def __init__(self, tssconfig={}, encoding=None, outputdir="", lex_debug=None, yacc_debug=None, debug=None):
"""
Create a new TSSParser.
``tssconfig``
All configurations related to tayra templates, are represented in
this object.
``encoding``
Character encoding for input Tayra style text.
``outputdir``
To change the directory in which the parsetab.py file (and other
output files) are written.
``lex_debug``
PLY-Yacc option.
``yacc_debug``
Generate a parser.out file that explains how yacc built the parsing
table from the grammar.
"""
self.debug = lex_debug or yacc_debug or debug
self.encoding = encoding
optimize = tssconfig.get("parse_optimize", False)
lextab = tssconfig.get("lextab", LEXTAB) or LEXTAB
yacctab = tssconfig.get("yacctab", YACCTAB) or YACCTAB
# Build Lexer
self.tsslex = TSSLexer(error_func=self._lex_error_func)
kwargs = {"optimize": optimize} if optimize else {}
kwargs.update(debug=lex_debug)
kwargs.update(lextab=lextab) if lextab else None
self.tsslex.build(**kwargs)
self.tokens = self.tsslex.tokens
# Build Yaccer
kwargs = {"optimize": optimize} if optimize else {}
kwargs.update(debug=(yacc_debug or debug))
kwargs.update(outputdir=outputdir) if outputdir else None
kwargs.update(tabmodule=yacctab)
self.parser = ply.yacc.yacc(module=self, **kwargs)
self.parser.tssparser = self # For AST nodes to access `this`
# Parser initialization
self._tssconfig = tssconfig
self._initialize()
class TSSParser(object):
def __init__(self, tssconfig={}, encoding=None, outputdir="", lex_debug=None, yacc_debug=None, debug=None):
"""
Create a new TSSParser.
``tssconfig``
All configurations related to tayra templates, are represented in
this object.
``encoding``
Character encoding for input Tayra style text.
``outputdir``
To change the directory in which the parsetab.py file (and other
output files) are written.
``lex_debug``
PLY-Yacc option.
``yacc_debug``
Generate a parser.out file that explains how yacc built the parsing
table from the grammar.
"""
self.debug = lex_debug or yacc_debug or debug
self.encoding = encoding
optimize = tssconfig.get("parse_optimize", False)
lextab = tssconfig.get("lextab", LEXTAB) or LEXTAB
yacctab = tssconfig.get("yacctab", YACCTAB) or YACCTAB
# Build Lexer
self.tsslex = TSSLexer(error_func=self._lex_error_func)
kwargs = {"optimize": optimize} if optimize else {}
kwargs.update(debug=lex_debug)
kwargs.update(lextab=lextab) if lextab else None
self.tsslex.build(**kwargs)
self.tokens = self.tsslex.tokens
# Build Yaccer
kwargs = {"optimize": optimize} if optimize else {}
kwargs.update(debug=(yacc_debug or debug))
kwargs.update(outputdir=outputdir) if outputdir else None
kwargs.update(tabmodule=yacctab)
self.parser = ply.yacc.yacc(module=self, **kwargs)
self.parser.tssparser = self # For AST nodes to access `this`
# Parser initialization
self._tssconfig = tssconfig
self._initialize()
def _initialize(self, tssfile=None, tssconfig={}):
self.tssfile = tssfile
self.tssconfig = deepcopy(self._tssconfig)
self.tssconfig.update(tssconfig)
self.tsslex.reset_lineno()
def parse(self, text, tssfile=None, tssconfig={}, debuglevel=0):
"""Parse TSS and creates an AST tree. For every
parsing invocation, the same lex, yacc, app options and objects will
be used.
``filename``
Name of the file being parsed (for meaningful error messages)
``debuglevel``
Debug level to yacc
"""
# Parser Initialize
tssfile = tssfile if tssfile != None else self.tssfile
self._initialize(tssfile=tssfile, tssconfig=tssconfig)
self.tsslex.filename = self.tssfile = tssfile
# parse and get the translation unit
self.text = text
# parse and get the Translation Unit
debuglevel = self.debug or debuglevel
tracking = True if self.debug or debuglevel else False
self.tu = self.parser.parse(text, lexer=self.tsslex, debug=debuglevel, tracking=tracking)
return self.tu
# ------------------------- Private functions -----------------------------
def _lex_error_func(self, lex, msg, line, column):
self._parse_error(msg, self._coord(line, column))
def _coord(self, lineno, column=None):
return Coord(file=self.tsslex.filename, line=lineno, column=column)
def _parse_error(self, msg, coord):
raise ParseError("%s: %s" % (coord, msg))
def _printparse(self, p):
print p[0], " : ",
for i in range(1, len(p)):
print p[i],
print
def _termwspac2nonterm(self, p, text, termcls, nontermcls):
text1 = text.rstrip(" \t\r\n\f")
term, wspac = text[: len(text1)], text[len(text1) :]
wc = WC(p.parser, None, S(p.parser, wspac), None)
return nontermcls(p.parser, termcls(p.parser, term), wc)
# ---------- Precedence and associativity of operators --------------------
precedence = (
("left", "COMMA"),
("left", "QMARK", "COLON"),
("left", "EQUAL"),
("left", "GT", "LT", "AND", "OR"),
("left", "PLUS", "MINUS"),
("left", "STAR", "FWDSLASH"),
("right", "UNARY"),
)
def _buildterms(self, p, terms):
rc = []
for t in terms:
if t == None:
rc.append(None)
continue
elif isinstance(t, tuple):
cls, idx = t
rc.append(cls(p.parser, p[idx]))
else:
rc.append(t)
return rc
# TODO : Makes sure that charset, import and namespace non-terminals
# does not follow rulesets, media, page, font_face non-terminals
def p_tss(self, p):
"""tss : charset
| namespace
| font_face
| page
| media
| atrule
| rulesets
| wc
| tss charset
| tss namespace
| tss font_face
| tss page
| tss media
| tss atrule
| tss rulesets
| tss wc"""
if len(p) == 3:
if isinstance(p[2], Rulesets):
p[2] = Rulesets(p.parser, p[2], None)
p[0] = Tss(p.parser, p[1], p[2])
else:
if isinstance(p[1], Rulesets):
p[1] = Rulesets(p.parser, p[1], None)
p[0] = Tss(p.parser, None, p[1])
# ---- CDATA
def p_cdata_1(self, p):
"""cdata : CDO CDATATEXT CDC"""
x = [(CDO, 1), (CDATATEXT, 2), (CDC, 3)]
p[0] = Cdata(p.parser, *self._buildterms(p, x))
def p_cdata_2(self, p):
"""cdata : CDO CDC"""
x = [(CDO, 1), None, (CDC, 2)]
p[0] = Cdata(p.parser, *self._buildterms(p, x))
# ---- @charset
def p_charset(self, p):
"""charset : CHARSET_SYM string SEMICOLON"""
x = [(CHARSET_SYM, 1), p[2], (SEMICOLON, 3)]
p[0] = Charset(p.parser, *self._buildterms(p, x))
# ---- @namespace
def p_namespace_1(self, p):
"""namespacspec : NAMESPACE_SYM ident
| NAMESPACE_SYM EXTN_VAR"""
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
p[0] = [NAMESPACE_SYM(p.parser, p[1]), p[2], None, None]
def p_namespace_2(self, p):
"""namespacspec : NAMESPACE_SYM string
| NAMESPACE_SYM uri
| NAMESPACE_SYM EXTN_EXPR"""
if not isinstance(p[2], (String, Uri)):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_EXPR, ExtnExpr)
p[0] = [NAMESPACE_SYM(p.parser, p[1]), None, p[2], None]
def p_namespace_3(self, p):
"""namespacspec : namespacspec string
| namespacspec uri
| namespacspec EXTN_EXPR"""
if p[1][2]:
raise Exception("Multiple string or uri not allowed in namespace")
if not isinstance(p[2], (String, Uri)):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_EXPR, ExtnExpr)
p[1][2] = p[2]
p[0] = p[1]
def p_namespace_4(self, p):
"""namespace : namespacspec SEMICOLON"""
p[1][3] = SEMICOLON(p.parser, p[2])
p[0] = Namespace(p.parser, *p[1])
# ---- @font_face
def p_font_face(self, p):
"""font_face : FONT_FACE_SYM block"""
x = [(FONT_FACE_SYM, 1), p[2]]
p[0] = FontFace(p.parser, *self._buildterms(p, x))
# ---- atrule
# Gotcha : Handle generic at-rules
def p_atrule_1(self, p):
"""atrule : ATKEYWORD expr block"""
x = [(ATKEYWORD, 1), p[2], p[3], None, None]
p[0] = AtRule(p.parser, *self._buildterms(p, x))
def p_atrule_2(self, p):
"""atrule : ATKEYWORD expr SEMICOLON"""
x = [(ATKEYWORD, 1), p[2], None, (SEMICOLON, 3), None]
p[0] = AtRule(p.parser, *self._buildterms(p, x))
def p_atrule_3(self, p):
"""atrule : ATKEYWORD block"""
x = [(ATKEYWORD, 1), None, p[2], None, None]
p[0] = AtRule(p.parser, *self._buildterms(p, x))
def p_atrule_4(self, p):
"""atrule : ATKEYWORD SEMICOLON"""
x = [(ATKEYWORD, 1), None, None, (SEMICOLON, 2), None]
p[0] = AtRule(p.parser, *self._buildterms(p, x))
def p_atrule_5(self, p):
"""atrule : ATKEYWORD expr openbrace rulesets closebrace"""
term = ATKEYWORD(p.parser, p[1])
p[4] = Rulesets(p.parser, p[4], None)
p[0] = AtRule(p.parser, term, p[2], None, None, (p[3], p[4], p[5]))
def p_atrule_6(self, p):
"""atrule : ATKEYWORD openbrace rulesets closebrace"""
term = ATKEYWORD(p.parser, p[1])
p[3] = Rulesets(p.parser, p[3], None)
p[0] = AtRule(p.parser, term, None, None, None, (p[2], p[3], p[4]))
# ---- @media
def p_media_1(self, p):
"""mediaspec : MEDIA_SYM IDENT
| MEDIA_SYM IDENT S """
wc = (len(p) == 4) and WC(p.parser, None, S(p.parser, p[3]), None) or None
args = [IDENT(p.parser, p[2]), wc]
meds = Mediums(p.parser, None, None, Ident(p.parser, *args))
p[0] = [MEDIA_SYM(p.parser, p[1]), meds, None, None, None, None]
def p_media_2(self, p):
"""mediaspec : MEDIA_SYM EXTN_VAR"""
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
meds = Mediums(p.parser, None, None, p[2])
p[0] = [MEDIA_SYM(p.parser, p[1]), meds, None, None, None, None]
def p_media_3(self, p):
"""mediaspec : mediaspec COMMA IDENT
| mediaspec COMMA IDENT S"""
cls, value = p[2]
comma = cls(p.parser, value)
wc = (len(p) == 5) and WC(p.parser, None, S(p.parser, p[4]), None) or None
args = [IDENT(p.parser, p[3]), wc]
p[1][1] = Mediums(p.parser, p[1][1], comma, Ident(p.parser, *args))
p[0] = p[1]
def p_media_4(self, p):
"""mediaspec : mediaspec COMMA EXTN_VAR"""
cls, value = p[2]
comma = cls(p.parser, value)
p[3] = self._termwspac2nonterm(p, p[3], EXTN_VAR, ExtnVar)
p[1][1] = Mediums(p.parser, p[1][1], comma, p[3])
p[0] = p[1]
def p_media_5(self, p):
"""media : mediaspec exprs openbrace rulesets closebrace"""
p[4] = Rulesets(p.parser, p[4], None)
p[1][2], p[1][3], p[1][4], p[1][5] = p[2], p[3], p[4], p[5]
p[0] = Media(p.parser, *p[1])
def p_media_6(self, p):
"""media : mediaspec exprs openbrace closebrace"""
p[1][2], p[1][3], p[1][4], p[1][5] = p[2], p[3], None, p[4]
p[0] = Media(p.parser, *p[1])
def p_media_7(self, p):
"""media : mediaspec openbrace rulesets closebrace"""
p[3] = Rulesets(p.parser, p[3], None)
p[1][2], p[1][3], p[1][4], p[1][5] = None, p[2], p[3], p[4]
p[0] = Media(p.parser, *p[1])
def p_media_8(self, p):
"""media : mediaspec openbrace closebrace"""
p[1][2], p[1][3], p[1][4], p[1][5] = None, p[2], None, p[3]
p[0] = Media(p.parser, *p[1])
# ---- @page
def p_page_1(self, p):
"""page : PAGE_SYM ident block
| PAGE_SYM EXTN_VAR block"""
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
x = [(PAGE_SYM, 1), p[2], None, None, p[3]]
p[0] = Page(p.parser, *self._buildterms(p, x))
def p_page_2(self, p):
"""page : PAGE_SYM COLON ident block
| PAGE_SYM COLON EXTN_VAR block"""
cls, val = p[2]
if not isinstance(p[3], Ident):
p[3] = self._termwspac2nonterm(p, p[3], EXTN_VAR, ExtnVar)
x = [(PAGE_SYM, 1), None, cls(p.parser, val), p[3], p[4]]
p[0] = Page(p.parser, *self._buildterms(p, x))
def p_page_3(self, p):
"""page : PAGE_SYM ident COLON ident block
| PAGE_SYM EXTN_VAR COLON ident block
| PAGE_SYM ident COLON EXTN_VAR block
| PAGE_SYM EXTN_VAR COLON EXTN_VAR block"""
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
cls, val = p[3]
if not isinstance(p[4], Ident):
p[4] = self._termwspac2nonterm(p, p[4], EXTN_VAR, ExtnVar)
x = [(PAGE_SYM, 1), p[2], cls(p.parser, val), p[4], p[5]]
p[0] = Page(p.parser, *self._buildterms(p, x))
def p_page_4(self, p):
"""page : PAGE_SYM block"""
x = [(PAGE_SYM, 1), None, None, None, p[2]]
p[0] = Page(p.parser, *self._buildterms(p, x))
def p_pagemargin_1(self, p):
"""pagemargin : PAGE_MARGIN_SYM block"""
p[0] = PageMargin(p.parser, PAGE_MARGIN_SYM(p.parser, p[1]), p[2])
def p_pagemargin_2(self, p):
"""pagemargin : PAGE_MARGIN_SYM"""
p[0] = PageMargin(p.parser, PAGE_MARGIN_SYM(p.parser, p[1]), None)
# ---- @import
def p_import_1(self, p):
"""importspec : IMPORT_SYM string
| IMPORT_SYM uri"""
p[0] = [IMPORT_SYM(p.parser, p[1]), p[2], None, None]
def p_import_2(self, p):
"""importspec : importspec IDENT
| importspec IDENT S"""
wc = (len(p) == 4) and WC(p.parser, None, S(p.parser, p[3]), None) or None
args = [IDENT(p.parser, p[2]), wc]
p[1][2] = Mediums(p.parser, None, None, Ident(p.parser, *args))
p[0] = p[1]
def p_import_3(self, p):
"""importspec : importspec EXTN_VAR"""
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
p[1][2] = Mediums(p.parser, p[1][2], None, p[2])
p[0] = p[1]
def p_import_4(self, p):
"""importspec : importspec COMMA IDENT
| importspec COMMA IDENT S"""
cls, value = p[2]
comma = cls(p.parser, value)
wc = (len(p) == 5) and WC(p.parser, None, S(p.parser, p[4]), None) or None
args = [IDENT(p.parser, p[3]), wc]
p[1][2] = Mediums(p.parser, p[1][2], comma, Ident(p.parser, *args))
p[0] = p[1]
def p_import_5(self, p):
"""importspec : importspec COMMA EXTN_VAR"""
cls, value = p[2]
p[3] = self._termwspac2nonterm(p, p[3], EXTN_VAR, ExtnVar)
p[1][2] = Mediums(p.parser, p[1][2], cls(p.parser, value), p[3])
p[0] = p[1]
def p_import_6(self, p):
"""import : importspec SEMICOLON"""
p[1][3] = SEMICOLON(p.parser, p[2])
p[0] = Import(p.parser, *p[1])
# ---- extend
def p_extend_1(self, p):
"""extend : EXTEND_SYM selector SEMICOLON"""
x = [(EXTEND_SYM, 1), p[2], (SEMICOLON, 3), None]
p[0] = Extend(p.parser, *self._buildterms(p, x))
def p_extend_2(self, p):
"""extend : EXTEND_SYM selector SEMICOLON wc"""
x = [(EXTEND_SYM, 1), p[2], (SEMICOLON, 3), p[4]]
p[0] = Extend(p.parser, *self._buildterms(p, x))
# ---- ruleset
# TODO : only `&` is allowd in DLIMIT terminal, this constraint should
# be checked inside `ElementName` class
def p_rulesets_1(self, p):
"""rulesets : ruleset
| rulesets ruleset"""
args = [p[1], p[2]] if len(p) == 3 else [None, p[1]]
p[0] = Rulesets(p.parser, *args)
def p_rulesets_2(self, p):
"""rulesets : EXTN_STATEMENT
| rulesets EXTN_STATEMENT"""
if len(p) == 3:
p[2] = self._termwspac2nonterm(p, p[2], EXTN_STATEMENT, ExtnStatement)
p[0] = Rulesets(p.parser, p[1], p[2])
else:
p[1] = self._termwspac2nonterm(p, p[1], EXTN_STATEMENT, ExtnStatement)
p[0] = Rulesets(p.parser, None, p[1])
def p_ruleset_1(self, p):
"""ruleset : block
| selectors block"""
args = [p[1], p[2]] if len(p) == 3 else [None, p[1]]
args.append(None)
p[0] = Ruleset(p.parser, *args)
def p_ruleset_2(self, p):
"""ruleset : import
| cdata"""
p[0] = Ruleset(p.parser, None, None, p[1])
def p_selectors_1(self, p):
"""selectors : selector"""
x = [None, None, p[1]]
p[0] = Selectors(p.parser, *self._buildterms(p, x))
def p_selectors_2(self, p):
"""selectors : selectors COMMA selector"""
cls, val = p[2]
x = [p[1], cls(p.parser, val), p[3]]
p[0] = Selectors(p.parser, *self._buildterms(p, x))
def p_selector_1(self, p):
"""selector : simpselector
| EXTN_EXPR """
if not isinstance(p[1], SimpleSelector):
p[1] = self._termwspac2nonterm(p, p[1], EXTN_EXPR, ExtnExpr)
p[0] = Selector(p.parser, None, None, p[1])
def p_selector_2(self, p):
"""selector : selector simpselector"""
p[0] = Selector(p.parser, p[1], None, p[2])
def p_selector_3(self, p):
"""selector : selector SEL_GT simpselector
| selector SEL_PLUS simpselector
| selector SEL_TILDA simpselector"""
cls, value = p[2]
p[0] = Selector(p.parser, p[1], cls(p.parser, value), p[3])
def p_simpselector_1(self, p):
"""simpselector : sel_ident
| SEL_EXTN_VAR"""
if not isinstance(p[1], Ident):
p[1] = self._termwspac2nonterm(p, p[1], EXTN_VAR, ExtnVar)
p[0] = SimpleSelector(p.parser, None, None, p[1], None, None, None)
def p_simpselector_2(self, p):
"""simpselector : sel_hash"""
p[0] = SimpleSelector(p.parser, None, None, None, p[1], None, None)
def p_simpselector_3(self, p):
"""simpselector : SEL_STAR
| AMPERSAND"""
cls, value = p[1]
term = cls(p.parser, value)
p[0] = SimpleSelector(p.parser, term, None, None, None, None, None)
def p_simpselector_4(self, p):
"""simpselector : DOT sel_ident
| DOT EXTN_VAR"""
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
cls, value = p[1]
term = cls(p.parser, value)
p[0] = SimpleSelector(p.parser, None, term, p[2], None, None, None)
def p_simpselector_5(self, p):
"""simpselector : attrib"""
p[0] = SimpleSelector(p.parser, None, None, None, None, p[1], None)
def p_simpselector_6(self, p):
"""simpselector : pseudo"""
p[0] = SimpleSelector(p.parser, None, None, None, None, None, p[1])
def p_attrib_1(self, p):
"""attrib : opensqr sel_ident attroperator sel_ident closesqr
| opensqr sel_ident attroperator sel_string closesqr"""
p[0] = Attrib(p.parser, p[1], p[2], p[3], p[4], p[5])
def p_attrib_2(self, p):
"""attrib : opensqr EXTN_VAR attroperator sel_ident closesqr
| opensqr EXTN_VAR attroperator sel_string closesqr"""
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
p[0] = Attrib(p.parser, p[1], p[2], p[3], p[4], p[5])
def p_attrib_3(self, p):
"""attrib : opensqr sel_ident attroperator EXTN_VAR closesqr"""
p[4] = self._termwspac2nonterm(p, p[4], EXTN_VAR, ExtnVar)
p[0] = Attrib(p.parser, p[1], p[2], p[3], p[4], p[5])
def p_attrib_4(self, p):
"""attrib : opensqr sel_ident attroperator EXTN_EXPR closesqr"""
p[4] = self._termwspac2nonterm(p, p[4], EXTN_EXPR, ExtnExpr)
p[0] = Attrib(p.parser, p[1], p[2], p[3], p[4], p[5])
def p_attrib_5(self, p):
"""attrib : opensqr sel_ident closesqr
| opensqr EXTN_VAR closesqr"""
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
p[0] = Attrib(p.parser, p[1], p[2], None, None, p[3])
def p_attroperator(self, p):
"""attroperator : SEL_EQUAL
| INCLUDES
| DASHMATCH
| PREFIXMATCH
| SUFFIXMATCH
| SUBSTRINGMATCH"""
cls, value = p[1]
p[0] = AttrOperator(p.parser, cls(p.parser, value))
def p_pseudo_1(self, p):
"""pseudo : SEL_COLON sel_ident
| SEL_COLON func_call"""
cls, value = p[1]
p[0] = Pseudo(p.parser, None, cls(p.parser, value), p[2])
def p_pseudo_2(self, p):
"""pseudo : SEL_COLON EXTN_VAR"""
cls, value = p[1]
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
p[0] = Pseudo(p.parser, None, cls(p.parser, value), p[2])
def p_pseudo_3(self, p):
"""pseudo : SEL_COLON SEL_COLON sel_ident
| SEL_COLON SEL_COLON func_call"""
cls1, val1 = p[1]
cls2, val2 = p[2]
p[0] = Pseudo(p.parser, cls1(p.parser, val1), cls2(p.parser, val2), p[3])
def p_pseudo_4(self, p):
"""pseudo : SEL_COLON SEL_COLON EXTN_VAR"""
cls1, val1 = p[1]
cls2, val2 = p[2]
p[3] = self._termwspac2nonterm(p, p[3], EXTN_VAR, ExtnVar)
p[0] = Pseudo(p.parser, cls1(p.parser, val1), cls2(p.parser, val2), p[3])
# ---- Declaration block
def p_block(self, p):
"""block : openbrace declarations closebrace
| openbrace closebrace"""
args = [p[1], p[2], p[3]] if len(p) == 4 else [p[1], None, p[2]]
p[0] = Block(p.parser, *args)
def p_declarations_1(self, p):
"""declarations : extend
| declaration
| pagemargin
| rulesets"""
if isinstance(p[1], Rulesets):
p[1] = Rulesets(p.parser, p[1], None)
p[0] = Declarations(p.parser, None, None, None, p[1])
def p_declarations_3(self, p):
"""declarations : pagemargin declaration
| rulesets declaration"""
if isinstance(p[1], Rulesets):
p[1] = Rulesets(p.parser, p[1], None)
dcls = Declarations(p.parser, None, None, None, p[1])
p[0] = Declarations(p.parser, dcls, None, None, p[2])
def p_declarations_4(self, p):
"""declarations : declarations SEMICOLON"""
term = SEMICOLON(p.parser, p[2])
p[0] = Declarations(p.parser, p[1], term, None, None)
def p_declarations_5(self, p):
"""declarations : declarations SEMICOLON declaration"""
term = SEMICOLON(p.parser, p[2])
p[0] = Declarations(p.parser, p[1], term, None, p[3])
def p_declarations_6(self, p):
"""declarations : declarations SEMICOLON wc"""
term = SEMICOLON(p.parser, p[2])
p[0] = Declarations(p.parser, p[1], term, p[3], None)
def p_declarations_7(self, p):
"""declarations : declarations SEMICOLON wc declaration"""
term = SEMICOLON(p.parser, p[2])
p[0] = Declarations(p.parser, p[1], term, p[3], p[4])
def p_declarations_8(self, p):
"""declarations : declarations rulesets
| declarations pagemargin"""
if isinstance(p[2], Rulesets):
p[2] = Rulesets(p.parser, p[2], None)
p[0] = Declarations(p.parser, p[1], None, None, p[2])
def p_declarations_9(self, p):
"""declarations : declarations pagemargin declaration
| declarations rulesets declaration"""
if isinstance(p[2], Rulesets):
p[2] = Rulesets(p.parser, p[2], None)
dcls = Declarations(p.parser, p[1], None, None, p[2])
p[0] = Declarations(p.parser, dcls, None, None, p[3])
def p_declaration_1(self, p):
"""declaration : ident COLON exprs
| ident COLON EXTN_EXPR
| EXTN_VAR COLON exprs
| EXTN_VAR COLON EXTN_EXPR"""
if not isinstance(p[1], Ident):
p[1] = self._termwspac2nonterm(p, p[1], EXTN_VAR, ExtnVar)
cls, value = p[2]
if not isinstance(p[3], Exprs):
p[3] = self._termwspac2nonterm(p, p[3], EXTN_EXPR, ExtnExpr)
x = [None, p[1], cls(p.parser, value), p[3], None]
p[0] = Declaration(p.parser, *self._buildterms(p, x))
def p_declaration_2(self, p):
"""declaration : ident COLON exprs prio
| ident COLON EXTN_EXPR prio
| EXTN_VAR COLON exprs prio
| EXTN_VAR COLON EXTN_EXPR prio"""
if not isinstance(p[1], Ident):
p[1] = self._termwspac2nonterm(p, p[1], EXTN_VAR, ExtnVar)
cls, value = p[2]
if not isinstance(p[3], Exprs):
p[3] = self._termwspac2nonterm(p, p[3], EXTN_EXPR, ExtnExpr)
x = [None, p[1], cls(p.parser, value), p[3], p[4]]
p[0] = Declaration(p.parser, *self._buildterms(p, x))
def p_declaration_3(self, p):
"""declaration : PREFIXSTAR ident COLON exprs
| PREFIXSTAR ident COLON EXTN_EXPR
| PREFIXSTAR EXTN_VAR COLON exprs
| PREFIXSTAR EXTN_VAR COLON EXTN_EXPR"""
cls1, val1 = p[1]
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
cls2, val2 = p[3]
if not isinstance(p[4], Exprs):
p[4] = self._termwspac2nonterm(p, p[4], EXTN_EXPR, ExtnExpr)
x = [cls1(p.parser, val1), p[2], cls2(p.parser, val2), p[4], None]
p[0] = Declaration(p.parser, *self._buildterms(p, x))
def p_declaration_4(self, p):
"""declaration : PREFIXSTAR ident COLON exprs prio
| PREFIXSTAR ident COLON EXTN_EXPR prio
| PREFIXSTAR EXTN_VAR COLON exprs prio
| PREFIXSTAR EXTN_VAR COLON EXTN_EXPR prio"""
cls1, val1 = p[1]
if not isinstance(p[2], Ident):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_VAR, ExtnVar)
cls2, val2 = p[3]
if not isinstance(p[4], Exprs):
p[3] = self._termwspac2nonterm(p, p[3], EXTN_EXPR, ExtnExpr)
x = [cls1(p.parser, val1), p[2], cls2(p.parser, val2), p[4], p[5]]
p[0] = Declaration(p.parser, *self._buildterms(p, x))
def p_prio(self, p):
"""prio : IMPORTANT_SYM
| IMPORTANT_SYM wc"""
x = [(IMPORTANT_SYM, 1), p[2]] if len(p) == 3 else [(IMPORTANT_SYM, 1), None]
p[0] = Priority(p.parser, *self._buildterms(p, x))
# ---- expressions
def p_exprs_1(self, p):
"""exprs : expr"""
p[0] = Exprs(p.parser, None, None, p[1])
def p_exprs_2(self, p):
"""exprs : exprs expr"""
plaincss = p.parser.tssparser.tssconfig.get("plaincss", False)
if plaincss:
p[0] = Exprs(p.parser, p[1], None, p[2])
else:
p[0] = Exprs(p.parser, p[1], None, p[2], s=S(p.parser, " "))
def p_exprs_3(self, p):
"""exprs : exprs COMMA expr"""
cls, value = p[2]
term = cls(p.parser, value)
p[0] = Exprs(p.parser, p[1], term, p[3])
def p_expr_1(self, p):
"""expr : term"""
args = [p[1], None, None, None, None]
p[0] = Expr(p.parser, *args)
def p_expr_2(self, p):
"""expr : openparan expr closeparan
| openparan exprcolon closeparan"""
expr = ExprParan(p.parser, p[1], p[2], p[3])
p[0] = Expr(p.parser, None, expr, None, None, None)
def p_expr_3(self, p):
"""expr : expr QMARK exprcolon"""
cls, value = p[2]
term = cls(p.parser, value)
expr = ExprTernary(p.parser, p[1], term, p[3])
p[0] = Expr(p.parser, None, expr, None, None, None)
def p_expr_4(self, p):
"""expr : expr PLUS expr
| expr MINUS expr
| expr STAR expr
| expr AND expr
| expr OR expr"""
cls, value = p[2]
term = cls(p.parser, value)
p[0] = Expr(p.parser, None, None, p[1], term, p[3])
def p_expr_5(self, p):
"""expr : expr FWDSLASH expr"""
cls, value = p[2]
term = cls(p.parser, value)
p[0] = Expr(p.parser, None, None, p[1], term, p[3])
def p_expr_6(self, p):
"""expr : expr EQUAL expr
| expr GT expr
| expr LT expr"""
cls, value = p[2]
term = cls(p.parser, value)
p[0] = Expr(p.parser, None, None, p[1], term, p[3])
def p_expr_7(self, p):
"""expr : MINUS expr %prec UNARY
| PLUS expr %prec UNARY"""
cls, value = p[1]
term = cls(p.parser, value)
p[0] = Expr(p.parser, None, None, None, term, p[2])
def p_exprcolon(self, p):
"""exprcolon : expr COLON expr"""
cls, value = p[2]
term = cls(p.parser, value)
p[0] = Expr(p.parser, None, None, p[1], term, p[3])
def p_term_1(self, p):
"""term : number
| dimension
| func_call
| ident
| string
| uri
| unicoderange
| hash
| EXTN_VAR"""
ts = (Number, Dimension, FuncCall, Ident, String, Uri, UnicodeRange, Hash)
if not isinstance(p[1], ts):
p[1] = self._termwspac2nonterm(p, p[1], EXTN_VAR, ExtnVar)
p[0] = Term(p.parser, p[1])
def p_func_call_1(self, p):
"""func_call : FUNCTION exprs closeparan
| FUNCTION EXTN_EXPR closeparan"""
if not isinstance(p[2], Exprs):
p[2] = self._termwspac2nonterm(p, p[2], EXTN_EXPR, ExtnExpr)
x = [(FUNCTION, 1), p[2], None, p[3]]
p[0] = FuncCall(p.parser, *self._buildterms(p, x))
def p_func_call_2(self, p):
"""func_call : FUNCTION simpselector closeparan"""
x = [(FUNCTION, 1), None, p[2], p[3]]
p[0] = FuncCall(p.parser, *self._buildterms(p, x))
def p_func_call_3(self, p):
"""func_call : FUNCTION closeparan"""
x = [(FUNCTION, 1), None, None, p[2]]
p[0] = FuncCall(p.parser, *self._buildterms(p, x))
# ---- Terminals with whitespace
def p_sel_ident(self, p):
"""sel_ident : SEL_IDENT wc
| SEL_IDENT"""
x = [(IDENT, 1), p[2]] if len(p) == 3 else [(IDENT, 1), None]
p[0] = Ident(p.parser, *self._buildterms(p, x))
def p_sel_string(self, p):
"""sel_string : SEL_STRING wc
| SEL_STRING"""
x = [(STRING, 1), p[2]] if len(p) == 3 else [(STRING, 1), None]
p[0] = String(p.parser, *self._buildterms(p, x))
def p_sel_hash(self, p):
"""sel_hash : SEL_HASH wc
| SEL_HASH"""
(cls, value) = p[1]
wc = p[2] if len(p) == 3 else None
p[0] = Hash(p.parser, cls(p.parser, value), wc)
def p_ident(self, p):
"""ident : IDENT wc
| IDENT"""
x = [(IDENT, 1), p[2]] if len(p) == 3 else [(IDENT, 1), None]
p[0] = Ident(p.parser, *self._buildterms(p, x))
def p_string(self, p):
"""string : STRING wc
| STRING"""
x = [(STRING, 1), p[2]] if len(p) == 3 else [(STRING, 1), None]
p[0] = String(p.parser, *self._buildterms(p, x))
def p_uri(self, p):
"""uri : URI wc
| URI"""
x = [(URI, 1), p[2]] if len(p) == 3 else [(URI, 1), None]
p[0] = Uri(p.parser, *self._buildterms(p, x))
def p_unicoderange(self, p):
"""unicoderange : UNICODERANGE wc
| UNICODERANGE"""
x = [(UNICODERANGE, 1), p[2]] if len(p) == 3 else [(UNICODERANGE, 1), None]
p[0] = UnicodeRange(p.parser, *self._buildterms(p, x))
def p_number(self, p):
"""number : NUMBER wc
| NUMBER"""
(cls, value) = p[1]
term = cls(p.parser, value)
wc = p[2] if len(p) == 3 else None
p[0] = Number(p.parser, term, wc)
def p_dimension(self, p):
"""dimension : DIMENSION wc
| DIMENSION"""
(cls, value) = p[1]
term = cls(p.parser, value)
wc = p[2] if len(p) == 3 else None
p[0] = Dimension(p.parser, term, wc)
def p_hash(self, p):
"""hash : HASH wc
| HASH"""
(cls, value) = p[1]
term = cls(p.parser, value)
wc = p[2] if len(p) == 3 else None
p[0] = Hash(p.parser, term, wc)
def p_openbrace(self, p):
"""openbrace : OPENBRACE wc
| OPENBRACE"""
t = OPENBRACE(p.parser, p[1])
wc = p[2] if len(p) == 3 else None
p[0] = Openbrace(p.parser, t, wc)
def p_closebrace(self, p):
"""closebrace : CLOSEBRACE wc
| CLOSEBRACE"""
t = CLOSEBRACE(p.parser, p[1])
# wc = WC(p.parser, None, S(p.parser, p[2]), None) if len(p)==3 else None
wc = p[2] if len(p) == 3 else None
p[0] = Closebrace(p.parser, t, wc)
def p_opensqr(self, p):
"""opensqr : OPENSQR wc
| OPENSQR"""
t = OPENSQR(p.parser, p[1])
wc = p[2] if len(p) == 3 else None
p[0] = Opensqr(p.parser, t, wc)
def p_closesqr(self, p):
"""closesqr : CLOSESQR wc
| CLOSESQR"""
t = CLOSESQR(p.parser, p[1])
wc = p[2] if len(p) == 3 else None
p[0] = Closesqr(p.parser, t, wc)
def p_openparan(self, p):
"""openparan : OPENPARAN wc
| OPENPARAN"""
t = OPENPARAN(p.parser, p[1])
wc = p[2] if len(p) == 3 else None
p[0] = Openparan(p.parser, t, wc)
def p_closeparan(self, p):
"""closeparan : CLOSEPARAN wc
| CLOSEPARAN"""
t = CLOSEPARAN(p.parser, p[1])
wc = p[2] if len(p) == 3 else None
p[0] = Closeparan(p.parser, t, wc)
def p_wc_1(self, p):
"""wc : S
| wc S"""
args = [p[1], S(p.parser, p[2]), None] if len(p) == 3 else [None, S(p.parser, p[1]), None]
p[0] = WC(p.parser, *args)
def p_wc_2(self, p):
"""wc : COMMENT
| wc COMMENT"""
args = [p[1], None, COMMENT(p.parser, p[2])] if len(p) == 3 else [None, None, COMMENT(p.parser, p[1])]
p[0] = WC(p.parser, *args)
# ---- For confirmance with forward compatible CSS
def p_error(self, p):
if p:
column = self.tsslex._find_tok_column(p)
self._parse_error("before: %s " % (p.value,), self._coord(p.lineno, column))
else:
self._parse_error("At end of input", "")