d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix REFILL. It must throw RESTART instead of OUTOFTEXT so that

Browse Source 
execution can take place at the point where it stopped after the
input buffer has been refilled.

Add ANS Forth CORE EXT and FILE word SOURCE-ID.
This commit is contained in:
Daniel C. Sobral 2000-06-12 16:46:28 +00:00
parent d742bdfc76
commit 70e1899762
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=61586
1 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
sys/boot/ficl/words.c
View File

@ -4155,6 +4155,24 @@ static void compareString(FICL_VM *pVM)
}
/**************************************************************************
s o u r c e - i d
** CORE EXT, FILE ( -- 0 | -1 | fileid )
** Identifies the input source as follows:
**
** SOURCE-ID Input source
** --------- ------------
** fileid Text file fileid
** -1 String (via EVALUATE)
** 0 User input device
**************************************************************************/
static void sourceid(FICL_VM *pVM)
{
stackPushINT(pVM->pStack, pVM->sourceID.i);
return;
}
/**************************************************************************
r e f i l l
** CORE EXT ( -- flag )
@ -4170,10 +4188,16 @@ static void compareString(FICL_VM *pVM)
**************************************************************************/
static void refill(FICL_VM *pVM)
{
static int tries = 0;
FICL_INT ret = (pVM->sourceID.i == -1) ? FICL_FALSE : FICL_TRUE;
if (ret && tries == 0) {
tries = 1;
vmThrow(pVM, VM_RESTART);
}
if (tries == 1)
tries = 0;
stackPushINT(pVM->pStack, ret);
if (ret)
vmThrow(pVM, VM_OUTOFTEXT);
return;
}
@ -4775,6 +4799,7 @@ void ficlCompileCore(FICL_DICT *dp)
dictAppendWord(dp, "pick", pick, FW_DEFAULT);
dictAppendWord(dp, "roll", roll, FW_DEFAULT);
dictAppendWord(dp, "refill", refill, FW_DEFAULT);
dictAppendWord(dp, "source-id", sourceid, FW_DEFAULT);
dictAppendWord(dp, "to", toValue, FW_IMMEDIATE);
dictAppendWord(dp, "value", constant, FW_DEFAULT);
dictAppendWord(dp, "\\", commentLine, FW_IMMEDIATE);