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eBookReaderSwitch/mupdf/thirdparty/mujs/jsdump.c

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#include "jsi.h"
#include "jsparse.h"
#include "jscompile.h"
#include "jsvalue.h"
#include "utf.h"
#include <assert.h>
static const char *astname[] = {
#include "astnames.h"
NULL
};
static const char *opname[] = {
#include "opnames.h"
NULL
};
static int minify = 0;
const char *jsP_aststring(enum js_AstType type)
{
if (type < nelem(astname)-1)
return astname[type];
return "<unknown>";
}
const char *jsC_opcodestring(enum js_OpCode opcode)
{
if (opcode < nelem(opname)-1)
return opname[opcode];
return "<unknown>";
}
static int prec(enum js_AstType type)
{
switch (type) {
case AST_IDENTIFIER:
case EXP_IDENTIFIER:
case EXP_NUMBER:
case EXP_STRING:
case EXP_REGEXP:
case EXP_UNDEF:
case EXP_NULL:
case EXP_TRUE:
case EXP_FALSE:
case EXP_THIS:
case EXP_ARRAY:
case EXP_OBJECT:
return 170;
case EXP_FUN:
case EXP_INDEX:
case EXP_MEMBER:
case EXP_CALL:
case EXP_NEW:
return 160;
case EXP_POSTINC:
case EXP_POSTDEC:
return 150;
case EXP_DELETE:
case EXP_VOID:
case EXP_TYPEOF:
case EXP_PREINC:
case EXP_PREDEC:
case EXP_POS:
case EXP_NEG:
case EXP_BITNOT:
case EXP_LOGNOT:
return 140;
case EXP_MOD:
case EXP_DIV:
case EXP_MUL:
return 130;
case EXP_SUB:
case EXP_ADD:
return 120;
case EXP_USHR:
case EXP_SHR:
case EXP_SHL:
return 110;
case EXP_IN:
case EXP_INSTANCEOF:
case EXP_GE:
case EXP_LE:
case EXP_GT:
case EXP_LT:
return 100;
case EXP_STRICTNE:
case EXP_STRICTEQ:
case EXP_NE:
case EXP_EQ:
return 90;
case EXP_BITAND: return 80;
case EXP_BITXOR: return 70;
case EXP_BITOR: return 60;
case EXP_LOGAND: return 50;
case EXP_LOGOR: return 40;
case EXP_COND:
return 30;
case EXP_ASS:
case EXP_ASS_MUL:
case EXP_ASS_DIV:
case EXP_ASS_MOD:
case EXP_ASS_ADD:
case EXP_ASS_SUB:
case EXP_ASS_SHL:
case EXP_ASS_SHR:
case EXP_ASS_USHR:
case EXP_ASS_BITAND:
case EXP_ASS_BITXOR:
case EXP_ASS_BITOR:
return 20;
#define COMMA 15
case EXP_COMMA:
return 10;
default:
return 0;
}
}
static void pc(int c)
{
putchar(c);
}
static void ps(const char *s)
{
fputs(s, stdout);
}
static void pn(int n)
{
printf("%d", n);
}
static void in(int d)
{
if (minify < 1)
while (d-- > 0)
putchar('\t');
}
static void nl(void)
{
if (minify < 2)
putchar('\n');
}
static void sp(void)
{
if (minify < 1)
putchar(' ');
}
static void comma(void)
{
putchar(',');
sp();
}
/* Pretty-printed Javascript syntax */
static void pstmlist(int d, js_Ast *list);
static void pexpi(int d, int i, js_Ast *exp);
static void pstm(int d, js_Ast *stm);
static void slist(int d, js_Ast *list);
static void sblock(int d, js_Ast *list);
static void pargs(int d, js_Ast *list)
{
while (list) {
assert(list->type == AST_LIST);
pexpi(d, COMMA, list->a);
list = list->b;
if (list)
comma();
}
}
static void parray(int d, js_Ast *list)
{
pc('[');
while (list) {
assert(list->type == AST_LIST);
pexpi(d, COMMA, list->a);
list = list->b;
if (list)
comma();
}
pc(']');
}
static void pobject(int d, js_Ast *list)
{
pc('{');
if (list) {
nl();
in(d+1);
}
while (list) {
js_Ast *kv = list->a;
assert(list->type == AST_LIST);
switch (kv->type) {
default: break;
case EXP_PROP_VAL:
pexpi(d+1, COMMA, kv->a);
pc(':'); sp();
pexpi(d+1, COMMA, kv->b);
break;
case EXP_PROP_GET:
ps("get ");
pexpi(d+1, COMMA, kv->a);
ps("()"); sp(); pc('{'); nl();
pstmlist(d+1, kv->c);
in(d+1); pc('}');
break;
case EXP_PROP_SET:
ps("set ");
pexpi(d+1, COMMA, kv->a);
pc('(');
pargs(d+1, kv->b);
pc(')'); sp(); pc('{'); nl();
pstmlist(d+1, kv->c);
in(d+1); pc('}');
break;
}
list = list->b;
if (list) {
pc(',');
nl();
in(d+1);
} else {
nl();
in(d);
}
}
pc('}');
}
static void pstr(const char *s)
{
static const char *HEX = "0123456789ABCDEF";
Rune c;
pc(minify ? '\'' : '"');
while (*s) {
s += chartorune(&c, s);
switch (c) {
case '\'': ps("\\'"); break;
case '"': ps("\\\""); break;
case '\\': ps("\\\\"); break;
case '\b': ps("\\b"); break;
case '\f': ps("\\f"); break;
case '\n': ps("\\n"); break;
case '\r': ps("\\r"); break;
case '\t': ps("\\t"); break;
default:
if (c < ' ' || c > 127) {
ps("\\u");
pc(HEX[(c>>12)&15]);
pc(HEX[(c>>8)&15]);
pc(HEX[(c>>4)&15]);
pc(HEX[c&15]);
} else {
pc(c); break;
}
}
}
pc(minify ? '\'' : '"');
}
static void pregexp(const char *prog, int flags)
{
pc('/');
ps(prog);
pc('/');
if (flags & JS_REGEXP_G) pc('g');
if (flags & JS_REGEXP_I) pc('i');
if (flags & JS_REGEXP_M) pc('m');
}
static void pbin(int d, int p, js_Ast *exp, const char *op)
{
pexpi(d, p, exp->a);
sp();
ps(op);
sp();
pexpi(d, p, exp->b);
}
static void puna(int d, int p, js_Ast *exp, const char *pre, const char *suf)
{
ps(pre);
pexpi(d, p, exp->a);
ps(suf);
}
static void pexpi(int d, int p, js_Ast *exp)
{
int tp, paren;
if (!exp) return;
tp = prec(exp->type);
paren = 0;
if (tp < p) {
pc('(');
paren = 1;
}
p = tp;
switch (exp->type) {
case AST_IDENTIFIER: ps(exp->string); break;
case EXP_IDENTIFIER: ps(exp->string); break;
case EXP_NUMBER: printf("%.9g", exp->number); break;
case EXP_STRING: pstr(exp->string); break;
case EXP_REGEXP: pregexp(exp->string, exp->number); break;
case EXP_UNDEF: break;
case EXP_NULL: ps("null"); break;
case EXP_TRUE: ps("true"); break;
case EXP_FALSE: ps("false"); break;
case EXP_THIS: ps("this"); break;
case EXP_OBJECT: pobject(d, exp->a); break;
case EXP_ARRAY: parray(d, exp->a); break;
case EXP_DELETE: puna(d, p, exp, "delete ", ""); break;
case EXP_VOID: puna(d, p, exp, "void ", ""); break;
case EXP_TYPEOF: puna(d, p, exp, "typeof ", ""); break;
case EXP_PREINC: puna(d, p, exp, "++", ""); break;
case EXP_PREDEC: puna(d, p, exp, "--", ""); break;
case EXP_POSTINC: puna(d, p, exp, "", "++"); break;
case EXP_POSTDEC: puna(d, p, exp, "", "--"); break;
case EXP_POS: puna(d, p, exp, "+", ""); break;
case EXP_NEG: puna(d, p, exp, "-", ""); break;
case EXP_BITNOT: puna(d, p, exp, "~", ""); break;
case EXP_LOGNOT: puna(d, p, exp, "!", ""); break;
case EXP_LOGOR: pbin(d, p, exp, "||"); break;
case EXP_LOGAND: pbin(d, p, exp, "&&"); break;
case EXP_BITOR: pbin(d, p, exp, "|"); break;
case EXP_BITXOR: pbin(d, p, exp, "^"); break;
case EXP_BITAND: pbin(d, p, exp, "&"); break;
case EXP_EQ: pbin(d, p, exp, "=="); break;
case EXP_NE: pbin(d, p, exp, "!="); break;
case EXP_STRICTEQ: pbin(d, p, exp, "==="); break;
case EXP_STRICTNE: pbin(d, p, exp, "!=="); break;
case EXP_LT: pbin(d, p, exp, "<"); break;
case EXP_GT: pbin(d, p, exp, ">"); break;
case EXP_LE: pbin(d, p, exp, "<="); break;
case EXP_GE: pbin(d, p, exp, ">="); break;
case EXP_IN: pbin(d, p, exp, "in"); break;
case EXP_SHL: pbin(d, p, exp, "<<"); break;
case EXP_SHR: pbin(d, p, exp, ">>"); break;
case EXP_USHR: pbin(d, p, exp, ">>>"); break;
case EXP_ADD: pbin(d, p, exp, "+"); break;
case EXP_SUB: pbin(d, p, exp, "-"); break;
case EXP_MUL: pbin(d, p, exp, "*"); break;
case EXP_DIV: pbin(d, p, exp, "/"); break;
case EXP_MOD: pbin(d, p, exp, "%"); break;
case EXP_ASS: pbin(d, p, exp, "="); break;
case EXP_ASS_MUL: pbin(d, p, exp, "*="); break;
case EXP_ASS_DIV: pbin(d, p, exp, "/="); break;
case EXP_ASS_MOD: pbin(d, p, exp, "%="); break;
case EXP_ASS_ADD: pbin(d, p, exp, "+="); break;
case EXP_ASS_SUB: pbin(d, p, exp, "-="); break;
case EXP_ASS_SHL: pbin(d, p, exp, "<<="); break;
case EXP_ASS_SHR: pbin(d, p, exp, ">>="); break;
case EXP_ASS_USHR: pbin(d, p, exp, ">>>="); break;
case EXP_ASS_BITAND: pbin(d, p, exp, "&="); break;
case EXP_ASS_BITXOR: pbin(d, p, exp, "^="); break;
case EXP_ASS_BITOR: pbin(d, p, exp, "|="); break;
case EXP_INSTANCEOF:
pexpi(d, p, exp->a);
ps(" instanceof ");
pexpi(d, p, exp->b);
break;
case EXP_COMMA:
pexpi(d, p, exp->a);
pc(','); sp();
pexpi(d, p, exp->b);
break;
case EXP_COND:
pexpi(d, p, exp->a);
sp(); pc('?'); sp();
pexpi(d, p, exp->b);
sp(); pc(':'); sp();
pexpi(d, p, exp->c);
break;
case EXP_INDEX:
pexpi(d, p, exp->a);
pc('[');
pexpi(d, 0, exp->b);
pc(']');
break;
case EXP_MEMBER:
pexpi(d, p, exp->a);
pc('.');
pexpi(d, 0, exp->b);
break;
case EXP_CALL:
pexpi(d, p, exp->a);
pc('(');
pargs(d, exp->b);
pc(')');
break;
case EXP_NEW:
ps("new ");
pexpi(d, p, exp->a);
pc('(');
pargs(d, exp->b);
pc(')');
break;
case EXP_FUN:
if (p == 0) pc('(');
ps("function ");
pexpi(d, 0, exp->a);
pc('(');
pargs(d, exp->b);
pc(')'); sp(); pc('{'); nl();
pstmlist(d, exp->c);
in(d); pc('}');
if (p == 0) pc(')');
break;
default:
ps("<UNKNOWN>");
break;
}
if (paren) pc(')');
}
static void pexp(int d, js_Ast *exp)
{
pexpi(d, 0, exp);
}
static void pvar(int d, js_Ast *var)
{
assert(var->type == EXP_VAR);
pexp(d, var->a);
if (var->b) {
sp(); pc('='); sp();
pexp(d, var->b);
}
}
static void pvarlist(int d, js_Ast *list)
{
while (list) {
assert(list->type == AST_LIST);
pvar(d, list->a);
list = list->b;
if (list)
comma();
}
}
static void pblock(int d, js_Ast *block)
{
assert(block->type == STM_BLOCK);
pc('{'); nl();
pstmlist(d, block->a);
in(d); pc('}');
}
static void pstmh(int d, js_Ast *stm)
{
if (stm->type == STM_BLOCK) {
sp();
pblock(d, stm);
} else {
nl();
pstm(d+1, stm);
}
}
static void pcaselist(int d, js_Ast *list)
{
while (list) {
js_Ast *stm = list->a;
if (stm->type == STM_CASE) {
in(d); ps("case "); pexp(d, stm->a); pc(':'); nl();
pstmlist(d, stm->b);
}
if (stm->type == STM_DEFAULT) {
in(d); ps("default:"); nl();
pstmlist(d, stm->a);
}
list = list->b;
}
}
static void pstm(int d, js_Ast *stm)
{
if (stm->type == STM_BLOCK) {
pblock(d, stm);
return;
}
in(d);
switch (stm->type) {
case AST_FUNDEC:
ps("function ");
pexp(d, stm->a);
pc('(');
pargs(d, stm->b);
pc(')'); sp(); pc('{'); nl();
pstmlist(d, stm->c);
in(d); pc('}');
break;
case STM_EMPTY:
pc(';');
break;
case STM_VAR:
ps("var ");
pvarlist(d, stm->a);
pc(';');
break;
case STM_IF:
ps("if"); sp(); pc('('); pexp(d, stm->a); pc(')');
pstmh(d, stm->b);
if (stm->c) {
nl(); in(d); ps("else");
pstmh(d, stm->c);
}
break;
case STM_DO:
ps("do");
pstmh(d, stm->a);
nl();
in(d); ps("while"); sp(); pc('('); pexp(d, stm->b); pc(')'); pc(';');
break;
case STM_WHILE:
ps("while"); sp(); pc('('); pexp(d, stm->a); pc(')');
pstmh(d, stm->b);
break;
case STM_FOR:
ps("for"); sp(); pc('(');
pexp(d, stm->a); pc(';'); sp();
pexp(d, stm->b); pc(';'); sp();
pexp(d, stm->c); pc(')');
pstmh(d, stm->d);
break;
case STM_FOR_VAR:
ps("for"); sp(); ps("(var ");
pvarlist(d, stm->a); pc(';'); sp();
pexp(d, stm->b); pc(';'); sp();
pexp(d, stm->c); pc(')');
pstmh(d, stm->d);
break;
case STM_FOR_IN:
ps("for"); sp(); pc('(');
pexp(d, stm->a); ps(" in ");
pexp(d, stm->b); pc(')');
pstmh(d, stm->c);
break;
case STM_FOR_IN_VAR:
ps("for"); sp(); ps("(var ");
pvarlist(d, stm->a); ps(" in ");
pexp(d, stm->b); pc(')');
pstmh(d, stm->c);
break;
case STM_CONTINUE:
ps("continue");
if (stm->a) {
pc(' '); pexp(d, stm->a);
}
pc(';');
break;
case STM_BREAK:
ps("break");
if (stm->a) {
pc(' '); pexp(d, stm->a);
}
pc(';');
break;
case STM_RETURN:
ps("return");
if (stm->a) {
pc(' '); pexp(d, stm->a);
}
pc(';');
break;
case STM_WITH:
ps("with"); sp(); pc('('); pexp(d, stm->a); pc(')');
pstmh(d, stm->b);
break;
case STM_SWITCH:
ps("switch"); sp(); pc('(');
pexp(d, stm->a);
pc(')'); sp(); pc('{'); nl();
pcaselist(d, stm->b);
in(d); pc('}');
break;
case STM_THROW:
ps("throw "); pexp(d, stm->a); pc(';');
break;
case STM_TRY:
ps("try");
if (minify && stm->a->type != STM_BLOCK)
pc(' ');
pstmh(d, stm->a);
if (stm->b && stm->c) {
nl(); in(d); ps("catch"); sp(); pc('('); pexp(d, stm->b); pc(')');
pstmh(d, stm->c);
}
if (stm->d) {
nl(); in(d); ps("finally");
pstmh(d, stm->d);
}
break;
case STM_LABEL:
pexp(d, stm->a); pc(':'); sp(); pstm(d, stm->b);
break;
case STM_DEBUGGER:
ps("debugger");
pc(';');
break;
default:
pexp(d, stm);
pc(';');
}
}
static void pstmlist(int d, js_Ast *list)
{
while (list) {
assert(list->type == AST_LIST);
pstm(d+1, list->a);
nl();
list = list->b;
}
}
void jsP_dumpsyntax(js_State *J, js_Ast *prog, int dominify)
{
minify = dominify;
if (prog->type == AST_LIST)
pstmlist(-1, prog);
else {
pstm(0, prog);
nl();
}
if (minify > 1)
putchar('\n');
}
/* S-expression list representation */
static void snode(int d, js_Ast *node)
{
void (*afun)(int,js_Ast*) = snode;
void (*bfun)(int,js_Ast*) = snode;
void (*cfun)(int,js_Ast*) = snode;
void (*dfun)(int,js_Ast*) = snode;
if (!node) {
return;
}
if (node->type == AST_LIST) {
slist(d, node);
return;
}
pc('(');
ps(astname[node->type]);
pc(':');
pn(node->line);
switch (node->type) {
default: break;
case AST_IDENTIFIER: pc(' '); ps(node->string); break;
case EXP_IDENTIFIER: pc(' '); ps(node->string); break;
case EXP_STRING: pc(' '); pstr(node->string); break;
case EXP_REGEXP: pc(' '); pregexp(node->string, node->number); break;
case EXP_NUMBER: printf(" %.9g", node->number); break;
case STM_BLOCK: afun = sblock; break;
case AST_FUNDEC: case EXP_FUN: cfun = sblock; break;
case EXP_PROP_GET: cfun = sblock; break;
case EXP_PROP_SET: cfun = sblock; break;
case STM_SWITCH: bfun = sblock; break;
case STM_CASE: bfun = sblock; break;
case STM_DEFAULT: afun = sblock; break;
}
if (node->a) { pc(' '); afun(d, node->a); }
if (node->b) { pc(' '); bfun(d, node->b); }
if (node->c) { pc(' '); cfun(d, node->c); }
if (node->d) { pc(' '); dfun(d, node->d); }
pc(')');
}
static void slist(int d, js_Ast *list)
{
pc('[');
while (list) {
assert(list->type == AST_LIST);
snode(d, list->a);
list = list->b;
if (list)
pc(' ');
}
pc(']');
}
static void sblock(int d, js_Ast *list)
{
ps("[\n");
in(d+1);
while (list) {
assert(list->type == AST_LIST);
snode(d+1, list->a);
list = list->b;
if (list) {
nl();
in(d+1);
}
}
nl(); in(d); pc(']');
}
void jsP_dumplist(js_State *J, js_Ast *prog)
{
minify = 0;
if (prog->type == AST_LIST)
sblock(0, prog);
else
snode(0, prog);
nl();
}
/* Compiled code */
void jsC_dumpfunction(js_State *J, js_Function *F)
{
js_Instruction *p = F->code;
js_Instruction *end = F->code + F->codelen;
int i;
minify = 0;
printf("%s(%d)\n", F->name, F->numparams);
if (F->lightweight) printf("\tlightweight\n");
if (F->arguments) printf("\targuments\n");
printf("\tsource %s:%d\n", F->filename, F->line);
for (i = 0; i < F->funlen; ++i)
printf("\tfunction %d %s\n", i, F->funtab[i]->name);
for (i = 0; i < F->varlen; ++i)
printf("\tlocal %d %s\n", i + 1, F->vartab[i]);
printf("{\n");
while (p < end) {
int ln = *p++;
int c = *p++;
printf("%5d(%3d): ", (int)(p - F->code) - 2, ln);
ps(opname[c]);
switch (c) {
case OP_INTEGER:
printf(" %d", (*p++) - 32768);
break;
case OP_NUMBER:
printf(" %.9g", F->numtab[*p++]);
break;
case OP_STRING:
pc(' ');
pstr(F->strtab[*p++]);
break;
case OP_NEWREGEXP:
pc(' ');
pregexp(F->strtab[p[0]], p[1]);
p += 2;
break;
case OP_GETVAR:
case OP_HASVAR:
case OP_SETVAR:
case OP_DELVAR:
case OP_GETPROP_S:
case OP_SETPROP_S:
case OP_DELPROP_S:
case OP_CATCH:
pc(' ');
ps(F->strtab[*p++]);
break;
case OP_GETLOCAL:
case OP_SETLOCAL:
case OP_DELLOCAL:
printf(" %s", F->vartab[*p++ - 1]);
break;
case OP_CLOSURE:
case OP_CALL:
case OP_NEW:
case OP_JUMP:
case OP_JTRUE:
case OP_JFALSE:
case OP_JCASE:
case OP_TRY:
printf(" %d", *p++);
break;
}
nl();
}
printf("}\n");
for (i = 0; i < F->funlen; ++i) {
if (F->funtab[i] != F) {
printf("function %d ", i);
jsC_dumpfunction(J, F->funtab[i]);
}
}
}
/* Runtime values */
void js_dumpvalue(js_State *J, js_Value v)
{
minify = 0;
switch (v.type) {
case JS_TUNDEFINED: printf("undefined"); break;
case JS_TNULL: printf("null"); break;
case JS_TBOOLEAN: printf(v.u.boolean ? "true" : "false"); break;
case JS_TNUMBER: printf("%.9g", v.u.number); break;
case JS_TSHRSTR: printf("'%s'", v.u.shrstr); break;
case JS_TLITSTR: printf("'%s'", v.u.litstr); break;
case JS_TMEMSTR: printf("'%s'", v.u.memstr->p); break;
case JS_TOBJECT:
if (v.u.object == J->G) {
printf("[Global]");
break;
}
switch (v.u.object->type) {
case JS_COBJECT: printf("[Object %p]", (void*)v.u.object); break;
case JS_CARRAY: printf("[Array %p]", (void*)v.u.object); break;
case JS_CFUNCTION:
printf("[Function %p, %s, %s:%d]",
(void*)v.u.object,
v.u.object->u.f.function->name,
v.u.object->u.f.function->filename,
v.u.object->u.f.function->line);
break;
case JS_CSCRIPT: printf("[Script %s]", v.u.object->u.f.function->filename); break;
case JS_CCFUNCTION: printf("[CFunction %s]", v.u.object->u.c.name); break;
case JS_CBOOLEAN: printf("[Boolean %d]", v.u.object->u.boolean); break;
case JS_CNUMBER: printf("[Number %g]", v.u.object->u.number); break;
case JS_CSTRING: printf("[String'%s']", v.u.object->u.s.string); break;
case JS_CERROR: printf("[Error]"); break;
case JS_CARGUMENTS: printf("[Arguments %p]", (void*)v.u.object); break;
case JS_CITERATOR: printf("[Iterator %p]", (void*)v.u.object); break;
case JS_CUSERDATA:
printf("[Userdata %s %p]", v.u.object->u.user.tag, v.u.object->u.user.data);
break;
default: printf("[Object %p]", (void*)v.u.object); break;
}
break;
}
}
static void js_dumpproperty(js_State *J, js_Property *node)
{
minify = 0;
if (node->left->level)
js_dumpproperty(J, node->left);
printf("\t%s: ", node->name);
js_dumpvalue(J, node->value);
printf(",\n");
if (node->right->level)
js_dumpproperty(J, node->right);
}
void js_dumpobject(js_State *J, js_Object *obj)
{
minify = 0;
printf("{\n");
if (obj->properties->level)
js_dumpproperty(J, obj->properties);
printf("}\n");
}
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