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#include <pgf/pgf.h>
#include <pgf/data.h>
#include <pgf/expr.h>
#include <pgf/reader.h>
#include <pgf/linearize.h>
#include <pgf/parser.h>
#include <pgf/lexer.h>
#include <gu/file.h>
#include <gu/string.h>
#include <gu/enum.h>
#include <stdio.h>
#include <math.h>
GU_DEFINE_TYPE(PgfExn, abstract, _);
PgfPGF*
pgf_read(const char* fpath,
GuPool* pool, GuExn* err)
{
FILE* infile = fopen(fpath, "r");
if (infile == NULL) {
gu_raise_errno(err);
return NULL;
}
GuPool* tmp_pool = gu_new_pool();
// Create an input stream from the input file
GuIn* in = gu_file_in(infile, tmp_pool);
PgfReader* rdr = pgf_new_reader(in, pool, tmp_pool, err);
PgfPGF* pgf = pgf_read_new(rdr, gu_type(PgfPGF), pool, NULL);
gu_pool_free(tmp_pool);
gu_return_on_exn(err, NULL);
return pgf;
}
void
pgf_load_meta_child_probs(PgfPGF* pgf, const char* fpath,
GuPool* pool, GuExn* err)
{
FILE *fp = fopen(fpath, "r");
if (!fp) {
gu_raise_errno(err);
return;
}
GuPool* tmp_pool = gu_new_pool();
for (;;) {
char cat1_s[21];
char cat2_s[21];
prob_t prob;
if (fscanf(fp, "%20s\t%20s\t%f", cat1_s, cat2_s, &prob) < 3)
break;
prob = - log(prob);
GuString cat1 = gu_str_string(cat1_s, tmp_pool);
PgfCat* abscat1 =
gu_map_get(pgf->abstract.cats, &cat1, PgfCat*);
if (abscat1 == NULL) {
gu_raise(err, PgfExn);
goto close;
}
if (strcmp(cat2_s, "*") == 0) {
abscat1->meta_prob = prob;
} else if (strcmp(cat2_s, "_") == 0) {
abscat1->meta_token_prob = prob;
} else {
GuString cat2 = gu_str_string(cat2_s, tmp_pool);
PgfCat* abscat2 = gu_map_get(pgf->abstract.cats, &cat2, PgfCat*);
if (abscat2 == NULL) {
gu_raise(err, PgfExn);
goto close;
}
if (abscat1->meta_child_probs == NULL) {
abscat1->meta_child_probs =
gu_map_type_new(PgfMetaChildMap, pool);
}
gu_map_put(abscat1->meta_child_probs, abscat2, prob_t, prob);
}
}
close:
gu_pool_free(tmp_pool);
fclose(fp);
}
GuString
pgf_abstract_name(PgfPGF* pgf)
{
return pgf->absname;
}
void
pgf_iter_languages(PgfPGF* pgf, GuMapItor* fn, GuExn* err)
{
gu_map_iter(pgf->concretes, fn, err);
}
PgfConcr*
pgf_get_language(PgfPGF* pgf, PgfCId lang)
{
return gu_map_get(pgf->concretes, &lang, PgfConcr*);
}
void
pgf_iter_categories(PgfPGF* pgf, GuMapItor* fn, GuExn* err)
{
gu_map_iter(pgf->abstract.cats, fn, err);
}
PgfCId
pgf_start_cat(PgfPGF* pgf, GuPool* pool)
{
GuPool* tmp_pool = gu_local_pool();
GuString s = gu_str_string("startcat", tmp_pool);
PgfLiteral lit =
gu_map_get(pgf->abstract.aflags, &s, PgfLiteral);
if (gu_variant_is_null(lit))
return gu_str_string("S", pool);
GuVariantInfo i = gu_variant_open(lit);
switch (i.tag) {
case PGF_LITERAL_STR: {
PgfLiteralStr *lstr = (PgfLiteralStr *) i.data;
return lstr->val;
}
}
return gu_str_string("S", pool);
}
void
pgf_iter_functions(PgfPGF* pgf, GuMapItor* fn, GuExn* err)
{
gu_map_iter(pgf->abstract.funs, fn, err);
}
void
pgf_iter_functions_by_cat(PgfPGF* pgf, PgfCId catname,
GuMapItor* fn, GuExn* err)
{
PgfCat* abscat =
gu_map_get(pgf->abstract.cats, &catname, PgfCat*);
if (abscat == NULL) {
gu_raise(err, PgfExn);
return;
}
for (size_t i = 0; i < abscat->n_functions; i++) {
fn->fn(fn, &abscat->functions[i].fun, NULL, err);
if (!gu_ok(err))
return;
}
}
GuString
pgf_print_name(PgfConcr* concr, PgfCId id)
{
PgfCId name =
gu_map_get(concr->printnames, &id, PgfCId);
if (gu_string_eq(name, gu_empty_string))
name = id;
return name;
}
void
pgf_linearize(PgfConcr* concr, PgfExpr expr, GuWriter* wtr, GuExn* err)
{
GuPool* tmp_pool = gu_local_pool();
GuEnum* cts =
pgf_lzr_concretize(concr, expr, tmp_pool);
PgfCncTree ctree = gu_next(cts, PgfCncTree, tmp_pool);
if (!gu_variant_is_null(ctree)) {
pgf_lzr_linearize_simple(concr, ctree, 0, wtr, err);
}
gu_pool_free(tmp_pool);
}
GuEnum*
pgf_parse(PgfConcr* concr, PgfCId cat, PgfLexer *lexer, GuPool* pool)
{
// Begin parsing a sentence of the specified category
PgfParseState* state =
pgf_parser_init_state(concr, cat, 0, pool);
if (state == NULL) {
return NULL;
}
// Tokenization
GuExn* lex_err = gu_new_exn(NULL, gu_kind(type), pool);
PgfToken tok = pgf_lexer_read_token(lexer, lex_err);
while (!gu_exn_is_raised(lex_err)) {
// feed the token to get a new parse state
state = pgf_parser_next_state(state, tok, pool);
if (state == NULL) {
return NULL;
}
tok = pgf_lexer_read_token(lexer, lex_err);
}
// Now begin enumerating the resulting syntax trees
return pgf_parse_result(state, pool);
}
void
pgf_print_chunks(PgfConcr* concr, PgfCId cat, PgfLexer *lexer, GuPool* pool)
{
// Begin parsing a sentence of the specified category
PgfParseState* state =
pgf_parser_init_state(concr, cat, 0, pool);
if (state == NULL) {
printf("\n");
return;
}
// Tokenization
GuExn* lex_err = gu_new_exn(NULL, gu_kind(type), pool);
PgfToken tok = pgf_lexer_read_token(lexer, lex_err);
while (!gu_exn_is_raised(lex_err)) {
// feed the token to get a new parse state
state = pgf_parser_next_state(state, tok, pool);
if (state == NULL) {
printf("\n");
return;
}
tok = pgf_lexer_read_token(lexer, lex_err);
}
pgf_parse_print_chunks(state);
}
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