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#include "gwion_util.h" |
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#include "gwion_ast.h" |
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#include "gwion_env.h" |
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#include "vm.h" |
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#include "gwion.h" |
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static m_str const special_name[] = { ":nonnull", ":force" }; |
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#define SPECIAL_LEN strlen(special_name[0]) + strlen(special_name[1]) |
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static const ae_flag special_flag[] = { ae_flag_nonnull, ae_flag_force }; |
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typedef struct { |
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const Type type; |
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Symbol name; |
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ae_flag flag; |
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uint st_type; |
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} SpecialType; |
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ANN static Type specialtype_create(const Env env, const SpecialType *s) { |
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const Type t = type_copy(env->gwion->mp, s->type); |
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if(t->nspc) |
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ADD_REF(t->nspc) |
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t->name = s_name(s->name); |
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t->flag = s->type->flag | s->flag; |
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t->e->parent = s->type; |
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nspc_add_type_front(s->type->e->owner, s->name, t); |
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mk_class(env, t); |
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return t; |
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} |
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static inline int get_flag(const Type t, const ae_flag flag) { |
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return (t->flag & flag) == flag; |
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} |
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ANN static void specialtype_flag(SpecialType *s, m_str c, const uint i) { |
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const ae_flag flag = special_flag[i]; |
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✓✓✓✓
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if(i == s->st_type || get_flag(s->type, flag)) { |
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strcat(c, special_name[i]); |
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s->flag |= flag; |
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} |
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} |
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ANN static void specialtype_init(SymTable *st, SpecialType *s) { |
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const size_t sz = strlen(s->type->name); |
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char c[sz + SPECIAL_LEN + 1]; |
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strcpy(c, s->type->name); |
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m_str flagged = strchr(c, ':'); |
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if(flagged) |
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*flagged = '\0'; |
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specialtype_flag(s, c, 0); |
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specialtype_flag(s, c, 1); |
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s->name = insert_symbol(st, c); |
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} |
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ANN Type special_type(const Env env, const Type t, const uint st_type) { |
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SpecialType s = { .type=t, .st_type=st_type }; |
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specialtype_init(env->gwion->st, &s); |
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return nspc_lookup_type1(t->e->owner, s.name) ?: |
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specialtype_create(env, &s); |
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} |
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