Interpreting expressions built out of a subset of spreadsheet functions.
Has a little Ruby twin, xel.rb.
// Xel.seval(code, context)
// where context is a mapping var_name -> var_value, and defaults to {}
Xel.eval("1 + 2")
// --> 3
Xel.eval(" = CASE(a<5000000, 0.6, a<10000000, 0.55, 0.45)", { a: 10000 })
// --> 0.6
Xel.eval("CASE(a<5000000, 0.6, a<10000000, 0.55, 0.45)", { a: 5_100_000 })
// --> 0.55Here are the eval tests, in the format code [ ⟶ context] ⟶ result
987 ⟶ 987
3,000,000 ⟶ 3_000_000
123.45 ⟶ 123.45
9,090.10 ⟶ 9_090.1
.123 ⟶ 0.123
-987 ⟶ -987
-3,000,000 ⟶ -3_000_000
-123.45 ⟶ -123.45
-9,090.10 ⟶ -9_090.10
-.123 ⟶ -0.123
"12" =~ "[a-z]" ⟶ false
"a" != "a" ⟶ false
"a" != "b" ⟶ true
"a" = "a" ⟶ true
"a" = "b" ⟶ false
"a" IN { 0, "a", 2 } ⟶ true
"a" IN { 0, "b", 2 } ⟶ false
"a" IN {} ⟶ false
"ab" =~ "[a-z]" ⟶ true
"b" IN a ⟶ {"a":["a","b","c"]} ⟶ true
"d" IN a ⟶ {"a":["a","b","c"]} ⟶ false
{ "a" } != { "a" } ⟶ false
{ "a" } != { "b" } ⟶ true
{ "a" } = { "a" } ⟶ true
{ "a" } = { "b" } ⟶ false
{ "a", "b" } != { "a" } ⟶ true
{ "a", "b" } != { "a", "b" } ⟶ false
{ "a", "b" } = { "a" } ⟶ false
{ "a", "b" } = { "a", "b" } ⟶ true
{ 1, "a", "b", "c" } ⟶ [ 1, "a", "b", "c" ]
{ 1, 2 } + { "a", "b" } ⟶ [ 1, 2, "a", "b" ]
{ { "a", "b" }, { "c", "de" } } ⟶ [ [ "a", "b" ], [ "c", "de" ] ]
{ { "a", 1 }, { "c", 2 } } ⟶ [ [ "a", 1 ], [ "c", 2 ] ]
{ "a", "b", "c" } ⟶ [ "a", "b", "c" ]
{ "a","b" } ⟶ [ "a", "b" ]
LET(price, 100, count, 3, count * price) ⟶ 300
LET(price, 95, count, 3, 12, count * price) ⟶ 285
LET(price, 13, LOWER("COUNT"), 3, count * price) ⟶ 39
LET(l, LAMBDA(a, b, a + b), l(2, 3)) ⟶ 5
LET(_l, LAMBDA(a, b, a * b), _l(2, 3)) ⟶ 6
ROUND(3.14159) ⟶ 3
ROUND(3.14159, 0) ⟶ 3
ROUND(3.14159, 2) ⟶ 3.14
ROUND(157, -1) ⟶ 160
ROUND(157, -2) ⟶ 200
ROUND(2.678, 1) ⟶ 2.7
MROUND(51, 3) ⟶ 51
MROUND(50, 7) ⟶ 49
MROUND(50, 3) ⟶ 51
MROUND(10, 3) ⟶ 9
MROUND(10, -3) ⟶ nil
MROUND(-10, 3) ⟶ nil
MROUND(-10, -3) ⟶ -9
MROUND(0, 3) ⟶ 0
MROUND(10, 0) ⟶ nil
MROUND(10.5, 0.3) ⟶ 10.5
MROUND(5, 3) ⟶ 6
MROUND(4, 3) ⟶ 3
MROUND(10.5678, 0.05) ⟶ 10.55
# need MROUND2 for the job, but why again?
#
MROUND2(51, 3) ⟶ 51
MROUND2(50, 7) ⟶ 49
MROUND2(50, 3) ⟶ 51
MROUND2(10, 3) ⟶ 9
MROUND2(10, -3) ⟶ nil
MROUND2(-10, 3) ⟶ nil
MROUND2(-10, -3) ⟶ -9
MROUND2(0, 3) ⟶ 0
MROUND2(10, 0) ⟶ nil
MROUND2(10.5, 0.3) ⟶ 10.5
MROUND2(5, 3) ⟶ 6
MROUND2(4, 3) ⟶ 3
MROUND2(10.5678, 0.05) ⟶ 10.55
CEILING(7, 1) ⟶ 7
CEILING(7) ⟶ 7
CEILING(7.05, 1) ⟶ 8
CEILING(7.05) ⟶ 8
CEILING(7, 5) ⟶ 10
CEILING(49.25, 5) ⟶ 50
CEILING(501, 100) ⟶ 600
CEILING(550, 100) ⟶ 600
CEILING(10.1, 0.25) ⟶ 10.25
FLOOR(7, 5) ⟶ 5
FLOOR(49.25) ⟶ 49
FLOOR(49.25, 1) ⟶ 49
FLOOR(550, 100) ⟶ 500
FLOOR(10.1, 0.25) ⟶ 10
TRUNC(8.9) ⟶ 8
TRUNC(8.9, 0) ⟶ 8
TRUNC(3.14159, 2) ⟶ 3.14
TRUNC(2.678, 1) ⟶ 2.6
"ab\"cd'ef" ⟶ "ab\"cd'ef"
'ab"cd\'ef' ⟶ "ab\"cd'ef"
0.45 * we_c - 0.15 * it_c + 0.15 * sm_c + 0.25 * gp_c ⟶ \
{:we_c=>1.1, :it_c=>2.2, :sm_c=>3.3, :gp_c=>4.4} ⟶ 1.76
1 + "a" ⟶ "1a"
1 + 2 ⟶ 3
1 + a.b.c ⟶ {:a=>{:b=>{:c=>66}}} ⟶ 67
1 + v0 ⟶ {:v0=>70} ⟶ 71
1 - -2 ⟶ 3
1 - 2 ⟶ -1
1 / 5 ⟶ 0.2
"a" & "bc" ⟶ "abc"
1 & 1 ⟶ "11"
"ab" & c & d & "ef" ⟶ {:c=>"c"} ⟶ "abcef"
1 < 2 ⟶ true
1 <= 2 ⟶ true
1 IN a ⟶ {:a=>[0, 1, 2]} ⟶ true
1 IN { 0, 1 } ⟶ true
1.0 / 5 ⟶ 0.2
2 != 3 ⟶ true
2 <= 2 ⟶ true
2 >= 2 ⟶ true
3 = 3 ⟶ true
3 >= 2 ⟶ true
AND(TRUE()) ⟶ true
AND(TRUE(), TRUE()) ⟶ true
CASE(AND(a > 99, 2 > 1), 2, a > 9, 1, -1) ⟶ {:a=>100} ⟶ 2
CASE(a > 99, 2, a > 9, 1, -1) ⟶ {:a=>100} ⟶ 2
CASE(eb, "&", 10, "g", 11, "a", 12, 13) ⟶ {:eb=>"nada"} ⟶ 13
COUNT(a) ⟶ { a: [] } ⟶ 0
COUNT(a) ⟶ { a: ["a", true] } ⟶ 0
COUNT(a) ⟶ { a: [1, "a", 2, 3, false] } ⟶ 3
COUNT(a) ⟶ { a: [1, 2, 3] } ⟶ 3
COUNTA(a) ⟶ { a: [] } ⟶ 0
COUNTA(a) ⟶ { a: [1, 2, 3] } ⟶ 3
COUNTA(a) ⟶ { a: ["blue", 1, 2, 3, true] } ⟶ 5
HAS(a, "b") ⟶ {:a=>["a", "b", "c"]} ⟶ true
HAS(a, 1) ⟶ {:a=>[0, 1, 2]} ⟶ true
IF(FALSE(), 1, 2) ⟶ 2
IF(TRUE(), 1, 2) ⟶ 1
IF(f, 1, 2) ⟶ {:f=>false} ⟶ 2
IF(t, 1, 2) ⟶ {:t=>true} ⟶ 1
INDEX(a, -1) ⟶ {:a=>[0, 1, 2, "trois"]} ⟶ "trois"
INDEX(a, -2) ⟶ {:a=>[0, 1, 2, "trois"]} ⟶ 2
INDEX(a, 1) ⟶ {:a=>[0, 1, 2]} ⟶ 0
INDEX(a, 2) ⟶ {:a=>[0, 1, 2]} ⟶ 1
INDEX(a, COUNTA(a)) ⟶ {:a=>[0, "two"]} ⟶ "two"
INDEX({ 'ab', 'cd', 'ef' }, -2) ⟶ "cd"
ISBLANK(a) ⟶ {:a=>""} ⟶ true
ISBLANK(a) ⟶ {} ⟶ true
ISNUMBER(123) ⟶ true
ISNUMBER(123.12) ⟶ true
LN(3044.31) ⟶ 8.02
LN(a) ⟶ {:a=>[3044.31, 3047.12]} ⟶ [8.02, 8.02]
LN({ 3044.31, 3047.12 }) ⟶ [8.02, 8.02]
MATCH("b", a, 0) ⟶ {:a=>["a", "b", "c"]} ⟶ 1
MATCH("d", a, 0) ⟶ {:a=>["a", "b"]} ⟶ -1
MATCH(1, a, 0) ⟶ {:a=>[0, 1, 2]} ⟶ 1
MAX(-1, -2, "a", -3) ⟶ -1
MAX(-1, -2, -3) ⟶ -1
MAX(1, 2, 3) ⟶ 3
MIN(-1, -2, "a", -3) ⟶ -1
MIN(-1, -2, -3) ⟶ -3
MIN(1, 2, 3) ⟶ 1
NOT(FALSE()) ⟶ true
OR(1 = 2, 2 = 2) ⟶ true
OR(TRUE(), FALSE()) ⟶ true
PRODUCT(2, 3, 4) ⟶ 24
PRODUCT({ 2, 3, 4 }) ⟶ 24
PRODUCT({ 2, 3, 4 }, 2) ⟶ 48
PRODUCT({ 2, 3, 4 }, a, 2) ⟶ {:a=>[0.5, 0.5]} ⟶ 12
PROPER("alpha bravo charly") ⟶ "Alpha Bravo Charly"
SORT({ 1, "aa", 7, 2 }, 1, -1) ⟶ ["aa", 7, 2, 1]
SORT({ 1, 3, 2 }) ⟶ [1, 2, 3]
SORT({ 1, 3, 2 }, 1, -1) ⟶ [3, 2, 1]
SQRT(260) ⟶ 16.1245
SQRT(a) ⟶ {:a=>[260, 81]} ⟶ [16.1245, 9]
SQRT({ 260, 81 }) ⟶ [16.1245, 9]
STDEV(a) ⟶ {:a=>[10, 11]} ⟶ 0.71
SUM(2, 3, 4) ⟶ 9
SUM({ 2, 3, 4 }) ⟶ 9
SUM({ 2, 3, 4 }, 2) ⟶ 11
SUM({ 2, 3, 4 }, a, 2) ⟶ {:a=>[0.5, 0.5]} ⟶ 12
TRUE() ⟶ true
UNIQUE(a) ⟶ {:a=>[1, 2, 1, 1, 2, 3]} ⟶ [1, 2, 3]
UNIQUE({ 1, 1 }) ⟶ [1]
UPPER("alpha bravo charly") ⟶ "ALPHA BRAVO CHARLY"
LOWER("ALPHA BRAVO Charly") ⟶ "alpha bravo charly"
a != "" ⟶ {:a=>"abc"} ⟶ true
LAMBDA(a, b, a + b) ⟶ {}
KALL(LAMBDA(a, b, a + b), 7, -3) ⟶ 4
KALL(LAMBDA(a, b, a + b), 7, -2, 1) ⟶ 5
MAP({ 2, 3, 4 }, LAMBDA(a, 2 * a)) ⟶ [4, 6, 8]
REDUCE(0, { 2, 3, 4 }, LAMBDA(a, e, a + e)) ⟶ 9
REDUCE({ 2, 3, 5 }, LAMBDA(a, e, a + e)) ⟶ 10
ORV('', '', 1) ⟶ 1
ORV('', b, a, 3) ⟶ {:a=>2} ⟶ 2
TEXTJOIN("/", TRUE(), "a", "b") ⟶ "a/b"
TEXTJOIN(", ", TRUE(), a, "zz") ⟶ {:a=>["ab", "cd", "ef1"]} ⟶ "ab, cd, ef1, zz"
TEXTJOIN(", ", TRUE(), a, "zz") ⟶ {:a=>["ab", "", "ef1"]} ⟶ "ab, ef1, zz"
TEXTJOIN(", ", FALSE(), a, "zz") ⟶ {:a=>["ab", "", "ef1"]} ⟶ "ab, , ef1, zz"
D() ⟶ \
{}
D('alpha') ⟶ \
{ alpha: nil }
D('alpha', 'bravo') ⟶ \
{ alpha: 'bravo' }
D('a', 1, 'b', 'deux', 'charly', { 1, 'deux' }) ⟶ \
{ a: 1, b: 'deux', charly: [ 1, 'deux' ] }
See core spec at spec/_xel.rb.
Callback methods can be added to Xel.callbacks directly:
var a = [];
Xel.callbacks.push(function(tree, context, ret) {
a.push([ tree, context, ret ]);
});
Xel.eval("12 + a", { a: 34 });
Xel.callbacks.pop(); // remove last callback ;-)
// a -->
[
[ [ 'plus', [ 'num', '12' ], [ 'var', 'a' ] ], { a: 34 } ],
[ [ 'num', '12' ], { a: 34 } ],
[ [ 'num', '12' ], { a: 34 }, 12 ],
[ [ 'var', 'a' ], { a: 34 } ],
[ [ 'var', 'a' ], { a: 34 }, 34 ],
[ [ 'plus', [ 'num', '12' ], [ 'var', 'a' ] ], { a: 34 }, 46 ]
]Callbacks may also be added more transiently by providing a _callbacks array in the eval context:
var a = [];
var cb = function(tree, context, ret) { a.push([ tree, ret ]); };
var ctx = { a: 35, _callbacks: [ cb ] };
Xel.eval("12 + a", ctx);
// a -->
[
[ [ 'plus', [ 'num', '12' ], [ 'var', 'a' ] ] ],
[ [ 'num', '12' ] ],
[ [ 'num', '12' ], 12 ],
[ [ 'var', 'a' ] ],
[ [ 'var', 'a' ], 35 ],
[ [ 'plus', [ 'num', '12' ], [ 'var', 'a' ] ], 47 ]
]<script src="https://cdn.jsdelivr.net/gh/jmettraux/[email protected]/spec/www/jaabro-1.4.1.js"></script>
<script src="https://cdn.jsdelivr.net/gh/jmettraux/[email protected]/src/xel.js"></script>MIT, see LICENSE.txt