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Fix usage of local_sym_tab in expr_pass

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This commit is contained in:
Pragyansh Chaturvedi
2025-10-02 04:50:31 +05:30
parent 0142381ce2
commit d7427f306f
2 changed files with 8 additions and 9 deletions
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14
pythonbpf/expr_pass.py
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@ -14,9 +14,9 @@ def eval_expr(
print(f"Evaluating expression: {ast.dump(expr)}")
if isinstance(expr, ast.Name):
if expr.id in local_sym_tab:
var = local_sym_tab[expr.id][0]
var = local_sym_tab[expr.id].var
val = builder.load(var)
return val, local_sym_tab[expr.id][1] # return value and type
return val, local_sym_tab[expr.id].ir_type # return value and type
else:
print(f"Undefined variable {expr.id}")
return None
@ -49,7 +49,7 @@ def eval_expr(
return None
if isinstance(arg, ast.Name):
if arg.id in local_sym_tab:
arg = local_sym_tab[arg.id][0]
arg = local_sym_tab[arg.id].var
else:
print(f"Undefined variable {arg.id}")
return None
@ -58,7 +58,7 @@ def eval_expr(
return None
# Since we are handling only name case, directly take type from sym tab
val = builder.load(arg)
return val, local_sym_tab[expr.args[0].id][1]
return val, local_sym_tab[expr.args[0].id].ir_type
# check for helpers
if HelperHandlerRegistry.has_handler(expr.func.id):
@ -106,10 +106,10 @@ def eval_expr(
var_name = expr.value.id
attr_name = expr.attr
if var_name in local_sym_tab:
var_ptr, var_type = local_sym_tab[var_name]
print(f"Loading attribute " f"{attr_name} from variable {var_name}")
var_ptr, var_type, var_metadata = local_sym_tab[var_name]
print(f"Loading attribute {attr_name} from variable {var_name}")
print(f"Variable type: {var_type}, Variable ptr: {var_ptr}")
metadata = structs_sym_tab[local_sym_tab[var_name].metadata]
metadata = structs_sym_tab[var_metadata]
if attr_name in metadata.fields:
gep = metadata.gep(builder, var_ptr, attr_name)
val = builder.load(gep)