def havoc_var(viper_ast: ViperAST, viper_type, ctx: Context):
if ctx.is_pure_function:
pure_idx = ctx.next_pure_var_index()
function_result = viper_ast.Result(struct_type(viper_ast))
return struct_get_idx(viper_ast, function_result, pure_idx, viper_type)
else:
havoc_name = ctx.new_local_var_name('havoc')
havoc = viper_ast.LocalVarDecl(havoc_name, viper_type)
ctx.new_local_vars.append(havoc)
return havoc.localVar()
def first_public_state_var(viper_ast: ViperAST, pos=None, info=None):
return viper_ast.LocalVarDecl(mangled.FIRST_PUBLIC_STATE, viper_ast.Bool,
pos, info)
def overflow_var(viper_ast: ViperAST, pos=None, info=None):
return viper_ast.LocalVarDecl(mangled.OVERFLOW, viper_ast.Bool, pos, info)
def out_of_gas_var(viper_ast: ViperAST, pos=None, info=None):
return viper_ast.LocalVarDecl(mangled.OUT_OF_GAS, viper_ast.Bool, pos,
info)
def msg_var(viper_ast: ViperAST, pos=None, info=None):
return viper_ast.LocalVarDecl(mangled.MSG, viper_ast.Ref, pos, info)