| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| /* |
| todo: |
| 1. dyn arrays |
| 2. multi |
| 3. block 0 |
| tothinkabout: |
| 2. argument in import |
| */ |
| |
| #include <u.h> |
| #include <libc.h> |
| #include <bio.h> |
| #include "compat.h" |
| |
| #ifndef EXTERN |
| #define EXTERN extern |
| #endif |
| enum |
| { |
| NHUNK = 50000, |
| BUFSIZ = 8192, |
| NSYMB = 500, |
| NHASH = 1024, |
| STRINGSZ = 200, |
| YYMAXDEPTH = 500, |
| MAXALIGN = 7, |
| UINF = 100, |
| HISTSZ = 10, |
| |
| PRIME1 = 3, |
| PRIME2 = 10007, |
| PRIME3 = 10009, |
| PRIME4 = 10037, |
| PRIME5 = 10039, |
| PRIME6 = 10061, |
| PRIME7 = 10067, |
| PRIME8 = 10079, |
| PRIME9 = 10091, |
| }; |
| |
| /* |
| * note this is the representation |
| * of the compilers string literals, |
| * it happens to also be the runtime |
| * representation, ignoring sizes and |
| * alignment, but that may change. |
| */ |
| typedef struct String String; |
| struct String |
| { |
| long len; |
| char s[3]; // variable |
| }; |
| |
| typedef struct Val Val; |
| struct Val |
| { |
| int ctype; |
| double dval; |
| vlong vval; |
| String* sval; |
| }; |
| |
| typedef struct Sym Sym; |
| typedef struct Node Node; |
| typedef struct Type Type; |
| |
| struct Type |
| { |
| uchar etype; |
| uchar chan; |
| uchar recur; // to detect loops |
| uchar trecur; // to detect loops |
| |
| // TFUNCT |
| uchar thistuple; |
| uchar outtuple; |
| uchar intuple; |
| uchar outnamed; |
| |
| Sym* sym; |
| long vargen; // unique name for OTYPE/ONAME |
| |
| // most nodes |
| Type* type; |
| vlong width; // offset in TFIELD, width in all others |
| |
| // TFIELD |
| Type* down; // also used in TMAP |
| |
| // TPTR |
| Type* nforw; |
| |
| // TFUNCT |
| Type* this; |
| Type* argout; |
| Type* argin; |
| Node* nname; |
| |
| // TARRAY |
| long bound; |
| }; |
| #define T ((Type*)0) |
| |
| struct Node |
| { |
| uchar op; |
| uchar ullman; // sethi/ullman number |
| uchar addable; // type of addressability - 0 is not addressable |
| uchar trecur; // to detect loops |
| uchar etype; // op for OASOP, etype for OTYPE, exclam for export |
| uchar class; // PPARAM, PAUTO, PEXTERN, PSTATIC |
| uchar method; // OCALLMETH name |
| uchar iota; // OLITERAL made from iota |
| |
| // most nodes |
| Node* left; |
| Node* right; |
| Type* type; |
| |
| // for-body |
| Node* ninit; |
| Node* ntest; |
| Node* nincr; |
| Node* nbody; |
| |
| // if-body |
| Node* nelse; |
| |
| // cases |
| Node* ncase; |
| |
| // func |
| Node* nname; |
| |
| // OLITERAL |
| Val val; |
| |
| Sym* osym; // import |
| Sym* fsym; // import |
| Sym* psym; // import |
| Sym* sym; // various |
| long vargen; // unique name for OTYPE/ONAME |
| long lineno; |
| vlong xoffset; |
| }; |
| #define N ((Node*)0) |
| |
| struct Sym |
| { |
| ushort tblock; |
| ushort vblock; |
| |
| uchar undef; // a diagnostic has been generated |
| uchar export; // marked as export |
| uchar exported; // has been exported |
| uchar sym; // huffman encoding in object file |
| |
| char* opackage; // original package name |
| char* package; // package name |
| char* name; // variable name |
| Node* oname; // ONAME node if a var |
| Type* otype; // TYPE node if a type |
| Node* oconst; // OLITERAL node if a const |
| Type* forwtype; // TPTR iff forward declared |
| void* label; // pointer to Prog* of label |
| vlong offset; // stack location if automatic |
| long lexical; |
| long vargen; // unique variable number |
| Sym* link; |
| }; |
| #define S ((Sym*)0) |
| |
| typedef struct Dcl Dcl; |
| struct Dcl |
| { |
| uchar op; |
| Sym* dsym; // for printing only |
| Node* dnode; // oname |
| Type* dtype; // otype |
| long lineno; |
| |
| Dcl* forw; |
| Dcl* back; // sentinel has pointer to last |
| }; |
| #define D ((Dcl*)0) |
| |
| typedef struct Iter Iter; |
| struct Iter |
| { |
| int done; |
| Type* tfunc; |
| Type* t; |
| Node** an; |
| Node* n; |
| }; |
| |
| typedef struct Hist Hist; |
| struct Hist |
| { |
| Hist* link; |
| char* name; |
| long line; |
| long offset; |
| }; |
| #define H ((Hist*)0) |
| |
| enum |
| { |
| OXXX, |
| |
| OTYPE, OCONST, OVAR, OEXPORT, OIMPORT, |
| |
| ONAME, ONONAME, |
| ODOT, ODOTPTR, ODOTMETH, ODOTINTER, |
| ODCLFUNC, ODCLFIELD, ODCLARG, |
| OLIST, OCMP, |
| OPTR, OARRAY, |
| ORETURN, OFOR, OIF, OSWITCH, OI2S, OS2I, OI2I, |
| OAS, OASOP, OCASE, OXCASE, OFALL, OXFALL, |
| OGOTO, OPROC, ONEW, OPANIC, OPRINT, OEMPTY, |
| |
| OOROR, |
| OANDAND, |
| OEQ, ONE, OLT, OLE, OGE, OGT, |
| OADD, OSUB, OOR, OXOR, |
| OMUL, ODIV, OMOD, OLSH, ORSH, OAND, |
| OLEN, |
| OFUNC, |
| OLABEL, |
| OBREAK, |
| OCONTINUE, |
| OADDR, |
| OIND, |
| OCALL, OCALLMETH, OCALLINTER, |
| OINDEX, OINDEXPTR, OSLICE, |
| ONOT, OCOM, OPLUS, OMINUS, OSEND, ORECV, |
| OLITERAL, OREGISTER, OINDREG, |
| OCONV, |
| OBAD, |
| |
| OEND, |
| }; |
| enum |
| { |
| Txxx, // 0 |
| |
| TINT8, TUINT8, // 1 |
| TINT16, TUINT16, |
| TINT32, TUINT32, |
| TINT64, TUINT64, |
| |
| TFLOAT32, // 9 |
| TFLOAT64, |
| TFLOAT80, |
| |
| TBOOL, // 12 |
| |
| TPTR32, TPTR64, // 13 |
| |
| TFUNC, |
| TARRAY, |
| TDARRAY, |
| TSTRUCT, |
| TCHAN, |
| TMAP, |
| TINTER, |
| TFORW, |
| TFIELD, |
| TANY, |
| TSTRING, |
| |
| NTYPE, // 26 |
| }; |
| enum |
| { |
| CTxxx, |
| |
| CTINT, |
| CTSINT, |
| CTUINT, |
| CTFLT, |
| |
| CTSTR, |
| CTBOOL, |
| CTNIL, |
| }; |
| |
| enum |
| { |
| /* indications for whatis() */ |
| Wnil = 0, |
| Wtnil, |
| |
| Wtfloat, |
| Wtint, |
| Wtbool, |
| Wtstr, |
| |
| Wlitfloat, |
| Wlitint, |
| Wlitbool, |
| Wlitstr, |
| Wlitnil, |
| |
| Wtunkn, |
| }; |
| |
| enum |
| { |
| /* types of channel */ |
| Cxxx, |
| Cboth, |
| Crecv, |
| Csend, |
| }; |
| |
| enum |
| { |
| Pxxx, |
| |
| PEXTERN, // declaration context |
| PAUTO, |
| PPARAM, |
| PSTATIC, |
| }; |
| |
| enum |
| { |
| Exxx, |
| Eyyy, |
| Etop, // evaluated at statement level |
| Elv, // evaluated in lvalue context |
| Erv, // evaluated in rvalue context |
| }; |
| |
| typedef struct Io Io; |
| struct Io |
| { |
| char* infile; |
| Biobuf* bin; |
| long ilineno; |
| int peekc; |
| char* cp; // used for content when bin==nil |
| }; |
| |
| EXTERN Io curio; |
| EXTERN Io pushedio; |
| EXTERN long lineno; |
| EXTERN char* pathname; |
| EXTERN Hist* hist; |
| EXTERN Hist* ehist; |
| |
| |
| EXTERN char* infile; |
| EXTERN char* outfile; |
| EXTERN char* package; |
| EXTERN Biobuf* bout; |
| EXTERN int nerrors; |
| EXTERN char namebuf[NSYMB]; |
| EXTERN char debug[256]; |
| EXTERN Sym* hash[NHASH]; |
| EXTERN Sym* dclstack; |
| EXTERN Sym* b0stack; |
| EXTERN Sym* pkgmyname; // my name for package |
| EXTERN Sym* pkgimportname; // package name from imported package |
| EXTERN int tptr; // either TPTR32 or TPTR64 |
| extern char* sysimport; |
| |
| EXTERN Type* types[NTYPE]; |
| EXTERN uchar isptr[NTYPE]; |
| EXTERN uchar isint[NTYPE]; |
| EXTERN uchar isfloat[NTYPE]; |
| EXTERN uchar issigned[NTYPE]; |
| EXTERN uchar issimple[NTYPE]; |
| EXTERN uchar okforeq[NTYPE]; |
| EXTERN uchar okforadd[NTYPE]; |
| EXTERN uchar okforand[NTYPE]; |
| EXTERN double minfloatval[NTYPE]; |
| EXTERN double maxfloatval[NTYPE]; |
| EXTERN vlong minintval[NTYPE]; |
| EXTERN vlong maxintval[NTYPE]; |
| |
| EXTERN Dcl* autodcl; |
| EXTERN Dcl* externdcl; |
| EXTERN Dcl* exportlist; |
| EXTERN int dclcontext; // PEXTERN/PAUTO |
| EXTERN int importflag; |
| EXTERN int inimportsys; |
| |
| EXTERN Node* booltrue; |
| EXTERN Node* boolfalse; |
| EXTERN ulong iota; |
| EXTERN Node* lastconst; |
| EXTERN long vargen; |
| EXTERN long exportgen; |
| EXTERN long maxarg; |
| EXTERN long stksize; |
| EXTERN ushort blockgen; // max block number |
| EXTERN ushort block; // current block number |
| |
| EXTERN Node* retnil; |
| EXTERN Node* fskel; |
| |
| EXTERN char* context; |
| EXTERN int thechar; |
| EXTERN char* thestring; |
| EXTERN char* hunk; |
| EXTERN long nhunk; |
| EXTERN long thunk; |
| |
| /* |
| * y.tab.c |
| */ |
| int yyparse(void); |
| |
| /* |
| * lex.c |
| */ |
| int mainlex(int, char*[]); |
| void importfile(Val*); |
| void cannedimports(void); |
| void unimportfile(); |
| long yylex(void); |
| void lexinit(void); |
| char* lexname(int); |
| long getr(void); |
| int getnsc(void); |
| int escchar(int, int*, vlong*); |
| int getc(void); |
| void ungetc(int); |
| void mkpackage(char*); |
| |
| /* |
| * mpatof.c |
| */ |
| int mpatof(char*, double*); |
| int mpatov(char*, vlong*); |
| |
| /* |
| * subr.c |
| */ |
| void myexit(int); |
| void* mal(long); |
| void* remal(void*, long, long); |
| void errorexit(void); |
| ulong stringhash(char*); |
| Sym* lookup(char*); |
| Sym* pkglookup(char*, char*); |
| void yyerror(char*, ...); |
| void warn(char*, ...); |
| void fatal(char*, ...); |
| void linehist(char*, long); |
| long setlineno(Node*); |
| Node* nod(int, Node*, Node*); |
| Node* list(Node*, Node*); |
| Type* typ(int); |
| Dcl* dcl(void); |
| Node* rev(Node*); |
| Node* unrev(Node*); |
| void dodump(Node*, int); |
| void dump(char*, Node*); |
| Type* aindex(Node*, Type*); |
| int isnil(Node*); |
| int isptrto(Type*, int); |
| int isinter(Type*); |
| int isbytearray(Type*); |
| int eqtype(Type*, Type*, int); |
| void argtype(Node*, Type*); |
| int eqargs(Type*, Type*); |
| ulong typehash(Type*, int); |
| void frame(int); |
| Node* literal(long); |
| Node* dobad(void); |
| Node* nodintconst(long); |
| void ullmancalc(Node*); |
| void badtype(int, Type*, Type*); |
| Type* ptrto(Type*); |
| Node* cleanidlist(Node*); |
| Node* syslook(char*, int); |
| Node* treecopy(Node*); |
| |
| Type** getthis(Type*); |
| Type** getoutarg(Type*); |
| Type** getinarg(Type*); |
| |
| Type* getthisx(Type*); |
| Type* getoutargx(Type*); |
| Type* getinargx(Type*); |
| |
| Node* listfirst(Iter*, Node**); |
| Node* listnext(Iter*); |
| Type* structfirst(Iter*, Type**); |
| Type* structnext(Iter*); |
| Type* funcfirst(Iter*, Type*); |
| Type* funcnext(Iter*); |
| |
| int Econv(Fmt*); |
| int Jconv(Fmt*); |
| int Lconv(Fmt*); |
| int Oconv(Fmt*); |
| int Sconv(Fmt*); |
| int Tconv(Fmt*); |
| int Nconv(Fmt*); |
| int Zconv(Fmt*); |
| |
| /* |
| * dcl.c |
| */ |
| void dodclvar(Node*, Type*); |
| void dodcltype(Type*, Type*); |
| void dodclconst(Node*, Node*); |
| void defaultlit(Node*); |
| int listcount(Node*); |
| Node* methodname(Node*, Type*); |
| Type* functype(Node*, Node*, Node*); |
| char* thistypenam(Node*); |
| void funcnam(Type*, char*); |
| void funchdr(Node*); |
| void funcargs(Type*); |
| void funcbody(Node*); |
| Type* dostruct(Node*, int); |
| Type** stotype(Node*, Type**); |
| Type* sortinter(Type*); |
| void markdcl(void); |
| void popdcl(void); |
| void poptodcl(void); |
| void markdclstack(void); |
| void testdclstack(void); |
| Sym* pushdcl(Sym*); |
| void addvar(Node*, Type*, int); |
| void addtyp(Type*, Type*, int); |
| Node* fakethis(void); |
| Node* newname(Sym*); |
| Node* oldname(Sym*); |
| Type* newtype(Sym*); |
| Type* oldtype(Sym*); |
| Type* forwdcl(Sym*); |
| |
| /* |
| * export.c |
| */ |
| void renamepkg(Node*); |
| void markexport(Node*); |
| void dumpe(Sym*); |
| void dumpexport(void); |
| void dumpexporttype(Sym*); |
| void dumpexportvar(Sym*); |
| void dumpexportconst(Sym*); |
| void doimportv1(Node*, Node*); |
| void doimportc1(Node*, Val*); |
| void doimportc2(Node*, Node*, Val*); |
| void doimport1(Node*, Node*, Node*); |
| void doimport2(Node*, Val*, Node*); |
| void doimport3(Node*, Node*); |
| void doimport4(Node*, Node*); |
| void doimport5(Node*, Val*); |
| void doimport6(Node*, Node*); |
| void doimport7(Node*, Node*); |
| |
| /* |
| * walk.c |
| */ |
| void walk(Node*); |
| void walktype(Node*, int); |
| void walkbool(Node*); |
| Type* walkswitch(Node*, Type*(*)(Node*, Type*)); |
| int casebody(Node*); |
| int whatis(Node*); |
| void walkdot(Node*, int); |
| Node* ascompatee(int, Node**, Node**); |
| Node* ascompatet(int, Node**, Type**, int); |
| Node* ascompatte(int, Type**, Node**, int); |
| int ascompat(Type*, Type*); |
| Node* prcompat(Node*); |
| Node* nodpanic(long); |
| Node* newcompat(Node*); |
| Node* stringop(Node*, int); |
| Node* mapop(Node*, int); |
| Node* procop(Node*); |
| Node* convas(Node*); |
| void arrayconv(Type*, Node*); |
| Node* colas(Node*, Node*); |
| Node* reorder1(Node*); |
| Node* reorder2(Node*); |
| Node* reorder3(Node*); |
| Node* reorder4(Node*); |
| |
| /* |
| * const.c |
| */ |
| void convlit(Node*, Type*); |
| void evconst(Node*); |
| int cmpslit(Node *l, Node *r); |
| |
| /* |
| * gen.c/gsubr.c/obj.c |
| */ |
| void belexinit(int); |
| void besetptr(void); |
| vlong convvtox(vlong, int); |
| void compile(Node*); |
| void proglist(void); |
| int optopop(int); |
| void dumpobj(void); |
| void dowidth(Type*); |
| void argspace(long); |
| Node* nodarg(Type*, int); |
