91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
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/******************************************************************************/
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/* SRD PARSER AND PREPROCESSOR ************************************************/
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/******************************************************************************/
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#pragma once
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#include <lw/lib/SRDIO.hh>
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#include <lw/lib/SRDParserConfig.hh>
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namespace lw {
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// T_SRDParserData - Run-time data passed to the handlers when parsing
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struct T_SRDParserData
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{
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// Parser configuration
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T_SRDParserConfig const& config;
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// Error output
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T_SRDErrors & errors;
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// Input list (if any) for the current rule
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RPC_SRDList input;
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// Name of the current context
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T_String currentContext;
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// Current context's data
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RP_Variant currentData;
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// Target context when entering or exiting
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T_String targetContext;
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// Data for the target context; must be initialised at entrance
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RP_Variant targetData;
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explicit T_SRDParserData(
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T_SRDParserConfig const& parser ,
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T_SRDErrors & errors );
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};
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M_CLASS_POINTERS( SRDParserData );
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/*----------------------------------------------------------------------------*/
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// E_SRDFlushMode - How the parser flushes its command list
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enum class E_SRDFlushMode {
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MANUAL , // The parser never flushes the command list, it
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// must be done manually by calling flush()
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END , // Flush the command list after parsing has been
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// completed. This is the default.
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SENTENCE // Flush after each sentence (start() and end()
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// will also cause flushes)
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};
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// T_SRDParser - The parser's main class
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class T_SRDParser : public A_SRDReaderTarget , public A_PrivateImplementation
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{
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public:
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T_SRDParser( ) = delete;
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T_SRDParser( T_SRDParserConfig const& cfg );
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void start( T_SRDErrors & errors ) override;
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void push( T_SRDErrors & errors , T_SRDToken && token ) override;
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void end( T_SRDErrors & errors ) override;
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// Execute all currently queued commands
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void flush( );
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// Set/get the flush mode
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void flushMode( E_SRDFlushMode mode ) noexcept;
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E_SRDFlushMode flushMode( ) const noexcept;
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// Set/get flush token handling
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void handleFlushToken( bool handleIt ) noexcept;
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bool handleFlushToken( ) const noexcept;
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template< typename T >
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T const& getData( ) const;
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private:
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T_Variant const& getExecStackTop( ) const;
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};
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M_CLASS_POINTERS( SRDParser );
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template< typename T >
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inline T const& T_SRDParser::getData( ) const
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{
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return getExecStackTop( ).value< T >( );
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}
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} // namespace
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