%{ #define YYDEBUG 1 /****************************************************************************** * Icinga 2 * * Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of the GNU General Public License * * as published by the Free Software Foundation; either version 2 * * of the License, or (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software Foundation * * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. * ******************************************************************************/ #include "i2-config.h" #include "config/configitembuilder.h" #include "config/configcompiler.h" #include "config/configcompilercontext.h" #include "config/configerror.h" #include "config/typerule.h" #include "config/typerulelist.h" #include "config/aexpression.h" #include "config/applyrule.h" #include "base/value.h" #include "base/utility.h" #include "base/array.h" #include "base/scriptvariable.h" #include "base/exception.h" #include "base/dynamictype.h" #include #include #include #define YYLTYPE icinga::DebugInfo #define YYERROR_VERBOSE #define YYLLOC_DEFAULT(Current, Rhs, N) \ do { \ if (N) { \ (Current).Path = YYRHSLOC(Rhs, 1).Path; \ (Current).FirstLine = YYRHSLOC(Rhs, 1).FirstLine; \ (Current).FirstColumn = YYRHSLOC(Rhs, 1).FirstColumn; \ (Current).LastLine = YYRHSLOC(Rhs, N).LastLine; \ (Current).LastColumn = YYRHSLOC(Rhs, N).LastColumn; \ } else { \ (Current).Path = YYRHSLOC(Rhs, 0).Path; \ (Current).FirstLine = (Current).LastLine = \ YYRHSLOC(Rhs, 0).LastLine; \ (Current).FirstColumn = (Current).LastColumn = \ YYRHSLOC(Rhs, 0).LastColumn; \ } \ } while (0) #define YY_LOCATION_PRINT(file, loc) \ do { \ std::ostringstream msgbuf; \ msgbuf << loc; \ std::string str = msgbuf.str(); \ fputs(str.c_str(), file); \ } while (0) using namespace icinga; int ignore_newlines = 0; static void MakeRBinaryOp(Value** result, AExpression::OpCallback& op, Value *left, Value *right, DebugInfo& diLeft, DebugInfo& diRight) { *result = new Value(make_shared(op, static_cast(*left), static_cast(*right), DebugInfoRange(diLeft, diRight))); delete left; delete right; } %} %pure-parser %locations %defines %error-verbose %parse-param { ConfigCompiler *context } %lex-param { void *scanner } %union { char *text; double num; icinga::Value *variant; icinga::AExpression::OpCallback op; icinga::TypeSpecifier type; std::vector *slist; Array *array; } %token T_NEWLINE "new-line" %token T_STRING %token T_STRING_ANGLE %token T_NUMBER %token T_NULL %token T_IDENTIFIER %token T_SET "= (T_SET)" %token T_SET_PLUS "+= (T_SET_PLUS)" %token T_SET_MINUS "-= (T_SET_MINUS)" %token T_SET_MULTIPLY "*= (T_SET_MULTIPLY)" %token T_SET_DIVIDE "/= (T_SET_DIVIDE)" %token T_SHIFT_LEFT "<< (T_SHIFT_LEFT)" %token T_SHIFT_RIGHT ">> (T_SHIFT_RIGHT)" %token T_EQUAL "== (T_EQUAL)" %token T_NOT_EQUAL "!= (T_NOT_EQUAL)" %token T_IN "in (T_IN)" %token T_NOT_IN "!in (T_NOT_IN)" %token T_LOGICAL_AND "&& (T_LOGICAL_AND)" %token T_LOGICAL_OR "|| (T_LOGICAL_OR)" %token T_LESS_THAN_OR_EQUAL "<= (T_LESS_THAN_OR_EQUAL)" %token T_GREATER_THAN_OR_EQUAL ">= (T_GREATER_THAN_OR_EQUAL)" %token T_PLUS "+ (T_PLUS)" %token T_MINUS "- (T_MINUS)" %token T_MULTIPLY "* (T_MULTIPLY)" %token T_DIVIDE_OP "/ (T_DIVIDE_OP)" %token T_BINARY_AND "& (T_BINARY_AND)" %token T_BINARY_OR "| (T_BINARY_OR)" %token T_LESS_THAN "< (T_LESS_THAN)" %token T_GREATER_THAN "> (T_GREATER_THAN)" %token T_CONST "const (T_CONST)" %token T_TYPE_DICTIONARY "dictionary (T_TYPE_DICTIONARY)" %token T_TYPE_ARRAY "array (T_TYPE_ARRAY)" %token T_TYPE_NUMBER "number (T_TYPE_NUMBER)" %token T_TYPE_STRING "string (T_TYPE_STRING)" %token T_TYPE_SCALAR "scalar (T_TYPE_SCALAR)" %token T_TYPE_ANY "any (T_TYPE_ANY)" %token T_TYPE_NAME "name (T_TYPE_NAME)" %token T_VALIDATOR "%validator (T_VALIDATOR)" %token T_REQUIRE "%require (T_REQUIRE)" %token T_ATTRIBUTE "%attribute (T_ATTRIBUTE)" %token T_TYPE "type (T_TYPE)" %token T_OBJECT "object (T_OBJECT)" %token T_TEMPLATE "template (T_TEMPLATE)" %token T_INCLUDE "include (T_INCLUDE)" %token T_INCLUDE_RECURSIVE "include_recursive (T_INCLUDE_RECURSIVE)" %token T_LIBRARY "library (T_LIBRARY)" %token T_INHERITS "inherits (T_INHERITS)" %token T_PARTIAL "partial (T_PARTIAL)" %token T_APPLY "apply (T_APPLY)" %token T_WHERE "where (T_WHERE)" %token T_IMPORT "import (T_IMPORT)" %token T_ASSIGN "assign (T_ASSIGN)" %token T_IGNORE "ignore (T_IGNORE)" %token T_FUNCTION "function (T_FUNCTION)" %token T_LAMBDA "lambda (T_LAMBDA)" %type identifier %type rterm_items %type rterm_items_inner %type identifier_items %type identifier_items_inner %type lterm_items %type lterm_items_inner %type typerulelist %type lbinary_op %type type %type partial_specifier %type rterm %type rterm_scope %type lterm %type object %type apply %left T_LOGICAL_OR %left T_LOGICAL_AND %left T_BINARY_OR %left T_BINARY_AND %left T_IN %left T_NOT_IN %left T_EQUAL T_NOT_EQUAL %left T_LESS_THAN T_LESS_THAN_OR_EQUAL T_GREATER_THAN T_GREATER_THAN_OR_EQUAL %left T_SHIFT_LEFT T_SHIFT_RIGHT %left T_PLUS T_MINUS %left T_MULTIPLY T_DIVIDE_OP %right '!' '~' %left '.' '(' '[' %right ':' %{ int yylex(YYSTYPE *lvalp, YYLTYPE *llocp, void *scanner); void yyerror(YYLTYPE *locp, ConfigCompiler *, const char *err) { std::ostringstream message; message << *locp << ": " << err; ConfigCompilerContext::GetInstance()->AddMessage(true, message.str(), *locp); } int yyparse(ConfigCompiler *context); static bool m_Abstract; static std::stack m_RuleLists; static ConfigType::Ptr m_Type; static Dictionary::Ptr m_ModuleScope; static bool m_Apply; static AExpression::Ptr m_Assign; static AExpression::Ptr m_Ignore; void ConfigCompiler::Compile(void) { m_ModuleScope = make_shared(); try { yyparse(this); } catch (const ConfigError& ex) { const DebugInfo *di = boost::get_error_info(ex); ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), di ? *di : DebugInfo()); } catch (const std::exception& ex) { ConfigCompilerContext::GetInstance()->AddMessage(true, DiagnosticInformation(ex)); } } #define scanner (context->GetScanner()) %} %% statements: /* empty */ | statements statement ; statement: type | include | include_recursive | library | constant | newlines { } | lterm { AExpression::Ptr aexpr = *$1; aexpr->Evaluate(m_ModuleScope); delete $1; } ; include: T_INCLUDE rterm sep { AExpression::Ptr aexpr = static_cast(*$2); delete $2; context->HandleInclude(aexpr->Evaluate(m_ModuleScope), false, DebugInfoRange(@1, @2)); } | T_INCLUDE T_STRING_ANGLE { context->HandleInclude($2, true, DebugInfoRange(@1, @2)); free($2); } ; include_recursive: T_INCLUDE_RECURSIVE rterm { AExpression::Ptr aexpr = static_cast(*$2); delete $2; context->HandleIncludeRecursive(aexpr->Evaluate(m_ModuleScope), "*.conf", DebugInfoRange(@1, @2)); } | T_INCLUDE_RECURSIVE rterm ',' rterm { AExpression::Ptr aexpr1 = static_cast(*$2); delete $2; AExpression::Ptr aexpr2 = static_cast(*$4); delete $4; context->HandleIncludeRecursive(aexpr1->Evaluate(m_ModuleScope), aexpr2->Evaluate(m_ModuleScope), DebugInfoRange(@1, @4)); } ; library: T_LIBRARY T_STRING sep { context->HandleLibrary($2); free($2); } ; constant: T_CONST identifier T_SET rterm sep { AExpression::Ptr aexpr = static_cast(*$4); delete $4; ScriptVariable::Ptr sv = ScriptVariable::Set($2, aexpr->Evaluate(m_ModuleScope)); sv->SetConstant(true); free($2); } ; identifier: T_IDENTIFIER | T_STRING { $$ = $1; } ; type: partial_specifier T_TYPE identifier { String name = String($3); free($3); m_Type = ConfigType::GetByName(name); if (!m_Type) { if ($1) BOOST_THROW_EXCEPTION(ConfigError("Partial type definition for unknown type '" + name + "'") << errinfo_debuginfo(DebugInfoRange(@1, @3))); m_Type = make_shared(name, DebugInfoRange(@1, @3)); m_Type->Register(); } } type_inherits_specifier typerulelist sep { TypeRuleList::Ptr ruleList = *$6; m_Type->GetRuleList()->AddRules(ruleList); m_Type->GetRuleList()->AddRequires(ruleList); String validator = ruleList->GetValidator(); if (!validator.IsEmpty()) m_Type->GetRuleList()->SetValidator(validator); delete $6; } ; partial_specifier: /* Empty */ { $$ = 0; } | T_PARTIAL { $$ = 1; } ; typerulelist: '{' { m_RuleLists.push(make_shared()); } typerules '}' { $$ = new Value(m_RuleLists.top()); m_RuleLists.pop(); } ; typerules: typerules_inner | typerules_inner sep typerules_inner: /* empty */ | typerule | typerules_inner sep typerule ; typerule: T_REQUIRE T_STRING { m_RuleLists.top()->AddRequire($2); free($2); } | T_VALIDATOR T_STRING { m_RuleLists.top()->SetValidator($2); free($2); } | T_ATTRIBUTE type T_STRING { TypeRule rule($2, String(), $3, TypeRuleList::Ptr(), DebugInfoRange(@1, @3)); free($3); m_RuleLists.top()->AddRule(rule); } | T_ATTRIBUTE T_TYPE_NAME '(' identifier ')' T_STRING { TypeRule rule($2, $4, $6, TypeRuleList::Ptr(), DebugInfoRange(@1, @6)); free($4); free($6); m_RuleLists.top()->AddRule(rule); } | T_ATTRIBUTE type T_STRING typerulelist { TypeRule rule($2, String(), $3, *$4, DebugInfoRange(@1, @4)); free($3); delete $4; m_RuleLists.top()->AddRule(rule); } ; type_inherits_specifier: /* empty */ | T_INHERITS identifier { m_Type->SetParent($2); free($2); } ; type: T_TYPE_DICTIONARY | T_TYPE_ARRAY | T_TYPE_NUMBER | T_TYPE_STRING | T_TYPE_SCALAR | T_TYPE_ANY | T_TYPE_NAME { $$ = $1; } ; object: { m_Abstract = false; } object_declaration identifier rterm rterm_scope sep { Array::Ptr args = make_shared(); args->Add(m_Abstract); args->Add($3); free($3); args->Add(*$4); delete $4; AExpression::Ptr exprl = *$5; delete $5; exprl->MakeInline(); $$ = new Value(make_shared(&AExpression::OpObject, args, exprl, DebugInfoRange(@2, @5))); } ; object_declaration: T_OBJECT | T_TEMPLATE { m_Abstract = true; } identifier_items: identifier_items_inner { $$ = $1; } | identifier_items_inner ',' { $$ = $1; } ; identifier_items_inner: /* empty */ { $$ = new Array(); } | identifier { $$ = new Array(); $$->Add($1); free($1); } | identifier_items_inner ',' identifier { if ($1) $$ = $1; else $$ = new Array(); $$->Add($3); free($3); } ; lbinary_op: T_SET | T_SET_PLUS | T_SET_MINUS | T_SET_MULTIPLY | T_SET_DIVIDE { $$ = $1; } ; lterm_items: lterm_items_inner { $$ = $1; } | lterm_items_inner sep { $$ = $1; } lterm_items_inner: /* empty */ { $$ = new Array(); } | lterm { $$ = new Array(); $$->Add(*$1); delete $1; } | lterm_items_inner sep lterm { if ($1) $$ = $1; else $$ = new Array(); $$->Add(*$3); delete $3; } ; lterm: identifier lbinary_op rterm { AExpression::Ptr aindex = make_shared(&AExpression::OpLiteral, $1, @1); free($1); AExpression::Ptr aexpr = static_cast(*$3); $$ = new Value(make_shared($2, aindex, aexpr, DebugInfoRange(@1, @3))); delete $3; } | identifier '[' rterm ']' lbinary_op rterm { AExpression::Ptr subexpr = make_shared($5, static_cast(*$3), static_cast(*$6), DebugInfoRange(@1, @6)); delete $3; delete $6; Array::Ptr subexprl = make_shared(); subexprl->Add(subexpr); AExpression::Ptr aindex = make_shared(&AExpression::OpLiteral, $1, @1); free($1); AExpression::Ptr expr = make_shared(&AExpression::OpDict, subexprl, DebugInfoRange(@1, @6)); $$ = new Value(make_shared(&AExpression::OpSetPlus, aindex, expr, DebugInfoRange(@1, @6))); } | identifier '.' T_IDENTIFIER lbinary_op rterm { AExpression::Ptr aindex = make_shared(&AExpression::OpLiteral, $3, @3); AExpression::Ptr subexpr = make_shared($4, aindex, static_cast(*$5), DebugInfoRange(@1, @5)); free($3); delete $5; Array::Ptr subexprl = make_shared(); subexprl->Add(subexpr); AExpression::Ptr aindexl = make_shared(&AExpression::OpLiteral, $1, @1); free($1); AExpression::Ptr expr = make_shared(&AExpression::OpDict, subexprl, DebugInfoRange(@1, @5)); $$ = new Value(make_shared(&AExpression::OpSetPlus, aindexl, expr, DebugInfoRange(@1, @5))); } | T_IMPORT rterm { AExpression::Ptr avar = make_shared(&AExpression::OpVariable, "type", DebugInfoRange(@1, @2)); AExpression::Ptr aexpr = static_cast(*$2); delete $2; $$ = new Value(make_shared(&AExpression::OpImport, avar, aexpr, DebugInfoRange(@1, @2))); } | T_ASSIGN T_WHERE rterm { if (!m_Apply) BOOST_THROW_EXCEPTION(ConfigError("'assign' keyword not valid in this context.")); m_Assign = make_shared(&AExpression::OpLogicalOr, m_Assign, static_cast(*$3), DebugInfoRange(@1, @3)); delete $3; $$ = new Value(make_shared(&AExpression::OpLiteral, Empty, DebugInfoRange(@1, @3))); } | T_IGNORE T_WHERE rterm { if (!m_Apply) BOOST_THROW_EXCEPTION(ConfigError("'ignore' keyword not valid in this context.")); m_Ignore = make_shared(&AExpression::OpLogicalOr, m_Ignore, static_cast(*$3), DebugInfoRange(@1, @3)); delete $3; $$ = new Value(make_shared(&AExpression::OpLiteral, Empty, DebugInfoRange(@1, @3))); } | apply { $$ = $1; } | object { $$ = $1; } | rterm { $$ = $1; } ; rterm_items: rterm_items_inner { $$ = $1; } | rterm_items_inner ',' { $$ = $1; } ; rterm_items_inner: /* empty */ { $$ = new Array(); } | rterm { $$ = new Array(); $$->Add(*$1); delete $1; } | rterm_items_inner ',' rterm { $$ = $1; $$->Add(*$3); delete $3; } | rterm_items_inner ',' newlines rterm { $$ = $1; $$->Add(*$4); delete $4; } ; rterm_scope: '{' newlines lterm_items newlines '}' { $$ = new Value(make_shared(&AExpression::OpDict, Array::Ptr($3), DebugInfoRange(@1, @5))); } | '{' newlines lterm_items '}' { $$ = new Value(make_shared(&AExpression::OpDict, Array::Ptr($3), DebugInfoRange(@1, @4))); } | '{' lterm_items newlines '}' { $$ = new Value(make_shared(&AExpression::OpDict, Array::Ptr($2), DebugInfoRange(@1, @4))); } | '{' lterm_items '}' { $$ = new Value(make_shared(&AExpression::OpDict, Array::Ptr($2), DebugInfoRange(@1, @3))); } ; rterm: T_STRING { $$ = new Value(make_shared(&AExpression::OpLiteral, $1, @1)); free($1); } | T_NUMBER { $$ = new Value(make_shared(&AExpression::OpLiteral, $1, @1)); } | T_NULL { $$ = new Value(make_shared(&AExpression::OpLiteral, Empty, @1)); } | rterm '.' T_IDENTIFIER { $$ = new Value(make_shared(&AExpression::OpIndexer, static_cast(*$1), make_shared(&AExpression::OpLiteral, $3, @3), DebugInfoRange(@1, @3))); delete $1; free($3); } | rterm '(' rterm_items ')' { Array::Ptr arguments = Array::Ptr($3); $$ = new Value(make_shared(&AExpression::OpFunctionCall, static_cast(*$1), make_shared(&AExpression::OpLiteral, arguments, @3), DebugInfoRange(@1, @4))); free($1); } | T_IDENTIFIER { $$ = new Value(make_shared(&AExpression::OpVariable, $1, @1)); free($1); } | '!' rterm { $$ = new Value(make_shared(&AExpression::OpLogicalNegate, static_cast(*$2), DebugInfoRange(@1, @2))); delete $2; } | '~' rterm { $$ = new Value(make_shared(&AExpression::OpNegate, static_cast(*$2), DebugInfoRange(@1, @2))); delete $2; } | rterm '[' rterm ']' { $$ = new Value(make_shared(&AExpression::OpIndexer, static_cast(*$1), static_cast(*$3), DebugInfoRange(@1, @4))); delete $1; free($3); } | '[' newlines rterm_items newlines ']' { $$ = new Value(make_shared(&AExpression::OpArray, Array::Ptr($3), DebugInfoRange(@1, @5))); } | '[' rterm_items newlines ']' { $$ = new Value(make_shared(&AExpression::OpArray, Array::Ptr($2), DebugInfoRange(@1, @4))); } | '[' newlines rterm_items ']' { $$ = new Value(make_shared(&AExpression::OpArray, Array::Ptr($3), DebugInfoRange(@1, @4))); } | '[' rterm_items ']' { $$ = new Value(make_shared(&AExpression::OpArray, Array::Ptr($2), DebugInfoRange(@1, @3))); } | rterm_scope { $$ = $1; } | '(' { ignore_newlines++; } rterm ')' { ignore_newlines--; $$ = $3; } | rterm T_LOGICAL_OR rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_LOGICAL_AND rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_BINARY_OR rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_BINARY_AND rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_IN rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_NOT_IN rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_EQUAL rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_NOT_EQUAL rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_LESS_THAN rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_LESS_THAN_OR_EQUAL rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_GREATER_THAN rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_GREATER_THAN_OR_EQUAL rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_SHIFT_LEFT rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_SHIFT_RIGHT rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_PLUS rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_MINUS rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_MULTIPLY rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | rterm T_DIVIDE_OP rterm { MakeRBinaryOp(&$$, $2, $1, $3, @1, @3); } | T_FUNCTION identifier '(' identifier_items ')' rterm_scope { Array::Ptr arr = make_shared(); arr->Add($2); free($2); AExpression::Ptr aexpr = *$6; delete $6; aexpr->MakeInline(); arr->Add(aexpr); $$ = new Value(make_shared(&AExpression::OpFunction, arr, Array::Ptr($4), DebugInfoRange(@1, @6))); } | T_FUNCTION '(' identifier_items ')' rterm_scope { Array::Ptr arr = make_shared(); arr->Add(Empty); AExpression::Ptr aexpr = *$5; delete $5; aexpr->MakeInline(); arr->Add(aexpr); $$ = new Value(make_shared(&AExpression::OpFunction, arr, Array::Ptr($3), DebugInfoRange(@1, @5))); } | T_LAMBDA identifier_items ':' rterm { Array::Ptr arr = make_shared(); arr->Add(Empty); Array::Ptr arrex = make_shared(); arrex->Add(make_shared(&AExpression::OpSet, make_shared(&AExpression::OpLiteral, "__result", @4), *$4, @4)); delete $4; AExpression::Ptr aexpr = make_shared(&AExpression::OpDict, arrex, true, @4); arr->Add(aexpr); $$ = new Value(make_shared(&AExpression::OpFunction, arr, Array::Ptr($2), DebugInfoRange(@1, @4))); } ; apply: { m_Apply = true; m_Assign = make_shared(&AExpression::OpLiteral, false, DebugInfo()); m_Ignore = make_shared(&AExpression::OpLiteral, false, DebugInfo()); } T_APPLY identifier rterm rterm { m_Apply = false; AExpression::Ptr aname = static_cast(*$4); delete $4; String type = $3; free($3); if (!ApplyRule::IsValidType(type)) BOOST_THROW_EXCEPTION(ConfigError("'apply' cannot be used with type '" + type + "'") << errinfo_debuginfo(DebugInfoRange(@2, @3))); AExpression::Ptr exprl = static_cast(*$5); delete $5; exprl->MakeInline(); // assign && !ignore AExpression::Ptr rex = make_shared(&AExpression::OpLogicalNegate, m_Ignore, DebugInfoRange(@2, @5)); AExpression::Ptr filter = make_shared(&AExpression::OpLogicalAnd, m_Assign, rex, DebugInfoRange(@2, @5)); Array::Ptr args = make_shared(); args->Add(type); args->Add(aname); args->Add(filter); $$ = new Value(make_shared(&AExpression::OpApply, args, exprl, DebugInfoRange(@2, @5))); m_Assign.reset(); m_Ignore.reset(); } ; newlines: T_NEWLINE | newlines T_NEWLINE ; /* required separator */ sep: ',' newlines | ',' | ';' newlines | ';' | newlines ; %%