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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "include/token.h"
#include "include/util.h"
#include "include/tree.h"
#include "include/lexer.h"
#include "include/parser.h"
parser_t* parser_init(lexer_t* lexer) {
parser_t* parser;
parser = calloc(1, sizeof(struct PARSER_STRUC));
parser->lexer = lexer;
parser->token = lexer_get_next_token(lexer);
return parser;
}
void parser_destroy(parser_t* parser) { free(parser); }
void parser_token_expect(parser_t* parser, int token) {
token == parser->token->type?
parser->token = lexer_get_next_token(parser->lexer):
die(
"unexpected token\n\ttype: [%s]\n\tvalue: [%s]",
token_get_type(parser->token->type),
parser->token->value
);
}
void parser_token_expectf(parser_t* parser, int (*expected_token)(token_t*)) {
expected_token(parser->token)?
parser->token = lexer_get_next_token(parser->lexer):
die(
"unexpected token\n\ttype: [%s]\n\tvalue: [%s]",
token_get_type(parser->token->type),
parser->token->value
);
}
tree_t* parser_parse(parser_t* parser) { return parser_parse_exprs(parser); }
tree_t* parser_parse_expr(parser_t* parser) {
switch (parser->token->type) {
case TOKEN_DEF_TAG:
return parser_parse_def(parser);
break;
case TOKEN_KEYWORD:
return parser_parse_call(parser);
break;
default:
die("BAD TOKEN"); /* TODO: make more informative error msgs */
}
return NULL; /* unreachable */
/* hopefully */
}
tree_t* parser_parse_exprs(parser_t* parser) {
tree_t* comp;
tree_t* statement;
comp = tree_init(TREE_COMP);
comp->data.comp.value = calloc(1, sizeof(struct TREE_STRUC*));
statement = parser_parse_expr(parser);
comp->data.comp.value[0] = statement;
while (parser->token->type == TOKEN_STMNT_END) {
tree_t* statement;
parser_token_expect(parser, TOKEN_STMNT_END);
statement = parser_parse_expr(parser);
comp->data.comp.size += 1;
comp->data.comp.value = realloc(
comp->data.comp.value,
comp->data.comp.size * sizeof(struct TREE_STRUC)
);
comp->data.comp.value[comp->data.comp.size - 1] = statement;
}
return comp;
}
tree_t* parser_parse_blocks(parser_t* parser) {
}
tree_t* parser_parse_block(parser_t* parser) {
}
tree_t* parser_parse_def(parser_t* parser) {
tree_t* def;
def->type = TREE_DEF;
def->data.def.name = parser->token->value;
def->data.def.
while (parser->token->type == TOKEN_DEF_TAG) {
}
}
tree_t* parser_parse_call(parser_t* parser) {
}
tree_t* parser_parse_type_str(parser_t* parser) {
tree_t* tree;
tree->type = TREE_TYPE_STR;
tree->data.type_str.value = parser->token->value;
return tree;
}
tree_t* parser_parse_type_int(parser_t* parser) {
tree_t* tree;
tree->type = TREE_TYPE_INT;
tree->data.type_int.value = strtol(parser->token->value, NULL, 10);
return tree;
}
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