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Tcl: recurse for []
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@wtschueller
wtschueller committed Jun 11, 2014
1 parent 6245ef4 commit 9d315a9
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Showing 3 changed files with 677 additions and 74 deletions.
256 changes: 182 additions & 74 deletions src/tclscanner.l
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Expand Up @@ -1700,19 +1700,150 @@ static void tcl_codify_link(QCString name)

}

//! scan general argument for brackets
//
// parses (*tcl.list_commandwords.at(i)).utf8() and checks for brackets.
// Starts a new scan context if needed (*myScan==0 and brackets found).
// Returns NULL or the created scan context.
//
static tcl_scan *tcl_command_ARG(tcl_scan *myScan, unsigned int i, bool ignoreOutermostBraces)
{
QCString myName;
bool insideQuotes=false;
unsigned int insideBrackets=0;
unsigned int insideBraces=0;
myName = (*tcl.list_commandwords.at(i)).utf8();
if (i%2 != 0)
{
// handle white space
if (myScan!=NULL)
{
myScan->after << "NULL" << myName;
}
else
{
tcl_codify(NULL,myName);
}
}
else
{
QCString myStr = "";
unsigned int j;
for (j=0;j<myName.length();j++)
{
QChar c = myName[j];
bool backslashed = false;
if (j>0)
{
backslashed = myName[j-1]=='\\';
}
// this is a state machine
// input is c
// internal state is myScan and insideXXX
// these are the transitions:
if (c=='[' && !backslashed && insideBraces==0)
{
insideBrackets++;
}
if (c==']' && !backslashed && insideBraces==0 && insideBrackets>0)
{
insideBrackets--;
}
if (c=='{' && !backslashed && !insideQuotes && !(ignoreOutermostBraces && j==0))
{
insideBraces++;
}
if (c=='}' && !backslashed && !insideQuotes && insideBraces>0)
{
insideBraces--;
}
if (c=='"' && !backslashed && insideBraces==0)
{
insideQuotes=!insideQuotes;
}
// all output, depending on state and input
if (c=='[' && !backslashed && insideBrackets==1 && insideBraces==0)
{
// the first opening bracket, output what we have so far
myStr+=c;
if (myScan!=NULL)
{
myScan->after << "NULL" << myStr;
}
else
{
tcl_codify(NULL,myStr);
}
myStr="";
}
else if (c==']' && !backslashed && insideBrackets==0 && insideBraces==0)
{
// the last closing bracket, start recursion, switch to deferred
if (myScan!=NULL)
{
myScan->after << "script" << myStr;
}
else
{
myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',myStr,
myScan->ns,myScan->entry_cl,myScan->entry_fn);
}
myStr="";
myStr+=c;
}
else
{
myStr+=c;
}
}
if (myScan!=NULL)
{
myScan->after << "NULL" << myStr;
}
else
{
if (i==0)
{
tcl_codify_link(myStr);
}
else
{
tcl_codify(NULL,myStr);
}
}
}
return (myScan);
}

//! Handle internal tcl commands.
// "if expr1 ?then? body1 elseif expr2 ?then? body2 elseif ... ?else? ?bodyN?"
static void tcl_command_IF(QStringList type)
{
D
tcl_codify_cmd("keyword",0);
tcl_codify_cmd(NULL,1);
tcl_scan *myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(2),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
tcl_scan *myScan = NULL;
myScan = tcl_command_ARG(myScan, 2, true);
for (unsigned int i = 3;i<tcl.list_commandwords.count();i++)
{
myScan->after << type[i] << tcl.list_commandwords[i];
if (type[i] == "expr")
{
myScan = tcl_command_ARG(myScan, i, true);
}
else
{
if (myScan!=0)
{
myScan->after << type[i] << tcl.list_commandwords[i];
}
else
{
myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(i),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
}
}
}
}
//! Handle internal tcl commands.
Expand All @@ -1726,7 +1857,7 @@ D
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(2),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
myScan->after << "NULL" << tcl.list_commandwords[3];
myScan->after << "script" << tcl.list_commandwords[4];
myScan = tcl_command_ARG(myScan, 4, true);
myScan->after << "NULL" << tcl.list_commandwords[5];
myScan->after << "script" << tcl.list_commandwords[6];
myScan->after << "NULL" << tcl.list_commandwords[7];
Expand All @@ -1740,14 +1871,22 @@ static void tcl_command_FOREACH()
{
D
unsigned int i;
tcl_scan *myScan=NULL;
tcl_codify_cmd("keyword",0);
for (i = 1;i<tcl.list_commandwords.count()-1;i++)
{
tcl_codify_cmd(NULL,i);
myScan = tcl_command_ARG(myScan, i, false);
}
if (myScan!=0)
{
myScan->after << "script" << tcl.list_commandwords[tcl.list_commandwords.count()-1];
}
else
{
myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(tcl.list_commandwords.count()-1),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
}
tcl_scan *myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(tcl.list_commandwords.count()-1),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
}

///! Handle internal tcl commands.
Expand All @@ -1757,68 +1896,29 @@ static void tcl_command_WHILE()
D
tcl_codify_cmd("keyword",0);
tcl_codify_cmd(NULL,1);
tcl_scan *myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(2),
tcl_scan *myScan = NULL;
myScan = tcl_command_ARG(myScan, 2, true);
myScan = tcl_command_ARG(myScan, 3, false);
if (myScan!=0)
{
myScan->after << "script" << tcl.list_commandwords[4];
}
else
{
myScan=tcl.scan.at(0);
myScan = tcl_scan_start('?',*tcl.list_commandwords.at(4),
myScan->ns,myScan->entry_cl,myScan->entry_fn);
myScan->after << "NULL" << tcl.list_commandwords[3];
myScan->after << "script" << tcl.list_commandwords[4];
}
}

//! Handle all other commands.
// Create links of first command word or first command word inside [].
static void tcl_command_OTHER()
{
if (tcl.code == NULL) return;
D
QCString myName;
tcl_scan *myScan=NULL;
for (unsigned int i=0; i< tcl.list_commandwords.count(); i++)
{
myName = (*tcl.list_commandwords.at(i)).utf8();
if (i==0)
{
tcl_codify_link(myName);
}
else if (i%2 != 0)
{
tcl_codify(NULL,myName);
}
else
{
QCString myStr="";
int myCmd=0;
unsigned int i;
for (i=0;i<myName.length();i++)
{
QChar c = myName[i];
if (myCmd)
{
if (c==' '||c=='\t'||c=='\n'||c==']')
{//end of command
tcl_codify_link(myStr);
myStr="";
myCmd=0;
}
myStr+=c;
}
else
{
myStr+=c;
if (c=='[')
{//start of command
for (;i<myName.length();i++)
{
c = myName[i+1];
if (c!=' ' && c!='\t' && c!='\n') break;
myStr+=c;
}
tcl_codify(NULL,myStr);
myStr="";
myCmd=1;
}
}
}
tcl_codify(NULL,myStr);
}
myScan = tcl_command_ARG(myScan, i, false);
}
}

Expand Down Expand Up @@ -2200,13 +2300,14 @@ tcl_inf("->\n");

// check command
QCString myStr = (*tcl.list_commandwords.at(0)).utf8();
tcl_scan *myScanBackup=tcl.scan.at(0);
int myLevel = 0;
Protection myProt = tcl.protection;

if (tcl.list_commandwords.count() < 3)
{
tcl_command_OTHER();
goto command_text;
goto command_end;
}
// remove leading "::" and apply TCL_SUBST
if (myStr.left(2)=="::") myStr = myStr.mid(2);
Expand Down Expand Up @@ -2294,7 +2395,7 @@ tcl_inf("->\n");
goto command_end;
}
tcl_command_OTHER();
goto command_text;
goto command_end;
}
if (myStr=="itcl::class")
{
Expand All @@ -2317,7 +2418,7 @@ tcl_inf("->\n");
goto command_end;
}
tcl_command_OTHER();
goto command_text;
goto command_end;
}
if (myStr=="oo::define")
{
Expand All @@ -2331,7 +2432,7 @@ tcl_inf("->\n");
if (tcl.scan.at(0)->entry_fn == NULL)
{// only parsed outside functions
tcl_command_VARIABLE(tcl.scan.at(0)->entry_cl && tcl.scan.at(0)->entry_cl->name!="");
goto command_text;
goto command_end;
}
}
if (myStr=="common")
Expand All @@ -2340,7 +2441,7 @@ tcl_inf("->\n");
if (tcl.scan.at(0)->entry_fn == NULL)
{// only parsed outside functions
tcl_command_VARIABLE(0);
goto command_text;
goto command_end;
}
}
if (myStr=="inherit" || myStr=="superclass")
Expand Down Expand Up @@ -2378,7 +2479,7 @@ if expr1 ?then? body1 elseif expr2 ?then? body2 elseif ... ?else? ?bodyN?
if (myStr=="if" && tcl.list_commandwords.count() > 4)
{
QStringList myType;
myType << "keyword" << "NULL" << "script" << "NULL";
myType << "keyword" << "NULL" << "expr" << "NULL";
char myState='x';// last word: e'x'pr 't'hen 'b'ody 'e'lse else'i'f..
for (unsigned int i = 4; i < tcl.list_commandwords.count(); i = i + 2)
{
Expand Down Expand Up @@ -2427,7 +2528,7 @@ if expr1 ?then? body1 elseif expr2 ?then? body2 elseif ... ?else? ?bodyN?
else if (myState=='i')
{
myState='x';
myType << "script" << "NULL";
myType << "expr" << "NULL";
}
}
if (myState != 'b') {myLine=__LINE__;goto command_warn;}
Expand All @@ -2441,15 +2542,22 @@ if expr1 ?then? body1 elseif expr2 ?then? body2 elseif ... ?else? ?bodyN?
goto command_end;
}
tcl_command_OTHER();
goto command_text;
goto command_end;
command_warn:// print warning message because of wrong used syntax
tcl_war("%d count=%d: %s\n",myLine,tcl.list_commandwords.count(),tcl.list_commandwords.join(" ").ascii());
tcl_command_OTHER();
command_text:// print remaining text as comment
if (!myText.isEmpty()) tcl_codify("comment",myText);
myText = "";
command_end:// add remaining text to current context
if (!myText.isEmpty()) tcl.scan.at(0)->after << "comment" << myText;
if (!myText.isEmpty())
{
if(myScanBackup==tcl.scan.at(0))
{
tcl_codify("comment",myText);
}
else
{
tcl.scan.at(0)->after << "comment" << myText;
}
}
tcl.list_commandwords.clear();
tcl.command = 0;
tcl.protection = myProt;
Expand Down

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