📄 csdn技术中心 一个小语言的词法分析程序原理及其实现(2).mht
字号:
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=B2=CE=CA=FD=A3=BA</SPAN><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt">fpin =
</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=A3=BA=CA=E4=C8=EB=CE=C4=BC=FE=D6=B8=D5=EB</SPAN><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-spacerun: yes"> </SPAN>fpout: =
</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=CA=E4=B3=F6=CE=C4=BC=FE=D6=B8=D5=EB</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT=20
=
size=3D3>****************************************************************=
****/<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3>void =
parse(FILE*=20
fpin,FILE* fpout)<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT=20
size=3D3>{<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt 21pt; mso-para-margin-left: =
2.0gd"><FONT=20
size=3D3><SPAN lang=3DEN-US style=3D"mso-bidi-font-size: =
10.5pt"><SPAN=20
style=3D"mso-tab-count: =
1"> =20
</SPAN>char arr[MAXBUF];//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=B6=C1=B3=F6=B5=C4=D7=EE=B3=A4=B5=C4=D7=D6=B7=FB=B4=AE=B2=BB=B3=AC=
=B9=FD</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt">MAXBUF,MAXBUF</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=B6=A8=D2=E5=CE=AA</SPAN><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: =
10.5pt">255</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=A3=AC=B9=BB=B3=A4=C1=CB=CE=D2=CF=EB</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt 21pt; mso-para-margin-left: =
2.0gd"><FONT=20
size=3D3><SPAN lang=3DEN-US style=3D"mso-bidi-font-size: =
10.5pt">int=20
i=3D0;//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=B7=D6=CE=F6=BA=AC=D7=D6=C4=B8=B5=C4=D7=D6=B7=FB=B4=AE=D3=C3</SPA=
N><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
1"> =20
</SPAN>int j=3D0;//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=B7=D6=CE=F6=B4=BF=CA=FD=D7=D6=B5=C4=D7=D6=B7=FB=B4=AE=D3=C3</SPA=
N><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-spacerun: yes"> =20
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><o:p><FONT=20
size=3D3> </FONT></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
1"> =20
</SPAN>while(1)<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
1"> =20
</SPAN>{<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
1"> =20
</SPAN>fscanf(fpin,"%c",&ch);//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=B4=D3=CA=E4=C8=EB=CE=C4=BC=FE=D6=D0=B6=C1=C8=EB=D2=BB=B8=F6=D7=D6=
=B7=FB</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><o:p><FONT=20
size=3D3> </FONT></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
2"> &nbs=
p; =20
</SPAN>if( ch=3D=3D' '|| ch =3D=3D'\t')//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=B9=FD=C2=CB=B5=F4=BF=D5=B8=F1=BA=CD</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt">tab<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN>;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
2"> &nbs=
p; =20
</SPAN>else if( ch=3D=3D'\n')//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=BB=D8=B3=B5=BB=BB=D0=D0=B7=FB=A3=AC=CE=AA=CF=C2=C3=E6=BD=F8=D0=D0=
=B4=ED=CE=F3=C5=D0=B6=CF</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN>lineno++;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
2"> &nbs=
p; =20
</SPAN>else if( IsDigit(ch))//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New Roman'">=B6=C1=C8=EB=B5=C4=CA=C7=CA=FD=D7=D6</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
10.5pt"><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
2"> &nbs=
p; =20
</SPAN>{<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN>while(IsDigit(ch))<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN>{<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
4"> &nbs=
p;  =
; =20
</SPAN><SPAN=20
style=3D"mso-spacerun: =
yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
4"> &nbs=
p;  =
; =20
</SPAN>arr[j] =3D ch;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
4"> &nbs=
p;  =
; =20
</SPAN>j++;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
4"> &nbs=
p;  =
; =20
=
</SPAN>fscanf(fpin,"%c",&ch);<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
4"> &nbs=
p;  =
; =20
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN>}<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><SPAN =
lang=3DEN-US=20
style=3D"mso-bidi-font-size: 10.5pt"><FONT size=3D3><SPAN=20
style=3D"mso-tab-count: =
3"> &nbs=
p; =20
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"><FONT =
size=3D3><SPAN=20
lang=3DEN-US style=3D"mso-bidi-font-size: 10.5pt"><SPAN=20
style=3D"mso-tab-count: =
2"> &nbs=
p; =20
</SPAN><SPAN style=3D"mso-spacerun: yes"> =20
</SPAN>fseek(fpin,-1L,SEEK_CUR);//</SPAN><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: =
10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: =
'Times New =
Roman'">=CE=C4=BC=FE=D6=B8=D5=EB=BA=F3=CD=CB=D2=BB=B8=F6=D7=D6=BD=DA</SPA=
N><SPAN=20
lang=3DEN-US=20
style=3D"mso-bidi-font-size: =
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