--- parse tree ---
[ Code
    "test/typ/meta/query-header-00.typ"
    ( line 1 , column 2 )
    (Let
       (BasicBind (Just (Identifier "test")))
       (FuncExpr
          [ NormalParam (Identifier "x") , NormalParam (Identifier "y") ]
          (Block
             (CodeBlock
                [ If
                    [ ( Equals (Ident (Identifier "x")) (Ident (Identifier "y"))
                      , Block (Content [ Text "\9989" ])
                      )
                    , ( Literal (Boolean True)
                      , Block
                          (Content
                             [ Text "\10060"
                             , Text "("
                             , Code
                                 "test/typ/meta/query-header-00.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/meta/query-header-00.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Code
    "test/typ/meta/query-header-00.typ"
    ( line 2 , column 2 )
    (Set
       (Ident (Identifier "page"))
       [ KeyValArg (Identifier "paper") (Literal (String "a7"))
       , KeyValArg
           (Identifier "margin")
           (Dict
              [ Reg ( Ident (Identifier "y") , Literal (Numeric 1.0 Cm) )
              , Reg ( Ident (Identifier "x") , Literal (Numeric 0.5 Cm) )
              ])
       , KeyValArg
           (Identifier "header")
           (Block
              (CodeBlock
                 [ FuncCall
                     (Ident (Identifier "smallcaps"))
                     [ BlockArg [ Text "Typst" , Space , Text "Academy" ] ]
                 , FuncCall
                     (Ident (Identifier "h")) [ NormalArg (Literal (Numeric 1.0 Fr)) ]
                 , FuncCall
                     (Ident (Identifier "locate"))
                     [ NormalArg
                         (FuncExpr
                            [ NormalParam (Identifier "it") ]
                            (Block
                               (CodeBlock
                                  [ Let
                                      (BasicBind (Just (Identifier "after")))
                                      (FuncCall
                                         (Ident (Identifier "query"))
                                         [ NormalArg
                                             (FuncCall
                                                (FieldAccess
                                                   (Ident (Identifier "after"))
                                                   (FuncCall
                                                      (Ident (Identifier "selector"))
                                                      [ NormalArg (Ident (Identifier "heading")) ]))
                                                [ NormalArg (Ident (Identifier "it")) ])
                                         , NormalArg (Ident (Identifier "it"))
                                         ])
                                  , Let
                                      (BasicBind (Just (Identifier "before")))
                                      (FuncCall
                                         (Ident (Identifier "query"))
                                         [ NormalArg
                                             (FuncCall
                                                (FieldAccess
                                                   (Ident (Identifier "before"))
                                                   (FuncCall
                                                      (Ident (Identifier "selector"))
                                                      [ NormalArg (Ident (Identifier "heading")) ]))
                                                [ NormalArg (Ident (Identifier "it")) ])
                                         , NormalArg (Ident (Identifier "it"))
                                         ])
                                  , Let
                                      (BasicBind (Just (Identifier "elem")))
                                      (If
                                         [ ( Not
                                               (Equals
                                                  (FuncCall
                                                     (FieldAccess
                                                        (Ident (Identifier "len"))
                                                        (Ident (Identifier "before")))
                                                     [])
                                                  (Literal (Int 0)))
                                           , Block
                                               (CodeBlock
                                                  [ FuncCall
                                                      (FieldAccess
                                                         (Ident (Identifier "last"))
                                                         (Ident (Identifier "before")))
                                                      []
                                                  ])
                                           )
                                         , ( Not
                                               (Equals
                                                  (FuncCall
                                                     (FieldAccess
                                                        (Ident (Identifier "len"))
                                                        (Ident (Identifier "after")))
                                                     [])
                                                  (Literal (Int 0)))
                                           , Block
                                               (CodeBlock
                                                  [ FuncCall
                                                      (FieldAccess
                                                         (Ident (Identifier "first"))
                                                         (Ident (Identifier "after")))
                                                      []
                                                  ])
                                           )
                                         ])
                                  , FuncCall
                                      (Ident (Identifier "emph"))
                                      [ NormalArg
                                          (FieldAccess
                                             (Ident (Identifier "body"))
                                             (Ident (Identifier "elem")))
                                      ]
                                  ])))
                     ]
                 ]))
       ])
, ParBreak
, Code
    "test/typ/meta/query-header-00.typ"
    ( line 21 , column 2 )
    (FuncCall (Ident (Identifier "outline")) [])
, ParBreak
, Heading 1 [ Text "Introduction" ]
, Code
    "test/typ/meta/query-header-00.typ"
    ( line 24 , column 2 )
    (FuncCall
       (Ident (Identifier "lorem")) [ NormalArg (Literal (Int 35)) ])
, ParBreak
, Heading 1 [ Text "Background" ]
, Code
    "test/typ/meta/query-header-00.typ"
    ( line 27 , column 2 )
    (FuncCall
       (Ident (Identifier "lorem")) [ NormalArg (Literal (Int 35)) ])
, ParBreak
, Heading 1 [ Text "Approach" ]
, Code
    "test/typ/meta/query-header-00.typ"
    ( line 30 , column 2 )
    (FuncCall
       (Ident (Identifier "lorem")) [ NormalArg (Literal (Int 60)) ])
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 parbreak(), 
                 outline(), 
                 parbreak(), 
                 heading(body: text(body: [Introduction]), 
                         level: 1), 
                 text(body: [Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo]), 
                 parbreak(), 
                 heading(body: text(body: [Background]), 
                         level: 1), 
                 text(body: [Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo]), 
                 parbreak(), 
                 heading(body: text(body: [Approach]), 
                         level: 1), 
                 text(body: [Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in]), 
                 parbreak() })