Rewrote parser in tril

Signed-off-by: Yuehan-Lin <Yuehan.Lin@ibm.com>

fvtest/tril/tril/CMakeLists.txt

@@ -23,17 +23,11 @@ set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../../cmake/modules"
 	${CMAKE_MODULE_PATH})
 
 include(OmrUtility)
-include(FindYACC)
-include(FindLEX)
-
-find_package(YACC REQUIRED)
-find_package(LEX REQUIRED)
 
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-list(APPEND TRIL_FLEX_FLAGS)
 
 # There is no unistd.h on Windows, so if win_flex.exe is in use,
 # the --wincompat option must be added.
@@ -43,20 +37,11 @@ if(OMR_HOST_OS STREQUAL "win")
 	)
 endif()
 
-omr_stringify(TRIL_FLEX_OPTIONS ${TRIL_FLEX_FLAGS})
-YACC_TARGET(tril_parser tril.y ${CMAKE_CURRENT_BINARY_DIR}/tril.parser.c
-	DEFINES_FILE ${CMAKE_CURRENT_BINARY_DIR}/tril.parser.h)
-LEX_TARGET(tril_scanner tril.l ${CMAKE_CURRENT_BINARY_DIR}/tril.scanner.c
-	COMPILE_FLAGS ${TRIL_FLEX_OPTIONS}
-)
-ADD_LEX_YACC_DEPENDENCY(tril_scanner tril_parser)
-
 set(TRIL_BACKEND_LIB      testcompiler)
 
 add_library(tril STATIC
-	${YACC_tril_parser_OUTPUTS}
-	${LEX_tril_scanner_OUTPUTS}
 	ast.cpp
+	parser.cpp
 	ilgen.cpp
 	simple_compiler.cpp
 )