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use crate::*;
pub enum SyntacticToken {
LabelDefinition(ScopedSymbol),
MacroDefinition(SyntacticMacroDefinition),
IntegerLiteral(isize),
StringLiteral(StringLiteral),
WordTemplate(WordTemplate),
BlockLiteral(Vec<Tracked<SyntacticToken>>),
Expression(Vec<Tracked<SyntacticToken>>),
Symbol(ScopedSymbol),
Separator,
Condition,
Pin,
}
pub struct SyntacticMacroDefinition {
pub name: Tracked<String>,
pub body: Vec<Tracked<SyntacticToken>>,
}
#[derive(Clone)]
pub struct StringLiteral {
pub string: String,
pub chars: Vec<Tracked<isize>>,
}
impl std::fmt::Display for StringLiteral {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
self.string.fmt(f)
}
}
pub enum ScopedSymbol {
Local(String),
Global(String),
}
impl std::fmt::Display for ScopedSymbol {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
match self {
ScopedSymbol::Local(name) => write!(f, "~{name}"),
ScopedSymbol::Global(name) => write!(f, "{name}"),
}
}
}
pub enum SyntacticError {
UnterminatedBlock,
UnterminatedExpression,
UnterminatedComment,
UnterminatedCharacterLiteral,
UnterminatedStringLiteral,
UnterminatedMacroDefinition(String),
UnmatchedBlockTerminator,
UnmatchedExpressionTerminator,
UnmatchedCommentTerminator,
UnmatchedMacroTerminator,
ExpectedSingleCharacter,
DuplicateFieldNameInWord(char),
InvalidCharacterInWord(char),
InvalidDecimalLiteral(String),
InvalidHexadecimalLiteral(String),
InvalidBinaryLiteral(String),
InvalidOctalLiteral(String),
}
pub fn report_syntactic_errors(errors: &[Tracked<SyntacticError>], source_code: &str) {
for error in errors {
report_syntactic_error(error, source_code);
}
}
fn report_syntactic_error(error: &Tracked<SyntacticError>, source_code: &str) {
let context = Context { source_code: &source_code, source: &error.source };
let message = match &error.value {
SyntacticError::UnterminatedBlock =>
"Block was not terminated, add a '}}' character to terminate",
SyntacticError::UnterminatedExpression =>
"Expression was not terminated, add a ']' character to terminate",
SyntacticError::UnterminatedComment =>
"Comment was not terminated, add a ')' character to terminate",
SyntacticError::UnterminatedCharacterLiteral =>
"Character was not terminated, add a ' character to terminate",
SyntacticError::UnterminatedStringLiteral =>
"String was not terminated, add a '\"' character to terminate",
SyntacticError::UnterminatedMacroDefinition(name) =>
&format!("The '{name}' macro definition was not terminated, add a ';' character to terminate"),
SyntacticError::UnmatchedBlockTerminator =>
"Attempted to terminate a block, but no block was in progress",
SyntacticError::UnmatchedExpressionTerminator =>
"Attempted to terminate an expression, but no expression was in progress",
SyntacticError::UnmatchedCommentTerminator =>
"Attempted to terminate a comment, but no comment was in progress",
SyntacticError::UnmatchedMacroTerminator =>
"Attempted to terminate a macro definition, but no macro definition was in progress",
SyntacticError::ExpectedSingleCharacter =>
"A character literal must contain exactly one character",
SyntacticError::DuplicateFieldNameInWord(name) =>
&format!("The field '{name}' has already been used in this word"),
SyntacticError::InvalidCharacterInWord(c) =>
&format!("The character '{c}' cannot be used in a word"),
SyntacticError::InvalidDecimalLiteral(string) =>
&format!("The string '{string}' is not a valid decimal literal"),
SyntacticError::InvalidHexadecimalLiteral(string) =>
&format!("The string '{string}' is not a valid hexadecimal literal"),
SyntacticError::InvalidBinaryLiteral(string) =>
&format!("The string '{string}' is not a valid binary literal"),
SyntacticError::InvalidOctalLiteral(string) =>
&format!("The string '{string}' is not a valid octal literal"),
};
report_source_issue(LogLevel::Error, &context, message);
}
pub fn print_syntactic_token(i: usize, token: &SyntacticToken) {
match token {
SyntacticToken::LabelDefinition(symbol) => indent!(i, "LabelDefinition({symbol})"),
SyntacticToken::MacroDefinition(definition) => {
indent!(i, "MacroDefinition({})", definition.name);
for token in &definition.body {
print_syntactic_token(i+1, token);
}
}
SyntacticToken::IntegerLiteral(value) => indent!(i, "IntegerLiteral({value})"),
SyntacticToken::StringLiteral(literal) => indent!(i, "StringLiteral({literal})"),
SyntacticToken::WordTemplate(template) => indent!(i, "WordTemplate({template})"),
SyntacticToken::BlockLiteral(tokens) => {
indent!(i, "BlockLiteral");
for token in tokens {
print_syntactic_token(i+1, token);
}
}
SyntacticToken::Expression(tokens) => {
indent!(i, "Expression");
for token in tokens {
print_syntactic_token(i+1, token);
}
}
SyntacticToken::Symbol(symbol) => indent!(i, "Symbol({symbol})"),
SyntacticToken::Separator => indent!(i, "Separator"),
SyntacticToken::Condition => indent!(i, "Condition"),
SyntacticToken::Pin => indent!(i, "Pin"),
}
}
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