main.c

一个C语言的词法分析器

/*++
	module name: main.c

--*/
#include <stdio.h>
#include "word_analysis.h"

int main(int argc, char *argv[] )
{
	ENTRY entry;
	if( argc < 2 )
	{
		printf(" usage: 词法分析 filename\n" );
		return -1;
	}
	if( !file_to_buffer(argv[1] ) )
	{
		printf("bad file name...\n" );
		return -1;
	}
	do
	{
		if( is_end() )  /* 是否到达结尾 */
			break;
		entry = get_token( );
		if( entry.type == TYPE_UNDEF )
		{
			//printf("deal to ..........\n%s\n", p_char );

		}
		else if( entry.type == TYPE_CONST_NUM )
			printf("entry <type, *pointer> <%3d ,  %d >\n", entry.type, *(int*)entry.p_item );
		else if( entry.type == TYPE_CONST_REAL )
			printf("entry <type, *pointer> <%3d ,  %f >\n", entry.type, *(double*)entry.p_item );
		else if (entry.type == TYPE_CONST_CHAR )
			printf("entry <type, *pointer> <%3d ,  %c >\n", entry.type, *(char*)entry.p_item );
		else
			printf("entry <type, *pointer> <%3d ,  %s >\n", entry.type, entry.p_item );
		
	}while(TRUE );

	print_error();
	return 0;
}
/****************************end of file************************/