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- #ifndef INCLUDED_PARSE
- #define INCLUDED_PARSE
-
- /*
- * Copyright (c) 2005 Magnus Lind.
- *
- * This software is provided 'as-is', without any express or implied warranty.
- * In no event will the authors be held liable for any damages arising from
- * the use of this software.
- *
- * Permission is granted to anyone to use this software, alter it and re-
- * distribute it freely for any non-commercial, non-profit purpose subject to
- * the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software in a
- * product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- *
- * 2. Altered source versions must be plainly marked as such, and must not
- * be misrepresented as being the original software.
- *
- * 3. This notice may not be removed or altered from any distribution.
- *
- * 4. The names of this software and/or it's copyright holders may not be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- */
-
- #include "int.h"
- #include "vec.h"
- #include "membuf.h"
- #include "expr.h"
-
- #define ATOM_TYPE_OP_ARG_NONE 0 /* uses u.op */
- #define ATOM_TYPE_OP_ARG_U8 1 /* uses u.op */
- #define ATOM_TYPE_OP_ARG_U16 2 /* uses u.op */
- #define ATOM_TYPE_OP_ARG_I8 3 /* uses u.op */
- #define ATOM_TYPE_OP_ARG_UI8 4 /* uses u.op */
- #define ATOM_TYPE_EXPRS 12 /* uses u.exprs */
- #define ATOM_TYPE_WORD_EXPRS 10 /* uses u.exprs */
- #define ATOM_TYPE_BYTE_EXPRS 11 /* uses u.exprs */
- #define ATOM_TYPE_RES 13 /* uses u.res */
- #define ATOM_TYPE_BUFFER 14 /* uses u.buffer */
-
- struct op
- {
- struct expr *arg;
- u8 code;
- };
-
- struct res
- {
- struct expr *length;
- struct expr *value;
- };
-
- struct buffer
- {
- const char *name;
- i32 length;
- i32 skip;
- };
-
- struct atom
- {
- u8 type;
- union
- {
- struct op op;
- struct vec *exprs;
- struct buffer buffer;
- struct res res;
- } u;
- };
-
- extern int push_state_skip;
- extern int push_state_macro;
- extern int push_state_init;
- extern int num_lines;
-
- void parse_init();
- void parse_free();
-
- struct atom *new_op(u8 op_code, u8 op_size, struct expr *arg);
- struct atom *new_op0(u8 op_code);
-
- struct atom *new_exprs(struct expr *arg);
- struct atom *exprs_add(struct atom *atom, struct expr *arg);
- struct atom *exprs_to_byte_exprs(struct atom *atom);
- struct atom *exprs_to_word_exprs(struct atom *atom);
-
- struct atom *new_res(struct expr *len, struct expr *value);
- struct atom *new_incbin(const char *name, struct expr *skip, struct expr *len);
-
- struct expr *new_is_defined(const char *symbol);
- struct expr *new_expr_incword(const char *name, struct expr *skip);
-
- void new_symbol(const char *symbol, i32 value);
- void new_symbol_expr(const char *symbol, struct expr *arg);
-
- /* returns NULL if found, not otherwise, expp may be NULL. */
- const char *find_symref(const char *symbol, struct expr **expp);
-
- void symbol_dump_resolved(int level, const char *symbol);
-
- void new_label(const char *label);
- void set_org(struct expr *arg);
- void push_if_state(struct expr *arg);
- void push_macro_state(const char *name);
- void macro_append(const char *text);
- void asm_error(const char *msg);
- void asm_echo(const char *msg);
- void asm_include(const char *msg);
-
- int assemble(struct membuf *source, struct membuf *dest);
- void output_atoms(struct membuf *out, struct vec *mem);
- void asm_src_buffer_push(struct membuf *buf);
-
- #endif
-