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Change all r#try! to ? (#37)

pull/41/head
Atul Bhosale 6 years ago committed by Jason Williams
parent
fda8571e52
commit
313fe0a390
4 changed files with 116 additions and 119 deletions
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  1. 50
      src/lib/exec.rs
  2. 12
      src/lib/js/value.rs
  3. 6
      src/lib/syntax/ast/expr.rs
  4. 167
      src/lib/syntax/parser.rs

50
src/lib/exec.rs
Unescape View File

@ -135,32 +135,32 @@ impl Executor for Interpreter {
Ok(result)
}
ExprDef::IfExpr(ref cond, ref expr, None) => {
Ok(if r#try!(self.run(cond)).borrow().is_true() {
r#try!(self.run(expr))
Ok(if self.run(cond)?.borrow().is_true() {
self.run(expr)?
} else {
Gc::new(ValueData::Undefined)
})
}
ExprDef::IfExpr(ref cond, ref expr, Some(ref else_e)) => {
Ok(if r#try!(self.run(cond)).borrow().is_true() {
r#try!(self.run(expr))
Ok(if self.run(cond)?.borrow().is_true() {
self.run(expr)?
} else {
r#try!(self.run(else_e))
self.run(else_e)?
})
}
ExprDef::SwitchExpr(ref val_e, ref vals, ref default) => {
let val = r#try!(self.run(val_e)).clone();
let val = self.run(val_e)?.clone();
let mut result = Gc::new(ValueData::Null);
let mut matched = false;
for tup in vals.iter() {
let tup: &(Expr, Vec<Expr>) = tup;
let cond = &tup.0;
let block = &tup.1;
if val == r#try!(self.run(cond)) {
if val == self.run(cond)? {
matched = true;
let last_expr = block.last().unwrap();
for expr in block.iter() {
let e_result = r#try!(self.run(expr));
let e_result = self.run(expr)?;
if expr == last_expr {
result = e_result;
}
@ -168,7 +168,7 @@ impl Executor for Interpreter {
}
}
if !matched && default.is_some() {
result = r#try!(self.run(default.as_ref().unwrap()));
result = self.run(default.as_ref().unwrap())?;
}
Ok(result)
}
@ -217,8 +217,8 @@ impl Executor for Interpreter {
Ok(Gc::new(ValueData::Function(GcCell::new(function))))
}
ExprDef::BinOpExpr(BinOp::Num(ref op), ref a, ref b) => {
let v_r_a = r#try!(self.run(a));
let v_r_b = r#try!(self.run(b));
let v_r_a = self.run(a)?;
let v_r_b = self.run(b)?;
let v_a = (*v_r_a).clone();
let v_b = (*v_r_b).clone();
Ok(Gc::new(match *op {
@ -230,7 +230,7 @@ impl Executor for Interpreter {
}))
}
ExprDef::UnaryOpExpr(ref op, ref a) => {
let v_r_a = r#try!(self.run(a));
let v_r_a = self.run(a)?;
let v_a = (*v_r_a).clone();
Ok(match *op {
UnaryOp::Minus => to_value(-v_a.to_num()),
@ -240,8 +240,8 @@ impl Executor for Interpreter {
})
}
ExprDef::BinOpExpr(BinOp::Bit(ref op), ref a, ref b) => {
let v_r_a = r#try!(self.run(a));
let v_r_b = r#try!(self.run(b));
let v_r_a = self.run(a)?;
let v_r_b = self.run(b)?;
let v_a = (*v_r_a).clone();
let v_b = (*v_r_b).clone();
Ok(Gc::new(match *op {
@ -253,8 +253,8 @@ impl Executor for Interpreter {
}))
}
ExprDef::BinOpExpr(BinOp::Comp(ref op), ref a, ref b) => {
let v_r_a = r#try!(self.run(a));
let v_r_b = r#try!(self.run(b));
let v_r_a = self.run(a)?;
let v_r_b = self.run(b)?;
let v_a = v_r_a.borrow();
let v_b = v_r_b.borrow();
Ok(to_value(match *op {
@ -273,8 +273,8 @@ impl Executor for Interpreter {
}))
}
ExprDef::BinOpExpr(BinOp::Log(ref op), ref a, ref b) => {
let v_a = from_value::<bool>(r#try!(self.run(a))).unwrap();
let v_b = from_value::<bool>(r#try!(self.run(b))).unwrap();
let v_a = from_value::<bool>(self.run(a)?).unwrap();
let v_b = from_value::<bool>(self.run(b)?).unwrap();
Ok(match *op {
LogOp::And => to_value(v_a && v_b),
LogOp::Or => to_value(v_a || v_b),
@ -284,7 +284,7 @@ impl Executor for Interpreter {
let func = self.run(callee)?;
let mut v_args = Vec::with_capacity(args.len());
for arg in args.iter() {
v_args.push(r#try!(self.run(arg)));
v_args.push(self.run(arg)?);
}
let this = Gc::new(ValueData::Object(
GcCell::new(HashMap::new()),
@ -326,7 +326,7 @@ impl Executor for Interpreter {
Some(ref v) => self.run(v),
None => Ok(Gc::new(ValueData::Undefined)),
},
ExprDef::ThrowExpr(ref ex) => Err(r#try!(self.run(ex))),
ExprDef::ThrowExpr(ref ex) => Err(self.run(ex)?),
ExprDef::AssignExpr(ref ref_e, ref val_e) => {
let val = self.run(val_e)?;
match ref_e.def {
@ -336,7 +336,7 @@ impl Executor for Interpreter {
.initialize_binding(name.clone(), val.clone());
}
ExprDef::GetConstFieldExpr(ref obj, ref field) => {
let val_obj = r#try!(self.run(obj));
let val_obj = self.run(obj)?;
val_obj.borrow().set_field(field.clone(), val.clone());
}
_ => (),
@ -347,7 +347,7 @@ impl Executor for Interpreter {
for var in vars.iter() {
let (name, value) = var.clone();
let val = match value {
Some(v) => r#try!(self.run(&v)),
Some(v) => self.run(&v)?,
None => Gc::new(ValueData::Null),
};
self.environment.create_mutable_binding(name.clone(), false);
@ -359,7 +359,7 @@ impl Executor for Interpreter {
for var in vars.iter() {
let (name, value) = var.clone();
let val = match value {
Some(v) => r#try!(self.run(&v)),
Some(v) => self.run(&v)?,
None => Gc::new(ValueData::Null),
};
self.environment.create_mutable_binding(name.clone(), false);
@ -371,7 +371,7 @@ impl Executor for Interpreter {
for var in vars.iter() {
let (name, value) = var.clone();
let val = match value {
Some(v) => r#try!(self.run(&v)),
Some(v) => self.run(&v)?,
None => Gc::new(ValueData::Null),
};
self.environment
@ -381,7 +381,7 @@ impl Executor for Interpreter {
Ok(Gc::new(ValueData::Undefined))
}
ExprDef::TypeOfExpr(ref val_e) => {
let val = r#try!(self.run(val_e));
let val = self.run(val_e)?;
Ok(to_value(match *val {
ValueData::Undefined => "undefined",
ValueData::Null | ValueData::Object(_, _) => "object",

12
src/lib/js/value.rs
Unescape View File

@ -504,9 +504,9 @@ impl Display for ValueData {
match v.borrow().iter().last() {
Some((last_key, _)) => {
for (key, val) in v.borrow().iter() {
r#try!(write!(f, "{}: {}", key, val.value.clone()));
write!(f, "{}: {}", key, val.value.clone())?;
if key != last_key {
r#try!(write!(f, "{}", ", "));
write!(f, "{}", ", ")?;
}
}
}
@ -517,9 +517,9 @@ impl Display for ValueData {
match p.borrow().iter().last() {
Some((last_key, _)) => {
for (key, val) in p.borrow().iter() {
r#try!(write!(f, "(Private) {}: {}", key, val.value.clone()));
write!(f, "(Private) {}: {}", key, val.value.clone())?;
if key != last_key {
r#try!(write!(f, "{}", ", "));
write!(f, "{}", ", ")?;
}
}
}
@ -747,7 +747,7 @@ impl<T: FromValue> FromValue for Vec<T> {
let len = v.get_field_slice("length").to_int();
let mut vec = Vec::with_capacity(len as usize);
for i in 0..len {
vec.push(r#try!(from_value(v.get_field(i.to_string()))))
vec.push(from_value(v.get_field(i.to_string()))?)
}
Ok(vec)
}
@ -812,7 +812,7 @@ impl<T: FromValue> FromValue for Option<T> {
Ok(if value.is_null_or_undefined() {
None
} else {
Some(r#try!(FromValue::from_value(value)))
Some(FromValue::from_value(value)?)
})
}
}

6
src/lib/syntax/ast/expr.rs
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@ -111,9 +111,9 @@ impl Display for ExprDef {
return match *self {
ExprDef::ConstExpr(ref c) => write!(f, "{}", c),
ExprDef::BlockExpr(ref block) => {
r#try!(write!(f, "{}", "{"));
write!(f, "{}", "{")?;
for expr in block.iter() {
r#try!(write!(f, "{};", expr));
write!(f, "{};", expr)?;
}
write!(f, "{}", "}")
}
@ -121,7 +121,7 @@ impl Display for ExprDef {
ExprDef::GetConstFieldExpr(ref ex, ref field) => write!(f, "{}.{}", ex, field),
ExprDef::GetFieldExpr(ref ex, ref field) => write!(f, "{}[{}]", ex, field),
ExprDef::CallExpr(ref ex, ref args) => {
r#try!(write!(f, "{}(", ex));
write!(f, "{}(", ex)?;
let arg_strs: Vec<String> = args.iter().map(|arg| arg.to_string()).collect();
write!(f, "{})", arg_strs.join(","))
}

167
src/lib/syntax/parser.rs
Unescape View File

@ -52,7 +52,7 @@ impl Parser {
pub fn parse_all(&mut self) -> ParseResult {
let mut exprs = Vec::new();
while self.pos < self.tokens.len() {
let result = r#try!(self.parse());
let result = self.parse()?;
exprs.push(result);
}
@ -72,7 +72,7 @@ impl Parser {
fn parse_struct(&mut self, keyword: Keyword) -> ParseResult {
match keyword {
Keyword::Throw => {
let thrown = r#try!(self.parse());
let thrown = self.parse()?;
Ok(mk!(self, ExprDef::ThrowExpr(Box::new(thrown))))
}
// vars, lets and consts are similar in parsing structure, we can group them together
@ -177,10 +177,10 @@ impl Parser {
))
}
Keyword::Switch => {
r#try!(self.expect_punc(Punctuator::OpenParen, "switch value"));
self.expect_punc(Punctuator::OpenParen, "switch value")?;
let value = self.parse();
r#try!(self.expect_punc(Punctuator::CloseParen, "switch value"));
r#try!(self.expect_punc(Punctuator::OpenBlock, "switch block"));
self.expect_punc(Punctuator::CloseParen, "switch value")?;
self.expect_punc(Punctuator::OpenBlock, "switch block")?;
let mut cases = Vec::new();
let mut default = None;
while self.pos + 1 < self.tokens.len() {
@ -190,26 +190,26 @@ impl Parser {
TokenData::Keyword(Keyword::Case) => {
let cond = self.parse();
let mut block = Vec::new();
r#try!(self.expect_punc(Punctuator::Colon, "switch case"));
self.expect_punc(Punctuator::Colon, "switch case")?;
loop {
match r#try!(self.get_token(self.pos)).data {
match self.get_token(self.pos)?.data {
TokenData::Keyword(Keyword::Case)
| TokenData::Keyword(Keyword::Default) => break,
TokenData::Punctuator(Punctuator::CloseBlock) => break,
_ => block.push(r#try!(self.parse())),
_ => block.push(self.parse()?),
}
}
cases.push((cond.unwrap(), block));
}
TokenData::Keyword(Keyword::Default) => {
let mut block = Vec::new();
r#try!(self.expect_punc(Punctuator::Colon, "default switch case"));
self.expect_punc(Punctuator::Colon, "default switch case")?;
loop {
match r#try!(self.get_token(self.pos)).data {
match self.get_token(self.pos)?.data {
TokenData::Keyword(Keyword::Case)
| TokenData::Keyword(Keyword::Default) => break,
TokenData::Punctuator(Punctuator::CloseBlock) => break,
_ => block.push(r#try!(self.parse())),
_ => block.push(self.parse()?),
}
}
default = Some(mk!(self, ExprDef::BlockExpr(block)));
@ -228,7 +228,7 @@ impl Parser {
}
}
}
r#try!(self.expect_punc(Punctuator::CloseBlock, "switch block"));
self.expect_punc(Punctuator::CloseBlock, "switch block")?;
Ok(mk!(
self,
ExprDef::SwitchExpr(
@ -243,7 +243,7 @@ impl Parser {
}
Keyword::Function => {
// function [identifier] () { etc }
let tk = r#try!(self.get_token(self.pos));
let tk = self.get_token(self.pos)?;
let name = match tk.data {
TokenData::Identifier(ref name) => {
self.pos += 1;
@ -274,9 +274,7 @@ impl Parser {
}
}
self.pos += 1;
if r#try!(self.get_token(self.pos)).data
== TokenData::Punctuator(Punctuator::Comma)
{
if self.get_token(self.pos)?.data == TokenData::Punctuator(Punctuator::Comma) {
self.pos += 1;
}
tk = self.get_token(self.pos)?;
@ -297,13 +295,13 @@ impl Parser {
if self.pos > self.tokens.len() {
return Err(ParseError::AbruptEnd);
}
let token = r#try!(self.get_token(self.pos));
let token = self.get_token(self.pos)?;
self.pos += 1;
let expr: Expr = match token.data {
TokenData::Punctuator(Punctuator::Semicolon) | TokenData::Comment(_)
if self.pos < self.tokens.len() =>
{
r#try!(self.parse())
self.parse()?
}
TokenData::Punctuator(Punctuator::Semicolon) | TokenData::Comment(_) => {
mk!(self, ExprDef::ConstExpr(Const::Undefined))
@ -316,15 +314,15 @@ impl Parser {
mk!(self, ExprDef::ConstExpr(Const::Undefined))
}
TokenData::Identifier(s) => mk!(self, ExprDef::LocalExpr(s)),
TokenData::Keyword(keyword) => r#try!(self.parse_struct(keyword)),
TokenData::Keyword(keyword) => self.parse_struct(keyword)?,
TokenData::Punctuator(Punctuator::OpenParen) => {
match r#try!(self.get_token(self.pos)).data {
match self.get_token(self.pos)?.data {
TokenData::Punctuator(Punctuator::CloseParen)
if r#try!(self.get_token(self.pos + 1)).data
if self.get_token(self.pos + 1)?.data
== TokenData::Punctuator(Punctuator::Arrow) =>
{
self.pos += 2;
let expr = r#try!(self.parse());
let expr = self.parse()?;
mk!(
self,
ExprDef::ArrowFunctionDeclExpr(Vec::new(), Box::new(expr)),
@ -332,8 +330,8 @@ impl Parser {
)
}
_ => {
let next = r#try!(self.parse());
let next_tok = r#try!(self.get_token(self.pos));
let next = self.parse()?;
let next_tok = self.get_token(self.pos)?;
self.pos += 1;
match next_tok.data {
TokenData::Punctuator(Punctuator::CloseParen) => next,
@ -344,7 +342,7 @@ impl Parser {
ExprDef::LocalExpr(ref name) => (*name).clone(),
_ => "".to_string(),
},
match r#try!(self.get_token(self.pos)).data {
match self.get_token(self.pos)?.data {
TokenData::Identifier(ref id) => id.clone(),
_ => "".to_string(),
},
@ -352,7 +350,7 @@ impl Parser {
let mut expect_ident = true;
loop {
self.pos += 1;
let curr_tk = r#try!(self.get_token(self.pos));
let curr_tk = self.get_token(self.pos)?;
match curr_tk.data {
TokenData::Identifier(ref id) if expect_ident => {
args.push(id.clone());
@ -386,11 +384,11 @@ impl Parser {
}
}
}
r#try!(self.expect(
self.expect(
TokenData::Punctuator(Punctuator::Arrow),
"arrow function"
));
let expr = r#try!(self.parse());
"arrow function",
)?;
let expr = self.parse()?;
mk!(
self,
ExprDef::ArrowFunctionDeclExpr(args, Box::new(expr)),
@ -410,10 +408,10 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::OpenBracket) => {
let mut array: Vec<Expr> = Vec::new();
let mut expect_comma_or_end = r#try!(self.get_token(self.pos)).data
let mut expect_comma_or_end = self.get_token(self.pos)?.data
== TokenData::Punctuator(Punctuator::CloseBracket);
loop {
let token = r#try!(self.get_token(self.pos));
let token = self.get_token(self.pos)?;
if token.data == TokenData::Punctuator(Punctuator::CloseBracket)
&& expect_comma_or_end
{
@ -438,7 +436,7 @@ impl Parser {
"array declaration",
));
} else {
let parsed = r#try!(self.parse());
let parsed = self.parse()?;
self.pos -= 1;
array.push(parsed);
expect_comma_or_end = true;
@ -448,7 +446,7 @@ impl Parser {
mk!(self, ExprDef::ArrayDeclExpr(array), token)
}
TokenData::Punctuator(Punctuator::OpenBlock)
if r#try!(self.get_token(self.pos)).data
if self.get_token(self.pos)?.data
== TokenData::Punctuator(Punctuator::CloseBlock) =>
{
self.pos += 1;
@ -459,15 +457,14 @@ impl Parser {
)
}
TokenData::Punctuator(Punctuator::OpenBlock)
if r#try!(self.get_token(self.pos + 1)).data
if self.get_token(self.pos + 1)?.data
== TokenData::Punctuator(Punctuator::Colon) =>
{
let mut map = Box::new(BTreeMap::new());
while r#try!(self.get_token(self.pos - 1)).data
== TokenData::Punctuator(Punctuator::Comma)
while self.get_token(self.pos - 1)?.data == TokenData::Punctuator(Punctuator::Comma)
|| map.len() == 0
{
let tk = r#try!(self.get_token(self.pos));
let tk = self.get_token(self.pos)?;
let name = match tk.data {
TokenData::Identifier(ref id) => id.clone(),
TokenData::StringLiteral(ref str) => str.clone(),
@ -483,11 +480,11 @@ impl Parser {
}
};
self.pos += 1;
r#try!(self.expect(
self.expect(
TokenData::Punctuator(Punctuator::Colon),
"object declaration"
));
let value = r#try!(self.parse());
"object declaration",
)?;
let value = self.parse()?;
map.insert(name, value);
self.pos += 1;
}
@ -496,12 +493,12 @@ impl Parser {
TokenData::Punctuator(Punctuator::OpenBlock) => {
let mut exprs = Vec::new();
loop {
if r#try!(self.get_token(self.pos)).data
if self.get_token(self.pos)?.data
== TokenData::Punctuator(Punctuator::CloseBlock)
{
break;
} else {
exprs.push(r#try!(self.parse()));
exprs.push(self.parse()?);
}
}
self.pos += 1;
@ -509,23 +506,23 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::Sub) => mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::Minus, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::Minus, Box::new(self.parse()?))
),
TokenData::Punctuator(Punctuator::Add) => mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::Plus, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::Plus, Box::new(self.parse()?))
),
TokenData::Punctuator(Punctuator::Not) => mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::Not, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::Not, Box::new(self.parse()?))
),
TokenData::Punctuator(Punctuator::Inc) => mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::IncrementPre, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::IncrementPre, Box::new(self.parse()?))
),
TokenData::Punctuator(Punctuator::Dec) => mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::DecrementPre, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::DecrementPre, Box::new(self.parse()?))
),
_ => return Err(ParseError::Expected(Vec::new(), token.clone(), "script")),
};
@ -543,7 +540,7 @@ impl Parser {
match next.data {
TokenData::Punctuator(Punctuator::Dot) => {
self.pos += 1;
let tk = r#try!(self.get_token(self.pos));
let tk = self.get_token(self.pos)?;
match tk.data {
TokenData::Identifier(ref s) => {
result = mk!(
@ -563,11 +560,11 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::OpenParen) => {
let mut args = Vec::new();
let mut expect_comma_or_end = r#try!(self.get_token(self.pos + 1)).data
let mut expect_comma_or_end = self.get_token(self.pos + 1)?.data
== TokenData::Punctuator(Punctuator::CloseParen);
loop {
self.pos += 1;
let token = r#try!(self.get_token(self.pos));
let token = self.get_token(self.pos)?;
if token.data == TokenData::Punctuator(Punctuator::CloseParen)
&& expect_comma_or_end
{
@ -587,7 +584,7 @@ impl Parser {
"function call arguments",
));
} else {
let parsed = r#try!(self.parse());
let parsed = self.parse()?;
self.pos -= 1;
args.push(parsed);
expect_comma_or_end = true;
@ -597,9 +594,9 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::Question) => {
self.pos += 1;
let if_e = r#try!(self.parse());
r#try!(self.expect(TokenData::Punctuator(Punctuator::Colon), "if expression"));
let else_e = r#try!(self.parse());
let if_e = self.parse()?;
self.expect(TokenData::Punctuator(Punctuator::Colon), "if expression")?;
let else_e = self.parse()?;
result = mk!(
self,
ExprDef::IfExpr(Box::new(expr), Box::new(if_e), Some(Box::new(else_e)))
@ -607,11 +604,11 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::OpenBracket) => {
self.pos += 1;
let index = r#try!(self.parse());
r#try!(self.expect(
let index = self.parse()?;
self.expect(
TokenData::Punctuator(Punctuator::CloseBracket),
"array index"
));
"array index",
)?;
result = mk!(self, ExprDef::GetFieldExpr(Box::new(expr), Box::new(index)));
}
TokenData::Punctuator(Punctuator::Semicolon) | TokenData::Comment(_) => {
@ -619,7 +616,7 @@ impl Parser {
}
TokenData::Punctuator(Punctuator::Assign) => {
self.pos += 1;
let next = r#try!(self.parse());
let next = self.parse()?;
result = mk!(self, ExprDef::AssignExpr(Box::new(expr), Box::new(next)));
}
TokenData::Punctuator(Punctuator::Arrow) => {
@ -629,79 +626,79 @@ impl Parser {
ExprDef::LocalExpr(ref name) => args.push((*name).clone()),
_ => return Err(ParseError::ExpectedExpr("identifier", result)),
}
let next = r#try!(self.parse());
let next = self.parse()?;
result = mk!(self, ExprDef::ArrowFunctionDeclExpr(args, Box::new(next)));
}
TokenData::Punctuator(Punctuator::Add) => {
result = r#try!(self.binop(BinOp::Num(NumOp::Add), expr))
result = self.binop(BinOp::Num(NumOp::Add), expr)?
}
TokenData::Punctuator(Punctuator::Sub) => {
result = r#try!(self.binop(BinOp::Num(NumOp::Sub), expr))
result = self.binop(BinOp::Num(NumOp::Sub), expr)?
}
TokenData::Punctuator(Punctuator::Mul) => {
result = r#try!(self.binop(BinOp::Num(NumOp::Mul), expr))
result = self.binop(BinOp::Num(NumOp::Mul), expr)?
}
TokenData::Punctuator(Punctuator::Div) => {
result = r#try!(self.binop(BinOp::Num(NumOp::Div), expr))
result = self.binop(BinOp::Num(NumOp::Div), expr)?
}
TokenData::Punctuator(Punctuator::Mod) => {
result = r#try!(self.binop(BinOp::Num(NumOp::Mod), expr))
result = self.binop(BinOp::Num(NumOp::Mod), expr)?
}
TokenData::Punctuator(Punctuator::BoolAnd) => {
result = r#try!(self.binop(BinOp::Log(LogOp::And), expr))
result = self.binop(BinOp::Log(LogOp::And), expr)?
}
TokenData::Punctuator(Punctuator::BoolOr) => {
result = r#try!(self.binop(BinOp::Log(LogOp::Or), expr))
result = self.binop(BinOp::Log(LogOp::Or), expr)?
}
TokenData::Punctuator(Punctuator::And) => {
result = r#try!(self.binop(BinOp::Bit(BitOp::And), expr))
result = self.binop(BinOp::Bit(BitOp::And), expr)?
}
TokenData::Punctuator(Punctuator::Or) => {
result = r#try!(self.binop(BinOp::Bit(BitOp::Or), expr))
result = self.binop(BinOp::Bit(BitOp::Or), expr)?
}
TokenData::Punctuator(Punctuator::Xor) => {
result = r#try!(self.binop(BinOp::Bit(BitOp::Xor), expr))
result = self.binop(BinOp::Bit(BitOp::Xor), expr)?
}
TokenData::Punctuator(Punctuator::LeftSh) => {
result = r#try!(self.binop(BinOp::Bit(BitOp::Shl), expr))
result = self.binop(BinOp::Bit(BitOp::Shl), expr)?
}
TokenData::Punctuator(Punctuator::RightSh) => {
result = r#try!(self.binop(BinOp::Bit(BitOp::Shr), expr))
result = self.binop(BinOp::Bit(BitOp::Shr), expr)?
}
TokenData::Punctuator(Punctuator::Eq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::Equal), expr))
result = self.binop(BinOp::Comp(CompOp::Equal), expr)?
}
TokenData::Punctuator(Punctuator::NotEq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::NotEqual), expr))
result = self.binop(BinOp::Comp(CompOp::NotEqual), expr)?
}
TokenData::Punctuator(Punctuator::StrictEq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::StrictEqual), expr))
result = self.binop(BinOp::Comp(CompOp::StrictEqual), expr)?
}
TokenData::Punctuator(Punctuator::StrictNotEq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::StrictNotEqual), expr))
result = self.binop(BinOp::Comp(CompOp::StrictNotEqual), expr)?
}
TokenData::Punctuator(Punctuator::LessThan) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::LessThan), expr))
result = self.binop(BinOp::Comp(CompOp::LessThan), expr)?
}
TokenData::Punctuator(Punctuator::LessThanOrEq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::LessThanOrEqual), expr))
result = self.binop(BinOp::Comp(CompOp::LessThanOrEqual), expr)?
}
TokenData::Punctuator(Punctuator::GreaterThan) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::GreaterThan), expr))
result = self.binop(BinOp::Comp(CompOp::GreaterThan), expr)?
}
TokenData::Punctuator(Punctuator::GreaterThanOrEq) => {
result = r#try!(self.binop(BinOp::Comp(CompOp::GreaterThanOrEqual), expr))
result = self.binop(BinOp::Comp(CompOp::GreaterThanOrEqual), expr)?
}
TokenData::Punctuator(Punctuator::Inc) => {
result = mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::IncrementPost, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::IncrementPost, Box::new(self.parse()?))
)
}
TokenData::Punctuator(Punctuator::Dec) => {
result = mk!(
self,
ExprDef::UnaryOpExpr(UnaryOp::DecrementPost, Box::new(r#try!(self.parse())))
ExprDef::UnaryOpExpr(UnaryOp::DecrementPost, Box::new(self.parse()?))
)
}
_ => carry_on = false,
@ -716,7 +713,7 @@ impl Parser {
fn binop(&mut self, op: BinOp, orig: Expr) -> Result<Expr, ParseError> {
let (precedence, assoc) = op.get_precedence_and_assoc();
self.pos += 1;
let next = r#try!(self.parse());
let next = self.parse()?;
Ok(match next.def {
ExprDef::BinOpExpr(ref op2, ref a, ref b) => {
let other_precedence = op2.get_precedence();

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