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|
uint16 NTYPE_MODULE = 0
uint16 NTYPE_EXPORT = 1
uint16 NTYPE_STRUCT = 2
uint16 NTYPE_TYPE = 3
uint16 NTYPE_ID = 4
uint16 NTYPE_BIN_OP = 5
uint16 NTYPE_PRE_OP = 6
uint16 NTYPE_POST_OP = 7
uint16 NTYPE_FUNCTION = 8
uint16 NTYPE_METHOD = 9
uint16 NTYPE_TLIST = 10
uint16 NTYPE_DLIST = 11
uint16 NTYPE_ELIST = 12
uint16 NTYPE_LITERAL = 13
uint16 NTYPE_KEY_TYPE = 14
uint16 NTYPE_ENUM = 15
uint16 NTYPE_ASM = 998
struct Node {
uint16 _type,
~uint8 data,
utils.Vector sub
}
/; method Node
/; init (uint16 _type, ~uint8 data)
self.data = data
self._type = _type
Node n
self.sub.init(len n)
;/
/; end
_delete(self.data)
/; loop (uint i = 0; i < self.sub.count) [i++]
~Node cur = self.sub.get(i)
cur`.end()
;/
self.sub.end()
;/
;/
/; _get_closing_delim(uint8 ch) [uint8]
/; if (ch == '/' || ch == ';')
return ';'
;; else if (ch == '(')
return ')'
;; else if (ch == '{')
return '}'
;; else if (ch == '[')
return ']'
;/
return 0
;/
/; _advance_check(~utils.File fin, ~Token tok, ~uint8 eq) [bool]
/; if (tok`.eq(eq) == true)
Token tmp = produce_next_token(fin, tok`)
tok`.end()
tok` = tmp
return true
;/
return false
;/
/; _ast_print_err (~Token tok, ~uint8 msg)
_printf(msg)
_printf(":\n\0")
_printf(" \0")
print_token(tok`)
_printf("\n\0")
;/
# Top level directives
/; _ast_import (~utils.File fin, ~Node mod, ~Token first)
/; if (first`._type !== TTYPE_LITRL || first`.data` !== '"')
_ast_print_err(first, "Expected string or import literal after 'import'\0")
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
return
;/
~uint8 rel = utils.unquote_str(first`.data)
utils.File imp = fin`.relative(rel)
_delete(rel)
rel = imp.path.to_cstr('/')
_printf("Importing \0")
_printf(rel)
_printf("\n\0")
_delete(rel)
_ast_file(~imp, mod)
imp.end()
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_asm (~utils.File fin, ~Node mod, ~Token first)
/; if (first`._type !== TTYPE_LITRL || first`.data` !== '"')
_ast_print_err(first, "Expected string literal after 'ast'\0")
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
return
;/
Node an
an.init(NTYPE_ASM, utils.unquote_str(first`.data))
mod`.sub.push(~an)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_struct (~utils.File fin, ~Node mod, ~Token first)
# Identifier check
/; if (first`._type !== TTYPE_USRWD)
_ast_print_err(first, "Expected new identifier for typedef after 'struct'\0")
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
return
;/
# Root struct node
Node sct
sct.init(NTYPE_STRUCT, first`.data)
first` = produce_next_token(fin, first`)
# Check for def list
/; if (first`._type !== TTYPE_DELIM || first`.data` !== '{')
_ast_print_err(first, "Expected new identifier for typedef after 'struct'\0")
mod`.sub.push(~sct)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
return
;/
# Parse deflist and push root node into module
_ast_list_def(fin, mod, first)
mod`.sub.push(~sct)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_decl (~utils.File fin, ~Node mod, ~Token first)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_top_block(~utils.File fin, ~Node mod, ~Token first)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_module(~utils.File fin, ~Node mod, ~Token first)
Token tmp = produce_next_token(fin, first`)
first`.end()
first` = tmp
;/
/; _ast_file (~utils.File fin, ~Node mod)
fin`.open()
Token first = produce_first_token(fin)
/; loop (first._type !== TTYPE_ERR)
/; if (_advance_check(fin, ~first, "import\0") == true)
_ast_import(fin, mod, ~first)
;; else if (_advance_check(fin, ~first, "struct\0") == true)
_ast_struct(fin, mod, ~first)
;; else if (_advance_check(fin, ~first, "asm\0") == true)
_ast_asm(fin, mod, ~first)
;; else if (first.eq("/;\0") == true)
_ast_top_block(fin, mod, ~first)
;; else if (first._type == TTYPE_KEYTP || first._type == TTYPE_USRWD || first.eq("~\0") == true)
_ast_decl(fin, mod, ~first)
;; else
_printf("Expected 'import', 'struct', 'asm', block, or declaration in top level:\n\0")
_printf(" \0")
print_token(first)
_printf("\n\0")
Token tmp = produce_next_token(fin, first)
first.end()
first = tmp
;/
;/
fin`.close()
;/
/; generate_ast (~utils.File fin) [Node]
Node out
utils.Vector v
v.init(1)
out.init(NTYPE_MODULE, v.as_cstr())
_ast_file(fin, ~out)
return out
;/
#
# Print out the AST from a specific node
#
/; print_node_type (~Node n)
/; if (n`._type == NTYPE_MODULE)
_printf("Mod\0")
;; else if (n`._type == NTYPE_EXPORT)
_printf("Exported Module\0")
;; else if (n`._type == NTYPE_STRUCT)
_printf("Struct\0")
;; else if (n`._type == NTYPE_ID)
_printf("ID\0")
;; else if (n`._type == NTYPE_BIN_OP)
_printf("Binary OP\0")
;; else if (n`._type == NTYPE_PRE_OP)
_printf("Pre OP\0")
;; else if (n`._type == NTYPE_POST_OP)
_printf("Post OP\0")
;; else if (n`._type == NTYPE_FUNCTION)
_printf("Function\0")
;; else if (n`._type == NTYPE_METHOD)
_printf("Method\0")
;; else if (n`._type == NTYPE_ASM)
_printf("ASM\0")
;/
;/
/; print_node_head (~Node n)
_printf("{ NODE_TYPE: \0")
print_node_type(n)
_printf(", DATA: \0")
_printf(n`.data)
_printf("\n\0")
;/
/; print_ast_rec(~Node n, uint depth)
/; loop (int i = 0; i < depth) [i++]
_printf(" \0")
;/
print_node_head(n)
/; loop (uint i = 0; i < n`.sub.count) [i++]
~Node s = n`.sub.get(i)
print_ast_rec(s, depth + 1)
;/
/; loop (int i = 0; i < depth) [i++]
_printf(" \0")
;/
_printf("}\n\0")
;/
/; print_ast (~Node n)
print_ast_rec(n, 0)
;/
|
