def test_operator_dispatch_2(): #IGNORE:C01111
msg = 'Test Interpreter: handling of operators with unknown Float values.'
#skip_test(msg)
print msg
from freeode.interpreter import Interpreter, IFloat, istype
from freeode.ast import (NodeOpInfix2, NodeOpPrefix1, NodeFuncCall,
RoleVariable)
from freeode.util import func #, aa_make_tree
intp = Interpreter()
val_2 = IFloat()
val_2.__siml_role__ = RoleVariable
val_3 = IFloat()
val_3.__siml_role__ = RoleVariable
op_sub = NodeOpInfix2('-', [val_2, val_3])
res = intp.eval(op_sub)
print res
assert isinstance(res, NodeFuncCall)
assert res.function is func(IFloat.__sub__)
assert istype(res, IFloat)
op_neg = NodeOpPrefix1('-', [val_2])
res = intp.eval(op_neg)
print res
assert isinstance(res, NodeFuncCall)
assert res.function is func(IFloat.__neg__)
assert istype(res, IFloat)
def test_operator_dispatch_1(): #IGNORE:C01111
msg = 'Test Interpreter: handling of operators with known Float values.'
#skip_test(msg)
print msg
from freeode.interpreter import (IFloat, Interpreter)
from freeode.ast import NodeOpInfix2, NodeOpPrefix1
intp = Interpreter()
val_2 = IFloat(2)
val_3 = IFloat(3)
op_sub = NodeOpInfix2('-', [val_2, val_3])
res = intp.eval(op_sub)
print res
assert res.value == -1
op_neg = NodeOpPrefix1('-', [val_2])
res = intp.eval(op_neg)
print res
assert res.value == -2
def test_function_call_unknown_arguments_1(): #IGNORE:C01111
msg = 'Test expression evaluation (calling built in functions), unknown arguments'
#skip_test(msg)
print msg
from freeode.interpreter import (IModule, ExecutionEnvironment,
Interpreter, signature,
IFloat, RoleVariable, istype, test_allknown)
from freeode.ast import NodeFuncCall, NodeIdentifier
from freeode.util import aa_make_tree
import math
#create module where the function lives
mod = IModule()
#create sqrt function that can be called from Siml
@signature([IFloat], IFloat)
def sqrt(x):
test_allknown(x)
return IFloat(math.sqrt(x.value))
#put function into module
mod.sqrt = sqrt
print
print 'Module where function is located: --------------------------------------------'
#print aa_make_tree(mod)
#create environment for lookup of variables (stack frame)
env = ExecutionEnvironment()
env.global_scope = mod
#create visitor for evaluating the expression
intp = Interpreter()
intp.push_environment(env)
#create a Siml value as function argument
val_1 = IFloat()
val_1.__siml_role__ = RoleVariable
#create function call with unkown argument
call = NodeFuncCall(NodeIdentifier('sqrt'), [val_1], {})
#evaluate the function call
ret_val = intp.eval(call)
print
print 'Result object: --------------------------------------------------------------'
print aa_make_tree(ret_val)
#evaluating a function call with unknown arguments must return a function call
assert isinstance(ret_val, NodeFuncCall)
assert istype(ret_val, IFloat)
def test_expression_evaluation_5(): #IGNORE:C01111
msg = \
'''
Test expression evaluation (returning of partially evaluated expression
when accessing variables)
'''
#skip_test(msg)
print msg
from freeode.ast import RoleVariable, NodeFuncCall
from freeode.interpreter import (IModule, IFloat, ExecutionEnvironment,
Interpreter, istype)
import freeode.simlparser as simlparser
from freeode.util import func #, aa_make_tree
#parse the expression
ps = simlparser.Parser()
ex = ps.parseExpressionStr('a + 2*2')
# print
# print 'AST (parser output): -----------------------------------------------------------'
# print aa_make_tree(ex)
#create module where name lives
mod = IModule()
#create attribute 'a' with no value
val_2 = IFloat()
val_2.__siml_role__ = RoleVariable
mod.a = val_2
# print
# print 'Module where variable is located: --------------------------------------------'
# print aa_make_tree(mod)
#create environment for lookup of variables (stack frame)
env = ExecutionEnvironment()
env.global_scope = mod
#interpret the expression
intp = Interpreter()
intp.environment = env
res = intp.eval(ex)
# print
# print 'Result object - should be an unevaluated expression: --------------------------------------------------------------'
# print aa_make_tree(res)
assert isinstance(res, NodeFuncCall)
assert res.function is func(IFloat.__add__)
assert istype(res, IFloat)
def test_expression_evaluation_4(): #IGNORE:C01111
msg = 'Test expression evaluation (calling built in functions)'
#skip_test(msg)
print msg
from freeode.interpreter import (IModule, ExecutionEnvironment,
Interpreter, signature, IFloat)
from freeode.util import aa_make_tree
import freeode.simlparser as simlparser
import math
#parse the expression
ps = simlparser.Parser()
ex = ps.parseExpressionStr('sqrt(2)')
print
print 'AST (parser output): -----------------------------------------------'
#print aa_make_tree(ex)
#create module where names live
mod = IModule()
#create sqrt function that can be called from Siml
@signature([IFloat], IFloat)
def sqrt(x):
return IFloat(math.sqrt(x.value))
#put function into module
mod.sqrt = sqrt
print
print 'Module where function is located: ----------------------------------'
#print aa_make_tree(mod)
#create environment for lookup of variables (stack frame)
env = ExecutionEnvironment()
env.global_scope = mod
#create visitor for evaluating the expression
intp = Interpreter()
intp.push_environment(env)
#evaluate the expression
res = intp.eval(ex)
print
print 'Result object: -----------------------------------------------------'
print aa_make_tree(res)
assert res.value == math.sqrt(2)
def test_function_call_unknown_arguments_2(): #IGNORE:C01111
msg = 'Test Interpreter: call real library function with unknown argument'
#skip_test(msg)
print msg
from freeode.interpreter import Interpreter, IFloat, istype
from freeode.ast import NodeFuncCall, NodeIdentifier, RoleVariable
#create the interpreter
intp = Interpreter() #IGNORE:W0612
intp.create_test_module_with_builtins()
#create a Siml value as function argument
val_1 = IFloat()
val_1.__siml_role__ = RoleVariable
#create function call with unkown argument
call = NodeFuncCall(NodeIdentifier('sqrt'), [val_1], {})
#interpret call
ret_val = intp.eval(call)
#evaluating a function call with unknown arguments must return a function call
assert isinstance(ret_val, NodeFuncCall)
assert istype(ret_val, IFloat)
def test_expression_evaluation_2(): #IGNORE:C01111
msg = 'Test expression evaluation, all operators and brackets (only immediate values)'
#skip_test(msg)
print msg
from freeode.interpreter import Interpreter
import freeode.simlparser as simlparser
#parse the expression
ps = simlparser.Parser()
ex = ps.parseExpressionStr('(((0-1+2)*3--1)/4)**5*(-1+2*--1**4)%6')
print
print 'AST (parser output): -----------------------------------------------------------'
#print ex
#interpret the expression
intp = Interpreter()
res = intp.eval(ex)
print
print 'Result object: --------------------------------------------------------------'
#print res
assert res.value == 1
def test_expression_evaluation_1(): #IGNORE:C01111
msg = 'Test expression evaluation (only immediate values)'
#skip_test(msg)
print msg
from freeode.interpreter import Interpreter
import freeode.simlparser as simlparser
#parse the expression
ps = simlparser.Parser()
ex = ps.parseExpressionStr('0+1*2')
# print
# print 'AST (parser output): -----------------------------------------------------------'
# print ex
#interpret the expression
intp = Interpreter()
res = intp.eval(ex)
# print
# print 'Result object: --------------------------------------------------------------'
# print res
assert res.value == 2.0
def test_expression_evaluation_3(): #IGNORE:C01111
msg = 'Test expression evaluation (access to variables)'
#skip_test(msg)
print msg
from freeode.interpreter import (IModule, IFloat,
Interpreter, ExecutionEnvironment)
import freeode.simlparser as simlparser
#parse the expression
ps = simlparser.Parser()
ex = ps.parseExpressionStr('1 + a * 2')
print
print 'AST (parser output): -----------------------------------------------------------'
print ex
#create module where name lives
mod = IModule()
val_2 = IFloat(2.0)
mod.a = val_2
print
print 'Module where variable is located: --------------------------------------------'
print mod
#create environment for lookup of variables (stack frame)
env = ExecutionEnvironment()
env.global_scope = mod
#interpret the expression
intp = Interpreter()
intp.push_environment(env)
res = intp.eval(ex)
print
print 'Result object: --------------------------------------------------------------'
print res
assert res.value == 5.0