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532 lines
13 KiB
Markdown
532 lines
13 KiB
Markdown
section 2eH, parsing (idioms)
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=============================
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<h3 id="++alf"><code>++alf</code></h3>
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Alphabetic characters
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++ alf ;~(pose low hig) :: alphabetic
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Parse alphabetic characters, both upper and lowercase.
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~zod/try=> (scan "a" alf)
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~~a
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~zod/try=> (scan "A" alf)
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~~~41.
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~zod/try=> (scan "AaBbCc" (star alf))
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"AaBbCc"
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------------------------------------------------------------------------
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<h3 id="++aln"><code>++aln</code></h3>
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Alphanumeric characters
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++ aln ;~(pose low hig nud) :: alphanumeric
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Parse alphanumeric characters - both alphabetic characters and numbers.
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~zod/try=> (scan "0" aln)
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~~0
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~zod/try=> (scan "alf42" (star aln))
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"alf42"
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~zod/try=> (scan "0123456789abcdef" (star aln))
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"0123456789abcdef"
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------------------------------------------------------------------------
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<h3 id="++alp"><code>++alp</code></h3>
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Alphanumeric and `-`
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++ alp ;~(pose low hig nud hep) :: alphanumeric and -
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Parse alphanumeric strings and hep, "-".
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~zod/try=> (scan "7" alp)
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~~7
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~zod/try=> (scan "s" alp)
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~~s
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~zod/try=> (scan "123abc-" (star alp))
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"123abc-"
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------------------------------------------------------------------------
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<h3 id="++bet"><code>++bet</code></h3>
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Axis syntax `-`, `+`
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++ bet ;~(pose (cold 2 hep) (cold 3 lus)) :: axis syntax - +
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Parse the hep and lus axis syntax.
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~zod/try=> (scan "-" bet)
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2
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~zod/try=> (scan "+" bet)
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3
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------------------------------------------------------------------------
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<h3 id="++bin"><code>++bin</code></h3>
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Binary to atom
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++ bin (bass 2 (most gon but)) :: binary to atom
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Parse a tape of binary (0s and 1s) and produce its atomic
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representation.
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~zod/try=> (scan "0000" bin)
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0
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~zod/try=> (scan "0001" bin)
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1
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~zod/try=> (scan "0010" bin)
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2
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~zod/try=> (scan "100000001111" bin)
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2.063
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------------------------------------------------------------------------
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<h3 id="++but"><code>++but</code></h3>
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Binary digit
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++ but (cook |=(a=@ (sub a '0')) (shim '0' '1')) :: binary digit
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Parse a single binary digit.
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~zod/try=> (scan "0" but)
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0
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~zod/try=> (scan "1" but)
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1
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~zod/try=> (scan "01" but)
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! {1 2}
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! 'syntax-error'
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! exit
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~zod/try=> (scan "01" (star but))
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~[0 1]
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------------------------------------------------------------------------
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<h3 id="++cit"><code>++cit</code></h3>
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Octal digit
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++ cit (cook |=(a=@ (sub a '0')) (shim '0' '7')) :: octal digit
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Parse a single octal digit.
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~zod/try=> (scan "1" cit)
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1
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~zod/try=> (scan "7" cit)
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7
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~zod/try=> (scan "8" cit)
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! {1 1}
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! 'syntax-error'
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! exit
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~zod/try=> (scan "60" (star cit))
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~[6 0]
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------------------------------------------------------------------------
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<h3 id="++dem"><code>++dem</code></h3>
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Decimal to atom
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++ dem (bass 10 (most gon dit)) :: decimal to atom
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Parse a decimal number to an atom.
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~zod/try=> (scan "7" dem)
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7
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~zod/try=> (scan "42" dem)
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42
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~zod/try=> (scan "150000000" dem)
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150.000.000
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~zod/try=> (scan "12456" dem)
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12.456
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------------------------------------------------------------------------
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<h3 id="++dit"><code>++dit</code></h3>
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Decimal digit
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++ dit (cook |=(a=@ (sub a '0')) (shim '0' '9')) :: decimal digit
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Parse a single decimal digit.
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~zod/try=> (scan "7" dit)
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7
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~zod/try=> (scan "42" (star dit))
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~[4 2]
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~zod/try=> (scan "26000" (star dit))
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~[2 6 0 0 0]
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------------------------------------------------------------------------
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<h3 id="++gul"><code>++gul</code></h3>
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Axis syntax `<` or `>`
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++ gul ;~(pose (cold 2 gal) (cold 3 gar)) :: axis syntax < >
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Parse the axis gal and gar axis syntax.
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~zod/try=> (scan "<" gul)
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2
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~zod/try=> (scan ">" gul)
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3
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------------------------------------------------------------------------
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<h3 id="++gon"><code>++gon</code></h3>
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Long numbers
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++ gon ;~(pose ;~(plug bas gay fas) (easy ~)) :: long numbers \ /
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Parse long numbers - Numbers which wrap around the shell with the line
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break characters bas and fas.
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~zod/try=> (scan "\\/" gon)
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[~~~5c. ~ ~~~2f.]
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~zod/try=> (gon [[1 1] "\\/"])
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[p=[p=1 q=3] q=[~ u=[p=[~~~5c. ~ ~~~2f.] q=[p=[p=1 q=3] q=""]]]]
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------------------------------------------------------------------------
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<h3 id="++hex"><code>++hex</code></h3>
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Hex to atom
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++ hex (bass 16 (most gon hit)) :: hex to atom
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Parse any hexadecimal number to an atom.
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~zod/try=> (scan "a" hex)
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10
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~zod/try=> (scan "A" hex)
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10
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~zod/try=> (scan "2A" hex)
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42
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~zod/try=> (scan "1ee7" hex)
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7.911
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~zod/try=> (scan "1EE7" hex)
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7.911
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~zod/try=> (scan "1EE7F7" hex)
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2.025.463
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~zod/try=> `@ux`(scan "1EE7F7" hex)
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0x1e.e7f7
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------------------------------------------------------------------------
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<h3 id="++hig"><code>++hig</code></h3>
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Uppercase
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++ hig (shim 'A' 'Z') :: uppercase
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Parse a single uppercase letter.
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~zod/try=> (scan "G" hig)
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~~~47.
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~zod/try=> `cord`(scan "G" hig)
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'G'
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~zod/try=> (scan "ABCDEFGHIJKLMNOPQRSTUVWXYZ" (star hig))
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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~zod/try=> (hig [[1 1] "G"])
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[p=[p=1 q=2] q=[~ [p=~~~47. q=[p=[p=1 q=2] q=""]]]]
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------------------------------------------------------------------------
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<h3 id="++hit"><code>++hit</code></h3>
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Hex digits
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++ hit ;~ pose :: hex digits
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dit
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(cook |=(a=char (sub a 87)) (shim 'a' 'f'))
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(cook |=(a=char (sub a 55)) (shim 'A' 'F'))
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==
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Parse a single hexadecimal digit.
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~zod/try=> (scan "a" hit)
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10
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~zod/try=> (scan "A" hit)
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10
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~zod/try=> (hit [[1 1] "a"])
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[p=[p=1 q=2] q=[~ [p=10 q=[p=[p=1 q=2] q=""]]]]
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~zod/try=> (scan "2A" (star hit))
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~[2 10]
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------------------------------------------------------------------------
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<h3 id="++low"><code>++low</code></h3>
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Lowercase
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++ low (shim 'a' 'z') :: lowercase
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Parse a single lowercase letter.
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~zod/try=> (scan "g" low)
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~~g
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~zod/try=> `cord`(scan "g" low)
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'g'
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~zod/try=> (scan "abcdefghijklmnopqrstuvwxyz" (star low))
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"abcdefghijklmnopqrstuvwxyz"
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~zod/try=> (low [[1 1] "g"])
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[p=[p=1 q=2] q=[~ [p=~~g q=[p=[p=1 q=2] q=""]]]]
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------------------------------------------------------------------------
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<h3 id="++mes"><code>++mes</code></h3>
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Hexbyte
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++ mes %+ cook :: hexbyte
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|=([a=@ b=@] (add (mul 16 a) b))
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;~(plug hit hit)
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Parse a hexbyte.
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~zod/try=> (scan "2A" mes)
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42
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~zod/try=> (mes [[1 1] "2A"])
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[p=[p=1 q=3] q=[~ u=[p=42 q=[p=[p=1 q=3] q=""]]]]
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~zod/try=> (scan "42" mes)
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66
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------------------------------------------------------------------------
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<h3 id="++nix"><code>++nix</code></h3>
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Letters, `-`, and `_`
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++ nix (boss 256 (star ;~(pose aln cab))) ::
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Letters, `-`, and `_`
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~zod/try=> (scan "as_me" nix)
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q=435.626.668.897
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~zod/try=> `@t`(scan "as_me" nix)
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'as_me'
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------------------------------------------------------------------------
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<h3 id="++nud"><code>++nud</code></h3>
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Numeric
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++ nud (shim '0' '9') :: numeric
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Parse a numeric character - A number.
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~zod/try=> (scan "0" nud)
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~~0
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~zod/try=> (scan "7" nud)
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~~7
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~zod/try=> (nud [[1 1] "1"])
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[p=[p=1 q=2] q=[~ [p=~~1 q=[p=[p=1 q=2] q=""]]]]
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~zod/try=> (scan "0123456789" (star nud))
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"0123456789"
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------------------------------------------------------------------------
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<h3 id="++prn"><code>++prn</code></h3>
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Printable character
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++ prn ;~(less (just `@`127) (shim 32 256))
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Parse any printable character
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~zod/try=> (scan "h" prn)
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~~h
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~zod/try=> (scan "!" prn)
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~~~21.
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~zod/try=> (scan "\01" prn)
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! {1 1}
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! exit
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------------------------------------------------------------------------
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<h3 id="++qat"><code>++qat</code></h3>
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Chars in blockcord
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++ qat ;~ pose :: chars in blockcord
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prn
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;~(less ;~(plug (just `@`10) soqs) (just `@`10))
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==
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Parse character in cord block.
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~zod/try=> (scan "h" qat)
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~~h
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~zod/try=> (scan "!" qat)
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~~~21.
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~zod/try=> (scan "\0a" qat)
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~~~a.
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~zod/try=> (scan "\00" qat)
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! {1 1}
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! exit
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------------------------------------------------------------------------
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<h3 id="++qit"><code>++qit</code></h3>
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Chars in cord
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++ qit ;~ pose :: chars in a cord
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;~(less bas soq prn)
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;~(pfix bas ;~(pose bas soq mes)) :: escape chars
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==
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Parse an individual character to its cord atom representation.
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~zod/try=> (scan "%" qit)
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37
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~zod/try=> `@t`(scan "%" qit)
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'%'
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~zod/try=> (scan "0" qit)
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48
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~zod/try=> (scan "E" qit)
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69
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~zod/try=> (scan "a" qit)
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97
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~zod/try=> (scan "\\0a" qit)
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10
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~zod/try=> `@ux`(scan "\\0a" qit)
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0xa
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~zod/try=> (scan "cord" (star qit))
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~[99 111 114 100]
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------------------------------------------------------------------------
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<h3 id="++qut"><code>++qut</code></h3>
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Cord
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++ qut ;~ pose :: cord
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;~ less soqs
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(ifix [soq soq] (boss 256 (more gon qit)))
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==
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%- inde %+ ifix
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:- ;~ plug soqs
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;~(pose ;~(plug (plus ace) vul) (just '\0a'))
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==
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;~(plug (just '\0a') soqs)
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(boss 256 (star qat))
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==
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::
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Parse single-soq cord with `\{gap}/` anywhere in the middle, or
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triple-soq cord which must be in an indented block.
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~zod/try=> (scan "'cord'" qut)
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q=1.685.221.219
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~zod/try=> 'cord'
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'cord'
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~zod/try=> `@ud`'cord'
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1.685.221.219
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/~zod/try=> '''
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Heredoc isn't prohibited from containing quotes
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'''
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'Heredoc isn't prohibited from containing quotes'
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------------------------------------------------------------------------
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<h3 id="++soqs"><code>++soqs</code></h3>
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Delimiting `'''`
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++ soqs ;~(plug soq soq soq) :: delimiting '''
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Triple single quote
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~zod/try=> (scan "'''" soqs)
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[~~~27. ~~~27. ~~~27.]
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~zod/try=> (rash '"""' soqs)
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! {1 1}
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! exit
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------------------------------------------------------------------------
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<h3 id="++sym"><code>++sym</code></h3>
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Term
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++ sym
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%+ cook
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|=(a=tape (rap 3 ^-((list ,@) a)))
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;~(plug low (star ;~(pose nud low hep)))
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::
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A term: a letter(lowercase), followed by letters, numbers, or `-`.
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~zod/try=> (scan "sam-2" sym)
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215.510.507.891
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~zod/try=> `@t`(scan "sam-2" sym)
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'sam-2'
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~zod/try=> (scan "sym" sym)
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7.174.515
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------------------------------------------------------------------------
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<h3 id="++ven"><code>++ven</code></h3>
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`+>-` axis syntax
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++ ven ;~ (comp |=([a=@ b=@] (peg a b))) :: +>- axis syntax
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bet
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=+ hom=`?`|
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|= tub=nail
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^- (like axis)
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=+ vex=?:(hom (bet tub) (gul tub))
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?~ q.vex
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[p.tub [~ 1 tub]]
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=+ wag=$(p.tub p.vex, hom !hom, tub q.u.q.vex)
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?> ?=(^ q.wag)
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[p.wag [~ (peg p.u.q.vex p.u.q.wag) q.u.q.wag]]
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==
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Axis syntax parser
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~zod/arvo=/hoon/hoon> (scan "->+" ven)
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11
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~zod/arvo=/hoon/hoon> `@ub`(scan "->+" ven)
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0b1011
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~zod/arvo=/hoon/hoon> (peg (scan "->" ven) (scan "+" ven))
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11
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~zod/arvo=/hoon/hoon> ->+:[[1 2 [3 4]] 5]
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[3 4]
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------------------------------------------------------------------------
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<h3 id="++vit"><code>++vit</code></h3>
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Base64 digit
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++ vit :: base64 digit
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;~ pose
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(cook |=(a=@ (sub a 65)) (shim 'A' 'Z'))
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(cook |=(a=@ (sub a 71)) (shim 'a' 'z'))
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(cook |=(a=@ (add a 4)) (shim '0' '9'))
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(cold 62 (just '-'))
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(cold 63 (just '+'))
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==
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Terran base64
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~zod/arvo=/hoon/hoon> (scan "C" vit)
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2
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~zod/arvo=/hoon/hoon> (scan "c" vit)
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28
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~zod/arvo=/hoon/hoon> (scan "2" vit)
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54
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~zod/arvo=/hoon/hoon> (scan "-" vit)
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62
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