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struct Function {
~uint8 name,
utils.Vector
inputs,
outputs,
~parse.Node _up,
bool m
}
/; method Function
/; init (~parse.Node n)
self.name = utils.strcpy(n`.data)
self._up = n
self.m = false
Var v
self.inputs.init(len v)
self.outputs.init(len v)
;/
/; _resolve_dlist (~Module parent, ~parse.Node dl)
~parse.Node tn = NULL
~parse.Node n
int reg = 1
int stack_up = 0
/; loop (int i = 0; i < dl`.sub.count) [i++]
n = dl`.sub.get(i)
/; if (n`._type == parse.NTYPE_TYPE)
tn = n
;; else if (n`._type == parse.NTYPE_ID)
/; if (tn == NULL)
_printf("Identifier declared in parameter list before any type was found!\n\0")
return
;/
Var p
p.init(tn, n)
p._resolve_type(parent)
# TODO: This is wrong
/; if (p.regable() == true && reg < 7)
p.loc = reg
reg++
;; else
p.loc = 0 - 1
p.offset = stack_up
stack_up = stack_up + p.actual_size()
;/
self.inputs.push(~p)
;/
;/
;/
/; _resolve_tlist (~Module parent, ~parse.Node tl)
~parse.Node n
parse.Node dummy
dummy.data = "### OUTPUT ###\0"
int reg = 1
int stack = 0
/; loop (int i = 0; i < tl`.sub.count) [i++]
n = tl`.sub.get(i)
/; if (n`._type == parse.NTYPE_TYPE)
# TODO: also wrong
Var r
r.init(n, ~dummy)
r._resolve_type(parent)
/; if (r.regable() == true && reg < 7)
r.loc = reg
/; if (reg > 4)
r.loc = r.loc + 4
;/
reg++
;; else
r.loc = 0 - 1
r.offset = stack
stack = stack + r.actual_size()
;/
self.outputs.push(~r)
;/
;/
;/
/; _resolve_type (~Module parent)
~parse.Node _up = self._up
/; if (_up`.sub.count < 1)
return
;/
~parse.Node lst = _up`.sub.get(0)
/; if (lst`._type == parse.NTYPE_DLIST)
self._resolve_dlist(parent, lst)
/; if (_up`.sub.count > 1)
lst = _up`.sub.get(1)
;/
;/
/; if (lst`._type == parse.NTYPE_TLIST)
self._resolve_tlist(parent, lst)
;/
;/
/; _compute_scope_vars(~Scope s)
~Var in
/; loop (int i = 0; i < self.inputs.count) [i++]
in = self.inputs.get(i)
s`.mk_aware(in)
;/
int i = self._first_stmt_off()
/; if (i < 0)
return
;/
~parse.Node _up = self._up
~parse.Node n
/; loop (i < _up`.sub.count) [i++]
n = _up`.sub.get(i)
/; if (n`._type == parse.NTYPE_DECL)
s`.mk_aware_node(n)
;; else
s`.precheck_stmt(n)
;/
;/
;/
/; _build_func(~Module parent, ~CompBuf cb) [Scope]
Scope out
out.init(parent, cb, self.name)
out.parent = NULL
/; if (parent`.e == true)
# Add to the global exports if the parent is exported
~uint8 bl = out.base_label()
cb`.add_h("global \0")
cb`.add_h(bl)
cb`.add_h("\n\0")
_delete(bl)
;/
# Write label and opening
out.place_base_label()
cb`.add_c(" push rbp\n\0")
cb`.add_c(" lea rbp, [rsp + 8]\n\0")
cb`.add_c(" push r10\n\0")
cb`.add_c(" push r11\n\0")
cb`.add_c(" push r12\n\0")
cb`.add_c(" push r13\n\0")
cb`.add_c(" push r14\n\0")
cb`.add_c(" push r15 ; scope init\n\n\0")
self._compute_scope_vars(~out)
# Add all params to the scope
~Var in
/; loop (int i = 0; i < self.inputs.count) [i++]
in = self.inputs.get(i)
out.mk_set_var(in)
;/
return out
;/
/; _end_func(~Scope scope, ~CompBuf cb)
cb`.add_c("\n\0")
scope`.place_end_label()
cb`.add_c(" lea rsp, [rbp - 56]\n\0")
cb`.add_c(" pop r15\n\0")
cb`.add_c(" pop r14\n\0")
cb`.add_c(" pop r13\n\0")
cb`.add_c(" pop r12\n\0")
cb`.add_c(" pop r11\n\0")
cb`.add_c(" pop r10\n\0")
cb`.add_c(" pop rbp\n\0")
cb`.add_c(" ret ; scope end\n\n\n\0")
scope`.end()
;/
/; _first_stmt_off [int]
int i = 0
~parse.Node _up = self._up
/; if (_up`.sub.count < 1)
return i - 1
;/
~parse.Node n = _up`.sub.get(i)
/; if (n`._type == parse.NTYPE_DLIST)
i++
/; if (_up`.sub.count > 1)
n = _up`.sub.get(1)
;/
;/
/; if (n`._type == parse.NTYPE_TLIST)
i++
;/
return i
;/
/; _compile (~Module parent, ~CompBuf cb)
# Sanity check
int i = self._first_stmt_off()
# Create scope
Scope fscope = self._build_func(parent, cb)
/; if (i !< 0)
self._compile_statements(~fscope, i)
;/
# Compile and then end scope
self._end_func(~fscope, cb)
;/
#
# Compiling individual statements
#
/; _compile_statements (~Scope s, int off)
~parse.Node _up = self._up
~parse.Node n = NULL
/; loop (off < _up`.sub.count) [off++]
n = _up`.sub.get(off)
/; if (n`._type == parse.NTYPE_FLOW_CONTROL)
self._compile_flow_control(s, n)
;; else if (n`._type == parse.NTYPE_ASM)
s`.cb`.add_c(" \0")
s`.cb`.add_c(n`.data)
s`.cb`.add_c(" ; User defined asm\n\0")
;/
;/
;/
# Should handle break, continue, and return
/; _compile_flow_control (~Scope s, ~parse.Node n)
/; if (utils.strcmp(n`.data, "return\0") == true)
# Compute value and return
self._compile_value(s, n)
;/
;/
# Should handle computing a value, delegate to other funcs when needed
/; _compile_value (~Scope s, ~parse.Node n)
;/
/; _print (int idt)
_indent(idt)
_printf("{ Function : \0")
_printf(self.name)
_printf("\n\0")
_indent(idt + 1)
_printf("inputs:\n\0")
~Var prtv
/; loop (int i = 0; i < self.inputs.count) [i++]
prtv = self.inputs.get(i)
prtv`._print(idt + 2)
;/
_indent(idt + 1)
_printf("outputs:\n\0")
/; loop (int i = 0; i < self.outputs.count) [i++]
prtv = self.outputs.get(i)
prtv`._print(idt + 2)
;/
_indent(idt)
_printf("}\n\0")
;/
/; end
_delete(self.name)
~Var v
/; loop (int i = 0; i < self.inputs.count) [i++]
v = self.inputs.get(i)
v`.end()
;/
self.inputs.end()
/; loop (int i = 0; i < self.outputs.count) [i++]
v = self.outputs.get(i)
v`.end()
;/
self.outputs.end()
;/
;/
|
