67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/* Filename: stable.h
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* Compiler: msvc (Visual Studio 2015)
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* Function declarations for the symbol table
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* CST8152, Assignment #3
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* Professor: S^R
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* Author: Victor Fernandes, 040772243
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* Version: 0.1
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* Date: 24 March 2017
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*/
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#ifndef STABLE_H_
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#define STABLE_H_
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "buffer.h"
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/* Masks
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16-bit field MSB-> 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0 <-LSB
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0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0
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*/
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#define DFT_MASK 0xFFF8 /* Default mask */
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#define U_MASK 0x0001 /* Update mask */
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#define INT_MASK 0x0004 /* Integer mask */
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#define FLT_MASK 0x0002 /* Floating point mask */
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#define STR_MASK 0x0006 /* String mask*/
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#define CHK_MASK 0x0006 /* Type check mask */
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#define DFT_U_MASK 0xFFF9 /* Default mask with update flag */
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#define ST_FILE_NAME "$stable.ste"
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typedef union InitialValue {
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int int_val; /* Integer variable initial value */
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float fpl_val; /* Floating-point variable initial value */
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int str_offset; /* String variable initial value (location offset) */
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} Value;
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typedef struct SymbolTableVidRecord {
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unsigned short status_field; /* Variable record status field */
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char *plex; /* Pointer to lexeme (VID name) in CA (character array) */
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int o_line; /* Line of first occurence */
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Value i_value; /* Variable initial value */
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void *reserved; /* Reserved for future use, not needed right now */
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} STVR;
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typedef struct SymbolTableDescriptor {
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STVR *pstvr; /* Pointer to array of STVR */
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int st_size; /* Size in number of STVR elements */
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int st_offset; /* Offset in number of STVR elements */
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Buffer *plsBD; /* Pointer to the lexeme storage buffer descriptor */
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} STD;
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STD st_create(int);
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int st_install(STD, char*, char, int);
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int st_lookup(STD, char*);
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int st_change_type(STD, int, char);
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int st_change_value(STD, int, Value);
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char st_get_type(STD, int);
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Value st_get_value(STD, int);
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void st_destroy(STD);
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int st_print(STD);
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int st_store(STD);
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int st_sort(STD, char);
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#endif
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