new model for C++/Lua error exception-safe separation - gsl-shell.git - gsl-shell

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author	francesco-ST <francesco.abbate@st.com>	2010年12月02日 10:21:15 +0100
committer	francesco-ST <francesco.abbate@st.com>	2010年12月02日 10:21:15 +0100
commit	1002c98152dc3dabad7b251103d60a587f7aa5b1 (patch)
tree	f4710447b154d4244ac861e70c3dce5917f6e2f8 /agg-plot/agg-parse-trans.h
parent	9a2e6443e486a5b417c7e0bfbcfef15ac9e0b6d8 (diff)
download	gsl-shell-1002c98152dc3dabad7b251103d60a587f7aa5b1.tar.gz

new model for C++/Lua error exception-safe separationgsl-shell-1.0

Now all the exceptions are trapped in pure C++ functions and a status code is returned by reference to indicate success or give an error message. The C function that instruments Lua interface can call lua_error but is not supposed to catch exceptions and does not allocate auto class instance that need non-trivial destructors.

Diffstat (limited to 'agg-plot/agg-parse-trans.h')

-rw-r--r--

agg-plot/agg-parse-trans.h

1 files changed, 7 insertions, 3 deletions

diff --git a/agg-plot/agg-parse-trans.h b/agg-plot/agg-parse-trans.h
index 4b0fc3ba..cd5848f9 100644
--- a/agg-plot/agg-parse-trans.h
+++ b/agg-plot/agg-parse-trans.h

@@ -5,12 +5,13 @@ extern "C" {

#include "lua.h"

}

-#include "agg_color_rgba.h"

+#include <exception>

#include "scalable.h"

#include "drawable.h"

+#include "agg_color_rgba.h"

-class agg_spec_error {

+class agg_spec_error : public std::exception {

public:

enum err_e {

invalid_tag = 0,

@@ -22,7 +23,10 @@ public:

agg_spec_error(enum err_e err) : m_code(err) {};

agg_spec_error() : m_code(generic_error) {};

- const char * message() const { return m_msg[(int) m_code]; };

+ virtual const char* what() const throw()

+ {

+ return m_msg[(int) m_code];

+ }

private:

err_e m_code;

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