Note that Chinstrap has no dependencies in the compiler.
module.exports = ( ->
class Chinstrap
Value: open
The opener is the string pattern that marks the beginning of a code block. Default is {{
Value: close
The closer is the string pattern taht marks the end of a code block. Default is }}.
open: "{{"
close: "}}"
Methods: setOpen and setClose
Two methods to override the opne and close values.
setOpen: (@open) ->
setClose: (@close) ->
Method: merge
The main method to call when using Chinstrap.
Receives three arguments:
merge: (template, data, returnSource) ->
returnSource = typeof returnSource isnt 'undefined' and returnSource
template = @render(template)
fn = new Function("obj", template)
if returnSource then str else fn(data)
Method: render (String str)
Workhorse method; converts the template into a function.
render: (str) ->
str = @stripWhiteSpace(str)
str = @replaceOpenChars(str)
str = str.replace(/((^|\}\})[^\t]*)'/g, "$1\r")
str = @replaceQmarkWithIfOpen(str)
str = str.replace(/\t\s?\@\=(.*?)\}\}/g, "\titerator=$1;\n}}")
str = str.replace(/\t\s?WHILE(.*?)\}\}/g, "\twhile ($1) {\n}}")
str = str.replace(/\t\s?\/WHILE(.*?)\}\}/g, "\t}\n}}")
str = str.replace(/\t\s?FOR(.*?)\}\}/g, "\tfor ($1) {\n}}")
str = str.replace(/\t\s?%(.*?)\}\}/g,"', this.merge($1), '")
str = str.replace(/\t\s?\/FOR(.*?)\}\}/g, "\t}\n}}")
str = str.replace(/\t\s?(IF|\?)(.*?)\}\}/g, "\tif (value($2)) {\n}}")
str = str.replace(/\t\s?\/(IF|\?)(.*?)\}\}/g, "\t}\n}}")
str = str.replace(/\t\s?(\-\?|ELSEIF)(.*?)\}\}/g, "\t} else if (value($2)) {\n}}")
str = str.replace(/\t\s?(\-|ELSE)(.*?)\}\}/g, "\t} else {\n}}")
str = str.replace(/\@\@/g, "iterator")
str = str.replace(/\@/g, "iterator.")
str = str.split("\t").join("');\n")
str = str.split(@close).join("p.push('")
str = str.split("\r").join("\\'")
str = "\nvar p=[],iterator = {},print=function(){p.push.apply(p,arguments);},value = function(val){if (typeof val == 'function') {return val.apply(iterator);} else {return val;}};\nwith(config){\np.push('" + str + "');\n}\nreturn p.join('');\n"Method: stripWhiteSpace
The conceit of the Resig system is to remove lots of white space characters, and then use those characters as drop-ins for action items.
So step one is to remove tabs and returns, and replace them with a blank space.
stripWhiteSpace: (str) -> str.replace(/[\r\t\n]/g, " ")
Method: replaceOpenChars
Chinstrap executes snippets of code that live between an open and close character. The default opener is "{{".
Now replace the open character (default "{{") with a tab character ("\t"). We'll use this to put the function back together later.
replaceOpenChars: (str) -> str.split(@open).join("\t")
Replace ? with if statement
You can write an if statement in two alternate styles.
replaceQmarkWithIfOpen: (str) -> str.replace(/\t\s?=(.*?)\}\}/g, "',value($1),'")
compileWhileOpen: (str) ->
compileWhileClose: (str) ->
compileForOpen: (str) ->
compileForClose: (str) ->
module.exports = new Chinstrap()
)()