import color, mode
from lex import Grammar, PatternRule, RegionRule
import mode.xml
import mode.html
import mode.javascript
import mode.css
from mode.perl import StringGrammar, PerlGrammar

class PerlDirectiveGrammar(Grammar):
    rules = [PatternRule('tt.perl', '(?:PERL|RAWPERL|END)(?![A-Z_])')]

class DirectiveGrammar(Grammar):
    rules = [
        PatternRule('tt.keyword', r'(?:BLOCK|CALL|CASE|CATCH|CLEAR|DEBUG|DEFAULT|FINAL|FILTER|FOREACH|ELSIF|ELSE|END|GET|IF|INCLUDE|INSERT|IN|LAST|MACRO|META|NEXT|PERL|PROCESS|RAWPERL|RETURN|SET|STOP|SWITCH|TAGS|THROW|TRY|UNLESS|USE|WHILE|WRAPPER)(?![A-Z_])'),
        PatternRule('attribute', '[a-zA-Z_][a-zA-Z0-9_]*(?= *=)'),
        RegionRule('string', '"', StringGrammar, '"'),
        RegionRule('string', "'", StringGrammar, "'"),
    ]

crule = RegionRule('comment', r'\[\%#', Grammar, r'%%\]')
drule = RegionRule('tt.directive', r'\[\%', DirectiveGrammar, r'%%\]')
prule = RegionRule('tt.directive', r'\[\%(?= *PERL)', PerlDirectiveGrammar,
                   r'%%\]', PerlGrammar, r'\[%%', PerlDirectiveGrammar, '%%\]')

class TagGrammar(Grammar):
    rules = [crule, drule, prule] + mode.html.TagGrammar.rules
class JavascriptGrammar(Grammar):
    rules = [crule, drule, prule] + mode.javascript.JavascriptGrammar.rules
class CSSGrammar(Grammar):
    rules = [crule, drule, prule] + mode.css.CSSGrammar.rules
class CommentGrammar(Grammar):
    rules = [crule, drule, prule] + mode.html.CommentGrammar.rules
class CDataGrammar(Grammar):
    rules = [crule, drule, prule] + mode.html.CDataGrammar.rules
class MetadataGrammar(Grammar):
    rules = [crule, drule, prule] + mode.html.MetadataGrammar.rules
class DoctypeGrammar(Grammar):
    rules = [crule, drule, prule] + mode.html.DoctypeGrammar.rules

class TemplateGrammar(Grammar):
    rules = [
        crule, drule, prule,
        PatternRule('escaped', '&[^;]+;'),
        PatternRule('html.data', r'[^\[&<]+'),
        PatternRule('html.data', '[^&<]+'),
        RegionRule('html.tag', '<(?=script[^a-zA-Z0-9_])', TagGrammar, '>',
                   JavascriptGrammar, '</(?=script>)', TagGrammar, '>'),
        RegionRule('html.tag', '<(?=style[^a-zA-Z0-9_])', TagGrammar, '>',
                   CSSGrammar, '</(?=style>)', TagGrammar, '>'),
        RegionRule('comment', '<!--', CommentGrammar, '-->'),
        RegionRule('html.tag', r'<(?![\?!])', TagGrammar, '/?>'),
        RegionRule('html.metadata', r'<\?', MetadataGrammar, r'\?>'),
        RegionRule('html.doctype', '<!', DoctypeGrammar, '>'),
        PatternRule('html.entity', '&[a-z]+;'),
        RegionRule('html.cdata', r'<!\[CDATA\[', CDataGrammar, r'\]\]>'),
    ]

class Template(mode.Fundamental):
    name       = 'Template'
    extensions = ['.tt']
    grammar    = TemplateGrammar
    colors     = {
        'tt.directive.start':          ('magenta', 'default', 'bold'),
        'tt.directive.comment':        ('red', 'default', 'bold'),
        'tt.directive.keyword':        ('yellow', 'default', 'bold'),
        'tt.directive.attribute':      ('magenta', 'default', 'bold'),
        'tt.directive.string.start':   ('green', 'default', 'bold'),
        'tt.directive.string.escaped': ('magenta', 'default', 'bold'),
        'tt.directive.string.octal':   ('magenta', 'default', 'bold'),
        'tt.directive.string.null':    ('green', 'default', 'bold'),
        'tt.directive.string.end':     ('green', 'default', 'bold'),
        'tt.directive.null':           ('magenta', 'default', 'bold'),
        'tt.directive.middle0':        ('magenta', 'default', 'bold'),
        'tt.directive.middle1':        ('magenta', 'default', 'bold'),
        'tt.directive.end':            ('magenta', 'default', 'bold'),
        'tt.tag.start':                ('default', 'default'),
        'tt.tag.namespace':            ('magenta', 'default', 'bold'),
        'tt.tag.name':                 ('blue', 'default', 'bold'),
        'tt.tag.attrname':             ('cyan', 'default', 'bold'),
        'tt.tag.string.start':         ('green', 'default', 'bold'),
        'tt.tag.string.null':          ('green', 'default', 'bold'),
        'tt.tag.string.end':           ('green', 'default', 'bold'),
        'tt.tag.end':                  ('default', 'default'),
        'tt.perl':                     ('red', 'default', 'bold'),
    }
    _bindings = {
        'close-paren':   (')',),
        'close-brace':   ('}',),
        'close-bracket': (']',),
    }
install = Template.install