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|
let Node = struct {
type: i64,
data: *void,
};
let NODE_PROGRAM = 1;
let NODE_STATEMENT = 2;
let NODE_ASSIGNMENT_STATEMENT = 3;
let NODE_IMPORT_DECLARATION = 4;
let NODE_FUNCTION_CALL_STATEMENT = 5;
let NODE_IF_STATEMENT = 6;
let NODE_WHILE_STATEMENT = 7;
let NODE_EQUALITY_EXPRESSION = 8;
let NODE_ADDITIVE_EXPRESSION = 9;
let NODE_MULTIPLICATIVE_EXPRESSION = 10;
let NODE_UNARY_EXPRESSION = 11;
let NODE_POSTFIX_EXPRESSION = 12;
let NODE_PRIMARY_EXPRESSION_NUMBER = 13;
let NODE_PRIMARY_EXPRESSION_BOOLEAN = 14;
let NODE_PRIMARY_EXPRESSION_NULL = 15;
let NODE_PRIMARY_EXPRESSION_CHAR = 16;
let NODE_PRIMARY_EXPRESSION_STRING = 17;
let NODE_PRIMARY_EXPRESSION_IDENTIFIER = 18;
let NODE_FUNCTION_DEFINITION = 19;
let NODE_STRUCT_INSTANCIATION = 20;
let NODE_FIELD_ACCESS = 21;
let NODE_TYPE_SIMPLE_TYPE = 22;
let NODE_TYPE_FUNCTION_TYPE = 23;
let NODE_TYPE_POINTER_TYPE = 24;
let NODE_TYPE_STRUCT_TYPE = 25;
let NODE_RETURN_STATEMENT = 26;
let NODE_CAST_STATEMENT = 27;
let NODE_SIZEOF_STATEMENT = 28;
let NODE_BREAK_STATEMENT = 29;
let NODE_CONTINUE_STATEMENT = 30;
let EQUALITY_EXPRESSION_TYPE_EQ = 0;
let EQUALITY_EXPRESSION_TYPE_NE = 1;
let EQUALITY_EXPRESSION_TYPE_GE = 2;
let EQUALITY_EXPRESSION_TYPE_LE = 3;
let EQUALITY_EXPRESSION_TYPE_LT = 4;
let EQUALITY_EXPRESSION_TYPE_GT = 5;
let MULTIPLICATIVE_EXPRESSION_TYPE_MUL = 0;
let MULTIPLICATIVE_EXPRESSION_TYPE_DIV = 1;
let MULTIPLICATIVE_EXPRESSION_TYPE_MOD = 2;
let UNARY_EXPRESSION_TYPE_NOT = 0;
let UNARY_EXPRESSION_TYPE_MINUS = 1;
let UNARY_EXPRESSION_TYPE_STAR = 2;
let NODE_PROGRAM_DATA = struct {
statements: *Node,
statements_len: i64,
};
let NODE_STATEMENT_DATA = struct {
statement: *Node,
};
let NODE_ASSIGNMENT_STATEMENT_DATA = struct {
is_declaration: bool,
is_dereference: bool,
lhs: *Node,
rhs: *Node,
};
let NODE_IMPORT_DECLARATION_DATA = struct {
filename: *i8,
program: *Node,
};
let NODE_FUNCTION_CALL_STATEMENT_DATA = struct {
expression: *Node,
arguments: *Node,
arguments_len: i64,
};
let NODE_IF_STATEMENT_DATA = struct {
condition: *Node,
statements: *Node,
statements_len: i64,
};
let NODE_WHILE_STATEMENT_DATA = struct {
condition: *Node,
statements: *Node,
statements_len: i64,
};
let NODE_EQUALITY_EXPRESSION_DATA = struct {
lhs: *Node,
rhs: *Node,
typ: i64,
};
let NODE_ADDITIVE_EXPRESSION_DATA = struct {
addition: bool,
lhs: *Node,
rhs: *Node,
};
let NODE_MULTIPLICATIVE_EXPRESSION_DATA = struct {
lhs: *Node,
rhs: *Node,
typ: i64,
};
let NODE_UNARY_EXPRESSION_DATA = struct {
typ: i64,
expression: *Node,
};
let NODE_POSTFIX_EXPRESSION_DATA = struct {
lhs: *Node,
rhs: *Node,
};
let NODE_PRIMARY_EXPRESSION_NUMBER_DATA = struct {
value: i64,
};
let NODE_PRIMARY_EXPRESSION_BOOLEAN_DATA = struct {
value: bool,
};
let NODE_PRIMARY_EXPRESSION_CHAR_DATA = struct {
value: i8,
};
let NODE_PRIMARY_EXPRESSION_STRING_DATA = struct {
value: *i8,
};
let NODE_PRIMARY_EXPRESSION_IDENTIFIER_DATA = struct {
name: *i8,
type: *Node,
};
let NODE_FUNCTION_DEFINITION_DATA = struct {
statements: *Node,
statements_len: i64,
parameters: *Node,
parameters_len: i64,
retur_type: *Node,
};
let NODE_STRUCT_INSTANCIATION_DATA = struct {
typ: *i8,
};
let NODE_FIELD_ACCESS_DATA = struct {
expression: *Node,
name: *i8,
};
let NODE_TYPE_SIMPLE_TYPE_DATA = struct {
name: *i8,
underlying_type: *Node,
};
let NODE_TYPE_FUNCTION_TYPE_DATA = struct {
parameters: *Node,
parameters_len: i64,
retur_type: *Node,
};
let NODE_TYPE_POINTER_TYPE_DATA = struct {
type: *Node,
};
let NODE_TYPE_STRUCT_TYPE_DATA = struct {
fields: *Node,
fields_len: i64,
};
let NODE_RETURN_STATEMENT_DATA = struct {
expression: *Node,
};
let NODE_CAST_STATEMENT_DATA = struct {
typ: *Node,
expression: *Node,
};
let NODE_SIZEOF_STATEMENT_DATA = struct {
typ: *Node,
};
let parser = struct {
tokens: *token,
tokens_len: i64,
offset: i64,
arena: *arena,
};
let parser_init = (ts: *token, ts_len: i64, ar: *arena) => *parser {
let p = cast(*parser, arena_alloc(ar, sizeof(parser)));
(*p).tokens = ts;
(*p).tokens_len = ts_len;
(*p).offset = 0;
(*p).arena = ar;
return p;
};
let create_node = (p: *parser, n: Node) => *Node {
let res = cast(*Node, arena_alloc((*p).arena, 100));
*res = n;
return res;
};
/* Statement ::= (AssignmentStatement | ImportDeclaration | ExternDeclaration | CastStatement | SizeOfStatement | FunctionCallStatement | IfStatement | WhileStatement | ReturnStatement | "break" | "continue") SEMICOLON */
let parse_statement = (p: *parser) => *Node {
return cast(*Node, null);
};
let parse_program = (p: *parser) => *Node {
let nodes = cast(*Node, arena_alloc((*p).arena, 10000));
let i = 0;
while (*p).offset < (*p).tokens_len {
let s = parse_statement(p);
if s == cast(*Node, null) {
return s;
};
(*(nodes + cast(*Node, i))) = s;
i = i + 1;
};
let d = cast(*NODE_PROGRAM_DATA, arena_alloc((*p).arena, 100));
(*d).statements = nodes;
(*d).statements_len = i;
let n = Node{};
n.type = NODE_PROGRAM;
n.data = cast(*void, d);
return create_node(p, n);
};
let parse = (p: *parser) => *Node {
return parse_program(p);
};
|
