Compiler/medCode.c at master · Sara-HY/Compiler · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
#include "medCode.h"
#include "finCode.h"


/* Initialize the representation of intermediate code */
void initCode(){
	codeHead = (InterCodes *)malloc(sizeof(InterCodes));
	codeHead->prev = NULL;
	codeHead->next = NULL;

	codeTail = codeHead;
}


void destroyCode()
{
	InterCodes *pCode;
	while(codeHead){
		pCode = codeHead->next;
		free(codeHead);
		codeHead = pCode;
	}
}


void newLabel(char* name)
{
	char label[16];

	strcpy(name, "label");
	itoa(labelCount, label, 10);
	labelCount++;
	strcat(name, label);
}


void newTemp(char* name)
{
	char temp[16];

	strcpy(name, "t");
	itoa(tempCount, temp, 10);
	tempCount++;
	strcat(name, temp);
}


void addCode(char* code0, char* code1, char* code2, char* code3)
{
	InterCodes *pCode = (InterCodes *)malloc(sizeof(InterCodes));

	strcpy(pCode->args[0], code0);
	strcpy(pCode->args[1], code1);
	strcpy(pCode->args[2], code2);
	strcpy(pCode->args[3], code3);

	codeTail->next = pCode;
	pCode->prev = codeTail;
	pCode->next = NULL;
	codeTail = pCode;
}


void printCode(FILE *target_file1, FILE *target_file2)
{
	int type;
	InterCodes *pCode = codeHead->next;
	while(pCode){
		type = typeCode(pCode->args[0]);
		switch(type){
			case 0: case 1: case 2: case 3: case 4: case 5:
				fprintf(target_file1, "%s %s\n", pCode->args[0], pCode->args[3]);
				break;
			case 6: case 7:
				fprintf(target_file1, "%s %s :\n", pCode->args[0], pCode->args[3]);
				break;
			case 8:
				fprintf(target_file1, "DEC %s %s\n", pCode->args[3], pCode->args[1]);
				break;
			case 9: //:=
				fprintf(target_file1, "%s := %s\n", pCode->args[3], pCode->args[1]);
				break;
			case 10:
				fprintf(target_file1, "%s := CALL %s\n", pCode->args[3], pCode->args[1]);
				break;
			case 11:
				fprintf(target_file1, "%s := %s + %s\n", pCode->args[3], pCode->args[1], pCode->args[2]);
				break;
			case 12:
				fprintf(target_file1, "%s := %s - %s\n", pCode->args[3], pCode->args[1], pCode->args[2]);
				break;
			case 13:
				fprintf(target_file1, "%s := %s * %s\n", pCode->args[3], pCode->args[1], pCode->args[2]);
				break;
			case 14:
				fprintf(target_file1, "%s := %s / %s\n", pCode->args[3], pCode->args[1], pCode->args[2]);
				break;
			case 15:
				fprintf(target_file1, "IF %s < %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
			case 16:
				fprintf(target_file1, "IF %s > %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
			case 17:
				fprintf(target_file1, "IF %s == %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
			case 18:
				fprintf(target_file1, "IF %s != %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
			case 19:
				fprintf(target_file1, "IF %s LE %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
			case 20:
				fprintf(target_file1, "IF %s GE %s GOTO %s\n", pCode->args[1], pCode->args[2], pCode->args[3]);
				break;
		}
		pCode = pCode->next;
	}
	finCode(target_file2, codeHead);
}

int typeCode(char* code)
{
	unsigned i, j;

	for(i=0; i<21; i++){
		if(!strcmp(code, codeType[i]))
			return i;
	}
	return -1;
}