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Return early from functions
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This saves an extra 25% (on top of #77)
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@ForbesLindesay
ForbesLindesay committed Jan 18, 2017
1 parent 035c891 commit df12b17
Showing 1 changed file with 90 additions and 1 deletion.
91 changes: 90 additions & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,9 @@ Lexer.prototype = {
*/

blank: function() {
if (this.input[0] !== '\n') {
return;
}
var captures;
if (captures = /^\n[ \t]*\n/.exec(this.input)) {
this.consume(captures[0].length - 1);
Expand All @@ -300,6 +303,9 @@ Lexer.prototype = {
*/

comment: function() {
if (this.input[0] !== '/') {
return;
}
var captures;
if (captures = /^\/\/(-)?([^\n]*)/.exec(this.input)) {
this.consume(captures[0].length);
Expand All @@ -318,6 +324,9 @@ Lexer.prototype = {
*/

interpolation: function() {
if (this.input[0] !== '#') {
return;
}
if (/^#\{/.test(this.input)) {
var match = this.bracketExpression(1);
this.consume(match.end + 1);
Expand Down Expand Up @@ -356,6 +365,9 @@ Lexer.prototype = {
*/

filter: function(opts) {
if (this.input[0] !== ':') {
return;
}
var tok = this.scan(/^:([\w\-]+)/, 'filter');
var inInclude = opts && opts.inInclude;
if (tok) {
Expand All @@ -375,6 +387,9 @@ Lexer.prototype = {
*/

doctype: function() {
if (this.input[0] !== 'd') {
return;
}
var node = this.scanEndOfLine(/^doctype *([^\n]*)/, 'doctype');
if (node) {
this.tokens.push(node);
Expand All @@ -387,6 +402,9 @@ Lexer.prototype = {
*/

id: function() {
if (this.input[0] !== '#') {
return;
}
var tok = this.scan(/^#([\w-]+)/, 'id');
if (tok) {
this.tokens.push(tok);
Expand All @@ -403,6 +421,9 @@ Lexer.prototype = {
*/

className: function() {
if (this.input[0] !== '.') {
return;
}
var tok = this.scan(/^\.(-?-?[_a-z][_a-z0-9\-]*)/i, 'class');
if (tok) {
this.tokens.push(tok);
Expand Down Expand Up @@ -545,6 +566,9 @@ Lexer.prototype = {
},

textHtml: function () {
if (this.input[0] !== '<') {
return;
}
var tok = this.scan(/^(<[^\n]*)/, 'text-html');
if (tok) {
this.addText('text-html', tok.val);
Expand All @@ -557,6 +581,9 @@ Lexer.prototype = {
*/

dot: function() {
if (this.input[0] !== '.') {
return;
}
var tok;
if (tok = this.scanEndOfLine(/^\./, 'dot')) {
this.tokens.push(tok);
Expand All @@ -570,6 +597,9 @@ Lexer.prototype = {
*/

"extends": function() {
if (this.input[0] !== 'e') {
return;
}
var tok = this.scan(/^extends?(?= |$|\n)/, 'extends');
if (tok) {
this.tokens.push(tok);
Expand All @@ -588,6 +618,9 @@ Lexer.prototype = {
*/

prepend: function() {
if (this.input[0] !== 'b' && this.input[0] !== 'a') {
return;
}
var captures;
if (captures = /^(?:block +)?prepend +([^\n]+)/.exec(this.input)) {
var name = captures[1].trim();
Expand All @@ -610,6 +643,9 @@ Lexer.prototype = {
*/

append: function() {
if (this.input[0] !== 'b' && this.input[0] !== 'p') {
return;
}
var captures;
if (captures = /^(?:block +)?append +([^\n]+)/.exec(this.input)) {
var name = captures[1].trim();
Expand All @@ -632,6 +668,9 @@ Lexer.prototype = {
*/

block: function() {
if (this.input[0] !== 'b') {
return;
}
var captures;
if (captures = /^block +([^\n]+)/.exec(this.input)) {
var name = captures[1].trim();
Expand All @@ -654,6 +693,9 @@ Lexer.prototype = {
*/

mixinBlock: function() {
if (this.input[0] !== 'b') {
return;
}
var tok;
if (tok = this.scanEndOfLine(/^block/, 'mixin-block')) {
this.tokens.push(tok);
Expand All @@ -666,6 +708,9 @@ Lexer.prototype = {
*/

'yield': function() {
if (this.input[0] !== 'y') {
return;
}
var tok = this.scanEndOfLine(/^yield/, 'yield');
if (tok) {
this.tokens.push(tok);
Expand All @@ -678,6 +723,9 @@ Lexer.prototype = {
*/

include: function() {
if (this.input[0] !== 'i') {
return;
}
var tok = this.scan(/^include(?=:| |$|\n)/, 'include');
if (tok) {
this.tokens.push(tok);
Expand All @@ -703,6 +751,9 @@ Lexer.prototype = {
*/

path: function() {
if (this.input[0] !== ' ') {
return;
}
var tok = this.scanEndOfLine(/^ ([^\n]+)/, 'path');
if (tok && (tok.val = tok.val.trim())) {
this.tokens.push(tok);
Expand All @@ -715,6 +766,9 @@ Lexer.prototype = {
*/

"case": function() {
if (this.input[0] !== 'c') {
return;
}
var tok = this.scanEndOfLine(/^case +([^\n]+)/, 'case');
if (tok) {
this.incrementColumn(-tok.val.length);
Expand All @@ -733,6 +787,9 @@ Lexer.prototype = {
*/

when: function() {
if (this.input[0] !== 'w') {
return;
}
var tok = this.scanEndOfLine(/^when +([^:\n]+)/, 'when');
if (tok) {
var parser = characterParser(tok.val);
Expand Down Expand Up @@ -762,6 +819,9 @@ Lexer.prototype = {
*/

"default": function() {
if (this.input[0] !== 'd') {
return;
}
var tok = this.scanEndOfLine(/^default/, 'default');
if (tok) {
this.tokens.push(tok);
Expand All @@ -777,7 +837,9 @@ Lexer.prototype = {
*/

call: function(){

if (this.input[0] !== '+') {
return;
}
var tok, captures, increment;
if (captures = /^\+(\s*)(([-\w]+)|(#\{))/.exec(this.input)) {
// try to consume simple or interpolated call
Expand Down Expand Up @@ -825,6 +887,9 @@ Lexer.prototype = {
*/

mixin: function(){
if (this.input[0] !== 'm') {
return;
}
var captures;
if (captures = /^mixin +([-\w]+)(?: *\((.*)\))? */.exec(this.input)) {
this.consume(captures[0].length);
Expand All @@ -840,6 +905,9 @@ Lexer.prototype = {
*/

conditional: function() {
if (this.input[0] !== 'i' && this.input[0] !== 'u' && this.input[0] !== 'e') {
return;
}
var captures;
if (captures = /^(if|unless|else if|else)\b([^\n]*)/.exec(this.input)) {
this.consume(captures[0].length);
Expand Down Expand Up @@ -878,6 +946,9 @@ Lexer.prototype = {
*/

"while": function() {
if (this.input[0] !== 'w') {
return;
}
var captures;
if (captures = /^while +([^\n]+)/.exec(this.input)) {
this.consume(captures[0].length);
Expand All @@ -895,6 +966,9 @@ Lexer.prototype = {
*/

each: function() {
if (this.input[0] !== 'e' && this.input[0] !== 'f') {
return;
}
var captures;
if (captures = /^(?:each|for) +([a-zA-Z_$][\w$]*)(?: *, *([a-zA-Z_$][\w$]*))? * in *([^\n]+)/.exec(this.input)) {
this.consume(captures[0].length);
Expand Down Expand Up @@ -923,6 +997,9 @@ Lexer.prototype = {
*/

code: function() {
if (this.input[0] !== '!' && this.input[0] !== '=' && this.input[0] !== '-') {
return;
}
var captures;
if (captures = /^(!?=|-)[ \t]*([^\n]+)/.exec(this.input)) {
var flags = captures[1];
Expand Down Expand Up @@ -990,6 +1067,9 @@ Lexer.prototype = {
* Block code.
*/
blockCode: function() {
if (this.input[0] !== '-') {
return;
}
var tok
if (tok = this.scanEndOfLine(/^-/, 'blockcode')) {
this.tokens.push(tok);
Expand Down Expand Up @@ -1163,6 +1243,9 @@ Lexer.prototype = {
* &attributes block
*/
attributesBlock: function () {
if (this.input[0] !== '&') {
return;
}
if (/^&attributes\b/.test(this.input)) {
var consumed = 11;
this.consume(consumed);
Expand Down Expand Up @@ -1277,6 +1360,9 @@ Lexer.prototype = {
*/

slash: function() {
if (this.input[0] !== '/') {
return;
}
var tok = this.scan(/^\//, 'slash');
if (tok) {
this.tokens.push(tok);
Expand All @@ -1289,6 +1375,9 @@ Lexer.prototype = {
*/

colon: function() {
if (this.input[0] !== ':') {
return;
}
var tok = this.scan(/^: +/, ':');
if (tok) {
this.tokens.push(tok);
Expand Down

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