Traceability Matrix

Each requirement paragraph in the Language Specification, the SC API Reference, and the other chapters of this manual carries a unique identifier, shown as a [sls.…] badge at the end of the paragraph. A test case declares which requirements it verifies by listing their identifiers in //#sls.… comments. This matrix lists every requirement paragraph with the test cases that declare it. Requirements not yet covered by any test are marked ❌. Informative paragraphs — the document conventions (sls.meta.…) and examples — are not listed; the examples are compiled by the doctests test instead.

Tests marked case: are executed test cases from api/slint-sc/tests/cases/, tests marked syntax: are compiler syntax tests from internal/compiler/tests/syntax/slint-sc/.

Coverage: 65 of 92 requirement paragraphs are covered by at least one test.

Slint Language Specification

Source Files

Paragraph	Tests
`sls.source.file-extension`	❌
`sls.source.encoding.utf8`	`syntax: bom-encoding.slint` ↗
`sls.source.encoding.bom`	`syntax: bom-encoding.slint` ↗
`sls.source.line-terminators`	`syntax: crlf-line-terminators.slint` ↗
`sls.source.bare-cr`	`syntax: crlf-line-terminators.slint` ↗
`sls.source.whitespace.chars`	❌
`sls.source.whitespace.collapse`	`syntax: whitespace.slint` ↗
`sls.source.comment.line`	`case: component/with_comments.slint` ↗ `syntax: comments.slint` ↗
`sls.source.comment.block`	`case: component/with_comments.slint` ↗ `syntax: comments.slint` ↗
`sls.source.comment.whitespace-equivalent`	`case: component/with_comments.slint` ↗ `syntax: comments.slint` ↗
`sls.source.comment.no-doc-comments`	`syntax: comments.slint` ↗

Lexical Structure

Paragraph	Tests
`sls.lex.tokens`	❌
`sls.lex.identifier.classes`	❌
`sls.lex.identifier.no-leading-hyphen`	`syntax: identifier_leading_hyphen.slint` ↗ `syntax: identifier_leading_hyphen_element_id.slint` ↗ `syntax: identifier_leading_hyphen_inherits.slint` ↗ `syntax: identifier_leading_hyphen_property.slint` ↗
`sls.lex.identifier.normalization`	❌
`sls.lex.identifier.normalization-example`	`syntax: identifier_normalization_collision.slint` ↗
`sls.lex.identifier.canonical-form`	`syntax: identifier_normalization_collision.slint` ↗
`sls.lex.contextual-keywords`	❌

File Structure

Paragraph	Tests
`sls.file.source-file`	`syntax: source_file.slint` ↗
`sls.file.source-file.empty`	`syntax: empty_file.slint` ↗
`sls.file.top-level-item`	`syntax: enums.slint` ↗ `syntax: globals.slint` ↗ `syntax: source_file.slint` ↗ `syntax: structs.slint` ↗
`sls.file.component.definition-forms`	❌
`sls.file.component.name`	❌
`sls.file.component.inherits`	❌
`sls.file.component.body-braces`	❌
`sls.file.component.body`	`case: component/nested_rectangles.slint` ↗ `syntax: bindings.slint` ↗ `syntax: element_nesting.slint` ↗ `syntax: for_and_if.slint` ↗
`sls.file.component.body.empty`	`case: component/empty.slint` ↗
`sls.file.element.instantiation-form`	`case: component/nested_rectangles.slint` ↗ `syntax: element_nesting.slint` ↗
`sls.file.element.instantiation-typename`	❌
`sls.file.element.body`	`case: component/background_color.slint` ↗ `case: component/nested_rectangles.slint` ↗ `syntax: element_nesting.slint` ↗
`sls.file.element.tree`	`case: component/nested_rectangles.slint` ↗ `syntax: element_nesting.slint` ↗

Exports

Paragraph	Tests
`sls.export.placement`	❌
`sls.export.default-private`	❌
`sls.export.forms`	❌
`sls.export.declaration-site`	`case: component/empty.slint` ↗
`sls.export.list`	❌
`sls.export.rename`	❌
`sls.export.left-must-exist`	`syntax: export_specifiers.slint` ↗
`sls.export.no-duplicates`	❌

Properties

Paragraph	Tests
`sls.prop.def`	❌
`sls.prop.decl.form`	`case: component/properties.slint` ↗ `syntax: properties.slint` ↗
`sls.prop.decl.visibility`	`syntax: properties.slint` ↗ `syntax: property_protected.slint` ↗
`sls.prop.decl.in`	`case: component/properties.slint` ↗
`sls.prop.decl.out`	`case: component/properties.slint` ↗
`sls.prop.decl.in-out`	`case: component/properties.slint` ↗
`sls.prop.decl.private`	`case: component/properties.slint` ↗
`sls.prop.decl.root-only`	`syntax: properties.slint` ↗
`sls.prop.decl.types`	`syntax: properties.slint` ↗
`sls.prop.decl.default`	`case: component/properties.slint` ↗

Bindings

Paragraph	Tests
`sls.binding.form`	`case: component/background_color.slint` ↗ `syntax: color_literals.slint` ↗
`sls.binding.target-must-exist`	`syntax: bindings.slint` ↗
`sls.type.kinds`	❌
`sls.type.conversions`	`syntax: binding_types.slint` ↗
`sls.binding.type`	`syntax: binding_types.slint` ↗

Expressions

Paragraph	Tests
`sls.expr.forms`	`syntax: bindings.slint` ↗
`sls.expr.color.forms`	`syntax: color_literals.slint` ↗
`sls.expr.color.channels`	❌
`sls.expr.color.short-forms`	❌
`sls.expr.color.type`	❌
`sls.expr.length.form`	`case: component/rectangle_position.slint` ↗ `syntax: length_literal_space.slint` ↗ `syntax: units.slint` ↗
`sls.expr.length.integral`	`syntax: units.slint` ↗
`sls.expr.length.px-only`	`syntax: units.slint` ↗
`sls.expr.length.type`	`case: component/rectangle_position.slint` ↗

Geometry

Paragraph	Tests
`sls.geom.properties`	`syntax: units.slint` ↗
`sls.geom.relative`	`case: component/rectangle_nesting.slint` ↗
`sls.geom.window.root`	❌
`sls.geom.window`	`syntax: elements.slint` ↗
`sls.geom.default-position`	`case: component/rectangle_centered.slint` ↗ `case: component/rectangle_nesting.slint` ↗
`sls.geom.default-size`	`case: component/rectangle_nesting.slint` ↗

Colors and Brushes

Paragraph	Tests
`sls.type.color`	❌
`sls.type.brush`	`case: component/rectangle_position.slint` ↗
`sls.type.convert.color-to-brush`	`case: component/rectangle_position.slint` ↗ `syntax: binding_types.slint` ↗

Primitive & Numeric Types

Paragraph	Tests
`sls.type.length`	`case: component/properties.slint` ↗ `case: component/rectangle_position.slint` ↗

SC API Reference

Rectangle

Paragraph	Tests
`sls.ref.rectangle.background`	`case: component/rectangle_position.slint` ↗
`sls.ref.rectangle.empty`	`case: component/rectangle_position.slint` ↗

Window

Paragraph	Tests
`sls.ref.window.background`	`case: component/rectangle_position.slint` ↗

Safety Manual

Generated Code

Paragraph	Tests
`sls.gen.output`	❌
`sls.gen.component`	`case: component/empty.slint` ↗
`sls.gen.window-root`	`syntax: window_root.slint` ↗
`sls.gen.new`	`case: component/empty.slint` ↗
`sls.gen.render-rgb8`	`case: component/window_background.slint` ↗
`sls.gen.render-error`	`case: component/window_background.slint` ↗
`sls.gen.prop.field`	❌
`sls.gen.prop.names`	`case: component/properties.slint` ↗
`sls.gen.prop.get`	`case: component/properties.slint` ↗
`sls.gen.prop.set`	`case: component/properties.slint` ↗
`sls.gen.prop.types`	`case: component/properties.slint` ↗

Rendering

Paragraph	Tests
`sls.paint.invocation`	❌
`sls.paint.model`	`case: component/rectangle_nesting.slint` ↗ `case: component/rectangle_position.slint` ↗
`sls.paint.order`	`case: component/rectangle_nesting.slint` ↗
`sls.paint.clip`	`case: component/rectangle_nesting.slint` ↗ `case: component/rectangle_wider_than_window.slint` ↗
`sls.paint.no-parent-clip`	`case: component/rectangle_nesting.slint` ↗