shell写的编译器

头文件

debug_wait

function allFile() {
    awk '{print NR,$0}' $fileName
}

function main() {
    echo " "
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo "|+++++++++++++++++输入提醒+++++++++++++++|"
    echo "|+++++++++1、调试操作：debug   ++++++++++|"
    echo "|+++++++++(其他命令)、运行操作 ++++++++++|"
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo " "
    echo -e "  >--->请键入命令(序号和命令均可)：\c"
    read ORDER
    #有问题：怎么两个条件并列

    if [ "$ORDER" = "debug" ] || [ "$ORDER" = "1" ]
    then
        promptDialog
    else
        run
    fi
}
function Lookhelp() {
    echo " " 
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo "|+++++++++++++++调试步骤命令+++++++++++++|"
    echo "|+++++++ 1、设置断点：set        ++++++++|"
    echo "|+++++++ 2、单步调试：oneStep    ++++++++|"
    echo "|+++++++ 3、跳转至下一断点：next ++++++++|"
    echo "|+++++++ 4、查看变量：check      ++++++++|"
    echo "|+++++++ (其他命令)、结束调试    ++++++++|"
    echo "++++++++++++++++++++++++++++++++++++++++++"
}
function promptDialog() {
     
    #初始化
    is_OneStep=0

    if [ "$firstInter" = "0" ]
    then
        firstInter=1
        echo " 所调试程序显示如下，请根据行号设置断点："
        echo "------------------------------------------"
        allFile
        echo "------------------------------------------"
        echo " " 
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "|+++++++++++++++++友情提示+++++++++++++++|"
        echo "|++++++++如需帮助请键入：help    ++++++++|"
        echo "++++++++++++++++++++++++++++++++++++++++++"
    fi
    echo " "
    echo -e "  >--->请输入操作命令(序号和命令均可):\c"
    read COMMAND
    echo " "
    #帮助操作
    if [ "$COMMAND" = "help" ]
    then
        Lookhelp
        echo " "
        echo -e "  >--->请输入操作命令(序号和命令均可):\c"
        read COMMAND
        echo " "
    fi
    #设置断点操作
    if [ "$COMMAND" = "set" ] || [ "$COMMAND" = "1" ]
    then 
        set_point
    #单步调试操作
    elif [ "$COMMAND" = "oneStep" ] || [ "$COMMAND" = "2" ]
    then
        oneStep
    #跳转至下一断点操作
    elif [ "$COMMAND" = "next" ] || [ "$COMMAND" = "3" ]
    then 
        nextPoint
    #查看变量操作
    elif [ "$COMMAND" = "check" ] || [ "$COMMAND" = "4" ]
    then
        check
    #结束调试操作
    else
        run  
    fi
}

function check() {
    k=0
    while [ $k -eq 0 ]
    do
        echo -e "  >--->请输入变量(输入exit退出)：\c"
        read orderName
        if [ "$orderName" = "exit" ]
        then
            return
        else
            echo "      变量显示：$orderName : ${!orderName}"
        fi
    done
}

#跳转至下一断点操作
function nextPoint() {
    N=$point_count
}

#单步调试 事实上是不需要任何操作的
function oneStep() {
    is_OneStep=1
}

#调试该行
function debug_wait() {
    src=$1
    line=$2
    #返回0或1，$?表示返回的值，必须紧接下一行引用
    is_break $1 $2
    if [ $? -eq 1 ] || [ $is_OneStep -eq 1 ] 
    then
        echo " "
        echo -e "  第 $line 行内容为：\c"
        display_src $src $line
        echo "  ----------------------------------------"
        promptDialog $line
    fi      
}

#显示行
function display_src() {
    awk -v line=$2 '
        {
            if( FNR == line ){
                print $0;
            }
            else{
                next;
            }
        }
    ' $1
}

#判断是否设置了断点
function is_break() {
    c=0
    while [ $c -lt ${point_count} ]
    do
        if [ "$1" = "${point_src[$c]}" ] && [ "$2" = "${point_line[$c]}" ] 
        then
            return 1 
        fi
        c=`expr  $c + 1`
    done
    return 0
}

#运行
function run() {
    point_count=0
}

#设置断点
function set_point() {
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo "|++++++++++++设置断点方法介绍++++++++++++|"
    echo "|+++ 1、输入程序的行号，表示断点位置。+++|"
    echo "|+++ 2、输入 0 表示设置断点结束。     +++|"
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo " "
    N=1

    echo -e "  >--->请输入第 $N 个断点位置：\c"
    read NUM
    while [ $NUM -gt  0 ]
    do
        point_src[${point_count:-0}]=$fileName
        point_line[${point_count:-0}]=$NUM
        point_count=`expr ${point_count:-0} + 1`
        N=`expr $N + 1`
        echo -e "  >--->请输入第 $N 个断点位置：\c"
        read NUM
    done
    if [ "$N" -ne "0" ]
    then
        M=`expr $N - 1`
        echo "        (您一共设定了个 $M 断点)"
    else
        echo "        (您未设置断点)"
    fi

    promptDialog 
}

point_count=0
firstInter=0
is_OneStep=0
main

其他文件

#!/bin/bash

var=`date +%Y%m%d%H%M%S`.sh

#判断'('，')'是否匹配
function CheckYuan(){
#获得要编译的文件的行数
row=$(awk ' 
      END { print FNR }' $1)
#i用于标记遍历编译文件行数
i=1
#用于记录全局的存储剩余{d的个数
symbleCount=0
#用于统计前i行的剩余{的个数
count=0
#遍历编译文件的每一行
while [ $i -le $row ] && [ $symbleCount -ge 0 ] 
do 
    count=$( awk -v _count=$symbleCount -v _i=$i '
        BEGIN {FS =""; OFS =" " }
        {
            if ( FNR == _i ) {
                for (j=1;j<=NF;j++){ 
                    if ($j~/^[ \t]*\([ \t]*$/){
                        _count = _count +1;
                    }
                    else if ($j~/^[ \t]*\)[ \t]*$/){
                        if (_count >0){
                            _count = _count -1;
                        }
                        else 
                            if (_count<=0){
                                _count=-1*_i;
                            }
                    }
                }
            }
        }
        END {print _count }
  ' $1 )
#如果{的个数大于等于0
    if [ $count -ge 0 ] 
    then    
#如果全局变量统计的{值小于当前{的值,将当前行的{的值保存到数组line中
        while [ ${symbleCount} -lt ${count} ] 
        do 
            line[$symbleCount]=$i
            symbleCount=`expr $symbleCount + 1`
        
        done
#如果当前系统保存的统计{的值的全局变量大于当前的{的统计值，则将当前的统计值置未当前值
        if [ ${symbleCount} -gt ${count} ] 
        then 
            symbleCount=$count
        fi
#如果当前统计值未-1，则将row的值付给i
    elif [ $count -lt  0 ]
    then
        i=$row
        symbleCount=-1
        var=`expr $count * {-1}`
    echo " "
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "   》语法错误：第$var行的')'没有匹配的'('《     "
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo " "
    return `false`
    fi
#遍历下一行
    i=`expr $i + 1`
done

if [ $symbleCount -gt 0 ]
then
    echo " "
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "   》语法错误：第$line行的'('缺少配对的')'《"
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo " "
    return `false`
fi
if [ $symbleCount -eq 0 ]
then
    return `true`
fi

}

#查看‘{’，‘}’是否匹配
function CheckCode(){
#获得要编译的文件的行数
row=$(awk ' 
      END { print FNR }' $1)
#i用于标记遍历编译文件行数
i=1
#用于记录全局的存储剩余{d的个数
symbleCount=0
#用于统计前i行的剩余{的个数
count=0
#遍历编译文件的每一行
while [ $i -le $row ] && [ $symbleCount -ge 0 ] 
do 
    count=$( awk -v _count=$symbleCount -v _i=$i '
        BEGIN {FS =""; OFS =" " }
        {
            if ( FNR == _i ) {
                for (j=1;j<=NF;j++){ 
                    if ($j~/^[ \t]*{[ \t]*$/){
                        _count = _count +1;
                    }
                    else if ($j~/^[ \t]*}[ \t]*$/){
                        if (_count >0){
                            _count = _count -1;
                        }
                        else 
                            if (_count<=0){
                                _count=-1*_i;
                            }
                    }
                }
            }
        }
        END {print _count }
  ' $1 )
#如果{的个数大于等于0
    if [ $count -ge 0 ] 
    then    
#如果全局变量统计的{值小于当前{的值,将当前行的{的值保存到数组line中
        while [ ${symbleCount} -lt ${count} ] 
        do 
            line[$symbleCount]=$i
            symbleCount=`expr $symbleCount + 1`
        
        done
#如果当前系统保存的统计{的值的全局变量大于当前的{的统计值，则将当前的统计值置未当前值
        if [ ${symbleCount} -gt ${count} ] 
        then 
            symbleCount=$count
        fi
#如果当前统计值未-1，则将row的值付给i
    elif [ $count -lt  0 ]
    then
        i=$row
        symbleCount=-1
        var=`expr $count * {-1}`
    echo " "
    echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "   》语法错误：第$var行的'}'没有匹配的'{'《     "
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo " "
    return `false`
    fi
#遍历下一行
    i=`expr $i + 1`
done

if [ $symbleCount -gt 0 ]
then
    echo " "
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo "   》语法错误：第$line行的'{'缺少配对的'}'《"
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo " "
    return `false`
fi
if [ $symbleCount -eq 0 ]
then
    return `true`
fi

}


function drop_var() {
    awk -v var=$1 '
        NR==FNR{
            print
        }END { print "rm",var }
    ' h_xz.sh > h_rt.sh
}

#在源程序每行后加入debug_wait
function makets_debugs() {
    awk -v name=$1 '
        NR==FNR&&(NR==1){
            a[NR]=$0
        }NR>FNR{
            print;
            for (i in a){ 
                if (!/^[  \t]*#/ && NF && $0!="}" && !/^[ \t]*if/ && !/^[ \t]*elif/ && !/[ \t]*while/)  print a[i],name,FNR
            }
        }' h_file $1 > h_xz.sh
}

#在源程序中加入调试function
function makets_funs() {
    awk '
        NR==FNR&&(FNR>=3 && FNR<=199){
            a[FNR]=$0
        }NR>FNR{
            if (FNR==2) 
                for (i=3;i<=199;i++) print a[i];
            print

    }' h_file h_rt.sh > h_xzz.sh
}

#为调试文件中的变量fileName赋源文件的名称
function give_name() {
        awk -v name=$1 '
        NR==FNR{ 
            if (FNR==2) 
                print "fileName=" name;
            print 
    }' h_xzz.sh > $var
}

#判断用户输入的文件是否存在
function is_exist() {
    read name
    while  [ ! -e  $name ] || [ -z $name  ]
    do
        echo " "
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "|+++++++++++ 输入exit结束任务 +++++++++++|"
        echo "|+++ 文件名不存在或者为空，请重新输入 +++|"
        echo "++++++++++++++++++++++++++++++++++++++++++"
                echo " "
        read name
        if [ $name == "exit" ]
        then
            #echo "输入了exit"
            return `false`
        fi
    done
    return `true`
}

#主函数
function main() {
    echo " "
    echo "++++++++++++++++++++++++++++++++++++++++++"
    echo "|+++++++++ 请输入源文件的名称 +++++++++++|"
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo " "
    if is_exist 
    then
        if CheckYuan $name
        then    
            if CheckCode $name
            then
                makets_debugs $name
                drop_var $var
                makets_funs
                give_name $name
                rm h_xz.sh
                rm h_rt.sh
                rm h_xzz.sh
                chmod u+x $var
                    echo " "
            echo "++++++++++++++++++++++++++++++++++++++++++"
                echo "|+++++++++++++++ 开始调试 +++++++++++++++|"
                echo "++++++++++++++++++++++++++++++++++++++++++"
            echo " "
                ./$var
            fi
        fi
    else
        echo " "
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo "|+++++++++++++++ 结束任务 +++++++++++++++|"
        echo "++++++++++++++++++++++++++++++++++++++++++"
        echo " "
    fi
}

main