aboutsummaryrefslogtreecommitdiff
path: root/build/lexer
diff options
context:
space:
mode:
Diffstat (limited to 'build/lexer')
-rw-r--r--build/lexer25
1 files changed, 14 insertions, 11 deletions
diff --git a/build/lexer b/build/lexer
index cf67eec..1944727 100644
--- a/build/lexer
+++ b/build/lexer
@@ -11,18 +11,14 @@
#include <exception>
#include <build/token>
+#include <build/diagnostics>
namespace build
{
- // The handler must assume the diagnostics has already been issued.
- //
- struct lexer_error: std::exception {};
-
class lexer
{
public:
- lexer (std::istream& is, const std::string& name, std::ostream& diag)
- : is_ (is), name_ (name), diag_ (diag) {}
+ lexer (std::istream& is, const std::string& name): is_ (is), fail (name) {}
token
next ();
@@ -83,16 +79,23 @@ namespace build
token
name (xchar);
- // Utilities.
+ // Diagnostics.
//
private:
- std::ostream&
- error (const xchar&);
+ struct fail_mark_base: build::fail_mark_base<failed>
+ {
+ fail_mark_base (const std::string& n): name_ (n) {}
+
+ location_prologue
+ operator() (const xchar&) const;
+
+ std::string name_;
+ };
+ typedef diag_mark<fail_mark_base> fail_mark;
private:
std::istream& is_;
- std::string name_;
- std::ostream& diag_;
+ fail_mark fail;
std::uint64_t l_ {1};
std::uint64_t c_ {1};