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use crate::directive::Directive;
use crate::macros::{MacroCall, MacroDef};
use erl_tokenize::tokens::SymbolToken;
use erl_tokenize::{LexicalToken, Position, PositionRange};
use std::path::{Path, PathBuf};
#[derive(Debug, thiserror::Error)]
#[non_exhaustive]
#[allow(missing_docs)]
#[allow(clippy::large_enum_variant)]
pub enum Error {
#[error("expected a {expected:?} token, but found {token:?}")]
UnexpectedToken {
token: LexicalToken,
expected: String,
},
#[error("cannot include file: path={target_file_path:?}, reason={source}")]
IncludeFileError {
source: std::io::Error,
directive_start: Position,
directive_end: Position,
target_file_path: PathBuf,
},
#[error("expected an macro argument before ',' ({position})")]
MissingMacroArg { position: Position },
#[error("unbalanced parentheses: open={open:?}, close={close:?}")]
UnbalancedParen {
open: Option<SymbolToken>,
close: SymbolToken,
},
#[error("unexpected EOF")]
UnexpectedEof,
#[error("cannot expand ?FILE macro ({macro_call:?})")]
FileNotSet { macro_call: MacroCall },
#[error("undefined macro: {macro_call:?}")]
UndefinedMacro { macro_call: MacroCall },
#[error("no such macro variable: {varname:?}")]
UndefinedMacroVar { varname: String },
#[error("macro arguments mismatched: def={macro_def:?}, call={macro_call:?}")]
MacroArgsMismatched {
macro_call: MacroCall,
macro_def: MacroDef,
},
#[error("cannot convert a path {path:?} to a UTF-8 string")]
NonUtf8Path { path: PathBuf },
#[error("found unexpected '.' in `-define` directive ({position})")]
UnexpectedDotInMacroDef { position: Position },
#[error("missing `-ifdef` or `ifndef` directives")]
MissingIfDirective { directive: Directive },
#[error(transparent)]
TokenizeError(#[from] erl_tokenize::Error),
#[error(transparent)]
GlobPatternError(#[from] glob::PatternError),
#[error(transparent)]
GlobError(#[from] glob::GlobError),
}
impl Error {
pub(crate) fn unexpected_token(token: LexicalToken, expected: &str) -> Self {
Self::UnexpectedToken {
token,
expected: expected.to_owned(),
}
}
pub(crate) fn include_file_error(
source: std::io::Error,
directive: &impl PositionRange,
target_file_path: PathBuf,
) -> Self {
Self::IncludeFileError {
source,
directive_start: directive.start_position(),
directive_end: directive.end_position(),
target_file_path,
}
}
pub(crate) fn missing_macro_arg(position: Position) -> Self {
Self::MissingMacroArg { position }
}
pub(crate) fn unbalanced_paren(open: Option<SymbolToken>, close: SymbolToken) -> Self {
Self::UnbalancedParen { open, close }
}
pub(crate) fn file_not_set(macro_call: MacroCall) -> Self {
Self::FileNotSet { macro_call }
}
pub(crate) fn undefined_macro(macro_call: MacroCall) -> Self {
Self::UndefinedMacro { macro_call }
}
pub(crate) fn non_utf8_path(path: impl AsRef<Path>) -> Self {
Self::NonUtf8Path {
path: path.as_ref().to_path_buf(),
}
}
pub(crate) fn unexpected_dot_in_macro_def(token: &LexicalToken) -> Self {
Self::UnexpectedDotInMacroDef {
position: token.start_position(),
}
}
pub(crate) fn macro_args_mismatched(macro_call: MacroCall, macro_def: MacroDef) -> Self {
Self::MacroArgsMismatched {
macro_call,
macro_def,
}
}
pub(crate) fn undefined_macro_var(varname: String) -> Self {
Self::UndefinedMacroVar { varname }
}
pub(crate) fn missing_if_directive(directive: Directive) -> Self {
Self::MissingIfDirective { directive }
}
}