In the following code, I am parsing a C-code using clang APIs and then trying to
1)Add a HTML header and footer to the code, so it can be viewed in a browser
2)Getting the line number of THEN part of an IF statement and printing it.
I am having trouble in (2). I am not able to make sense of the output. For the following input (with line numbers added), I am getting (relevant) output as
Line number is 6
Line number is 6
Line number is 6
Line number is 6
Line number is 12
Line number is 12
Line number is 12
Line number is 12
I would expect it to be 4 and 8 respectively. Can someone explain where I am wrong?
My input is as follows (Please remove the line numbers or go to http://pastebin.com/hF5yMMAz)
%nl myinput.c
1 #include <stdio.h>
2 int func (int abc, int xyz) {
3 if (abc-1)
4 {
5 printf ("1\n");
6 }
7 if (abc-2)
8 {
9 printf ("2\n");
10 }
11
12 return 0;
13 }
My code is at the following location (only one file)
http://pastebin.com/txF9Bwa4
To compile the code, run these commands:
CLANG_INSTALL=/usr/installdir/
g++ -I$CLANG_INSTALL/include/ -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -g -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -fno-common -Woverloaded-virtual -Wcast-qual -fno-rtti -c -o rewritersample.o rewritersample.cpp
g++ -g -I$CLANG_INSTALL/include/ -o rewritersample rewritersample.o -lclangTooling -lclangFrontendTool -lclangFrontend -lclangDriver -lclangSerialization -lclangCodeGen -lclangParse -lclangSema -lclangStaticAnalyzerFrontend -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangAnalysis -lclangARCMigrate -lclangRewriteFrontend -lclangRewriteCore -lclangEdit -lclangAST -lclangLex -lclangBasic -lLLVMIRReader -lLLVMBitReader -lLLVMAsmParser -lLLVMHexagonCodeGen -lLLVMHexagonAsmPrinter -lLLVMHexagonDesc -lLLVMHexagonInfo -lLLVMNVPTXCodeGen -lLLVMNVPTXDesc -lLLVMNVPTXInfo -lLLVMNVPTXAsmPrinter -lLLVMMBlazeDisassembler -lLLVMMBlazeCodeGen -lLLVMMBlazeDesc -lLLVMMBlazeAsmPrinter -lLLVMMBlazeAsmParser -lLLVMMBlazeInfo -lLLVMCppBackendCodeGen -lLLVMCppBackendInfo -lLLVMMSP430CodeGen -lLLVMMSP430Desc -lLLVMMSP430Info -lLLVMMSP430AsmPrinter -lLLVMXCoreDisassembler -lLLVMXCoreCodeGen -lLLVMXCoreDesc -lLLVMXCoreInfo -lLLVMXCoreAsmPrinter -lLLVMMipsDisassembler -lLLVMMipsCodeGen -lLLVMMipsAsmParser -lLLVMMipsDesc -lLLVMMipsInfo -lLLVMMipsAsmPrinter -lLLVMARMDisassembler -lLLVMARMCodeGen -lLLVMARMAsmParser -lLLVMARMDesc -lLLVMARMInfo -lLLVMARMAsmPrinter -lLLVMAArch64Disassembler -lLLVMAArch64CodeGen -lLLVMAArch64AsmParser -lLLVMAArch64Desc -lLLVMAArch64Info -lLLVMAArch64AsmPrinter -lLLVMAArch64Utils -lLLVMSparcCodeGen -lLLVMSparcDesc -lLLVMSparcInfo -lLLVMTableGen -lLLVMDebugInfo -lLLVMOption -lLLVMX86Disassembler -lLLVMX86AsmParser -lLLVMX86CodeGen -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMX86Desc -lLLVMX86Info -lLLVMX86AsmPrinter -lLLVMX86Utils -lLLVMMCDisassembler -lLLVMMCParser -lLLVMInstrumentation -lLLVMInterpreter -lLLVMipo -lLLVMVectorize -lLLVMLinker -lLLVMBitWriter -lLLVMMCJIT -lLLVMJIT -lLLVMCodeGen -lLLVMObjCARCOpts -lLLVMScalarOpts -lLLVMInstCombine -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis -lLLVMRuntimeDyld -lLLVMExecutionEngine -lLLVMTarget -lLLVMMC -lLLVMObject -lLLVMCore -lLLVMSupport -L$CLANG_INSTALL/lib/ -lz -lpthread -lm -lLLVMCppBackendCodeGen -lLLVMCppBackendInfo -lLLVMTarget -lLLVMCore -lLLVMMC -lLLVMObject -lLLVMSupport -ldl
To run the code, command is
$./rewritersample ./myinput.c