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#!/usr/bin/env python
# coding=utf-8
'''
gMathLib, mathematic expressions handling library
# pyGMathLib test formula shared source
Copyright (C) 2007 Guillaume Seguin <guillaume@segu.in>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
'''
def make_test_formula (context):
formula = context.Formula ()
symbol0 = context.Atom ("0")
symbol1 = context.Atom ("1")
symbol2 = context.Atom ("2")
symbol10 = context.Atom ("10")
symbolx = context.Atom ("x")
symboly = context.Atom ("y")
symboli = context.Atom ("i")
symbolalpha = context.Symbol (type = "alpha")
symbolinfty = context.Symbol (type = "infty")
sin = context.Symbol (type = "fun")
sin.value = "sin"
sin.set_child (symbolx, 0)
frac = context.Symbol (type = "frac")
frac.set_child (sin, 0)
frac.set_child (symbolx.copy (), 1)
app = context.Symbol (type = "approach")
app.set_child (symbolx.copy (), 0)
app.set_child (symbol0, 1)
lim = context.Symbol (type = "lim")
lim.set_child (app, 0)
lim.set_child (frac, 1)
equal = context.Symbol ("2op")
equal.value = "="
equal.set_child (lim, 0)
equal.set_child (symbol1, 1)
super = context.Symbol (type = "super")
super.set_child (symbolx.copy (), 0)
super.set_child (symbol2, 1)
sub = context.Symbol (type = "sub")
sub.set_child (symboly, 0)
sub.set_child (symbolalpha, 1)
add = context.Symbol (type = "2op")
add.value = "+"
add.set_child (super, 0)
add.set_child (sub, 1)
lparen = context.Symbol (type = "lparen")
lparen.value = "("
rparen = context.Symbol (type = "rparen")
rparen.value = ")"
paren = context.Symbol (type = "paren")
paren.set_child (lparen, 0)
paren.set_child (add, 1)
paren.set_child (rparen, 2)
fun = context.Symbol (type = "fun")
fun.value = "sin"
fun.set_child (paren, 0)
frac = context.Symbol (type = "frac")
frac.set_child (fun, 0)
eq = equal.copy ()
eq.set_child (symboli, 0)
eq.set_child (symbol0.copy (), 1)
lparen = lparen.copy ()
rparen = rparen.copy ()
paren = context.Symbol (type = "paren")
paren.set_child (lparen, 0)
paren.set_child (frac, 1)
paren.set_child (rparen, 2)
integral = context.Symbol (type = "integral")
integral.set_child (symbol0.copy (), 0)
integral.set_child (symbol1.copy (), 1)
integral.set_child (paren, 2)
product = context.Symbol (type = "product")
product.set_child (eq, 0)
product.set_child (symbol10, 1)
product.set_child (integral, 2)
equal2 = equal.copy ()
equal2.set_child (product, 0)
equal2.set_child (symbolinfty, 1)
comma = context.Symbol (type = "2op")
comma.value = ", "
comma.set_child (equal, 0)
comma.set_child (equal2, 1)
formula.set_root (comma)
return formula
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