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#include <pgf/pgf.h>
#include <pgf/data.h>
#include <pgf/linearizer.h>
#include <gu/enum.h>
typedef struct {
int start, end;
PgfCId cat;
size_t lin_idx;
} PgfPhrase;
typedef struct {
PgfLinFuncs* funcs;
bool bind;
GuOut* out;
GuExn* err;
int pos;
GuBuf* marks;
GuBuf* phrases;
int found, matches;
GuPool* pool;
} PgfMetricsLznState;
static void
pgf_metrics_put_space(PgfMetricsLznState* state)
{
if (state->bind)
state->bind = false;
else {
if (state->out != NULL)
gu_putc(' ', state->out, state->err);
state->pos++;
}
}
static void
pgf_metrics_lzn_symbol_token(PgfLinFuncs** funcs, PgfToken tok)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
pgf_metrics_put_space(state);
if (state->out != NULL)
gu_string_write(tok, state->out, state->err);
state->pos += strlen(tok);
}
static void
pgf_metrics_lzn_begin_phrase(PgfLinFuncs** funcs, PgfCId cat, int fid, size_t lin_index, PgfCId fun)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
gu_buf_push(state->marks, int, state->pos);
}
static void
pgf_metrics_lzn_end_phrase1(PgfLinFuncs** funcs, PgfCId cat, int fid, size_t lin_idx, PgfCId fun)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
int start = gu_buf_pop(state->marks, int);
int end = state->pos;
if (start != end) {
PgfPhrase* phrase = gu_new(PgfPhrase, state->pool);
phrase->start = start;
phrase->end = end;
phrase->cat = cat;
phrase->lin_idx = lin_idx;
gu_buf_push(state->phrases, PgfPhrase*, phrase);
}
}
static void
pgf_metrics_symbol_ne(PgfLinFuncs** funcs)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
gu_raise(state->err, PgfLinNonExist);
}
static void
pgf_metrics_symbol_bind(PgfLinFuncs** funcs)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
state->bind = true;
}
static void
pgf_metrics_lzn_end_phrase2(PgfLinFuncs** funcs, PgfCId cat, int fid, size_t lin_idx, PgfCId fun)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
int start = gu_buf_pop(state->marks, int);
int end = state->pos;
if (start != end) {
size_t n_phrases = gu_buf_length(state->phrases);
for (size_t i = 0; i < n_phrases; i++) {
PgfPhrase* phrase = gu_buf_get(state->phrases, PgfPhrase*, i);
if (phrase->start == start &&
phrase->end == end &&
strcmp(phrase->cat, cat) == 0 &&
phrase->lin_idx == lin_idx) {
state->matches++;
break;
}
}
state->found++;
}
}
static void
pgf_metrics_lzn_symbol_meta(PgfLinFuncs** funcs, PgfMetaId meta_id)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
pgf_metrics_put_space(state);
if (state->out != NULL)
gu_putc('?', state->out, state->err);
state->pos += 1;
}
static PgfLinFuncs pgf_metrics_lin_funcs1 = {
.symbol_token = pgf_metrics_lzn_symbol_token,
.begin_phrase = pgf_metrics_lzn_begin_phrase,
.end_phrase = pgf_metrics_lzn_end_phrase1,
.symbol_ne = pgf_metrics_symbol_ne,
.symbol_bind = pgf_metrics_symbol_bind,
.symbol_capit = NULL,
.symbol_meta = pgf_metrics_lzn_symbol_meta
};
static PgfLinFuncs pgf_metrics_lin_funcs2 = {
.symbol_token = pgf_metrics_lzn_symbol_token,
.begin_phrase = pgf_metrics_lzn_begin_phrase,
.end_phrase = pgf_metrics_lzn_end_phrase2,
.symbol_ne = pgf_metrics_symbol_ne,
.symbol_bind = pgf_metrics_symbol_bind,
.symbol_capit = NULL,
.symbol_meta = pgf_metrics_lzn_symbol_meta
};
PGF_API bool
pgf_parseval(PgfConcr* concr, PgfExpr expr, PgfType* type,
double *precision, double *recall, double *exact)
{
GuPool* pool = gu_new_pool();
GuExn* err = gu_new_exn(pool);
GuEnum* en_lins1 =
pgf_lzr_concretize(concr, expr, err, pool);
if (!gu_ok(err)) {
gu_pool_free(pool);
return false;
}
PgfCncTree ctree1 = gu_next(en_lins1, PgfCncTree, pool);
if (gu_variant_is_null(ctree1)) {
gu_pool_free(pool);
return false;
}
GuStringBuf* sbuf =
gu_new_string_buf(pool);
PgfMetricsLznState state;
state.bind = true;
state.out = gu_string_buf_out(sbuf);
state.err = gu_new_exn(pool);
state.funcs = &pgf_metrics_lin_funcs1;
state.pos = 0;
state.marks = gu_new_buf(int, pool);
state.phrases = gu_new_buf(PgfPhrase*, pool);
state.matches = 0;
state.found = 0;
state.pool = pool;
pgf_lzr_linearize(concr, ctree1, 0, &state.funcs, pool);
if (!gu_ok(state.err)) {
gu_pool_free(pool);
return false;
}
GuString sentence =
gu_string_buf_freeze(sbuf, pool);
GuEnum* en_trees =
pgf_parse(concr, type, sentence,
state.err, pool, pool);
PgfExprProb* ep = gu_next(en_trees, PgfExprProb*, pool);
if (ep == NULL) {
gu_pool_free(pool);
return false;
}
GuEnum* en_lins2 =
pgf_lzr_concretize(concr, ep->expr, err, pool);
PgfCncTree ctree2 = gu_next(en_lins2, PgfCncTree, pool);
if (gu_variant_is_null(ctree2)) {
gu_pool_free(pool);
return false;
}
state.funcs = &pgf_metrics_lin_funcs2;
state.bind = true;
state.out = NULL;
state.pos = 0;
pgf_lzr_linearize(concr, ctree2, 0, &state.funcs, pool);
*precision = ((double) state.matches)/((double) state.found);
*recall = ((double) state.matches)/((double) gu_buf_length(state.phrases));
*exact = pgf_expr_eq(expr, ep->expr) ? 1 : 0;
gu_pool_free(pool);
return true;
}
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