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authorpommicket <pommicket@gmail.com>2022-01-10 12:23:56 -0500
committerpommicket <pommicket@gmail.com>2022-01-10 12:23:56 -0500
commitf706d3903aadeaa16087c1f2cc1e452beab7ad2b (patch)
tree660499c62b2e60483d354dc311315c798a1fc78d
parenta8a30458bdf24fc664ed76c5247412bd39fc067e (diff)
fix line numbering with fmacro invocations across multiple lines
-rw-r--r--05/main.c14
-rw-r--r--05/preprocess.b56
2 files changed, 47 insertions, 23 deletions
diff --git a/05/main.c b/05/main.c
index 2bf29ec..0aae453 100644
--- a/05/main.c
+++ b/05/main.c
@@ -1,8 +1,6 @@
-__TIME__
-__DATE__
-__STDC__
-__LINE__
-__FILE__
-#line 7 "aah.c"
-__LINE__
-__FILE__
+#define f(x) x x
+
+f(2
+3)
+
+#pragma
diff --git a/05/preprocess.b b/05/preprocess.b
index 195890f..7dea736 100644
--- a/05/preprocess.b
+++ b/05/preprocess.b
@@ -506,7 +506,7 @@ function translation_phase_4
pptoken_copy_and_advance(&in, &out)
goto phase4_line
:phase4_try_replacements
- macro_replacement(filename, line_number, &in, &out)
+ macro_replacement(filename, &line_number, &in, &out)
goto process_pptoken
:pp_directive
pptoken_skip(&in) ; skip #
@@ -769,6 +769,25 @@ function look_up_function_macro
argument name
return look_up_macro(function_macros, name)
+; replace macros at *p_in until terminator is reached
+;function macro_replacement_to_terminator
+; argument filename
+; argument p_line_number
+; argument p_in
+; argument p_out
+; argument terminator
+; local in
+; local out
+; in = *8p_in
+; out = *8p_out
+; :macro_replacement_to_terminator_loop
+; if *1in == terminator goto macro_replacement_to_terminator_loop_end
+; macro_replacement(filename, p_line_number, &in, &out)
+; :macro_replacement_to_terminator_loop_end
+; *8p_in = in
+; *8p_out = out
+; return
+
; @NONSTANDARD:
; Macro replacement isn't handled properly in the following ways:
; - function-like macros are not evaluated if the ( is not on the same line as the name of the macro
@@ -784,9 +803,11 @@ function look_up_function_macro
; replace pptoken(s) at *p_in into *p_out, advancing both
; NOTE: if *p_in starts with a function-like macro replacement, it is replaced fully,
; otherwise this function only reads 1 token from *p_in
+; NOTE: a pointer to the line number is passed in because function-like macro invocations
+; can span across multiple lines
function macro_replacement
argument filename
- argument line_number
+ argument p_line_number
argument p_in
argument p_out
; "banned" macros prevent #define x x from being a problem
@@ -855,7 +876,7 @@ function macro_replacement
pptoken_skip(&in) ; skip macro
:objreplace_loop
if *1p == 255 goto done_replacement
- macro_replacement(filename, line_number, &p, &out)
+ macro_replacement(filename, p_line_number, &p, &out)
goto objreplace_loop
:fmacro_replacement
@@ -889,7 +910,7 @@ function macro_replacement
; store the arguments (separated by 255-characters)
p = arguments
:fmacro_arg_loop
- b = fmacro_arg_end(filename, line_number, in)
+ b = fmacro_arg_end(filename, p_line_number, in)
b -= in
memcpy(p, in, b) ; copy the argument to its proper place
p += b
@@ -925,7 +946,7 @@ function macro_replacement
; stringify operator
p += 1 ; skip null separator following #
- q = fmacro_get_arg(filename, line_number, arguments, *1p)
+ q = fmacro_get_arg(filename, p_line_number, arguments, *1p)
*1fmacro_out = '"
fmacro_out += 1
:fmacro_stringify_loop
@@ -979,7 +1000,7 @@ function macro_replacement
fmacro_out = fmacro_out_start
:frescan_loop
if *1fmacro_out == 0 goto frescan_loop_end
- macro_replacement(filename, line_number, &fmacro_out, &out)
+ macro_replacement(filename, p_line_number, &fmacro_out, &out)
goto frescan_loop
:frescan_loop_end
@@ -993,15 +1014,15 @@ function macro_replacement
q = p - 2 ; skip these characters: null separator, second '#'
if *1q == '# goto fmacro_argument_no_rescan ; this argument is immediately preceded by ##
; write argument to *fmacro_out, performing any necessary macro substitutions
- q = fmacro_get_arg(filename, line_number, arguments, *1p)
+ q = fmacro_get_arg(filename, p_line_number, arguments, *1p)
:fmacro_arg_replace_loop
- macro_replacement(filename, line_number, &q, &fmacro_out)
+ macro_replacement(filename, p_line_number, &q, &fmacro_out)
if *1q != 255 goto fmacro_arg_replace_loop
p += 2 ; skip arg idx & null separator
goto freplace_loop
:fmacro_argument_no_rescan
- q = fmacro_get_arg(filename, line_number, arguments, *1p)
+ q = fmacro_get_arg(filename, p_line_number, arguments, *1p)
fmacro_out = memccpy(fmacro_out, q, 255)
*1fmacro_out = 0
p += 2 ; skip arg idx & null separator
@@ -1019,7 +1040,7 @@ function macro_replacement
return
:empty_fmacro_invocation
- compile_error(filename, line_number, .str_empty_fmacro_invocation)
+ compile_error(filename, *8p_line_number, .str_empty_fmacro_invocation)
:str_empty_fmacro_invocation
string No arguments provided to function-like macro.
byte 0
@@ -1036,7 +1057,7 @@ function macro_replacement
goto done_replacement
:handle___LINE__
pptoken_skip(&in)
- p = itos(line_number)
+ p = itos(*8p_line_number)
out = strcpy(out, p)
out += 1
goto done_replacement
@@ -1071,7 +1092,7 @@ function macro_replacement
function fmacro_get_arg
argument filename
- argument line_number
+ argument p_line_number
argument arguments
argument arg_idx
:fmacro_argfind_loop
@@ -1084,14 +1105,14 @@ function fmacro_get_arg
:fmacro_arg_found
return arguments
:fmacro_too_few_arguments
- compile_error(filename, line_number, .str_fmacro_too_few_arguments)
+ compile_error(filename, *8p_line_number, .str_fmacro_too_few_arguments)
:str_fmacro_too_few_arguments
string Too few arguments to function-like macro.
byte 0
function fmacro_arg_end
argument filename
- argument line_number
+ argument p_line_number
argument in
local bracket_depth
bracket_depth = 1
@@ -1099,6 +1120,7 @@ function fmacro_arg_end
if *1in == 0 goto fmacro_missing_closing_bracket
if *1in == '( goto fmacro_arg_opening_bracket
if *1in == ') goto fmacro_arg_closing_bracket
+ if *1in == 10 goto fmacro_arg_newline
if *1in == ', goto fmacro_arg_potential_end
pptoken_skip(&in)
goto fmacro_arg_end_loop
@@ -1115,12 +1137,16 @@ function fmacro_arg_end
if bracket_depth == 0 goto fmacro_arg_end_loop_end
pptoken_skip(&in)
goto fmacro_arg_end_loop
+ :fmacro_arg_newline
+ *8p_line_number += 1
+ pptoken_skip(&in)
+ goto fmacro_arg_end_loop
:fmacro_arg_end_loop_end
return in
:fmacro_missing_closing_bracket
- compile_error(filename, line_number, .str_missing_closing_bracket)
+ compile_error(filename, *8p_line_number, .str_missing_closing_bracket)
function print_object_macros
print_macros(object_macros)