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antlr-exx-degen.g
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header {
import java.io.*;
import java.util.Vector;
import java.util.Hashtable;
}
/**
* The Express-X grammar written as ANTLR productions.
*
* ---> This is a degen grammar <---
*
* Peter Denno, [email protected]
* When refreshing the parser rules:
* 1) replace "q col = q" with COLEQ
* 2) rel_op (COLLTGT , COLEQ )
* 3) view_decl (COLON)
*
*/
class DegenXParser extends Parser;
options {
exportVocab=DegenX;
/*analyzerDebug=true;*/
interactive=true;
k=1;
}
abstract_supertype_declaration
: "ABSTRACT" "SUPERTYPE" ( subtype_constraint )?
;
actual_parameter_list
: LPAREN! parameter ( COMMA! parameter )* RPAREN!
;
add_like_op
: PLUS
| MINUS
| "OR"
| "XOR"
;
aggregate_initializer
: LBRACK! ( element ( COMMA! element )* )? RBRACK!
;
aggregate_source
: simple_expression
;
aggregate_type
: "AGGREGATE" ( COLON! IDENT )? "OF" parameter_type
;
aggregation_types
: array_type
| bag_type
| list_type
| set_type
;
algorithm_head
: ( declaration )* ( constant_decl )? ( local_decl )?
;
array_type
: "ARRAY" bound_spec "OF" ( "OPTIONAL" )? ( "UNIQUE" )? base_type
;
backward_path_qualifier
: LTMINUS! ( IDENT )? path_condition
;
bag_type
: "BAG" ( bound_spec )? "OF" base_type
;
base_type
: aggregation_types
| simple_types
| named_types
;
binary_type
: "BINARY" ( width_spec )?
;
binding_header
: ( "PARTITION" partition_id SEMI! )? ( from_clause )? ( local_decl )? ( where_clause )? ( identified_by_clause )? ( ordered_by_clause )?
;
boolean_type
: "BOOLEAN"
;
bound_1
: numeric_expression
;
bound_2
: numeric_expression
;
bound_spec
: LBRACK! bound_1 COLON! bound_2 RBRACK!
;
built_in_constant
: "CONST_E"
| "PI"
| "SELF"
| QUESTION
;
built_in_function
: "ABS"
| "ACOS"
| "ASIN"
| "ATAN"
| "BLENGTH"
| "COS"
| "EXISTS"
| "EXTENT"
| "EXP"
| "FORMAT"
| "HIBOUND"
| "HIINDEX"
| "LENGTH"
| "LOBOUND"
| "LOINDEX"
| "LOG"
| "LOG2"
| "LOG10"
| "NVL"
| "ODD"
| "ROLESOF"
| "SIN"
| "SIZEOF"
| "SQRT"
| "TAN"
| "TYPEOF"
| "USEDIN"
| "VALUE"
| "VALUE_IN"
| "VALUE_UNIQUE"
;
built_in_procedure
: "INSERT"
| "REMOVE"
;
case_action
: case_label ( COMMA! case_label )* COLON! stmt
;
case_expr
: "CASE" selector "OF" ( case_expr_action )* ( "OTHERWISE" COLON! expression )? "END_CASE"
;
case_expr_action
: case_label ( COMMA! case_label )* COLON! expression SEMI!
;
case_label
: expression
;
case_stmt
: "CASE" selector "OF" ( case_action )* ( "OTHERWISE" COLON! stmt )? "END_CASE" SEMI!
;
compound_stmt
: "BEGIN" stmt ( stmt )* "END" SEMI!
;
constant_body
: constant_id COLON! base_type COLEQ expression SEMI!
;
constant_decl
: "CONSTANT" constant_body ( constant_body )* "END_CONSTANT" SEMI!
;
constant_id
: IDENT
;
declaration
: function_decl
| procedure_decl
;
dependent_map_decl
: "DEPENDENT_MAP" map_id "AS" target_parameter SEMI! ( target_parameter SEMI! )* ( map_subtype_of_clause )? dep_map_partition ( dep_map_partition )* "END_DEPENDENT_MAP" SEMI!
;
dep_binding_decl
: dep_from_clause ( where_clause )? ( ordered_by_clause )?
;
dep_from_clause
: "FROM" dep_source_parameter SEMI! ( dep_source_parameter SEMI! )*
;
dep_map_decl_body
: dep_binding_decl map_project_clause
;
dep_map_partition
: ( "PARTITION" partition_id COLON! )? dep_map_decl_body
;
dep_source_parameter
: IDENT ( COMMA! IDENT )* COLON! (simple_types | ident_dot_ident )
;
domain_rule
: ( label COLON! )? logical_expression
;
element
: expression ( COLON! repetition )?
;
entity_id
: IDENT
;
entity_instantiation_loop
: "FOR" instantiation_loop_control SEMI! map_project_clause
;
escape_stmt
: "ESCAPE" SEMI!
;
expression
: simple_expression ( rel_op_extended simple_expression )?
;
expression_or_wild
: expression
| UNDERSCORE
;
extent_reference
: ident_dot_ident
;
factor
: simple_factor ( DOUBLESTAR simple_factor )?
;
foreach_expr
: "EACH" variable_id "IN" expression ( where_clause )? "RETURN" expression
;
forloop_expr
: repeat_control "RETURN" expression
;
formal_parameter
: IDENT ( COMMA! IDENT )* COLON! parameter_type
;
forward_path_qualifier
: "::" IDENT ( path_condition )?
;
for_expr
: "FOR" ( foreach_expr | forloop_expr )
;
from_clause
: "FROM" ( source_parameter SEMI! )+
;
function_decl
: function_head ( algorithm_head )? (stmt)+ "END_FUNCTION" SEMI!
;
function_head
: "FUNCTION" function_id ( LPAREN! formal_parameter ( SEMI! formal_parameter )* RPAREN! )?
COLON! parameter_type SEMI!
;
function_id
: IDENT
;
generalized_types
: aggregate_type
| general_aggregation_types
| generic_type
;
general_aggregation_types
: general_array_type
| general_bag_type
| general_list_type
| general_set_type
;
general_array_type
: "ARRAY" ( bound_spec )? "OF" ( "OPTIONAL" )? ( "UNIQUE" )? parameter_type
;
general_bag_type
: "BAG" ( bound_spec )? "OF" parameter_type
;
general_list_type
: "LIST" ( bound_spec )? "OF" ( "UNIQUE" )? parameter_type
;
general_set_type
: "SET" ( bound_spec )? "OF" parameter_type
;
generic_type
: "GENERIC" ( COLON! IDENT )?
;
identified_by_clause
: "IDENTIFIED_BY" id_parameter SEMI! ( id_parameter SEMI! )*
;
/* POD unfortunately, ID COLON! should be optional! */
id_parameter
: IDENT COLON! ( expression )?
;
ident_dot_ident
: IDENT ( DOT! IDENT )?
;
if_expr
: "IF" logical_expression "THEN" expression ( "ELSIF" logical_expression expression )* ( "ELSE" expression )? "END_IF"
;
if_stmt
: "IF" logical_expression "THEN" ( stmt )+ ( "ELSE" (stmt)+ )? "END_IF" SEMI!
;
increment
: numeric_expression
;
increment_control
: variable_id COLEQ bound_1 "TO" bound_2 ( "BY" increment )?
;
index
: numeric_expression
;
index_1
: index
;
index_2
: index
;
index_qualifier
: LBRACK! index_1 ( COLON! index_2 )? RBRACK!
;
instantiation_foreach_control
: "EACH" variable_id "IN" ident_dot_ident "INDEXING" variable_id
( variable_id "IN" ident_dot_ident "INDEXING" variable_id )*
;
instantiation_loop_control
: instantiation_foreach_control
| repeat_control
;
integer_type
: "INTEGER"
;
interval
: LCURLY! interval_low interval_op interval_item interval_op interval_high RCURLY!
;
interval_high
: simple_expression
;
interval_item
: simple_expression
;
interval_low
: simple_expression
;
interval_op
: LT
| LE
;
label
: IDENT
;
list_type
: "LIST" ( bound_spec )? "OF" ( "UNIQUE" )? base_type
;
literal
: logical_literal
| STRING_LITERAL
;
local_decl
: "LOCAL" (local_variable)+ "END_LOCAL" SEMI!
;
local_variable
: variable_id ( COMMA! variable_id )* COLON! parameter_type ( COLEQ expression )? SEMI!
;
logical_expression
: expression
;
logical_literal
: "FALSE"
| "TRUE"
| "UNKNOWN"
;
logical_type
: "LOGICAL"
;
map_attribute_declaration
: ( IDENT (index_qualifier)? (BACKSLASH! IDENT)? ( DOT! IDENT)? )? (index_qualifier)?
COLEQ expression SEMI!
;
map_decl
: "MAP" map_id "AS" (target_parameter SEMI!)+
( (map_subtype_of_clause ( subtype_binding_header map_decl_body )+ )
| ( ( binding_header map_decl_body )+ ))
"END_MAP" SEMI!
;
map_decl_body
: ( ( entity_instantiation_loop )+ )
| map_project_clause
| ( "RETURN" expression SEMI! )
;
map_id
: IDENT
;
map_project_clause
: "SELECT" ( map_attribute_declaration )+
;
map_subtype_of_clause
: "SUBTYPE" "OF" LPAREN! ident_dot_ident RPAREN! SEMI!
;
multiplication_like_op
: STAR
| DIVSIGN
| "DIV"
| "MOD"
| "AND"
| DOUBLEBAR
;
named_types
: IDENT
;
null_stmt
: SEMI!
;
number_type
: "NUMBER"
;
numeric_expression
: simple_expression
;
one_of
: "ONEOF" LPAREN! supertype_expression ( COMMA! supertype_expression )* RPAREN!
;
ordered_by_clause
: "ORDERED_BY" ( expression SEMI! )+
;
parameter
: expression
;
parameter_type
: generalized_types
| named_types
| simple_types
;
partition_id
: IDENT
;
path_condition
: LCURLY! extent_reference ( BAR! logical_expression )? RCURLY!
;
path_qualifier
: forward_path_qualifier
| backward_path_qualifier
;
precision_spec
: numeric_expression
;
procedure_decl
: procedure_head ( algorithm_head )? ( stmt )* "END_PROCEDURE" SEMI!
;
procedure_head
: "PROCEDURE" procedure_id ( LPAREN! ( "VAR" )? formal_parameter ( SEMI! ( "VAR" )? formal_parameter )* RPAREN! )? SEMI!
;
procedure_id
: IDENT
;
query_expression
: "QUERY" LPAREN! variable_id LTSTAR! aggregate_source BAR! logical_expression RPAREN!
;
real_type
: "REAL" ( LPAREN! precision_spec RPAREN! )?
;
reference_clause
: "REFERENCE" "FROM" schema_ref_or_rename ( LPAREN! resource_or_rename ( COMMA! resource_or_rename )* RPAREN! )? ( "AS" ( "SOURCE"
| "TARGET" ) )? SEMI!
;
rel_op
: LT
| GT
| LE
| GE
| LTGT
| ASSIGN
| ":<>:"
| ":=:"
;
rel_op_extended
: rel_op
| "IN"
| "LIKE"
;
rename_id
: IDENT
;
repeat_control
: ( increment_control )? ( while_control )? ( until_control )?
;
repeat_stmt
: "REPEAT" repeat_control SEMI! ( stmt )+ "END_REPEAT" SEMI!
;
repetition
: numeric_expression
;
resource_or_rename
: resource_ref ( "AS" rename_id )?
;
resource_ref
: IDENT
;
return_stmt
: "RETURN" ( LPAREN! expression RPAREN! )? SEMI!
;
rule_decl
: rule_head ( stmt )* where_clause "END_RULE" SEMI!
;
rule_head
: "RULE" rule_id "FOR" LPAREN! IDENT ( COMMA! IDENT )* RPAREN! SEMI!
;
rule_id
: IDENT
;
schema_map_body_element
: function_decl
| procedure_decl
| view_decl
| map_decl
| dependent_map_decl
| rule_decl
;
schema_map_body_element_list
: ( schema_map_body_element )+
;
schema_map_decl
: "SCHEMA_MAP" IDENT ( reference_clause )+ ( constant_decl )? schema_map_body_element_list "END_SCHEMA_MAP" SEMI!
;
schema_ref_or_rename
: IDENT ( COLON! IDENT )?
;
schema_view_body_element
: function_decl
| procedure_decl
| view_decl
| rule_decl
;
schema_view_body_element_list
: ( schema_view_body_element )+
;
schema_view_decl
: "SCHEMA_VIEW" IDENT ( reference_clause )* ( constant_decl )? schema_view_body_element_list
"END_SCHEMA_VIEW" SEMI!
;
selector
: expression
;
set_type
: "SET" ( bound_spec )? "OF" base_type
;
simple_expression
: term ( add_like_op term )*
;
/* First rule is general_attribute_qualifier */
/* Second rule is group_qualifier */
/* index_qualifier is [n] or [n:m] path_qualifier is <- ident */
qualifier
: DOT! IDENT
| BACKSLASH! IDENT
| index_qualifier
| path_qualifier
;
simple_qualifier
: index_qualifier
| path_qualifier
;
/* first rule incorporates enumeration_reference, entity_constructor, unary_op ( expression ) | primary */
/* and primary itself subsumes qualifiable_factor */
/* simple_factor -> aggregate_initializer */
/* qualifier -> index_qualifier */
/* POD I removed aggregate_initializer.... */
/* schemaName.id( */
/* 2001/3/12 problem is definitely with LBRACK */
/* aggregate_initializer -> LBRACK!... */
simple_factor
: ( (unary_op)? ( ( IDENT (factor_qualifier)* )
| ( built_in_constant (factor_qualifier)* )
| ( built_in_function (factor_qualifier)* )
| literal )
| LPAREN expression RPAREN
| aggregate_initializer
| interval
| query_expression
| case_expr
| for_expr
| if_expr
;
factor_qualifier
: ( AT! IDENT )
| ( DOT! IDENT)
| ( BACKSLASH! IDENT )
| index_qualifier
| path_qualifier
| LPAREN! Expression_or_wild (COMMA! Expression_or_wild)* RPAREN!
;
simple_types
: binary_type
| boolean_type
| integer_type
| logical_type
| number_type
| real_type
| string_type
;
skip_stmt
: "SKIP" SEMI!
;
source_parameter
: IDENT COLON! extent_reference
;
/* First block incorporates procedure_call_stmt and assignment_stmt */
stmt
: ( built_in_procedure actual_parameter_list ) |
( IDENT ( (actual_parameter_list)? | ( (qualifier)* COLEQ expression )) )
SEMI!
| case_stmt
| compound_stmt
| escape_stmt
| if_stmt
| null_stmt
| repeat_stmt
| return_stmt
| skip_stmt
;
string_type
: "STRING" ( width_spec )?
;
subsuper
: ( supertype_constraint )? ( subtype_declaration )?
;
subtype_binding_header
: ( "PARTITION" ( partition_id )? SEMI! )? where_clause
;
subtype_constraint
: "OF" LPAREN! supertype_expression RPAREN!
;
subtype_declaration
: "SUBTYPE" "OF" LPAREN! IDENT ( COMMA! IDENT )* RPAREN!
;
supertype_constraint
: abstract_supertype_declaration
| supertype_rule
;
supertype_expression
: supertype_factor ( "ANDOR" supertype_factor )*
;
supertype_factor
: supertype_term ( "AND" supertype_term )*
;
supertype_rule
: "SUPERTYPE" ( subtype_constraint )?
;
supertype_term
: IDENT
| one_of
| LPAREN! supertype_expression RPAREN!
;
syntax_x
: schema_map_decl
| schema_view_decl
;
target_entity_reference
: ident_dot_ident ( AMPERSAND! ident_dot_ident )*
;
target_parameter
: IDENT ( COMMA! IDENT )* COLON! ( "AGGREGATE" ( bound_spec )? "OF" )? target_entity_reference
;
term
: factor ( multiplication_like_op factor )*
;
unary_op
: PLUS
| MINUS
| "NOT"
;
until_control
: "UNTIL" logical_expression
;
variable_id
: IDENT
;
view_attribute_decl
: IDENT COLON! ("OPTIONAL")? (aggregation_types | simple_types | (IDENT (DOT! IDENT))) COLEQ expression SEMI!
;
view_attr_decl_stmt_list
: view_attribute_decl ( view_attribute_decl )*
;
view_decl
: "VIEW" view_id ( COLON! base_type )? subsuper SEMI! ( subtype_binding_header view_project_clause ( subtype_binding_header view_project_clause )* )
| ( binding_header view_project_clause ( binding_header view_project_clause )* ) "END_VIEW" SEMI!
;
view_id
: IDENT
;
view_project_clause
: ( "SELECT" view_attr_decl_stmt_list )
| ( "RETURN" expression )
;
where_clause
: "WHERE" domain_rule SEMI! ( domain_rule SEMI! )*
;
while_control
: "WHILE" logical_expression
;
width
: numeric_expression
;
width_spec
: LPAREN! width RPAREN! ( "FIXED" )?
;
/************************ These are from postlogue.g *******************************/
/* ExpressX LEXICAL RULES */
class DegenXLexer extends Lexer;
options {
exportVocab=DegenX;
k=4;
}
SEMI
options {
paraphrase = ";";
}
: ';'
;
QUESTION
options {
paraphrase = "?";
}
: '?'
;
LPAREN
options {
paraphrase = "(";
}
: '('
;
RPAREN
options {
paraphrase = ")";
}
: ')'
;
LBRACK
options {
paraphrase = "[";
}
: '['
;
RBRACK
options {
paraphrase = "]";
}
: ']'
;
LCURLY
options {
paraphrase = "{";
}
: '{'
;
RCURLY
options {
paraphrase = "}";
}
: '}'
;
BAR
options {
paraphrase = "|";
}
: '|'
;
AMPERSAND
options {
paraphrase = "&";
}
: '&'
;
COLON
options {
paraphrase = ":";
}
: ':'
;
COMMA
options {
paraphrase = ",";
}
: ','
;
DOT
options {
paraphrase = ".";
}
: '.'
;
ASSIGN
options {
paraphrase = "=";
}
: '='
;
LT
options {
paraphrase = "<";
}
: '<'
;
LE
options {
paraphrase = "<=";
}
: '<'
'='
;
GT
options {
paraphrase = ">";