Mirror: The magical sticky regex-based parser generator 🧙
Improve codegen.js output for astExpression()
+12
-6
+2
-2
src/babel/__snapshots__/plugin.test.js.snap
+2
-2
src/babel/__snapshots__/plugin.test.js.snap
···
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break alt_3;
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}
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-
if ((x = _node_expression3(state)) != null) {} else {
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+
if ((x = _node_expression3(state)) == null) {
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state.y = y1;
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state.x = x1;
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node.length = ln2;
···
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var y3 = state.y,
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x3 = state.x;
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-
if ((x = _node_expression3(state)) != null) {} else {
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+
if ((x = _node_expression3(state)) == null) {
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state.y = y3;
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state.x = x3;
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break loop_3;
+10
-4
src/codegen.js
+10
-4
src/codegen.js
···
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const restoreLength =
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(opts.length && opts.abort && js`${_node}.length = ln${opts.length};`) ||
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'';
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-
const expression = `${ast.expression.id}(${_state})`;
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+
const condition = `(${_match} = ${ast.expression.id}(${_state})) ${
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+
capture ? '!=' : '=='
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+
} null`;
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return js`
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-
if ((${_match} = ${ast.expression.id}(${_state})) != null) {
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-
${capture ? js`${_node}.push(${_match})` : ''}
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-
} else {
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+
if (${condition}) ${
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+
capture
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? js`{
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${_node}.push(${_match});
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+
} else `
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: ''
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+
}{
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${restoreIndex(opts.index)}
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${restoreLength}
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${opts.abort}