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with source_gen package, how can I get initializer value?
Code Splitting in DartImplement an Observer pattern in DartHow do I create a blank Future in Dart + how do I return a future currently in progress?How to write abstract class constructors so that it will be flexible for extending in sub classesHow to pass values to phaser (Dart port) State.init() function?When to use mixins and when to use interfaces in Dart?Flutter Mixed Layout - Grid with RowsHow to get a String from an AsyncSnapshot<String> in Flutter FutureBuilder?Flutter map_view center to user locationDart(/Flutter): Create function in initializer list
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I would like to get the initializer in the field corrected_time in code below. I found the field.initializer, but couldn't get much further. (the @Init annotation is temporary solution for now):
mixin PrerenderDoc on Doc implements AllowDelete
@Init(init_int: 0)
int corrected_time = 0;
dart
asked Mar 8 at 4:02
ChiNhanChiNhan
512
add a comment |
I would like to get the initializer in the field corrected_time in code below. I found the field.initializer, but couldn't get much further. (the @Init annotation is temporary solution for now):
mixin PrerenderDoc on Doc implements AllowDelete
@Init(init_int: 0)
int corrected_time = 0;
dart
asked Mar 8 at 4:02
ChiNhanChiNhan
512
Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07
add a comment |
I would like to get the initializer in the field corrected_time in code below. I found the field.initializer, but couldn't get much further. (the @Init annotation is temporary solution for now):
mixin PrerenderDoc on Doc implements AllowDelete
@Init(init_int: 0)
int corrected_time = 0;
dart
asked Mar 8 at 4:02
ChiNhanChiNhan
512
I would like to get the initializer in the field corrected_time in code below. I found the field.initializer, but couldn't get much further. (the @Init annotation is temporary solution for now):
mixin PrerenderDoc on Doc implements AllowDelete
@Init(init_int: 0)
int corrected_time = 0;
dart
dart
asked Mar 8 at 4:02
ChiNhanChiNhan
512
asked Mar 8 at 4:02
ChiNhanChiNhan
512
asked Mar 8 at 4:02
ChiNhanChiNhan
512
asked Mar 8 at 4:02
ChiNhanChiNhan
512
asked Mar 8 at 4:02
ChiNhanChiNhan
512
512
Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07
add a comment |
Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07
Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07
Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07
add a comment |
1 Answer
1
active
oldest
votes
I'm guessing that field is an instance of FieldElement. Unfortunately, if that's the case, then the answer is that analyzer doesn't have a value for the initializer. The analyzer only computes values for (a subset of) expressions that are constant expressions. For field initializers, that means that the field needs to be declared to be const, and the one in the example isn't.
(Annotations are constants and hence have values, which is why your workaround works.)
If the field were declared const, then you could use VariableElement.constantValue to access a representation of the value (VariableElement is a superclass of FieldElement).
The other option available to you is to use the AST structure and examine the structure of the expression, but if you want / need to handle anything more than just simple literal values, that can be quite complex.
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
add a comment |
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1 Answer
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1 Answer
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active
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oldest
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I'm guessing that field is an instance of FieldElement. Unfortunately, if that's the case, then the answer is that analyzer doesn't have a value for the initializer. The analyzer only computes values for (a subset of) expressions that are constant expressions. For field initializers, that means that the field needs to be declared to be const, and the one in the example isn't.
(Annotations are constants and hence have values, which is why your workaround works.)
If the field were declared const, then you could use VariableElement.constantValue to access a representation of the value (VariableElement is a superclass of FieldElement).
The other option available to you is to use the AST structure and examine the structure of the expression, but if you want / need to handle anything more than just simple literal values, that can be quite complex.
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
add a comment |
I'm guessing that field is an instance of FieldElement. Unfortunately, if that's the case, then the answer is that analyzer doesn't have a value for the initializer. The analyzer only computes values for (a subset of) expressions that are constant expressions. For field initializers, that means that the field needs to be declared to be const, and the one in the example isn't.
(Annotations are constants and hence have values, which is why your workaround works.)
If the field were declared const, then you could use VariableElement.constantValue to access a representation of the value (VariableElement is a superclass of FieldElement).
The other option available to you is to use the AST structure and examine the structure of the expression, but if you want / need to handle anything more than just simple literal values, that can be quite complex.
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
add a comment |
I'm guessing that field is an instance of FieldElement. Unfortunately, if that's the case, then the answer is that analyzer doesn't have a value for the initializer. The analyzer only computes values for (a subset of) expressions that are constant expressions. For field initializers, that means that the field needs to be declared to be const, and the one in the example isn't.
(Annotations are constants and hence have values, which is why your workaround works.)
If the field were declared const, then you could use VariableElement.constantValue to access a representation of the value (VariableElement is a superclass of FieldElement).
The other option available to you is to use the AST structure and examine the structure of the expression, but if you want / need to handle anything more than just simple literal values, that can be quite complex.
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
I'm guessing that field is an instance of FieldElement. Unfortunately, if that's the case, then the answer is that analyzer doesn't have a value for the initializer. The analyzer only computes values for (a subset of) expressions that are constant expressions. For field initializers, that means that the field needs to be declared to be const, and the one in the example isn't.
(Annotations are constants and hence have values, which is why your workaround works.)
If the field were declared const, then you could use VariableElement.constantValue to access a representation of the value (VariableElement is a superclass of FieldElement).
The other option available to you is to use the AST structure and examine the structure of the expression, but if you want / need to handle anything more than just simple literal values, that can be quite complex.
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
answered Mar 9 at 0:54
Brian WilkersonBrian Wilkerson
461
461
add a comment |
add a comment |
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Sent email to the right folks working on the analyzer API
– Kevin Moore
Mar 8 at 21:07