oxidize_pdf/templates/
error.rs

1use std::fmt;
2
3/// Template-specific errors
4#[derive(Debug, Clone)]
5pub enum TemplateError {
6    /// Variable not found in context
7    VariableNotFound(String),
8    /// Invalid placeholder syntax
9    InvalidPlaceholder(String),
10    /// Circular reference in variables
11    CircularReference(String),
12    /// Invalid variable name
13    InvalidVariableName(String),
14    /// Template parsing error
15    ParseError(String),
16    /// Rendering error
17    RenderError(String),
18}
19
20impl fmt::Display for TemplateError {
21    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
22        match self {
23            Self::VariableNotFound(var) => {
24                write!(f, "Variable '{}' not found in template context", var)
25            }
26            Self::InvalidPlaceholder(placeholder) => {
27                write!(f, "Invalid placeholder syntax: '{}'", placeholder)
28            }
29            Self::CircularReference(var) => {
30                write!(f, "Circular reference detected for variable '{}'", var)
31            }
32            Self::InvalidVariableName(name) => {
33                write!(f, "Invalid variable name: '{}' (must contain only alphanumeric characters, underscores, and dots)", name)
34            }
35            Self::ParseError(msg) => {
36                write!(f, "Template parsing error: {}", msg)
37            }
38            Self::RenderError(msg) => {
39                write!(f, "Template rendering error: {}", msg)
40            }
41        }
42    }
43}
44
45impl std::error::Error for TemplateError {}
46
47/// Result type for template operations
48pub type TemplateResult<T> = std::result::Result<T, TemplateError>;
49
50impl From<regex::Error> for TemplateError {
51    fn from(err: regex::Error) -> Self {
52        TemplateError::ParseError(format!("Regex error: {}", err))
53    }
54}
55
56#[cfg(test)]
57mod tests {
58    use super::*;
59
60    #[test]
61    fn test_error_display() {
62        let err = TemplateError::VariableNotFound("name".to_string());
63        assert_eq!(
64            format!("{}", err),
65            "Variable 'name' not found in template context"
66        );
67
68        let err = TemplateError::InvalidPlaceholder("{{invalid}}".to_string());
69        assert!(format!("{}", err).contains("Invalid placeholder syntax"));
70    }
71
72    #[test]
73    fn test_error_debug() {
74        let err = TemplateError::CircularReference("var1".to_string());
75        assert!(format!("{:?}", err).contains("CircularReference"));
76    }
77}
oxidize_pdf/templates/error.rs

oxidize_pdf/templates/
error.rs
