apfl/src/format.h

#ifndef APFL_FORMAT_H
#define APFL_FORMAT_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdbool.h>

#include "apfl.h"

#define FMT_TRY(x) do { if (!(x)) return false; } while (0)

struct format_spec {
    const char *name;
    bool (*callback)(void *, struct apfl_io_writer, struct apfl_string_view arg);
};

bool apfl_abstract_format(
    void *opaque,
    const struct format_spec *specs,
    struct apfl_io_writer w,
    struct apfl_string_view fmt
);

#ifdef __cplusplus
}
#endif

#endif
Add formatter abstraction for errors This will allow us to format errors as strings later by implementing a different format writer. 2022-04-21 20:01:59 +00:00			`#ifndef APFL_FORMAT_H`
			`#define APFL_FORMAT_H`

			`#ifdef __cplusplus`
			`extern "C" {`
			`#endif`

			`#include <stdbool.h>`

			`#include "apfl.h"`

apfl_debug_print_val: Use format writer abstraction 2022-06-05 20:06:33 +00:00			`#define FMT_TRY(x) do { if (!(x)) return false; } while (0)`
Push formatted parser error on stack during evaluation This way we can see the parse errors again in evaluation mode Not fully fleshed out yet: We simply use apfl_debug_print_val to dump the top of the stack (the formatted error) to stderr but don't nicely handle if there is nothing on the stack (apfl_debug_print_val will print a rather cryptic "stack index invalid" error). Also the whole dance we need to do to put the formatted error onto the stack feels rather awkward (there should probably a function for this) and we also should probably try to push an error description on the stack in case this moving-string-to-stack business fails. Now "only" all other errors need to be put on the stack as a string :) 2022-04-21 20:40:27 +00:00
Improve a bunch of error messages 2023-01-24 20:22:22 +00:00			`struct format_spec {`
			`const char *name;`
Rename format => io_writer To make it clearer that this can be used for writing binary data too. 2023-02-10 20:38:54 +00:00			`bool (callback)(void , struct apfl_io_writer, struct apfl_string_view arg);`
Improve a bunch of error messages 2023-01-24 20:22:22 +00:00			`};`

			`bool apfl_abstract_format(`
			`void *opaque,`
			`const struct format_spec *specs,`
Rename format => io_writer To make it clearer that this can be used for writing binary data too. 2023-02-10 20:38:54 +00:00			`struct apfl_io_writer w,`
Improve a bunch of error messages 2023-01-24 20:22:22 +00:00			`struct apfl_string_view fmt`
			`);`

Add formatter abstraction for errors This will allow us to format errors as strings later by implementing a different format writer. 2022-04-21 20:01:59 +00:00			`#ifdef __cplusplus`
			`}`
			`#endif`

			`#endif`