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/* =========================================================================
zs_lex - the ZeroScript lexer
Copyright (c) the Contributors as noted in the AUTHORS file.
This file is part of the ZeroScript language, http://zeroscript.org.
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
=========================================================================
*/
#ifndef ZS_LEX_H_INCLUDED
#define ZS_LEX_H_INCLUDED
#include <czmq.h>
#ifdef __cplusplus
extern "C" {
#endif
// Opaque class structure
typedef struct _zs_lex_t zs_lex_t;
typedef enum {
zs_lex_function, // function name
zs_lex_compose, // function name followed by :
zs_lex_string, // string
zs_lex_number, // number expression
zs_lex_open, // open list
zs_lex_close, // close list
zs_lex_invalid, // Syntax error
zs_lex_null, // Nothing to return
zs_lex_tokens // Size of this set
} zs_lex_token_t;
// @interface
// Create a new zs_lex, return the reference if successful, or NULL
// if construction failed due to lack of available memory.
zs_lex_t *
zs_lex_new (void);
// Destroy the zs_lex and free all memory used by the object.
void
zs_lex_destroy (zs_lex_t **self_p);
// Enable verbose tracing of lexer
void
zs_lex_verbose (zs_lex_t *self, bool verbose);
// Start parsing buffer, return type of first token
zs_lex_token_t
zs_lex_first (zs_lex_t *self, const char *input);
// Continue parsing buffer, return type of next token
zs_lex_token_t
zs_lex_next (zs_lex_t *self);
// Return actual token value, if any
const char *
zs_lex_token (zs_lex_t *self);
// Return position of last processed character in text
uint
zs_lex_offset (zs_lex_t *self);
// Return number of processing cycles used so far
uint64_t
zs_lex_cycles (zs_lex_t *self);
// Self test of this class
void
zs_lex_test (bool animate);
// @end
#ifdef __cplusplus
}
#endif
#endif
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