Skip to content

fix(golang): emit valid struct type for map fields #315

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
chaitijain593-prog wants to merge 4 commits into
base: main
Choose a base branch
from
Open

fix(golang): emit valid struct type for map fields #315

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
933182a
fix(golang): emit valid struct type for map fields
chaitijain593-prog Nov 8, 2026
64d0916
fix(golang): handle DateTime in map fields for time import
chaitijain593-prog Nov 10, 2026
c98ceb0
fix(golang): avoid unused time import for inherited map fields
chaitijain593-prog Nov 11, 2026
b94b94e
refactor(golang): extract map type resolution helper and add test for…
chaitijain593-prog Nov 13, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 4 additions & 3 deletions lib/codegen/fromcto/golang/golangvisitor.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -175,19 +175,20 @@ class GoLangVisitor {
let mapKeyType = mapDeclaration.getKey().getType();
let mapValueType = mapDeclaration.getValue().getType();

if (mapDeclaration.getModelFile().getType(mapKeyType).isScalarDeclaration?.()) {
if (mapDeclaration.getModelFile().getType(mapKeyType)?.isScalarDeclaration?.()) {
mapKeyType = mapDeclaration.getModelFile().getType(mapKeyType).getType();
}

const goKeyType = this.toGoType(mapKeyType);

if (mapDeclaration.getModelFile().getType(mapValueType).isScalarDeclaration?.()) {
if (mapDeclaration.getModelFile().getType(mapValueType)?.isScalarDeclaration?.()) {
mapValueType = mapDeclaration.getModelFile().getType(mapValueType).getType();
}

const goValueType = this.toGoType(mapValueType);

parameters.fileWriter.writeLine(1, `${field.getName()} := make(map[${goKeyType}]${goValueType})` + ' `json:"' + field.getName() + '"`');
const name = field.getName().startsWith('$') ? field.getName().substring(1) : field.getName();
Comment thread
chaitijain593-prog marked this conversation as resolved.
Resolved
parameters.fileWriter.writeLine(1, `${ModelUtil.capitalizeFirstLetter(name)} map[${goKeyType}]${goValueType}` + ' `json:"' + field.getName() + '"`');
Comment thread
chaitijain593-prog marked this conversation as resolved.
Resolved
return null;
}

Expand Down
12 changes: 6 additions & 6 deletions test/codegen/__snapshots__/codegen.js.snap
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1059,11 +1059,11 @@ type Company struct {
concerto_1_0_0.Concept
Name string \`json:"name"\`
Headquarters Address \`json:"headquarters"\`
companyProperties := make(map[string]string) \`json:"companyProperties"\`
employeeDirectory := make(map[string]Employee) \`json:"employeeDirectory"\`
employeeTShirtSizes := make(map[string]TShirtSizeType) \`json:"employeeTShirtSizes"\`
employeeProfiles := make(map[string]Concept) \`json:"employeeProfiles"\`
employeeSocialSecurityNumbers := make(map[string]string) \`json:"employeeSocialSecurityNumbers"\`
CompanyProperties map[string]string \`json:"companyProperties"\`
EmployeeDirectory map[string]Employee \`json:"employeeDirectory"\`
EmployeeTShirtSizes map[string]TShirtSizeType \`json:"employeeTShirtSizes"\`
EmployeeProfiles map[string]Concept \`json:"employeeProfiles"\`
EmployeeSocialSecurityNumbers map[string]string \`json:"employeeSocialSecurityNumbers"\`
}
type Department int
const (
Expand Down Expand Up @@ -1097,7 +1097,7 @@ type Person struct {
Ssn string \`json:"ssn"\`
Height float64 \`json:"height"\`
Dob time.Time \`json:"dob"\`
nextOfKin := make(map[string]string) \`json:"nextOfKin"\`
NextOfKin map[string]string \`json:"nextOfKin"\`
}
type Employee struct {
Person
Expand Down
34 changes: 33 additions & 1 deletion test/codegen/fromcto/golang/golangvisitor.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -382,7 +382,39 @@ describe('GoLangVisitor', function () {

goVisit.visitField(mockField,param);

param.fileWriter.writeLine.withArgs(1, 'dictionary := make(map[string]string) `json:"dictionary"`').calledOnce.should.be.ok;
param.fileWriter.writeLine.withArgs(1, 'Dictionary map[string]string `json:"dictionary"`').calledOnce.should.be.ok;
Comment thread
chaitijain593-prog marked this conversation as resolved.
Resolved
});

it('should handle map field when getType returns null for external or primitive types', () => {
let param = {
fileWriter: mockFileWriter,
};

sandbox.restore();
sandbox.stub(ModelUtil, 'isMap').callsFake(() => {
return true;
});

const mockField = sinon.createStubInstance(Field);
const mockMapDeclaration = sinon.createStubInstance(MapDeclaration);

mockField.getType.returns('Map1');
mockField.getName.returns('properties');
mockField.getModelFile.returns({
getType: sinon.stub().returns(mockMapDeclaration),
});

mockMapDeclaration.getName.returns('Map1');
mockMapDeclaration.getKey.returns({ getType: () => 'String' });
mockMapDeclaration.getValue.returns({ getType: () => 'ExternalType' });
// getType returns null (e.g. cross-namespace or unresolved type)
mockMapDeclaration.getModelFile.returns({
getType: sinon.stub().returns(null),
});

goVisit.visitField(mockField, param);

param.fileWriter.writeLine.withArgs(1, 'Properties map[string]ExternalType `json:"properties"`').calledOnce.should.be.ok;
});

});
Expand Down