From bf8715bfd64d365bb3d1dccfbca5cb9d44f7854a Mon Sep 17 00:00:00 2001
From: Daniel Hornung <d.hornung@indiscale.com>
Date: Fri, 12 Jun 2020 14:13:24 +0200
Subject: [PATCH] Dummy...
---
.../caosdb/server/query/test/DatetimeLexer.g4 | 86 +++++++++++++++++++
.../server/query/test/DatetimeParser.g4 | 63 ++++++++++++++
2 files changed, 149 insertions(+)
create mode 100644 src/main/java/caosdb/server/query/test/DatetimeLexer.g4
create mode 100644 src/main/java/caosdb/server/query/test/DatetimeParser.g4
diff --git a/src/main/java/caosdb/server/query/test/DatetimeLexer.g4 b/src/main/java/caosdb/server/query/test/DatetimeLexer.g4
new file mode 100644
index 00000000..b4c5d4db
--- /dev/null
+++ b/src/main/java/caosdb/server/query/test/DatetimeLexer.g4
@@ -0,0 +1,86 @@
+lexer grammar DatetimeLexer;
+
+
+NUM:
+ ('0' .. '9')+
+ ;
+
+HYPHEN:
+ '-'
+ ;
+
+TXT:
+ ('a'..'z' | 'A'..'Z' | '_' | '-' {_input.LA(1) != '>'}? | '+' | '&' | ';' | ',' | '$' | ':' | '%' | '^' | '~' {_input.LA(1) != '='}? | '`' | '´' | 'ö' | 'ä' | 'ß' | 'ü' | 'Ö' | 'Ä' | 'Ü' | '@' | '[' | ']' | '{' | '}' )+
+;
+
+COLON:
+ ':'
+ ;
+
+DOT:
+ '.'
+ ;
+
+fragment
+ESC_MARKER:
+ '\\'
+;
+
+fragment
+DOUBLE_QUOTE:
+ '"'
+;
+
+fragment
+SINGLE_QUOTE:
+ '\''
+;
+
+
+SINGLE_QUOTE_START:
+ '\'' -> pushMode(SINGLE_QUOTE_MODE)
+;
+
+DOUBLE_QUOTE_START:
+ '"' -> pushMode(DOUBLE_QUOTE_MODE)
+;
+
+mode SINGLE_QUOTE_MODE;
+
+ SINGLE_QUOTE_ESCAPED_CHAR:
+ ESC_MARKER
+ ( '\'' | '\\' | '*' )
+ ;
+
+ SINGLE_QUOTE_END:
+ '\'' -> mode(DEFAULT_MODE)
+ ;
+
+ SINGLE_QUOTE_STAR:
+ '*'
+ ;
+
+ SINGLE_QUOTE_ANY_CHAR:
+ ~('\''|'\\'|'*')+
+ ;
+
+mode DOUBLE_QUOTE_MODE;
+
+ DOUBLE_QUOTE_ESCAPED_CHAR:
+ ESC_MARKER
+ ( '"' | '\\' | '*' )
+ ;
+
+ DOUBLE_QUOTE_END:
+ '"' -> mode(DEFAULT_MODE)
+ ;
+
+ DOUBLE_QUOTE_STAR:
+ '*'
+ ;
+
+ DOUBLE_QUOTE_ANY_CHAR:
+ ~('"'|'\\'|'*')+
+ ;
+
+
diff --git a/src/main/java/caosdb/server/query/test/DatetimeParser.g4 b/src/main/java/caosdb/server/query/test/DatetimeParser.g4
new file mode 100644
index 00000000..0f5c74fd
--- /dev/null
+++ b/src/main/java/caosdb/server/query/test/DatetimeParser.g4
@@ -0,0 +1,63 @@
+parser grammar DatetimeParser;
+
+options { tokenVocab = DatetimeLexer; }
+
+datetime:
+ (
+ double_quoted_datetime
+ | single_quoted_datetime
+ | iso_datetime
+ )
+ ;
+
+single_quoted_datetime returns [String text] locals [StringBuffer sb]
+ @init{$sb = new StringBuffer();}
+ @after{$text = $sb.toString();}
+ :
+ SINGLE_QUOTE_START
+ (
+ d = iso_datetime {$sb.append($d.text);}
+ )
+ SINGLE_QUOTE_END
+ ;
+
+
+
+double_quoted_datetime returns [String text] locals [StringBuffer sb]
+ @init{$sb = new StringBuffer();}
+ @after{$text = $sb.toString(); }
+:
+ DOUBLE_QUOTE_START
+ (
+ d = iso_datetime { $sb.append($d.text); }
+ )
+ DOUBLE_QUOTE_END
+;
+
+
+
+
+iso_datetime
+:
+ NUM // year
+ (
+ HYPHEN NUM // mon
+ (
+ HYPHEN NUM // day of mon
+ (
+ (m=TXT {$m.text.equals("T")}?)?// compliance with iso datetime
+ NUM // hour
+ (
+ COLON NUM // minut
+ (
+ COLON NUM // sec
+ (
+ DOT NUM // millisec
+ )?
+ )?
+ )?
+ )?
+ )?
+ )?
+;
+
--
GitLab