parsers.coffee
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# Rivets.KeypathParser
# --------------------
# Parser and tokenizer for keypaths in binding declarations.
class Rivets.KeypathParser
# Parses the keypath and returns a set of adapter interface + path tokens.
@parse: (keypath, interfaces, root) ->
tokens = []
current = {interface: root, path: ''}
for index in [0...keypath.length] by 1
char = keypath.charAt index
if char in interfaces
tokens.push current
current = {interface: char, path: ''}
else
current.path += char
tokens.push current
tokens
# Rivets.TextTemplateParser
# -------------------------
# Rivets.js text template parser and tokenizer for mustache-style text content
# binding declarations.
class Rivets.TextTemplateParser
@types:
text: 0
binding: 1
# Parses the template and returns a set of tokens, separating static portions
# of text from binding declarations.
@parse: (template, delimiters) ->
tokens = []
length = template.length
index = 0
lastIndex = 0
while lastIndex < length
index = template.indexOf delimiters[0], lastIndex
if index < 0
tokens.push type: @types.text, value: template.slice lastIndex
break
else
if index > 0 and lastIndex < index
tokens.push type: @types.text, value: template.slice lastIndex, index
lastIndex = index + delimiters[0].length
index = template.indexOf delimiters[1], lastIndex
if index < 0
substring = template.slice lastIndex - delimiters[1].length
lastToken = tokens[tokens.length - 1]
if lastToken?.type is @types.text
lastToken.value += substring
else
tokens.push type: @types.text, value: substring
break
value = template.slice(lastIndex, index).trim()
tokens.push type: @types.binding, value: value
lastIndex = index + delimiters[1].length
tokens