6502/PLASMA
1
0
Fork 0
mirror of https://github.com/dschmenk/PLASMA.git synced 2025-03-20 03:31:27 +00:00
Code Issues Projects Releases Wiki Activity

Oh the pain of parsing lvalues

Browse Source
This commit is contained in:
dschmenk 2015-01-28 10:47:13 -08:00
parent e261d14467
commit 561459cacf
2 changed files with 38 additions and 29 deletions
src/toolsrc
parse.csb.pla

9
src/toolsrc/parse.c

@ -477,7 +477,7 @@ int parse_value(int rvalue)
/*
* Parse post operand operators.
*/
ref_type = type;
ref_type = type & ~PTR_TYPE;
ref_offset = 0;
while (scan() == OPEN_PAREN_TOKEN
|| scantoken == OPEN_BRACKET_TOKEN
@ -667,8 +667,11 @@ int parse_value(int rvalue)
emit_op(ADD_TOKEN);
ref_offset = 0;
}
if (deref && (ref_type & PTR_TYPE))
(ref_type & BPTR_TYPE) ? emit_lb() : emit_lw();
if (deref)
{
if (ref_type & BPTR_TYPE) emit_lb();
else if (ref_type & WPTR_TYPE) emit_lw();
}
}
else
{

58
src/toolsrc/sb.pla

@ -3181,7 +3181,7 @@ def parse_value(rvalue)
//
// Parse post-ops
//
ref_type = type
ref_type = type & ~PTR_TYPE
ref_offset = 0
while ispostop
when token
@ -3368,10 +3368,10 @@ def parse_value(rvalue)
emit_op($02)
ref_offset = 0
fin
if deref and ref_type & PTR_TYPE
if deref
if ref_type & BPTR_TYPE
emit_lb
else
elsif ref_type & WPTR_TYPE
emit_lw
fin
fin
@ -3613,30 +3613,36 @@ def parse_stmnt
if !parse_expr; return parse_err(@bad_stmnt); fin
nextln
while token <> ENDCASE_TKN
if token == OF_TKN
if !parse_expr; return parse_err(@bad_stmnt); fin
emit_brne(tag_choice)
ctag_resolve(tag_of)
while parse_stmnt
when token
is OF_TKN
if !parse_expr; return parse_err(@bad_stmnt); fin
emit_brne(tag_choice)
ctag_resolve(tag_of)
while parse_stmnt
nextln
loop
tag_of = ctag_new
if prevstmnt <> BREAK_TKN // Fall through to next OF if no break
emit_branch(tag_of)
fin
ctag_resolve(tag_choice)
tag_choice = ctag_new
break
is DEFAULT_TKN
ctag_resolve(tag_of)
tag_of = 0
scan
while parse_stmnt
nextln
loop
if token <> ENDCASE_TKN; return parse_err(@bad_stmnt); fin
break
is EOL_TKN
nextln
loop
tag_of = ctag_new
if prevstmnt <> BREAK_TKN // Fall through to next OF if no break
emit_branch(tag_of)
fin
ctag_resolve(tag_choice)
tag_choice = ctag_new
elsif token == DEFAULT_TKN
ctag_resolve(tag_of)
tag_of = 0
scan
while parse_stmnt
nextln
loop
if token <> ENDCASE_TKN; return parse_err(@bad_stmnt); fin
else
return parse_err(@bad_stmnt)
fin
break
otherwise
return parse_err(@bad_stmnt)
wend
loop
if (tag_of)
ctag_resolve(tag_of)