/usr/lib/python2.7/dist-packages/xlwt/ExcelFormulaParser.py is in python-xlwt 0.7.5+debian1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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### import antlr and other modules ..
import sys
import antlr
version = sys.version.split()[0]
if version < '2.2.1':
False = 0
if version < '2.3':
True = not False
### header action >>>
import struct
import Utils
from UnicodeUtils import upack1
from ExcelMagic import *
_RVAdelta = {"R": 0, "V": 0x20, "A": 0x40}
_RVAdeltaRef = {"R": 0, "V": 0x20, "A": 0x40, "D": 0x20}
_RVAdeltaArea = {"R": 0, "V": 0x20, "A": 0x40, "D": 0}
class FormulaParseException(Exception):
"""
An exception indicating that a Formula could not be successfully parsed.
"""
### header action <<<
### preamble action>>>
### preamble action <<<
### >>>The Known Token Types <<<
SKIP = antlr.SKIP
INVALID_TYPE = antlr.INVALID_TYPE
EOF_TYPE = antlr.EOF_TYPE
EOF = antlr.EOF
NULL_TREE_LOOKAHEAD = antlr.NULL_TREE_LOOKAHEAD
MIN_USER_TYPE = antlr.MIN_USER_TYPE
TRUE_CONST = 4
FALSE_CONST = 5
STR_CONST = 6
NUM_CONST = 7
INT_CONST = 8
FUNC_IF = 9
FUNC_CHOOSE = 10
NAME = 11
QUOTENAME = 12
EQ = 13
NE = 14
GT = 15
LT = 16
GE = 17
LE = 18
ADD = 19
SUB = 20
MUL = 21
DIV = 22
POWER = 23
PERCENT = 24
LP = 25
RP = 26
LB = 27
RB = 28
COLON = 29
COMMA = 30
SEMICOLON = 31
REF2D = 32
REF2D_R1C1 = 33
BANG = 34
CONCAT = 35
class Parser(antlr.LLkParser):
### user action >>>
### user action <<<
def __init__(self, *args, **kwargs):
antlr.LLkParser.__init__(self, *args, **kwargs)
self.tokenNames = _tokenNames
### __init__ header action >>>
self.rpn = ""
self.sheet_references = []
self.xcall_references = []
### __init__ header action <<<
def formula(self):
pass
self.expr("V")
def expr(self,
arg_type
):
pass
self.prec0_expr(arg_type)
while True:
if ((self.LA(1) >= EQ and self.LA(1) <= LE)):
pass
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [EQ]:
pass
self.match(EQ)
op = struct.pack('B', ptgEQ)
elif la1 and la1 in [NE]:
pass
self.match(NE)
op = struct.pack('B', ptgNE)
elif la1 and la1 in [GT]:
pass
self.match(GT)
op = struct.pack('B', ptgGT)
elif la1 and la1 in [LT]:
pass
self.match(LT)
op = struct.pack('B', ptgLT)
elif la1 and la1 in [GE]:
pass
self.match(GE)
op = struct.pack('B', ptgGE)
elif la1 and la1 in [LE]:
pass
self.match(LE)
op = struct.pack('B', ptgLE)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.prec0_expr(arg_type)
self.rpn += op
else:
break
def prec0_expr(self,
arg_type
):
pass
self.prec1_expr(arg_type)
while True:
if (self.LA(1)==CONCAT):
pass
pass
self.match(CONCAT)
op = struct.pack('B', ptgConcat)
self.prec1_expr(arg_type)
self.rpn += op
else:
break
def prec1_expr(self,
arg_type
):
pass
self.prec2_expr(arg_type)
while True:
if (self.LA(1)==ADD or self.LA(1)==SUB):
pass
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [ADD]:
pass
self.match(ADD)
op = struct.pack('B', ptgAdd)
elif la1 and la1 in [SUB]:
pass
self.match(SUB)
op = struct.pack('B', ptgSub)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.prec2_expr(arg_type)
self.rpn += op;
# print "**prec1_expr4 %s" % arg_type
else:
break
def prec2_expr(self,
arg_type
):
pass
self.prec3_expr(arg_type)
while True:
if (self.LA(1)==MUL or self.LA(1)==DIV):
pass
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [MUL]:
pass
self.match(MUL)
op = struct.pack('B', ptgMul)
elif la1 and la1 in [DIV]:
pass
self.match(DIV)
op = struct.pack('B', ptgDiv)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.prec3_expr(arg_type)
self.rpn += op
else:
break
def prec3_expr(self,
arg_type
):
pass
self.prec4_expr(arg_type)
while True:
if (self.LA(1)==POWER):
pass
pass
self.match(POWER)
op = struct.pack('B', ptgPower)
self.prec4_expr(arg_type)
self.rpn += op
else:
break
def prec4_expr(self,
arg_type
):
pass
self.prec5_expr(arg_type)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [PERCENT]:
pass
self.match(PERCENT)
self.rpn += struct.pack('B', ptgPercent)
elif la1 and la1 in [EOF,EQ,NE,GT,LT,GE,LE,ADD,SUB,MUL,DIV,POWER,RP,COMMA,SEMICOLON,CONCAT]:
pass
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
def prec5_expr(self,
arg_type
):
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,LP,REF2D]:
pass
self.primary(arg_type)
elif la1 and la1 in [SUB]:
pass
self.match(SUB)
self.primary(arg_type)
self.rpn += struct.pack('B', ptgUminus)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
def primary(self,
arg_type
):
str_tok = None
int_tok = None
num_tok = None
ref2d_tok = None
ref2d1_tok = None
ref2d2_tok = None
ref3d_ref2d = None
ref3d_ref2d2 = None
name_tok = None
func_tok = None
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [TRUE_CONST]:
pass
self.match(TRUE_CONST)
self.rpn += struct.pack("2B", ptgBool, 1)
elif la1 and la1 in [FALSE_CONST]:
pass
self.match(FALSE_CONST)
self.rpn += struct.pack("2B", ptgBool, 0)
elif la1 and la1 in [STR_CONST]:
pass
str_tok = self.LT(1)
self.match(STR_CONST)
self.rpn += struct.pack("B", ptgStr) + upack1(str_tok.text[1:-1].replace("\"\"", "\""))
elif la1 and la1 in [NUM_CONST]:
pass
num_tok = self.LT(1)
self.match(NUM_CONST)
self.rpn += struct.pack("<Bd", ptgNum, float(num_tok.text))
elif la1 and la1 in [FUNC_IF]:
pass
self.match(FUNC_IF)
self.match(LP)
self.expr("V")
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [SEMICOLON]:
pass
self.match(SEMICOLON)
elif la1 and la1 in [COMMA]:
pass
self.match(COMMA)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.rpn += struct.pack("<BBH", ptgAttr, 0x02, 0) # tAttrIf
pos0 = len(self.rpn) - 2
self.expr(arg_type)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [SEMICOLON]:
pass
self.match(SEMICOLON)
elif la1 and la1 in [COMMA]:
pass
self.match(COMMA)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.rpn += struct.pack("<BBH", ptgAttr, 0x08, 0) # tAttrSkip
pos1 = len(self.rpn) - 2
self.rpn = self.rpn[:pos0] + struct.pack("<H", pos1-pos0) + self.rpn[pos0+2:]
self.expr(arg_type)
self.match(RP)
self.rpn += struct.pack("<BBH", ptgAttr, 0x08, 3) # tAttrSkip
self.rpn += struct.pack("<BBH", ptgFuncVarR, 3, 1) # 3 = nargs, 1 = IF func
pos2 = len(self.rpn)
self.rpn = self.rpn[:pos1] + struct.pack("<H", pos2-(pos1+2)-1) + self.rpn[pos1+2:]
elif la1 and la1 in [FUNC_CHOOSE]:
pass
self.match(FUNC_CHOOSE)
arg_type = "R"
rpn_chunks = []
self.match(LP)
self.expr("V")
rpn_start = len(self.rpn)
ref_markers = [len(self.sheet_references)]
while True:
if (self.LA(1)==COMMA or self.LA(1)==SEMICOLON):
pass
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [SEMICOLON]:
pass
self.match(SEMICOLON)
elif la1 and la1 in [COMMA]:
pass
self.match(COMMA)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
mark = len(self.rpn)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
pass
self.expr(arg_type)
elif la1 and la1 in [RP,COMMA,SEMICOLON]:
pass
self.rpn += struct.pack("B", ptgMissArg)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
rpn_chunks.append(self.rpn[mark:])
ref_markers.append(len(self.sheet_references))
else:
break
self.match(RP)
self.rpn = self.rpn[:rpn_start]
nc = len(rpn_chunks)
chunklens = [len(chunk) for chunk in rpn_chunks]
skiplens = [0] * nc
skiplens[-1] = 3
for ic in xrange(nc-1, 0, -1):
skiplens[ic-1] = skiplens[ic] + chunklens[ic] + 4
jump_pos = [2 * nc + 2]
for ic in xrange(nc):
jump_pos.append(jump_pos[-1] + chunklens[ic] + 4)
chunk_shift = 2 * nc + 6 # size of tAttrChoose
for ic in xrange(nc):
for refx in xrange(ref_markers[ic], ref_markers[ic+1]):
ref = self.sheet_references[refx]
self.sheet_references[refx] = (ref[0], ref[1], ref[2] + chunk_shift)
chunk_shift += 4 # size of tAttrSkip
choose_rpn = []
choose_rpn.append(struct.pack("<BBH", ptgAttr, 0x04, nc)) # 0x04 is tAttrChoose
choose_rpn.append(struct.pack("<%dH" % (nc+1), *jump_pos))
for ic in xrange(nc):
choose_rpn.append(rpn_chunks[ic])
choose_rpn.append(struct.pack("<BBH", ptgAttr, 0x08, skiplens[ic])) # 0x08 is tAttrSkip
choose_rpn.append(struct.pack("<BBH", ptgFuncVarV, nc+1, 100)) # 100 is CHOOSE fn
self.rpn += "".join(choose_rpn)
elif la1 and la1 in [LP]:
pass
self.match(LP)
self.expr(arg_type)
self.match(RP)
self.rpn += struct.pack("B", ptgParen)
else:
if (self.LA(1)==INT_CONST) and (_tokenSet_0.member(self.LA(2))):
pass
int_tok = self.LT(1)
self.match(INT_CONST)
# print "**int_const", int_tok.text
int_value = int(int_tok.text)
if int_value <= 65535:
self.rpn += struct.pack("<BH", ptgInt, int_value)
else:
self.rpn += struct.pack("<Bd", ptgNum, float(int_value))
elif (self.LA(1)==REF2D) and (_tokenSet_0.member(self.LA(2))):
pass
ref2d_tok = self.LT(1)
self.match(REF2D)
# print "**ref2d %s %s" % (ref2d_tok.text, arg_type)
r, c = Utils.cell_to_packed_rowcol(ref2d_tok.text)
ptg = ptgRefR + _RVAdeltaRef[arg_type]
self.rpn += struct.pack("<B2H", ptg, r, c)
elif (self.LA(1)==REF2D) and (self.LA(2)==COLON):
pass
ref2d1_tok = self.LT(1)
self.match(REF2D)
self.match(COLON)
ref2d2_tok = self.LT(1)
self.match(REF2D)
r1, c1 = Utils.cell_to_packed_rowcol(ref2d1_tok.text)
r2, c2 = Utils.cell_to_packed_rowcol(ref2d2_tok.text)
ptg = ptgAreaR + _RVAdeltaArea[arg_type]
self.rpn += struct.pack("<B4H", ptg, r1, r2, c1, c2)
elif (self.LA(1)==INT_CONST or self.LA(1)==NAME or self.LA(1)==QUOTENAME) and (self.LA(2)==COLON or self.LA(2)==BANG):
pass
sheet1=self.sheet()
sheet2 = sheet1
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [COLON]:
pass
self.match(COLON)
sheet2=self.sheet()
elif la1 and la1 in [BANG]:
pass
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.match(BANG)
ref3d_ref2d = self.LT(1)
self.match(REF2D)
ptg = ptgRef3dR + _RVAdeltaRef[arg_type]
rpn_ref2d = ""
r1, c1 = Utils.cell_to_packed_rowcol(ref3d_ref2d.text)
rpn_ref2d = struct.pack("<3H", 0x0000, r1, c1)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [COLON]:
pass
self.match(COLON)
ref3d_ref2d2 = self.LT(1)
self.match(REF2D)
ptg = ptgArea3dR + _RVAdeltaArea[arg_type]
r2, c2 = Utils.cell_to_packed_rowcol(ref3d_ref2d2.text)
rpn_ref2d = struct.pack("<5H", 0x0000, r1, r2, c1, c2)
elif la1 and la1 in [EOF,EQ,NE,GT,LT,GE,LE,ADD,SUB,MUL,DIV,POWER,PERCENT,RP,COMMA,SEMICOLON,CONCAT]:
pass
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
self.rpn += struct.pack("<B", ptg)
self.sheet_references.append((sheet1, sheet2, len(self.rpn)))
self.rpn += rpn_ref2d
elif (self.LA(1)==NAME) and (_tokenSet_0.member(self.LA(2))):
pass
name_tok = self.LT(1)
self.match(NAME)
raise Exception("[formula] found unexpected NAME token (%r)" % name_tok.txt)
# #### TODO: handle references to defined names here
elif (self.LA(1)==NAME) and (self.LA(2)==LP):
pass
func_tok = self.LT(1)
self.match(NAME)
func_toku = func_tok.text.upper()
if func_toku in all_funcs_by_name:
(opcode,
min_argc,
max_argc,
func_type,
arg_type_str) = all_funcs_by_name[func_toku]
arg_type_list = list(arg_type_str)
else:
raise Exception("[formula] unknown function (%s)" % func_tok.text)
# print "**func_tok1 %s %s" % (func_toku, func_type)
xcall = opcode < 0
if xcall:
# The name of the add-in function is passed as the 1st arg
# of the hidden XCALL function
self.xcall_references.append((func_toku, len(self.rpn) + 1))
self.rpn += struct.pack("<BHHH",
ptgNameXR,
0xadde, # ##PATCHME## index to REF entry in EXTERNSHEET record
0xefbe, # ##PATCHME## one-based index to EXTERNNAME record
0x0000) # unused
self.match(LP)
arg_count=self.expr_list(arg_type_list, min_argc, max_argc)
self.match(RP)
if arg_count > max_argc or arg_count < min_argc:
raise Exception, "%d parameters for function: %s" % (arg_count, func_tok.text)
if xcall:
func_ptg = ptgFuncVarR + _RVAdelta[func_type]
self.rpn += struct.pack("<2BH", func_ptg, arg_count + 1, 255) # 255 is magic XCALL function
elif min_argc == max_argc:
func_ptg = ptgFuncR + _RVAdelta[func_type]
self.rpn += struct.pack("<BH", func_ptg, opcode)
elif arg_count == 1 and func_tok.text.upper() == "SUM":
self.rpn += struct.pack("<BBH", ptgAttr, 0x10, 0) # tAttrSum
else:
func_ptg = ptgFuncVarR + _RVAdelta[func_type]
self.rpn += struct.pack("<2BH", func_ptg, arg_count, opcode)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
def sheet(self):
ref = None
sheet_ref_name = None
sheet_ref_int = None
sheet_ref_quote = None
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [NAME]:
pass
sheet_ref_name = self.LT(1)
self.match(NAME)
ref = sheet_ref_name.text
elif la1 and la1 in [INT_CONST]:
pass
sheet_ref_int = self.LT(1)
self.match(INT_CONST)
ref = sheet_ref_int.text
elif la1 and la1 in [QUOTENAME]:
pass
sheet_ref_quote = self.LT(1)
self.match(QUOTENAME)
ref = sheet_ref_quote.text[1:-1].replace("''", "'")
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
return ref
def expr_list(self,
arg_type_list, min_argc, max_argc
):
arg_cnt = None
arg_cnt = 0
arg_type = arg_type_list[arg_cnt]
# print "**expr_list1[%d] req=%s" % (arg_cnt, arg_type)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
pass
self.expr(arg_type)
arg_cnt += 1
while True:
if (self.LA(1)==COMMA or self.LA(1)==SEMICOLON):
pass
if arg_cnt < len(arg_type_list):
arg_type = arg_type_list[arg_cnt]
else:
arg_type = arg_type_list[-1]
if arg_type == "+":
arg_type = arg_type_list[-2]
# print "**expr_list2[%d] req=%s" % (arg_cnt, arg_type)
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [SEMICOLON]:
pass
self.match(SEMICOLON)
elif la1 and la1 in [COMMA]:
pass
self.match(COMMA)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
la1 = self.LA(1)
if False:
pass
elif la1 and la1 in [TRUE_CONST,FALSE_CONST,STR_CONST,NUM_CONST,INT_CONST,FUNC_IF,FUNC_CHOOSE,NAME,QUOTENAME,SUB,LP,REF2D]:
pass
self.expr(arg_type)
elif la1 and la1 in [RP,COMMA,SEMICOLON]:
pass
self.rpn += struct.pack("B", ptgMissArg)
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
arg_cnt += 1
else:
break
elif la1 and la1 in [RP]:
pass
else:
raise antlr.NoViableAltException(self.LT(1), self.getFilename())
return arg_cnt
_tokenNames = [
"<0>",
"EOF",
"<2>",
"NULL_TREE_LOOKAHEAD",
"TRUE_CONST",
"FALSE_CONST",
"STR_CONST",
"NUM_CONST",
"INT_CONST",
"FUNC_IF",
"FUNC_CHOOSE",
"NAME",
"QUOTENAME",
"EQ",
"NE",
"GT",
"LT",
"GE",
"LE",
"ADD",
"SUB",
"MUL",
"DIV",
"POWER",
"PERCENT",
"LP",
"RP",
"LB",
"RB",
"COLON",
"COMMA",
"SEMICOLON",
"REF2D",
"REF2D_R1C1",
"BANG",
"CONCAT"
]
### generate bit set
def mk_tokenSet_0():
### var1
data = [ 37681618946L, 0L]
return data
_tokenSet_0 = antlr.BitSet(mk_tokenSet_0())
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