map in Java, using a custom class I made.
I already implemented the hashCode and equals without any problem.
I just have a question more related into performance and stuff like that.
So I will check many times in my application if a specific value is inside the map, for that, for that I have to create a object and then use the methods containsKey of Map.
My question is...
Is there any other way? without being always creating the object???
I cant have all the objects in my context universe, so that isn't a way...
I know I can just point the object to 'null' after using it, but still, it's not so elegant, creating objects just to check if there is the same object inside =S
Are there any other conventions?
Thank you very much in advance!
EDIT:
Stuff typed = new Stuff(stuff1, stuff2, (char) stuff3);
if(StuffWarehouse.containsKey(typed))
{
//do stuff
}
//after this I won't want to use that object again so...
typed = null;
I decided to start a new project to get into hacklang, and after fixing some if the problems I initially ran into transitioning from php habits, I ran into the following errors:
Unbound name: str_replace
Unbound name: empty
Doing some research I found that this is due to using 'legacy' php which isn't typechecked, and will error with //strict.
That's fine and all, empty() was easy enough to replace, however str_replace() is a bit more difficult.
Is there an equivalent function that will work with //strict? Or at least something similar.
I'm aware that I could use //decl but I feel like that defeats the purpose in my case.
Is there at least any way to tell which functions are implemented in hack and which are not in the documentation as I couldn't find one?
For reference (though it isn't too relevant to the question itself), here is the code:
<?hh //strict
class HackMarkdown {
public function parse(string $content) : string {
if($content===null){
throw new RuntimeException('Empty Content');
}
$prepared = $this->prepare($content);
}
private function prepare(string $contentpre) : Vector<string>{
$contentpre = str_replace(array("\r\n","\r"),"\n",$contentpre);
//probably need more in here
$prepared = Vector::fromArray(explode($contentpre,"\n"));
//and here
return $prepared;
}
}
You don't need to change your code at all. You just need to tell the Hack tools about all the inbuilt PHP functions.
The easiest way to do this is to download this folder and put it somewhere in your project. I put it in a hhi folder in the base of my project. The files in there tell Hack about all the inbuilt PHP functions.
Most of them don't have type hints, which can lead to Hack thinking the return type of everything is mixed instead of the actual return, that is actually correct in most cases as, for example, str_replace can return either a string or a bool. However, it does stop the "unbound name" errors, which is the main reason for adding them.
Hi I have the following Code Snippet;
class StringCalci
{
static def plus(Integer self, Integer Operand)
{
return self.toInteger() * Operand.toInteger()
}
}
use (StringCalci)
{
println("inside the Use method!")
println( 12 + 3 )
}
println(12+3)
I was been shocked to see the use of Use in groovy. The thing is this I can add methods to the Class at run-time(my own methods).when I was looking at the above code, I was Thinking how does Groovy make things possible like this! The use of println inside the Use is multiplying the two given numbers(because I have Override the plus method) , where as the outside println adds it! My question is how does Groovy recognise the println executes in Use and println outside the Use. Is Use is a keyword/method? I need to understand behind the scenes of this process.. Please let me know :)
Thanks in Advance :)
Welcome to the wonderful world of dynamic languages where everything is possible and nothing is certain!
This feature is called Categories. As for the implementation:
use is in fact not a keyword but a method which the Groovy runtime adds to the Object class, which makes it available everywhere.
I think the functionality is implemented mainly in the class GroovyCategorySupport
Judging from the Javadoc, it's based on keeping a map of overriden methods in a ThreadLocal which is then consulted for every method call.
yeah, that's not so great for performance, but so are pretty much all the dynamic "magic" features that Groovy and similar languages offer (and there's lots of them).
I'm getting an error while trying to load an record through the constructor.
The constructor is:
public Document(Expression<Func<Document,bool>> expression);
and i try to load a single item in like this
var x = new Document(f=>f.publicationnumber=="xxx");
publicationnumber isn't a key but tried making an it an unique key and still no go..
Am i totally wrong regarding the use of the constructor? and can someone please tell me how to use that constructor?
The error i'm getting is:
Test method TestProject1.UnitTest1.ParseFileNameTwoProductSingleLanguage threw exception: System.NullReferenceException:
with the following stacktrace:
SubSonic.Query.SqlQuery.Where[T](Expression1` expression)
Load`[T]`(T item, Expression1expression)
db.Document..ctor(Expression``1 expression) in C:\#Projects\DocumentsSearchAndAdmin\DocumentsSearchAndAdmin\Generated\ActiveRecord.cs: line 5613
rest removed for simplicity
Regards
Dennis
Use == instead of =, i.e.:
...(f=>f.publicationnumber == "xxx");
I've just gotten the SubSonic source, and found out that it had to with the expression parser and my lack of knowledge thereof .. my right side of the expression was actually an item in an string array - and s[PUBNO] (PUBNO is a const) and it was looking for an column named s instead of publicationnumber, i don't know if this i a bug or not in the linq classes
none the less - i've managed to get it to work by creating a local variable containing the value of s[PUBNO] and using that instead...
//dennis