Will Anderson
78 lines
2.3 KiB
Rust
78 lines
2.3 KiB
Rust
//! el-ui-compiler — Transforms `.el` component files into JavaScript.
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//!
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//! Pipeline:
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//! source text → lexer → tokens → parser → AST → codegen → JavaScript
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//!
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//! The output JavaScript uses the el-ui runtime (`el-ui.js`) to register
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//! components, manage a spreading-activation graph for state, and patch the DOM.
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pub mod ast;
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pub mod codegen;
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pub mod error;
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pub mod lexer;
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pub mod parser;
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pub use ast::{Attr, Component, Method, PropDef, StateDef, Template, TemplateNode};
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#[cfg(test)]
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mod tests;
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pub use codegen::Codegen;
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pub use error::{CompileError, CompileResult};
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/// High-level compiler entry point.
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pub struct Compiler {
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/// Runtime import path (default: `./el-ui.js`)
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pub runtime_path: String,
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}
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impl Default for Compiler {
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fn default() -> Self {
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Self { runtime_path: "./el-ui.js".into() }
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}
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}
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impl Compiler {
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pub fn new() -> Self {
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Self::default()
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}
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pub fn with_runtime_path(mut self, path: impl Into<String>) -> Self {
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self.runtime_path = path.into();
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self
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}
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/// Compile a single `.el` source file containing one or more components.
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/// Returns the JavaScript module string.
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pub fn compile_component(&self, source: &str) -> CompileResult<String> {
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let tokens = lexer::tokenize(source)?;
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let components = parser::parse(&tokens)?;
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let gen = Codegen::new(&self.runtime_path);
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gen.generate(&components)
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}
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/// Compile an app entry point, pulling in named component sources.
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/// `components` is a slice of `(name, source)` pairs.
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/// Returns a single JavaScript module that imports from the runtime.
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pub fn compile_app(
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&self,
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entry_source: &str,
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components: &[(&str, &str)],
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) -> CompileResult<String> {
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let mut all_components: Vec<Component> = Vec::new();
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for (_name, src) in components {
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let tokens = lexer::tokenize(src)?;
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let mut parsed = parser::parse(&tokens)?;
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all_components.append(&mut parsed);
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}
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// Parse entry last (may reference previously defined components)
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let entry_tokens = lexer::tokenize(entry_source)?;
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let mut entry_parsed = parser::parse(&entry_tokens)?;
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all_components.append(&mut entry_parsed);
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let gen = Codegen::new(&self.runtime_path);
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gen.generate(&all_components)
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}
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}
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