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#
#   http://www.apache.org/licenses/LICENSE-2.0
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"""Bridge from synr's (the library used for parsing the python AST)
   DiagnosticContext to TVM's diagnostics
"""
import tvm
from synr import DiagnosticContext, ast
from tvm.ir.diagnostics import DiagnosticContext as TVMCtx
from tvm.ir.diagnostics import get_renderer, DiagnosticLevel, Diagnostic


class TVMDiagnosticCtx(DiagnosticContext):
    """TVM diagnostics for synr"""

    diag_ctx: TVMCtx

    def __init__(self) -> None:
        self.diag_ctx = TVMCtx(tvm.IRModule(), get_renderer())
        self.source_name = None

    def to_tvm_span(self, src_name, ast_span: ast.Span) -> tvm.ir.Span:
        return tvm.ir.Span(
            src_name,
            ast_span.start_line,
            ast_span.end_line,
            ast_span.start_column,
            ast_span.end_column,
        )

    def add_source(self, name: str, source: str) -> None:
        src_name = self.diag_ctx.module.source_map.add(name, source)
        self.source_name = src_name

    def emit(self, _level, message, span):
        span = self.to_tvm_span(self.source_name, span)
        self.diag_ctx.emit(Diagnostic(DiagnosticLevel.ERROR, span, message))
        self.diag_ctx.render()  # Raise exception on the first error we hit. TODO remove

    def render(self):
        self.diag_ctx.render()
