pike.git/src/pike_types.c:d5fdfa2b41f543fa12c0e62231dc07b95355e609

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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 /*\ ||| This file a part of Pike, and is copyright by Fredrik Hubinette ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ #include "global.h" RCSID("$Id: pike_types.c,v 1.20 1997/03/17 03:04:43 hubbe Exp $"); #include <ctype.h> #include "svalue.h" #include "pike_types.h" #include "stralloc.h" #include "stuff.h" #include "array.h" #include "program.h" #include "constants.h" #include "object.h" #include "multiset.h" #include "mapping.h" #include "pike_macros.h" #include "error.h" #include "las.h" #include "language.h" int max_correct_args; static void internal_parse_type(char **s); static int type_length(char *t); #define TWOT(X,Y) (((X) << 8)+(Y)) #define EXTRACT_TWOT(X,Y) TWOT(EXTRACT_UCHAR(X), EXTRACT_UCHAR(Y)) /* * basic types are represented by just their value in a string * basic type are string, int, float, object and program * arrays are coded like by the value T_ARRAY followed by the * data type, if the type is not known it is T_MIXED, ie: * T_ARRAY <data type> * mappings are followed by two arguments, the first is the type * for the indices, and the second is the type of the data, ie: * T_MAPPING <indice type> <data type> * multiset works similarly to arrays. * functions are _very_ special: * they are coded like this: * T_FUNCTION <arg type> <arg type> ... <arg type> T_MANY <arg type> <return type> * note that the type after T_MANY can be T_VOID * T_MIXED matches anything except T_VOID * T_UNKNOWN only matches T_MIXED and T_UNKNOWN */ struct pike_string *string_type_string; struct pike_string *int_type_string; struct pike_string *float_type_string; struct pike_string *function_type_string; struct pike_string *object_type_string; struct pike_string *program_type_string; struct pike_string *array_type_string; struct pike_string *multiset_type_string; struct pike_string *mapping_type_string; struct pike_string *mixed_type_string; struct pike_string *void_type_string; struct pike_string *any_type_string; #ifdef DEBUG static void CHECK_TYPE(struct pike_string *s) { if(debug_findstring(s) != s) fatal("Type string not shared.\n"); if(type_length(s->str) != s->len) fatal("Length of type is wrong.\n"); } #else #define CHECK_TYPE(X) #endif void init_types() { string_type_string=parse_type("string"); int_type_string=parse_type("int"); object_type_string=parse_type("object"); program_type_string=parse_type("program"); float_type_string=parse_type("float"); mixed_type_string=parse_type("mixed"); array_type_string=parse_type("array"); multiset_type_string=parse_type("multiset"); mapping_type_string=parse_type("mapping"); function_type_string=parse_type("function"); void_type_string=parse_type("void"); any_type_string=parse_type("void|mixed"); } static int type_length(char *t) { char *q=t; switch(EXTRACT_UCHAR(t++)) { default: fatal("error in type string.\n"); /*NOTREACHED*/ case T_FUNCTION: while(EXTRACT_UCHAR(t)!=T_MANY) t+=type_length(t); /* skip arguments */ t++; case T_MAPPING: case T_OR: case T_AND: t+=type_length(t); case T_ARRAY: case T_MULTISET: case T_NOT: t+=type_length(t); case T_INT: case T_FLOAT: case T_STRING: case T_PROGRAM: case T_MIXED: case T_VOID: case T_UNKNOWN: break; case T_OBJECT: t+=sizeof(INT32); break; } return t-q; } #define STACK_SIZE 100000 static unsigned char type_stack[STACK_SIZE]; static unsigned char *type_stackp=type_stack; static unsigned char *mark_stack[STACK_SIZE/4]; static unsigned char **mark_stackp=mark_stack; void push_type(unsigned char tmp) { *type_stackp=tmp; type_stackp++; if(type_stackp > type_stack + sizeof(type_stack)) yyerror("Type stack overflow."); } void type_stack_mark() { *mark_stackp=type_stackp; mark_stackp++; if(mark_stackp > mark_stack + NELEM(mark_stack)) yyerror("Type mark stack overflow."); } INT32 pop_stack_mark() { mark_stackp--; if(mark_stackp<mark_stack) fatal("Type mark stack underflow\n"); return type_stackp - *mark_stackp; } void pop_type_stack() { type_stackp--; if(type_stackp<type_stack) fatal("Type stack underflow\n"); } void type_stack_pop_to_mark() { type_stackp-=pop_stack_mark(); #ifdef DEBUG if(type_stackp<type_stack) fatal("Type stack underflow\n"); #endif } void reset_type_stack() { type_stack_pop_to_mark(); type_stack_mark(); } void type_stack_reverse() { INT32 a; a=pop_stack_mark(); reverse(type_stackp-a,a,1); } void push_type_int(unsigned INT32 i) { int e; for(e=sizeof(i)-1;e>=0;e--) push_type(((unsigned char *)&i)[e]); } void push_unfinished_type(char *s) { int e; e=type_length(s); for(e--;e>=0;e--) push_type(s[e]); } void push_finished_type(struct pike_string *type) { int e; CHECK_TYPE(type); for(e=type->len-1;e>=0;e--) push_type(type->str[e]); } struct pike_string *pop_unfinished_type() { int len,e; struct pike_string *s; len=pop_stack_mark(); s=begin_shared_string(len); type_stackp-=len; MEMCPY(s->str, type_stackp, len); reverse(s->str, len, 1); s=end_shared_string(s); CHECK_TYPE(s); return s; } struct pike_string *pop_type() { struct pike_string *s; s=pop_unfinished_type(); type_stack_mark(); return s; } static void internal_parse_typeA(char **_s) { char buf[80]; unsigned int len; unsigned char **s = (unsigned char **)_s; while(ISSPACE(**s)) ++*s; len=0; for(len=0;isidchar(EXTRACT_UCHAR(s[0]+len));len++) { if(len>=sizeof(buf)) error("Buffer overflow in parse_type\n"); buf[len] = s[0][len]; } buf[len]=0; *s += len; if(!strcmp(buf,"int")) push_type(T_INT); else if(!strcmp(buf,"float")) push_type(T_FLOAT); else if(!strcmp(buf,"object")) { push_type_int(0); push_type(T_OBJECT); } else if(!strcmp(buf,"program")) push_type(T_PROGRAM); else if(!strcmp(buf,"string")) push_type(T_STRING); else if(!strcmp(buf,"void")) push_type(T_VOID); else if(!strcmp(buf,"mixed")) push_type(T_MIXED); else if(!strcmp(buf,"unknown")) push_type(T_UNKNOWN); else if(!strcmp(buf,"function")) { while(ISSPACE(**s)) ++*s; if(**s == '(') { ++*s; while(ISSPACE(**s)) ++*s; type_stack_mark(); while(1) { if(**s == ':') { push_type(T_MANY); push_type(T_VOID); break; } type_stack_mark(); type_stack_mark(); type_stack_mark(); internal_parse_type(_s); type_stack_reverse(); if(**s==',') { ++*s; while(ISSPACE(**s)) ++*s; } else if(s[0][0]=='.' && s[0][1]=='.' && s[0][2]=='.') { type_stack_reverse(); push_type(T_MANY); type_stack_reverse(); *s+=3; while(ISSPACE(**s)) ++*s; if(**s != ':') error("Missing ':' after ... in function type.\n"); break; } pop_stack_mark(); pop_stack_mark(); } ++*s; type_stack_mark(); internal_parse_type(_s); /* return type */ type_stack_reverse(); if(**s != ')') error("Missing ')' in function type.\n"); ++*s; type_stack_reverse(); }else{ push_type(T_MIXED); push_type(T_MIXED); push_type(T_MANY); } push_type(T_FUNCTION); } else if(!strcmp(buf,"mapping")) { while(ISSPACE(**s)) ++*s; if(**s == '(') { type_stack_mark(); ++*s; type_stack_mark(); internal_parse_type(_s); type_stack_reverse(); if(**s != ':') error("Expecting ':'.\n"); ++*s; type_stack_mark(); internal_parse_type(_s); type_stack_reverse(); if(**s != ')') error("Expecting ')'.\n"); ++*s; type_stack_reverse(); }else{ push_type(T_MIXED); push_type(T_MIXED); } push_type(T_MAPPING); } else if(!strcmp(buf,"array")) { while(ISSPACE(**s)) ++*s; if(**s == '(') { ++*s; internal_parse_type(_s); if(**s != ')') error("Expecting ')'.\n"); ++*s; }else{ push_type(T_MIXED); } push_type(T_ARRAY); } else if(!strcmp(buf,"multiset")) { while(ISSPACE(**s)) ++*s; if(**s == '(') { ++*s; internal_parse_type(_s); if(**s != ')') error("Expecting ')'.\n"); ++*s; }else{ push_type(T_MIXED); } push_type(T_MULTISET); } else error("Couldn't parse type. (%s)\n",buf); while(ISSPACE(**s)) ++*s; } static void internal_parse_typeB(char **s) { while(ISSPACE(**s)) ++*s; switch(**s) { case '!': ++*s; internal_parse_typeB(s); push_type(T_NOT); break; case '(': ++*s; internal_parse_typeB(s); while(ISSPACE(**s)) ++*s; if(**s != ')') error("Expecting ')'.\n"); break; default: internal_parse_typeA(s); } } static void internal_parse_typeCC(char **s) { internal_parse_typeB(s); while(ISSPACE(**s)) ++*s; while(**s == '*') { ++*s; while(ISSPACE(**s)) ++*s; push_type(T_ARRAY); } } static void internal_parse_typeC(char **s) { type_stack_mark(); type_stack_mark(); internal_parse_typeCC(s); type_stack_reverse(); while(ISSPACE(**s)) ++*s; if(**s == '&') { ++*s; type_stack_mark(); internal_parse_typeC(s); type_stack_reverse(); type_stack_reverse(); push_type(T_AND); }else{ type_stack_reverse(); } } static void internal_parse_type(char **s) { internal_parse_typeC(s); while(ISSPACE(**s)) ++*s; while(**s == '|') { ++*s; internal_parse_typeC(s); push_type(T_OR); } } /* This function is used when adding simul efuns so that * the types for the functions can be easily stored in strings. * It takes a string on the exact same format as Pike and returns a type * struct. */ struct pike_string *parse_type(char *s) { type_stack_mark(); internal_parse_type(&s); if( *s ) fatal("Extra junk at end of type definition.\n"); return pop_unfinished_type(); } #ifdef DEBUG void stupid_describe_type(char *a,INT32 len) { INT32 e; for(e=0;e<len;e++) { if(e) printf(" "); switch(EXTRACT_UCHAR(a+e)) { case T_INT: printf("int"); break; case T_FLOAT: printf("float"); break; case T_STRING: printf("string"); break; case T_PROGRAM: printf("program"); break; case T_OBJECT: printf("object(%ld)",(long)EXTRACT_INT(a+e+1)); e+=sizeof(INT32); break; case T_FUNCTION: printf("function"); break; case T_ARRAY: printf("array"); break; case T_MAPPING: printf("mapping"); break; case T_MULTISET: printf("multiset"); break; case T_UNKNOWN: printf("unknown"); break; case T_MANY: printf("many"); break; case T_OR: printf("or"); break; case T_AND: printf("and"); break; case T_NOT: printf("not"); break; case T_VOID: printf("void"); break; case T_MIXED: printf("mixed"); break; default: printf("%d",EXTRACT_UCHAR(a+e)); break; } } printf("\n"); } void simple_describe_type(struct pike_string *s) { stupid_describe_type(s->str,s->len); } #endif char *low_describe_type(char *t) { switch(EXTRACT_UCHAR(t++)) { case T_VOID: my_strcat("void"); break; case T_MIXED: my_strcat("mixed"); break; case T_UNKNOWN: my_strcat("unknown"); break; case T_INT: my_strcat("int"); break; case T_FLOAT: my_strcat("float"); break; case T_PROGRAM: my_strcat("program"); break; case T_OBJECT: my_strcat("object"); /* Prog id */ break; case T_STRING: my_strcat("string"); break; case T_FUNCTION: { int s; my_strcat("function("); s=0; while(EXTRACT_UCHAR(t) != T_MANY) { if(s++) my_strcat(", "); t=low_describe_type(t); } t++; if(EXTRACT_UCHAR(t) == T_VOID) { t++; }else{ if(s++) my_strcat(", "); t=low_describe_type(t); my_strcat(" ..."); } my_strcat(" : "); t=low_describe_type(t); my_strcat(")"); break; } case T_ARRAY: if(EXTRACT_UCHAR(t)==T_MIXED) { my_strcat("array"); t++; }else{ t=low_describe_type(t); my_strcat("*"); } break; case T_MULTISET: my_strcat("multiset"); if(EXTRACT_UCHAR(t)!=T_MIXED) { my_strcat("("); t=low_describe_type(t); my_strcat(")"); }else{ t++; } break; case T_NOT: my_strcat("!"); t=low_describe_type(t); break; case T_OR: t=low_describe_type(t); my_strcat(" | "); t=low_describe_type(t); break; case T_AND: t=low_describe_type(t); my_strcat(" & "); t=low_describe_type(t); break; case T_MAPPING: my_strcat("mapping"); if(EXTRACT_UCHAR(t)==T_MIXED && EXTRACT_UCHAR(t+1)==T_MIXED) { t+=2; }else{ my_strcat("("); t=low_describe_type(t); my_strcat(":"); t=low_describe_type(t); my_strcat(")"); } break; } return t; } struct pike_string *describe_type(struct pike_string *type) { if(!type) return make_shared_string("mixed"); init_buf(); low_describe_type(type->str); return free_buf(); } static TYPE_T low_compile_type_to_runtime_type(char *t) { TYPE_T tmp; switch(EXTRACT_UCHAR(t)) { case T_OR: t++; tmp=low_compile_type_to_runtime_type(t); if(tmp == low_compile_type_to_runtime_type(t+type_length(t))) return tmp; case T_MANY: case T_UNKNOWN: case T_AND: case T_NOT: return T_MIXED; default: return EXTRACT_UCHAR(t); } } TYPE_T compile_type_to_runtime_type(struct pike_string *s) { return low_compile_type_to_runtime_type(s->str); } #define A_EXACT 1 #define B_EXACT 2 /* * match two type strings, return zero if they don't match, and return * the part of 'a' that _did_ match if it did. */ static char *low_match_types(char *a,char *b, int flags) { int correct_args; char *ret; if(a == b) return a; switch(EXTRACT_UCHAR(a)) { case T_AND: a++; ret=low_match_types(a,b,flags); if(!ret) return 0; a+=type_length(a); return low_match_types(a,b,flags); case T_OR: a++; ret=low_match_types(a,b,flags); if(ret) return ret; a+=type_length(a); return low_match_types(a,b,flags); case T_NOT: if(low_match_types(a+1,b,flags | B_EXACT)) return 0; return a; } switch(EXTRACT_UCHAR(b)) { case T_AND: b++; ret=low_match_types(a,b,flags); if(!ret) return 0; b+=type_length(b); return low_match_types(a,b,flags); case T_OR: b++; ret=low_match_types(a,b,flags); if(ret) return ret; b+=type_length(b); return low_match_types(a,b,flags); case T_NOT: if(low_match_types(a,b+1, flags | A_EXACT)) return 0; return a; } /* 'mixed' matches anything */ if(EXTRACT_UCHAR(a) == T_MIXED && !(flags & A_EXACT)) return a; if(EXTRACT_UCHAR(b) == T_MIXED && !(flags & B_EXACT)) return a; /* Special cases (tm) */ switch(EXTRACT_TWOT(a,b)) { case TWOT(T_PROGRAM, T_FUNCTION): case TWOT(T_FUNCTION, T_PROGRAM): return a; case TWOT(T_OBJECT, T_FUNCTION): { struct program *p; if(p=id_to_program(EXTRACT_INT(a+1))) { int i=p->lfuns[LFUN_CALL]; if(i == -1) return 0; return low_match_types(ID_FROM_INT(p, i)->type->str, b, flags); } return a; } case TWOT(T_FUNCTION, T_OBJECT): { struct program *p; if(p=id_to_program(EXTRACT_INT(b+1))) { int i=p->lfuns[LFUN_CALL]; if(i == -1) return 0; return low_match_types(a, ID_FROM_INT(p, i)->type->str, flags); } return a; } } if(EXTRACT_UCHAR(a) != EXTRACT_UCHAR(b)) return 0; ret=a; switch(EXTRACT_UCHAR(a)) { case T_FUNCTION: correct_args=0; a++; b++; while(EXTRACT_UCHAR(a)!=T_MANY || EXTRACT_UCHAR(b)!=T_MANY) { char *a_tmp,*b_tmp; if(EXTRACT_UCHAR(a)==T_MANY) { a_tmp=a+1; }else{ a_tmp=a; a+=type_length(a); } if(EXTRACT_UCHAR(b)==T_MANY) { b_tmp=b+1; }else{ b_tmp=b; b+=type_length(b); } if(!low_match_types(a_tmp, b_tmp, flags)) return 0; if(++correct_args > max_correct_args) max_correct_args=correct_args; } /* check the 'many' type */ a++; b++; if(EXTRACT_UCHAR(b)==T_VOID || EXTRACT_UCHAR(a)==T_VOID) { a+=type_length(a); b+=type_length(b); }else{ if(!low_match_types(a,b,flags)) return 0; } /* check the returntype */ if(!low_match_types(a,b,flags)) return 0; break; case T_MAPPING: if(!low_match_types(++a,++b,flags)) return 0; if(!low_match_types(a+type_length(a),b+type_length(b),flags)) return 0; break; case T_OBJECT: a++; b++; if(!EXTRACT_INT(a) || !EXTRACT_INT(b)) break; if(EXTRACT_INT(a) != EXTRACT_INT(b)) return 0; break; case T_MULTISET: case T_ARRAY: if(!low_match_types(++a,++b,flags)) return 0; case T_INT: case T_FLOAT: case T_STRING: case T_PROGRAM: case T_VOID: case T_MIXED: break; default: fatal("error in type string.\n"); } return ret; } /* * Return the return type from a function call. */ static int low_get_return_type(char *a,char *b) { int tmp; switch(EXTRACT_UCHAR(a)) { case T_OR: { struct pike_string *o1,*o2; a++; o1=o2=0; type_stack_mark(); if(low_get_return_type(a,b)) { o1=pop_unfinished_type(); type_stack_mark(); } if(low_get_return_type(a+type_length(a),b)) o2=pop_unfinished_type(); else pop_stack_mark(); if(o1 == o2) { if(!o1) { return 0; }else{ push_finished_type(o1); } } else if(o1 == mixed_type_string || o2 == mixed_type_string) { push_type(T_MIXED); } else { if(o1) push_finished_type(o1); if(o2) push_finished_type(o2); if(o1 && o2) push_type(T_OR); } if(o1) free_string(o1); if(o2) free_string(o2); return 1; } case T_AND: a++; type_stack_mark(); tmp=low_get_return_type(a,b); type_stack_pop_to_mark(); if(!tmp) return 0; return low_get_return_type(a+type_length(a),b); case T_ARRAY: a++; tmp=low_get_return_type(a,b); if(!tmp) return 0; push_type(T_ARRAY); return 1; } a=low_match_types(a,b,0); if(a) { switch(EXTRACT_UCHAR(a)) { case T_FUNCTION: a++; while(EXTRACT_UCHAR(a)!=T_MANY) a+=type_length(a); a++; a+=type_length(a); push_unfinished_type(a); return 1; case T_PROGRAM: push_type_int(0); push_type(T_OBJECT); return 1; default: push_type(T_MIXED); return 1; } } return 0; } int match_types(struct pike_string *a,struct pike_string *b) { CHECK_TYPE(a); CHECK_TYPE(b); return 0!=low_match_types(a->str, b->str,0); } /* FIXME, add the index */ static struct pike_string *low_index_type(char *t, node *n) { switch(EXTRACT_UCHAR(t++)) { case T_OBJECT: { struct program *p=id_to_program(EXTRACT_INT(t)); if(p) { if(n->token == F_ARROW) { if(p->lfuns[LFUN_ARROW] != -1 || p->lfuns[LFUN_ASSIGN_ARROW] != -1) { reference_shared_string(mixed_type_string); return mixed_type_string; } }else{ if(p->lfuns[LFUN_INDEX] != -1 || p->lfuns[LFUN_ASSIGN_INDEX] != -1) { reference_shared_string(mixed_type_string); return mixed_type_string; } } if(CDR(n)->token == F_CONSTANT && CDR(n)->u.sval.type==T_STRING) { INT32 i; i=find_shared_string_identifier(CDR(n)->u.sval.u.string, p); if(i==-1) { reference_shared_string(int_type_string); return int_type_string; }else{ reference_shared_string(ID_FROM_INT(p, i)->type); return ID_FROM_INT(p, i)->type; } } } } default: reference_shared_string(mixed_type_string); return mixed_type_string; case T_OR: { struct pike_string *a,*b; type_stack_mark(); a=low_index_type(t,n); t+=type_length(t); b=low_index_type(t,n); if(!b) return a; if(!a) return b; push_finished_type(b); push_finished_type(a); push_type(T_OR); return pop_unfinished_type(); } case T_AND: return low_index_type(t+type_length(t),n); case T_STRING: /* always int */ case T_MULTISET: /* always int */ reference_shared_string(int_type_string); return int_type_string; case T_MAPPING: t+=type_length(t); case T_ARRAY: return make_shared_binary_string(t, type_length(t)); } } struct pike_string *index_type(struct pike_string *type, node *n) { struct pike_string *t; t=low_index_type(type->str,n); if(!t) copy_shared_string(t,mixed_type_string); return t; } static int low_check_indexing(char *type, char *index_type, node *n) { switch(EXTRACT_UCHAR(type++)) { case T_OR: return low_check_indexing(type,index_type,n) || low_check_indexing(type+type_length(type),index_type,n); case T_AND: return low_check_indexing(type,index_type,n) && low_check_indexing(type+type_length(type),index_type,n); case T_NOT: return !low_check_indexing(type,index_type,n); case T_STRING: case T_ARRAY: return !!low_match_types(int_type_string->str, index_type,0); case T_OBJECT: { struct program *p=id_to_program(EXTRACT_INT(type)); if(p) { if(n->token == F_ARROW) { if(p->lfuns[LFUN_ARROW] != -1 || p->lfuns[LFUN_ASSIGN_ARROW] != -1) return 1; }else{ if(p->lfuns[LFUN_INDEX] != -1 || p->lfuns[LFUN_ASSIGN_INDEX] != -1) return 1; } return !!low_match_types(string_type_string->str, index_type,0); }else{ return 1; } } case T_MULTISET: case T_MAPPING: return !!low_match_types(type,index_type,0); case T_MIXED: return 1; default: return 0; } } int check_indexing(struct pike_string *type, struct pike_string *index_type, node *n) { CHECK_TYPE(type); CHECK_TYPE(index_type); return low_check_indexing(type->str, index_type->str, n); } /* Count the number of arguments for a funciton type. * return -1-n if the function can take number of arguments * >= n (varargs) */ int count_arguments(struct pike_string *s) { int num; char *q; CHECK_TYPE(s); q=s->str; if(EXTRACT_UCHAR(q) != T_FUNCTION) return MAX_LOCAL; q++; num=0; while(EXTRACT_UCHAR(q)!=T_MANY) { num++; q+=type_length(q); } q++; if(EXTRACT_UCHAR(q)!=T_VOID) return ~num; return num; } struct pike_string *check_call(struct pike_string *args, struct pike_string *type) { CHECK_TYPE(args); CHECK_TYPE(type); type_stack_mark(); max_correct_args=0; if(low_get_return_type(type->str,args->str)) { return pop_unfinished_type(); }else{ pop_stack_mark(); return 0; } } struct pike_string *get_type_of_svalue(struct svalue *s) { struct pike_string *ret; switch(s->type) { case T_FUNCTION: if(s->subtype == FUNCTION_BUILTIN) { ret=s->u.efun->type; }else{ struct program *p; p=s->u.object->prog; if(!p) { ret=int_type_string; }else{ ret=ID_FROM_INT(p,s->subtype)->type; } } reference_shared_string(ret); return ret; case T_ARRAY: type_stack_mark(); push_type(T_MIXED); push_type(T_ARRAY); return pop_unfinished_type(); case T_MULTISET: type_stack_mark(); push_type(T_MIXED); push_type(T_MULTISET); return pop_unfinished_type(); case T_MAPPING: type_stack_mark(); push_type(T_MIXED); push_type(T_MIXED); push_type(T_MAPPING); return pop_unfinished_type(); case T_OBJECT: type_stack_mark(); if(s->u.object->prog) { push_type_int(s->u.object->prog->id); }else{ push_type_int(0); } push_type(T_OBJECT); return pop_unfinished_type(); case T_INT: if(s->u.integer) { ret=int_type_string; }else{ ret=mixed_type_string; } reference_shared_string(ret); return ret; case T_PROGRAM: { char *a; int id=s->u.program->lfuns[LFUN_CREATE]; if(id>=0) { a=ID_FROM_INT(s->u.program, id)->type->str; }else{ a=function_type_string->str; } if(EXTRACT_UCHAR(a)==T_FUNCTION) { type_stack_mark(); push_type_int(s->u.program->id); push_type(T_OBJECT); type_stack_mark(); a++; while(EXTRACT_UCHAR(a)!=T_MANY) { type_stack_mark(); push_unfinished_type(a); type_stack_reverse(); a+=type_length(a); } a++; push_type(T_MANY); type_stack_mark(); push_unfinished_type(a); type_stack_reverse(); type_stack_reverse(); push_type(T_FUNCTION); return pop_unfinished_type(); } } default: type_stack_mark(); push_type(s->type); return pop_unfinished_type(); } } char *get_name_of_type(int t) { switch(t) { case T_ARRAY: return "array"; case T_FLOAT: return "float"; case T_FUNCTION: return "function"; case T_INT: return "int"; case T_LVALUE: return "lvalue"; case T_MAPPING: return "mapping"; case T_MULTISET: return "multiset"; case T_OBJECT: return "object"; case T_PROGRAM: return "program"; case T_STRING: return "string"; case T_VOID: return "void"; default: return "unknown"; } } void cleanup_pike_types() { free_string(string_type_string); free_string(int_type_string); free_string(float_type_string); free_string(function_type_string); free_string(object_type_string); free_string(program_type_string); free_string(array_type_string); free_string(multiset_type_string); free_string(mapping_type_string); free_string(mixed_type_string); free_string(void_type_string); free_string(any_type_string); }

pike.git/ src/ pike_types.c > d5fdfa2b41f543fa12c0e62231dc07b95355e609 [Annotate]