org.drools.compiler.lang.dsl.DSLMap.g Maven / Gradle / Ivy
grammar DSLMap;
options { output = AST; backtrack = true; }
tokens {
// imaginary tokens
VT_DSL_GRAMMAR;
VT_ENTRY;
VT_SCOPE;
VT_CONDITION;
VT_CONSEQUENCE;
VT_KEYWORD;
VT_ANY;
VT_META;
VT_ENTRY_KEY;
VT_ENTRY_VAL;
VT_VAR_DEF;
VT_VAR_REF;
VT_LITERAL;
VT_PATTERN;
VT_QUAL;
VT_SPACE;
}
@lexer::header {
package org.drools.compiler.lang.dsl;
import java.util.List;
import java.util.ArrayList;
import org.drools.compiler.compiler.ParserError;
}
@parser::header {
package org.drools.compiler.lang.dsl;
import java.util.List;
import java.util.ArrayList;
import java.util.regex.Pattern;
import org.drools.compiler.compiler.ParserError;
}
@lexer::members {
private List errors = new ArrayList();
public void reportError(RecognitionException ex) {
errors.add(new ParserError( "DSL lexer error", ex.line, ex.charPositionInLine ) );
}
public List getErrors() {
return errors;
}
/** Override this method to not output mesages */
public void emitErrorMessage(String msg) {
}
}
@parser::members {
private List errors = new ArrayList();
public void reportError(RecognitionException ex) {
errors.add(new ParserError( "DSL parser error", ex.line, ex.charPositionInLine ) );
}
public List getErrors() {
return errors;
}
/** Override this method to not output mesages */
public void emitErrorMessage(String msg) {
}
private static final Pattern namePat = Pattern.compile( "[\\p{L}_$][\\p{L}_$\\d]*" );
private void isIdentifier( Token name ){
String nameString = name.getText();
if( ! namePat.matcher( nameString ).matches() ){
errors.add(new ParserError( "invalid variable identifier " + nameString,
name.getLine(), name.getCharPositionInLine() ) );
}
}
private boolean validateLT(int LTNumber, String text){
if (null == input) return false;
if (null == input.LT(LTNumber)) return false;
if (null == input.LT(LTNumber).getText()) return false;
String text2Validate = input.LT(LTNumber).getText();
if (text2Validate.startsWith("[") && text2Validate.endsWith("]")){
text2Validate = text2Validate.substring(1, text2Validate.length() - 1);
}
return text2Validate.equalsIgnoreCase(text);
}
private boolean validateIdentifierKey(String text){
return validateLT(1, text);
}
}
// PARSER RULES
mapping_file
: statement*
-> ^(VT_DSL_GRAMMAR statement*)
;
statement
: entry
| EOL!
;
//! after EOL means to not put it into the AST
//we need to make entry so the meta section is optional
entry : scope_section meta_section? key_section EQUALS value_section? (EOL|EOF)
-> ^(VT_ENTRY scope_section meta_section? key_section value_section?)
;
catch [ RecognitionException e ] {
reportError( e );
}
catch [ RewriteEmptyStreamException e ] {
}
scope_section
: LEFT_SQUARE
(value1=condition_key
| value2=consequence_key
| value3=keyword_key
| value4=any_key
)
RIGHT_SQUARE
-> ^(VT_SCOPE[$LEFT_SQUARE, "SCOPE SECTION"] $value1? $value2? $value3? $value4?)
;
meta_section
: LEFT_SQUARE LITERAL? RIGHT_SQUARE
-> ^(VT_META[$LEFT_SQUARE, "META SECTION"] LITERAL?)
;
key_section
: ks=key_sentence+
-> ^(VT_ENTRY_KEY key_sentence+ )
;
key_sentence
@init {
String text = "";
}
: variable_definition
| cb=key_chunk { text = $cb.text; }
-> VT_LITERAL[$cb.start, text]
;
key_chunk
: literal+
;
value_section
: value_sentence+
-> ^(VT_ENTRY_VAL value_sentence+ )
;
value_sentence
@init {
String text = "";
}
: variable_reference
| vc=value_chunk { text = $vc.text; }
-> VT_LITERAL[$vc.start, text]
;
value_chunk
: (literal|EQUALS|COMMA)+
;
literal
: ( LITERAL | COLON | LEFT_SQUARE | RIGHT_SQUARE)
;
variable_definition
@init {
String text = "";
boolean hasSpaceBefore = false;
boolean hasSpaceAfter = false;
}
: lc=LEFT_CURLY
{
CommonToken back2 = (CommonToken)input.LT(-2);
if( back2!=null && back2.getStopIndex() < ((CommonToken)lc).getStartIndex() -1 ) hasSpaceBefore = true;
}
name=LITERAL ( (COLON q=LITERAL)? COLON pat=pattern {text = $pat.text;} )? rc=RIGHT_CURLY
{
CommonToken rc1 = (CommonToken)input.LT(1);
if(!"=".equals(rc1.getText()) && ((CommonToken)rc).getStopIndex() < rc1.getStartIndex() - 1) hasSpaceAfter = true;
isIdentifier( $name );
}
//pat can be null if there's no pattern here
-> { hasSpaceBefore && !"".equals(text) && !hasSpaceAfter}? VT_SPACE ^(VT_VAR_DEF $name ^(VT_QUAL $q?) VT_PATTERN[$pat.start, text] )
-> {!hasSpaceBefore && !"".equals(text) && !hasSpaceAfter}? ^(VT_VAR_DEF $name ^(VT_QUAL $q?) VT_PATTERN[$pat.start, text] )
-> { hasSpaceBefore && !hasSpaceAfter}? VT_SPACE ^(VT_VAR_DEF $name ^(VT_QUAL $q?) )
-> {!hasSpaceBefore && !hasSpaceAfter}? ^(VT_VAR_DEF $name ^(VT_QUAL $q?) )
-> { hasSpaceBefore && !"".equals(text) && hasSpaceAfter}? VT_SPACE ^(VT_VAR_DEF $name ^(VT_QUAL $q?) VT_PATTERN[$pat.start, text] ) VT_SPACE
-> {!hasSpaceBefore && !"".equals(text) && hasSpaceAfter}? ^(VT_VAR_DEF $name ^(VT_QUAL $q?) VT_PATTERN[$pat.start, text] ) VT_SPACE
-> { hasSpaceBefore && hasSpaceAfter}? VT_SPACE ^(VT_VAR_DEF $name ^(VT_QUAL $q?) ) VT_SPACE
-> {!hasSpaceBefore && hasSpaceAfter}? ^(VT_VAR_DEF $name ^(VT_QUAL $q?) ) VT_SPACE
-> ^(VT_VAR_DEF $name ^(VT_QUAL $q?) )
;
pattern
: ( literal
| LEFT_CURLY literal RIGHT_CURLY
| LEFT_SQUARE pattern RIGHT_SQUARE
)+
;
variable_reference
@init {
boolean hasSpaceBefore = false;
boolean hasSpaceAfter = false;
String text = "";
}
: lc=LEFT_CURLY
{
CommonToken back2 = (CommonToken)input.LT(-2);
if( back2!=null && back2.getStopIndex() < ((CommonToken)lc).getStartIndex() -1 ) hasSpaceBefore = true;
}
name=LITERAL rc=RIGHT_CURLY
{if(((CommonToken)rc).getStopIndex() < ((CommonToken)input.LT(1)).getStartIndex() - 1) hasSpaceAfter = true;}
-> { hasSpaceBefore && hasSpaceAfter}? VT_SPACE ^(VT_VAR_REF $name ) VT_SPACE
-> { hasSpaceBefore && !hasSpaceAfter}? VT_SPACE ^(VT_VAR_REF $name )
-> {!hasSpaceBefore && hasSpaceAfter}? ^(VT_VAR_REF $name ) VT_SPACE
-> ^(VT_VAR_REF $name )
;
condition_key
: {validateIdentifierKey("condition")||validateIdentifierKey("when")}? value=LITERAL
-> VT_CONDITION[$value]
;
consequence_key
: {validateIdentifierKey("consequence")||validateIdentifierKey("then")}? value=LITERAL
-> VT_CONSEQUENCE[$value]
;
keyword_key
: {validateIdentifierKey("keyword")}? value=LITERAL
-> VT_KEYWORD[$value]
;
any_key
: {validateIdentifierKey("*")}? value=LITERAL
-> VT_ANY[$value]
;
// LEXER RULES
WS : ( ' '
| '\t'
| '\f'
)+
{ $channel=HIDDEN;}
;
EOL :
( ( '\r\n' )=> '\r\n' // Evil DOS
| '\r' // Macintosh
| '\n' // Unix (the right way)
)
;
fragment
EscapeSequence
: '\\' ('b'|'B'|'t'|'n'|'f'|'r'|'\"'|'\''|'\\'|'.'|'o'|
'x'|'a'|'e'|'c'|'d'|'D'|'s'|'S'|'w'|'W'|'p'|'A'|
'G'|'Z'|'z'|'Q'|'E'|'*'|'['|']'|'('|')'|'$'|'^'|
'{'|'}'|'?'|'+'|'-'|'&'|'|'|'='|'u'|'0'|'#')
;
LEFT_SQUARE
: '['
;
RIGHT_SQUARE
: ']'
;
LEFT_CURLY
: '{'
;
RIGHT_CURLY
: '}'
;
EQUALS : '='
;
DOT : '.'
;
COLON : ':'
;
COMMA : ','
;
LITERAL
: (IdentifierPart|MISC|EscapeSequence|DOT)+
;
fragment
MISC :
'>'|'<'|'!' | '@' | '%' | '^' | '*' | '-' | '+' | '?' | COMMA | '/' | '\'' | '"' | '|' | '&' | '(' | ')' | ';' | '#' | '~'
;
fragment
IdentifierPart
: '\u0000'..'\u0008'
| '\u000e'..'\u001b'
| '\u0024'
| '\u0030'..'\u0039'
| '\u0041'..'\u005a'
| '\u005f'
| '\u0061'..'\u007a'
| '\u007f'..'\u009f'
| '\u00a2'..'\u00a5'
| '\u00aa'
| '\u00ad'
| '\u00b5'
| '\u00ba'
| '\u00c0'..'\u00d6'
| '\u00d8'..'\u00f6'
| '\u00f8'..'\u0236'
| '\u0250'..'\u02c1'
| '\u02c6'..'\u02d1'
| '\u02e0'..'\u02e4'
| '\u02ee'
| '\u0300'..'\u0357'
| '\u035d'..'\u036f'
| '\u037a'
| '\u0386'
| '\u0388'..'\u038a'
| '\u038c'
| '\u038e'..'\u03a1'
| '\u03a3'..'\u03ce'
| '\u03d0'..'\u03f5'
| '\u03f7'..'\u03fb'
| '\u0400'..'\u0481'
| '\u0483'..'\u0486'
| '\u048a'..'\u04ce'
| '\u04d0'..'\u04f5'
| '\u04f8'..'\u04f9'
| '\u0500'..'\u050f'
| '\u0531'..'\u0556'
| '\u0559'
| '\u0561'..'\u0587'
| '\u0591'..'\u05a1'
| '\u05a3'..'\u05b9'
| '\u05bb'..'\u05bd'
| '\u05bf'
| '\u05c1'..'\u05c2'
| '\u05c4'
| '\u05d0'..'\u05ea'
| '\u05f0'..'\u05f2'
| '\u0600'..'\u0603'
| '\u0610'..'\u0615'
| '\u0621'..'\u063a'
| '\u0640'..'\u0658'
| '\u0660'..'\u0669'
| '\u066e'..'\u06d3'
| '\u06d5'..'\u06dd'
| '\u06df'..'\u06e8'
| '\u06ea'..'\u06fc'
| '\u06ff'
| '\u070f'..'\u074a'
| '\u074d'..'\u074f'
| '\u0780'..'\u07b1'
| '\u0901'..'\u0939'
| '\u093c'..'\u094d'
| '\u0950'..'\u0954'
| '\u0958'..'\u0963'
| '\u0966'..'\u096f'
| '\u0981'..'\u0983'
| '\u0985'..'\u098c'
| '\u098f'..'\u0990'
| '\u0993'..'\u09a8'
| '\u09aa'..'\u09b0'
| '\u09b2'
| '\u09b6'..'\u09b9'
| '\u09bc'..'\u09c4'
| '\u09c7'..'\u09c8'
| '\u09cb'..'\u09cd'
| '\u09d7'
| '\u09dc'..'\u09dd'
| '\u09df'..'\u09e3'
| '\u09e6'..'\u09f3'
| '\u0a01'..'\u0a03'
| '\u0a05'..'\u0a0a'
| '\u0a0f'..'\u0a10'
| '\u0a13'..'\u0a28'
| '\u0a2a'..'\u0a30'
| '\u0a32'..'\u0a33'
| '\u0a35'..'\u0a36'
| '\u0a38'..'\u0a39'
| '\u0a3c'
| '\u0a3e'..'\u0a42'
| '\u0a47'..'\u0a48'
| '\u0a4b'..'\u0a4d'
| '\u0a59'..'\u0a5c'
| '\u0a5e'
| '\u0a66'..'\u0a74'
| '\u0a81'..'\u0a83'
| '\u0a85'..'\u0a8d'
| '\u0a8f'..'\u0a91'
| '\u0a93'..'\u0aa8'
| '\u0aaa'..'\u0ab0'
| '\u0ab2'..'\u0ab3'
| '\u0ab5'..'\u0ab9'
| '\u0abc'..'\u0ac5'
| '\u0ac7'..'\u0ac9'
| '\u0acb'..'\u0acd'
| '\u0ad0'
| '\u0ae0'..'\u0ae3'
| '\u0ae6'..'\u0aef'
| '\u0af1'
| '\u0b01'..'\u0b03'
| '\u0b05'..'\u0b0c'
| '\u0b0f'..'\u0b10'
| '\u0b13'..'\u0b28'
| '\u0b2a'..'\u0b30'
| '\u0b32'..'\u0b33'
| '\u0b35'..'\u0b39'
| '\u0b3c'..'\u0b43'
| '\u0b47'..'\u0b48'
| '\u0b4b'..'\u0b4d'
| '\u0b56'..'\u0b57'
| '\u0b5c'..'\u0b5d'
| '\u0b5f'..'\u0b61'
| '\u0b66'..'\u0b6f'
| '\u0b71'
| '\u0b82'..'\u0b83'
| '\u0b85'..'\u0b8a'
| '\u0b8e'..'\u0b90'
| '\u0b92'..'\u0b95'
| '\u0b99'..'\u0b9a'
| '\u0b9c'
| '\u0b9e'..'\u0b9f'
| '\u0ba3'..'\u0ba4'
| '\u0ba8'..'\u0baa'
| '\u0bae'..'\u0bb5'
| '\u0bb7'..'\u0bb9'
| '\u0bbe'..'\u0bc2'
| '\u0bc6'..'\u0bc8'
| '\u0bca'..'\u0bcd'
| '\u0bd7'
| '\u0be7'..'\u0bef'
| '\u0bf9'
| '\u0c01'..'\u0c03'
| '\u0c05'..'\u0c0c'
| '\u0c0e'..'\u0c10'
| '\u0c12'..'\u0c28'
| '\u0c2a'..'\u0c33'
| '\u0c35'..'\u0c39'
| '\u0c3e'..'\u0c44'
| '\u0c46'..'\u0c48'
| '\u0c4a'..'\u0c4d'
| '\u0c55'..'\u0c56'
| '\u0c60'..'\u0c61'
| '\u0c66'..'\u0c6f'
| '\u0c82'..'\u0c83'
| '\u0c85'..'\u0c8c'
| '\u0c8e'..'\u0c90'
| '\u0c92'..'\u0ca8'
| '\u0caa'..'\u0cb3'
| '\u0cb5'..'\u0cb9'
| '\u0cbc'..'\u0cc4'
| '\u0cc6'..'\u0cc8'
| '\u0cca'..'\u0ccd'
| '\u0cd5'..'\u0cd6'
| '\u0cde'
| '\u0ce0'..'\u0ce1'
| '\u0ce6'..'\u0cef'
| '\u0d02'..'\u0d03'
| '\u0d05'..'\u0d0c'
| '\u0d0e'..'\u0d10'
| '\u0d12'..'\u0d28'
| '\u0d2a'..'\u0d39'
| '\u0d3e'..'\u0d43'
| '\u0d46'..'\u0d48'
| '\u0d4a'..'\u0d4d'
| '\u0d57'
| '\u0d60'..'\u0d61'
| '\u0d66'..'\u0d6f'
| '\u0d82'..'\u0d83'
| '\u0d85'..'\u0d96'
| '\u0d9a'..'\u0db1'
| '\u0db3'..'\u0dbb'
| '\u0dbd'
| '\u0dc0'..'\u0dc6'
| '\u0dca'
| '\u0dcf'..'\u0dd4'
| '\u0dd6'
| '\u0dd8'..'\u0ddf'
| '\u0df2'..'\u0df3'
| '\u0e01'..'\u0e3a'
| '\u0e3f'..'\u0e4e'
| '\u0e50'..'\u0e59'
| '\u0e81'..'\u0e82'
| '\u0e84'
| '\u0e87'..'\u0e88'
| '\u0e8a'
| '\u0e8d'
| '\u0e94'..'\u0e97'
| '\u0e99'..'\u0e9f'
| '\u0ea1'..'\u0ea3'
| '\u0ea5'
| '\u0ea7'
| '\u0eaa'..'\u0eab'
| '\u0ead'..'\u0eb9'
| '\u0ebb'..'\u0ebd'
| '\u0ec0'..'\u0ec4'
| '\u0ec6'
| '\u0ec8'..'\u0ecd'
| '\u0ed0'..'\u0ed9'
| '\u0edc'..'\u0edd'
| '\u0f00'
| '\u0f18'..'\u0f19'
| '\u0f20'..'\u0f29'
| '\u0f35'
| '\u0f37'
| '\u0f39'
| '\u0f3e'..'\u0f47'
| '\u0f49'..'\u0f6a'
| '\u0f71'..'\u0f84'
| '\u0f86'..'\u0f8b'
| '\u0f90'..'\u0f97'
| '\u0f99'..'\u0fbc'
| '\u0fc6'
| '\u1000'..'\u1021'
| '\u1023'..'\u1027'
| '\u1029'..'\u102a'
| '\u102c'..'\u1032'
| '\u1036'..'\u1039'
| '\u1040'..'\u1049'
| '\u1050'..'\u1059'
| '\u10a0'..'\u10c5'
| '\u10d0'..'\u10f8'
| '\u1100'..'\u1159'
| '\u115f'..'\u11a2'
| '\u11a8'..'\u11f9'
| '\u1200'..'\u1206'
| '\u1208'..'\u1246'
| '\u1248'
| '\u124a'..'\u124d'
| '\u1250'..'\u1256'
| '\u1258'
| '\u125a'..'\u125d'
| '\u1260'..'\u1286'
| '\u1288'
| '\u128a'..'\u128d'
| '\u1290'..'\u12ae'
| '\u12b0'
| '\u12b2'..'\u12b5'
| '\u12b8'..'\u12be'
| '\u12c0'
| '\u12c2'..'\u12c5'
| '\u12c8'..'\u12ce'
| '\u12d0'..'\u12d6'
| '\u12d8'..'\u12ee'
| '\u12f0'..'\u130e'
| '\u1310'
| '\u1312'..'\u1315'
| '\u1318'..'\u131e'
| '\u1320'..'\u1346'
| '\u1348'..'\u135a'
| '\u1369'..'\u1371'
| '\u13a0'..'\u13f4'
| '\u1401'..'\u166c'
| '\u166f'..'\u1676'
| '\u1681'..'\u169a'
| '\u16a0'..'\u16ea'
| '\u16ee'..'\u16f0'
| '\u1700'..'\u170c'
| '\u170e'..'\u1714'
| '\u1720'..'\u1734'
| '\u1740'..'\u1753'
| '\u1760'..'\u176c'
| '\u176e'..'\u1770'
| '\u1772'..'\u1773'
| '\u1780'..'\u17d3'
| '\u17d7'
| '\u17db'..'\u17dd'
| '\u17e0'..'\u17e9'
| '\u180b'..'\u180d'
| '\u1810'..'\u1819'
| '\u1820'..'\u1877'
| '\u1880'..'\u18a9'
| '\u1900'..'\u191c'
| '\u1920'..'\u192b'
| '\u1930'..'\u193b'
| '\u1946'..'\u196d'
| '\u1970'..'\u1974'
| '\u1d00'..'\u1d6b'
| '\u1e00'..'\u1e9b'
| '\u1ea0'..'\u1ef9'
| '\u1f00'..'\u1f15'
| '\u1f18'..'\u1f1d'
| '\u1f20'..'\u1f45'
| '\u1f48'..'\u1f4d'
| '\u1f50'..'\u1f57'
| '\u1f59'
| '\u1f5b'
| '\u1f5d'
| '\u1f5f'..'\u1f7d'
| '\u1f80'..'\u1fb4'
| '\u1fb6'..'\u1fbc'
| '\u1fbe'
| '\u1fc2'..'\u1fc4'
| '\u1fc6'..'\u1fcc'
| '\u1fd0'..'\u1fd3'
| '\u1fd6'..'\u1fdb'
| '\u1fe0'..'\u1fec'
| '\u1ff2'..'\u1ff4'
| '\u1ff6'..'\u1ffc'
| '\u200c'..'\u200f'
| '\u202a'..'\u202e'
| '\u203f'..'\u2040'
| '\u2054'
| '\u2060'..'\u2063'
| '\u206a'..'\u206f'
| '\u2071'
| '\u207f'
| '\u20a0'..'\u20b1'
| '\u20d0'..'\u20dc'
| '\u20e1'
| '\u20e5'..'\u20ea'
| '\u2102'
| '\u2107'
| '\u210a'..'\u2113'
| '\u2115'
| '\u2119'..'\u211d'
| '\u2124'
| '\u2126'
| '\u2128'
| '\u212a'..'\u212d'
| '\u212f'..'\u2131'
| '\u2133'..'\u2139'
| '\u213d'..'\u213f'
| '\u2145'..'\u2149'
| '\u2160'..'\u2183'
| '\u3000'
| '\u3005'..'\u3007'
| '\u3021'..'\u302f'
| '\u3031'..'\u3035'
| '\u3038'..'\u303c'
| '\u3041'..'\u3096'
| '\u3099'..'\u309a'
| '\u309d'..'\u309f'
| '\u30a1'..'\u30ff'
| '\u3105'..'\u312c'
| '\u3131'..'\u318e'
| '\u31a0'..'\u31b7'
| '\u31f0'..'\u31ff'
| '\u3400'..'\u4db5'
| '\u4e00'..'\u9fa5'
| '\ua000'..'\ua48c'
| '\uac00'..'\ud7a3'
| '\uf900'..'\ufa2d'
| '\ufa30'..'\ufa6a'
| '\ufb00'..'\ufb06'
| '\ufb13'..'\ufb17'
| '\ufb1d'..'\ufb28'
| '\ufb2a'..'\ufb36'
| '\ufb38'..'\ufb3c'
| '\ufb3e'
| '\ufb40'..'\ufb41'
| '\ufb43'..'\ufb44'
| '\ufb46'..'\ufbb1'
| '\ufbd3'..'\ufd3d'
| '\ufd50'..'\ufd8f'
| '\ufd92'..'\ufdc7'
| '\ufdf0'..'\ufdfc'
| '\ufe00'..'\ufe0f'
| '\ufe20'..'\ufe23'
| '\ufe33'..'\ufe34'
| '\ufe4d'..'\ufe4f'
| '\ufe69'
| '\ufe70'..'\ufe74'
| '\ufe76'..'\ufefc'
| '\ufeff'
| '\uff04'
| '\uff10'..'\uff19'
| '\uff21'..'\uff3a'
| '\uff3f'
| '\uff41'..'\uff5a'
| '\uff65'..'\uffbe'
| '\uffc2'..'\uffc7'
| '\uffca'..'\uffcf'
| '\uffd2'..'\uffd7'
| '\uffda'..'\uffdc'
| '\uffe0'..'\uffe1'
| '\uffe5'..'\uffe6'
| '\ufff9'..'\ufffb'
// UTF-16 | ('\ud800'..'\udbff') ('\udc00'..'\udfff')
;
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