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Adding documentation to repeat.js and some logic simplification

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This commit is contained in:
Jeff Avallone 2015-04-23 19:31:36 -04:00
parent 6beeddb83a
commit c6af61659f
1 changed files with 19 additions and 14 deletions
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33
src/js/parser/javascript/repeat.js
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@ -1,3 +1,7 @@
// Repeat nodes are for the various repetition syntaxes (`a*`, `a+`, `a?`, and
// `a{1,3}`). It is not rendered directly, but contains data used for the
// rendering of [MatchFragment](./match_fragment.html) nodes.
function formatTimes(times) { function formatTimes(times) {
if (times === 1) { if (times === 1) {
return 'once'; return 'once';
@ -8,32 +12,33 @@ function formatTimes(times) {
export default { export default {
definedProperties: { definedProperties: {
// Translation to apply to content to be repeated to account for the loop
// and skip lines.
contentPosition: { contentPosition: {
get: function() { get: function() {
var x = 0, y = 0; var matrix = Snap.matrix();
if (this.hasLoop) {
x = 10;
}
if (this.hasSkip) { if (this.hasSkip) {
y = 10; return matrix.translate(15, 10);
x = 15; } else if (this.hasLoop) {
return matrix.translate(10, 0);
} else {
return matrix.translate(0, 0);
} }
return Snap.matrix().translate(x, y);
} }
}, },
// Label to place of loop path to indicate the number of times that path
// may be followed.
label: { label: {
get: function() { get: function() {
if (this.minimum >= 2 && this.maximum === -1) {
return `${this.minimum - 1}+ times`;
} else if (this.minimum <= 1 && this.maximum >= 2) {
return `at most ${formatTimes(this.maximum - 1)}`;
} else if (this.minimum >= 2 && this.maximum >= 2) {
if (this.minimum === this.maximum) { if (this.minimum === this.maximum) {
return formatTimes(this.minimum - 1); return formatTimes(this.minimum - 1);
} else if (this.minimum <= 1 && this.maximum >= 2) {
return `at most ${formatTimes(this.maximum - 1)}`;
} else if (this.minimum >= 2) {
if (this.maximum === -1) {
return `${this.minimum - 1}+ times`;
} else { } else {
return `${this.minimum - 1}\u2026${formatTimes(this.maximum - 1)}`; return `${this.minimum - 1}\u2026${formatTimes(this.maximum - 1)}`;
} }