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/***************************************************************************
* Copyright (C) 2005 by Alexander Dymo *
* adymo@tdevelop.org *
* *
* Copyright (c) 2005 by Matt Rogers *
* mattr@kde.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library 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 Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef AUTOTOOLSAST_H
#define AUTOTOOLSAST_H
#include <tqstringlist.h>
/**
@file autotools.h
Abstract Syntax Tree (AST) class declarations.
*/
namespace AutoTools
{
/**
* AST node.
* This is the base class. Objects of this type are not created by the parser.
*
* Each AST node holds the list of its tqchildren which are always deleted in the
* destructor. This way, it's possible call delete for only root AST node and
* others will be deleted automatically.
*
* Each AST node also knows how to write the information back into .pro file.
*/
class AST
{
public:
/**Type of AST node.*/
enum NodeType {
ProjectAST, ///< Project, scope or function scope.
AssignmentAST, ///< Variable assignment.
TargetAST, ///< Automake target
MakefileConditionalAST, ///< Makefile.am conditional
NewLineAST, ///< Line feed.
CommentAST ///< Comment.
};
/** Constructs AST with given node type.*/
AST(NodeType nodeType): m_nodeType(nodeType), m_depth(0) {}
virtual ~AST();
/**
* Adds child AST node to this node. Despite this function is virtual,
* reimplementations should call it to make automatic destruction of
* AST tree possible.*/
virtual void addChildAST(AST *node);
/**
* Writes information stored in the AST into the @p buffer.
* This is a default implementation which iterates over child nodes
* and calls writeBack for each child node.
*/
virtual void writeBack(TQString &buffer);
/** @return The type of the node.*/
virtual NodeType nodeType() const { return m_nodeType; }
/** Sets the depth of the node in AST.*/
void setDepth(int depth) { m_depth = depth; }
/** @return The depth of the node in AST.*/
int depth() const { return m_depth; }
/** @return The indentation string based on node depth.*/
virtual TQString indentation();
//! \return true if this AST has tqchildren
bool hasChildren() const;
/**
* Get the tqchildren of this ast
* \return the list of this ast's childre
*/
TQValueList<AST*> tqchildren() const;
protected:
NodeType m_nodeType;
TQValueList<AST*> m_tqchildren;
private:
int m_depth;
};
/**
* Project AST node.
* Represents complete projects, scopes and function scopes.
* Examples:
* @code
* scopename{
* var=value
* }
* function(args){
* var=value
* }
* @endcode
*/
class ProjectAST: public AST
{
public:
/**The kind of a project node.*/
enum Kind
{
Project, ///< Project
Target, ///< Custom Automake Target
ConditionalScope, ///< Automake Conditional
Rule, ///< Automake Rule
Empty ///< Project does not exist. the AST is empty
};
/** Constructs a project node of given @p kind. */
ProjectAST(Kind kind = Project): AST(AST::ProjectAST), m_kind(kind) {}
virtual void writeBack(TQString &buffer);
virtual void addChildAST(AST *node);
/** @return true if this node is a project.*/
bool isProject() const { return m_kind == Project; }
bool isRule() const { return m_kind == Rule; }
/** @return true if this node is an automake conditional */
bool isConditionalScope() const { return m_kind == ConditionalScope; }
/** @return true if this node is empty.*/
bool isEmpty() const { return m_kind == Empty; }
/**Scoped identifier (scope name or rule).*/
TQString scopedID;
/**Function arguments. Empty for other kinds of projects.*/
TQString args;
/** The automake conditional has an else attached */
bool hasElse;
/**List of statements.*/
TQValueList<AutoTools::AST*> statements;
private:
Kind m_kind;
};
/**
* Assignment AST node.
* Represents assignments, for example:
* \code
* var=value
* \endcode
*
* Values can be specified on several lines and
* each line is stored as a string in the list of values.@n
* For example, if we have in .pro:
* \code
* SOURCES=a.cpp \
* b.cpp c.cpp
* \endcode
* then values will be stored as a two elements list:
* \code
* a.cpp
* b.cpp c.cpp
* \endcode
*/
class AssignmentAST: public AST
{
public:
AssignmentAST(): AST(AST::AssignmentAST) {}
virtual void writeBack(TQString &buffer);
/**Scoped name of the variable.*/
TQString scopedID;
/**Operator.*/
TQString op;
/**List of values.*/
TQStringList values;
};
class AutomakeTargetAST : public AST
{
public:
AutomakeTargetAST() : AST(AST::TargetAST) {}
virtual void writeBack( TQString& buffer );
/// The name of the target
TQString target;
/// The dependencies for the target, if any
TQStringList deps;
};
class ConditionAST : public AST
{
public:
ConditionAST() : AST( AST::MakefileConditionalAST ) {}
virtual void writeBack( TQString& buffer );
/// The keyword for the condition (if, else, endif)
TQString type;
/// The name of the condition
TQString conditionName;
};
/**
* New line AST node.
* Represents line feeds in files.
*/
class NewLineAST: public AST
{
public:
NewLineAST(): AST(AST::NewLineAST) {}
virtual void writeBack(TQString &buffer);
};
/**
* Comment AST node.
* Represents comments.
*/
class CommentAST: public AST
{
public:
CommentAST(): AST(AST::CommentAST) {}
virtual void writeBack(TQString &buffer);
/**Comment text.*/
TQString comment;
};
}
#endif
// kate: indent-mode csands; space-indent off; tab-width 4; auto-insert-doxygen on;
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