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[tinyexpr] Remove closures

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These are only available as a customization point. Since we don't use
that, it's dead code.
This commit is contained in:
Fabian Homborg 2018-02-15 15:02:25 +01:00
parent 4f56ce6d33
commit 4f39cc4d82
2 changed files with 10 additions and 40 deletions
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47
src/tinyexpr.c
View File

@ -33,7 +33,7 @@
typedef double (*te_fun2)(double, double);
enum {
TOK_NULL = TE_CLOSURE7+1, TOK_ERROR, TOK_END, TOK_SEP,
TOK_NULL = TE_FUNCTION0+16, TOK_ERROR, TOK_END, TOK_SEP,
TOK_OPEN, TOK_CLOSE, TOK_NUMBER, TOK_VARIABLE, TOK_INFIX
};
@ -58,14 +58,13 @@ typedef struct state {
#define IS_PURE(TYPE) (((TYPE) & TE_FLAG_PURE) != 0)
#define IS_FUNCTION(TYPE) (((TYPE) & TE_FUNCTION0) != 0)
#define IS_CLOSURE(TYPE) (((TYPE) & TE_CLOSURE0) != 0)
#define ARITY(TYPE) ( ((TYPE) & (TE_FUNCTION0 | TE_CLOSURE0)) ? ((TYPE) & 0x00000007) : 0 )
#define ARITY(TYPE) ( ((TYPE) & TE_FUNCTION0) ? ((TYPE) & 0x00000007) : 0 )
#define NEW_EXPR(type, ...) new_expr((type), (const te_expr*[]){__VA_ARGS__})
static te_expr *new_expr(const int type, const te_expr *parameters[]) {
const int arity = ARITY(type);
const int psize = sizeof(void*) * arity;
const int size = (sizeof(te_expr) - sizeof(void*)) + psize + (IS_CLOSURE(type) ? sizeof(void*) : 0);
const int size = (sizeof(te_expr) - sizeof(void*)) + psize;
te_expr *ret = malloc(size);
memset(ret, 0, size);
if (arity && parameters) {
@ -80,13 +79,13 @@ static te_expr *new_expr(const int type, const te_expr *parameters[]) {
void te_free_parameters(te_expr *n) {
if (!n) return;
switch (TYPE_MASK(n->type)) {
case TE_FUNCTION7: case TE_CLOSURE7: te_free(n->parameters[6]);
case TE_FUNCTION6: case TE_CLOSURE6: te_free(n->parameters[5]);
case TE_FUNCTION5: case TE_CLOSURE5: te_free(n->parameters[4]);
case TE_FUNCTION4: case TE_CLOSURE4: te_free(n->parameters[3]);
case TE_FUNCTION3: case TE_CLOSURE3: te_free(n->parameters[2]);
case TE_FUNCTION2: case TE_CLOSURE2: te_free(n->parameters[1]);
case TE_FUNCTION1: case TE_CLOSURE1: te_free(n->parameters[0]);
case TE_FUNCTION7: te_free(n->parameters[6]);
case TE_FUNCTION6: te_free(n->parameters[5]);
case TE_FUNCTION5: te_free(n->parameters[4]);
case TE_FUNCTION4: te_free(n->parameters[3]);
case TE_FUNCTION3: te_free(n->parameters[2]);
case TE_FUNCTION2: te_free(n->parameters[1]);
case TE_FUNCTION1: te_free(n->parameters[0]);
}
}
@ -234,10 +233,6 @@ void next_token(state *s) {
s->bound = var->address;
break;
case TE_CLOSURE0: case TE_CLOSURE1: case TE_CLOSURE2: case TE_CLOSURE3:
case TE_CLOSURE4: case TE_CLOSURE5: case TE_CLOSURE6: case TE_CLOSURE7:
s->context = var->context;
case TE_FUNCTION0: case TE_FUNCTION1: case TE_FUNCTION2: case TE_FUNCTION3:
case TE_FUNCTION4: case TE_FUNCTION5: case TE_FUNCTION6: case TE_FUNCTION7:
s->type = var->type;
@ -293,10 +288,8 @@ static te_expr *base(state *s) {
break;
case TE_FUNCTION0:
case TE_CLOSURE0:
ret = new_expr(s->type, 0);
ret->function = s->function;
if (IS_CLOSURE(s->type)) ret->parameters[0] = s->context;
next_token(s);
if (s->type == TOK_OPEN) {
next_token(s);
@ -311,16 +304,12 @@ static te_expr *base(state *s) {
break;
case TE_FUNCTION1:
case TE_CLOSURE1:
case TE_FUNCTION2: case TE_FUNCTION3: case TE_FUNCTION4:
case TE_FUNCTION5: case TE_FUNCTION6: case TE_FUNCTION7:
case TE_CLOSURE2: case TE_CLOSURE3: case TE_CLOSURE4:
case TE_CLOSURE5: case TE_CLOSURE6: case TE_CLOSURE7:
arity = ARITY(s->type);
ret = new_expr(s->type, 0);
ret->function = s->function;
if (IS_CLOSURE(s->type)) ret->parameters[arity] = s->context;
next_token(s);
if (s->type == TOK_OPEN) {
@ -464,20 +453,6 @@ double te_eval(const te_expr *n) {
default: return NAN;
}
case TE_CLOSURE0: case TE_CLOSURE1: case TE_CLOSURE2: case TE_CLOSURE3:
case TE_CLOSURE4: case TE_CLOSURE5: case TE_CLOSURE6: case TE_CLOSURE7:
switch(ARITY(n->type)) {
case 0: return TE_FUN(void*)(n->parameters[0]);
case 1: return TE_FUN(void*, double)(n->parameters[1], M(0));
case 2: return TE_FUN(void*, double, double)(n->parameters[2], M(0), M(1));
case 3: return TE_FUN(void*, double, double, double)(n->parameters[3], M(0), M(1), M(2));
case 4: return TE_FUN(void*, double, double, double, double)(n->parameters[4], M(0), M(1), M(2), M(3));
case 5: return TE_FUN(void*, double, double, double, double, double)(n->parameters[5], M(0), M(1), M(2), M(3), M(4));
case 6: return TE_FUN(void*, double, double, double, double, double, double)(n->parameters[6], M(0), M(1), M(2), M(3), M(4), M(5));
case 7: return TE_FUN(void*, double, double, double, double, double, double, double)(n->parameters[7], M(0), M(1), M(2), M(3), M(4), M(5), M(6));
default: return NAN;
}
default: return NAN;
}
@ -558,8 +533,6 @@ static void pn (const te_expr *n, int depth) {
case TE_FUNCTION0: case TE_FUNCTION1: case TE_FUNCTION2: case TE_FUNCTION3:
case TE_FUNCTION4: case TE_FUNCTION5: case TE_FUNCTION6: case TE_FUNCTION7:
case TE_CLOSURE0: case TE_CLOSURE1: case TE_CLOSURE2: case TE_CLOSURE3:
case TE_CLOSURE4: case TE_CLOSURE5: case TE_CLOSURE6: case TE_CLOSURE7:
arity = ARITY(n->type);
printf("f%d", arity);
for(i = 0; i < arity; i++) {

3
src/tinyexpr.h
View File

@ -65,9 +65,6 @@ enum {
TE_FUNCTION0 = 8, TE_FUNCTION1, TE_FUNCTION2, TE_FUNCTION3,
TE_FUNCTION4, TE_FUNCTION5, TE_FUNCTION6, TE_FUNCTION7,
TE_CLOSURE0 = 16, TE_CLOSURE1, TE_CLOSURE2, TE_CLOSURE3,
TE_CLOSURE4, TE_CLOSURE5, TE_CLOSURE6, TE_CLOSURE7,
TE_FLAG_PURE = 32
};