laentropia
56c80fa071
Its a fucking mess, i was writting straight bullshit but it conceptually should work, just need to refactor the shit out of it to make it way more clean than it actually is and also later fix the fucking evaluator like damn it sucks ASSS now (not that much really is nice but obviously doesn't work, i like my code a lot :)
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
#ifndef LEXER_H
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#define LEXER_H
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#include "arraylist.h"
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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// For identifing
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typedef enum {
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NODE_INTEGER,
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NODE_BINARY_OP,
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NODE_UNARY_OP,
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NODE_PARENTHESIS,
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} ASTNodeType;
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// For classify operators
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typedef enum {
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OP_ADD,
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OP_SUB,
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OP_MUL,
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OP_DIV,
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OP_POW,
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OP_FACTORIAL,
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OP_START_PAR,
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OP_END_PAR,
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} Operator;
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typedef enum {
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LEXER_OK = 0,
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LEXER_INT_OVERFLOW,
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LEXER_FAILED_NUMBER_CONVERSION,
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LEXER_NOT_RECOGNIZED_SYMBOL,
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LEXER_EMPTY_INPUT,
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LEXER_BUF_OVERFLOW,
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} LexerErr;
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// Can be thought as tokens, they will be used by the parser.
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typedef struct ASTNode {
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ASTNodeType type;
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union {
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int64_t integer;
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struct {
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struct ASTNode *left;
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struct ASTNode *right;
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Operator op;
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} binary;
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struct {
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struct ASTNode *val;
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Operator op;
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} unary;
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struct {
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struct ASTNode *val;
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Operator op;
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} parenthesis;
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} data;
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} ASTNode;
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typedef struct {
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bool is_valid;
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union {
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LexerErr err;
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ArrayList *arr;
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};
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} TokenizeResult;
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typedef struct {
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bool is_valid;
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union {
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LexerErr err;
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ASTNode node;
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};
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} ASTNodeResult;
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typedef struct {
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bool is_valid;
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union {
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LexerErr err;
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int64_t number;
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};
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} LexerI64Result;
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// Lexer funtions as well as few functionality
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TokenizeResult tokenize(const char* input);
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ASTNodeResult tokenize_number(const char* input, size_t *offset);
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LexerI64Result string_to_integer(const char buf[]);
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bool isoperator(int c);
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Operator char_to_operator(int c);
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char operator_to_char(Operator op);
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#endif // !LEXER_H
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