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feat: support parameterized computed fields #2744

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feat: support parameterized computed fields #2744

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4f5a860
feat: support parameterized computed fields
Jun 30, 2026
34fd025
test: add DateTime-parameterized computed field example (recentPostCo…
Jun 30, 2026
ef09757
fix: address review feedback
Jun 30, 2026
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44 changes: 43 additions & 1 deletion packages/language/src/generated/ast.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -355,6 +355,7 @@ export interface DataField extends langium.AstNode {
attributes: Array<DataFieldAttribute>;
comments: Array<string>;
name: RegularIDWithTypeNames;
params: Array<DataFieldParam>;
type: DataFieldType;
}

Expand All @@ -363,6 +364,7 @@ export const DataField = {
attributes: 'attributes',
comments: 'comments',
name: 'name',
params: 'params',
type: 'type'
} as const;

Expand All @@ -387,6 +389,25 @@ export function isDataFieldAttribute(item: unknown): item is DataFieldAttribute
return reflection.isInstance(item, DataFieldAttribute.$type);
}

export interface DataFieldParam extends langium.AstNode {
readonly $container: DataField;
readonly $type: 'DataFieldParam';
name: RegularID;
optional: boolean;
type: FunctionParamType;
}

export const DataFieldParam = {
$type: 'DataFieldParam',
name: 'name',
optional: 'optional',
type: 'type'
} as const;

export function isDataFieldParam(item: unknown): item is DataFieldParam {
return reflection.isInstance(item, DataFieldParam.$type);
}

export interface DataFieldType extends langium.AstNode {
readonly $container: DataField;
readonly $type: 'DataFieldType';
Expand Down Expand Up @@ -589,7 +610,7 @@ export function isFunctionParam(item: unknown): item is FunctionParam {
}

export interface FunctionParamType extends langium.AstNode {
readonly $container: FunctionDecl | FunctionParam | Procedure | ProcedureParam;
readonly $container: DataFieldParam | FunctionDecl | FunctionParam | Procedure | ProcedureParam;
readonly $type: 'FunctionParamType';
array: boolean;
reference?: langium.Reference<TypeDeclaration>;
Expand Down Expand Up @@ -1016,6 +1037,7 @@ export type ZModelAstType = {
ConfigInvocationExpr: ConfigInvocationExpr
DataField: DataField
DataFieldAttribute: DataFieldAttribute
DataFieldParam: DataFieldParam
DataFieldType: DataFieldType
DataModel: DataModel
DataModelAttribute: DataModelAttribute
Expand Down Expand Up @@ -1261,6 +1283,10 @@ export class ZModelAstReflection extends langium.AbstractAstReflection {
name: {
name: DataField.name
},
params: {
name: DataField.params,
defaultValue: []
},
type: {
name: DataField.type
}
Expand All @@ -1281,6 +1307,22 @@ export class ZModelAstReflection extends langium.AbstractAstReflection {
},
superTypes: []
},
DataFieldParam: {
name: DataFieldParam.$type,
properties: {
name: {
name: DataFieldParam.name
},
optional: {
name: DataFieldParam.optional,
defaultValue: false
},
type: {
name: DataFieldParam.type
}
},
superTypes: []
},
DataFieldType: {
name: DataFieldType.$type,
properties: {
Expand Down
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