From 900fb0aee0b68cbb88f578f20019738b4416f436 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Mon, 4 Nov 2019 10:27:29 +0100
Subject: Add query language interpreter code

---
 .../edu/mimuw/cloudatlas/interpreter/query/Yylex   | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/interpreter/query/Yylex

(limited to 'src/main/java/pl/edu/mimuw/cloudatlas/interpreter/query/Yylex')

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/query/Yylex b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/query/Yylex
new file mode 100644
index 0000000..4dd8029
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/query/Yylex
@@ -0,0 +1,76 @@
+// This JLex file was machine-generated by the BNF converter
+package pl.edu.mimuw.mmws.cloudatlas.query;
+
+import java_cup.runtime.*;
+%%
+%cup
+%unicode
+%line
+%public
+%{
+  String pstring = new String();
+  public int line_num() { return (yyline+1); }
+  public String buff() { return new String(yy_buffer,yy_buffer_index,10).trim(); }
+%}
+LETTER = ({CAPITAL}|{SMALL})
+CAPITAL = [A-Z\xC0-\xD6\xD8-\xDE]
+SMALL = [a-z\xDF-\xF6\xF8-\xFF]
+DIGIT = [0-9]
+IDENT = ({LETTER}|{DIGIT}|['_])
+%state COMMENT
+%state CHAR
+%state CHARESC
+%state CHAREND
+%state STRING
+%state ESCAPED
+%%
+<YYINITIAL>; { return new Symbol(sym._SYMB_0); }
+<YYINITIAL>, { return new Symbol(sym._SYMB_1); }
+<YYINITIAL>\+ { return new Symbol(sym._SYMB_2); }
+<YYINITIAL>- { return new Symbol(sym._SYMB_3); }
+<YYINITIAL>\* { return new Symbol(sym._SYMB_4); }
+<YYINITIAL>/ { return new Symbol(sym._SYMB_5); }
+<YYINITIAL>% { return new Symbol(sym._SYMB_6); }
+<YYINITIAL>\( { return new Symbol(sym._SYMB_7); }
+<YYINITIAL>\) { return new Symbol(sym._SYMB_8); }
+<YYINITIAL>> { return new Symbol(sym._SYMB_9); }
+<YYINITIAL>= { return new Symbol(sym._SYMB_10); }
+<YYINITIAL><> { return new Symbol(sym._SYMB_11); }
+<YYINITIAL>< { return new Symbol(sym._SYMB_12); }
+<YYINITIAL><= { return new Symbol(sym._SYMB_13); }
+<YYINITIAL>>= { return new Symbol(sym._SYMB_14); }
+<YYINITIAL>AND { return new Symbol(sym._SYMB_15); }
+<YYINITIAL>AS { return new Symbol(sym._SYMB_16); }
+<YYINITIAL>ASC { return new Symbol(sym._SYMB_17); }
+<YYINITIAL>BY { return new Symbol(sym._SYMB_18); }
+<YYINITIAL>DESC { return new Symbol(sym._SYMB_19); }
+<YYINITIAL>FIRST { return new Symbol(sym._SYMB_20); }
+<YYINITIAL>LAST { return new Symbol(sym._SYMB_21); }
+<YYINITIAL>NOT { return new Symbol(sym._SYMB_22); }
+<YYINITIAL>NULLS { return new Symbol(sym._SYMB_23); }
+<YYINITIAL>OR { return new Symbol(sym._SYMB_24); }
+<YYINITIAL>ORDER { return new Symbol(sym._SYMB_25); }
+<YYINITIAL>REGEXP { return new Symbol(sym._SYMB_26); }
+<YYINITIAL>SELECT { return new Symbol(sym._SYMB_27); }
+<YYINITIAL>WHERE { return new Symbol(sym._SYMB_28); }
+
+<YYINITIAL>true|false { return new Symbol(sym.QBool, yytext().intern()); }
+<YYINITIAL>({LETTER}|&)({LETTER}|{DIGIT}|_)* { return new Symbol(sym.QIdent, yytext().intern()); }
+<YYINITIAL>{DIGIT}*\.{DIGIT}+([eE]-?{DIGIT}+)?|{DIGIT}+([eE]-?{DIGIT}+) { return new Symbol(sym.QDouble, yytext().intern()); }
+<YYINITIAL>0|[123456789]{DIGIT}* { return new Symbol(sym.QInteger, yytext().intern()); }
+
+<YYINITIAL>"\"" { yybegin(STRING); }
+<STRING>\\ { yybegin(ESCAPED); }
+<STRING>\" { String foo = pstring; pstring = new String(); yybegin(YYINITIAL); return new Symbol(sym._STRING_, foo.intern()); }
+<STRING>.  { pstring += yytext(); }
+<ESCAPED>n { pstring +=  "\n"; yybegin(STRING); }
+<ESCAPED>\" { pstring += "\""; yybegin(STRING); }
+<ESCAPED>\\ { pstring += "\\"; yybegin(STRING); }
+<ESCAPED>t  { pstring += "\t"; yybegin(STRING); }
+<ESCAPED>.  { pstring += yytext(); yybegin(STRING); }
+
+
+
+
+
+<YYINITIAL>[ \t\r\n\f] { /* ignore white space. */ }
-- 
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