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refactor(language-service): clean up and exports and consolidate types (#36533)

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PR Close #36533
This commit is contained in:
Ayaz Hafiz
2020-04-08 20:05:32 -07:00
committed by atscott
parent d50cb30443
commit 5e80e7e216
24 changed files with 251 additions and 433 deletions
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59
packages/language-service/src/template.ts
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@ -132,62 +132,3 @@ export class ExternalTemplate extends BaseTemplate {
};
}
}
/**
* Returns a property assignment from the assignment value, or `undefined` if there is no
* assignment.
*/
export function getPropertyAssignmentFromValue(value: ts.Node): ts.PropertyAssignment|undefined {
if (!value.parent || !ts.isPropertyAssignment(value.parent)) {
return;
}
return value.parent;
}
/**
* Given a decorator property assignment, return the ClassDeclaration node that corresponds to the
* directive class the property applies to.
* If the property assignment is not on a class decorator, no declaration is returned.
*
* For example,
*
* @Component({
* template: '<div></div>'
* ^^^^^^^^^^^^^^^^^^^^^^^---- property assignment
* })
* class AppComponent {}
* ^---- class declaration node
*
* @param propAsgn property assignment
*/
export function getClassDeclFromDecoratorProp(propAsgnNode: ts.PropertyAssignment):
ts.ClassDeclaration|undefined {
if (!propAsgnNode.parent || !ts.isObjectLiteralExpression(propAsgnNode.parent)) {
return;
}
const objLitExprNode = propAsgnNode.parent;
if (!objLitExprNode.parent || !ts.isCallExpression(objLitExprNode.parent)) {
return;
}
const callExprNode = objLitExprNode.parent;
if (!callExprNode.parent || !ts.isDecorator(callExprNode.parent)) {
return;
}
const decorator = callExprNode.parent;
if (!decorator.parent || !ts.isClassDeclaration(decorator.parent)) {
return;
}
const classDeclNode = decorator.parent;
return classDeclNode;
}
/**
* Determines if a property assignment is on a class decorator.
* See `getClassDeclFromDecoratorProperty`, which gets the class the decorator is applied to, for
* more details.
*
* @param prop property assignment
*/
export function isClassDecoratorProperty(propAsgn: ts.PropertyAssignment): boolean {
return !!getClassDeclFromDecoratorProp(propAsgn);
}