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"""Unittests for tvm.script.parser.core"""
import pytest
import inspect
import tvm.testing
from tvm.script.parser.core.diagnostics import Source
from tvm.script.parser.core import doc_core as doc
from tvm.script import tir as T


def matmul(a: T.handle, b: T.handle, c: T.handle) -> None:
    A = T.match_buffer(a, [128, 128])
    B = T.match_buffer(b, [128, 128])
    C = T.match_buffer(c, [128, 128])
    for i, j, k in T.grid(128, 128, 128):
        with T.block("update"):
            vi, vj, vk = T.axis.remap("SSR", [i, j, k])
            C[vi, vj] = C[vi, vj] + A[vi, vk] * B[vj, vk]


def test_source_base():
    source = Source(matmul)
    assert (
        source.source_name == inspect.getsourcefile(matmul)
        and source.start_line is not None
        and source.start_column == 0
        and source.source == inspect.getsource(matmul)
        and source.full_source == inspect.getsource(inspect.getmodule(matmul))
    )


def test_source_ast():
    source = Source(matmul)
    mod = source.as_ast()
    assert isinstance(mod, doc.Module)
    func_def = mod.body[0]
    assert isinstance(func_def, doc.FunctionDef)
    assert func_def.name == "matmul"
    func_args = func_def.args
    assert (
        len(func_args.args) == 3
        and func_args.args[0].arg == "a"
        and func_args.args[1].arg == "b"
        and func_args.args[2].arg == "c"
    )
    func_body = func_def.body
    assert len(func_body) == 4
    func_assigns = func_body[:3]
    assert (
        isinstance(func_assigns[0], doc.Assign)
        and func_assigns[0].targets[0].id == "A"
        and isinstance(func_assigns[1], doc.Assign)
        and func_assigns[1].targets[0].id == "B"
        and isinstance(func_assigns[2], doc.Assign)
        and func_assigns[2].targets[0].id == "C"
    )
    func_for = func_body[3]
    assert (
        len(func_for.target.elts) == 3
        and func_for.target.elts[0].id == "i"
        and func_for.target.elts[1].id == "j"
        and func_for.target.elts[2].id == "k"
    )
    for_body = func_for.body
    assert len(for_body) == 1
    for_block = for_body[0]
    assert isinstance(for_block, doc.With) and len(for_block.body) == 2


def test_nesting_parsing():
    class dummy:
        pass

    for i in range(1):

        @tvm.script.ir_module
        class Module:
            @T.prim_func
            def impl(
                A: T.Buffer((12, 196, 64), "float32"),
            ) -> None:
                T.evaluate(0)


if __name__ == "__main__":
    tvm.testing.main()