88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
#ifndef UNDAR_PARSER_H
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#define UNDAR_PARSER_H
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#include "libc.h"
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#include "list.h"
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#include "lexer.h"
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#include "emit.h"
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typedef enum symbol_type_e {
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VOID,
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BOOL,
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BYTE,
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INT,
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NAT,
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REAL,
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STR,
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U8,
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I8,
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I16,
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U16,
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I32,
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U32,
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F32,
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ARRAY,
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FUNCTION,
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PLEX,
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METHOD,
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TRAIT,
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CONST
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} SymbolType;
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typedef struct symbol_s Symbol;
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typedef struct scope_s Scope;
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typedef struct parser_s Parser;
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typedef struct parse_rule_s ParseRule;
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#define MAX_SYMBOL_NAME_LENGTH 64
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struct symbol_s {
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char name[MAX_SYMBOL_NAME_LENGTH]; /* ptr to name */
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u8 name_length; /* length of the name, max 64 */
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SymbolType type; /* the type for this symbol */
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SymbolType secondary_type; /* return type for functions/methods, or const if type/plex */
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u32 ref; /* either constant value or pointer to other thing */
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u32 size; /* either size of the plex or length of the array/list/etc. */
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List *args; /* function params or plex constructor args */
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List *fields; /* either plex variable fields, or method signatures */
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};
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struct scope_s {
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Scope *parent; /* pointer to this scopes parent to "bubble up"*/
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List *symbols; /* list of symbols that live in this scope */
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};
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typedef enum {
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PREC_NONE,
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PREC_ASSIGNMENT, /* = */
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PREC_OR, /* or */
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PREC_AND, /* and */
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PREC_EQUALITY, /* == != */
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PREC_COMPARISON, /* < > <= >= */
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PREC_TERM, /* + - */
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PREC_FACTOR, /* * / */
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PREC_UNARY, /* ! - */
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PREC_CALL, /* . () */
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PREC_PRIMARY
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} Precedence;
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typedef void (*ParseFn)();
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struct parse_rule_s {
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ParseFn prefix;
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ParseFn infix;
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Precedence precedence;
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};
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struct parser_s {
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Scope *current_scope;
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Token current;
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Token previous;
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};
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bool compile(char *source);
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extern void emit_return();
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extern void emit_constant();
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#endif
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