format_type can now format range_typet

This adds formatting for range_typet as { from, ..., to }.

Author: kroening

src/util/format_type.cpp

@@ -98,6 +98,12 @@ std::ostream &format_rec(std::ostream &os, const typet &type)
     return os << "\xe2\x84\xa4"; // u+2124, 'Z'
   else if(id == ID_natural)
     return os << "\xe2\x84\x95"; // u+2115, 'N'
+  else if(id == ID_range)
+  {
+    auto &range_type = to_range_type(type);
+    return os << "{ " << range_type.get_from() << ", ..., "
+              << range_type.get_to() << " }";
+  }
   else if(id == ID_rational)
     return os << "\xe2\x84\x9a"; // u+211A, 'Q'
   else if(id == ID_mathematical_function)

unit/Makefile

@@ -144,6 +144,7 @@ SRC += analyses/ai/ai.cpp \
        util/format.cpp \
        util/format_expr.cpp \
        util/format_number_range.cpp \
+       util/format_type.cpp \
        util/get_base_name.cpp \
        util/graph.cpp \
        util/help_formatter.cpp \

unit/util/format_type.cpp

@@ -0,0 +1,19 @@
+/*******************************************************************\
+
+ Module: Unit tests for `format` function on types
+
+ Author: Daniel Kroening, [email protected]
+
+\*******************************************************************/
+
+#include <util/format.h>
+#include <util/format_type.h>
+#include <util/std_expr.h>
+
+#include <testing-utils/use_catch.h>
+
+TEST_CASE("Format a range type", "[core][util][format_type]")
+{
+  auto type = range_typet(1, 10);
+  REQUIRE(format_to_string(type) == "{ 1, ..., 10 }");
+}