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//! Solidity file parser
use lalrpop_util::ParseError;
pub use diagnostics::Diagnostic;
pub mod diagnostics;
mod doc;
pub mod lexer;
pub mod pt;
#[allow(clippy::all)]
pub mod solidity {
include!(concat!(env!("OUT_DIR"), "/solidity.rs"));
}
/// Parse soldiity file content
pub fn parse(
src: &str,
file_no: usize,
) -> Result<(pt::SourceUnit, Vec<pt::Comment>), Vec<Diagnostic>> {
// parse phase
let mut comments = Vec::new();
let lex = lexer::Lexer::new(src, file_no, &mut comments);
let s = solidity::SourceUnitParser::new().parse(src, file_no, lex);
if let Err(e) = s {
let errors = vec![match e {
ParseError::InvalidToken { location } => Diagnostic::parser_error(
pt::Loc(file_no, location, location),
"invalid token".to_string(),
),
ParseError::UnrecognizedToken {
token: (l, token, r),
expected,
} => Diagnostic::parser_error(
pt::Loc(file_no, l, r),
format!(
"unrecognised token `{}', expected {}",
token,
expected.join(", ")
),
),
ParseError::User { error } => Diagnostic::parser_error(*error.loc(), error.to_string()),
ParseError::ExtraToken { token } => Diagnostic::parser_error(
pt::Loc(file_no, token.0, token.2),
format!("extra token `{}' encountered", token.0),
),
ParseError::UnrecognizedEOF { location, expected } => Diagnostic::parser_error(
pt::Loc(file_no, location, location),
format!("unexpected end of file, expecting {}", expected.join(", ")),
),
}];
Err(errors)
} else {
Ok((s.unwrap(), comments))
}
}
pub fn box_option<T>(o: Option<T>) -> Option<Box<T>> {
o.map(Box::new)
}
#[cfg(test)]
mod test {
use super::lexer;
use super::pt::*;
use super::solidity;
#[test]
fn parse_test() {
let src = r#"/// @title Foo
/// @description Foo
/// Bar
contract foo {
/**
@title Jurisdiction
*/
/// @author Anon
/**
@description Data for
jurisdiction
@dev It's a struct
*/
struct Jurisdiction {
bool exists;
uint keyIdx;
bytes2 country;
bytes32 region;
}
string __abba_$;
int64 $thing_102;
}
function bar() {
try sum(1, 1) returns (uint sum) {
assert(sum == 2);
} catch (bytes memory b) {
revert('meh');
} catch Error(string memory error) {
revert(error);
} catch Panic(uint x) {
revert('feh');
}
assembly {
let x := 0
for { let i := 0 } lt(i, 0x100) { i := add(i, 0x20) } {
x := /* meh */ add(x, mload(i))
if gt(i, 0x10) {
break
}
}
switch x
case 0 {
revert(0, 0)
// feh
}
default {
leave
}
}
}"#;
let mut comments = Vec::new();
let lex = lexer::Lexer::new(src, 0, &mut comments);
let actual_parse_tree = solidity::SourceUnitParser::new()
.parse(src, 0, lex)
.unwrap();
let expected_parse_tree = SourceUnit(vec![
SourceUnitPart::ContractDefinition(Box::new(ContractDefinition {
doc: vec![
DocComment::Line {
comment: SingleDocComment {
offset: 0,
tag: "title".to_string(),
value: "Foo".to_string(),
},
},
DocComment::Line {
comment: SingleDocComment {
offset: 0,
tag: "description".to_string(),
value: "Foo\nBar".to_string(),
},
},
],
loc: Loc(0, 92, 105),
ty: ContractTy::Contract(Loc(0, 92, 100)),
name: Identifier {
loc: Loc(0, 101, 104),
name: "foo".to_string(),
},
base: Vec::new(),
parts: vec![
ContractPart::StructDefinition(Box::new(StructDefinition {
doc: vec![
DocComment::Block {
comments: vec![SingleDocComment {
offset: 0,
tag: "title".to_string(),
value: "Jurisdiction".to_string(),
}],
},
DocComment::Line {
comment: SingleDocComment {
offset: 0,
tag: "author".to_string(),
value: "Anon".to_string(),
},
},
DocComment::Block {
comments: vec![
SingleDocComment {
offset: 0,
tag: "description".to_string(),
value: "Data for\njurisdiction".to_string(),
},
SingleDocComment {
offset: 0,
tag: "dev".to_string(),
value: "It's a struct".to_string(),
},
],
},
],
name: Identifier {
loc: Loc(0, 419, 431),
name: "Jurisdiction".to_string(),
},
loc: Loc(0, 412, 609),
fields: vec![
VariableDeclaration {
loc: Loc(0, 458, 469),
ty: Expression::Type(Loc(0, 458, 462), Type::Bool),
storage: None,
name: Identifier {
loc: Loc(0, 463, 469),
name: "exists".to_string(),
},
},
VariableDeclaration {
loc: Loc(0, 495, 506),
ty: Expression::Type(Loc(0, 495, 499), Type::Uint(256)),
storage: None,
name: Identifier {
loc: Loc(0, 500, 506),
name: "keyIdx".to_string(),
},
},
VariableDeclaration {
loc: Loc(0, 532, 546),
ty: Expression::Type(Loc(0, 532, 538), Type::Bytes(2)),
storage: None,
name: Identifier {
loc: Loc(0, 539, 546),
name: "country".to_string(),
},
},
VariableDeclaration {
loc: Loc(0, 572, 586),
ty: Expression::Type(Loc(0, 572, 579), Type::Bytes(32)),
storage: None,
name: Identifier {
loc: Loc(0, 580, 586),
name: "region".to_string(),
},
},
],
})),
ContractPart::VariableDefinition(Box::new(VariableDefinition {
doc: vec![],
ty: Expression::Type(Loc(0, 630, 636), Type::String),
attrs: vec![],
name: Identifier {
loc: Loc(0, 637, 645),
name: "__abba_$".to_string(),
},
loc: Loc(0, 630, 645),
initializer: None,
})),
ContractPart::VariableDefinition(Box::new(VariableDefinition {
doc: vec![],
ty: Expression::Type(Loc(0, 667, 672), Type::Int(64)),
attrs: vec![],
name: Identifier {
loc: Loc(0, 673, 683),
name: "$thing_102".to_string(),
},
loc: Loc(0, 667, 683),
initializer: None,
})),
],
})),
SourceUnitPart::FunctionDefinition(Box::new(FunctionDefinition {
doc: vec![],
loc: Loc(0, 720, 735),
ty: FunctionTy::Function,
name: Some(Identifier {
loc: Loc(0, 729, 732),
name: "bar".to_string(),
}),
name_loc: Loc(0, 729, 732),
params: vec![],
attributes: vec![],
return_not_returns: None,
returns: vec![],
body: Some(Statement::Block {
loc: Loc(0, 735, 1770),
unchecked: false,
statements: vec![
Statement::Try(
Loc(0, 757, 1120),
Expression::FunctionCall(
Loc(0, 761, 770),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 761, 764),
name: "sum".to_string(),
})),
vec![
Expression::NumberLiteral(Loc(0, 765, 766), 1.into()),
Expression::NumberLiteral(Loc(0, 768, 769), 1.into()),
],
),
Some((
vec![(
Loc(0, 780, 788),
Some(Parameter {
loc: Loc(0, 780, 788),
ty: Expression::Type(Loc(0, 780, 784), Type::Uint(256)),
storage: None,
name: Some(Identifier {
loc: Loc(0, 785, 788),
name: "sum".to_string(),
}),
}),
)],
Box::new(Statement::Block {
loc: Loc(0, 790, 855),
unchecked: false,
statements: vec![Statement::Expression(
Loc(0, 816, 832),
Expression::FunctionCall(
Loc(0, 816, 832),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 816, 822),
name: "assert".to_string(),
})),
vec![Expression::Equal(
Loc(0, 827, 829),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 823, 826),
name: "sum".to_string(),
})),
Box::new(Expression::NumberLiteral(
Loc(0, 830, 831),
2.into(),
)),
)],
),
)],
}),
)),
vec![
CatchClause::Simple(
Loc(0, 856, 941),
Some(Parameter {
loc: Loc(0, 863, 877),
ty: Expression::Type(Loc(0, 863, 868), Type::DynamicBytes),
storage: Some(StorageLocation::Memory(Loc(0, 869, 875))),
name: Some(Identifier {
loc: Loc(0, 876, 877),
name: "b".to_string(),
}),
}),
Statement::Block {
loc: Loc(0, 879, 941),
unchecked: false,
statements: vec![Statement::Expression(
Loc(0, 905, 918),
Expression::FunctionCall(
Loc(0, 905, 918),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 905, 911),
name: "revert".to_string(),
})),
vec![Expression::StringLiteral(vec![
StringLiteral {
loc: Loc(0, 912, 917),
string: "meh".to_string(),
},
])],
),
)],
},
),
CatchClause::Named(
Loc(0, 942, 1037),
Identifier {
loc: Loc(0, 948, 953),
name: "Error".to_string(),
},
Parameter {
loc: Loc(0, 954, 973),
ty: Expression::Type(Loc(0, 954, 960), Type::String),
storage: Some(StorageLocation::Memory(Loc(0, 961, 967))),
name: Some(Identifier {
loc: Loc(0, 968, 973),
name: "error".to_string(),
}),
},
Statement::Block {
loc: Loc(0, 975, 1037),
unchecked: false,
statements: vec![Statement::Expression(
Loc(0, 1001, 1014),
Expression::FunctionCall(
Loc(0, 1001, 1014),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 1001, 1007),
name: "revert".to_string(),
})),
vec![Expression::Variable(Identifier {
loc: Loc(0, 1008, 1013),
name: "error".to_string(),
})],
),
)],
},
),
CatchClause::Named(
Loc(0, 1038, 1120),
Identifier {
loc: Loc(0, 1044, 1049),
name: "Panic".to_string(),
},
Parameter {
loc: Loc(0, 1050, 1056),
ty: Expression::Type(Loc(0, 1050, 1054), Type::Uint(256)),
storage: None,
name: Some(Identifier {
loc: Loc(0, 1055, 1056),
name: "x".to_string(),
}),
},
Statement::Block {
loc: Loc(0, 1058, 1120),
unchecked: false,
statements: vec![Statement::Expression(
Loc(0, 1084, 1097),
Expression::FunctionCall(
Loc(0, 1084, 1097),
Box::new(Expression::Variable(Identifier {
loc: Loc(0, 1084, 1090),
name: "revert".to_string(),
})),
vec![Expression::StringLiteral(vec![
StringLiteral {
loc: Loc(0, 1091, 1096),
string: "feh".to_string(),
},
])],
),
)],
},
),
],
),
Statement::Assembly {
loc: Loc(0, 1142, 1752),
assembly: vec![
AssemblyStatement::LetAssign(
Loc(0, 1177, 1187),
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1181, 1182),
name: "x".to_string(),
}),
AssemblyExpression::NumberLiteral(Loc(0, 1186, 1187), 0.into()),
),
AssemblyStatement::For(
Loc(0, 1212, 1467),
vec![AssemblyStatement::LetAssign(
Loc(0, 1218, 1228),
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1222, 1223),
name: "i".to_string(),
}),
AssemblyExpression::NumberLiteral(
Loc(0, 1227, 1228),
0.into(),
),
)],
AssemblyExpression::Function(
Loc(0, 1231, 1243),
Box::new(AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1231, 1233),
name: "lt".to_string(),
})),
vec![
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1234, 1235),
name: "i".to_string(),
}),
AssemblyExpression::HexNumberLiteral(
Loc(0, 1237, 1242),
"0x100".to_string(),
),
],
),
vec![AssemblyStatement::Assign(
Loc(0, 1246, 1263),
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1246, 1247),
name: "i".to_string(),
}),
AssemblyExpression::Function(
Loc(0, 1251, 1263),
Box::new(AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1251, 1254),
name: "add".to_string(),
})),
vec![
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1255, 1256),
name: "i".to_string(),
}),
AssemblyExpression::HexNumberLiteral(
Loc(0, 1258, 1262),
"0x20".to_string(),
),
],
),
)],
Box::new(vec![
AssemblyStatement::Assign(
Loc(0, 1296, 1327),
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1296, 1297),
name: "x".to_string(),
}),
AssemblyExpression::Function(
Loc(0, 1311, 1327),
Box::new(AssemblyExpression::Variable(
Identifier {
loc: Loc(0, 1311, 1314),
name: "add".to_string(),
},
)),
vec![
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1315, 1316),
name: "x".to_string(),
}),
AssemblyExpression::Function(
Loc(0, 1318, 1326),
Box::new(AssemblyExpression::Variable(
Identifier {
loc: Loc(0, 1318, 1323),
name: "mload".to_string(),
},
)),
vec![AssemblyExpression::Variable(
Identifier {
loc: Loc(0, 1324, 1325),
name: "i".to_string(),
},
)],
),
],
),
),
AssemblyStatement::If(
Loc(0, 1357, 1441),
AssemblyExpression::Function(
Loc(0, 1360, 1371),
Box::new(AssemblyExpression::Variable(
Identifier {
loc: Loc(0, 1360, 1362),
name: "gt".to_string(),
},
)),
vec![
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1363, 1364),
name: "i".to_string(),
}),
AssemblyExpression::HexNumberLiteral(
Loc(0, 1366, 1370),
"0x10".to_string(),
),
],
),
Box::new(vec![AssemblyStatement::Break(Loc(
0, 1406, 1411,
))]),
),
]),
),
AssemblyStatement::Switch(
Loc(0, 1493, 1730),
AssemblyExpression::Variable(Identifier {
loc: Loc(0, 1500, 1501),
name: "x".to_string(),
}),
vec![AssemblySwitch::Case(
AssemblyExpression::NumberLiteral(
Loc(0, 1531, 1532),
0.into(),
),
Box::new(vec![AssemblyStatement::Expression(
AssemblyExpression::Function(
Loc(0, 1563, 1575),
Box::new(AssemblyExpression::Variable(
Identifier {
loc: Loc(0, 1563, 1569),
name: "revert".to_string(),
},
)),
vec![
AssemblyExpression::NumberLiteral(
Loc(0, 1570, 1571),
0.into(),
),
AssemblyExpression::NumberLiteral(
Loc(0, 1573, 1574),
0.into(),
),
],
),
)]),
)],
Some(AssemblySwitch::Default(Box::new(vec![
AssemblyStatement::Leave(Loc(0, 1699, 1704)),
]))),
),
],
},
],
}),
})),
]);
assert_eq!(actual_parse_tree, expected_parse_tree);
assert_eq!(
comments,
vec![
Comment::Block(Loc(0, 1301, 1310), "/* meh */".to_string()),
Comment::Line(Loc(0, 1604, 1610), "// feh".to_string())
]
)
}
#[test]
fn parse_error_test() {
let src = r#"
error Outer(uint256 available, uint256 required);
contract TestToken {
error NotPending();
/// Insufficient balance for transfer. Needed `required` but only
/// `available` available.
/// @param available balance available.
/// @param required requested amount to transfer.
error InsufficientBalance(uint256 available, uint256 required);
}
"#;
let (actual_parse_tree, _) = crate::parse(src, 0).unwrap();
assert_eq!(actual_parse_tree.0.len(), 2);
let expected_parse_tree = SourceUnit
(vec![
SourceUnitPart::ErrorDefinition(Box::new(ErrorDefinition {
doc: vec![],
loc: Loc(
0,
10,
58,
),
name: Identifier {
loc: Loc(
0,
16,
21,
),
name: "Outer".to_string(),
},
fields: vec![
ErrorParameter {
ty: Expression::Type(
Loc(
0,
22,
29,
),
Type::Uint(
256,
),
),
loc: Loc(
0,
22,
39,
),
name: Some(
Identifier {
loc: Loc(
0,
30,
39,
),
name: "available".to_string(),
},
),
},
ErrorParameter {
ty: Expression::Type(
Loc(
0,
41,
48,
),
Type::Uint(
256,
),
),
loc: Loc(
0,
41,
57,
),
name: Some(
Identifier {
loc: Loc(
0,
49,
57,
),
name: "required".to_string(),
},
),
},
],
})),
SourceUnitPart::ContractDefinition(Box::new(
ContractDefinition {
doc: vec![],
loc: Loc(
0,
69,
88,
),
ty: ContractTy::Contract(
Loc(
0,
69,
77,
),
),
name: Identifier {
loc: Loc(
0,
78,
87,
),
name: "TestToken".to_string(),
},
base: vec![],
parts: vec![
ContractPart::ErrorDefinition(Box::new(
ErrorDefinition {
doc: vec![],
loc: Loc(
0,
102,
120,
),
name: Identifier {
loc: Loc(
0,
108,
118,
),
name: "NotPending".to_string(),
},
fields: vec![],
},
)),
ContractPart::ErrorDefinition(Box::new(
ErrorDefinition {
doc: vec![
DocComment::Line {
comment: SingleDocComment {
offset: 137,
tag: "notice".to_string(),
value: "Insufficient balance for transfer. Needed `required` but only\n`available` available.".to_string(),
},
},
DocComment::Line {
comment: SingleDocComment {
offset: 0,
tag: "param".to_string(),
value: "available balance available.".to_string(),
},
},
DocComment::Line {
comment: SingleDocComment {
offset: 0,
tag: "param".to_string(),
value: "required requested amount to transfer.".to_string(),
},
},
],
loc: Loc(
0,
365,
427,
),
name: Identifier {
loc: Loc(
0,
371,
390,
),
name: "InsufficientBalance".to_string(),
},
fields: vec![
ErrorParameter {
ty: Expression::Type(
Loc(
0,
391,
398,
),
Type::Uint(
256,
),
),
loc: Loc(
0,
391,
408,
),
name: Some(
Identifier {
loc: Loc(
0,
399,
408,
),
name: "available".to_string(),
},
),
},
ErrorParameter {
ty: Expression::Type(
Loc(
0,
410,
417,
),
Type::Uint(
256,
),
),
loc: Loc(
0,
410,
426,
),
name: Some(
Identifier {
loc: Loc(
0,
418,
426,
),
name: "required".to_string(),
},
),
},
],
},
)),
],
},
))
]);
assert_eq!(actual_parse_tree, expected_parse_tree);
}
}