| // go-diagnostics.h -- interface to diagnostic reporting -*- C++ -*- |
| |
| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| #ifndef GO_DIAGNOSTICS_H |
| #define GO_DIAGNOSTICS_H |
| |
| #include "go-linemap.h" |
| |
| #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) |
| #define GO_ATTRIBUTE_GCC_DIAG(m, n) __attribute__ ((__format__ (__gcc_tdiag__, m, n))) __attribute__ ((__nonnull__ (m))) |
| #else |
| #define GO_ATTRIBUTE_GCC_DIAG(m, n) |
| #endif |
| |
| // These declarations define the interface through which the frontend |
| // reports errors and warnings. These functions accept printf-like |
| // format specifiers (e.g. %d, %f, %s, etc), with the following additional |
| // extensions: |
| // |
| // 1. 'q' qualifier may be applied to a specifier to add quoting, e.g. |
| // %qd produces a quoted decimal output, %qs a quoted string output. |
| // [This extension is supported only with single-character format |
| // specifiers]. |
| // |
| // 2. %m specifier outputs value of "strerror(errno)" at time of call. |
| // |
| // 3. %< outputs an opening quote, %> a closing quote. |
| // |
| // All other format specifiers are as defined by 'sprintf'. The final resulting |
| // message is then sent to the back end via go_be_error_at/go_be_warning_at. |
| |
| extern void go_error_at(const Location, const char* fmt, ...) |
| GO_ATTRIBUTE_GCC_DIAG(2,3); |
| extern void go_warning_at(const Location, int opt, const char* fmt, ...) |
| GO_ATTRIBUTE_GCC_DIAG(3,4); |
| extern void go_fatal_error(const Location, const char* fmt, ...) |
| GO_ATTRIBUTE_GCC_DIAG(2,3); |
| extern void go_inform(const Location, const char* fmt, ...) |
| GO_ATTRIBUTE_GCC_DIAG(2,3); |
| |
| // These interfaces provide a way for the front end to ask for |
| // the open/close quote characters it should use when formatting |
| // diagnostics (warnings, errors). |
| extern const char* go_open_quote(); |
| extern const char* go_close_quote(); |
| |
| // These interfaces are used by utilities above to pass warnings and |
| // errors (once format specifiers have been expanded) to the back end, |
| // and to determine quoting style. Avoid calling these routines directly; |
| // instead use the equivalent routines above. The back end is required to |
| // implement these routines. |
| |
| extern void go_be_error_at(const Location, const std::string& errmsg); |
| extern void go_be_warning_at(const Location, int opt, |
| const std::string& warningmsg); |
| extern void go_be_fatal_error(const Location, const std::string& errmsg); |
| extern void go_be_inform(const Location, const std::string& infomsg); |
| extern void go_be_get_quotechars(const char** open_quote, |
| const char** close_quote); |
| |
| #endif // !defined(GO_DIAGNOSTICS_H) |