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#
include
"
parser.h
"
namespace
cashew
{
//
common strings
IString
TOPLEVEL
(
"
toplevel
"
),
DEFUN(
"
defun
"
),
BLOCK(
"
block
"
),
STAT(
"
stat
"
),
ASSIGN(
"
assign
"
),
NAME(
"
name
"
),
VAR(
"
var
"
),
CONST(
"
const
"
),
CONDITIONAL(
"
conditional
"
),
BINARY(
"
binary
"
),
RETURN(
"
return
"
),
IF(
"
if
"
),
ELSE(
"
else
"
),
WHILE(
"
while
"
),
DO(
"
do
"
),
FOR(
"
for
"
),
SEQ(
"
seq
"
),
SUB(
"
sub
"
),
CALL(
"
call
"
),
NUM(
"
num
"
),
LABEL(
"
label
"
),
BREAK(
"
break
"
),
CONTINUE(
"
continue
"
),
SWITCH(
"
switch
"
),
STRING(
"
string
"
),
INF(
"
inf
"
),
NaN(
"
nan
"
),
TEMP_RET0(
"
tempRet0
"
),
UNARY_PREFIX(
"
unary-prefix
"
),
UNARY_POSTFIX(
"
unary-postfix
"
),
MATH_FROUND(
"
Math_fround
"
),
SIMD_FLOAT32X4(
"
SIMD_Float32x4
"
),
SIMD_FLOAT64X2(
"
SIMD_Float64x2
"
),
SIMD_INT8X16(
"
SIMD_Int8x16
"
),
SIMD_INT16X8(
"
SIMD_Int16x8
"
),
SIMD_INT32X4(
"
SIMD_Int32x4
"
),
PLUS(
"
+
"
),
MINUS(
"
-
"
),
OR(
"
|
"
),
AND(
"
&
"
),
XOR(
"
^
"
),
L_NOT(
"
!
"
),
B_NOT(
"
~
"
),
LT(
"
<
"
),
GE(
"
>=
"
),
LE(
"
<=
"
),
GT(
"
>
"
),
EQ(
"
==
"
),
NE(
"
!=
"
),
DIV(
"
/
"
),
MOD(
"
%
"
),
MUL(
"
*
"
),
RSHIFT(
"
>>
"
),
LSHIFT(
"
<<
"
),
TRSHIFT(
"
>>>
"
),
TEMP_DOUBLE_PTR(
"
tempDoublePtr
"
),
HEAP8(
"
HEAP8
"
),
HEAP16(
"
HEAP16
"
),
HEAP32(
"
HEAP32
"
),
HEAPF32(
"
HEAPF32
"
),
HEAPU8(
"
HEAPU8
"
),
HEAPU16(
"
HEAPU16
"
),
HEAPU32(
"
HEAPU32
"
),
HEAPF64(
"
HEAPF64
"
),
F0(
"
f0
"
),
EMPTY(
"
"
),
FUNCTION(
"
function
"
),
OPEN_PAREN(
"
(
"
),
OPEN_BRACE(
"
[
"
),
OPEN_CURLY(
"
{
"
),
CLOSE_CURLY(
"
}
"
),
COMMA(
"
,
"
),
QUESTION(
"
?
"
),
COLON(
"
:
"
),
CASE(
"
case
"
),
DEFAULT(
"
default
"
),
DOT(
"
dot
"
),
PERIOD(
"
.
"
),
NEW(
"
new
"
),
ARRAY(
"
array
"
),
OBJECT(
"
object
"
),
THROW(
"
throw
"
),
SET(
"
=
"
);
IStringSet
keywords
(
"
var const function if else do while for break continue return switch case default throw try catch finally true false null new
"
);
const
char
*
OPERATOR_INITS
=
"
+-*/%<>&^|~=!,?:.
"
,
*
SEPARATORS
=
"
([;{}
"
;
int
MAX_OPERATOR_SIZE
=
3
;
std::vector<OperatorClass> operatorClasses;
static
std::vector<std::unordered_map<IString,
int
>> precedences;
//
op, type => prec
struct
Init
{
Init
() {
//
operators, rtl, type
operatorClasses.
push_back
(
OperatorClass
(
"
.
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
! ~ + -
"
,
true
, OperatorClass::Prefix));
operatorClasses.
push_back
(
OperatorClass
(
"
* / %
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
+ -
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
<< >> >>>
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
< <= > >=
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
== !=
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
&
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
^
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
|
"
,
false
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
? :
"
,
true
, OperatorClass::Tertiary));
operatorClasses.
push_back
(
OperatorClass
(
"
=
"
,
true
, OperatorClass::Binary));
operatorClasses.
push_back
(
OperatorClass
(
"
,
"
,
true
, OperatorClass::Binary));
precedences.
resize
(OperatorClass::Tertiary +
1
);
for
(
size_t
prec =
0
; prec < operatorClasses.
size
(); prec++) {
for
(
auto
curr : operatorClasses[prec].
ops
) {
precedences[operatorClasses[prec].
type
][curr] = prec;
}
}
}
};
Init init;
int
OperatorClass::getPrecedence
(Type type, IString op) {
return
precedences[type][op];
}
bool
OperatorClass::getRtl
(
int
prec) {
return
operatorClasses[prec].
rtl
;
}
bool
isIdentInit
(
char
x) {
return
(x >=
'
a
'
&& x <=
'
z
'
) || (x >=
'
A
'
&& x <=
'
Z
'
) || x ==
'
_
'
|| x ==
'
$
'
; }
bool
isIdentPart
(
char
x) {
return
isIdentInit
(x) || (x >=
'
0
'
&& x <=
'
9
'
); }
}
//
namespace cashew
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