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import CompoundExpression from './compound_expression';
import Within from './definitions/within';
import type {Expression} from './expression.js';
function isFeatureConstant(e: Expression) {
if (e instanceof CompoundExpression) {
if (e.name === 'get' && e.args.length === 1) {
return false;
} else if (e.name === 'feature-state') {
return false;
} else if (e.name === 'has' && e.args.length === 1) {
return false;
} else if (
e.name === 'properties' ||
e.name === 'geometry-type' ||
e.name === 'id'
) {
return false;
} else if (/^filter-/.test(e.name)) {
return false;
}
}
if (e instanceof Within) {
return false;
}
let result = true;
e.eachChild(arg => {
if (result && !isFeatureConstant(arg)) { result = false; }
});
return result;
}
function isStateConstant(e: Expression) {
if (e instanceof CompoundExpression) {
if (e.name === 'feature-state') {
return false;
}
}
let result = true;
e.eachChild(arg => {
if (result && !isStateConstant(arg)) { result = false; }
});
return result;
}
function isGlobalPropertyConstant(e: Expression, properties: Array<string>) {
if (e instanceof CompoundExpression && properties.indexOf(e.name) >= 0) { return false; }
let result = true;
e.eachChild((arg) => {
if (result && !isGlobalPropertyConstant(arg, properties)) { result = false; }
});
return result;
}
export {isFeatureConstant, isGlobalPropertyConstant, isStateConstant};
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