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syntax.c
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syntax.c
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/***********************************************************************************
Copyright 2014 Arizona Board of Regents; all rights reserved.
This software is being provided by the copyright holders under the
following license. By obtaining, using and/or copying this software, you
agree that you have read, understood, and will comply with the following
terms and conditions:
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee or royalty is hereby granted,
provided that the full text of this notice appears on all copies of the
software and documentation or portions thereof, including modifications,
that you make.
This software is provided "as is," and copyright holders make no
representations or warranties, expressed or implied. By way of example, but
not limitation, copyright holders make no representations or warranties of
merchantability or fitness for any particular purpose or that the use of the
software or documentation will not infringe any third party patents,
copyrights, trademarks or other rights. Copyright holders will bear no
liability for any use of this software or documentation.
The name and trademarks of copyright holders may not be used in advertising
or publicity pertaining to the software without specific, written prior
permission. Title to copyright in this software and any associated
documentation will at all times remain with copyright holders.
***********************************************************************************/
/*
* syntax.c
*
* Created on: May 17, 2011
* Author: genlu
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "instr.h"
#include "opcode.h"
#include "cfg.h"
#include "syntax.h"
#include "sig_function.h"
#include "function.h"
static int syntaxBlockIDctl=0;
char *this_str = "this";
char *arg_str = "arg";
char *local_var_str = "local_var";
char *length_str = "length";
char *null_str = "null";
#define DEBUG 0
/*
* pair[0] is old CFG id
* pair[1] is corresponding syntax tree node id
*/
void **createIdPair(){
void **pair = (void **)malloc(2*sizeof(void *));
return pair;
}
void destroyIdPair(void *p){
assert(p);
void **pair = (void **)p;
free(pair);
}
int idPairCompare(void *t1, void *t2){
assert(t1 && t2);
return ((BasicBlock *)((void **)t1)[0])->id - ((BasicBlock *)((void **)t2)[0])->id;
}
//////////////////////////////////////
int andOrTargetCompare(void *t1, void *t2){
assert(t1 && t2);
return ((AndOrTarget *)t1)->targetAddr - ((AndOrTarget *)t2)->targetAddr;
}
void printAndOrTarget(void *target){
assert(target);
printf("targetAddr: %lx Num: %d\n", ((AndOrTarget *)target)->targetAddr, ((AndOrTarget *)target)->num);
}
void destroyAndOrTarget(void *target){
assert(target);
free((AndOrTarget *)target);
}
AndOrTarget *createAndOrTarget(){
AndOrTarget *ret = (AndOrTarget *)malloc(sizeof(AndOrTarget));
assert(ret);
ret->targetAddr=0;
ret->num=0;
return ret;
}
AndOrTarget *searchForTarget(ArrayList *list, ADDRESS addr){
assert(list);
AndOrTarget *target;
int i;
for(i=0;i<al_size(list);i++){
target = (AndOrTarget *)al_get(list, i);
if(target->targetAddr==addr)
return target;
}
return NULL;
}
StackNode *popSyntaxStack(SyntaxStack *stack){
StackNode *temp = NULL;;
assert(stack);
if(stack->number==1){
(stack->number)--;
temp = stack->top;
stack->top = stack->bottom = NULL;
}else if(stack->number>1){
(stack->number)--;
stack->top->next->prev = NULL;
temp = stack->top;
stack->top = stack->top->next;
temp->prev = temp->next = NULL;
}
#if DEBUG
assert(temp);
printf("stack_size:%d temp%p\n", stack->number, temp);
printf("pop %s\t%d\n",
(temp->type==SYN_NODE)?"SYN":"EXP",
(temp->type==SYN_NODE)?(((SyntaxTreeNode *)(temp->node))->type):(((ExpTreeNode *)(temp->node))->type));
#endif
return temp;
}
void pushSyntaxStack(SyntaxStack *stack, StackNode *node){
assert(stack && node);
#if DEBUG
printf("push %s\t%d\n",
(node->type==SYN_NODE)?"SYN":"EXP",
(node->type==SYN_NODE)?(((SyntaxTreeNode *)(node->node))->type):(((ExpTreeNode *)(node->node))->type));
#endif
if(stack->number==0){
(stack->number)++;
stack->bottom = stack->top = node;
}else{
(stack->number)++;
node->next = stack->top;
stack->top->prev = node;
stack->top = node;
}
//printf("stack_size:%d temp%p\n", stack->number, node);
return;
}
StackNode *createSyntaxStackNode(){
StackNode *node;
node = (StackNode *)malloc(sizeof(StackNode));
assert(node);
node->prev = node->next = node->node = NULL;
return node;
}
void destroySyntaxStackNode(StackNode *node ){
if(!node)
return;
//todo
/* if(node->type == SYN_NODE){
destroySyntaxTreeNode((SyntaxTreeNode *)node->node);
}
else if(node->type == EXP_NODE){
destroyExpTreeNode((ExpTreeNode *)node->node);
}*/
free(node);
}
SyntaxStack *createSyntaxStack(void){
SyntaxStack *stack;
stack = (SyntaxStack *)malloc(sizeof(SyntaxStack));
assert(stack);
stack->bottom = stack->top = NULL;
stack->number = 0;
return stack;
}
void stackTest(){
SyntaxStack *stack = createSyntaxStack();
StackNode *node;
long x;
long i;
for(i=0;i<10;i++){
node = createSyntaxStackNode();
node->type = EXP_NODE;
node->node = (void *)i;
pushSyntaxStack(stack, node);
printf("pushed: %ld\n", i);
}
for(i=0;i<5;i++){
node = popSyntaxStack(stack);
if(!node)
break;
x = (long)node->node;
printf("poped: %ld\n", x);
}
for(i=0;i<5;i++){
node = createSyntaxStackNode();
node->type = EXP_NODE;
node->node = (void *)i;
pushSyntaxStack(stack, node);
printf("pushed: %ld\n", i);
}
for(;;){
node = popSyntaxStack(stack);
if(!node)
break;
x = (long)node->node;
printf("poped: %ld\n", x);
}
}
/*******************************************************************/
ExpTreeNode *createExpTreeNode(){
ExpTreeNode *node;
node = (ExpTreeNode *)malloc(sizeof(ExpTreeNode));
assert(node);
node->flags = 0;
memset(&(node->u), 0, sizeof(node->u));
return node;
}
void destroyExpTreeNode(ExpTreeNode *node){
//TODO
if(node)
free(node);
}
bool expIsTrue(ExpTreeNode *node){
bool ret;
assert(node);
ret = false;
if(node->type==EXP_CONST_VALUE){
if(EXP_HAS_FLAG(node, EXP_IS_BOOL)){
ret = node->u.const_value_bool;
}
//todo: other constant values equivelent to true
}
return ret;
}
void printExpTreeNode(ExpTreeNode *node, int slice_flag){
#define EXP_PRINTF(s) do{if(!slice_flag || (slice_flag && EXP_HAS_FLAG(node, EXP_IN_SLICE)))printf s ;}while(0)
int i;
ExpTreeNode *expNode;
if(!node)
return;
char *str;
str = (char *)malloc(16);
//printf("@%d\n", node->type);
switch(node->type){
case EXP_NAME:
if(node->u.name)
EXP_PRINTF(("%s", node->u.name));
else
EXP_PRINTF(("undefined"));
break;
case EXP_CONST_VALUE:
if(EXP_HAS_FLAG(node, EXP_IS_INT)){
EXP_PRINTF(("%ld", node->u.const_value_int));
}else if(EXP_HAS_FLAG(node, EXP_IS_DOUBLE)){
EXP_PRINTF(("%f", node->u.const_value_double));
}else if(EXP_HAS_FLAG(node, EXP_IS_STRING)){
EXP_PRINTF(("\"%s\"", node->u.const_value_str));
}else if(EXP_HAS_FLAG(node, EXP_IS_REGEXP)){
EXP_PRINTF(("%s", node->u.const_value_str));
}else if(EXP_HAS_FLAG(node, EXP_IS_BOOL)){
EXP_PRINTF(("%s", (node->u.const_value_bool==true)?"true":"false"));
}
break;
case EXP_CALL:
case EXP_EVAL:
if(node->type==EXP_CALL && !EXP_HAS_FLAG(node,EXP_IS_DOC_WRITE)){
printExpTreeNode(node->u.func.name, slice_flag);
}else if(node->type==EXP_EVAL || (node->type==EXP_CALL && EXP_HAS_FLAG(node,EXP_IS_DOC_WRITE))){
if(!slice_flag){
if(node->type==EXP_EVAL)
printf("eval");
else
printExpTreeNode(node->u.func.name, slice_flag);
}
}
if(!slice_flag || (node->type!=EXP_EVAL && !EXP_HAS_FLAG(node,EXP_IS_DOC_WRITE))){
EXP_PRINTF(("( "));
for(i=node->u.func.num_paras;i>0;i--){
expNode = (ExpTreeNode *)al_get(node->u.func.parameters, i-1);
printExpTreeNode(expNode, slice_flag);
if(i>1)
EXP_PRINTF((", "));
}
EXP_PRINTF((" )"));
}else if(slice_flag && node->type==EXP_EVAL){
for(i=node->u.func.num_paras;i>0;i--){
expNode = (ExpTreeNode *)al_get(node->u.func.parameters, i-1);
printExpTreeNode(expNode, slice_flag);
if(i>1)
EXP_PRINTF((";\n"));
}
}
/*
* right now, print parameters of eval(), which is probably wrong
* 10/10/2011
*/
if(slice_flag && (node->type==EXP_EVAL || EXP_HAS_FLAG(node,EXP_IS_DOC_WRITE))){
for(i=node->u.func.num_paras;i>0;i--){
expNode = (ExpTreeNode *)al_get(node->u.func.parameters, i-1);
//printExpTreeNode(expNode, slice_flag);
if(i>1)
EXP_PRINTF((", "));
}
sprintf(str, "block_%d", node->u.func.funcEntryBlock->id);
EXP_PRINTF(("\n/* eval'ed code -> %s */", str));
}
break;
case EXP_NEW:
EXP_PRINTF(("("));
EXP_PRINTF(("new "));
printExpTreeNode(node->u.func.name, slice_flag);
EXP_PRINTF(("( "));
for(i=node->u.func.num_paras-1;i>=0;i--){
expNode = (ExpTreeNode *)al_get(node->u.func.parameters, i);
printExpTreeNode(expNode, slice_flag);
if(i)
EXP_PRINTF((", "));
}
EXP_PRINTF((" )"));
EXP_PRINTF((")"));
if(node->u.func.funcEntryBlock){
sprintf(str, "block_%d", node->u.func.funcEntryBlock->id);
EXP_PRINTF(("/* target function: %s */", str));
}
break;
case EXP_PROP:
EXP_PRINTF(("("));
//print obj
EXP_PRINTF(("("));
printExpTreeNode(node->u.prop.objName, slice_flag);
EXP_PRINTF((")"));
//print prop
EXP_PRINTF(("."));
printExpTreeNode(node->u.prop.propName, slice_flag);
EXP_PRINTF((")"));
break;
case EXP_BIN:
EXP_PRINTF(("("));
//print lval
if(node->u.bin_op.op==OP_INITPROP)
EXP_PRINTF(("\""));
printExpTreeNode(node->u.bin_op.lval, slice_flag);
if(node->u.bin_op.op==OP_INITPROP)
EXP_PRINTF(("\""));
//print op
switch(node->u.bin_op.op){
case OP_ADD:
EXP_PRINTF(("+"));
break;
case OP_SUB:
EXP_PRINTF(("-"));
break;
case OP_MUL:
EXP_PRINTF(("*"));
break;
case OP_DIV:
EXP_PRINTF(("/"));
break;
case OP_MOD:
EXP_PRINTF(("%%"));
break;
case OP_INITPROP:
EXP_PRINTF((":"));
break;
case OP_GE:
EXP_PRINTF((">="));
break;
case OP_GT:
EXP_PRINTF((">"));
break;
case OP_LE:
EXP_PRINTF(("<="));
break;
case OP_LT:
EXP_PRINTF(("<"));
break;
case OP_EQ:
EXP_PRINTF(("=="));
break;
case OP_NE:
EXP_PRINTF(("!="));
break;
case OP_AND:
EXP_PRINTF(("&&"));
break;
case OP_OR:
EXP_PRINTF(("||"));
break;
case OP_ASSIGN:
EXP_PRINTF(("="));
break;
default:
EXP_PRINTF(("?"));
break;
}
//print rval
printExpTreeNode(node->u.bin_op.rval, slice_flag);
EXP_PRINTF((")"));
break;
case EXP_UN:
{
EXP_PRINTF(("("));
switch(node->u.un_op.op){
case OP_NOT:
EXP_PRINTF(("!"));
printExpTreeNode(node->u.un_op.lval, slice_flag);
break;
case OP_VINC:
if(node->u.un_op.name)
EXP_PRINTF(("%s",node->u.un_op.name));
else
printExpTreeNode(node->u.un_op.lval, slice_flag);
EXP_PRINTF(("++"));
break;
case OP_VDEC:
if(node->u.un_op.name)
EXP_PRINTF(("%s",node->u.un_op.name));
else
printExpTreeNode(node->u.un_op.lval, slice_flag);
EXP_PRINTF(("--"));
break;
case OP_INCV:
EXP_PRINTF(("++"));
if(node->u.un_op.name)
EXP_PRINTF(("%s",node->u.un_op.name));
else
printExpTreeNode(node->u.un_op.lval, slice_flag);
break;
case OP_DECV:
EXP_PRINTF(("--"));
if(node->u.un_op.name)
EXP_PRINTF(("%s",node->u.un_op.name));
else
printExpTreeNode(node->u.un_op.lval, slice_flag);
break;
default:
break;
}
EXP_PRINTF((")"));
}
break;
case EXP_ARRAY_ELM:
printExpTreeNode(node->u.array_elm.name, slice_flag);
EXP_PRINTF(("["));
printExpTreeNode(node->u.array_elm.index, slice_flag);
EXP_PRINTF(("]"));
break;
case EXP_ARRAY_INIT:
if(EXP_HAS_FLAG(node, EXP_IS_PROP_INIT)){
EXP_PRINTF(("{ "));
}else{
EXP_PRINTF(("[ "));
}
assert(node->u.array_init.size == al_size(node->u.array_init.initValues));
for(i=0;i<al_size(node->u.array_init.initValues);i++){
expNode = (ExpTreeNode *)al_get(node->u.array_init.initValues, i);
printExpTreeNode(expNode, slice_flag);
if(i<al_size(node->u.array_init.initValues)-1)
EXP_PRINTF((", "));
}
if(EXP_HAS_FLAG(node, EXP_IS_PROP_INIT)){
EXP_PRINTF((" }"));
}else{
EXP_PRINTF((" ]"));
}
break;
case EXP_UNDEFINED:
default:
break;
}//end switch
free(str);
#undef EXP_PRINTF
}
/*******************************************************************/
SyntaxTreeNode *createSyntaxTreeNode(){
SyntaxTreeNode *node;
node = (SyntaxTreeNode *)malloc(sizeof(SyntaxTreeNode));
assert(node);
node->flags = 0;
node->parent = NULL;
node->predsList = al_new();
node->id = syntaxBlockIDctl++;
memset(&(node->u), 0, sizeof(node->u));
return node;
}
void destroySyntaxTreeNode(SyntaxTreeNode *node){
//TODO
if(node){
if(node->predsList)
al_free(node->predsList);
free(node);
}
}
int SyntaxTreeNodeCompareByBlockID(void *i1, void *i2){
assert(i1 && i2);
int id1, id2;
id1 = ((SyntaxTreeNode *)i1)->id;
id2 = ((SyntaxTreeNode *)i2)->id;
/* assert(((SyntaxTreeNode *)i1)->type == TN_BLOCK || ((SyntaxTreeNode *)i1)->type == TN_WHILE || ((SyntaxTreeNode *)i1)->type == TN_FUNCTION);
assert(((SyntaxTreeNode *)i2)->type == TN_BLOCK || ((SyntaxTreeNode *)i2)->type == TN_WHILE || ((SyntaxTreeNode *)i1)->type == TN_FUNCTION);
if(((SyntaxTreeNode *)i1)->type == TN_BLOCK){
id1 = ((SyntaxTreeNode *)i1)->u.block.cfg_id;
}else if(((SyntaxTreeNode *)i1)->type == TN_WHILE){
id1 = ((SyntaxTreeNode *)i1)->u.loop.header->id;
}else
id1 = ((SyntaxTreeNode *)i1)->u.func.funcStruct->funcEntryBlock->id;
if(((SyntaxTreeNode *)i2)->type == TN_BLOCK){
id2 = ((SyntaxTreeNode *)i2)->u.block.cfg_id;
}else if(((SyntaxTreeNode *)i2)->type == TN_WHILE){
id2 = ((SyntaxTreeNode *)i2)->u.loop.header->id;
}else
id2 = ((SyntaxTreeNode *)i2)->u.func.funcStruct->funcEntryBlock->id;*/
return id1-id2;
}
/*
* return true if the node has not statements in there (could have empty blocks)
*/
bool SyntaxNodeIsEmpty(SyntaxTreeNode *node){
assert(node);
int i;
bool ret;
SyntaxTreeNode *tempNode;
ret = true;
//then recursively set each child (for block node)
switch(node->type){
case TN_BLOCK:
for(i=0;i<al_size(node->u.block.statements);i++){
tempNode = al_get(node->u.block.statements, i);
ret = ret && SyntaxNodeIsEmpty(tempNode);
}
break;
case TN_FUNCTION:
case TN_WHILE:
case TN_IF_ELSE:
case TN_GOTO:
case TN_RETURN:
case TN_RETEXP:
case TN_EXP:
case TN_DEFVAR:
ret = false;
default:
break;
}
return ret;
}
bool SyntaxNodeListIsEmpty(ArrayList *statements){
assert(statements);
int i;
bool ret;
SyntaxTreeNode *tempNode;
ret = true;
for(i=0;i<al_size(statements);i++){
tempNode = al_get(statements, i);
ret = ret && SyntaxNodeIsEmpty(tempNode);
}
return ret;
}
ArrayList *tempSynTree=NULL;
bool print_flag = false;
void printSyntaxTreeNode(SyntaxTreeNode *node, int slice_flag){
#define SYN_PRINTF(s) do{if(!slice_flag || (slice_flag && TN_HAS_FLAG(node, TN_IN_SLICE)))printf s ;}while(0)
assert(slice_flag==0||slice_flag==1);
int i;
char *str;
SyntaxTreeNode *sTreeNode;
//print an empty statement
if(!node && !slice_flag){
printf(";\t//this branch's likely missing from dynamic trace\n");
return;
}
if(print_flag)
printf("\n//id:%d\n", node->id);
str = (char *)malloc(16);
switch(node->type){
case TN_FUNCTION:
if(slice_flag && !FUNC_HAS_FLAG(node->u.func.funcStruct, FUNC_IN_SLICE)){
//assert(slice_flag && !TN_HAS_FLAG(node, TN_IN_SLICE));
break;
}
//eval'ed code block still use CFG id instead of SyntaxTreeNode ID!!!!!!
if(node->u.func.funcStruct->funcEntryBlock &&
BBL_HAS_FLAG(node->u.func.funcStruct->funcEntryBlock, BBL_IS_EVAL_ENTRY)){
sprintf(str, "block_%d:", node->u.func.funcStruct->funcEntryBlock->id);
printf("//eval'ed code\n%s", str);
printf("{\n");
}
else{
if(node->u.func.funcStruct->funcEntryBlock==NULL)
assert(TN_HAS_FLAG(node, TN_IS_SIG_FUNCTION));
printf("function %s ", node->u.func.funcStruct->funcName);
printf("(");
for(i=0;i<=node->u.func.funcStruct->args;i++){
printf("%s%d", arg_str, i);
if(i<node->u.func.funcStruct->args)
printf(", ");
}
printf(") {\n");
}
printf("//has %u local variables\n", node->u.func.funcStruct->loc_vars);
//print checkpoint
if(TN_HAS_FLAG(node, TN_HAS_CHECKPOINT))
printf("if(%s[%s++]!=\"%s\")\nthrow \"%s\";\n", vectorStr, vectorIndex, node->u.func.funcStruct->funcName, exceptionStr);
for(i=0;i<al_size(node->u.func.funcBody);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.func.funcBody, i);
assert(sTreeNode);
printSyntaxTreeNode(sTreeNode, slice_flag);
printf("\n");
}
printf("}\n");
break;
//todo: add check points
case TN_WHILE:
if(slice_flag && !TN_HAS_FLAG(node, TN_IN_SLICE))
break;
if(al_size(node->predsList)>0)
printf("block_%d:\n", node->id);
printf("while( "); printExpTreeNode(node->u.loop.cond, slice_flag);printf(" ){\n");
//print inbody checkpoint
if(TN_HAS_FLAG(node, TN_HAS_CHECKPOINT))
printf("if(%s[%s++]!=%d)\nthrow \"%s\";\n", vectorStr, vectorIndex, node->u.loop._bodyBranchType, exceptionStr);
for(i=0;i<al_size(node->u.loop.loopBody);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.loop.loopBody, i);
assert(sTreeNode);
printSyntaxTreeNode(sTreeNode, slice_flag);
printf("\n");
}
printf("}\t//end loop\n");
//print out-body check point
if(TN_HAS_FLAG(node, TN_HAS_CHECKPOINT))
printf("if(%s[%s++]!=%d)\nthrow \"%s\";\n", vectorStr, vectorIndex, 1-node->u.loop._bodyBranchType, exceptionStr);
break;
case TN_BLOCK:
//printf("size of predsList: %d\n", al_size(node->predsList));
if(al_size(node->predsList)==0)
sprintf(str, "\n");
else if(TN_HAS_FLAG(node, TN_AFTER_RELINK_GOTO))
sprintf(str, "block_%d:", node->id);
else
sprintf(str, "block_%d:", node->u.block.cfg_id);
printf("\n%s\n", str);
for(i=0;i<al_size(node->u.block.statements);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.block.statements, i);
assert(sTreeNode);
//printf("\n");
printSyntaxTreeNode(sTreeNode, slice_flag);
printf("\n");
}
printf("\n");
break;
case TN_EXP:
printExpTreeNode(node->u.expNode, slice_flag);
SYN_PRINTF((";"));
break;
case TN_GOTO:
//printf("\n//goto id:%d\n", node->id);
if(TN_HAS_FLAG(node, TN_IS_GOTO_BREAK)){
SYN_PRINTF(("break;"));
}else if(TN_HAS_FLAG(node, TN_IS_GOTO_CONTINUE)){
SYN_PRINTF(("continue;"));
}else{
if(0)
;
else if(TN_HAS_FLAG(node, TN_AFTER_RELINK_GOTO)){
SYN_PRINTF(("goto block_%d;", node->u.go_to.synTargetBlock->id));
//SYN_PRINTF(("//goto cfg block_%d;", node->u.go_to.targetBlock->id));
}
else
SYN_PRINTF(("goto block_%d;", node->u.go_to.targetBlock->id));
}
break;
case TN_DEFVAR:
SYN_PRINTF(("var "));
printExpTreeNode(node->u.expNode, slice_flag);
SYN_PRINTF((";"));
break;
case TN_RETURN:
SYN_PRINTF(("return;"));
break;
case TN_RETEXP:
SYN_PRINTF(("return "));
printExpTreeNode(node->u.expNode, slice_flag);
SYN_PRINTF((";"));
break;
case TN_IF_ELSE:
SYN_PRINTF(("if"));
SYN_PRINTF(("( "));
printExpTreeNode(node->u.if_else.cond, slice_flag);
SYN_PRINTF((" ) {\n"));
if(!slice_flag || (slice_flag && TN_HAS_FLAG(node, TN_IN_SLICE))){
//print checkpoint
if(TN_HAS_FLAG(node, TN_HAS_CHECKPOINT))
printf("if(%s[%s++]!=%d)\nthrow \"%s\";\n", vectorStr, vectorIndex, 1-node->u.if_else._ifeq, exceptionStr);
}
for(i=0;i<al_size(node->u.if_else.if_path);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.if_else.if_path, i);
printSyntaxTreeNode(sTreeNode, slice_flag);
}
SYN_PRINTF((" \n}\n"));
//if(!SyntaxNodeListIsEmpty(node->u.if_else.else_path)){
if(1){
SYN_PRINTF((" else {\n"));
if(!slice_flag || (slice_flag && TN_HAS_FLAG(node, TN_IN_SLICE))){
//print checkpoint
if(TN_HAS_FLAG(node, TN_HAS_CHECKPOINT))
printf("if(%s[%s++]!=%d)\nthrow \"%s\";\n", vectorStr, vectorIndex, node->u.if_else._ifeq, exceptionStr);
}
for(i=0;i<al_size(node->u.if_else.else_path);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.if_else.else_path, i);
printSyntaxTreeNode(sTreeNode, slice_flag);
}
SYN_PRINTF(("\n}"));
}
break;
case TN_THROW:
SYN_PRINTF(("throw "));
printExpTreeNode(node->u.expNode, slice_flag);
SYN_PRINTF((";"));
break;
case TN_TRY_CATCH:
SYN_PRINTF((" try {\n"));
for(i=0;i<al_size(node->u.try_catch.try_body);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.try_catch.try_body, i);
printSyntaxTreeNode(sTreeNode, slice_flag);
}
SYN_PRINTF(("\n}"));
SYN_PRINTF(("catch(e) {\n"));
for(i=0;i<al_size(node->u.try_catch.catch_body);i++){
sTreeNode = (SyntaxTreeNode *)al_get(node->u.try_catch.catch_body, i);
printSyntaxTreeNode(sTreeNode, slice_flag);
}
SYN_PRINTF((" \n}\n"));
break;
default:
break;
}//end switch
free(str);
if(tempSynTree && node->type!=TN_FUNCTION && print_flag){
if(node->type!=TN_BLOCK ){
sTreeNode = findAdjacentStatement(tempSynTree, node);
printf("\n/*****************************************\tadj statement:%d\t", sTreeNode?sTreeNode->id:-1);
printf("***************************************/\n");
sTreeNode = findNextStatement(tempSynTree, node);
printf("\n/*****************************************\tnext statement:%d\t", sTreeNode?sTreeNode->id:-1);
printf("***************************************/\n");
}
if(al_size(node->predsList)==1){
sTreeNode = al_get(node->predsList, 0);
printf("\n/*****************************************\tonly ONE pred, should move to:%d\t", sTreeNode->id);
printf("***************************************/\n");
}
}
if(print_flag)
printf("\n//end id:%d\n", node->id);
#undef SYN_PRINTF
}
/*******************************************************************/
void buildBlockSyntaxTreeFromSyntaxStack(SyntaxTreeNode *syntaxBlockNode, SyntaxStack *stack){
assert(syntaxBlockNode && stack);
assert(syntaxBlockNode->type==TN_BLOCK);
assert(syntaxBlockNode->u.block.statements);
StackNode *stackNode1;
SyntaxTreeNode *sTreeNode;
ExpTreeNode *expTreeNode;
if(stack->number==0)
return;
stackNode1 = stack->bottom;
while(stackNode1){
//add syntax tree node into statement list directly.
if(stackNode1->type == SYN_NODE){
al_add(syntaxBlockNode->u.block.statements, stackNode1->node);
}
//convert EXP_CALL, EXP_NEW, assignment and inc/dec expNode into a SyntaxTree node with type TN_EXP
//then add converted node into list, ignore all other ExpTreeNode
else{
assert(stackNode1->type == EXP_NODE);
expTreeNode = (ExpTreeNode *)(stackNode1->node);
if(expTreeNode->type==EXP_CALL || expTreeNode->type==EXP_NEW || expTreeNode->type==EXP_EVAL ||
(expTreeNode->type==EXP_BIN && expTreeNode->u.bin_op.op==OP_ASSIGN) ||
(expTreeNode->type==EXP_UN && (expTreeNode->u.un_op.op==OP_VINC ||
expTreeNode->u.un_op.op==OP_INCV ||
expTreeNode->u.un_op.op==OP_VDEC ||
expTreeNode->u.un_op.op==OP_DECV ))
){
//XXX this will cause memory leaks in stack
// those ignored expNode will not be freed when stack node is destroyed.
sTreeNode = createSyntaxTreeNode();
sTreeNode->type = TN_EXP;
sTreeNode->u.expNode = expTreeNode;
al_add(syntaxBlockNode->u.block.statements, (void *)sTreeNode);
if(EXP_HAS_FLAG(expTreeNode, EXP_IN_SLICE)){
TN_SET_FLAG(syntaxBlockNode, TN_IN_SLICE);
TN_SET_FLAG(sTreeNode, TN_IN_SLICE);
}
}
}
stackNode1 = stackNode1->prev;
}//end while-loop
return;
}
/*
* macros to label nodes in slice
*/
#define LABEL_EXP(exp_node) do{EXP_SET_FLAG(exp_node, EXP_IN_SLICE);/*TN_SET_FLAG(syntaxBlockNode, TN_IN_SLICE);*/}while(0)
#define LABEL_SYN(syn_node) do{TN_SET_FLAG(syn_node, TN_IN_SLICE);TN_SET_FLAG(syntaxBlockNode, TN_IN_SLICE);}while(0)
SyntaxTreeNode *buildSyntaxTreeForBlock(BasicBlock *block, uint32_t flag, ArrayList *funcObjTable, ArrayList *funcCFGs, int slice_flag){
int i,j;
int tempInt;
char *str;
Instruction *instr, *lastInstr;
BlockEdge *edge;
SyntaxStack *stack;
SyntaxTreeNode *syntaxBlockNode, *sTreeNode1, *sTreeNode2;
ExpTreeNode *expTreeNode1, *expTreeNode2, *expTreeNode3, *expTreeNode4;
StackNode *stackNode1, *stackNode2, *stackNode3, *stackNode4;
ArrayList *targetTable;
AndOrTarget *andOrTarget;
syntaxBlockNode = createSyntaxTreeNode();
syntaxBlockNode->type = TN_BLOCK;
syntaxBlockNode->u.block.cfg_id = block->id;
syntaxBlockNode->u.block.cfgBlock = block;
syntaxBlockNode->u.block.statements = al_new();
instr = lastInstr = NULL;
//printf("created a syntax node #%d for basic block #%d\n",syntaxBlockNode->id, block->id);
stack = createSyntaxStack();
//we need a target table for processing AND and OR instructions
targetTable = al_newGeneric(AL_LIST_SET, andOrTargetCompare, printAndOrTarget, destroyAndOrTarget);
//start_over:
#if DEBUG
printf("~~~~~~~~~~~processing block %d\n", block->id);
printBasicBlock(block);
#endif
BBL_SET_FLAG(block, flag);
for(i=0;i<al_size(block->instrs);i++){
lastInstr = instr;
instr = al_get(block->instrs, i);
#if DEBUG
printf("processing.. %lx %s\n", instr->addr, instr->opName);
#endif
/* if(instr->opCode==JSOP_CALL || instr->opCode==JSOP_NEW){
printInstruction(instr);
if(INSTR_HAS_FLAG(instr, INSTR_IS_SCRIPT_INVOKE)){
printf("scripted\n");
assert(i==al_size(block->instrs)-1);
}
else
printf("not!\n");
}*/
assert(instr->inBlock->id == block->id);
//avoid any dangling pointer problem may occur
tempInt = 0;
str = NULL;
edge = NULL;
sTreeNode1 = sTreeNode2 = NULL;
expTreeNode1 = expTreeNode2 = expTreeNode3 = expTreeNode4 = NULL;
stackNode1 = stackNode2 = stackNode3 = stackNode4 = NULL;
andOrTarget = NULL;
//if any missing code due to short circuit, we add an boolean exp as a place holder.
// here we made an assumption that AND/OR either jump to short circuit target or fallthough to next expression
// if branch, then entire AND expression is false (threfore having a true at last won't affect result)
// OR expression is true (threfore having a false at last won't affect result)
if(lastInstr){
if(lastInstr->opCode == JSOP_AND && instr->addr != lastInstr->addr + lastInstr->length){
expTreeNode1 = createExpTreeNode();
expTreeNode1->type = EXP_CONST_VALUE;
expTreeNode1->u.const_value_bool = true;
EXP_SET_FLAG(expTreeNode1, EXP_IS_BOOL);
//put node into slice, if and is in slice
if(slice_flag && INSTR_HAS_FLAG(lastInstr, INSTR_IN_SLICE))
LABEL_EXP(expTreeNode1);
stackNode1 = createSyntaxStackNode();
stackNode1->type = EXP_NODE;
stackNode1->node = (void *)expTreeNode1;
pushSyntaxStack(stack, stackNode1);
}else if(lastInstr->opCode == JSOP_OR && instr->addr != lastInstr->addr + lastInstr->length){
expTreeNode1 = createExpTreeNode();
expTreeNode1->type = EXP_CONST_VALUE;
expTreeNode1->u.const_value_bool = false;
EXP_SET_FLAG(expTreeNode1, EXP_IS_BOOL);
//put node into slice, if or is in slice
if(slice_flag && INSTR_HAS_FLAG(lastInstr, INSTR_IN_SLICE))
LABEL_EXP(expTreeNode1);
stackNode1 = createSyntaxStackNode();
stackNode1->type = EXP_NODE;
stackNode1->node = (void *)expTreeNode1;
pushSyntaxStack(stack, stackNode1);
}
expTreeNode1 = NULL;
stackNode1 = NULL;