Hi All, there is a bug with `#include' in the new parser (only for orc
file or CsInstruments section in the csd file). The last line of a
file included through `#include' is analyzed two times by the lexer.
For example:
;; foo.txt
prints "=== FIRST LINE ===\n"
prints "=== SECOND LINE ===\n"
prints "=== LAST LINE ===\n"
#include "foo.txt"
instr 1
endin
i1 0 0
Tested with Csound 5.14, git commit 78d3db0ff720c7feec3914a20850aeeb75c084ef
uname -a
Linux pantera 2.6.33.7.2-rt30 #2 SMP PREEMPT RT Mon Oct 24 12:33:25 CEST 2011
x86_64 AMD Phenom(tm) II X6 1090T Processor AuthenticAMD GNU/Linux
csound -n include_test.csd
...
********************
* USING NEW PARSER *
********************
Testing...
...
...
=== FIRST LINE ===
=== SECOND LINE ===
=== LAST LINE ===
=== LAST LINE ===
orch now loaded
...
The cause is `PARM->buffer' (or yyextra->buffer) in csound_orc.l. The
scanner works well in the buffer state "yypushed" in the `do_include'
function, but after the `yypop_buffer_state', in the <> rule,
PARM->buffer is still 'prints "=== LAST LINE ===\n"' and PARM->lBuffer
is 31 (the lenght of PARM->buffer), so this buffered line will be
analyzed again (in `get_next_char' used by `YY_INPUT'). A temporary
solution is
diff -ur csound5~/Engine/csound_orc.l csound5/Engine/csound_orc.l
--- csound5~/Engine/csound_orc.l 2011-11-08 13:51:46.000000000 +0100
+++ csound5/Engine/csound_orc.l 2011-11-12 17:36:27.000000000 +0100
@@ -432,6 +432,8 @@
yypop_buffer_state(yyscanner);
if ( !YY_CURRENT_BUFFER ) yyterminate();
printf("End of input; popping to %p\n", YY_CURRENT_BUFFER);
+ if (PARM->isInclude)
+ PARM->lBuffer = PARM->isInclude = 0;
n = PARM->alt_stack[--PARM->macro_stack_ptr].n;
printf("n=%d\n", n);
if (n!=0) {
@@ -530,6 +532,7 @@
}
PARM->alt_stack[PARM->macro_stack_ptr].n = 0;
PARM->alt_stack[PARM->macro_stack_ptr++].s = NULL;
+ PARM->isInclude = 1;
yypush_buffer_state(yy_create_buffer( yyin, YY_BUF_SIZE, yyscanner), yyscanner);
}
diff -ur csound5~/Engine/parse_param.h csound5/Engine/parse_param.h
--- csound5~/Engine/parse_param.h 2011-11-08 13:51:46.000000000 +0100
+++ csound5/Engine/parse_param.h 2011-11-12 17:36:45.000000000 +0100
@@ -30,6 +30,7 @@
unsigned int macro_stack_ptr;
char *xstrbuff;
int xstrptr,xstrmax;
+ unsigned char isInclude;
} PARSE_PARM;
#define lMaxBuffer (1000)
The `if' condition is necessary, otherwise the $NAME macro doesn't work.
This is my first message, my English is *underground* but I know how to say
Thank you very much for Csound
tito
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