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#ifndef PGF_LINEARIZER_H_
#define PGF_LINEARIZER_H_
#include <gu/enum.h>
/// Linearization of abstract syntax trees.
/// @file
/** @}
*
* @name Enumerating concrete syntax trees
*
* Because of the \c variants construct in GF, there may be several
* possible concrete syntax trees that correspond to a given abstract
* syntax tree. These can be enumerated with #pgf_concretize.
*
* @{
*/
/// A concrete syntax tree
typedef GuVariant PgfCncTree;
/// An enumeration of #PgfCncTree trees.
typedef GuEnum PgfCncTreeEnum;
/// Begin enumerating concrete syntax variants.
PgfCncTreeEnum*
pgf_lzr_concretize(PgfConcr* concr, PgfExpr expr, GuExn* err, GuPool* pool);
typedef struct {
} PgfLinNonExist;
PgfCncTree
pgf_lzr_wrap_linref(PgfCncTree ctree, GuPool* pool);
typedef struct PgfLinFuncs PgfLinFuncs;
typedef enum {
PGF_CAPIT_NONE,
PGF_CAPIT_FIRST,
PGF_CAPIT_ALL,
PGF_CAPIT_NEXT
} PgfCapitState;
struct PgfLinFuncs
{
/// Output tokens
void (*symbol_token)(PgfLinFuncs** self, PgfToken tok);
/// Begin phrase
void (*begin_phrase)(PgfLinFuncs** self, PgfCId cat, int fid, int lindex, PgfCId fun);
/// End phrase
void (*end_phrase)(PgfLinFuncs** self, PgfCId cat, int fid, int lindex, PgfCId fun);
/// handling nonExist
void (*symbol_ne)(PgfLinFuncs** self);
/// token binding
void (*symbol_bind)(PgfLinFuncs** self);
/// capitalization
void (*symbol_capit)(PgfLinFuncs** self, PgfCapitState capit);
};
/// Linearize a concrete syntax tree.
void
pgf_lzr_linearize(PgfConcr* concr, PgfCncTree ctree, size_t lin_idx,
PgfLinFuncs** funcs, GuPool* tmp_pool);
/// Linearize a concrete syntax tree as space-separated tokens.
void
pgf_lzr_linearize_simple(PgfConcr* concr, PgfCncTree ctree, size_t lin_idx,
GuOut* out, GuExn* err,
GuPool* tmp_pool);
void
pgf_lzr_get_table(PgfConcr* concr, PgfCncTree ctree,
size_t* n_lins, GuString** labels);
#ifdef PGF_DATA_H_
// Used internally in the parser
GuString
pgf_get_tokens(PgfSymbols* sym, uint16_t sym_idx, GuPool* pool);
#endif
#endif
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