Module: Erubis::JavascriptGenerator

Includes:
Generator
Included in:
Ejavascript, PI::Ejavascript
Defined in:
lib/erubis/engine/ejavascript.rb

Instance Attribute Summary

Attributes included from Generator

#escapefunc

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Generator

#escaped_expr

Class Method Details

.supported_properties ⇒ Object

:nodoc:



17
18
19
20
21
22
 
# File 'lib/erubis/engine/ejavascript.rb', line 17

def self.supported_properties()   # :nodoc:
  list = []
  #list << [:indent,   '',       "indent spaces (ex. '  ')"]
  #list << [:buf,      '_buf',   "output buffer name"]
  return list
end

Instance Method Details

#add_expr_debug(src, code) ⇒ Object 



71
72
73
74
75
 
# File 'lib/erubis/engine/ejavascript.rb', line 71

def add_expr_debug(src, code)
  add_indent(src, @indent)
  code.strip!
  src << "alert(\"*** debug: #{code}=\"+(#{code}));"
end

#add_expr_escaped(src, code) ⇒ Object 



67
68
69
 
# File 'lib/erubis/engine/ejavascript.rb', line 67

def add_expr_escaped(src, code)
  add_expr_literal(src, escaped_expr(code))
end

#add_expr_literal(src, code) ⇒ Object 



61
62
63
64
65
 
# File 'lib/erubis/engine/ejavascript.rb', line 61

def add_expr_literal(src, code)
  add_indent(src, @indent)
  code.strip!
  src << "#{@buf}.push(#{code});"
end

#add_indent(src, indent) ⇒ Object 



40
41
42
 
# File 'lib/erubis/engine/ejavascript.rb', line 40

def add_indent(src, indent)
  src << (src.empty? || src[-1] == ?\n ? indent : ' ')
end

#add_postamble(src) ⇒ Object 



77
78
79
80
 
# File 'lib/erubis/engine/ejavascript.rb', line 77

def add_postamble(src)
  src << "\n" if src[-1] == ?;
  src << @indent << 'document.write(' << @buf << ".join(\"\"));\n"
end

#add_preamble(src) ⇒ Object 



31
32
33
 
# File 'lib/erubis/engine/ejavascript.rb', line 31

def add_preamble(src)
  src << "#{@indent}var #{@buf} = [];"
end

#add_stmt(src, code) ⇒ Object 



57
58
59
 
# File 'lib/erubis/engine/ejavascript.rb', line 57

def add_stmt(src, code)
  src << code
end

#add_text(src, text) ⇒ Object 



44
45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/erubis/engine/ejavascript.rb', line 44

def add_text(src, text)
  return if text.empty?
  add_indent(src, @indent)
  src << @buf << '.push("'
  s = escape_text(text)
  if s[-1] == ?\n
    s[-2, 2] = ''
    src << s << "\");\n"
  else
    src << s << "\");"
  end
end

#escape_text(text) ⇒ Object 



35
36
37
38
 
# File 'lib/erubis/engine/ejavascript.rb', line 35

def escape_text(text)
  @@table_ ||= { "\r"=>"\\r", "\n"=>"\\n\\\n", "\t"=>"\\t", '"'=>'\\"', "\\"=>"\\\\" }
  return text.gsub!(/[\r\n\t"\\]/) { |m| @@table_[m] } || text
end

#init_generator(properties = {}) ⇒ Object 



24
25
26
27
28
29
 
# File 'lib/erubis/engine/ejavascript.rb', line 24

def init_generator(properties={})
  super
  @escapefunc ||= 'escape'
  @indent = properties[:indent] || ''
  @buf = properties[:out] || '_buf'
end