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check out how to use the GDB Python pretty-printers

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Yes, it works with GDB 7.1 from Debian/Squeeze
This commit is contained in:
Fischlurch 2010-04-09 07:44:31 +02:00
parent b998935d6f
commit 560612d467
1 changed files with 15 additions and 54 deletions
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69
src/tool/try.cpp
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@ -15,6 +15,7 @@
// 6/09 - investigating how to build a mixin template providing an operator bool()
// 12/9 - tracking down a strange "warning: type qualifiers ignored on function return type"
// 1/10 - can we determine at compile time the presence of a certain function (for duck-typing)?
// 4/10 - pretty printing STL containers with python enabled GDB?
//#include <nobug.h>
@ -25,6 +26,7 @@
#include <iostream>
//#include <typeinfo>
#include <string>
#include <vector>
#include <cstdlib>
#include <cstdio>
@ -36,68 +38,27 @@ using std::cout;
using std::endl;
struct A
{
int& funA ();
};
struct B
{
void funA();
};
typedef char Yes_t;
struct No_t { char padding[8]; };
template<typename TY>
class Detector1
{
template<typename X, int i = sizeof(&X::funA)>
struct Probe
{ };
template<class X>
static Yes_t check(Probe<X>*);
template<class>
static No_t check(...);
public:
static const bool value = (sizeof(Yes_t)==sizeof(check<TY>(0)));
};
template<typename TY>
class Detector2
{
template<typename X, int& (X::*)(void)>
struct Probe
{ };
template<class X>
static Yes_t check(Probe<X,&X::funA>*);
template<class>
static No_t check(...);
public:
static const bool value = (sizeof(Yes_t)==sizeof(check<TY>(0)));
};
int
main (int, char**)
{
// NOBUG_INIT;
cout << "Detector1<A> = " << Detector1<A>::value << endl;
cout << "Detector1<B> = " << Detector1<B>::value << endl;
std::string str = "hullo wöld";
std::vector<int> vec (1000);
cout << "Detector2<A> = " << Detector2<A>::value << endl;
cout << "Detector2<B> = " << Detector2<B>::value << endl;
for (uint i = 0; i < vec.size(); ++i)
vec[i] = i;
cout << "\n.gulp.\n";
cout << str << "\n.gulp.\n";
// Note: when selecting the string or the vector in the Eclipse variables view
// (or when issuing "print str" at the GDB prompt), the GDB python pretty-printer
// should be activated. Requires an python enabled GDB (>6.8.50). Debian/Lenny isn't enough,
// but compiling the GDB package from Debian/Squeeze (GDB-7.1) is straightforward.
// Moreover, you need to check out and install the python pretty-printers and
// you need to activate them through your ~/.gdbinit
// see http://sourceware.org/gdb/wiki/STLSupport
return 0;
}