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163 lines
4.0 KiB
Markdown
163 lines
4.0 KiB
Markdown
section 2eK, formatting (layout)
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================================
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### `++re`
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Pretty-printing engine
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++ re
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|_ tac=tank
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Pretty-printing engine.
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`tac` is a [`++tank`](/doc/hoon/library/1#++tank).
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/~zod/try=> ~(. re leaf/"ham")
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<2.ghl [[%leaf ""] <414.gly 100.xkc 1.ypj %164>]>
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### `++ram`
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Flatten to tape
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++ ram
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^- tape
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?- -.tac
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%leaf p.tac
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%palm ram(tac [%rose [p.p.tac (weld q.p.tac r.p.tac) s.p.tac] q.tac])
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%rose
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%+ weld
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q.p.tac
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|- ^- tape
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?~ q.tac
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r.p.tac
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=+ voz=$(q.tac t.q.tac)
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(weld ram(tac i.q.tac) ?~(t.q.tac voz (weld p.p.tac voz)))
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==
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::
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Flatten tank out into a tape.
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/~zod/try=> ~(ram re leaf/"foo")
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"foo"
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/~zod/try=> ~(ram re rose/["." "(" ")"]^~[leaf/"bar" leaf/"baz" leaf/"bam"])
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"(bar.baz.bam)"
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### `++win`
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Render at indent
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++ win
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|= [tab=@ edg=@]
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=+ lug=`wall`~
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|^ |- ^- wall
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?- -.tac
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%leaf (rig p.tac)
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%palm
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?: fit
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(rig ram)
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?~ q.tac
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(rig q.p.tac)
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?~ t.q.tac
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(rig(tab (add 2 tab), lug $(tac i.q.tac)) q.p.tac)
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=> .(q.tac `(list tank)`q.tac)
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=+ lyn=(mul 2 (lent q.tac))
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=+ ^= qyr
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|- ^- wall
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?~ q.tac
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lug
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%= ^$
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tac i.q.tac
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tab (add tab (sub lyn 2))
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lug $(q.tac t.q.tac, lyn (sub lyn 2))
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==
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(wig(lug qyr) q.p.tac)
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::
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%rose
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?: fit
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(rig ram)
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=+ ^= gyl
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|- ^- wall
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?~ q.tac
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?:(=(%$ r.p.tac) lug (rig r.p.tac))
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^$(tac i.q.tac, lug $(q.tac t.q.tac), tab din)
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?: =(%$ q.p.tac)
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gyl
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(wig(lug gyl) q.p.tac)
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==
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::
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Render at indent level `tab` and width `edg`.
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`tab` and `edg` are [atom]()s.
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/~zod/try=> (~(win re leaf/"samoltekon-lapdok") 0 20)
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<<"samoltekon-lapdok">>
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/~zod/try=> (~(win re leaf/"samoltekon-lapdok") 0 10)
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<<"\/samolt\/" " ekon-l" " apdok" "\/ \/">>
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/~zod/try=> (~(win re rose/["--" "[" "]"]^~[leaf/"1423" leaf/"2316"]) 0 20)
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<<"[1423--2316]">>
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/~zod/try=> (~(win re rose/["--" "[" "]"]^~[leaf/"1423" leaf/"2316"]) 0 10)
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<<"[ 1423" " 2316" "]">>
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### `++din`
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++ din (mod (add 2 tab) (mul 2 (div edg 3)))
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XX document
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### `++fit`
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Fit on one line test
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++ fit (lte (lent ram) (sub edg tab))
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Determine whether `tac` fits on one line. Internal to `++win`
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### `++rig`
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Wrap in `\/`
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++ rig
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|= hom=tape
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^- wall
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?: (lte (lent hom) (sub edg tab))
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[(runt [tab ' '] hom) lug]
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=> .(tab (add tab 2), edg (sub edg 2))
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=+ mut=(trim (sub edg tab) hom)
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:- (runt [(sub tab 2) ' '] ['\\' '/' (weld p.mut `_hom`['\\' '/' ~])])
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=> .(hom q.mut)
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|-
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?~ hom
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:- %+ runt
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[(sub tab 2) ' ']
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['\\' '/' (runt [(sub edg tab) ' '] ['\\' '/' ~])]
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lug
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=> .(mut (trim (sub edg tab) hom))
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[(runt [tab ' '] p.mut) $(hom q.mut)]
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::
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Wrap tape in `\/` if it doesn't fit at current indentation. Internal to
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`++win`
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### `++wig`
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`++win` render tape
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++ wig
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|= hom=tape
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^- wall
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?~ lug
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(rig hom)
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=+ lin=(lent hom)
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=+ wug=:(add 1 tab lin)
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?. =+ mir=i.lug
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|- ?~ mir
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?|(=(0 wug) ?&(=(' ' i.mir) $(mir t.mir, wug (dec wug))))
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(rig hom) :: ^ XX regular form?
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[(runt [tab ' '] (weld hom `tape`[' ' (slag wug i.lug)])) t.lug]
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--
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--
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Render tape. Internal to `++win`.
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