Fix clang-format

Author: qinheping

regression/cbmc/Quantifiers1/quantifier-with-side-effect.desc

@@ -1,7 +1,7 @@
 CORE
 quantifier-with-side-effect.c
 
-^EXIT=134$
+^EXIT=(127|134)$
 ^SIGNAL=0$
 ^Invariant check failed
 ^Reason: quantifier must not contain side effects

src/ansi-c/goto-conversion/goto_clean_expr.cpp

@@ -11,132 +11,98 @@ Author: Daniel Kroening, kroening@kroening.com
 
 #include "goto_convert_class.h"
 
+#include <analyses/natural_loops.h>
+#include <unordered_map>
 #include <util/expr_util.h>
 #include <util/fresh_symbol.h>
+#include <util/mathematical_expr.h>
 #include <util/pointer_expr.h>
+#include <util/replace_expr.h>
 #include <util/std_expr.h>
 #include <util/symbol.h>
-#include <util/mathematical_expr.h>
-#include <analyses/natural_loops.h>
-#include <unordered_map>
-#include <util/replace_expr.h>
-#include <util/simplify_expr.h>
 
 #include "destructor.h"
 
-static symbol_exprt find_base_symbol(const exprt &expr)
-{
-  if(expr.id() == ID_symbol)
-  {
+static symbol_exprt find_base_symbol(const exprt &expr) {
+  if (expr.id() == ID_symbol) {
     return to_symbol_expr(expr);
-  }
-  else if(expr.id() == ID_member)
-  {
+  } else if (expr.id() == ID_member) {
     return find_base_symbol(to_member_expr(expr).struct_op());
-  }
-  else if(expr.id() == ID_index)
-  {
+  } else if (expr.id() == ID_index) {
     return find_base_symbol(to_index_expr(expr).array());
-  }
-  else if(expr.id() == ID_dereference)
-  {
+  } else if (expr.id() == ID_dereference) {
     return find_base_symbol(to_dereference_expr(expr).pointer());
-  }
-  else
-  {
+  } else {
     throw "unsupported expression type for finding base symbol";
   }
 }
 
-static exprt convert_statement_expression(
-  const quantifier_exprt &qex,
-  const code_expressiont &code,
-  const irep_idt &mode,
-  goto_convertt &converter)
-{
+static exprt convert_statement_expression(const quantifier_exprt &qex,
+                                          const code_expressiont &code,
+                                          const irep_idt &mode,
+                                          goto_convertt &converter) {
   goto_programt where;
   converter.goto_convert(code, where, mode);
   where.compute_location_numbers();
 
   natural_loops_mutablet natural_loops(where);
-  INVARIANT(
-    natural_loops.loop_map.size() == 0, "quantifier must not contain loops");
+  INVARIANT(natural_loops.loop_map.size() == 0,
+            "quantifier must not contain loops");
 
   // `last` is the instruction corresponding to the last expression in the
   // statement expression.
   goto_programt::const_targett last = where.instructions.end();
-  for(goto_programt::const_targett it = where.instructions.begin();
-      it != where.instructions.end();
-      ++it)
-  {
+  for (goto_programt::const_targett it = where.instructions.begin();
+       it != where.instructions.end(); ++it) {
     // `last` is an other-instruction.
-    if(it->is_other())
-    {
+    if (it->is_other()) {
       last = it;
     }
   }
 
-  DATA_INVARIANT(
-    last != where.instructions.end(),
-    "expression statements must contain a terminator expression");
+  DATA_INVARIANT(last != where.instructions.end(),
+                 "expression statements must contain a terminator expression");
 
   auto last_expr = to_code_expression(last->get_other()).expression();
 
-  struct pathst
-  {
+  struct pathst {
     // `paths` contains all the `targett` we are iterating over.
     std::vector<goto_programt::const_targett> paths;
     std::vector<std::pair<exprt, replace_mapt>> path_conditions_and_value_maps;
 
-    pathst(
-      std::vector<goto_programt::const_targett> paths,
-      std::vector<std::pair<exprt, replace_mapt>>
-        path_conditions_and_value_maps)
-      : paths(paths),
-        path_conditions_and_value_maps(path_conditions_and_value_maps)
-    {
-    }
+    pathst(std::vector<goto_programt::const_targett> paths,
+           std::vector<std::pair<exprt, replace_mapt>>
+               path_conditions_and_value_maps)
+        : paths(paths),
+          path_conditions_and_value_maps(path_conditions_and_value_maps) {}
 
-    bool empty()
-    {
-      return paths.empty();
-    }
+    bool empty() { return paths.empty(); }
 
-    goto_programt::const_targett &back_it()
-    {
-      return paths.back();
-    }
+    goto_programt::const_targett &back_it() { return paths.back(); }
 
-    exprt &back_path_condition()
-    {
+    exprt &back_path_condition() {
       return path_conditions_and_value_maps.back().first;
     }
 
-    replace_mapt &back_value_map()
-    {
+    replace_mapt &back_value_map() {
       return path_conditions_and_value_maps.back().second;
     }
 
-    void push_back(
-      goto_programt::const_targett target,
-      exprt path_condition,
-      replace_mapt value_map)
-    {
+    void push_back(goto_programt::const_targett target, exprt path_condition,
+                   replace_mapt value_map) {
       paths.push_back(target);
       path_conditions_and_value_maps.push_back(
-        std::make_pair(path_condition, value_map));
+          std::make_pair(path_condition, value_map));
     }
 
-    void pop_back()
-    {
+    void pop_back() {
       paths.pop_back();
       path_conditions_and_value_maps.pop_back();
     }
   };
 
-  pathst paths(
-    {1, where.instructions.begin()},
-    {1, std::make_pair(true_exprt(), replace_mapt())});
+  pathst paths({1, where.instructions.begin()},
+               {1, std::make_pair(true_exprt(), replace_mapt())});
 
   std::unordered_set<symbol_exprt, irep_hash> declared_symbols;
   // All bound variables are local.
@@ -145,36 +111,30 @@ static exprt convert_statement_expression(
   exprt res = true_exprt();
 
   // Visit the quantifier body along `paths`.
-  while(!paths.empty())
-  {
+  while (!paths.empty()) {
     auto &current_it = paths.back_it();
     auto &path_condition = paths.back_path_condition();
     auto &value_map = paths.back_value_map();
-    INVARIANT(
-      current_it != where.instructions.end(),
-      "Quantifier body must have a unique end expression.");
+    INVARIANT(current_it != where.instructions.end(),
+              "Quantifier body must have a unique end expression.");
 
-    switch(current_it->type())
-    {
+    switch (current_it->type()) {
     // Add all local-declared symbols into `declared_symbols`.
     case goto_program_instruction_typet::DECL:
       declared_symbols.insert(current_it->decl_symbol());
       break;
 
     // ASSIGN lhs := rhs
     // Add the replace lhr <- value_map(rhs) to the current value_map.
-    case goto_program_instruction_typet::ASSIGN:
-    {
+    case goto_program_instruction_typet::ASSIGN: {
       // Check that if lhs is a declared symbol.
       auto lhs = current_it->assign_lhs();
-      INVARIANT(
-        declared_symbols.count(find_base_symbol(lhs)),
-        "quantifier must not contain side effects");
+      INVARIANT(declared_symbols.count(find_base_symbol(lhs)),
+                "quantifier must not contain side effects");
       exprt rhs = current_it->assign_rhs();
       replace_expr(value_map, rhs);
       value_map[lhs] = rhs;
-    }
-    break;
+    } break;
 
     // GOTO label
     // -----------
@@ -186,24 +146,18 @@ static exprt convert_statement_expression(
     // path_condition && !cond;
     // and add a new path starting from label with path condition
     // path_condition && cond.
-    case goto_program_instruction_typet::GOTO:
-    {
-      if(!current_it->condition().is_true())
-      {
+    case goto_program_instruction_typet::GOTO: {
+      if (!current_it->condition().is_true()) {
         auto next_it = current_it->targets.front();
         exprt copy_path_condition = path_condition;
         replace_mapt copy_symbol_map = value_map;
         auto copy_condition = current_it->condition();
         path_condition =
-          and_exprt(path_condition, not_exprt(current_it->condition()));
+            and_exprt(path_condition, not_exprt(current_it->condition()));
         current_it++;
-        paths.push_back(
-          next_it,
-          and_exprt(copy_path_condition, copy_condition),
-          copy_symbol_map);
-      }
-      else
-      {
+        paths.push_back(next_it, and_exprt(copy_path_condition, copy_condition),
+                        copy_symbol_map);
+      } else {
         current_it = current_it->targets.front();
       }
       continue;
@@ -212,18 +166,15 @@ static exprt convert_statement_expression(
     // EXPRESSION(expr)
     // The last instruction is an expression statement.
     // We add the predicate path_condition ==> value_map(expr) to res.
-    case goto_program_instruction_typet::OTHER:
-    {
-      if(current_it == last)
-      {
+    case goto_program_instruction_typet::OTHER: {
+      if (current_it == last) {
         exprt copy_of_last_expr = last_expr;
         replace_expr(value_map, copy_of_last_expr);
         res = and_exprt(res, implies_exprt(path_condition, copy_of_last_expr));
         paths.pop_back();
         continue;
       }
-    }
-    break;
+    } break;
 
     // Ignored instructions.
     case goto_program_instruction_typet::ASSERT:
@@ -323,11 +274,10 @@ bool goto_convertt::needs_cleaning(const exprt &expr)
   // g1 = (i == 0)
   // g2 = (i > 10)
   // forall (i : int) (g1 || g2)
-  if(expr.id() == ID_forall || expr.id() == ID_exists)
-  {
+  if (expr.id() == ID_forall || expr.id() == ID_exists) {
     code_expressiont where{to_quantifier_expr(expr).where()};
     // Need cleaning when the quantifier body is a side-effect expression.
-    if(has_subexpr(expr, ID_side_effect))
+    if (has_subexpr(expr, ID_side_effect))
       return true;
 
     return false;
@@ -683,23 +633,19 @@ goto_convertt::clean_expr_resultt goto_convertt::clean_expr(
   {
     quantifier_exprt &qex = to_quantifier_expr(expr);
     code_expressiont code{qex.where()};
-    DATA_INVARIANT(
-      !has_subexpr(expr, ID_side_effect) ||
-        (code.operands()[0].id() == ID_side_effect &&
-         code.operands()[0].get_named_sub()[ID_statement].id() ==
-           ID_statement_expression),
-      "quantifier must not contain side effects");
+    DATA_INVARIANT(!has_subexpr(expr, ID_side_effect) ||
+                       (code.operands()[0].id() == ID_side_effect &&
+                        code.operands()[0].get_named_sub()[ID_statement].id() ==
+                            ID_statement_expression),
+                   "quantifier must not contain side effects");
 
     // Handle the case that quantifier body is a statement expression.
-    if(
-      code.operands()[0].id() == ID_side_effect &&
-      code.operands()[0].get_named_sub()[ID_statement].id() ==
-        ID_statement_expression)
-    {
+    if (code.operands()[0].id() == ID_side_effect &&
+        code.operands()[0].get_named_sub()[ID_statement].id() ==
+            ID_statement_expression) {
       auto res = convert_statement_expression(qex, code, mode, *this);
       qex.where() = res;
       return clean_expr(res, mode, result_is_used);
-    }
   }
   else if(expr.id() == ID_address_of)
   {