Function AST_ToString

src/ast/ast.c:677–709

}

const char *AST_ToString
(
	const cypher_astnode_t *node
) {
	QueryCtx *ctx = QueryCtx_GetQueryCtx();
	AST *ast = QueryCtx_GetAST();
	AnnotationCtx *to_string_ctx = AST_AnnotationCtxCollection_GetToStringCtx(ast->anot_ctx_collection);

	char *str = (char *)cypher_astnode_get_annotation(to_string_ctx, node);
	if(str == NULL) {
		cypher_astnode_type_t t = cypher_astnode_type(node);
		const cypher_astnode_t *ast_identifier = NULL;
		if(t == CYPHER_AST_NODE_PATTERN) {
			ast_identifier = cypher_ast_node_pattern_get_identifier(node);
		} else if(t == CYPHER_AST_REL_PATTERN) {
			ast_identifier = cypher_ast_rel_pattern_get_identifier(node);
		} else {
			struct cypher_input_range range = cypher_astnode_range(node);
			uint length = range.end.offset - range.start.offset + 1;
			str = malloc(sizeof(char) * length);
			strncpy(str, ctx->query_data.query_no_params + range.start.offset, length - 1);
			str[length - 1] = '\0';
		}
		if(ast_identifier) {
			// Graph entity has a user-defined alias return it.
			return cypher_ast_identifier_get_name(ast_identifier);
		} else if(str == NULL) {
			str = _create_anon_alias(ast->anot_ctx_collection->anon_count++);
		}
		cypher_astnode_attach_annotation(to_string_ctx, node, (void *)str, NULL);
	}
	return str;
}

cypher_parse_result_t *parse_query
(