Crate newter_compiler 

Newt — design canvas compiler and live renderer.

Parses .newt UI source, builds a layout tree, and renders to a wgpu canvas.

Re-exports

pub use ast::ImportDecl;

pub use ast::Program;

pub use ast::ProgramItem;

pub use ast::ScreenDecl;

pub use ast::ThemeDecl;

pub use error::format_error;

pub use error::NewtError;

pub use error::Source;

pub use error::Span;

pub use html::layout_to_html;

pub use html::layout_to_reactive_html;

pub use react::layout_to_react;

pub use layout::layout_tree;

pub use layout::LayoutNode;

pub use layout::Rect;

pub use lexer::TokenCategory;

pub use lexer::TokenKind;

pub use parser::Parser;

pub use app::App;

pub use value::EvalContext;

pub use value::Value;

pub use value::value_to_json;

Modules

app

Application loop: winit window, file watch, and render.

ast

Abstract Syntax Tree for the Newt UI language.

error

Error types and source span handling for the Newt compiler.

html

Export layout to standalone HTML so you can open it in a browser (no GPU needed).

layout

Flex-like layout engine: computes bounds for each element from the AST.

lexer

Lexer for the Newt UI language.

parser

Recursive descent parser for the Newt UI language.

react

Generate React JSX from the Newt layout tree.

renderer

wgpu-based 2D canvas renderer for layout nodes.

serve

Canvas IDE server: HTTP + WebSocket for live-reload canvas.

value

Runtime values for the Newt interpreter (used during layout).

Enums

SymbolKind

Symbol kind for LSP (hover, completion, go-to-definition).

Constants

DEFAULT_SERVE_PORT

Default port for the canvas IDE server.

DEFAULT_VIEWPORT_H

DEFAULT_VIEWPORT_W

Default viewport size for IDE and export (width, height).

Functions

check_all

Collect all parse errors from the source. Returns an empty vec on success. Designed for LSP use where all diagnostics should appear at once.

compile

Single compile entry: parse → resolve_imports (when path is set) → EvalContext → get_screen → layout_tree. Use this from CLI, serve, LSP, and app so behavior and diagnostics are consistent. Viewport is (0, 0, DEFAULT_VIEWPORT_W, DEFAULT_VIEWPORT_H) unless overridden later by the consumer.

compile_with_state

Like compile() but accepts state overrides and returns the effective state. State overrides are applied to variables matching state declarations in the program.

completion_element_names

Element names for completion (row, column, card, button, etc.).

completion_keywords

Keywords for completion (top-level and expression context).

completion_prop_names

Prop names valid for elements (layout, style, content).

get_screen

Get a screen by name. If name is None, returns the first screen. Use for multi-screen apps: Home, Dashboard, Settings, etc.

has_state_vars

Returns true if the program contains any state declarations.

parse

Parse source code into an AST. Returns the first error for backward compatibility. Use parse_all for all errors.

parse_all

Parse source code, returning all errors at once instead of stopping at the first.

parse_file

Parse a file into an AST.

resolve_imports

Resolve all import "path.newt" declarations by loading and merging those files. Avoids circular imports. base_dir is the directory of the current file.

screen_names

All screen names in the program (order preserved).

symbol_table

Build a symbol table from a program: name → (span, kind). Later definitions shadow earlier.

theme_css_vars

Collect color variables from the program for CSS export (:root { –name: #hex; }).

tokenize

Tokenize source for syntax highlighting. Returns (span, category) for each token until Eof.