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joecc.y
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%locations
%token<unum> UNSIGNED_LITERAL;
%token<snum> INTEGER_LITERAL;
%token SHLTK "<<" SHRTK ">>" LE "<=" GE ">=" EQTK "==" NEQTK "!=" AND "&&" OR "||"
%token<dbl> FLOAT_LITERAL;
%token<str> SYMBOL TYPE_NAME
%token<dstr> STRING_LITERAL;
%token ARROWTK "->" INC "++" DEC "--" DIV_GETS "/=" MUL_GETS "*=" MOD_GETS "%="
%token ADD_GETS "+=" SUB_GETS "-=" SHL_GETS "<<=" SHR_GETS ">>=" AND_GETS "&="
%token XOR_GETS "^=" OR_GETS "|=" ELLIPSIS "..."
%token TYPEDEF "typedef" STATIC "static" EXTERN "extern" CHAR "char" VOID "void"
%token INT8 "int8" INT16 "int16" INT32 "int32" INT64 "int64" BYTE "byte"
%token DBYTE "dbyte" QBYTE "qbyte" OBYTE "obyte" SINGLE "single" DOUBLE "double"
%token CASETK "case" DEFAULTTK "default" IF "if" ELSE "else" SWITCHTK "switch"
%token WHILE "while" DO "do" FOR "for" GOTO "goto" CONTINUE "continue"
%token BREAK "break" RETURN "return" SIZEOF "sizeof" UNSIGNED "unsigned"
%token STRUCTTK "struct" ENUMTK "enum" UNIONTK "union" SIGNED "signed"
%token CONST "const" VOLATILE "volatile" RESTRICT "restrict" INLINE "inline" ASM "asm"
%token NORETURN "_Noreturn"
%right THEN "else"
/*probably could do this smarter with redesign*/
/*for production builds, parse.assert should probably not be set*/
%start program
%define parse.assert
%define parse.error detailed
%define api.pure full
%param {void *scanner}
%parse-param {void *filename}
%define api.location.type {LOCTYPE}
%code requires{
#include "compintern.h"
#include "dynarr.h"
#include "treeduce.h"
#define aget(param, index) ((INITIALIZER*) (param)->arr[(index)])
#define dget(param, index) ((DECLARATION*) (param)->arr[(index)])
#define YYPARSE_PARAM void* scanner
#define YYLEX_PARAM scanner
//TODO: union initializers, optional brace nesting?
//TODO: Consider designated initializers
}
%union {
long snum;
unsigned long unum;
int integert;
char* str;
DYNSTR* dstr;
double dbl;
TYPEBITS typevariant;
EXPRESSION* exprvariant;
IDTYPE* idvariant;
INITIALIZER* initvariant;
EOI* firforvariant;
STATEMENT* stmtvariant;
DYNARR* arrvariant;
DESIGNARR* designarrvariant;
USTRUCT* structvariant;
ENUM* enumvariant;
DECLARATION* declvariant;
struct declarator_part* declpartvariant;
FUNC* funcvariant;
void* vvar;
}
%{
int yylex(YYSTYPE* yst, LOCTYPE* ylt, void* yscanner);
int yyerror(LOCTYPE* ylt, void* scanner, char* filename, const char* s); //filename is ignored
void* yyget_extra(void* scanner);
%}
%initial-action {
@$.filename = filename;
}
%type<str> generic_symbol
%type<dstr> multistring
%type<integert> typemsign
%type<typevariant> types1 types2 types1o
%type<idvariant> typem typews1 type typemintkw inttypem namelesstype arbitrary_cast
%type<exprvariant> expression esc esa est eslo esla esbo esbx esba eseq escmp essh esas esm esca esp esu ee escoa
%type<stmtvariant> statement compound_statement
%type<arrvariant> statements_and_initializers soiorno struct_decls struct_decl cs_decls enums escl escoal abstract_ptr spefptr cs_inits cs_minutes initializer array_literal structbody enumbody nameless params clobberlist clobbers operands operandlist structescoal
%type<designarrvariant> arrescoal
%type<structvariant> struct fullstruct union fullunion
%type<enumvariant> enum fullenum
%type<declvariant> declarator declname param_decl sdecl
%type<declpartvariant> paramparen
%type<funcvariant> function
%type<firforvariant> dee
%type<vvar> program
%destructor {free($$);} <str>
%destructor {strdtor($$);} <dstr>
%destructor {freetype($$);} <idvariant>
%destructor {rfreexpr($$);} <exprvariant>
%destructor {rfreestate($$);} <stmtvariant>
//free arrvariant depending
%destructor {freesai($$);} statements_and_initializers
%destructor {if($$) freesai($$);} soiorno
%destructor {dadtorcfr($$, (void(*)(void*))freedecl);} struct_decls struct_decl
%destructor {dadtorcfr($$, (void(*)(void*))freenum);} enums
%destructor {dadtorcfr($$, (void(*)(void*))rfreexpr);} escl
%destructor {dadtorcfr($$, (void(*)(void*))rfreexpr);} escoal
%destructor {dadtorcfr($$, (void(*)(void*))freedeclpart);} abstract_ptr
%destructor {dadtorcfr($$, (void(*)(void*))freedeclpart);} spefptr
%destructor {dadtorcfr($$, (void(*)(void*))freeinit);} cs_inits
%destructor {dadtorcfr($$, (void(*)(void*))freedecl);} cs_minutes
%destructor {dadtorcfr($$, (void(*)(void*))freeinit);} initializer
//still confused by array_literal
%destructor {dadtorcfr($$, (void(*)(void*))freedecl);} structbody
%destructor {dadtorcfr($$, (void(*)(void*))fef);} enumbody
%destructor {dadtorcfr($$, (void(*)(void*))freetype);} nameless
%destructor {wipestruct($$);} <structvariant>
%destructor {freenum($$);} <enumvariant>
%destructor {
} <funcvariant> //oh boy
//free declvariant depending
//free declpart variant depending
//free eoi shouldn't be that bad
%%
program:
function {
$$ = NULL;
qinsert(ctx->funcs, $1->name, $1);
}
| initializer {
$$ = NULL;
if($1) {
for(int i = 0; i < $1->length; i++) {
INITIALIZER* a2 = daget($1, i);
if(!(a2->decl->type->tb & EXTERNNUM)) {
dapush(ctx->globals, a2);
} else {
dapush(ctx->externglobals, a2);
}
}
dadtor($1);
}
}
| program ';' {}
| program function {
$$ = $1;
char* cs = $2->name;
if(!qsearch(ctx->funcs, cs)) {
qinsert(ctx->funcs, cs, $2);
} else {
fprintf(stderr, "Error: redefinition of function %s in %s %d.%d-%d.%d\n", $2->name, locprint(@2));
}
}
| program initializer {
$$ = $1;
if($2) {
for(int i = 0; i < $2->length; i++) {
INITIALIZER* a2 = daget($2, i);
IDENTIFIERINFO* id = scopesearch(ctx, M_VARIABLE, a2->decl->varname);
if(id->type == a2->decl->type) {
//not redefinition
if(!(a2->decl->type->tb & EXTERNNUM)) {
dapush(ctx->globals, a2);
} else {
dapush(ctx->externglobals, a2);
}
} else {
if(id->type->tb & EXTERNNUM) {
id->type->tb &= ~EXTERNNUM;
dapush(ctx->globals, a2);
} else {
char errorstatus = 1;
if(id->type->pointerstack) {
struct declarator_part* dp = dapop(id->type->pointerstack);
if(dp->type == PARAMSSPEC || dp->type == NAMELESS_PARAMSSPEC) {
dapush(id->type->pointerstack, dp);
errorstatus = 0;
}
//TODO: confirm compatibility of prototypes
}
if(errorstatus)
fprintf(stderr, "Error: redefinition of non-extern global identifier in %s %d.%d-%d.%d\n", locprint(@2));
freeinit(a2);
}
}
}
dadtor($2);
}
};
initializer:
"typedef" type cs_minutes ';' {
DECLARATION* dc;
DYNARR* da = NULL;
if($2->tb & (STRUCTVAL | UNIONVAL)) {
if(!$2->structtype->fields) {
QHASHTABLE* ht = NULL;
if($2->tb & STRUCTVAL) {
ht = scopepeek(ctx)->forwardstructs;
} else if($2->tb & UNIONVAL) {
ht = scopepeek(ctx)->forwardunions;
} else {
fprintf(stderr, "Error: forward declaration of unknown type %s at %s %d.%d-%d.%d\n", $2->structtype->name, locprint(@2));
}
if(ht) {
da = qsearch(ht, $2->structtype->name);
if(da) dapop(da); //else opaque struct
}
}
}
SCOPE* topscope = dapeek(ctx->scopes);
for(int i = 0; i < $3->length; i++) {
dc = dget($3, i);
if(!qqueryval(topscope->typesdef, dc->varname)) {
dc->type->tb |= $2->tb;
if(ispointer($2)) {
DYNARR* nptr = ptrdaclone($2->pointerstack);
if(dc->type->pointerstack)
dc->type->pointerstack = damerge(nptr, dc->type->pointerstack);
else
dc->type->pointerstack = nptr;
} else {
if(!ispointer(dc->type)) {
dadtor(dc->type->pointerstack);
dc->type->pointerstack = NULL;
}
}
if($2->tb & (STRUCTVAL | UNIONVAL)) {
if(da) {
dc->type->structtype = ustructor(strdup($2->structtype->name), NULL, ctx);
dapush(da, &(dc->type->structtype));
} else {
dc->type->structtype = $2->structtype;
}
}
add2scope(ctx, dc->varname, M_TYPEDEF, dc->type);
} else {
assert(0);
}
free(dc->varname);
free(dc);
}
dadtor($3);
free($2);
$$ = NULL;
}
| type cs_inits ';' {
$$ = $2;
INITIALIZER* ac;
DYNARR* da = NULL;
if($1->tb & (STRUCTVAL | UNIONVAL)) {
if(!$1->structtype->fields) {
QHASHTABLE* ht;
if($1->tb & STRUCTVAL) {
ht = scopepeek(ctx)->forwardstructs;
} else {
ht = scopepeek(ctx)->forwardunions;
}
da = qsearch(ht, $1->structtype->name);
if(da) dapop(da); //else opaque struct
}
}
for(int i = 0; i < $$->length; i++) {
ac = aget($$, i);
ac->decl->type->tb |= $1->tb;
if(ispointer($1)) {
DYNARR* nptrst = ptrdaclone($1->pointerstack);
if(ac->decl->type->pointerstack)
ac->decl->type->pointerstack = damerge(nptrst, ac->decl->type->pointerstack);
else
ac->decl->type->pointerstack = nptrst;
}
if($1->tb & (STRUCTVAL | UNIONVAL)) {
if(da) {
dapush(da, &(ac->decl->type->structtype));
} else {
ac->decl->type->structtype = $1->structtype;
}
}
if(!ctx->func) {
//uhh... what?
}
if(ac->expr && ac->expr->type == ARRAY_LIT) {
DYNARR* pointy = ac->decl->type->pointerstack;
if(pointy && pointy->length && ((struct declarator_part*) dapeek(pointy))->type == ARRAYSPEC) {
process_array_lit(ac->decl->type, ac->expr);
ac->expr->rettype = fcid2(ac->decl->type);
} else if(!(pointy && pointy->length) && ac->decl->type->tb & (STRUCTVAL | UNIONVAL)) {
process_struct_lit(ac->decl->type, ac->expr);
ac->expr->rettype = fcid2(ac->decl->type);
} else {
//disgusting unnecessary brace syntax allowed
EXPRESSION* unnex = ac->expr;
assert(unnex->params->length == 1);
ac->expr = daget(unnex->params, 0);
dadtor(unnex->params);
free(unnex);
}
}
}
free($1);
}
| "struct" SYMBOL ';' {
$$ = NULL;
if(!scopequeryval(ctx, M_STRUCT, $2)) {
add2scope(ctx, $2, M_STRUCT, NULL);
qinsert(scopepeek(ctx)->forwardstructs, $2, dactor(16));
}
free($2);
}
| "union" SYMBOL ';' {
$$ = NULL;
if(!scopequeryval(ctx, M_UNION, $2)) {
add2scope(ctx, $2, M_UNION, NULL);
qinsert(scopepeek(ctx)->forwardunions, $2, dactor(16));
}
free($2);
}
| "enum" enumbody ';' {$$ = NULL;
for(int i = 0; i < $2->length; i++) {
ENUMFIELD* enf = daget($2, i);
free(enf->name);
free(enf);
}
dadtor($2);
}
| fullstruct ';' {(void) $1; $$ = NULL;}
| fullenum ';' {(void) $1; $$ = NULL;}
| fullunion ';' {(void) $1; $$ = NULL;};
cs_inits:
cs_inits ',' declarator '=' escoa {$$ = $1;
INITIALIZER* id = decl2scope($3, $5, ctx);
if(id) dapush($$, id); else fprintf(stderr, "Error: redefinition of identifier in %s %d.%d-%d.%d\n", locprint(@3)); }
| declarator '=' escoa {$$ = dactor(8);
INITIALIZER* id = decl2scope($1, $3, ctx);
if(id) dapushc($$, id); else fprintf(stderr, "Error: redefinition of identifier in %s %d.%d-%d.%d\n", locprint(@1)); }
| cs_inits ',' declarator {$$ = $1;
INITIALIZER* id = decl2scope($3, NULL, ctx);
if(id) dapush($$, id); else fprintf(stderr, "Error: redefinition of identifier in %s %d.%d-%d.%d\n", locprint(@1)); }
| declarator {$$ = dactor(8);
INITIALIZER* id = decl2scope($1, NULL, ctx);
if(id) dapushc($$, id); else fprintf(stderr, "Error: redefinition of identifier in %s %d.%d-%d.%d\n", locprint(@1)); };
escoa:
esc {$$ = $1;}
| array_literal {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_array_lit($1, index1, index2);
};
cs_minutes:
cs_minutes ',' declarator {$$ = $1; dapush($1, $3);}
| declarator {$$ = dactor(8); dapushc($$, $1);};
declarator:
abstract_ptr declname {$$ = $2; $2->type->pointerstack = damerge($1, $2->type->pointerstack);}
| declname {$$ = $1;};
paramparen:
'(' ')' {$$ = mkdeclpart(NAMELESS_PARAMSSPEC, NULL);}
| '(' nameless ')' {$$ = mkdeclpart(NAMELESS_PARAMSSPEC, $2);}
| '(' params ')' {$$ = mkdeclpart(PARAMSSPEC, $2);}
| '(' nameless ',' "..." ')' {
dapush($2, NULL);
$$ = mkdeclpart(NAMELESS_PARAMSSPEC, $2);
}
| '(' params ',' "..." ')' {
dapush($2, NULL);
$$ = mkdeclpart(PARAMSSPEC, $2);
};
declname:
SYMBOL {$$ = mkdeclaration($1);}
| SYMBOL paramparen {$$ = mkdeclaration($1); dapush($$->type->pointerstack, $2);}
| '(' SYMBOL ')' paramparen {$$ = mkdeclaration($2); dapush($$->type->pointerstack, $4);/*for function type*/}
| '(' abstract_ptr declname ')' paramparen {$$ = $3; $$->type->pointerstack = damerge($$->type->pointerstack, $2); dapush($$->type->pointerstack, $5);}
/*| '(' declname ')' {$$ = $2;}*/
| declname '[' ']' {$$ = $1; dapush($$->type->pointerstack,mkdeclpart(ARRAYSPEC, NULL));}
| declname '[' expression ']' {$$ = $1; dapush($$->type->pointerstack,mkdeclpartarr(ARRAYSPEC, $3));};
spefptr:
/* '(' abstract_ptr SYMBOL ')' {$$ = $2; free($3);}*/
'(' abstract_ptr ')' {$$ = $2;}
| '(' spefptr ')' {$$ = $2;}
| '[' ']' {$$ = dactor(2); dapush($$, mkdeclpart(ARRAYSPEC, NULL));}
| '[' expression ']' {$$ = dactor(2); dapush($$, mkdeclpartarr(ARRAYSPEC, $2));}
| spefptr '[' ']' {$$ = $1; dapush($$, mkdeclpart(ARRAYSPEC, NULL));}
| spefptr '[' expression ']' {$$ = $1; dapush($$, mkdeclpart(ARRAYSPEC, $3));}
| spefptr paramparen {
DYNARR* da = dactor(1 + $$->length);
dapushc(da, $2);
$$ = damerge(da, $1);
};
params:
param_decl {
$$ = dactor(8);
dapushc($$, $1);
}
| params ',' param_decl {
$$ = $1;
dapush($$, $3);
};
param_decl:
type declarator {
$2->type->tb |= $1->tb;
if(ispointer($1)) {
DYNARR* nptr = ptrdaclone($1->pointerstack);
if($2->type->pointerstack)
$2->type->pointerstack = damerge(nptr, $2->type->pointerstack);
else
$2->type->pointerstack = nptr;
}
if($1->tb & (STRUCTVAL | UNIONVAL)) {
if($1->structtype->fields) {
$2->type->structtype = $1->structtype;
} else {
QHASHTABLE* ht = NULL;
if($1->tb & STRUCTVAL) {
ht = scopepeek(ctx)->forwardstructs;
} else if($1->tb & UNIONVAL) {
ht = scopepeek(ctx)->forwardunions;
}
if(ht) {
DYNARR* da = qsearch(ht, $1->structtype->name);
if(da) {
dapop(da);
dapush(da, &($2->type->structtype));
} //else opaque struct
}
}
}
free($1);
$$ = $2;
};
nameless:
namelesstype {$$ = dactor(16); dapushc($$, $1);}
| nameless ',' namelesstype {$$ = $1; dapush($$, $3);}
| params ',' namelesstype {
$$ = dactor($1->length + 16);
for(int i = 0; i < $1->length; i++) {
DECLARATION* idt = daget($1, i);
dapush($$, idt->type);
free(idt->varname);
free(idt);
}
dapush($$, $3);
dadtor($1);
}
| nameless ',' param_decl {$$ = $1; dapush($$, $3->type); free($3->varname); free($3);};
namelesstype:
type {$$ = $1; if(ispointer($$)) $$->pointerstack = ptrdaclone($$->pointerstack); else $$->pointerstack = NULL;}
| type abstract_ptr {$$ = $1;
if(ispointer($$)) {
$$->pointerstack = damerge(ptrdaclone($1->pointerstack), $2);
} else {
$$->pointerstack = $2;
}}
| type spefptr {$$ = $1;
if(ispointer($$)) {
$$->pointerstack = damerge(ptrdaclone($1->pointerstack), $2);
} else {
$$->pointerstack = $2;
}}
| type abstract_ptr spefptr {$$ = $1;
if(ispointer($$)) {
$$->pointerstack = damerge(ptrdaclone($1->pointerstack), $2);
} else {
$$->pointerstack = $2;
}
$$->pointerstack = damerge($$->pointerstack, $3);
};
typemsign:
"signed" {$$ = 0;}
| "unsigned" {$$ = UNSIGNEDNUM;};
typemintkw:
"char" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 1;}
| "int8" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 1;}
| "int16" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 2;}
| "int32" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 4;}
| "int64" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8;}
| "int16" "int32" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 2;/*garbage feature only here for compatibility*/}
| "int64" "int32" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8;/*garbage feature only here for compatibility*/}
| "int64" "int64" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8;/*garbage feature only here for compatibility*/}
| "int64" "int64" "int32" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8;/*garbage feature only here for compatibility*/};
inttypem:
typemintkw {$$ = $1;}
| typemsign {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = $1 | 4;/*garbage feature only here for compatibility (unsigned/signed w/o int)*/}
| typemsign typemintkw {$$ = $2; $$->tb |= $1;}
| typemintkw typemsign {$$ = $1; $$->tb |= $2;/*garbage feature only here for compatibility (long unsigned)*/}
| typemintkw typemsign typemintkw {$$ = $1; $$->tb |= $2; free($3);/*even more garbage feature only here for compatibility (long unsigned int)*/};
typem:
inttypem {$$ = $1;}
| "byte" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 1 | UNSIGNEDNUM;}
| "dbyte" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 2 | UNSIGNEDNUM;}
| "qbyte" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 4 | UNSIGNEDNUM;}
| "obyte" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8 | UNSIGNEDNUM;}
| "void" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = VOIDNUM;}
| "single" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 4 | FLOATNUM;}
| "double" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 8 | FLOATNUM;}
| "int64" "double" {$$ = calloc(1, sizeof(IDTYPE)); $$->tb = 10;/*garbage feature only here for compatibility(?)*/}
| struct {
$$ = calloc(1, sizeof(IDTYPE));
$$->structtype = $1;
$$->tb = STRUCTVAL;
if($1->fields == NULL) {
DYNARR* da = (DYNARR*) qsearch(scopepeek(ctx)->forwardstructs, $1->name);
if(!da)
fprintf(stderr, "Error: struct %s undeclared in %s %d.%d-%d.%d\n", $1->name, locprint(@$));
else
dapush(da, &($$->structtype));
}}
| union {
$$ = calloc(1, sizeof(IDTYPE));
$$->uniontype = $1;
$$->tb = UNIONVAL;
if($1->fields == NULL) {
DYNARR* da = (DYNARR*) qsearch(scopepeek(ctx)->forwardunions, $1->name);
if(!da)
fprintf(stderr, "Error: union %s undeclared in %s %d.%d-%d.%d\n", $1->name, locprint(@$));
else
dapush(da, &($$->uniontype));
}}
| enum {
$$ = calloc(1, sizeof(IDTYPE));
$$->enumtype = $1;
$$->tb = ENUMVAL | 0x8;//for now they're all 8 bits
};
types1:
"const" {$$ = CONSTNUM;}
| "_Noreturn" {$$ = 0;/*does nothing*/}
| "volatile" {$$ = VOLATILENUM;}
| "restrict" {$$ = RESTRICTNUM;};
types2:
"extern" {$$ = EXTERNNUM;}
| "static" {$$ = STATICNUM;}
| "inline" {$$ = INLINED;};
typews1:
TYPE_NAME {
$$ = malloc(sizeof(IDTYPE));
IDTYPE* idt = scopesearch(ctx, M_TYPEDEF, $1);
if(idt) {
memcpy($$, idt, sizeof(IDTYPE));
} else {
fprintf(stderr, "Error: use of unknown type name %s in %s %d.%d-%d.%d\n", $1, locprint(@$));
}
free($1);
}
| typem {$$ = $1;}
| types1 typews1 {$$ = $2; $$->tb |= $1;}
| types2 typews1 {$$ = $2; $$->tb |= $1;} ;
type:
typews1 {$$ = $1;}
| typews1 types1 {$$ = $1; $$->tb |= $2;};
types1o:
types1 {$$ = $1;}
| types1o types1 {$$ = $1 | $2;};
abstract_ptr:
'*' {$$ = dactor(2); dapushc($$,mkdeclptr(sizeof(intptr_t)));}
| '*' abstract_ptr {$$ = $2; dapush($$, mkdeclptr(sizeof(intptr_t)));}
| '*' types1o {$$ = dactor(2); dapushc($$,mkdeclptr(sizeof(intptr_t) | $2));}
| '*' types1o abstract_ptr {$$ = $3; dapush($$, mkdeclptr(sizeof(intptr_t) | $2));};
arbitrary_cast:
'(' type ')' {if(ispointer($2)) $2->pointerstack = ptrdaclone($2->pointerstack); else $2->pointerstack = NULL; $$ = $2;}
| '(' type abstract_ptr ')' {
if(ispointer($2)) {
$2->pointerstack = damerge(ptrdaclone($2->pointerstack), $3);
} else {
$2->pointerstack = $3;
}
$$ = $2;}
| '(' type spefptr ')' {
if(ispointer($2)) {
$2->pointerstack = damerge(ptrdaclone($2->pointerstack), $3);
} else {
$2->pointerstack = $3;
}
$$ = $2;}
| '(' type abstract_ptr spefptr ')' {
if(ispointer($2)) {
$2->pointerstack = damerge(ptrdaclone($2->pointerstack), $3);
} else {
$2->pointerstack = $3;
}
$2->pointerstack = damerge($2->pointerstack, $4);
$$ = $2;};
expression:
expression ',' esc {$$ = ct_binary_expr(COMMA, $1, $3);}
| esc {$$ = $1;};
esc:
esc '=' esa {$$ = ct_binary_expr(ASSIGN, $1, $3);}
| esc "/=" esa {$$ = ct_binary_expr(DIVASSIGN, $1, $3);}
| esc "*=" esa {$$ = ct_binary_expr(MULTASSIGN, $1, $3);}
| esc "%=" esa {$$ = ct_binary_expr(MODASSIGN, $1, $3);}
| esc "+=" esa {$$ = ct_binary_expr(ADDASSIGN, $1, $3);}
| esc "-=" esa {$$ = ct_binary_expr(SUBASSIGN, $1, $3);}
| esc "<<=" esa {$$ = ct_binary_expr(SHLASSIGN, $1, $3);}
| esc ">>=" esa {$$ = ct_binary_expr(SHRASSIGN, $1, $3);}
| esc "&=" esa {$$ = ct_binary_expr(ANDASSIGN, $1, $3);}
| esc "^=" esa {$$ = ct_binary_expr(XORASSIGN, $1, $3);}
| esc "|=" esa {$$ = ct_binary_expr(ORASSIGN, $1, $3);}
| esa {$$ = $1;};
esa:
est '?' expression ':' esa {$$ = ct_ternary_expr($1, $3, $5);}
| est {$$ = $1;};
est:
est "||" eslo {$$ = ct_binary_expr(L_OR, $1, $3);}
| eslo {$$ = $1;};
eslo:
eslo "&&" esla {$$ = ct_binary_expr(L_AND, $1, $3);}
| esla {$$ = $1;};
esla:
esla '|' esbo {$$ = ct_binary_expr(B_OR, $1, $3);}
| esbo {$$ = $1;};
esbo:
esbo '^' esbx {$$ = ct_binary_expr(B_XOR, $1, $3);}
| esbx {$$ = $1;};
esbx:
esbx '&' esba {$$ = ct_binary_expr(B_AND, $1, $3);}
| esba {$$ = $1;};
esba:
esba "==" eseq {$$ = ct_binary_expr(EQ, $1, $3);}
| esba "!=" eseq {$$ = ct_binary_expr(NEQ, $1, $3);}
| eseq {$$ = $1;};
eseq:
eseq '<' escmp {$$ = ct_binary_expr(LT, $1, $3);}
| eseq '>' escmp {$$ = ct_binary_expr(GT, $1, $3);}
| eseq "<=" escmp {$$ = ct_binary_expr(LTE, $1, $3);}
| eseq ">=" escmp {$$ = ct_binary_expr(GTE, $1, $3);}
| escmp {$$ = $1;};
escmp:
escmp "<<" essh {$$ = ct_binary_expr(SHL, $1, $3);}
| escmp ">>" essh {$$ = ct_binary_expr(SHR, $1, $3);}
| essh;
essh:
essh '+' esas {$$ = ct_binary_expr(ADD, $1, $3);}
| essh '-' esas {$$ = ct_binary_expr(SUB, $1, $3);}
| esas {$$ = $1;};
esas:
esas '*' esm {$$ = ct_binary_expr(MULT, $1, $3);}
| esas '/' esm {$$ = ct_binary_expr(DIVI, $1, $3);}
| esas '%' esm {$$ = ct_binary_expr(MOD, $1, $3);}
| esm {$$ = $1;};
esm:
arbitrary_cast esm {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_cast_expr($1, $2, index);
}
| esca {$$ = $1;};
esca:
"++" esca {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(PREINC, $2, index, $2->locendind);
}
| "--" esca {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(PREDEC, $2, index, $2->locendind);
}
| '+' esm {$$ = $2;/*TODO: is this entirely correct? no promotion?*/}
| '-' esm {
switch($2->type) {
case INT: case UINT:
$$ = $2;
$2->intconst = -$2->intconst; //fix the locs?
break;
case FLOAT:
$$ = $2;
$2->floatconst = -$2->floatconst;
break;
default:
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(NEG, $2, ctx->halflocs->length - 1, $2->locendind);
break;
}}
| '!' esm {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(L_NOT, $2, index, $2->locendind);
}
| '~' esm {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(B_NOT, $2, index, $2->locendind);
}
| '*' esm {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(DEREF, $2, index, $2->locendind);
}
| '&' esm {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
$$ = ct_unary_expr(ADDR, $2, index, $2->locendind);
}
| "sizeof" '(' type abstract_ptr ')' {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@5));
$$ = ct_uintconst_expr(sizeof(uintptr_t), index1, index2);
free($3);
dadtorfr($4);
}
| "sizeof" '(' type ')' {
//exclude arrays from pointer check
if(ispointer($3)) {
free($3);
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@4));
$$ = ct_uintconst_expr(sizeof(uintptr_t), index1, index2);
} else {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@4));
$$ = ct_sztype($3, index1, index2);
}
}
| "sizeof" esca {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@2));
$$ = ct_unary_expr(SZOFEXPR, $2, index1, index2);
}
| esp {$$ = $1;};
esp:
esp "++" {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@2));
$$ = ct_unary_expr(POSTINC, $1, $1->locstartind, index);
}
| esp "--" {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@2));
$$ = ct_unary_expr(POSTDEC, $1, $1->locstartind, index);
}
| esp '(' ')' {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@3));
$$ = ct_fcall_expr($1, dactor(0), index);
}
| esp '(' escl ')' {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@4));
$$ = ct_fcall_expr($1, $3, index);
}
| esp '[' expression ']' {
int index = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@4));
$$ = ct_unary_expr(DEREF, ct_binary_expr(ADD, $1, $3), $1->locstartind, index);
}
| esp '.' SYMBOL {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@3));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@3));
$$ = ct_binary_expr(DOTOP, $1, ct_member_expr($3, index1, index2));
}
| esp "->" SYMBOL {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@3));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@3));
$$ = ct_binary_expr(ARROW, $1, ct_member_expr($3, index1, index2));
}
| esu {$$ = $1;};
esu:
'(' expression ')' {$$ = $2;}
| multistring {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_strconst_expr($1->strptr, index1, index2);
free($1);
}
| INTEGER_LITERAL {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_intconst_expr($1, index1, index2);
}
| UNSIGNED_LITERAL {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_uintconst_expr($1, index1, index2);
}
| FLOAT_LITERAL {
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_floatconst_expr($1, index1, index2);
}
| SYMBOL {
EXPRESSION* expr = scopesearch(ctx, M_ENUM_CONST, $1);
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
if(!expr) {
$$ = ct_ident_expr(ctx, $1, index1, index2);
} else {
free($1);
$$ = ct_intconst_expr(expr->intconst, index1, index2);
}
}
| arbitrary_cast array_literal {
DYNARR* pointy = $1->pointerstack;
int index1 = ctx->halflocs->length;
dapush(ctx->halflocs, halvestart(&@1));
int index2 = ctx->halflocs->length;
dapush(ctx->halflocs, halveend(&@1));
$$ = ct_array_lit($2, index1, index2);
if(pointy && pointy->length && ((struct declarator_part*) dapeek(pointy))->type == ARRAYSPEC) {
process_array_lit($1, $$);
$$->rettype = $1;
} else if(!(pointy && pointy->length) && $1->tb & (STRUCTVAL | UNIONVAL)) {
process_struct_lit($1, $$);
$$->rettype = $1;
} else {
//disgusting unnecessary brace syntax allowed
EXPRESSION* unnex = $$;
assert($$->params->length == 1);
$$ = daget($$->params, 0);
$$->rettype = $1;
dadtor(unnex->params);
free(unnex);
}
}/*compound literal*/;
escl:
esc {$$ = dactor(32); dapushc($$, $1);}
| escl ',' esc {$$ = $1; dapush($$, $3); };
arrescoal:
arrescoal ',' escoa {$$ = $1;
if($$->inits->maxlength < $$->curpt + 1)
$$->inits->arr = reallocarray($$->inits->arr, $$->inits->maxlength = ($1->curpt + 1) * 1.5, sizeof(void*));
if($$->inits->length < $1->curpt + 1) {
++$$->inits->length;
} else if($$->inits->arr[$$->curpt]) {
rfreexpr($$->inits->arr[$$->curpt]);
}
$$->inits->arr[$$->curpt] = $3;
++$$->curpt;
}
| '[' expression ']' '=' escoa {
$$ = malloc(sizeof(DESIGNARR));
foldconst($2);
assert($2->type == INT || $2->type == UINT);
$$->inits = dactor(32 > $2->intconst + 1 ? 32 : $2->intconst + 1);
for(int i = $$->inits->length; i < $2->intconst; i++) {
$$->inits->arr[i] = NULL;
}
$$->inits->arr[$2->intconst] = $5;
$$->inits->length = $2->intconst + 1;
$$->curpt = $$->inits->length;
free($2);
}
| arrescoal ',' '[' expression ']' '=' escoa {
$$ = $1;
foldconst($4);
assert($4->type == INT || $4->type == UINT);
if($$->inits->maxlength < $4->intconst + 1)
$$->inits->arr = reallocarray($$->inits->arr, $$->inits->maxlength = ($4->intconst + 1) * 1.5, sizeof(void*));
if($$->inits->length < $4->intconst + 1) {
for(int i = $$->inits->length; i < $4->intconst; i++) {
$$->inits->arr[i] = NULL;
}
$$->inits->length = $4->intconst + 1;
} else if($$->inits->arr[$4->intconst]) {
rfreexpr($$->inits->arr[$4->intconst]);
}
$$->inits->arr[$4->intconst] = $7;
$$->curpt = $4->intconst + 1;
free($4);
}
| escoal ',' '[' expression ']' '=' escoa {
$$ = malloc(sizeof(DESIGNARR));
$$->inits = $1;
$$->curpt = $1->length;
foldconst($4);
assert($4->type == INT || $4->type == UINT);
if($$->inits->maxlength < $4->intconst + 1)
$$->inits->arr = reallocarray($$->inits->arr, $$->inits->maxlength = ($4->intconst + 1) * 1.5, sizeof(void*));
if($$->inits->length < $4->intconst + 1) {
for(int i = $$->inits->length; i < $4->intconst; i++) {
$$->inits->arr[i] = NULL;
}
$$->inits->length = $4->intconst + 1;
} else if($$->inits->arr[$4->intconst]) {
rfreexpr($$->inits->arr[$4->intconst]);
}
$$->inits->arr[$4->intconst] = $7;
$$->curpt = $4->intconst + 1;
free($4);
};
structescoal:
'.' SYMBOL '=' escoa {
$$ = dactor(32);
free($2);
dapush($$, $4);
}
| structescoal ',' '.' SYMBOL '=' escoa {
$$ = $1;
free($4);
dapush($$, $6);
}
| escoal ',' '.' SYMBOL '=' escoa {
$$ = $1;
free($4);
dapush($$, $6);
}
| structescoal ',' escoa {
$$ = $1;
dapush($$, $3);
};
escoal:
escoa {$$ = dactor(32); dapushc($$, $1);}
| escoal ',' escoa {$$ = $1; dapush($$, $3);};
array_literal:
'{' escoal commaopt '}' {$$ = $2;}
| '{' arrescoal commaopt '}' {$$ = $2->inits; free($2);}
| '{' structescoal commaopt '}' {$$ = $2;};
multistring:
STRING_LITERAL {$$ = $1;}
| multistring STRING_LITERAL {
$$ = $1;
--$1->lenstr; //remove null terminator
dscat($1, $2->strptr, $2->lenstr);
strdtor($2);
}
function:
type declarator <funcvariant>{
DYNARR* parammemb;
struct declarator_part* dp = dapop($2->type->pointerstack);
$2->type->tb |= $1->tb;
if(ispointer($1)) {
$2->type->pointerstack = damerge(ptrdaclone($1->pointerstack), $2->type->pointerstack);
}
if($1->tb & (STRUCTVAL | UNIONVAL)) {
if($1->structtype->fields) {
$2->type->structtype = $1->structtype;
} else {
QHASHTABLE* ht = NULL;
if($1->tb & STRUCTVAL) {
ht = scopepeek(ctx)->forwardstructs;
} else if($1->tb & UNIONVAL) {
ht = scopepeek(ctx)->forwardunions;
}
if(ht) {
DYNARR* da = qsearch(ht, $1->structtype->name);
if(da) {
dapop(da);
dapush(da, &($2->type->structtype));
} //else opaque struct
}
}
}
if(!dp->params) {
parammemb = dactor(16);
} else if(dp->type == PARAMSSPEC) {
parammemb = dp->params;
} else if(dp->type == NAMELESS_PARAMSSPEC) {
IDTYPE* prm = dp->nameless_params->arr[0];
assert((dp->nameless_params->length == 1 && (!prm->pointerstack || prm->pointerstack->length == 0) && prm->tb == VOIDNUM) || !fprintf (stderr, "Function has unnamed parameters at %s %d.%d-%d.%d\n", locprint(@1)));
dadtorcfr(dp->nameless_params, (void(*)(void*)) freetype);
parammemb = dactor(16);
} else {
fprintf(stderr, "Function has malformed parameters at %s %d.%d-%d.%d\n", locprint(@1));
assert(0);
}
$$ = ct_function($2->varname, NULL, parammemb, $2->type);
IDENTIFIERINFO* fordecid;
if((fordecid = scopesearch(ctx, M_VARIABLE, $2->varname))) {
//TODO: ensure compliant overwriting?
//free(fordecid->name);
//freetype(fordecid->type);
free(fordecid);
}
IDENTIFIERINFO* id = malloc(sizeof(IDENTIFIERINFO));
id->index = -1;