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added a lot to parser

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git-svn-id: svn://anubis/jtlc/trunk@4 f5bc74b8-7b62-4e90-9214-7121d538519f
This commit is contained in:
josh 2009-03-31 00:31:07 +00:00
parent f8b1248c72
commit 57c9bbbbea
1 changed files with 70 additions and 3 deletions
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73
parser/parser.yy
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@ -80,8 +80,54 @@ int yywrap()
%%
program: INT_LITERAL
;
program_items: /* empty */
| program_item program_items
;
program_item: module_declaration
| import
| variable_declaration
| function
;
module_declaration: MODULE module_name SEMICOLON
;
module_name: IDENTIFIER module_name_more
;
module_name_more: /* empty */
| DOT IDENTIFIER module_name_more
;
import: IMPORT import_name SEMICOLON
;
import_name: IDENTIFIER import_name_more
;
import_name_more: /* empty */
| DOT import_name_more_more
;
import_name_more_more: IDENTIFIER import_name_more
| STAR
;
function: type IDENTIFIER LPAREN parameter_list RPAREN LCURLY function_items RCURLY
;
function_items: /* empty */
| statement function_items
;
parameter_list: /* empty */
| variable_spec parameter_list_more
;
parameter_list_more: /* empty */
| COMMA variable_spec parameter_list_more
;
primitive_type: BYTE
| UBYTE
@ -106,17 +152,38 @@ struct_item: variable_declaration
variable_declaration: variable_spec SEMICOLON;
;
variable_spec: IDENTIFIER COLON type
variable_spec: type IDENTIFIER
;
ptr_type: type STAR
;
array_type: type LBRACKET RBRACKET
;
type: primitive_type
| ptr_type
| struct_type
| array_type
| IDENTIFIER
;
statement: expression SEMICOLON
| return_statement SEMICOLON
;
return_statement: RETURN expression
;
expression: assign_expr
;
assign_expr: lvalue ASSIGN expression
;
lvalue: IDENTIFIER
;
%%
void parse(const char * fileName)