def test_Scope():
assign = Assignment(x, y)
incr = AddAugmentedAssignment(x, 1)
scp = Scope([assign, incr])
cblk = CodeBlock(assign, incr)
assert scp.body == cblk
assert scp == Scope(cblk)
assert scp != Scope([incr, assign])
assert scp.func(*scp.args) == scp
def test_Scope():
assign = Assignment(x, y)
incr = AddAugmentedAssignment(x, 1)
scp = Scope([assign, incr])
cblk = CodeBlock(assign, incr)
assert scp.body == cblk
assert scp == Scope(cblk)
assert scp != Scope([incr, assign])
assert scp.func(*scp.args) == scp
def test_ccode_codegen_ast():
assert ccode(Comment("this is a comment")) == "// this is a comment"
assert ccode(While(abs(x) > 1,
[aug_assign(x, '-', 1)])) == ('while (fabs(x) > 1) {\n'
' x -= 1;\n'
'}')
assert ccode(Scope([AddAugmentedAssignment(x, 1)])) == ('{\n'
' x += 1;\n'
'}')
inp_x = Declaration(Variable(x, type=real))
assert ccode(FunctionPrototype(real, 'pwer',
[inp_x])) == 'double pwer(double x)'
assert ccode(
FunctionDefinition(
real, 'pwer', [inp_x],
[Assignment(x, x**2)])) == ('double pwer(double x){\n'
' x = pow(x, 2);\n'
'}')
# Elements of CodeBlock are formatted as statements:
block = CodeBlock(
x,
Print([x, y], "%d %d"),
FunctionCall('pwer', [x]),
Return(x),
)
assert ccode(block) == '\n'.join([
'x;',
'printf("%d %d", x, y);',
'pwer(x);',
'return x;',
])
def test_ccode_codegen_ast():
assert ccode(Comment("this is a comment")) == "// this is a comment"
assert ccode(While(abs(x) > 1, [aug_assign(x, "-", 1)])) == (
"while (fabs(x) > 1) {\n" " x -= 1;\n" "}"
)
assert ccode(Scope([AddAugmentedAssignment(x, 1)])) == ("{\n" " x += 1;\n" "}")
inp_x = Declaration(Variable(x, type=real))
assert ccode(FunctionPrototype(real, "pwer", [inp_x])) == "double pwer(double x)"
assert ccode(
FunctionDefinition(real, "pwer", [inp_x], [Assignment(x, x ** 2)])
) == ("double pwer(double x){\n" " x = pow(x, 2);\n" "}")
# Elements of CodeBlock are formatted as statements:
block = CodeBlock(x, Print([x, y], "%d %d"), FunctionCall("pwer", [x]), Return(x),)
assert ccode(block) == "\n".join(
["x;", 'printf("%d %d", x, y);', "pwer(x);", "return x;",]
)
def test_ccode_codegen_ast():
# Note that C only allows comments of the form /* ... */, double forward
# slash is not standard C, and some C compilers will grind to a halt upon
# encountering them.
assert ccode(
Comment("this is a comment")) == "/* this is a comment */" # not //
assert ccode(While(abs(x) > 1,
[aug_assign(x, '-', 1)])) == ('while (fabs(x) > 1) {\n'
' x -= 1;\n'
'}')
assert ccode(Scope([AddAugmentedAssignment(x, 1)])) == ('{\n'
' x += 1;\n'
'}')
inp_x = Declaration(Variable(x, type=real))
assert ccode(FunctionPrototype(real, 'pwer',
[inp_x])) == 'double pwer(double x)'
assert ccode(
FunctionDefinition(
real, 'pwer', [inp_x],
[Assignment(x, x**2)])) == ('double pwer(double x){\n'
' x = pow(x, 2);\n'
'}')
# Elements of CodeBlock are formatted as statements:
block = CodeBlock(
x,
Print([x, y], "%d %d"),
FunctionCall('pwer', [x]),
Return(x),
)
assert ccode(block) == '\n'.join([
'x;',
'printf("%d %d", x, y);',
'pwer(x);',
'return x;',
])
