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replace direct node type checking with helper functions

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This commit is contained in:
Ondrej Kraus 2015-02-25 03:02:48 +01:00
parent 99b2e00d33
commit f2981b7e95
1 changed files with 6 additions and 14 deletions
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20
src/babel/transformation/transformers/es6/parameters.rest.js
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@ -16,11 +16,11 @@ var memberExpressionVisitor = {
if (!t.isReferencedIdentifier(node, parent, { name: state.name })) return;
if (parent.type === 'MemberExpression') {
if (t.isMemberExpression(parent)) {
var prop = parent.property;
if (typeof prop.value === 'number' ||
prop.type === 'UnaryExpression' ||
prop.type === 'BinaryExpression') {
t.isUnaryExpression(prop) ||
t.isBinaryExpression(prop)) {
state.candidates.push({ node: node, parent: parent });
return;
}
@ -35,26 +35,18 @@ function optimizeMemberExpression(node, parent, offset) {
var newExpr;
var prop = parent.property;
switch (prop.type) {
case 'Literal':
if (t.isLiteral(prop)) {
node.name = 'arguments';
prop.value += offset;
prop.raw = String(prop.value);
break;
case 'UnaryExpression': {
} else if (t.isUnaryExpression(prop)) {
node.name = 'arguments';
newExpr = t.binaryExpression('+', prop, t.literal(offset));
parent.property = newExpr;
break;
}
case 'BinaryExpression': {
} else if (t.isBinaryExpression(prop)) {
node.name = 'arguments';
newExpr = t.binaryExpression('+', prop, t.literal(offset));
parent.property = newExpr;
break;
}
default:
throw new Error('Unsupported property type');
}
}