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- Added the ability to start a line with a number and store it for later execution

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- Added the ability to force immediate mode processing (calculator mode) by beginning a line with =
- Expanded parser testing
- Expression execution seems to be broken now, everything is returning error code 0 and not returning results
This commit is contained in:
Andrew Kesterson
2024-05-05 06:55:39 -04:00
parent 921a9dd8bd
commit 591858334b
3 changed files with 89 additions and 40 deletions
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62
src/basic.h
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@@ -1,23 +1,29 @@
#ifndef _BASIC_H_
#define _BASIC_H_
#define BASIC_OPTP_ADD 1
#define BASIC_OPTP_SUB 2
#define BASIC_OPTP_MUL 3
#define BASIC_OPTP_DIV 4
#define BASIC_OPTP_MOD 5
#define BASIC_OPTP_EQL 6
#define BASIC_OPTP_ASN 7
#define BASIC_MAX_LINES 1000
#define BASIC_MAX_LINE_LENGTH 256
#define BASIC_LVAL_EXPR 0
#define BASIC_LVAL_VAR 1
#define BASIC_LVAL_CONST 2
#define BASIC_RVAL_EXPR 3
#define BASIC_RVAL_VAR 4
#define BASIC_RVAL_CONST 5
#define BASIC_OPTP_ADD 1 /* Add */
#define BASIC_OPTP_SUB 2 /* Subtract */
#define BASIC_OPTP_MUL 3 /* Multiply */
#define BASIC_OPTP_DIV 4 /* Divide */
#define BASIC_OPTP_MOD 5 /* Modulus */
#define BASIC_OPTP_EQL 6 /* Equality test */
#define BASIC_OPTP_ASN 7 /* Assignment */
#define BASIC_OPTP_STOR 8 /* Store line for later */
#define BASIC_FOUND_LVAL 0x0001
#define BASIC_FOUND_RVAL 0x0002
#define BASIC_LVAL_EXPR 0
#define BASIC_LVAL_VAR 1
#define BASIC_LVAL_CONST 2
#define BASIC_RVAL_EXPR 3
#define BASIC_RVAL_VAR 4
#define BASIC_RVAL_CONST 5
#define BASIC_RVAL_PTR 6 /* Only used internally */
#define BASIC_PARSE_FOUND_LVAL 1
#define BASIC_PARSE_FOUND_RVAL 2
#define BASIC_PARSE_FIRSTTOKEN 4
#define BASIC_ERR_SYNTAX_MULTIPLE_LVALUES 1
#define BASIC_ERR_SYNTAX_TOKEN_LENGTH 2
@@ -34,6 +40,19 @@
#define BASIC_TOKENIZER_MAX_LENGTH 512
#define BASIC_VARNAME_MAX_LENGTH 16
struct basic_line {
int lineno;
char content[BASIC_MAX_LINE_LENGTH];
struct basic_line *nextline;
};
typedef struct basic_line basic_line;
struct basic_program {
char name[128];
basic_line *first;
};
typedef struct basic_program basic_program;
union basic_value {
char c;
int i;
@@ -67,19 +86,6 @@ struct basic_variable {
};
typedef struct basic_variable basic_variable;
struct basic_line {
int lineno;
char content[256];
struct basic_line *nextline;
};
typedef struct basic_line basic_line;
struct basic_program {
char name[128];
basic_line *first;
};
typedef struct basic_program basic_program;
#define BASIC_CONST_TRUE 1
#define BASIC_CONST_FALSE 0