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JS: Updated catch and finally #1527

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merged 4 commits into from
Aug 19, 2018
Merged

JS: Updated catch and finally #1527

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606691b
JS: Updated catch and finally
RunDevelopment Aug 16, 2018
b1b5667
Resolved merge conflict
Aug 18, 2018
6156bf4
JS: Add test for try-catch
Aug 19, 2018
3f8eedb
Simplified test.
Aug 19, 2018
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10 changes: 9 additions & 1 deletion components/prism-javascript.js
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Original file line number Diff line number Diff line change
@@ -1,11 +1,19 @@
Prism.languages.javascript = Prism.languages.extend('clike', {
'keyword': /\b(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
'keyword': [
{
pattern: /(^|}\s*)(?:catch|finally)\b/,
lookbehind: true
},
/\b(?:as|async|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/
],
'number': /\b(?:0[xX][\dA-Fa-f]+|0[bB][01]+|0[oO][0-7]+|NaN|Infinity)\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,
// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
'function': /[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*\()/i,
'operator': /-[-=]?|\+[+=]?|!=?=?|<<?=?|>>?>?=?|=(?:==?|>)?|&[&=]?|\|[|=]?|\*\*?=?|\/=?|~|\^=?|%=?|\?|\.{3}/
});

Prism.languages.javascript['class-name'].pattern = /(\b(?:class|interface|extends|implements|instanceof|new)\s+)[\w.\\]+/
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What's the story with this line in this PR?

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@RunDevelopment RunDevelopment Aug 19, 2018 •
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This line changes the class-name pattern to remove catch to no longer highlight the exception variable as a class name. (I added a new test for that)
trait was also removed, because this isn't a keyword in JS. (I forgot to mention it)

I didn't overwrite class-name in extend because it would have required more code to do so. (lookbehind and inside)
Or should I do it anyway for better readability?

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No, I think this is fine. Maybe a comment would be helpful?

Could we also get a test for promise().catch().finally() to make sure they're caught as functions?

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Wait, we have that already, my bad.


Prism.languages.insertBefore('javascript', 'keyword', {
'regex': {
pattern: /((?:^|[^$\w\xA0-\uFFFF."'\])\s])\s*)\/(\[[^\]\r\n]+]|\\.|[^/\\\[\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})\]]))/,
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2 changes: 1 addition & 1 deletion components/prism-javascript.min.js
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10 changes: 9 additions & 1 deletion prism.js
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Original file line number Diff line number Diff line change
Expand Up @@ -725,13 +725,21 @@ Prism.languages.clike = {
********************************************** */

Prism.languages.javascript = Prism.languages.extend('clike', {
'keyword': /\b(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
'keyword': [
{
pattern: /(^|}\s*)(?:catch|finally)\b/,
lookbehind: true
},
/\b(?:as|async|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/
],
'number': /\b(?:0[xX][\dA-Fa-f]+|0[bB][01]+|0[oO][0-7]+|NaN|Infinity)\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,
// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
'function': /[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*\()/i,
'operator': /-[-=]?|\+[+=]?|!=?=?|<<?=?|>>?>?=?|=(?:==?|>)?|&[&=]?|\|[|=]?|\*\*?=?|\/=?|~|\^=?|%=?|\?|\.{3}/
});

Prism.languages.javascript['class-name'].pattern = /(\b(?:class|interface|extends|implements|instanceof|new)\s+)[\w.\\]+/

Prism.languages.insertBefore('javascript', 'keyword', {
'regex': {
pattern: /((?:^|[^$\w\xA0-\uFFFF."'\])\s])\s*)\/(\[[^\]\r\n]+]|\\.|[^/\\\[\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})\]]))/,
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35 changes: 35 additions & 0 deletions tests/languages/javascript/issue1526.test
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
fetch('some-resource.json')
.then(response => response.json())
.catch(console.error);

----------------------------------------------------

[
["function", "fetch"],
["punctuation", "("],
["string", "'some-resource.json'"],
["punctuation", ")"],
["punctuation", "."],
["function", "then"],
["punctuation", "("],
"response ",
["operator", "=>"],
" response",
["punctuation", "."],
["function", "json"],
["punctuation", "("],
["punctuation", ")"],
["punctuation", ")"],
["punctuation", "."],
["function", "catch"],
["punctuation", "("],
"console",
["punctuation", "."],
"error",
["punctuation", ")"],
["punctuation", ";"]
]

----------------------------------------------------

Checks for catch function which is not a keyword. See #1526
19 changes: 11 additions & 8 deletions tests/languages/javascript/keyword_feature.test
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Original file line number Diff line number Diff line change
@@ -1,15 +1,17 @@
as; async; await; break; case;
catch; class; const; continue; debugger;
class; const; continue; debugger;
default; delete; do; else; enum;
export; extends; finally; for;
export; extends; for;
from; function; get; if; implements;
import; in; instanceof; interface; let;
new; null; of; package; private;
protected; public; return; set; static;
super; switch; this; throw;
try; typeof; var; void; while;
typeof; var; void; while;
with; yield;

try {} catch (e) {} finally {}

----------------------------------------------------

[
Expand All @@ -18,7 +20,6 @@ with; yield;
["keyword", "await"], ["punctuation", ";"],
["keyword", "break"], ["punctuation", ";"],
["keyword", "case"], ["punctuation", ";"],
["keyword", "catch"], ["punctuation", ";"],
["keyword", "class"], ["punctuation", ";"],
["keyword", "const"], ["punctuation", ";"],
["keyword", "continue"], ["punctuation", ";"],
Expand All @@ -30,7 +31,6 @@ with; yield;
["keyword", "enum"], ["punctuation", ";"],
["keyword", "export"], ["punctuation", ";"],
["keyword", "extends"], ["punctuation", ";"],
["keyword", "finally"], ["punctuation", ";"],
["keyword", "for"], ["punctuation", ";"],
["keyword", "from"], ["punctuation", ";"],
["keyword", "function"], ["punctuation", ";"],
Expand All @@ -56,15 +56,18 @@ with; yield;
["keyword", "switch"], ["punctuation", ";"],
["keyword", "this"], ["punctuation", ";"],
["keyword", "throw"], ["punctuation", ";"],
["keyword", "try"], ["punctuation", ";"],
["keyword", "typeof"], ["punctuation", ";"],
["keyword", "var"], ["punctuation", ";"],
["keyword", "void"], ["punctuation", ";"],
["keyword", "while"], ["punctuation", ";"],
["keyword", "with"], ["punctuation", ";"],
["keyword", "yield"], ["punctuation", ";"]
["keyword", "yield"], ["punctuation", ";"],

["keyword", "try"], ["punctuation", "{"], ["punctuation", "}"],
["keyword", "catch"], ["punctuation", "("], "e", ["punctuation", ")"], ["punctuation", "{"], ["punctuation", "}"],
["keyword", "finally"], ["punctuation", "{"], ["punctuation", "}"]
]

----------------------------------------------------

Checks for all keywords.
Checks for all keywords.