1212 lines
31 KiB
C++
1212 lines
31 KiB
C++
/*
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This file is part of libeval, a simple math expression evaluator
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Copyright (C) 2017 Michael Geselbracht, mgeselbracht3@gmail.com
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Copyright (C) 2019-2020 KiCad Developers, see AUTHORS.txt for contributors.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <memory>
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#include <set>
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#include <vector>
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#include <algorithm>
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#include <kicad_string.h>
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#ifdef DEBUG
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#include <cstdarg>
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#endif
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#include <libeval_compiler/libeval_compiler.h>
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/* The (generated) lemon parser is written in C.
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* In order to keep its symbol from the global namespace include the parser code with
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* a C++ namespace.
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*/
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namespace LIBEVAL
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{
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#ifdef __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-variable"
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#pragma GCC diagnostic ignored "-Wsign-compare"
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#endif
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#include <libeval_compiler/grammar.c>
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#include <libeval_compiler/grammar.h>
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#ifdef __GNUC__
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#pragma GCC diagnostic pop
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#endif
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#define libeval_dbg(level, fmt, ...) \
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wxLogTrace( "libeval_compiler", fmt, __VA_ARGS__ );
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TREE_NODE* newNode( LIBEVAL::COMPILER* compiler, int op, const T_TOKEN_VALUE& value )
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{
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auto t2 = new TREE_NODE();
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t2->valid = true;
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t2->value.str = value.str ? new wxString( *value.str ) : nullptr;
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t2->value.num = value.num;
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t2->value.idx = value.idx;
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t2->op = op;
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t2->leaf[0] = nullptr;
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t2->leaf[1] = nullptr;
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t2->isTerminal = false;
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t2->srcPos = compiler->GetSourcePos();
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t2->uop = nullptr;
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libeval_dbg(10, " ostr %p nstr %p nnode %p op %d", value.str, t2->value.str, t2, t2->op );
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if(t2->value.str)
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compiler->GcItem( t2->value.str );
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compiler->GcItem( t2 );
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return t2;
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}
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static const wxString formatOpName( int op )
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{
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static const struct
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{
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int op;
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wxString mnemonic;
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}
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simpleOps[] =
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{
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{ TR_OP_MUL, "MUL" }, { TR_OP_DIV, "DIV" }, { TR_OP_ADD, "ADD" },
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{ TR_OP_SUB, "SUB" }, { TR_OP_LESS, "LESS" }, { TR_OP_GREATER, "GREATER" },
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{ TR_OP_LESS_EQUAL, "LESS_EQUAL" }, { TR_OP_GREATER_EQUAL, "GREATER_EQUAL" },
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{ TR_OP_EQUAL, "EQUAL" }, { TR_OP_NOT_EQUAL, "NEQUAL" }, { TR_OP_BOOL_AND, "AND" },
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{ TR_OP_BOOL_OR, "OR" }, { TR_OP_BOOL_NOT, "NOT" }, { -1, "" }
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};
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for( int i = 0; simpleOps[i].op >= 0; i++ )
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{
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if( simpleOps[i].op == op )
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return simpleOps[i].mnemonic;
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}
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return "???";
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}
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bool VALUE::EqualTo( const VALUE* b ) const
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{
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if( m_type == VT_UNDEFINED || b->m_type == VT_UNDEFINED )
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return false;
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if( m_type == VT_NUMERIC && b->m_type == VT_NUMERIC )
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{
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return m_valueDbl == b->m_valueDbl;
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}
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else if( m_type == VT_STRING && b->m_type == VT_STRING )
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{
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if( b->m_stringIsWildcard )
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return WildCompareString( b->m_valueStr, m_valueStr, false );
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else
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return !m_valueStr.CmpNoCase( b->m_valueStr );
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}
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return false;
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}
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bool VALUE::NotEqualTo( const VALUE* b ) const
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{
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if( m_type == VT_UNDEFINED || b->m_type == VT_UNDEFINED )
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return false;
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return !EqualTo( b );
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}
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wxString UOP::Format() const
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{
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wxString str;
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switch( m_op )
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{
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case TR_UOP_PUSH_VAR:
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str = wxString::Format( "PUSH VAR [%p]", m_ref.get() );
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break;
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case TR_UOP_PUSH_VALUE:
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{
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if( !m_value )
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str = wxString::Format( "PUSH nullptr" );
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else if( m_value->GetType() == VT_NUMERIC )
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str = wxString::Format( "PUSH NUM [%.10f]", m_value->AsDouble() );
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else
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str = wxString::Format( "PUSH STR [%ls]", m_value->AsString() );
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}
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break;
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case TR_OP_METHOD_CALL:
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str = wxString::Format( "MCALL" );
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break;
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case TR_OP_FUNC_CALL:
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str = wxString::Format( "FCALL" );
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break;
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default:
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str = wxString::Format( "%s %d", formatOpName( m_op ).c_str(), m_op );
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break;
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}
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return str;
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}
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UCODE::~UCODE()
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{
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for ( auto op : m_ucode )
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{
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delete op;
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}
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}
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wxString UCODE::Dump() const
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{
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wxString rv;
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for( auto op : m_ucode )
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{
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rv += op->Format();
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rv += "\n";
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}
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return rv;
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};
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wxString TOKENIZER::GetChars( const std::function<bool( wxUniChar )>& cond ) const
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{
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wxString rv;
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size_t p = m_pos;
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while( p < m_str.length() && cond( m_str[p] ) )
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{
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rv.append( 1, m_str[p] );
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p++;
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}
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return rv;
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}
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bool TOKENIZER::MatchAhead( const wxString& match,
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const std::function<bool( wxUniChar )>& stopCond ) const
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{
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int remaining = (int) m_str.Length() - m_pos;
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if( remaining < (int) match.length() )
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return false;
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if( m_str.substr( m_pos, match.length() ) == match )
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return ( remaining == (int) match.length() || stopCond( m_str[m_pos + match.length()] ) );
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return false;
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}
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COMPILER::COMPILER() :
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m_lexerState( COMPILER::LS_DEFAULT )
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{
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m_localeDecimalSeparator = '.';
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m_sourcePos = 0;
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m_parseFinished = false;
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m_unitResolver = std::make_unique<UNIT_RESOLVER>();
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m_parser = LIBEVAL::ParseAlloc( malloc );
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m_tree = nullptr;
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m_errorStatus.pendingError = false;
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}
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COMPILER::~COMPILER()
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{
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LIBEVAL::ParseFree( m_parser, free );
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if( m_tree )
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{
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freeTree( m_tree );
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}
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// Allow explicit call to destructor
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m_parser = nullptr;
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Clear();
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}
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void COMPILER::Clear()
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{
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//free( current.token );
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m_tokenizer.Clear();
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if( m_tree )
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{
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freeTree( m_tree );
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m_tree = nullptr;
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}
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m_tree = nullptr;
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for( auto tok : m_gcItems )
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delete tok;
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for( auto tok: m_gcStrings )
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delete tok;
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m_gcItems.clear();
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m_gcStrings.clear();
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}
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void COMPILER::parseError( const char* s )
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{
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reportError( CST_PARSE, s );
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}
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void COMPILER::parseOk()
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{
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m_parseFinished = true;
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}
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bool COMPILER::Compile( const wxString& aString, UCODE* aCode, CONTEXT* aPreflightContext )
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{
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// Feed parser token after token until end of input.
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newString( aString );
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if( m_tree )
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{
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freeTree( m_tree );
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m_tree = nullptr;
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}
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m_tree = nullptr;
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m_parseFinished = false;
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T_TOKEN tok( defaultToken );
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libeval_dbg(0, "str: '%s' empty: %d\n", aString.c_str(), !!aString.empty() );
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if( aString.empty() )
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{
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m_parseFinished = true;
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return generateUCode( aCode, aPreflightContext );
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}
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do
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{
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m_sourcePos = m_tokenizer.GetPos();
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tok = getToken();
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if( tok.value.str )
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GcItem( tok.value.str );
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libeval_dbg(10, "parse: tok %d valstr %p\n", tok.token, tok.value.str );
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Parse( m_parser, tok.token, tok, this );
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if ( m_errorStatus.pendingError )
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return false;
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if( m_parseFinished || tok.token == G_ENDS )
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{
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// Reset parser by passing zero as token ID, value is ignored.
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Parse( m_parser, 0, tok, this );
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break;
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}
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} while( tok.token );
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return generateUCode( aCode, aPreflightContext );
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}
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void COMPILER::newString( const wxString& aString )
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{
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Clear();
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m_lexerState = LS_DEFAULT;
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m_tokenizer.Restart( aString );
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m_parseFinished = false;
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}
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T_TOKEN COMPILER::getToken()
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{
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T_TOKEN rv;
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rv.value.str = nullptr;
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bool done = false;
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do
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{
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switch( m_lexerState )
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{
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case LS_DEFAULT:
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done = lexDefault( rv );
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break;
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case LS_STRING:
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done = lexString( rv );
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break;
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}
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} while( !done );
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return rv;
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}
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bool COMPILER::lexString( T_TOKEN& aToken )
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{
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wxString str = m_tokenizer.GetChars( []( int c ) -> bool { return c != '\''; } );
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aToken.token = G_STRING;
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aToken.value.str = new wxString( str );
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m_tokenizer.NextChar( str.length() + 1 );
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m_lexerState = LS_DEFAULT;
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return true;
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}
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int COMPILER::resolveUnits()
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{
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int unitId = 0;
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for( const wxString& unitName : m_unitResolver->GetSupportedUnits() )
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{
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if( m_tokenizer.MatchAhead( unitName, []( int c ) -> bool { return !isalnum( c ); } ) )
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{
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libeval_dbg(10, "Match unit '%s'\n", unitName.c_str() );
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m_tokenizer.NextChar( unitName.length() );
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return unitId;
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}
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unitId++;
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}
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return -1;
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}
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bool COMPILER::lexDefault( T_TOKEN& aToken )
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{
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T_TOKEN retval;
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wxString current;
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int convertFrom;
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wxString msg;
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retval.value.str = nullptr;
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retval.token = G_ENDS;
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if( m_tokenizer.Done() )
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{
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aToken = retval;
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return true;
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}
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auto isDecimalSeparator =
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[&]( wxUniChar ch ) -> bool
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{
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return ( ch == m_localeDecimalSeparator || ch == '.' || ch == ',' );
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};
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// Lambda: get value as string, store into clToken.token and update current index.
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auto extractNumber =
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[&]()
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{
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bool haveSeparator = false;
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wxUniChar ch = m_tokenizer.GetChar();
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do
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{
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if( isDecimalSeparator( ch ) && haveSeparator )
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break;
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current.append( 1, ch );
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if( isDecimalSeparator( ch ) )
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haveSeparator = true;
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m_tokenizer.NextChar();
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ch = m_tokenizer.GetChar();
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} while( isdigit( ch ) || isDecimalSeparator( ch ) );
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// Ensure that the systems decimal separator is used
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for( int i = current.length(); i; i-- )
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{
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if( isDecimalSeparator( current[i - 1] ) )
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current[i - 1] = m_localeDecimalSeparator;
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}
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};
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int ch;
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// Start processing of first/next token: Remove whitespace
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for( ;; )
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{
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ch = m_tokenizer.GetChar();
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if( ch == ' ' )
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m_tokenizer.NextChar();
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else
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break;
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}
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libeval_dbg(10, "LEX ch '%c' pos %lu\n", ch, (unsigned long)m_tokenizer.GetPos() );
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if( ch == 0 )
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{
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/* End of input */
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}
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else if( isdigit( ch ) )
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{
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// VALUE
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extractNumber();
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retval.token = G_VALUE;
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retval.value.str = new wxString( current );
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}
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else if( ( convertFrom = resolveUnits() ) >= 0 )
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{
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// UNIT
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// Units are appended to a VALUE.
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// Determine factor to default unit if unit for value is given.
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// Example: Default is mm, unit is inch: factor is 25.4
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// The factor is assigned to the terminal UNIT. The actual
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// conversion is done within a parser action.
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retval.token = G_UNIT;
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retval.value.idx = convertFrom;
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}
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else if( ch == '\'' ) // string literal
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{
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m_lexerState = LS_STRING;
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m_tokenizer.NextChar();
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return false;
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}
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else if( isalpha( ch ) || ch == '_' )
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{
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current = m_tokenizer.GetChars( []( int c ) -> bool { return isalnum( c ) || c == '_'; } );
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retval.token = G_IDENTIFIER;
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retval.value.str = new wxString( current );
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m_tokenizer.NextChar( current.length() );
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}
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else if( m_tokenizer.MatchAhead( "==", []( int c ) -> bool { return c != '='; } ) )
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{
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retval.token = G_EQUAL;
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m_tokenizer.NextChar( 2 );
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}
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else if( m_tokenizer.MatchAhead( "!=", []( int c ) -> bool { return c != '='; } ) )
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{
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retval.token = G_NOT_EQUAL;
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m_tokenizer.NextChar( 2 );
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}
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else if( m_tokenizer.MatchAhead( "<=", []( int c ) -> bool { return c != '='; } ) )
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{
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retval.token = G_LESS_EQUAL_THAN;
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m_tokenizer.NextChar( 2 );
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}
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else if( m_tokenizer.MatchAhead( ">=", []( int c ) -> bool { return c != '='; } ) )
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{
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retval.token = G_GREATER_EQUAL_THAN;
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m_tokenizer.NextChar( 2 );
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}
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else if( m_tokenizer.MatchAhead( "&&", []( int c ) -> bool { return c != '&'; } ) )
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{
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retval.token = G_BOOL_AND;
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m_tokenizer.NextChar( 2 );
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}
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else if( m_tokenizer.MatchAhead( "||", []( int c ) -> bool { return c != '|'; } ) )
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{
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retval.token = G_BOOL_OR;
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m_tokenizer.NextChar( 2 );
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}
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else
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{
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// Single char tokens
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switch( ch )
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{
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case '+': retval.token = G_PLUS; break;
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case '!': retval.token = G_BOOL_NOT; break;
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case '-': retval.token = G_MINUS; break;
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case '*': retval.token = G_MULT; break;
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case '/': retval.token = G_DIVIDE; break;
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case '<': retval.token = G_LESS_THAN; break;
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case '>': retval.token = G_GREATER_THAN; break;
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case '(': retval.token = G_PARENL; break;
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case ')': retval.token = G_PARENR; break;
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case ';': retval.token = G_SEMCOL; break;
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case '.': retval.token = G_STRUCT_REF; break;
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case ',': retval.token = G_COMMA; break;
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default:
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reportError( CST_PARSE, wxString::Format( _( "Unrecognized character '%c'" ),
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(char) ch ) );
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break;
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}
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m_tokenizer.NextChar();
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}
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aToken = retval;
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return true;
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}
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const wxString formatNode( TREE_NODE* node )
|
|
{
|
|
return node->value.str ? *(node->value.str) : "";
|
|
}
|
|
|
|
|
|
void dumpNode( wxString& buf, TREE_NODE* tok, int depth = 0 )
|
|
{
|
|
wxString str;
|
|
|
|
if( !tok )
|
|
return;
|
|
|
|
str.Printf( "\n[%p L0:%-20p L1:%-20p] ", tok, tok->leaf[0], tok->leaf[1] );
|
|
buf += str;
|
|
|
|
for( int i = 0; i < 2 * depth; i++ )
|
|
buf += " ";
|
|
|
|
if( tok->op & TR_OP_BINARY_MASK )
|
|
{
|
|
buf += formatOpName( tok->op );
|
|
dumpNode( buf, tok->leaf[0], depth + 1 );
|
|
dumpNode( buf, tok->leaf[1], depth + 1 );
|
|
}
|
|
|
|
switch( tok->op )
|
|
{
|
|
case TR_NUMBER:
|
|
buf += "NUMERIC: ";
|
|
buf += formatNode( tok );
|
|
|
|
if( tok->leaf[0] )
|
|
dumpNode( buf, tok->leaf[0], depth + 1 );
|
|
|
|
break;
|
|
|
|
case TR_ARG_LIST:
|
|
buf += "ARG_LIST: ";
|
|
buf += formatNode( tok );
|
|
|
|
if( tok->leaf[0] )
|
|
dumpNode( buf, tok->leaf[0], depth + 1 );
|
|
if( tok->leaf[1] )
|
|
dumpNode( buf, tok->leaf[1], depth + 1 );
|
|
|
|
break;
|
|
|
|
case TR_STRING:
|
|
buf += "STRING: ";
|
|
buf += formatNode( tok );
|
|
break;
|
|
|
|
case TR_IDENTIFIER:
|
|
buf += "ID: ";
|
|
buf += formatNode( tok );
|
|
break;
|
|
|
|
case TR_STRUCT_REF:
|
|
buf += "SREF: ";
|
|
dumpNode( buf, tok->leaf[0], depth + 1 );
|
|
dumpNode( buf, tok->leaf[1], depth + 1 );
|
|
break;
|
|
|
|
case TR_OP_FUNC_CALL:
|
|
buf += "CALL '";
|
|
buf += *tok->leaf[0]->value.str;
|
|
buf += "': ";
|
|
dumpNode( buf, tok->leaf[1], depth + 1 );
|
|
break;
|
|
|
|
case TR_UNIT:
|
|
str.Printf( "UNIT: %d ", tok->value.idx );
|
|
buf += str;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void CONTEXT::ReportError( const wxString& aErrorMsg )
|
|
{
|
|
m_errorStatus.pendingError = true;
|
|
m_errorStatus.message = aErrorMsg;
|
|
m_errorStatus.srcPos = -1;
|
|
m_errorStatus.stage = CST_RUNTIME;
|
|
|
|
if( m_errorCallback )
|
|
m_errorCallback( m_errorStatus.message, m_errorStatus.srcPos );
|
|
}
|
|
|
|
|
|
void COMPILER::reportError( COMPILATION_STAGE stage, const wxString& aErrorMsg, int aPos )
|
|
{
|
|
if( aPos == -1 )
|
|
aPos = m_sourcePos;
|
|
|
|
m_errorStatus.pendingError = true;
|
|
m_errorStatus.stage = stage;
|
|
m_errorStatus.message = aErrorMsg;
|
|
m_errorStatus.srcPos = aPos;
|
|
|
|
if( m_errorCallback )
|
|
m_errorCallback( aErrorMsg, aPos );
|
|
}
|
|
|
|
|
|
void COMPILER::setRoot( TREE_NODE *root )
|
|
{
|
|
m_tree = root;
|
|
}
|
|
|
|
|
|
void COMPILER::freeTree( LIBEVAL::TREE_NODE *tree )
|
|
{
|
|
if ( tree->leaf[0] )
|
|
freeTree( tree->leaf[0] );
|
|
|
|
if ( tree->leaf[1] )
|
|
freeTree( tree->leaf[1] );
|
|
|
|
delete tree->uop;
|
|
}
|
|
|
|
|
|
void TREE_NODE::SetUop( int aOp, double aValue )
|
|
{
|
|
delete uop;
|
|
|
|
std::unique_ptr<VALUE> val = std::make_unique<VALUE>( aValue );
|
|
uop = new UOP( aOp, std::move( val ) );
|
|
}
|
|
|
|
|
|
void TREE_NODE::SetUop( int aOp, const wxString& aValue, bool aStringIsWildcard )
|
|
{
|
|
delete uop;
|
|
|
|
std::unique_ptr<VALUE> val = std::make_unique<VALUE>( aValue, aStringIsWildcard );
|
|
uop = new UOP( aOp, std::move( val ) );
|
|
}
|
|
|
|
|
|
void TREE_NODE::SetUop( int aOp, std::unique_ptr<VAR_REF> aRef )
|
|
{
|
|
delete uop;
|
|
|
|
uop = new UOP( aOp, std::move( aRef ) );
|
|
}
|
|
|
|
|
|
void TREE_NODE::SetUop( int aOp, FUNC_CALL_REF aFunc, std::unique_ptr<VAR_REF> aRef )
|
|
{
|
|
delete uop;
|
|
|
|
uop = new UOP( aOp, std::move( aFunc ), std::move( aRef ) );
|
|
}
|
|
|
|
|
|
static void prepareTree( LIBEVAL::TREE_NODE *node )
|
|
{
|
|
node->isVisited = false;
|
|
|
|
// fixme: for reasons I don't understand the lemon parser isn't initializing the
|
|
// leaf node pointers of function name nodes. -JY
|
|
if( node->op == TR_OP_FUNC_CALL && node->leaf[0] )
|
|
{
|
|
node->leaf[0]->leaf[0] = nullptr;
|
|
node->leaf[0]->leaf[1] = nullptr;
|
|
}
|
|
|
|
if ( node->leaf[0] )
|
|
prepareTree( node->leaf[0] );
|
|
|
|
if ( node->leaf[1] )
|
|
prepareTree( node->leaf[1] );
|
|
}
|
|
|
|
static std::vector<TREE_NODE*> squashParamList( TREE_NODE* root )
|
|
{
|
|
std::vector<TREE_NODE*> args;
|
|
|
|
if( !root )
|
|
{
|
|
return args;
|
|
}
|
|
|
|
if( root->op != TR_ARG_LIST && root->op != TR_NULL )
|
|
{
|
|
args.push_back( root );
|
|
}
|
|
else
|
|
{
|
|
TREE_NODE *n = root;
|
|
do
|
|
{
|
|
if( n->leaf[1] )
|
|
args.push_back(n->leaf[1]);
|
|
|
|
n = n->leaf[0];
|
|
} while ( n && n->op == TR_ARG_LIST );
|
|
|
|
if( n )
|
|
{
|
|
args.push_back(n);
|
|
}
|
|
}
|
|
|
|
std::reverse( args.begin(), args.end() );
|
|
|
|
for( size_t i = 0; i < args.size(); i++ )
|
|
libeval_dbg(10, "squash arg%d: %s\n", int( i ), *args[i]->value.str );
|
|
|
|
return args;
|
|
}
|
|
|
|
|
|
bool COMPILER::generateUCode( UCODE* aCode, CONTEXT* aPreflightContext )
|
|
{
|
|
std::vector<TREE_NODE*> stack;
|
|
wxString msg;
|
|
|
|
if( !m_tree )
|
|
{
|
|
std::unique_ptr<VALUE> val = std::make_unique<VALUE>( 1.0 );
|
|
// Empty expression returns true
|
|
aCode->AddOp( new UOP( TR_UOP_PUSH_VALUE, std::move(val) ) );
|
|
return true;
|
|
}
|
|
|
|
prepareTree( m_tree );
|
|
|
|
stack.push_back( m_tree );
|
|
|
|
wxString dump;
|
|
|
|
dumpNode( dump, m_tree, 0 );
|
|
libeval_dbg( 3, "Tree dump:\n%s\n\n", (const char*) dump.c_str() );
|
|
|
|
while( !stack.empty() )
|
|
{
|
|
TREE_NODE* node = stack.back();
|
|
|
|
libeval_dbg( 4, "process node %p [op %d] [stack %lu]\n",
|
|
node, node->op, (unsigned long)stack.size() );
|
|
|
|
// process terminal nodes first
|
|
switch( node->op )
|
|
{
|
|
case TR_OP_FUNC_CALL:
|
|
// Function call's uop was generated inside TR_STRUCT_REF
|
|
if( !node->uop )
|
|
{
|
|
reportError( CST_CODEGEN, _( "Unknown parent of function parameters" ),
|
|
node->srcPos );
|
|
}
|
|
|
|
node->isTerminal = true;
|
|
break;
|
|
|
|
case TR_STRUCT_REF:
|
|
{
|
|
// leaf[0]: object
|
|
// leaf[1]: field (TR_IDENTIFIER) or TR_OP_FUNC_CALL
|
|
|
|
if( node->leaf[0]->op != TR_IDENTIFIER )
|
|
{
|
|
reportError( CST_CODEGEN, _( "Unknown parent of property" ),
|
|
node->leaf[0]->srcPos - (int) node->leaf[0]->value.str->length() );
|
|
}
|
|
|
|
switch( node->leaf[1]->op )
|
|
{
|
|
case TR_IDENTIFIER:
|
|
{
|
|
// leaf[0]: object
|
|
// leaf[1]: field
|
|
|
|
wxString itemName = *node->leaf[0]->value.str;
|
|
wxString propName = *node->leaf[1]->value.str;
|
|
std::unique_ptr<VAR_REF> vref = aCode->CreateVarRef( itemName, propName );
|
|
|
|
if( !vref )
|
|
{
|
|
msg.Printf( _( "Unrecognized item '%s'" ), itemName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[0]->srcPos - (int) itemName.length() );
|
|
}
|
|
else if( vref->GetType() == VT_PARSE_ERROR )
|
|
{
|
|
msg.Printf( _( "Unrecognized property '%s'" ), propName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[1]->srcPos - (int) propName.length() );
|
|
}
|
|
|
|
node->leaf[0]->isVisited = true;
|
|
node->leaf[1]->isVisited = true;
|
|
|
|
node->SetUop( TR_UOP_PUSH_VAR, std::move( vref ) );
|
|
node->isTerminal = true;
|
|
break;
|
|
}
|
|
case TR_OP_FUNC_CALL:
|
|
{
|
|
// leaf[0]: object
|
|
// leaf[1]: TR_OP_FUNC_CALL
|
|
// leaf[0]: function name
|
|
// leaf[1]: parameter
|
|
|
|
wxString itemName = *node->leaf[0]->value.str;
|
|
std::unique_ptr<VAR_REF> vref = aCode->CreateVarRef( itemName, "" );
|
|
|
|
if( !vref )
|
|
{
|
|
msg.Printf( _( "Unrecognized item '%s'" ), itemName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[0]->srcPos - (int) itemName.length() );
|
|
}
|
|
|
|
wxString functionName = *node->leaf[1]->leaf[0]->value.str;
|
|
auto func = aCode->CreateFuncCall( functionName );
|
|
std::vector<TREE_NODE*> params = squashParamList( node->leaf[1]->leaf[1] );
|
|
|
|
libeval_dbg( 10, "emit func call: %s\n", functionName );
|
|
|
|
if( !func )
|
|
{
|
|
msg.Printf( _( "Unrecognized function '%s'" ), functionName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[0]->srcPos + 1 );
|
|
}
|
|
|
|
if( func )
|
|
{
|
|
// Preflight the function call
|
|
|
|
for( TREE_NODE* pnode : params )
|
|
{
|
|
VALUE* param = aPreflightContext->AllocValue();
|
|
param->Set( *pnode->value.str );
|
|
aPreflightContext->Push( param );
|
|
}
|
|
|
|
aPreflightContext->SetErrorCallback(
|
|
[&]( const wxString& aMessage, int aOffset )
|
|
{
|
|
size_t loc = node->leaf[1]->leaf[1]->srcPos;
|
|
reportError( CST_CODEGEN, aMessage, (int) loc - 1 );
|
|
} );
|
|
|
|
try
|
|
{
|
|
func( aPreflightContext, vref.get() );
|
|
aPreflightContext->Pop(); // return value
|
|
}
|
|
catch( ... )
|
|
{
|
|
}
|
|
}
|
|
|
|
node->leaf[0]->isVisited = true;
|
|
node->leaf[1]->isVisited = true;
|
|
node->leaf[1]->leaf[0]->isVisited = true;
|
|
node->leaf[1]->leaf[1]->isVisited = true;
|
|
|
|
// Our non-terminal-node stacking algorithm can't handle doubly-nested
|
|
// structures so we need to pop a level by replacing the TR_STRUCT_REF with
|
|
// a TR_OP_FUNC_CALL and its function parameter
|
|
stack.pop_back();
|
|
stack.push_back( node->leaf[1] );
|
|
|
|
for( TREE_NODE* pnode : params )
|
|
stack.push_back( pnode );
|
|
|
|
node->leaf[1]->SetUop( TR_OP_METHOD_CALL, func, std::move( vref ) );
|
|
node->isTerminal = false;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
// leaf[0]: object
|
|
// leaf[1]: malformed syntax
|
|
|
|
wxString itemName = *node->leaf[0]->value.str;
|
|
wxString propName = *node->leaf[1]->value.str;
|
|
std::unique_ptr<VAR_REF> vref = aCode->CreateVarRef( itemName, propName );
|
|
|
|
if( !vref )
|
|
{
|
|
msg.Printf( _( "Unrecognized item '%s'" ), itemName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[0]->srcPos - (int) itemName.length() );
|
|
}
|
|
|
|
msg.Printf( _( "Unrecognized property '%s'" ), propName );
|
|
reportError( CST_CODEGEN, msg, node->leaf[0]->srcPos + 1 );
|
|
|
|
node->leaf[0]->isVisited = true;
|
|
node->leaf[1]->isVisited = true;
|
|
|
|
node->SetUop( TR_UOP_PUSH_VALUE, 0.0 );
|
|
node->isTerminal = true;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case TR_NUMBER:
|
|
{
|
|
TREE_NODE* son = node->leaf[0];
|
|
double value;
|
|
|
|
if( !node->value.str )
|
|
{
|
|
value = 0.0;
|
|
}
|
|
else if( son && son->op == TR_UNIT )
|
|
{
|
|
int units = son->value.idx;
|
|
value = m_unitResolver->Convert( *node->value.str, units );
|
|
son->isVisited = true;
|
|
}
|
|
else
|
|
{
|
|
msg.Printf( _( "Missing units for '%s'| (%s)" ),
|
|
*node->value.str,
|
|
m_unitResolver->GetSupportedUnitsMessage() );
|
|
reportError( CST_CODEGEN, msg, node->srcPos );
|
|
|
|
value = DoubleValueFromString( EDA_UNITS::UNSCALED, *node->value.str );
|
|
}
|
|
|
|
node->SetUop( TR_UOP_PUSH_VALUE, value );
|
|
node->isTerminal = true;
|
|
break;
|
|
}
|
|
|
|
case TR_STRING:
|
|
{
|
|
wxString str = *node->value.str;
|
|
bool isWildcard = str.Contains("?") || str.Contains("*");
|
|
node->SetUop( TR_UOP_PUSH_VALUE, str, isWildcard );
|
|
node->isTerminal = true;
|
|
break;
|
|
}
|
|
|
|
case TR_IDENTIFIER:
|
|
{
|
|
std::unique_ptr<VAR_REF> vref = aCode->CreateVarRef( *node->value.str, "" );
|
|
|
|
if( !vref )
|
|
{
|
|
msg.Printf( _( "Unrecognized item '%s'" ), *node->value.str );
|
|
reportError( CST_CODEGEN, msg, node->srcPos - (int) node->value.str->length() );
|
|
}
|
|
|
|
node->SetUop( TR_UOP_PUSH_VALUE, std::move( vref ) );
|
|
node->isTerminal = true;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
node->SetUop( node->op );
|
|
node->isTerminal = ( !node->leaf[0] || node->leaf[0]->isVisited )
|
|
&& ( !node->leaf[1] || node->leaf[1]->isVisited );
|
|
break;
|
|
}
|
|
|
|
if( !node->isTerminal )
|
|
{
|
|
if( node->leaf[0] && !node->leaf[0]->isVisited )
|
|
{
|
|
stack.push_back( node->leaf[0] );
|
|
node->leaf[0]->isVisited = true;
|
|
continue;
|
|
}
|
|
else if( node->leaf[1] && !node->leaf[1]->isVisited )
|
|
{
|
|
stack.push_back( node->leaf[1] );
|
|
node->leaf[1]->isVisited = true;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
node->isVisited = true;
|
|
|
|
if( node->uop )
|
|
{
|
|
aCode->AddOp( node->uop );
|
|
node->uop = nullptr;
|
|
}
|
|
|
|
stack.pop_back();
|
|
}
|
|
|
|
libeval_dbg(2,"dump: \n%s\n", aCode->Dump().c_str() );
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void UOP::Exec( CONTEXT* ctx )
|
|
{
|
|
switch( m_op )
|
|
{
|
|
case TR_UOP_PUSH_VAR:
|
|
{
|
|
auto value = ctx->AllocValue();
|
|
value->Set( m_ref->GetValue( ctx ) );
|
|
ctx->Push( value );
|
|
}
|
|
break;
|
|
|
|
case TR_UOP_PUSH_VALUE:
|
|
ctx->Push( m_value.get() );
|
|
return;
|
|
|
|
case TR_OP_METHOD_CALL:
|
|
m_func( ctx, m_ref.get() );
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if( m_op & TR_OP_BINARY_MASK )
|
|
{
|
|
LIBEVAL::VALUE* arg2 = ctx->Pop();
|
|
LIBEVAL::VALUE* arg1 = ctx->Pop();
|
|
double arg2Value = arg2 ? arg2->AsDouble() : 0.0;
|
|
double arg1Value = arg1 ? arg1->AsDouble() : 0.0;
|
|
double result;
|
|
|
|
switch( m_op )
|
|
{
|
|
case TR_OP_ADD:
|
|
result = arg1Value + arg2Value;
|
|
break;
|
|
case TR_OP_SUB:
|
|
result = arg1Value - arg2Value;
|
|
break;
|
|
case TR_OP_MUL:
|
|
result = arg1Value * arg2Value;
|
|
break;
|
|
case TR_OP_DIV:
|
|
result = arg1Value / arg2Value;
|
|
break;
|
|
case TR_OP_LESS_EQUAL:
|
|
result = arg1Value <= arg2Value ? 1 : 0;
|
|
break;
|
|
case TR_OP_GREATER_EQUAL:
|
|
result = arg1Value >= arg2Value ? 1 : 0;
|
|
break;
|
|
case TR_OP_LESS:
|
|
result = arg1Value < arg2Value ? 1 : 0;
|
|
break;
|
|
case TR_OP_GREATER:
|
|
result = arg1Value > arg2Value ? 1 : 0;
|
|
break;
|
|
case TR_OP_EQUAL:
|
|
result = arg1 && arg2 && arg1->EqualTo( arg2 ) ? 1 : 0;
|
|
break;
|
|
case TR_OP_NOT_EQUAL:
|
|
result = arg1 && arg2 && arg1->NotEqualTo( arg2 ) ? 1 : 0;
|
|
break;
|
|
case TR_OP_BOOL_AND:
|
|
result = arg1Value != 0.0 && arg2Value != 0.0 ? 1 : 0;
|
|
break;
|
|
case TR_OP_BOOL_OR:
|
|
result = arg1Value != 0.0 || arg2Value != 0.0 ? 1 : 0;
|
|
break;
|
|
default:
|
|
result = 0.0;
|
|
break;
|
|
}
|
|
|
|
auto rp = ctx->AllocValue();
|
|
rp->Set( result );
|
|
ctx->Push( rp );
|
|
return;
|
|
}
|
|
else if( m_op & TR_OP_UNARY_MASK )
|
|
{
|
|
LIBEVAL::VALUE* arg1 = ctx->Pop();
|
|
double arg1Value = arg1 ? arg1->AsDouble() : 0.0;
|
|
double result;
|
|
|
|
switch( m_op )
|
|
{
|
|
case TR_OP_BOOL_NOT:
|
|
result = arg1Value != 0.0 ? 0 : 1;
|
|
break;
|
|
default:
|
|
result = 0.0;
|
|
break;
|
|
}
|
|
|
|
auto rp = ctx->AllocValue();
|
|
rp->Set( result );
|
|
ctx->Push( rp );
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
VALUE* UCODE::Run( CONTEXT* ctx )
|
|
{
|
|
static VALUE g_false( 0 );
|
|
|
|
try
|
|
{
|
|
for( UOP* op : m_ucode )
|
|
op->Exec( ctx );
|
|
}
|
|
catch(...)
|
|
{
|
|
// rules which fail outright should not be fired
|
|
return &g_false;
|
|
}
|
|
|
|
if( ctx->SP() == 1 )
|
|
{
|
|
return ctx->Pop();
|
|
}
|
|
else
|
|
{
|
|
// If stack is corrupted after execution it suggests a problem with the compiler, not
|
|
// the rule....
|
|
|
|
// do not use "assert"; it crashes outright on OSX
|
|
wxASSERT( ctx->SP() == 1 );
|
|
|
|
// non-well-formed rules should not be fired on a release build
|
|
return &g_false;
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace LIBEVAL
|