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add else if, else, and comments

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This commit is contained in:
William Bell
2025-06-03 13:57:49 +01:00
parent 18993a5d7e
commit 604839d324
8 changed files with 122 additions and 44 deletions
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133
src/parser/if/if.c
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@@ -10,54 +10,115 @@ ParsedValue *parse_if(char *file, DArray *parsed, DArray *tokens,
size_t *index) {
(*index)++;
error_if_finished(file, tokens, index);
Token *token = darray_get(tokens, *index);
if (token->type != TOKEN_LPAREN) {
fprintf(stderr,
"%s:%u:%u error: if statement requires paren for the condition\n",
file, token->line, token->column);
exit(EXIT_FAILURE);
}
(*index)++;
error_if_finished(file, tokens, index);
DArray *parsed_if = checked_malloc(sizeof(DArray));
darray_init(parsed_if, sizeof(ParsedConditional));
DArray *condition = checked_malloc(sizeof(DArray));
darray_init(condition, sizeof(ParsedValue));
while ((*index) < tokens->size) {
ParsedValue *parsed_code = parse_token(file, parsed, tokens, index, true);
if (parsed_code) {
darray_push(condition, parsed_code);
free(parsed_code);
bool expect_conditional = true;
while (*index < tokens->size) {
Token *token = darray_get(tokens, *index);
// Handle TOKEN_ELSE or TOKEN_ELSE_IF for subsequent branches
if (!expect_conditional) {
if (token->type != TOKEN_NEW_LINE)
break; // no more branches
(*index)++;
error_if_finished(file, tokens, index);
token = darray_get(tokens, *index);
if (token->type == TOKEN_ELSE || token->type == TOKEN_ELSE_IF) {
(*index)++;
error_if_finished(file, tokens, index);
} else {
break; // no more branches
}
}
token = darray_get(tokens, *index);
if (token->type == TOKEN_RPAREN)
break;
DArray *condition = NULL;
if (token->type != TOKEN_ELSE) {
// Parse ( condition )
token = darray_get(tokens, *index);
if (token->type != TOKEN_LPAREN) {
fprintf(stderr,
"%s:%u:%u error: expected '(' after if\n",
file, token->line, token->column);
exit(EXIT_FAILURE);
}
(*index)++;
error_if_finished(file, tokens, index);
condition = checked_malloc(sizeof(DArray));
darray_init(condition, sizeof(ParsedValue));
while (*index < tokens->size) {
ParsedValue *parsed_code = parse_token(file, parsed, tokens, index, true);
if (parsed_code) {
darray_push(condition, parsed_code);
free(parsed_code);
}
token = darray_get(tokens, *index);
if (token->type == TOKEN_RPAREN)
break;
}
if (token->type != TOKEN_RPAREN) {
fprintf(stderr,
"%s:%u:%u error: missing closing ')' in condition\n",
file, token->line, token->column);
exit(EXIT_FAILURE);
}
(*index)++;
error_if_finished(file, tokens, index);
}
// Parse the body
ParsedValue *parsed_content =
parse_token(file, parsed, tokens, index, false);
if (!parsed_content) {
fprintf(stderr,
"%s:%u:%u error: expected body after condition\n",
file, token->line, token->column);
exit(EXIT_FAILURE);
}
ParsedConditional conditional = {condition, parsed_content};
darray_push(parsed_if, &conditional);
expect_conditional = false; // After first iteration, expect newline + else/else if
}
if (token->type != TOKEN_RPAREN) {
fprintf(stderr,
"%s:%u:%u error: missing closing parenthesis in if condition\n",
file, token->line, token->column);
exit(EXIT_FAILURE);
}
(*index)++;
error_if_finished(file, tokens, index);
ParsedValue *parsed_content = parse_token(file, parsed, tokens, index, true);
if (!parsed_content) {
fprintf(stderr, "%s:%u:%u error: expected body after if condition\n", file,
token->line, token->column);
exit(EXIT_FAILURE);
}
ParsedConditional output_conditional = {condition, parsed_content};
darray_push(parsed_if, &output_conditional);
ParsedValue *parsedValue = checked_malloc(sizeof(ParsedValue));
parsedValue->type = AST_IF;
parsedValue->data = parsed_if;
// printf("Parsed if chain:\n");
// for (size_t i = 0; i < parsed_if->size; i++) {
// ParsedConditional *cond = darray_get(parsed_if, i);
// if (cond->condition) {
// printf(" if/else if condition:\n");
// for (size_t j = 0; j < cond->condition->size; j++) {
// ParsedValue *v = darray_get(cond->condition, j);
// printf(" - condition value type: %d\n", v->type);
// }
// } else {
// printf(" else:\n");
// }
// printf(" - content value type: %d\n", cond->content->type);
// }
return parsedValue;
}
void free_conditional(void *ptr) {
ParsedConditional *conditional = ptr;
darray_free(conditional->condition, free_parsed);
if (conditional->condition)
darray_free(conditional->condition, free_parsed);
free_parsed(conditional->content);
}