Centralize the small helpers that lowering uses to raise structured
diagnostic exceptions instead of ad hoc Exception strings.
Functions:
lowered_value_type_name(value: Value | None) -> str
Source code in src/irx/builder/diagnostics.py
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58 | @typechecked
def lowered_value_type_name(value: ir.Value | None) -> str:
"""
title: Return one lowered LLVM value type name.
parameters:
value:
type: ir.Value | None
returns:
type: str
"""
if value is None:
return "<missing>"
return str(value.type)
|
raise_lowering_error(
message: str,
*,
code: str,
node: AST | None = None,
notes: tuple[str, ...] = (),
hint: str | None = None,
cause: Exception | None = None,
) -> NoReturn
Source code in src/irx/builder/diagnostics.py
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100 | @typechecked
def raise_lowering_error(
message: str,
*,
code: str,
node: astx.AST | None = None,
notes: tuple[str, ...] = (),
hint: str | None = None,
cause: Exception | None = None,
) -> NoReturn:
"""
title: Raise one user-facing lowering diagnostic.
parameters:
message:
type: str
code:
type: str
node:
type: astx.AST | None
notes:
type: tuple[str, Ellipsis]
hint:
type: str | None
cause:
type: Exception | None
returns:
type: NoReturn
"""
raise LoweringError(
Diagnostic(
message=message,
node=node,
module_key=get_node_module_key(node),
code=code,
phase="lowering",
notes=notes,
hint=hint,
cause=cause,
)
)
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raise_lowering_internal_error(
message: str,
*,
node: AST | None = None,
code: str = LOWERING_MISSING_SEMANTIC_METADATA,
notes: tuple[str, ...] = (),
hint: str | None = None,
cause: Exception | None = None,
) -> NoReturn
Source code in src/irx/builder/diagnostics.py
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138 | @typechecked
def raise_lowering_internal_error(
message: str,
*,
node: astx.AST | None = None,
code: str = DiagnosticCodes.LOWERING_MISSING_SEMANTIC_METADATA,
notes: tuple[str, ...] = (),
hint: str | None = None,
cause: Exception | None = None,
) -> NoReturn:
"""
title: Raise one internal lowering consistency diagnostic.
parameters:
message:
type: str
node:
type: astx.AST | None
code:
type: str
notes:
type: tuple[str, Ellipsis]
hint:
type: str | None
cause:
type: Exception | None
returns:
type: NoReturn
"""
raise_lowering_error(
f"internal compiler error: {message}",
code=code,
node=node,
notes=notes,
hint=hint,
cause=cause,
)
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require_lowered_value(
value: Value | None, *, node: AST, context: str
) -> Value
Source code in src/irx/builder/diagnostics.py
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197 | @typechecked
def require_lowered_value(
value: ir.Value | None,
*,
node: astx.AST,
context: str,
) -> ir.Value:
"""
title: Require one lowered LLVM value during lowering.
parameters:
value:
type: ir.Value | None
node:
type: astx.AST
context:
type: str
returns:
type: ir.Value
"""
if value is None:
raise_lowering_internal_error(
f"{context} did not lower to a value",
node=node,
notes=(f"semantic type: {resolved_ast_type_name(node)}",),
)
return value
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require_semantic_metadata(
value: T | None,
*,
node: AST,
metadata: str,
context: str,
) -> T
Source code in src/irx/builder/diagnostics.py
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169 | @typechecked
def require_semantic_metadata(
value: T | None,
*,
node: astx.AST,
metadata: str,
context: str,
) -> T:
"""
title: Require one semantic sidecar field during lowering.
parameters:
value:
type: T | None
node:
type: astx.AST
metadata:
type: str
context:
type: str
returns:
type: T
"""
if value is None:
raise_lowering_internal_error(
f"missing {metadata} metadata during {context}",
node=node,
notes=(f"semantic type: {resolved_ast_type_name(node)}",),
)
return value
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resolved_ast_type_name(node: AST | None) -> str
Source code in src/irx/builder/diagnostics.py
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43 | @typechecked
def resolved_ast_type_name(node: astx.AST | None) -> str:
"""
title: Return one node's best-effort semantic type name.
parameters:
node:
type: astx.AST | None
returns:
type: str
"""
if node is None:
return "<unknown>"
semantic = getattr(node, "semantic", None)
resolved_type = getattr(semantic, "resolved_type", None)
if isinstance(resolved_type, astx.DataType):
return display_type_name(resolved_type)
return display_type_name(getattr(node, "type_", None))
|