PhutilJavaCodeSnippetContextFreeGrammar.php
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	<?php

	final class PhutilJavaCodeSnippetContextFreeGrammar
	extends PhutilCLikeCodeSnippetContextFreeGrammar {

	protected function buildRuleSet() {
	$parent_ruleset = parent::buildRuleSet();
	$rulesset = array_merge($parent_ruleset, $this->getClassRuleSets());

	$rulesset[] = $this->getTypeNameGrammarSet();
	$rulesset[] = $this->getNamespaceDeclGrammarSet();
	$rulesset[] = $this->getNamespaceNameGrammarSet();
	$rulesset[] = $this->getImportGrammarSet();
	$rulesset[] = $this->getMethodReturnTypeGrammarSet();
	$rulesset[] = $this->getMethodNameGrammarSet();
	$rulesset[] = $this->getVarDeclGrammarSet();
	$rulesset[] = $this->getClassDerivGrammarSet();

	return $rulesset;
	}

	protected function getStartGrammarSet() {
	return $this->buildGrammarSet('start',
	array(
	'[import, block][nmspdecl, block][classdecl, block]',
	));
	}

	protected function getClassDeclGrammarSet() {
	return $this->buildGrammarSet('classdecl',
	array(
	'[classinheritancemod] [visibility] class [classname][classderiv] '.
	'{[classbody, indent, block]}',
	'[visibility] class [classname][classderiv] '.
	'{[classbody, indent, block]}',
	));
	}

	protected function getClassDerivGrammarSet() {
	return $this->buildGrammarSet('classderiv',
	array(
	' extends [classname]',
	'',
	'',
	));
	}

	protected function getTypeNameGrammarSet() {
	return $this->buildGrammarSet('type',
	array(
	'int',
	'boolean',
	'char',
	'short',
	'long',
	'float',
	'double',
	'[classname]',
	'[type][]',
	));
	}

	protected function getMethodReturnTypeGrammarSet() {
	return $this->buildGrammarSet('methodreturn',
	array(
	'[type]',
	'void',
	));
	}

	protected function getNamespaceDeclGrammarSet() {
	return $this->buildGrammarSet('nmspdecl',
	array(
	'package [nmspname][term]',
	));
	}

	protected function getNamespaceNameGrammarSet() {
	return $this->buildGrammarSet('nmspname',
	array(
	'java.lang',
	'java.io',
	'com.example.proj.std',
	'derp.example.www',
	));
	}

	protected function getImportGrammarSet() {
	return $this->buildGrammarSet('import',
	array(
	'import [nmspname][term]',
	'import [nmspname].*[term]',
	'import [nmspname].[classname][term]',
	));
	}

	protected function getExprGrammarSet() {
	$expr = parent::getExprGrammarSet();

	$expr['expr'][] = 'new [classname]([funccallparam])';

	$expr['expr'][] = '[methodcall]';
	$expr['expr'][] = '[methodcall]';
	$expr['expr'][] = '[methodcall]';
	$expr['expr'][] = '[methodcall]';

	// Add some 'char's
	for ($ii = 0; $ii < 2; $ii++) {
	$expr['expr'][] = "'".Filesystem::readRandomCharacters(1)."'";
	}

	return $expr;
	}

	protected function getStmtGrammarSet() {
	$stmt = parent::getStmtGrammarSet();

	$stmt['stmt'][] = '[vardecl]';
	$stmt['stmt'][] = '[vardecl]';
	// `try` to `throw` a `Ball`!
	$stmt['stmt'][] = 'throw [classname][term]';

	return $stmt;
	}

	protected function getPropDeclGrammarSet() {
	return $this->buildGrammarSet('propdecl',
	array(
	'[visibility] [type] [varname][term]',
	));
	}

	protected function getVarDeclGrammarSet() {
	return $this->buildGrammarSet('vardecl',
	array(
	'[type] [varname][term]',
	'[type] [assignment][term]',
	));
	}

	protected function getFuncNameGrammarSet() {
	return $this->buildGrammarSet('funcname',
	array(
	'[methodname]',
	'[classname].[methodname]',
	// This is just silly (too much recursion)
	// '[classname].[funcname]',
	// Don't do this for now, it just clutters up output (thanks to rec.)
	// '[nmspname].[classname].[methodname]',
	));
	}

	// Renamed from `funcname`
	protected function getMethodNameGrammarSet() {
	$funcnames = head(parent::getFuncNameGrammarSet());
	return $this->buildGrammarSet('methodname', $funcnames);
	}

	protected function getMethodFuncDeclGrammarSet() {
	return $this->buildGrammarSet('methodfuncdecl',
	array(
	'[methodreturn] [methodname]([funcparam]) '.
	'{[methodbody, indent, block, trim=right]}',
	));
	}

	protected function getFuncParamGrammarSet() {
	return $this->buildGrammarSet('funcparam',
	array(
	'',
	'[type] [varname]',
	'[type] [varname], [type] [varname]',
	'[type] [varname], [type] [varname], [type] [varname]',
	));
	}

	protected function getAbstractMethodDeclGrammarSet() {
	return $this->buildGrammarSet('abstractmethoddecl',
	array(
	'abstract [methodreturn] [methodname]([funcparam])[term]',
	));
	}

	}

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