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Add binary composers

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This commit is contained in:
alex 2022-04-30 19:12:24 +01:00
parent dcbe24d45c
commit e40bdad6c3
1 changed files with 29 additions and 23 deletions
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52
packages/core/pattern.mjs
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@ -599,23 +599,23 @@ export class Pattern {
return this._zoom(0, t)._slow(t);
}
struct(...binary_pats) {
// Re structure the pattern according to a binary pattern (false values are dropped)
const binary_pat = sequence(binary_pats);
return binary_pat
.fmap((b) => (val) => b ? val : undefined)
.appLeft(this)
._removeUndefineds();
}
// struct(...binary_pats) {
// // Re structure the pattern according to a binary pattern (false values are dropped)
// const binary_pat = sequence(binary_pats);
// return binary_pat
// .fmap((b) => (val) => b ? val : undefined)
// .appLeft(this)
// ._removeUndefineds();
// }
mask(...binary_pats) {
// Only let through parts of pattern corresponding to true values in the given binary pattern
const binary_pat = sequence(binary_pats);
return binary_pat
.fmap((b) => (val) => b ? val : undefined)
.appRight(this)
._removeUndefineds();
}
// mask(...binary_pats) {
// // Only let through parts of pattern corresponding to true values in the given binary pattern
// const binary_pat = sequence(binary_pats);
// return binary_pat
// .fmap((b) => (val) => b ? val : undefined)
// .appRight(this)
// ._removeUndefineds();
// }
_color(color) {
return this._withContext((context) => ({ ...context, color }));
@ -826,7 +826,7 @@ function _composeOp(a, b, func) {
const composers = {
set: (a, b) => b,
keep: (a, b) => a,
keepif: (a, b) => b ? a : undefined,
keepif: (a, b) => (b ? a : undefined),
add: (a, b) => a + b,
sub: (a, b) => a - b,
mul: (a, b) => a * b,
@ -865,23 +865,29 @@ for (const [what, op] of Object.entries(composers)) {
};
if (how === 'Squeeze') {
// support 'squeezeIn' longhand
Pattern.prototype[what + "SqueezeIn"] = Pattern.prototype[what + how];
Pattern.prototype[what + 'SqueezeIn'] = Pattern.prototype[what + how];
}
if (how === 'In') {
// default how to 'in', e.g. add == addIn
Pattern.prototype[what] = Pattern.prototype[what + how];
}
else {
} else {
// default what to 'set', e.g. squeeze = setSqueeze
if (what === 'set') {
Pattern.prototype[how.toLowerCase()] = Pattern.prototype[what + how];
}
}
}
}
}
Pattern.prototype.reset = Pattern.prototype.keepTrig;
Pattern.prototype.restart = Pattern.prototype.keepTrigZero;
// binary composers
Pattern.prototype.struct = Pattern.keepifOut;
Pattern.prototype.structAll = Pattern.keepOut;
Pattern.prototype.mask = Pattern.keepifIn;
Pattern.prototype.maskAll = Pattern.keepIn;
Pattern.prototype.reset = Pattern.prototype.keepifTrig;
Pattern.prototype.resetAll = Pattern.prototype.keepTrig;
Pattern.prototype.restart = Pattern.prototype.keepifTrigZero;
Pattern.prototype.restartAll = Pattern.prototype.keepTrigZero;
// methods of Pattern that get callable factories
Pattern.prototype.patternified = [