Handle empty expressions

finchie

Nov 11, 2023, 1:57 PM

I5IZPMTHBVJWTR4RWCNMD75E3FHAHN3KY4XQPKAEV72PCDNFDOLQC

Dependencies

• [2] CQEA2ZDI Parse evaluated Typst code instead of AST
• [3] BA5Y6VSE Output Rust code using `syn`
• [4] YKL5NCLH Import items from `syn`
• [5] 2N3KOCP7 Create MVP Pandoc->Rust compiler
• [6] HEIF2O2E Migrate from `pandoc` to `typst` for AST processing
• [7] GYTRFADR Support Typst subdirectories
• [8] BSJYWOYS Implement MVP Typst embedding
• [9] JCYJWUI3 Add support for various text formats

Change contents

• replacement in docs/test.typ at line 1
  [3.242]→[3.0:15](∅→∅)
  − = Heading

  − hello
  [3.242]
  + #let add(x, y) = x + y

  + Sum is #add(2, 3)
• edit in crates/typser/src/lib.rs at line 16
  [3.402]→[3.424:457](∅→∅)
  − use typst::syntax::ast::AstNode;
• replacement in crates/typser/src/lib.rs at line 321
  [3.2143]→[2.143:209](∅→∅)
  − fn typst_expr_to_xilem(value: &typst::eval::Value) -> syn::Expr {
  [3.2143]

  [2.209]
  + fn typst_expr_to_xilem(value: &typst::eval::Value) -> Option<syn::Expr> {
• replacement in crates/typser/src/lib.rs at line 323
  [2.227]→[2.227:319](∅→∅)
  − typst::eval::Value::Str(string) => syn::Expr::Lit(literal_string(string.as_str())),
  [2.227]

  [2.319]
  + typst::eval::Value::Str(string) => Some(syn::Expr::Lit(literal_string(string.as_str()))),
• replacement in crates/typser/src/lib.rs at line 325
  [2.369]→[2.369:510](∅→∅)
  − let supported_content = content::SupportedContent::downcast(content).unwrap();

  − supported_content.to_xilem().unwrap()
  [2.369]

  [3.2211]
  + dbg!(content);

  + let supported_content = content::SupportedContent::downcast(content)?;

  + Some(supported_content.to_xilem()?)
• replacement in crates/typser/src/lib.rs at line 348
  [2.729]→[2.729:747](∅→∅)
  − panic!();
  [2.729]

  [2.747]
  + dbg!(root);

  + todo!();
• edit in crates/typser/src/lib.rs at line 355
  [3.2389]

  [3.2389]
  + // Remove any empty expressions (`None`)

  + .filter_map(|expr| expr)
• replacement in crates/typser/src/content.rs at line 16
  [2.3326]→[2.3326:3385](∅→∅)
  − if let Some(heading) = value.to::<HeadingElem>() {
  [2.3326]

  [2.3385]
  + if value.is_empty() {

  + None

  + } else if let Some(heading) = value.to::<HeadingElem>() {
• replacement in crates/typser/src/content.rs at line 26
  [2.3662]→[2.3662:3679](∅→∅)
  − None
  [2.3662]

  [2.3679]
  + todo!()