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Diffstat (limited to 'o3d/compiler/technique/technique_parser.h')
-rw-r--r-- | o3d/compiler/technique/technique_parser.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/o3d/compiler/technique/technique_parser.h b/o3d/compiler/technique/technique_parser.h new file mode 100644 index 0000000..ef6e96e --- /dev/null +++ b/o3d/compiler/technique/technique_parser.h @@ -0,0 +1,130 @@ +/* + * Copyright 2009, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +// +// Parse an HLSL or Cg ".fx" file and break it into: +// a) source code for the shader +// b) structured information from a "technique{}" block, if one exists. +// +// Entry functions initialize the Parser and Lexer for the "Technique" +// grammar and execute the parsing process, returning the results as a +// string and a Technique object. +// +// Note that the two headers "TechniqueLexer.h" and "TechniqueParser.h" are +// automatically generated using the Antlr compiler-generator from the +// grammar file "Technique.g3pl" +// +// TODO: Note that this is a specialized grammar designed for this +// purpose alone, and it does no sanity checking on the HLSL source +// structure or identifiers itself. A more complete HLSL grammar and +// analyser for this task can be found in the directory +// "o3d/compiler/hlsl". + +#ifndef O3D_COMPILER_TECHNIQUE_TECHNIQUE_PARSER_H_ +#define O3D_COMPILER_TECHNIQUE_TECHNIQUE_PARSER_H_ + +#include <build/build_config.h> +#include <vector> +#include "core/cross/types.h" +#include "compiler/technique/technique_structures.h" +#include "compiler/technique/technique_error.h" + +#ifdef OS_WIN +// NOTE: disable compiler warning about C function returning a +// struct caused by the Antlr generated functions being declared extern"C" +// but being compiled and used as C++. +#pragma warning(disable: 4190) +#endif + +// As these headers are automatically generated, their full path has to be +// passed via the build script as each build target will generate the +// headers in a different location. +#include "TechniqueLexer.h" +#include "TechniqueParser.h" + +namespace o3d { + +// typedefs -------------------------------------------------------------------- + +typedef std::vector<TechniqueDeclaration> TechniqueDeclarationList; + + +// functions ------------------------------------------------------------------- + + +// Use the Technique grammar to parse a UTF8 text file from the filing system. +// Inputs: +// filename - a UTF8 filename to send to the filesystem. +// shader_string - pointer to a String object that will be cleared. +// sampler_list - pointer to a vector of SamplerState objects. +// technique_list - pointer to a vector of TechniqueDeclaration objects. +// error_string - pointer to a String object that will be cleared. +// Returns: +// shader_string - pointer to a String object containing the shader source. +// sampler_list - pointer to a vector of SamplerState objects, each filled +// in with fields parsed from the FX file. +// technique_list - pointer to a vector of TechniqueDeclaration objects, each +// filled with fields parsed from the FX file. +// error_string - pointer to a String object containing parse errors, +// if any. +bool ParseFxFile( + const String &filename, + String *shader_string, + SamplerStateList *sampler_list, + TechniqueDeclarationList *technique_list, + String *error_string); + + +// Use the Technique grammar to parse an in-memory string buffer. +// Inputs: +// fx_string - a zero-terminated UTF8 string of the .fx file source. +// shader_string - pointer to a String object that will be cleared. +// sampler_list - pointer to a vector of SamplerState objects. +// technique_list - pointer to a vector of TechniqueDeclaration objects. +// error_string - pointer to a String object that will be cleared. +// Returns: +// shader_string - pointer to a String object containing the shader source. +// sampler_list - pointer to a vector of SamplerState objects, each filled +// in with fields parsed from the FX file. +// technique_list - pointer to a vector of TechniqueDeclaration objects, each +// filled with fields parsed from the FX file. +// error_string - pointer to a String object containing parse errors, +// if any. +bool ParseFxString( + const String &fx_string, + String *shader_string, + SamplerStateList *sampler_list, + TechniqueDeclarationList *technique_list, + String *error_string); + +} // namespace o3d + +#endif // O3D_COMPILER_TECHNIQUE_TECHNIQUE_PARSER_H_ |