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Remove trivial cases of unreachable code
Summary: Static code analysis can detect `Unreachable statement - code above always terminates.` The vast majority of occurrences in the Arcanist codebase are due to an unreachable `break` within a `case` after a `return` or after an all-covering `if/else`. All this noise makes it harder to spot real logic issues (there are some!), thus fix these trivial cases. Test Plan: Examine the code; run static code analysis. Reviewers: O1 Blessed Committers, valerio.bozzolan Reviewed By: O1 Blessed Committers, valerio.bozzolan Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno Differential Revision: https://we.phorge.it/D25803
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5 changed files with 0 additions and 10 deletions
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@ -236,7 +236,6 @@ final class ArcanistSettings extends Phobject {
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throw new Exception(
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pht(
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'Use "arc alias" to configure aliases, not "arc set-config".'));
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break;
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}
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@ -336,7 +336,6 @@ final class PhutilTypeSpec extends Phobject {
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$obj->subtypes[] = $r;
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return $obj;
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}
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break;
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case 'map_type':
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$obj = new PhutilTypeSpec();
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$obj->type = 'map';
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@ -355,7 +354,6 @@ final class PhutilTypeSpec extends Phobject {
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} else {
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return $tokens[0];
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}
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break;
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case 'maybe_comment':
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if ($production == 'yes') {
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$tokens[0]->comment = $tokens[1];
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@ -610,7 +610,6 @@ EOTEXT
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break;
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default:
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throw new Exception(pht('No test block for diff file %s.', $diff_file));
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break;
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}
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}
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@ -31,7 +31,6 @@ final class XHPASTNode extends AASTNode {
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switch ($this->getTypeName()) {
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case 'n_STATEMENT':
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return $this->getChildByIndex(0)->evalStatic();
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break;
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case 'n_STRING_SCALAR':
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return phutil_string_cast($this->getStringLiteralValue());
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case 'n_HEREDOC':
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@ -61,22 +60,18 @@ final class XHPASTNode extends AASTNode {
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default:
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throw new Exception(pht('Unrecognized symbol name.'));
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}
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break;
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case 'n_UNARY_PREFIX_EXPRESSION':
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$operator = $this->getChildOfType(0, 'n_OPERATOR');
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$operand = $this->getChildByIndex(1);
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switch ($operator->getSemanticString()) {
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case '-':
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return -$operand->evalStatic();
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break;
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case '+':
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return $operand->evalStatic();
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break;
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default:
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throw new Exception(
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pht('Unexpected operator in static expression.'));
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}
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break;
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case 'n_ARRAY_LITERAL':
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$result = array();
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$values = $this->getChildOfType(0, 'n_ARRAY_VALUE_LIST');
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@ -68,7 +68,6 @@ function xsprintf_terminal($userdata, &$pattern, &$pos, &$value, &$length) {
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'Unsupported escape sequence "%s" found in pattern: %s',
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$type,
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$pattern));
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break;
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}
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$pattern[$pos] = $type;
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