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calculate_blockers() — svelte Function Reference

Architecture documentation for the calculate_blockers() function in index.js from the svelte codebase.

Function javascript Compiler Transformer calls 15 called by 1

Entity Profile

Dependency Diagram

graph TD
  aced5321_4478_4f67_ba8c_e122713c1d9f["calculate_blockers()"]
  4aa8a188_84d4_0274_ed83_cac0ab1d3572["index.js"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|defined in| 4aa8a188_84d4_0274_ed83_cac0ab1d3572
  78a6ba9a_5003_f569_a638_76e4f1977809["analyze_component()"]
  78a6ba9a_5003_f569_a638_76e4f1977809 -->|calls| aced5321_4478_4f67_ba8c_e122713c1d9f
  784480d0_767d_ac40_b03e_ae8ddcc82684["Set()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 784480d0_767d_ac40_b03e_ae8ddcc82684
  f72c7999_3638_d4ad_b02b_f10540505c54["ImportDeclaration()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| f72c7999_3638_d4ad_b02b_f10540505c54
  5c01291d_15ff_bab3_2463_d54766affbf6["Identifier()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 5c01291d_15ff_bab3_2463_d54766affbf6
  627dc2f8_4dbc_5bb1_8f54_cee503e17098["get()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 627dc2f8_4dbc_5bb1_8f54_cee503e17098
  d935f45f_6959_e32d_6e74_07f0885da3b7["unwrap_pattern()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| d935f45f_6959_e32d_6e74_07f0885da3b7
  804afe56_25d1_9f41_dafe_adc75e952134["object()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 804afe56_25d1_9f41_dafe_adc75e952134
  d33c6b94_58e2_ebb4_1c33_58fa9af1535d["AssignmentExpression()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| d33c6b94_58e2_ebb4_1c33_58fa9af1535d
  05215418_7b1e_a936_d190_16d901793aae["UpdateExpression()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 05215418_7b1e_a936_d190_16d901793aae
  f847bd70_7e16_ed37_5fde_c34cd0ce1d43["CallExpression()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| f847bd70_7e16_ed37_5fde_c34cd0ce1d43
  bed91719_d047_2256_e199_ee875d5f49b9["get_rune()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| bed91719_d047_2256_e199_ee875d5f49b9
  58dd95ce_ec89_3632_c3c2_960c79eb5ec0["ArrowFunctionExpression()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 58dd95ce_ec89_3632_c3c2_960c79eb5ec0
  56f3948c_7ceb_ca49_e56d_8edd0d6e5ded["FunctionDeclaration()"]
  aced5321_4478_4f67_ba8c_e122713c1d9f -->|calls| 56f3948c_7ceb_ca49_e56d_8edd0d6e5ded
  style aced5321_4478_4f67_ba8c_e122713c1d9f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/src/compiler/phases/2-analyze/index.js lines 947–1217

function calculate_blockers(instance, scopes, analysis) {
	/**
	 * @param {ESTree.Node} expression
	 * @param {Scope} scope
	 * @param {Set<Binding>} touched
	 * @param {Set<ESTree.Node>} seen
	 */
	const touch = (expression, scope, touched, seen = new Set()) => {
		if (seen.has(expression)) return;
		seen.add(expression);

		walk(
			expression,
			{ scope },
			{
				ImportDeclaration(node) {},
				Identifier(node, context) {
					const parent = /** @type {ESTree.Node} */ (context.path.at(-1));
					if (is_reference(node, parent)) {
						const binding = context.state.scope.get(node.name);
						if (binding) {
							touched.add(binding);

							for (const assignment of binding.assignments) {
								touch(assignment.value, assignment.scope, touched, seen);
							}
						}
					}
				}
			}
		);
	};

	/**
	 * @param {ESTree.Node} node
	 * @param {Set<ESTree.Node>} seen
	 * @param {Set<Binding>} reads
	 * @param {Set<Binding>} writes
	 */
	const trace_references = (node, reads, writes, seen = new Set()) => {
		if (seen.has(node)) return;
		seen.add(node);

		/**
		 * @param {ESTree.Pattern} node
		 * @param {Scope} scope
		 */
		function update(node, scope) {
			for (const pattern of unwrap_pattern(node)) {
				const node = object(pattern);
				if (!node) return;

				const binding = scope.get(node.name);
				if (!binding) return;

				writes.add(binding);
			}
		}

		walk(
			node,
			{ scope: instance.scope },
			{
				_(node, context) {
					const scope = scopes.get(node);
					if (scope) {
						context.next({ scope });
					} else {
						context.next();
					}
				},
				AssignmentExpression(node, context) {
					update(node.left, context.state.scope);
				},
				UpdateExpression(node, context) {
					update(
						/** @type {ESTree.Identifier | ESTree.MemberExpression} */ (node.argument),
						context.state.scope
					);
				},
				CallExpression(node, context) {

Domain

Subdomains

Defined In

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Source

Frequently Asked Questions

What does calculate_blockers() do?
calculate_blockers() is a function in the svelte codebase, defined in packages/svelte/src/compiler/phases/2-analyze/index.js.
Where is calculate_blockers() defined?
calculate_blockers() is defined in packages/svelte/src/compiler/phases/2-analyze/index.js at line 947.
What does calculate_blockers() call?
calculate_blockers() calls 15 function(s): ArrowFunctionExpression, AssignmentExpression, CallExpression, FunctionDeclaration, FunctionExpression, Identifier, ImportDeclaration, Set, and 7 more.
What calls calculate_blockers()?
calculate_blockers() is called by 1 function(s): analyze_component.

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