ember-ast-helpers
Version:
Utility belt to level-up your Ember AST transforms
88 lines (87 loc) • 3.72 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const html_1 = require("../html");
function splitInterpolation(interpolation, divisor) {
let parts = [];
let lastMatch = 0;
let inCaptureGroup = false;
for (let i = 0; i < interpolation.length; i++) {
if (interpolation[i] === divisor) {
parts.push(interpolation.slice(lastMatch, i + (inCaptureGroup ? 1 : 0)));
inCaptureGroup = !inCaptureGroup;
lastMatch = i + (inCaptureGroup ? 0 : 1);
}
}
if (lastMatch < interpolation.length - 1) {
parts.push(interpolation.slice(lastMatch, interpolation.length));
}
if (parts[0] === '') {
return parts.slice(1);
}
return parts;
}
function buildConcatIfPresent(b, cond, concatParts) {
let sanitizedConcatParts = concatParts.map((p) => typeof p === 'string' ? b.string(p) : p);
return b.mustache(b.path('if'), [cond, b.sexpr(b.path('concat'), sanitizedConcatParts)]);
}
function interpolateProperties(b, interpolation, { divisor = ':', skipIfMissing = true, skipIfMissingDynamic = false, callback } = {}) {
let parts = splitInterpolation(interpolation, divisor);
return function _interpolate() {
let concatParts = [];
let hasDynamicInterpolation = false;
let missingInterpolationValues = false;
let interpolations = {};
for (let part of parts) {
let propName;
if (part[0] === divisor && part[part.length - 1] === divisor) {
propName = part.slice(1, part.length - 1);
let attrValue = this.invocationAttrs[propName];
let value;
if (this[`${propName}Content`] && this[`${propName}Content`] !== _interpolate) {
value = this[`${propName}Content`]();
}
else if (attrValue) {
value = attrValue;
}
else if (this.options.hasOwnProperty(propName)) {
value = this.options[propName];
}
else if (this.hasOwnProperty(propName)) {
value = this[propName];
}
if (skipIfMissing && value === null || value === undefined || value.type === 'UndefinedLiteral' || value.type === 'NullLiteral') {
missingInterpolationValues = true;
}
else {
interpolations[propName] = value;
concatParts.push(value);
}
}
else {
concatParts.push(part);
}
}
if (!missingInterpolationValues || !skipIfMissing) {
if (callback !== undefined) {
callback.apply(this, [interpolations]);
}
if (skipIfMissingDynamic) {
let interpolationsArray = [];
for (let key in interpolations) {
interpolationsArray.push(interpolations[key]);
}
if (interpolationsArray.length > 1) {
throw new Error("Can't pass `skipIfMissingDynamic: true` with more than one interpolated value");
}
let interpolation = interpolationsArray[0];
if (typeof interpolation === 'object') {
if (interpolation.type === 'PathExpression' || interpolation.type === 'SubExpression') {
return buildConcatIfPresent(b, interpolation, concatParts);
}
}
}
return html_1.buildAttrContent(b, concatParts);
}
};
}
exports.default = interpolateProperties;