rbatis_codegen/codegen/syntax_tree_pysql/
string_node.rs

1use crate::codegen::syntax_tree_pysql::{Name, ToHtml};
2
3/// Represents a plain string, a SQL text segment, or a string with preserved whitespace in py_sql.
4/// This node holds parts of the SQL query that are not dynamic tags or raw text.
5///
6/// # Examples
7///
8/// PySQL syntax for simple text segments:
9/// ```py
10/// SELECT * FROM users WHERE
11/// if name != null:
12///   name = #{name}
13/// // In the above, "SELECT * FROM users WHERE " is a StringNode.
14/// ```
15///
16/// PySQL syntax for strings with preserved whitespace (using backticks - single line only):
17/// ```py
18/// ` SELECT   column1,    column2   FROM my_table  `
19/// ```
20///
21/// It also handles simple quoted strings if they are part of the py_sql structure:
22/// ```py
23/// // Example within a more complex structure (e.g., an expression):
24/// // if status == 'active':
25/// ```
26#[derive(Clone, Debug, Eq, PartialEq)]
27pub struct StringNode {
28    pub value: String,
29}
30
31impl Name for String {
32    fn name() -> &'static str {
33        "string"
34    }
35}
36
37
38impl ToHtml for StringNode {
39    fn as_html(&self) -> String {
40        if self.value.starts_with("`") && self.value.ends_with("`") {
41            self.value.to_string()
42        } else {
43            let mut v = self.value.clone();
44            v.insert(0, '`');
45            v.push('`');
46            v
47        }
48    }
49}

rbatis_codegen/codegen/syntax_tree_pysql/string_node.rs

rbatis_codegen/codegen/syntax_tree_pysql/
string_node.rs