def test_dependable_condition():
left = ast.BinNumExpr(
ast.IfExpr(
ast.CompExpr(ast.NumVal(1),
ast.NumVal(1),
ast.CompOpType.EQ),
ast.NumVal(1),
ast.NumVal(2)),
ast.NumVal(2),
ast.BinNumOpType.ADD)
right = ast.BinNumExpr(ast.NumVal(1), ast.NumVal(2), ast.BinNumOpType.DIV)
bool_test = ast.CompExpr(left, right, ast.CompOpType.GTE)
expr = ast.IfExpr(bool_test, ast.NumVal(1), ast.FeatureRef(0))
expected_code = """
func score(input []float64) float64 {
var var0 float64
var var1 float64
if (1) == (1) {
var1 = 1
} else {
var1 = 2
}
if ((var1) + (2)) >= ((1) / (2)) {
var0 = 1
} else {
var0 = input[0]
}
return var0
}"""
interpreter = interpreters.GoInterpreter()
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_bin_vector_num_expr():
expr = ast.BinVectorNumExpr(
ast.VectorVal([ast.NumVal(1), ast.NumVal(2)]),
ast.NumVal(1),
ast.BinNumOpType.MUL)
interpreter = interpreters.GoInterpreter()
expected_code = """
func addVectors(v1, v2 []float64) []float64 {
result := make([]float64, len(v1))
for i := 0; i < len(v1); i++ {
result[i] = v1[i] + v2[i]
}
return result
}
func mulVectorNumber(v1 []float64, num float64) []float64 {
result := make([]float64, len(v1))
for i := 0; i < len(v1); i++ {
result[i] = v1[i] * num
}
return result
}
func score(input []float64) []float64 {
return mulVectorNumber([]float64{1, 2}, 1)
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def __init__(self, model):
self.model = model
self.interpreter = interpreters.GoInterpreter()
assembler_cls = assemblers.get_assembler_cls(model)
self.model_ast = assembler_cls(model).assemble()
self._go = "go"
def test_raw_array():
expr = ast.VectorVal([ast.NumVal(3), ast.NumVal(4)])
expected_code = """
func score(input []float64) []float64 {
return []float64{3, 4}
}"""
interpreter = interpreters.GoInterpreter()
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def __init__(self, model):
self.model_name = "score"
self.model = model
self.interpreter = interpreters.GoInterpreter()
assembler_cls = assemblers.get_assembler_cls(model)
self.model_ast = assembler_cls(model).assemble()
self.exec_path = None
def test_exp_expr():
expr = ast.ExpExpr(ast.NumVal(1.0))
interpreter = interpreters.GoInterpreter()
expected_code = """
import "math"
func score(input []float64) float64 {
return math.Exp(1.0)
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_pow_expr():
expr = ast.PowExpr(ast.NumVal(2.0), ast.NumVal(3.0))
interpreter = interpreters.GoInterpreter()
expected_code = """
import "math"
func score(input []float64) float64 {
return math.Pow(2.0, 3.0)
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_bin_num_expr():
expr = ast.BinNumExpr(
ast.BinNumExpr(ast.FeatureRef(0), ast.NumVal(-2),
ast.BinNumOpType.DIV), ast.NumVal(2),
ast.BinNumOpType.MUL)
interpreter = interpreters.GoInterpreter()
expected_code = """
func score(input []float64) float64 {
return ((input[0]) / (-2.0)) * (2.0)
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_reused_expr():
reused_expr = ast.ExpExpr(ast.NumVal(1.0), to_reuse=True)
expr = ast.BinNumExpr(reused_expr, reused_expr, ast.BinNumOpType.DIV)
interpreter = interpreters.GoInterpreter()
expected_code = """
import "math"
func score(input []float64) float64 {
var var0 float64
var0 = math.Exp(1.0)
return (var0) / (var0)
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def export_to_go(model, indent=4):
"""
Generates a Go code representation of the given model.
Parameters
----------
model : object
The model object that should be transpiled into code.
indent : int, optional
The size of indents in the generated code.
Returns
-------
code : string
"""
interpreter = interpreters.GoInterpreter(indent=indent)
return _export(model, interpreter)
def test_nested_condition():
left = ast.BinNumExpr(
ast.IfExpr(
ast.CompExpr(ast.NumVal(1),
ast.NumVal(1),
ast.CompOpType.EQ),
ast.NumVal(1),
ast.NumVal(2)),
ast.NumVal(2),
ast.BinNumOpType.ADD)
bool_test = ast.CompExpr(ast.NumVal(1), left, ast.CompOpType.EQ)
expr_nested = ast.IfExpr(bool_test, ast.FeatureRef(2), ast.NumVal(2))
expr = ast.IfExpr(bool_test, expr_nested, ast.NumVal(2))
expected_code = """
func score(input []float64) float64 {
var var0 float64
var var1 float64
if (1) == (1) {
var1 = 1
} else {
var1 = 2
}
if (1) == ((var1) + (2)) {
var var2 float64
if (1) == (1) {
var2 = 1
} else {
var2 = 2
}
if (1) == ((var2) + (2)) {
var0 = input[2]
} else {
var0 = 2
}
} else {
var0 = 2
}
return var0
}"""
interpreter = interpreters.GoInterpreter()
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_if_expr():
expr = ast.IfExpr(
ast.CompExpr(ast.NumVal(1), ast.FeatureRef(0), ast.CompOpType.EQ),
ast.NumVal(2), ast.NumVal(3))
interpreter = interpreters.GoInterpreter()
expected_code = """
func score(input []float64) float64 {
var var0 float64
if (1.0) == (input[0]) {
var0 = 2.0
} else {
var0 = 3.0
}
return var0
}"""
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
def test_multi_output():
expr = ast.IfExpr(
ast.CompExpr(ast.NumVal(1), ast.NumVal(1), ast.CompOpType.EQ),
ast.VectorVal([ast.NumVal(1), ast.NumVal(2)]),
ast.VectorVal([ast.NumVal(3), ast.NumVal(4)]))
expected_code = """
func score(input []float64) []float64 {
var var0 []float64
if (1.0) == (1.0) {
var0 = []float64{1.0, 2.0}
} else {
var0 = []float64{3.0, 4.0}
}
return var0
}"""
interpreter = interpreters.GoInterpreter()
utils.assert_code_equal(interpreter.interpret(expr), expected_code)
