remove constants pass as it's functionality has been replicated

elsewhere

pythonbpf/codegen.py

@@ -3,7 +3,6 @@ from llvmlite import ir
 from .license_pass import license_processing
 from .functions_pass import func_proc
 from .maps_pass import maps_proc
-# from .constants_pass import constants_processing
 from .globals_pass import globals_processing
 
 
@@ -29,12 +28,9 @@ def processor(source_code, filename, module):
 
     map_sym_tab = maps_proc(tree, module, bpf_chunks)
     func_proc(tree, module, bpf_chunks, map_sym_tab)
-    # For now, we will parse the BPF specific parts of AST
 
-    # constants_processing(tree, module)
     license_processing(tree, module)
     globals_processing(tree, module)
-    # functions_processing(tree, module)
 
 
 def compile_to_ir(filename: str, output: str):

pythonbpf/constants_pass.py

@@ -1,52 +0,0 @@
-from llvmlite import ir
-import ast
-
-
-def emit_constants(module: ir.Module, constant_str: str, name: str):
-    constant_bytes = constant_str.encode("utf8") + b"\x00"
-    elems = [ir.Constant(ir.IntType(8), b) for b in constant_bytes]
-    ty = ir.ArrayType(ir.IntType(8), len(elems))
-
-    gvar = ir.GlobalVariable(module, ty, name=name)
-    print("constant emitted:", name)
-
-    gvar.initializer = ir.Constant(ty, elems)  # type: ignore
-
-    gvar.align = 1                      # type: ignore
-    gvar.linkage = "internal"           # type: ignore
-    gvar.global_constant = True
-
-    return gvar
-
-
-def constants_processing(tree, module):
-    """Process string constants in the given AST tree and emit them to rodata"""
-    constant_count = 0
-    current_function = None
-
-    class ConstantVisitor(ast.NodeVisitor):
-        def visit_FunctionDef(self, node):
-            nonlocal current_function
-            old_function = current_function
-            current_function = node.name
-            for child in ast.iter_child_nodes(node):
-                if not (hasattr(node, 'decorator_list') and child in node.decorator_list):
-                    self.visit(child)
-            current_function = old_function
-
-        def visit_Constant(self, node):
-            nonlocal constant_count
-            if isinstance(node.value, str) and current_function is not None:
-                if constant_count == 0:
-                    constant_name = f"{current_function}.____fmt"
-                else:
-                    constant_name = f"""{current_function}.____fmt.{
-                        constant_count}"""
-                emit_constants(module, node.value, constant_name)
-                constant_count += 1
-            self.generic_visit(node)
-
-    visitor = ConstantVisitor()
-    visitor.visit(tree)
-
-    return constant_count