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codegen.cpp
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codegen.cpp
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///////////////////////////////////////////////////////////////////////////////
//
// wxFormBuilder - A Visual Dialog Editor for wxWidgets.
// Copyright (C) 2005 José Antonio Hurtado
//
// 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Written by
// José Antonio Hurtado - joseantonio.hurtado@gmail.com
// Juan Antonio Ortega - jortegalalmolda@gmail.com
//
///////////////////////////////////////////////////////////////////////////////
#include "codegen.h"
#include "../model/objectbase.h"
#include "../rad/appdata.h"
#include "../utils/wxfbexception.h"
#include <wx/tokenzr.h>
TemplateParser::TemplateParser(PObjectBase obj, wxString _template)
:
m_obj( obj ),
m_in( _template ),
m_indent( 0 )
{
}
TemplateParser::TemplateParser( const TemplateParser & that, wxString _template )
:
m_obj( that.m_obj ),
m_in( _template ),
m_indent( 0 )
{
}
TemplateParser::~TemplateParser() = default;
TemplateParser::Token TemplateParser::GetNextToken()
{
// There are 3 special characters
// #xxxx -> command
// $xxxx -> property
// %xxxx -> local variable
// @x -> Escape a special character. Example: @# is the character #.
Token result = TOK_ERROR;
if (!m_in.Eof())
{
wxChar c = m_in.Peek();
if ( c == wxT('#') )
result = TOK_MACRO;
else if (c == wxT('$') )
result = TOK_PROPERTY;
else
result = TOK_TEXT;
}
return result;
}
bool TemplateParser::ParseMacro()
{
Ident ident;
ident = ParseIdent();
switch (ident)
{
case ID_WXPARENT:
return ParseWxParent();
break;
case ID_PARENT:
return ParseParent();
break;
case ID_FORM:
return ParseForm();
break;
case ID_IFNOTNULL:
return ParseIfNotNull();
break;
case ID_IFNULL:
return ParseIfNull();
break;
case ID_FOREACH:
return ParseForEach();
break;
case ID_PREDEFINED:
return ParsePred();
break;
case ID_PREDEFINED_INDEX:
return ParseNPred();
break;
case ID_CHILD:
return ParseChild();
break;
case ID_NEWLINE:
return ParseNewLine();
break;
case ID_IFEQUAL:
ParseIfEqual();
break;
case ID_IFNOTEQUAL:
ParseIfNotEqual();
break;
case ID_IFPARENTTYPEEQUAL:
ParseIfParentTypeEqual();
break;
case ID_IFPARENTCLASSEQUAL:
ParseIfParentClassEqual();
break;
case ID_IFPARENTTYPENOTEQUAL:
ParseIfParentTypeNotEqual();
break;
case ID_IFPARENTCLASSNOTEQUAL:
ParseIfParentClassNotEqual();
break;
case ID_APPEND:
ParseAppend();
break;
case ID_CLASS:
ParseClass();
break;
case ID_INDENT:
ParseIndent();
break;
case ID_UNINDENT:
ParseUnindent();
break;
case ID_IFTYPEEQUAL:
ParseIfTypeEqual();
break;
case ID_IFTYPENOTEQUAL:
ParseIfTypeNotEqual();
break;
case ID_UTBL:
ParseLuaTable();
break;
default:
THROW_WXFBEX( wxT("Invalid Macro Type") );
break;
}
return true;
}
TemplateParser::Ident TemplateParser::ParseIdent()
{
Ident ident = ID_ERROR;
if (!m_in.Eof())
{
wxString macro;
m_in.GetC();
wxChar peek( m_in.Peek() );
while (peek != wxChar(EOF) && !m_in.Eof() && peek != wxT('#') && peek != wxT('$')
&& ( (peek >= wxT('a') && peek <= wxT('z') ) ||
(peek >= wxT('A') && peek <= wxT('Z') ) ||
(peek >= wxT('0') && peek <= wxT('9') ) ))
{
macro += wxChar( m_in.GetC() );
peek = wxChar( m_in.Peek() );
}
// Searching the identifier
ident = SearchIdent( macro );
}
return ident;
}
wxString TemplateParser::ParsePropertyName( wxString* child )
{
wxString propname;
// children of parent properties can be referred to with a '/' like "$parent/child"
bool foundSlash = false;
// property names used in templates may be encapsulated by curly brackets (e.g. ${name}) so they
// can be surrounded by the template content without any white spaces now.
bool foundLeftCurlyBracket = false;
bool saveChild = (child != nullptr);
if (!m_in.Eof())
{
m_in.GetC();
wxChar peek( m_in.Peek() );
while (peek != wxChar(EOF) && !m_in.Eof() && peek != wxT('#') && peek != wxT('$')
&& ( (peek >= wxT('a') && peek <= wxT('z') ) ||
(peek >= wxT('A') && peek <= wxT('Z') ) ||
(peek >= wxT('0') && peek <= wxT('9') ) ||
(peek >= wxT('{') && peek <= wxT('}') ) ||
peek == wxT('_') || peek == wxT('/') ) )
{
if ( foundSlash )
{
if ( saveChild )
{
(*child) << wxChar( m_in.GetC() );
}
}
else
{
wxChar next = wxChar( m_in.GetC() );
if ( wxT('{') == next )
{
foundLeftCurlyBracket = true;
}
else if ( ( wxT('}') == next) && (foundLeftCurlyBracket == true) )
{
break;
}
else if ( wxT('/') == next )
{
foundSlash = true;
}
else
{
propname << next;
}
}
peek = wxChar( m_in.Peek() );
}
}
return propname;
}
bool TemplateParser::ParseProperty()
{
wxString childName;
wxString propname = ParsePropertyName( &childName );
PProperty property = m_obj->GetProperty(propname);
if (!property)
{
wxLogError( wxT("The property '%s' does not exist for objects of class '%s'"), propname.c_str(), m_obj->GetClassName().c_str() );
return true;
}
if ( childName.empty() )
{
wxString code = PropertyToCode(property);
m_out << code;
}
else
{
m_out << property->GetChildFromParent( childName );
}
// LogDebug("parsing property %s",propname.c_str());
return true;
}
bool TemplateParser::ParseText()
{
wxString text;
int sspace = 0;
if ( !m_in.Eof() )
{
wxChar peek( m_in.Peek() );
while (peek != wxChar(EOF) && !m_in.Eof() && peek != wxT('#') && peek != wxT('$') )
{
wxChar c( m_in.GetC() );
if (c == wxT('@') )
{
c = wxChar(m_in.GetC());
if(c == wxT(' '))sspace++;
}
text << c;
peek = wxChar( m_in.Peek() );
}
if ( text.find_first_not_of( wxT("\r\n\t ") ) != text.npos )
{
// If text is all whitespace, ignore it
m_out << text;
}
else
{
// ... but allow all '@ ' instances
wxString spaces(wxT(' '), sspace);
m_out << spaces;
}
}
//LogDebug(wxT("Parsed Text: %s"),text.c_str());
return true;
}
bool TemplateParser::ParseInnerTemplate()
{
return true;
}
PObjectBase TemplateParser::GetWxParent()
{
PObjectBase wxparent, prev_wxparent;
std::vector< PObjectBase > candidates;
candidates.push_back( m_obj->FindNearAncestor( wxT("container") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("notebook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("splitter") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("flatnotebook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("listbook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("choicebook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("simplebook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("auinotebook") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("toolbar") ) );
candidates.push_back( m_obj->FindNearAncestor( wxT("wizardpagesimple") ) );
candidates.push_back( m_obj->FindNearAncestorByBaseClass( wxT("wxStaticBoxSizer") ) );
for ( size_t i = 0; i < candidates.size(); i++ )
{
if ( !wxparent )
{
wxparent = candidates[i];
}
else
{
if ( candidates[i] && candidates[i]->Deep() > wxparent->Deep() )
{
wxparent = candidates[i];
}
}
if (wxparent && wxparent->GetClassName() == wxT("wxStaticBoxSizer") &&
wxparent->GetProperty("parent")->GetValueAsInteger() == 0) {
wxparent = prev_wxparent;
}
prev_wxparent = wxparent;
}
return wxparent;
}
bool TemplateParser::ParseWxParent()
{
PObjectBase wxparent( GetWxParent() );
if ( wxparent )
{
PProperty property = GetRelatedProperty( wxparent );
//m_out << PropertyToCode(property);
if (wxparent->GetClassName() == wxT("wxStaticBoxSizer"))
{
// We got a wxStaticBoxSizer as parent, use the special PT_WXPARENT_SB type to
// generate code to get its static box
m_out << ValueToCode(PT_WXPARENT_SB, property->GetValue());
}
else
{
m_out << ValueToCode(PT_WXPARENT, property->GetValue());
}
}
else
{
ignore_whitespaces();
ParsePropertyName();
m_out << RootWxParentToCode();
}
return true;
}
bool TemplateParser::ParseForm()
{
PObjectBase form (m_obj);
PObjectBase parent(form->GetParent());
if ( !parent )
{
return false;
}
// form is a form when grandparent is null
PObjectBase grandparent = parent->GetParent();
while ( grandparent )
{
form = parent;
parent = grandparent;
grandparent = grandparent->GetParent();
}
PProperty property = GetRelatedProperty( form );
m_out << PropertyToCode( property );
return true;
}
void TemplateParser::ParseLuaTable()
{
const auto& project = AppData()->GetProjectData();
const auto& table = project->GetProperty(wxT("ui_table"));
if (table)
{
auto strTableName = table->GetValueAsString();
if (strTableName.empty())
{
strTableName = wxT("UI");
}
m_out << strTableName << wxT(".");
}
}
bool TemplateParser::ParseParent()
{
PObjectBase parent(m_obj->GetParent());
if (parent)
{
PProperty property = GetRelatedProperty( parent );
m_out << PropertyToCode(property);
}
else
{
m_out << wxT("ERROR");
}
return true;
}
bool TemplateParser::ParseChild()
{
// Get the first child
PObjectBase child(m_obj->GetChild(0));
if (child)
{
PProperty property = GetRelatedProperty( child );
m_out << PropertyToCode(property);
}
else
m_out << RootWxParentToCode();
return true;
}
PProperty TemplateParser::GetRelatedProperty( PObjectBase relative )
{
ignore_whitespaces();
wxString propname = ParsePropertyName();
return relative->GetProperty( propname );
}
bool TemplateParser::ParseForEach()
{
// Whitespaces at the very start are ignored
ignore_whitespaces();
// parsing the property
if (GetNextToken() == TOK_PROPERTY)
{
wxString propname = ParsePropertyName();
wxString inner_template = ExtractInnerTemplate();
PProperty property = m_obj->GetProperty(propname);
wxString propvalue = property->GetValue();
// Property value must be an string using ',' as separator.
// The template will be generated nesting as many times as
// tokens were found in the property value.
if (property->GetType() == PT_INTLIST || property->GetType() == PT_UINTLIST)
{
// For doing that we will use wxStringTokenizer class from wxWidgets
wxStringTokenizer tkz( propvalue, wxT(","));
int i = 0;
while (tkz.HasMoreTokens())
{
wxString token;
token = tkz.GetNextToken();
token.Trim(true);
token.Trim(false);
// Parsing the internal template
{
wxString code;
PTemplateParser parser = CreateParser( this, inner_template );
parser->SetPredefined( token, wxString::Format( wxT("%i"), i++ ) );
code = parser->ParseTemplate();
m_out << wxT("\n") << code;
}
}
}
else if (property->GetType() == PT_STRINGLIST)
{
wxArrayString array = property->GetValueAsArrayString();
for ( unsigned int i = 0 ; i < array.Count(); i++ )
{
wxString code;
PTemplateParser parser = CreateParser(this,inner_template);
parser->SetPredefined( ValueToCode( PT_WXSTRING_I18N, array[i] ), wxString::Format( wxT("%i"), i ) );
code = parser->ParseTemplate();
m_out << wxT("\n") << code;
}
}
else
wxLogError(wxT("Property type not compatible with \"foreach\" macro"));
}
return true;
}
PProperty TemplateParser::GetProperty( wxString* childName )
{
PProperty property;
// Check for #wxparent, #parent, or #child
if ( GetNextToken() == TOK_MACRO )
{
try
{
Ident ident = ParseIdent();
switch (ident)
{
case ID_WXPARENT:
{
PObjectBase wxparent( GetWxParent() );
if ( wxparent )
{
property = GetRelatedProperty( wxparent );
}
break;
}
case ID_PARENT:
{
PObjectBase parent( m_obj->GetParent() );
if ( parent )
{
property = GetRelatedProperty( parent );
}
break;
}
case ID_CHILD:
{
PObjectBase child( m_obj->GetChild( 0 ) );
if ( child )
{
property = GetRelatedProperty( child );
}
break;
}
default:
break;
}
}
catch( wxFBException& ex )
{
wxLogError( ex.what() );
}
}
if ( !property )
{
if ( GetNextToken() == TOK_PROPERTY )
{
wxString propname = ParsePropertyName( childName );
property = m_obj->GetProperty( propname );
}
}
return property;
}
void TemplateParser::ignore_whitespaces()
{
wxChar peek( m_in.Peek() );
while ( peek != wxChar(EOF) && !m_in.Eof() && peek == wxT(' ') )
{
m_in.GetC();
peek = wxChar( m_in.Peek() );
}
}
bool TemplateParser::ParseIfNotNull()
{
ignore_whitespaces();
// Get the property
wxString childName;
PProperty property( GetProperty( &childName ) );
if ( !property )
{
return false;
}
wxString inner_template = ExtractInnerTemplate();
if ( !property->IsNull() )
{
if ( !childName.empty() )
{
if ( property->GetChildFromParent( childName ).empty() )
{
return true;
}
}
// Generate the code from the block
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
}
return true;
}
bool TemplateParser::ParseIfNull()
{
ignore_whitespaces();
// Get the property
wxString childName;
PProperty property( GetProperty( &childName ) );
if ( !property )
{
return false;
}
wxString inner_template = ExtractInnerTemplate();
if ( property->IsNull() )
{
// Generate the code from the block
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
}
else
{
if ( !childName.empty() )
{
if ( property->GetChildFromParent( childName ).empty() )
{
// Generate the code from the block
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
}
}
}
return true;
}
wxString TemplateParser::ExtractLiteral()
{
wxString os;
wxChar c;
// Whitespaces at the very start are ignored
ignore_whitespaces();
c = wxChar(m_in.GetC()); // Initial quotation mark
if ( c == wxT('"') )
{
bool end = false;
// Beginning the template extraction
while (!end && !m_in.Eof() && m_in.Peek() != EOF )
{
c = wxChar(m_in.GetC()); // obtaining one char
// Checking for a possible closing quotation mark
if ( c == wxT('"') )
{
if ( m_in.Peek() == wxT('"') ) // Char (") denoted as ("")
{
m_in.GetC(); // Second quotation mark is ignored
os << wxT('"');
}
else // Closing
{
end = true;
// All the following chars are ignored up to an space char,
// so we can avoid errors like "hello"world" -> "hello"
wxChar peek( m_in.Peek() );
while (peek != wxChar(EOF) && !m_in.Eof() && peek != wxT(' ') )
{
m_in.GetC();
peek = wxChar( m_in.Peek() );
}
}
}
else // one char from literal (N.B. ??)
os << c;
}
}
return os;
}
bool TemplateParser::ParseIfEqual()
{
// ignore leading whitespace
ignore_whitespaces();
// Get the property
wxString childName;
PProperty property( GetProperty( &childName ) );
if ( property )
{
// Get the value to compare to
wxString value = ExtractLiteral();
// Get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// Get the value of the property
wxString propValue;
if ( childName.empty() )
{
propValue = property->GetValue();
}
else
{
propValue = property->GetChildFromParent( childName );
}
// Compare
//if ( propValue == value )
if ( IsEqual( propValue, value ) )
{
// Generate the code
PTemplateParser parser = CreateParser(this,inner_template);
m_out << parser->ParseTemplate();
return true;
}
}
return false;
}
bool TemplateParser::ParseIfNotEqual()
{
// ignore leading whitespace
ignore_whitespaces();
// Get the property
wxString childName;
PProperty property( GetProperty( &childName ) );
if ( property )
{
// Get the value to compare to
wxString value = ExtractLiteral();
// Get the template to generate if comparison is false
wxString inner_template = ExtractInnerTemplate();
// Get the value of the property
wxString propValue;
if ( childName.empty() )
{
propValue = property->GetValue();
}
else
{
propValue = property->GetChildFromParent( childName );
}
// Compare
if ( propValue != value )
{
// Generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();;
return true;
}
}
return false;
}
bool TemplateParser::ParseIfParentTypeEqual()
{
PObjectBase parent( m_obj->GetParent() );
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( parent && IsEqual( parent->GetObjectTypeName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
bool TemplateParser::ParseIfParentTypeNotEqual()
{
PObjectBase parent( m_obj->GetParent() );
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( parent && ! IsEqual( parent->GetObjectTypeName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
bool TemplateParser::ParseIfParentClassEqual()
{
PObjectBase parent( m_obj->GetParent() );
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( parent && IsEqual( parent->GetClassName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
bool TemplateParser::ParseIfParentClassNotEqual()
{
PObjectBase parent( m_obj->GetParent() );
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( parent && ! IsEqual( parent->GetClassName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
bool TemplateParser::ParseIfTypeEqual()
{
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( IsEqual( m_obj->GetObjectTypeName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
bool TemplateParser::ParseIfTypeNotEqual()
{
// get examined type name
wxString type = ExtractLiteral();
// get the template to generate if comparison is true
wxString inner_template = ExtractInnerTemplate();
// compare give type name with type of the wx parent object
if( !IsEqual( m_obj->GetObjectTypeName(), type) )
{
// generate the code
PTemplateParser parser = CreateParser( this, inner_template );
m_out << parser->ParseTemplate();
return true;
}
return false;
}
TemplateParser::Ident TemplateParser::SearchIdent(wxString ident)
{
// LogDebug("Parsing command %s",ident.c_str());
if (ident == wxT("wxparent") )
return ID_WXPARENT;
else if (ident == wxT("ifnotnull") )
return ID_IFNOTNULL;
else if (ident == wxT("ifnull") )
return ID_IFNULL;
else if (ident == wxT("foreach") )
return ID_FOREACH;
else if (ident == wxT("pred") )
return ID_PREDEFINED;
else if (ident == wxT("npred") )
return ID_PREDEFINED_INDEX;
else if (ident == wxT("child") )
return ID_CHILD;
else if (ident == wxT("parent") )
return ID_PARENT;
else if (ident == wxT("nl") )
return ID_NEWLINE;
else if (ident == wxT("ifequal") )
return ID_IFEQUAL;
else if (ident == wxT("ifnotequal") )
return ID_IFNOTEQUAL;
else if (ident == wxT("ifparenttypeequal") )
return ID_IFPARENTTYPEEQUAL;
else if (ident == wxT("ifparentclassequal") )
return ID_IFPARENTCLASSEQUAL;
else if (ident == wxT("ifparenttypenotequal") )
return ID_IFPARENTTYPENOTEQUAL;
else if (ident == wxT("ifparentclassnotequal") )
return ID_IFPARENTCLASSNOTEQUAL;
else if (ident == wxT("append") )
return ID_APPEND;
else if (ident == wxT("class") )
return ID_CLASS;
else if (ident == wxT("form") || ident == wxT("wizard"))
return ID_FORM;
else if (ident == wxT("indent") )
return ID_INDENT;
else if (ident == wxT("unindent") )
return ID_UNINDENT;
else if (ident == wxT("iftypeequal") )
return ID_IFTYPEEQUAL;
else if (ident == wxT("iftypenotequal") )
return ID_IFTYPENOTEQUAL;
else if(ident == wxT("utbl"))
return ID_UTBL;
else
THROW_WXFBEX( wxString::Format( wxT("Unknown macro: \"%s\""), ident.c_str() ) );
}
wxString TemplateParser::ParseTemplate()
{
try
{
while (!m_in.Eof())
{
Token token = GetNextToken();
switch (token)
{
case TOK_MACRO:
ParseMacro();
break;
case TOK_PROPERTY:
ParseProperty();
break;
case TOK_TEXT:
ParseText();
break;
default:
return wxEmptyString;
}
}
}
catch ( wxFBException& ex )
{
wxLogError( ex.what() );
}