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Fix some calc parsing panics

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This commit is contained in:
David Zbarsky 2015-08-14 02:39:45 -04:00
parent 67db4fbc2e
commit f8bd7c46ae
1 changed files with 16 additions and 9 deletions
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25
components/style/values.rs
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@ -504,13 +504,8 @@ pub mod specified {
match node_with_unit {
None => Ok(CalcAstNode::Value(CalcValueNode::Number(multiplier))),
Some(CalcValueNode::Sum(box sum)) =>
Ok(CalcAstNode::Add(CalcSumNode {
products: sum.products
.iter()
.map(|p| Calc::multiply_product(p, multiplier))
.collect()
})),
Some(CalcValueNode::Sum(box ref sum)) =>
Ok(CalcAstNode::Add(Calc::multiply_sum(sum, multiplier))),
Some(ref value) =>
Ok(CalcAstNode::Value(Calc::multiply_value(value, multiplier))),
}
@ -525,11 +520,22 @@ pub mod specified {
}
}
fn multiply_sum(node: &CalcSumNode, multiplier: CSSFloat) -> CalcSumNode {
CalcSumNode {
products: node.products
.iter()
.map(|p| Calc::multiply_product(p, multiplier))
.collect()
}
}
fn multiply_value(node: &CalcValueNode, multiplier: CSSFloat) -> CalcValueNode {
println!("multiplying {:?} by {}", node, multiplier);
match node {
&CalcValueNode::Number(_) => unreachable!(),
&CalcValueNode::Number(num) => CalcValueNode::Number(num * multiplier),
&CalcValueNode::Percentage(p) => CalcValueNode::Percentage(p * multiplier),
&CalcValueNode::Sum(_) => unreachable!(),
&CalcValueNode::Sum(box ref sum) =>
CalcValueNode::Sum(box Calc::multiply_sum(sum, multiplier)),
&CalcValueNode::Length(l) => CalcValueNode::Length(l * multiplier),
}
}
@ -544,6 +550,7 @@ pub mod specified {
CalcAstNode::Value(value) => simplified.push(value),
CalcAstNode::Add(sum) => {
for product in sum.products {
println!(" Matching product AST: {:?}", product);
assert!(product.values.len() == 1);
simplified.push(product.values[0].clone());
}