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vector parsing for assembly

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This commit is contained in:
Dale Weiler 2012-04-28 07:27:03 -04:00
parent e4a839df95
commit 7d66144c1b
2 changed files with 29 additions and 2 deletions
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29
asm.c
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@ -87,9 +87,36 @@ static inline bool asm_parse_type(const char *skip, size_t line, asm_state *stat
/* TODO: determine if constant, global, or local */
switch (*skip) {
/* VECTOR */ case 'V': {
float val1;
float val2;
float val3;
const char *find = skip + 7;
while (*find == ' ' || *find == '\t') find++;
printf("found VECTOR %s\n", find);
/*
* Parse all three elements of the vector. This will only
* pass the first try if we hit a constant, otherwise it's
* a global.
*/
#define PARSE_ELEMENT(X,Y,Z) \
if (isdigit(*X) || *X == '-'||*X == '+') { \
bool negated = (*X == '-'); \
if (negated || *X == '+') { X++; } \
Y = (negated)?-atof(X):atof(X); \
X = strchr(X, ','); \
Z \
}
PARSE_ELEMENT(find, val1, { if(find) { find+=3; }});
PARSE_ELEMENT(find, val2, { if(find) { find+=2; }});
PARSE_ELEMENT(find, val3, { if(find) { find+=1; }});
#undef PARSE_ELEMENT
printf("X:[0] = %f\n", val1);
printf("Y:[1] = %f\n", val2);
printf("Z:[2] = %f\n", val3);
break;
}
/* ENTITY */ case 'E': {

2
data/test.qs
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@ -83,6 +83,6 @@ FUNCTION: findfloat, $98
FUNCTION: checkextension, $99
; constants test
VECTOR: 1, 2, 3
VECTOR: -1, +2, 38865.444
FLOAT: 1
STRING: "hello world"