Add bison support

(cherry picked from commit a805660cba37d573bd07615cbdb36d3bba11ecc1)

3 files changed, 145 insertions, 0 deletions

diff --git a/BisonMacros.cmake b/BisonMacros.cmake
new file mode 100644
index 0000000..d6dcb19
--- /dev/null
+++ b/BisonMacros.cmake
@@ -0,0 +1,137 @@
+# /*
+#   For more information, please see: http://software.sci.utah.edu
+
+#   The MIT License
+
+#   Copyright (c) 2005-2006
+#   Scientific Computing and Imaging Institute, University of Utah
+
+#   License for the specific language governing rights and limitations under
+#   Permission is hereby granted, free of charge, to any person obtaining a
+#   copy of this software and associated documentation files (the "Software"),
+#   to deal in the Software without restriction, including without limitation
+#   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+#   and/or sell copies of the Software, and to permit persons to whom the
+#   Software is furnished to do so, subject to the following conditions:
+
+#   The above copyright notice and this permission notice shall be included
+#   in all copies or substantial portions of the Software.
+
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+#   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+#   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+#   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+#   DEALINGS IN THE SOFTWARE.
+# */
+
+SET(PARSERS_FOUND FOOBAR)
+
+# These variables need to be specified in order to get CMake not to
+# barf on the IF(EXISTS ${BISON_EXECUTABLE} ..) expression even though
+# the code shouldn't get called.  By setting them to BISON_EXECUTABLE
+
+SET(BISON_EXECUTABLE "BISON_EXECUTABLE-NOTFOUND" CACHE FILEPATH "bison executable")
+SET(FLEX_EXECUTABLE "FLEX_EXECUTABLE-NOTFOUND" CACHE FILEPATH "flex executable")
+# Mark these variables as advanced options
+MARK_AS_ADVANCED(FORCE BISON_EXECUTABLE)
+MARK_AS_ADVANCED(FORCE FLEX_EXECUTABLE)
+
+# You need at least version 2.4 for this to work.
+IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
+  MESSAGE("You need at least version 2.4 for generating flex and bison parsers.  Go get it from http://www.cmake.org/HTML/Download.html")
+  SET(PARSERS_FOUND 0)
+
+ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
+
+  FIND_PROGRAM(BISON_EXECUTABLE
+    NAMES bison
+    PATHS ${BISON_DIR} )
+
+  FIND_PROGRAM(FLEX_EXECUTABLE
+    NAMES flex
+    PATHS ${FLEX_DIR} )
+
+  IF(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
+    SET(PARSERS_FOUND 1)
+
+  ELSE(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
+    SET(PARSERS_FOUND 0)
+    # Print some error messages to the user
+    IF (NOT EXISTS ${BISON_EXECUTABLE})
+      MESSAGE("Couldn't find bison executable.  Please check value in BISON_EXECUTABLE in advanced settings.")
+    ENDIF (NOT EXISTS ${BISON_EXECUTABLE})
+    IF (NOT EXISTS ${FLEX_EXECUTABLE})
+      MESSAGE("Couldn't find flex executable.  Please check value in FLEX_EXECUTABLE in advanced settings.")
+    ENDIF (NOT EXISTS ${FLEX_EXECUTABLE})
+
+  ENDIF(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
+
+ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
+
+# These are helper functions for parsers.
+
+# parser is the parser file name like parser.y
+# lexer is like lexer.l
+
+# The names of the output files will be based on the input names.
+# BF_SOURCES will be parser.cc, parser.h and lexer.cc.
+
+MACRO(GENERATE_BISON_FLEX_SOURCES parser parser_args
+                                  lexer  lexer_args)
+  GET_FILENAME_COMPONENT(parser_base "${parser}" NAME_WE)
+
+  SET(BISON_TAB_C "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.tab.c")
+  SET(BISON_TAB_H "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.tab.h")
+  SET(BISON_CC    "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.cc")
+  SET(BISON_H     "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.h")
+
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${BISON_TAB_C} ${BISON_TAB_H}
+    COMMAND ${BISON_EXECUTABLE}
+    ARGS "${parser}" ${parser_args} "--defines"
+    DEPENDS "${parser}"
+    COMMENT "Generating ${BISON_TAB_C} ${BISON_TAB_H} from ${parser}"
+    )
+
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${BISON_CC}
+    COMMAND      ${CMAKE_COMMAND}
+    ARGS -E copy ${BISON_TAB_C} ${BISON_CC}
+    DEPENDS ${BISON_TAB_C}
+    COMMENT "Copying ${BISON_TAB_C} to ${BISON_CC}"
+    )
+
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${BISON_H}
+    COMMAND      ${CMAKE_COMMAND}
+    ARGS -E copy ${BISON_TAB_H} ${BISON_H}
+    DEPENDS ${BISON_TAB_H}
+    COMMENT "Copying ${BISON_TAB_H} to ${BISON_H}"
+    )
+
+  GET_FILENAME_COMPONENT(lexer_base "${lexer}" NAME_WE)
+  SET(FLEX_C "${CMAKE_CURRENT_BINARY_DIR}/lex.yy.c")
+  SET(FLEX_CC "${CMAKE_CURRENT_BINARY_DIR}/${lexer_base}.cc")
+  
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${FLEX_C}
+    COMMAND ${FLEX_EXECUTABLE}
+    ARGS "${lexer}" ${lexer_args}
+    DEPENDS "${lexer}" ${BISON_H}
+    COMMENT "Generating ${FLEX_C} from ${lexer}"
+    )
+
+  ADD_CUSTOM_COMMAND(
+    OUTPUT ${FLEX_CC}
+    COMMAND      ${CMAKE_COMMAND}
+    ARGS -E copy ${FLEX_C} ${FLEX_CC}
+    DEPENDS ${FLEX_C}
+    COMMENT "Copying ${FLEX_C} to ${FLEX_CC}"
+    )
+
+  SET(BF_SOURCES ${BISON_CC} ${BISON_H} ${FLEX_CC})
+  
+ENDMACRO(GENERATE_BISON_FLEX_SOURCES)
+
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 40f79e4..4420ffb 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -21,6 +21,7 @@ link_directories(
   ${TQT_LIBRARY_DIRS}
 )
 
+include( ${CMAKE_SOURCE_DIR}/BisonMacros.cmake )
 
 ##### other data ################################
 
@@ -29,6 +30,8 @@ install( FILES abakusui.rc DESTINATION ${DATA_INSTALL_DIR} )
 
 ##### abakus (executable) #######################
 
+GENERATE_BISON_FLEX_SOURCES("lexer.ll", "", "parser.yy", "-d")
+
 if( HAVE_MPFR )
   set( MPFR_SOURCES "hmath.cpp number.c" )
   set( MPFR_LIBRARIES "mpfr gmp" )
diff --git a/src/editor.cpp b/src/editor.cpp
index f4a4276..470198b 100644
--- a/src/editor.cpp
+++ b/src/editor.cpp
@@ -184,7 +184,12 @@ int EditorHighlighter::highlightParagraph ( const TQString & text, int )
       case Token::Identifier:
         {
           color = editor->highlightColor( Editor::Variable );
+#ifndef QT_NO_STL
 	  if( binary_search( fnames.constBegin(), fnames.constEnd(), text) ) {
+#else // QT_NO_STL
+	  #warning "Not using STL libraries; performance may be degraded..."
+	  if( fnames.find( text) != fnames.end()) {
+#endif // QT_NO_STL
 	    color = editor->highlightColor( Editor::FunctionName );
 	  }
         }