incomplete error message by CST when encountering a parsing error

[Roland Haas]

I am trying to stress test the presync read/write parser and code generator code. As such I am construction a thorn with bad input. Unfortunately using this schedule.cclfile, which may contain actually incorrect input:

# Schedule definitions for thorn TestReadWrite

STORAGE: Var1[2] Var2 TestGroup[3] UnusedVar
STOREAGE: results

SCHEDULE TestReadWrite_TestC_A AT initial
{
  WRITE: groupvar
  WRITE: var1

  LANG: C
} "Test Read / Write Statements"

SCHEDULE TestReadWrite_TestC_B AT initial AFTER TestReadWrite_TestC_A
{
  WRITE: var2

  LANG: C
} "Test Read / Write Statements"

# check that union of variables is used when constructing macro
SCHEDULE TestReadWrite_TestC_B IN GroupThatDoesNotExist
{
  WRITE: groupvar
  READ: var1

  LANG: C
} "Test Read / Write Statements"

SCHEDULE TestReadWrite_TestC AT initial AFTER TestReadWrite_TestC_B
{
  WrITE: varpastlevelc, grouppastlevelc
  ReAD: Var1, Var1_p
  READ: var2
  READ: groupvar_pp
  WrITE: VarCurrentLevelC GroupCurrentLevelC

  LANG: C
} "Record results in grid scalars"

I get the following error message from CST:

Parsing schedule files...
   Cactus
          0 schedule blocks.
   TestReadWrite
Parse Error at /home/rhaas/postdoc/gr/cactus/ET_trunk/repos/flesh/lib/sbin/CSTUtils.pl line 966.
        main::parse_ccl(Grammar=HASH(0x55ffc79624e8), "sched", "/home/rhaas/postdoc/gr/cactus/ET_trunk/arrangements/CactusTes"..., "/home/rhaas/postdoc/gr/cactus/ET_trunk/repos/flesh/lib/sbin/."...) called at /home/rhaas/postdoc/gr/cactus/ET_trunk/repos/flesh/lib/sbin/ScheduleParser.pl line 95
        main::create_schedule_database("TestReadWrite", "/home/rhaas/postdoc/gr/cactus/ET_trunk/arrangements/CactusTes"..., "Cactus", "/home/rhaas/postdoc/gr/cactus/ET_trunk/src") called at /home/rhaas/postdoc/gr/cactus/ET_trunk/lib/sbin/CST line 168
CST ERROR IN FILE '/home/rhaas/postdoc/gr/cactus/ET_trunk/arrangements/CactusTest/TestReadWrite/schedule.ccl' make[1]: *** [/home/rhaas/postdoc/gr/cactus/ET_trunk/lib/make/make.configuration:213: /home/rhaas/postdoc/gr/cactus/ET_trunk/configs/testrdwr/config-data/make.thornlist] Error 255

which is not very helpful since it does not seem to give any indication what (or even what line) caused the parse error.

[Roland Haas]

One thing that is wrong is obviously the use of STOREAGE instead of STORAGE, though fixing that doe s not yet make schedule.ccl parse (or produce a more helpful error message).
Using WRITES and READS and using a command “,” in between the variables in the lists lets the file parse.

Note that this ticket is not about schedule.ccl not parsing but about the fact that the produced error message is not helpful in finding out what is wrong with it.

[Roland Haas]

Seems fixed in git hash b77c8595 "Report syntax errors properly" of cactus.