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diff --git a/src/libfsm/action.h b/src/libfsm/action.h
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+/*
+ * Copyright 2001-2018 Adrian Thurston <thurston@colm.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _ACTION_H
+#define _ACTION_H
+
+#include "fsmgraph.h"
+
+struct NameInst;
+struct NameRef;
+struct FsmLongestMatch;
+struct InlineList;
+struct FsmLongestMatchPart;
+struct Action;
+struct CondSpace;
+
+/*
+ * Inline code tree
+ */
+struct InlineItem
+{
+ enum Type
+ {
+ Text, Goto, Call, Ncall, Next, GotoExpr, CallExpr, NcallExpr, NextExpr, Ret, Nret,
+ PChar, Char, Hold, Curs, Targs, Entry, Exec, Break, Nbreak,
+ LmSwitch, LmSetActId, LmSetTokEnd, LmOnLast, LmOnNext, LmOnLagBehind,
+ LmInitAct, LmInitTokStart, LmSetTokStart, LmNfaOnNext, LmNfaOnLast, LmNfaOnEof, Stmt, Subst,
+ NfaWrapAction, NfaWrapConds
+ };
+
+ InlineItem( const InputLoc &loc, std::string data, Type type ) :
+ loc(loc), data(data), nameRef(0), children(0), type(type) { }
+
+ InlineItem( const InputLoc &loc, NameRef *nameRef, Type type ) :
+ loc(loc), nameRef(nameRef), children(0), type(type) { }
+
+ InlineItem( const InputLoc &loc, FsmLongestMatch *longestMatch,
+ FsmLongestMatchPart *longestMatchPart, Type type ) : loc(loc),
+ nameRef(0), children(0), longestMatch(longestMatch),
+ longestMatchPart(longestMatchPart), type(type) { }
+
+ InlineItem( const InputLoc &loc, NameInst *nameTarg, Type type ) :
+ loc(loc), nameRef(0), nameTarg(nameTarg), children(0),
+ type(type) { }
+
+ InlineItem( const InputLoc &loc, Type type ) :
+ loc(loc), nameRef(0), children(0), type(type) { }
+
+ InlineItem( const InputLoc &loc, Action *wrappedAction, Type type )
+ :
+ loc(loc), nameRef(0), children(0), longestMatch(0),
+ longestMatchPart(0), wrappedAction(wrappedAction), type(type)
+ {}
+
+ InlineItem( const InputLoc &loc, CondSpace *condSpace,
+ const CondKeySet &condKeySet, Type type )
+ :
+ loc(loc), nameRef(0), children(0), longestMatch(0),
+ longestMatchPart(0), wrappedAction(0), condSpace(condSpace),
+ condKeySet(condKeySet), type(type)
+ {}
+
+ ~InlineItem();
+
+ InputLoc loc;
+ std::string data;
+ NameRef *nameRef;
+ NameInst *nameTarg;
+ InlineList *children;
+ FsmLongestMatch *longestMatch;
+ FsmLongestMatchPart *longestMatchPart;
+ long substPos;
+ Action *wrappedAction;
+ CondSpace *condSpace;
+ CondKeySet condKeySet;
+ Type type;
+
+ InlineItem *prev, *next;
+};
+
+/* Normally this would be atypedef, but that would entail including DList from
+ * ptreetypes, which should be just typedef forwards. */
+struct InlineList : public DList<InlineItem> { };
+
+struct InlineBlock
+{
+ InlineBlock( const InputLoc &loc, InlineList *inlineList )
+ : loc(loc), inlineList(inlineList) {}
+
+ ~InlineBlock()
+ {
+ inlineList->empty();
+ delete inlineList;
+ }
+
+ InputLoc loc;
+ InlineList *inlineList;
+};
+
+#endif