All files / src/compiler/phases/3-transform/client/visitors/shared element.js

95.77% Statements 136/142
92.1% Branches 35/38
100% Functions 4/4
95.65% Lines 132/138

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 1392x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3043x 3043x 3043x 3043x 3043x 3043x 3043x 3043x 3043x 32x 32x 32x 32x 32x 32x 32x 32x           32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x   32x 22x 32x 10x 10x 32x 3043x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3043x 3043x 3043x 3043x 3043x 3043x 3043x 22x 22x 22x 22x 1x 1x 1x 1x 1x 22x 22x 22x 22x 1x 22x 17x 21x 4x 4x 22x 3043x 2x 2x 2x 2x 2x 2x 866x 8x 8x 858x 866x 814x 814x 814x 219x 219x 595x 595x 595x 595x 595x 595x 595x 44x 44x 44x 2x 2x 2x 2x 2x 2x 2x 997x 903x 903x 94x 94x 94x  
/** @import { Expression, Identifier } from 'estree' */
/** @import { AST, Namespace } from '#compiler' */
/** @import { ComponentContext } from '../../types' */
import { normalize_attribute } from '../../../../../../utils.js';
import * as b from '../../../../../utils/builders.js';
import { build_getter, create_derived } from '../../utils.js';
import { build_template_literal, build_update } from './utils.js';
 
/**
 * Serializes each style directive into something like `$.set_style(element, style_property, value)`
 * and adds it either to init or update, depending on whether or not the value or the attributes are dynamic.
 * @param {AST.StyleDirective[]} style_directives
 * @param {Identifier} element_id
 * @param {ComponentContext} context
 * @param {boolean} is_attributes_reactive
 * @param {boolean} force_check Should be `true` if we can't rely on our cached value, because for example there's also a `style` attribute
 */
export function build_style_directives(
	style_directives,
	element_id,
	context,
	is_attributes_reactive,
	force_check
) {
	const state = context.state;
 
	for (const directive of style_directives) {
		const { has_state, has_call } = directive.metadata.expression;
 
		let value =
			directive.value === true
				? build_getter({ name: directive.name, type: 'Identifier' }, context.state)
				: build_attribute_value(directive.value, context).value;
 
		if (has_call) {
			const id = b.id(state.scope.generate('style_directive'));

			state.init.push(b.const(id, create_derived(state, b.thunk(value))));
			value = b.call('$.get', id);
		}
 
		const update = b.stmt(
			b.call(
				'$.set_style',
				element_id,
				b.literal(directive.name),
				value,
				/** @type {Expression} */ (directive.modifiers.includes('important') ? b.true : undefined),
				force_check ? b.true : undefined
			)
		);
 
		if (!is_attributes_reactive && has_call) {
			state.init.push(build_update(update));
		} else if (is_attributes_reactive || has_state || has_call) {
			state.update.push(update);
		} else {
			state.init.push(update);
		}
	}
}
 
/**
 * Serializes each class directive into something like `$.class_toogle(element, class_name, value)`
 * and adds it either to init or update, depending on whether or not the value or the attributes are dynamic.
 * @param {AST.ClassDirective[]} class_directives
 * @param {Identifier} element_id
 * @param {ComponentContext} context
 * @param {boolean} is_attributes_reactive
 */
export function build_class_directives(
	class_directives,
	element_id,
	context,
	is_attributes_reactive
) {
	const state = context.state;
	for (const directive of class_directives) {
		const { has_state, has_call } = directive.metadata.expression;
		let value = /** @type {Expression} */ (context.visit(directive.expression));
 
		if (has_call) {
			const id = b.id(state.scope.generate('class_directive'));
 
			state.init.push(b.const(id, create_derived(state, b.thunk(value))));
			value = b.call('$.get', id);
		}
 
		const update = b.stmt(b.call('$.toggle_class', element_id, b.literal(directive.name), value));
 
		if (!is_attributes_reactive && has_call) {
			state.init.push(build_update(update));
		} else if (is_attributes_reactive || has_state || has_call) {
			state.update.push(update);
		} else {
			state.init.push(update);
		}
	}
}
 
/**
 * @param {AST.Attribute['value']} value
 * @param {ComponentContext} context
 */
export function build_attribute_value(value, context) {
	if (value === true) {
		return { has_state: false, has_call: false, value: b.literal(true) };
	}
 
	if (!Array.isArray(value) || value.length === 1) {
		const chunk = Array.isArray(value) ? value[0] : value;
 
		if (chunk.type === 'Text') {
			return { has_state: false, has_call: false, value: b.literal(chunk.data) };
		}
 
		return {
			has_state: chunk.metadata.expression.has_state,
			has_call: chunk.metadata.expression.has_call,
			value: /** @type {Expression} */ (context.visit(chunk.expression))
		};
	}
 
	return build_template_literal(value, context.visit, context.state);
}
 
/**
 * @param {AST.RegularElement | AST.SvelteElement} element
 * @param {AST.Attribute} attribute
 * @param {{ state: { metadata: { namespace: Namespace }}}} context
 */
export function get_attribute_name(element, attribute, context) {
	if (!element.metadata.svg && !element.metadata.mathml) {
		return normalize_attribute(attribute.name);
	}
 
	return attribute.name;
}