JavaScript: Improved contextual keywords (#2713)
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diff --git a/components/prism-javascript.js b/components/prism-javascript.js
index 2b057bf..4ffee11 100644
--- a/components/prism-javascript.js
+++ b/components/prism-javascript.js
@@ -8,11 +8,11 @@ Prism.languages.javascript = Prism.languages.extend('clike', {
],
'keyword': [
{
- pattern: /((?:^|})\s*)(?:catch|finally)\b/,
+ pattern: /((?:^|})\s*)catch\b/,
lookbehind: true
},
{
- pattern: /(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|for|from|function|(?:get|set)(?=\s*[\[$\w\xA0-\uFFFF])|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
+ pattern: /(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally(?=\s*(?:\{|$))|for|from(?=\s*(?:['"]|$))|function|(?:get|set)(?=\s*(?:[\[$\w\xA0-\uFFFF]|$))|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
lookbehind: true
},
],
diff --git a/components/prism-javascript.min.js b/components/prism-javascript.min.js
index 4a170a4..101a051 100644
--- a/components/prism-javascript.min.js
+++ b/components/prism-javascript.min.js
@@ -1 +1 @@
-Prism.languages.javascript=Prism.languages.extend("clike",{"class-name":[Prism.languages.clike["class-name"],{pattern:/(^|[^$\w\xA0-\uFFFF])(?!\s)[_$A-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\.(?:prototype|constructor))/,lookbehind:!0}],keyword:[{pattern:/((?:^|})\s*)(?:catch|finally)\b/,lookbehind:!0},{pattern:/(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|for|from|function|(?:get|set)(?=\s*[\[$\w\xA0-\uFFFF])|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,lookbehind:!0}],function:/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*(?:\.\s*(?:apply|bind|call)\s*)?\()/,number:/\b(?:(?:0[xX](?:[\dA-Fa-f](?:_[\dA-Fa-f])?)+|0[bB](?:[01](?:_[01])?)+|0[oO](?:[0-7](?:_[0-7])?)+)n?|(?:\d(?:_\d)?)+n|NaN|Infinity)\b|(?:\b(?:\d(?:_\d)?)+\.?(?:\d(?:_\d)?)*|\B\.(?:\d(?:_\d)?)+)(?:[Ee][+-]?(?:\d(?:_\d)?)+)?/,operator:/--|\+\+|\*\*=?|=>|&&=?|\|\|=?|[!=]==|<<=?|>>>?=?|[-+*/%&|^!=<>]=?|\.{3}|\?\?=?|\?\.?|[~:]/}),Prism.languages.javascript["class-name"][0].pattern=/(\b(?:class|interface|extends|implements|instanceof|new)\s+)[\w.\\]+/,Prism.languages.insertBefore("javascript","keyword",{regex:{pattern:/((?:^|[^$\w\xA0-\uFFFF."'\])\s]|\b(?:return|yield))\s*)\/(?:\[(?:[^\]\\\r\n]|\\.)*]|\\.|[^/\\\[\r\n])+\/[gimyus]{0,6}(?=(?:\s|\/\*(?:[^*]|\*(?!\/))*\*\/)*(?:$|[\r\n,.;:})\]]|\/\/))/,lookbehind:!0,greedy:!0,inside:{"regex-source":{pattern:/^(\/)[\s\S]+(?=\/[a-z]*$)/,lookbehind:!0,alias:"language-regex",inside:Prism.languages.regex},"regex-flags":/[a-z]+$/,"regex-delimiter":/^\/|\/$/}},"function-variable":{pattern:/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*[=:]\s*(?:async\s*)?(?:\bfunction\b|(?:\((?:[^()]|\([^()]*\))*\)|(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/,alias:"function"},parameter:[{pattern:/(function(?:\s+(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)?\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\))/,lookbehind:!0,inside:Prism.languages.javascript},{pattern:/(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=>)/i,inside:Prism.languages.javascript},{pattern:/(\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*=>)/,lookbehind:!0,inside:Prism.languages.javascript},{pattern:/((?:\b|\s|^)(?!(?: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|undefined|var|void|while|with|yield)(?![$\w\xA0-\uFFFF]))(?:(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*\s*)\(\s*|\]\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*\{)/,lookbehind:!0,inside:Prism.languages.javascript}],constant:/\b[A-Z](?:[A-Z_]|\dx?)*\b/}),Prism.languages.insertBefore("javascript","string",{"template-string":{pattern:/`(?:\\[\s\S]|\${(?:[^{}]|{(?:[^{}]|{[^}]*})*})+}|(?!\${)[^\\`])*`/,greedy:!0,inside:{"template-punctuation":{pattern:/^`|`$/,alias:"string"},interpolation:{pattern:/((?:^|[^\\])(?:\\{2})*)\${(?:[^{}]|{(?:[^{}]|{[^}]*})*})+}/,lookbehind:!0,inside:{"interpolation-punctuation":{pattern:/^\${|}$/,alias:"punctuation"},rest:Prism.languages.javascript}},string:/[\s\S]+/}}}),Prism.languages.markup&&Prism.languages.markup.tag.addInlined("script","javascript"),Prism.languages.js=Prism.languages.javascript;
\ No newline at end of file
+Prism.languages.javascript=Prism.languages.extend("clike",{"class-name":[Prism.languages.clike["class-name"],{pattern:/(^|[^$\w\xA0-\uFFFF])(?!\s)[_$A-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\.(?:prototype|constructor))/,lookbehind:!0}],keyword:[{pattern:/((?:^|})\s*)catch\b/,lookbehind:!0},{pattern:/(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally(?=\s*(?:\{|$))|for|from(?=\s*(?:['"]|$))|function|(?:get|set)(?=\s*(?:[\[$\w\xA0-\uFFFF]|$))|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,lookbehind:!0}],function:/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*(?:\.\s*(?:apply|bind|call)\s*)?\()/,number:/\b(?:(?:0[xX](?:[\dA-Fa-f](?:_[\dA-Fa-f])?)+|0[bB](?:[01](?:_[01])?)+|0[oO](?:[0-7](?:_[0-7])?)+)n?|(?:\d(?:_\d)?)+n|NaN|Infinity)\b|(?:\b(?:\d(?:_\d)?)+\.?(?:\d(?:_\d)?)*|\B\.(?:\d(?:_\d)?)+)(?:[Ee][+-]?(?:\d(?:_\d)?)+)?/,operator:/--|\+\+|\*\*=?|=>|&&=?|\|\|=?|[!=]==|<<=?|>>>?=?|[-+*/%&|^!=<>]=?|\.{3}|\?\?=?|\?\.?|[~:]/}),Prism.languages.javascript["class-name"][0].pattern=/(\b(?:class|interface|extends|implements|instanceof|new)\s+)[\w.\\]+/,Prism.languages.insertBefore("javascript","keyword",{regex:{pattern:/((?:^|[^$\w\xA0-\uFFFF."'\])\s]|\b(?:return|yield))\s*)\/(?:\[(?:[^\]\\\r\n]|\\.)*]|\\.|[^/\\\[\r\n])+\/[gimyus]{0,6}(?=(?:\s|\/\*(?:[^*]|\*(?!\/))*\*\/)*(?:$|[\r\n,.;:})\]]|\/\/))/,lookbehind:!0,greedy:!0,inside:{"regex-source":{pattern:/^(\/)[\s\S]+(?=\/[a-z]*$)/,lookbehind:!0,alias:"language-regex",inside:Prism.languages.regex},"regex-flags":/[a-z]+$/,"regex-delimiter":/^\/|\/$/}},"function-variable":{pattern:/#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*[=:]\s*(?:async\s*)?(?:\bfunction\b|(?:\((?:[^()]|\([^()]*\))*\)|(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/,alias:"function"},parameter:[{pattern:/(function(?:\s+(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)?\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\))/,lookbehind:!0,inside:Prism.languages.javascript},{pattern:/(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=>)/i,inside:Prism.languages.javascript},{pattern:/(\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*=>)/,lookbehind:!0,inside:Prism.languages.javascript},{pattern:/((?:\b|\s|^)(?!(?: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|undefined|var|void|while|with|yield)(?![$\w\xA0-\uFFFF]))(?:(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*\s*)\(\s*|\]\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*\{)/,lookbehind:!0,inside:Prism.languages.javascript}],constant:/\b[A-Z](?:[A-Z_]|\dx?)*\b/}),Prism.languages.insertBefore("javascript","string",{"template-string":{pattern:/`(?:\\[\s\S]|\${(?:[^{}]|{(?:[^{}]|{[^}]*})*})+}|(?!\${)[^\\`])*`/,greedy:!0,inside:{"template-punctuation":{pattern:/^`|`$/,alias:"string"},interpolation:{pattern:/((?:^|[^\\])(?:\\{2})*)\${(?:[^{}]|{(?:[^{}]|{[^}]*})*})+}/,lookbehind:!0,inside:{"interpolation-punctuation":{pattern:/^\${|}$/,alias:"punctuation"},rest:Prism.languages.javascript}},string:/[\s\S]+/}}}),Prism.languages.markup&&Prism.languages.markup.tag.addInlined("script","javascript"),Prism.languages.js=Prism.languages.javascript;
\ No newline at end of file
diff --git a/prism.js b/prism.js
index fdc707a..cf200fb 100644
--- a/prism.js
+++ b/prism.js
@@ -1483,11 +1483,11 @@ Prism.languages.javascript = Prism.languages.extend('clike', {
],
'keyword': [
{
- pattern: /((?:^|})\s*)(?:catch|finally)\b/,
+ pattern: /((?:^|})\s*)catch\b/,
lookbehind: true
},
{
- pattern: /(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|for|from|function|(?:get|set)(?=\s*[\[$\w\xA0-\uFFFF])|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
+ pattern: /(^|[^.]|\.\.\.\s*)\b(?:as|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally(?=\s*(?:\{|$))|for|from(?=\s*(?:['"]|$))|function|(?:get|set)(?=\s*(?:[\[$\w\xA0-\uFFFF]|$))|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
lookbehind: true
},
],
diff --git a/tests/languages/javascript/keyword_feature.test b/tests/languages/javascript/keyword_feature.test
index c5ae92a..431af5b 100644
--- a/tests/languages/javascript/keyword_feature.test
+++ b/tests/languages/javascript/keyword_feature.test
@@ -1,27 +1,67 @@
-catch finally;
-async function;
-
-as; await; break; case;
-class; const; continue; debugger;
-default; delete; do; else; enum;
-export; extends; for;
-from; if; implements;
-import; in; instanceof; interface; let;
-new; null; of; package; private;
-protected; public; return; static;
-super; switch; this; throw; try;
-typeof; undefined; var; void; while;
-with; yield;
+as;
+await;
+break;
+case;
+class;
+const;
+continue;
+debugger;
+default;
+delete;
+do;
+else;
+enum;
+export;
+extends;
+for;
+if;
+implements;
+import;
+in;
+instanceof;
+interface;
+let;
+new;
+null;
+of;
+package;
+private;
+protected;
+public;
+return;
+static;
+super;
+switch;
+this;
+throw;
+try;
+typeof;
+undefined;
+var;
+void;
+while;
+with;
+yield;
-----------------------------------------------------
+// contextual keywords
-[
- ["keyword", "catch"],
- ["keyword", "finally"], ["punctuation", ";"],
+try {} catch {} finally {}
+try {} catch (e) {} finally {}
+async function (){}
+async a => {}
+async (a,b,c) => {}
+import {} from "foo"
+import {} from 'foo'
+class { get foo(){} set baz(){} get [value](){} }
- ["keyword", "async"],
- ["keyword", "function"], ["punctuation", ";"],
+// variables, not keywords
+
+const { async, from, to } = bar;
+promise.catch(foo).finally(bar);
+
+----------------------------------------------------
+[
["keyword", "as"], ["punctuation", ";"],
["keyword", "await"], ["punctuation", ";"],
["keyword", "break"], ["punctuation", ";"],
@@ -38,7 +78,6 @@ with; yield;
["keyword", "export"], ["punctuation", ";"],
["keyword", "extends"], ["punctuation", ";"],
["keyword", "for"], ["punctuation", ";"],
- ["keyword", "from"], ["punctuation", ";"],
["keyword", "if"], ["punctuation", ";"],
["keyword", "implements"], ["punctuation", ";"],
["keyword", "import"], ["punctuation", ";"],
@@ -66,7 +105,122 @@ with; yield;
["keyword", "void"], ["punctuation", ";"],
["keyword", "while"], ["punctuation", ";"],
["keyword", "with"], ["punctuation", ";"],
- ["keyword", "yield"], ["punctuation", ";"]
+ ["keyword", "yield"], ["punctuation", ";"],
+
+ ["comment", "// contextual keywords"],
+
+ ["keyword", "try"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "catch"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "finally"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+
+ ["keyword", "try"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "catch"],
+ ["punctuation", "("],
+ "e",
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "finally"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+
+ ["keyword", "async"],
+ ["keyword", "function"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+
+ ["keyword", "async"],
+ ["parameter", ["a"]],
+ ["operator", "=>"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+
+ ["keyword", "async"],
+ ["punctuation", "("],
+ ["parameter", [
+ "a",
+ ["punctuation", ","],
+ "b",
+ ["punctuation", ","],
+ "c"
+ ]],
+ ["punctuation", ")"],
+ ["operator", "=>"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+
+ ["keyword", "import"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "from"],
+ ["string", "\"foo\""],
+
+ ["keyword", "import"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "from"],
+ ["string", "'foo'"],
+
+ ["keyword", "class"],
+ ["punctuation", "{"],
+ ["keyword", "get"],
+ ["function", "foo"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "set"],
+ ["function", "baz"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["keyword", "get"],
+ ["punctuation", "["],
+ "value",
+ ["punctuation", "]"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+ ["punctuation", "}"],
+ ["punctuation", "}"],
+
+ ["comment", "// variables, not keywords"],
+
+ ["keyword", "const"],
+ ["punctuation", "{"],
+ " async",
+ ["punctuation", ","],
+ " from",
+ ["punctuation", ","],
+ " to ",
+ ["punctuation", "}"],
+ ["operator", "="],
+ " bar",
+ ["punctuation", ";"],
+
+ "\r\npromise",
+ ["punctuation", "."],
+ ["function", "catch"],
+ ["punctuation", "("],
+ "foo",
+ ["punctuation", ")"],
+ ["punctuation", "."],
+ ["function", "finally"],
+ ["punctuation", "("],
+ "bar",
+ ["punctuation", ")"],
+ ["punctuation", ";"]
]
----------------------------------------------------