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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include <stdlib.h>
#include <string.h>
#include "llpkgc.h"
#define CALLBACK_MAYBE(PARSER, NAME) \
do { \
const llpkgc_settings_t* settings; \
settings = (const llpkgc_settings_t*) (PARSER)->settings; \
if(settings == NULL || settings->NAME == NULL) { \
err = 0; \
break; \
} \
err = settings->NAME((PARSER)); \
} while(0)
#define SPAN_CALLBACK_MAYBE(PARSER, NAME, START, LEN) \
do { \
const llpkgc_settings_t* settings; \
settings = (const llpkgc_settings_t*) (PARSER)->settings; \
if(settings == NULL || settings->NAME == NULL) { \
err = 0; \
break; \
} \
err = settings->NAME((PARSER), (START), (LEN)); \
if(err == -1) { \
err = PCE_USER; \
llpkgc_set_error_reason((PARSER), "Span callback error in " #NAME); \
} \
} while(0)
void llpkgc_init(llpkgc_t* parser, const llpkgc_settings_t* settings) {
llpkgc__internal_init(parser);
parser->settings = (void*) settings;
}
void llpkgc_reset(llpkgc_t* parser) {
llpkgc_settings_t* settings = parser->settings;
void* data = parser->data;
llpkgc__internal_init(parser);
parser->settings = settings;
parser->data = data;
}
void llpkgc_settings_init(llpkgc_settings_t* settings) {
memset(settings, 0, sizeof(*settings));
}
llpkgc_errno_t llpkgc_execute(llpkgc_t* parser, const char* data, size_t len) {
return llpkgc__internal_execute(parser, data, data + len);
}
llpkgc_errno_t llpkgc_finish(llpkgc_t* parser) {
if(parser->error != 0)
return parser->error;
int err;
// ToDo: Better handling of user callback errors here
if(parser->unfinished_ == 1) {
parser->reason = "Invalid EOF state";
parser->error = PCE_UNFINISHED;
return PCE_UNFINISHED;
} else if(parser->unfinished_ == 2) {
CALLBACK_MAYBE(parser, on_value_literal_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
CALLBACK_MAYBE(parser, on_value_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
} else if(parser->unfinished_ == 3) {
CALLBACK_MAYBE(parser, on_value_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
}
CALLBACK_MAYBE(parser, on_pkgc_complete);
return err;
}
void llpkgc_pause(llpkgc_t* parser) {
if(parser->error != PCE_OK) {
return;
}
parser->error = PCE_PAUSED;
parser->reason = "Paused";
}
void llpkgc_resume(llpkgc_t* parser) {
if(parser->error != PCE_PAUSED) {
return;
}
parser->error = 0;
}
llpkgc_errno_t llpkgc_get_errno(const llpkgc_t* parser) {
return parser->error;
}
const char* llpkgc_get_error_reason(const llpkgc_t* parser) {
return parser->reason;
}
void llpkgc_set_error_reason(llpkgc_t* parser, const char* reason) {
parser->reason = reason;
}
const char* llpkgc_get_error_pos(const llpkgc_t* parser) {
return parser->error_pos;
}
const char* llpkgc_errno_name(llpkgc_errno_t err) {
switch(err) {
case PCE_OK:
return "PCE_OK";
case PCE_INTERNAL:
return "PCE_INTERNAL";
case PCE_PAUSED:
return "PCE_PAUSED";
case PCE_USER:
return "PCE_USER";
case PCE_UNFINISHED:
return "PCE_UNFINISHED";
}
return "INVALID_ERRNO";
}
int llpkgc__line_begin(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 1;
CALLBACK_MAYBE(s, on_line_begin);
return err;
}
int llpkgc__key_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
SPAN_CALLBACK_MAYBE(s, on_key, p, endp - p);
return err;
}
int llpkgc__keyword_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_keyword_complete);
return err;
}
int llpkgc__variable_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_variable_complete);
return err;
}
int llpkgc__vallit_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
if(s->escaped_) {
--endp;
s->escaped_ = 0;
}
s->unfinished_ = 2;
SPAN_CALLBACK_MAYBE(s, on_value_literal, p, endp - p);
return err;
}
int llpkgc__vallit_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_value_literal_complete);
return err;
}
int llpkgc__valvar_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 1;
SPAN_CALLBACK_MAYBE(s, on_value_variable, p, endp - p);
return err;
}
int llpkgc__valvar_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_value_variable_complete);
return err;
}
int llpkgc__value_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 0;
CALLBACK_MAYBE(s, on_value_complete);
return err;
}
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