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Filter: Nicer whitespaces in generated inst-gen.h

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This commit is contained in:
Maria Matejka 2019-07-02 17:59:21 +02:00
parent 550a6488c9
commit 84c58aabd0
1 changed files with 47 additions and 46 deletions
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93
filter/decl.m4
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@ -71,12 +71,12 @@ m4_define(FID_IFCONST, `m4_ifdef([[INST_NEVER_CONSTANT]],[[$2]],[[$1]])')
# to interpreter. This yields a line of code everywhere on the path.
# FID_MEMBER is a macro to help with this task.
m4_define(FID_MEMBER, `m4_dnl
FID_LINE_IN
$1 $2;
FID_STRUCT_IN
$1 $2;
FID_NEW_ARGS
, $1 $2
FID_LINE_IN()m4_dnl
$1 $2;
FID_STRUCT_IN()m4_dnl
$1 $2;
FID_NEW_ARGS()m4_dnl
, $1 $2
FID_NEW_BODY
whati->$2 = $2;
FID_LINEARIZE_BODY
@ -100,10 +100,10 @@ FID_INTERPRET_BODY')
# To achieve this, ARG_ANY must be called before anything writes into
# the instruction line as it moves the instruction pointer forward.
m4_define(ARG_ANY, `
FID_STRUCT_IN
struct f_inst * f$1;
FID_NEW_ARGS
, struct f_inst * f$1
FID_STRUCT_IN()m4_dnl
struct f_inst * f$1;
FID_NEW_ARGS()m4_dnl
, struct f_inst * f$1
FID_NEW_BODY
whati->f$1 = f$1;
for (const struct f_inst *child = f$1; child; child = child->next) {
@ -136,12 +136,12 @@ m4_define(LINEX_, `do {
} while (0)')
m4_define(LINE, `
FID_LINE_IN
const struct f_line * fl$1;
FID_STRUCT_IN
struct f_inst * f$1;
FID_NEW_ARGS
, struct f_inst * f$1
FID_LINE_IN()m4_dnl
const struct f_line * fl$1;
FID_STRUCT_IN()m4_dnl
struct f_inst * f$1;
FID_NEW_ARGS()m4_dnl
, struct f_inst * f$1
FID_NEW_BODY
whati->f$1 = f$1;
FID_DUMP_BODY
@ -166,8 +166,7 @@ m4_define(RESULT_VAL, `FID_HIC(, [[do { res = $1; fstk->vcnt++; } while (0)]],
m4_define(RESULT_VOID, `RESULT_VAL([[ (struct f_val) { .type = T_VOID } ]])')
# Some common filter instruction members
m4_define(SYMBOL, `FID_MEMBER(struct symbol *, sym,
[[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name)')
m4_define(SYMBOL, `FID_MEMBER(struct symbol *, sym, [[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name)')
m4_define(RTC, `FID_MEMBER(struct rtable_config *, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], route table %s, item->rtc->name)')
m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, f1->sa.sa_code != f2->sa.sa_code,,)')
m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, f1->da.ea_code != f2->da.ea_code,,)')
@ -196,8 +195,10 @@ m4_define(ACCESS_RTE, `NEVER_CONSTANT()')
# put into the final file, yet it still can't be written out now as
# every instruction writes to all of these diversions.
# Code wrapping diversion names
m4_define(FID_ZONE, `m4_divert($1) /* $2 for INST_NAME() */')
# Code wrapping diversion names. Here we want an explicit newline
# after the C comment.
m4_define(FID_ZONE, `m4_divert($1) /* $2 for INST_NAME() */
')
m4_define(FID_INST, `FID_ZONE(1, Instruction structure for config)')
m4_define(FID_LINE, `FID_ZONE(2, Instruction structure for interpreter)')
m4_define(FID_NEW, `FID_ZONE(3, Constructor)')
@ -210,25 +211,25 @@ m4_define(FID_SAME, `FID_ZONE(9, Comparison)')
# This macro does all the code wrapping. See inline comments.
m4_define(INST_FLUSH, `m4_ifdef([[INST_NAME]], [[
FID_ENUM m4_dnl Contents of enum fi_code { ... }
INST_NAME(),
FID_ENUM_STR m4_dnl Contents of const char * indexed by enum fi_code
[INST_NAME()] = "INST_NAME()",
FID_INST m4_dnl Anonymous structure inside struct f_inst
struct {
m4_undivert(101)
} i_[[]]INST_NAME();
FID_LINE m4_dnl Anonymous structure inside struct f_line_item
struct {
m4_undivert(107)
} i_[[]]INST_NAME();
FID_NEW m4_dnl Constructor and interpreter code together
FID_ENUM()m4_dnl Contents of enum fi_code { ... }
INST_NAME(),
FID_ENUM_STR()m4_dnl Contents of const char * indexed by enum fi_code
[INST_NAME()] = "INST_NAME()",
FID_INST()m4_dnl Anonymous structure inside struct f_inst
struct {
m4_undivert(101)m4_dnl
} i_[[]]INST_NAME();
FID_LINE()m4_dnl Anonymous structure inside struct f_line_item
struct {
m4_undivert(107)m4_dnl
} i_[[]]INST_NAME();
FID_NEW()m4_dnl Constructor and interpreter code together
FID_HIC(
[[ m4_dnl Public declaration of constructor in H file
[[m4_dnl Public declaration of constructor in H file
struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code
m4_undivert(102)
m4_undivert(102)m4_dnl
);]],
[[ m4_dnl The one case in The Big Switch inside interpreter
[[m4_dnl The one case in The Big Switch inside interpreter
case INST_NAME():
#define whati (&(what->i_]]INST_NAME()[[))
m4_ifelse(m4_eval(INST_INVAL() > 0), 1, [[if (fstk->vcnt < INST_INVAL()) runtime("Stack underflow"); fstk->vcnt -= INST_INVAL(); ]])
@ -236,7 +237,7 @@ m4_undivert(102)
#undef whati
break;
]],
[[ m4_dnl Constructor itself
[[m4_dnl Constructor itself
struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code
m4_undivert(102)
)
@ -259,10 +260,10 @@ m4_undivert(102)
}
]])
FID_DUMP_CALLER m4_dnl Case in another big switch used in instruction dumping (debug)
FID_DUMP_CALLER()m4_dnl Case in another big switch used in instruction dumping (debug)
case INST_NAME(): f_dump_line_item_]]INST_NAME()[[(item, indent + 1); break;
FID_DUMP m4_dnl The dumper itself
FID_DUMP()m4_dnl The dumper itself
m4_ifdef([[FID_DUMP_BODY_EXISTS]],
[[static inline void f_dump_line_item_]]INST_NAME()[[(const struct f_line_item *item_, const int indent)]],
[[static inline void f_dump_line_item_]]INST_NAME()[[(const struct f_line_item *item UNUSED, const int indent UNUSED)]])
@ -273,7 +274,7 @@ m4_undivert(104)
#undef item
}
FID_LINEARIZE m4_dnl The linearizer
FID_LINEARIZE()m4_dnl The linearizer
case INST_NAME(): {
#define whati (&(what->i_]]INST_NAME()[[))
#define item (&(dest->items[pos].i_]]INST_NAME()[[))
@ -285,7 +286,7 @@ case INST_NAME(): {
break;
}
FID_SAME m4_dnl This code compares two f_line"s while reconfiguring
FID_SAME()m4_dnl This code compares two f_line"s while reconfiguring
case INST_NAME():
#define f1 (&(f1_->i_]]INST_NAME()[[))
#define f2 (&(f2_->i_]]INST_NAME()[[))
@ -294,7 +295,7 @@ m4_undivert(106)
#undef f2
break;
m4_divert(-1)FID_FLUSH(101,200) m4_dnl And finally this flushes all the unused diversions
m4_divert(-1)FID_FLUSH(101,200)m4_dnl And finally this flushes all the unused diversions
]])')
m4_define(INST, `m4_dnl This macro is called on beginning of each instruction.
@ -302,7 +303,7 @@ INST_FLUSH()m4_dnl First, old data is flushed
m4_define([[INST_NAME]], [[$1]])m4_dnl Then we store instruction name,
m4_define([[INST_INVAL]], [[$2]])m4_dnl instruction input value count
m4_undefine([[INST_NEVER_CONSTANT]])m4_dnl and reset NEVER_CONSTANT trigger.
FID_INTERPRET_BODY() m4_dnl By default, every code is interpreter code.
FID_INTERPRET_BODY()m4_dnl By default, every code is interpreter code.
')
# 3) Final preparation
@ -480,7 +481,7 @@ FID_WR_PUT(9)
FID_WR_DIRECT(H)
/* Filter instruction codes */
enum f_instruction_code {
FID_WR_PUT(4)
FID_WR_PUT(4)m4_dnl
} PACKED;
/* Filter instruction structure for config */
@ -490,7 +491,7 @@ struct f_inst {
int size; /* How many instructions are underneath */
int lineno; /* Line number */
union {
FID_WR_PUT(1)
FID_WR_PUT(1)m4_dnl
};
};
@ -500,7 +501,7 @@ struct f_line_item {
enum f_instruction_flags flags; /* Flags, instruction-specific */
uint lineno; /* Where */
union {
FID_WR_PUT(2)
FID_WR_PUT(2)m4_dnl
};
};