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//! Error types for sigil-stitch.
use snafu::prelude::*;
/// Errors returned by sigil-stitch operations.
#[derive(Debug, Snafu)]
#[snafu(visibility(pub(crate)))]
#[non_exhaustive]
pub enum SigilStitchError {
/// Format string argument count mismatch.
#[snafu(display(
"format string {format:?} expects {expected} args but got {actual}\n \
specifiers: {expected_specifiers:?}\n \
arg kinds: {actual_arg_kinds:?}"
))]
FormatArgCount {
/// The format string that was passed.
format: String,
/// Number of argument slots in the format string.
expected: usize,
/// Number of arguments actually provided.
actual: usize,
/// The sequence of specifier names from the format string (e.g., `["%T", "%S", "%L"]`).
expected_specifiers: Vec<String>,
/// The variant names of the provided args (e.g., `["TypeName", "Literal", "Literal"]`).
actual_arg_kinds: Vec<String>,
},
/// A required name or filename field was empty.
#[snafu(display("{builder}::build() failed: 'name' must not be empty"))]
EmptyName {
/// The builder type that detected the error.
builder: &'static str,
},
/// Unbalanced begin_control_flow / end_control_flow calls.
#[snafu(display(
"unbalanced control flow: indent depth is {depth} (expected 0). \
Check begin_control_flow / end_control_flow calls."
))]
UnbalancedIndent {
/// The indent depth at build time.
depth: i32,
},
/// Error during code rendering.
#[snafu(display("{context}: {message}"))]
Render {
/// What was being rendered.
context: String,
/// The error message.
message: String,
},
/// Error in template parsing or application.
#[snafu(display("template error: {message}"))]
Template {
/// The error message.
message: String,
},
/// I/O error (e.g., writing project files).
#[snafu(display("{context}"))]
Io {
/// The underlying I/O error.
source: std::io::Error,
/// What was being done when the error occurred.
context: String,
},
/// Module path validation failure.
#[snafu(display("invalid module path: {message}"))]
InvalidModulePath {
/// The error message.
message: String,
},
/// Invalid format specifier in a format string.
#[snafu(display("invalid format specifier '%{specifier}' in format string {format:?}"))]
InvalidFormatSpecifier {
/// The format string that contained the invalid specifier.
format: String,
/// The unrecognized character after `%`.
specifier: char,
},
/// Duplicate field name in a type specification.
#[snafu(display("duplicate field name {field_name:?} in type {type_name:?}"))]
DuplicateFieldName {
/// The name of the type that contains the duplicate.
type_name: String,
/// The duplicated field name.
field_name: String,
},
}