1 package org.simantics.scl.compiler.internal.parsing.parser;
3 import org.simantics.scl.compiler.internal.parsing.Token;
4 import org.simantics.scl.compiler.errors.Locations;
5 import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;
6 import gnu.trove.list.array.TIntArrayList;
16 %yylexthrow SCLSyntaxErrorException
17 %scanerror RuntimeException
19 return sym(SCLTerminals.EOF);
23 public SCLParserOptions options = SCLParserOptions.DEFAULT;
25 TIntArrayList parenCountStack = new TIntArrayList(2);
27 TIntArrayList stateStack = new TIntArrayList(2);
29 StringBuffer string = new StringBuffer();
31 private Token sym(int id) {
32 return new Token(id, yychar, yychar+yylength(), yytext());
34 private Token sym(int id, String text) {
35 return new Token(id, yychar, yychar+yylength(), text);
41 hexDigit = [0-9a-fA-F]
42 id_char = {letter} | {digit} | "'"
43 ord_symbol_char = [!$%&*+\/<=>?@\\\^|\-:~]
44 symbol_char = {ord_symbol_char} | "#"
46 prefix = {letter} {id_char}* "."
48 annotation_id = "@" {letter} {id_char}*
50 id = {prefix}* ("?")? {letter} {id_char}*
52 symbol = {ord_symbol_char}+ | {symbol_char}{symbol_char}+ | "#" [ \n\r]+
53 separatedDot = "." [ \n\r]+
54 escaped_symbol_inner = {symbol_char}+ | "."
55 escaped_symbol = "(" {escaped_symbol_inner} ")"
56 escaped_id = "`" {id} "`"
57 queryOp = "<" [&|!?] ">"
59 float = {digit}+ "." {digit}+ ([eE] ("-")? {digit}+)?
60 | {digit}+ [eE] ("-")? {digit}+
62 c_comment = "//" [^\n\r]*
63 cpp_comment = "/*" ~"*/"
65 //xmlName = {letter} ({letter} | {digit} | [-.])*
66 existentialVar = "?" {letter} {id_char}*
68 char_literal = "'" ([^'\\\ufffd] | "\\" [^\ufffd]) "'"
79 {c_comment} { return sym(SCLTerminals.COMMENT); }
80 {cpp_comment} { return sym(SCLTerminals.COMMENT); }
81 forall { return sym(SCLTerminals.FORALL); }
82 if { return sym(SCLTerminals.IF); }
83 then { return sym(SCLTerminals.THEN); }
84 else { return sym(SCLTerminals.ELSE); }
85 where { return sym(SCLTerminals.WHERE); }
86 when { return sym(SCLTerminals.WHEN); }
87 rule { return sym(SCLTerminals.RULE); }
88 abstract{whitespace}rule { return sym(SCLTerminals.ABSTRACT_RULE); }
89 extends { return sym(SCLTerminals.EXTENDS); }
90 mapping{whitespace}relation { return sym(SCLTerminals.MAPPING_RELATION); }
91 transformation { return sym(SCLTerminals.TRANSFORMATION); }
92 select{whitespace}first { return sym(SCLTerminals.SELECT_FIRST); }
93 select{whitespace}distinct { return sym(SCLTerminals.SELECT_DISTINCT); }
94 select { return sym(SCLTerminals.SELECT); }
95 enforce { return sym(SCLTerminals.ENFORCE); }
96 do { return sym(SCLTerminals.DO); }
97 eq { return sym(options.supportEq ? SCLTerminals.EQ : SCLTerminals.ID); }
98 mdo { return sym(SCLTerminals.MDO); }
99 class { return sym(SCLTerminals.CLASS); }
100 effect { return sym(SCLTerminals.EFFECT); }
101 match { return sym(SCLTerminals.MATCH); }
102 with { return sym(SCLTerminals.WITH); }
103 let { return sym(SCLTerminals.LET); }
104 in { return sym(SCLTerminals.IN); }
105 instance { return sym(SCLTerminals.INSTANCE); }
106 deriving { return sym(SCLTerminals.DERIVING); }
107 data { return sym(SCLTerminals.DATA); }
108 type { return sym(SCLTerminals.TYPE); }
109 infixl { return sym(SCLTerminals.INFIXL); }
110 infixr { return sym(SCLTerminals.INFIXR); }
111 infix { return sym(SCLTerminals.INFIX); }
112 include { return sym(SCLTerminals.INCLUDE); }
113 import { return sym(SCLTerminals.IMPORT); }
114 importJava { return sym(SCLTerminals.IMPORTJAVA); }
115 hiding { return sym(SCLTerminals.HIDING); }
116 // relation { return sym(SCLTerminals.RELATION); }
117 as { return sym(SCLTerminals.AS); }
118 by { return sym(SCLTerminals.BY); }
119 {queryOp} { return sym(SCLTerminals.QUERY_OP); }
120 "@" { return sym(SCLTerminals.AT); }
121 "{" { return sym(SCLTerminals.LBRACE); }
122 "}" { return sym(SCLTerminals.RBRACE); }
123 "(" { ++parenCount; return sym(SCLTerminals.LPAREN); }
125 if(parenCount == 0 && !parenCountStack.isEmpty()) {
126 parenCount = parenCountStack.removeAt(parenCountStack.size()-1);
129 yybegin(stateStack.removeAt(stateStack.size()-1));
130 return sym(SCLTerminals.CONTINUE_STRING);
133 return sym(SCLTerminals.RPAREN);
135 "[" { return sym(SCLTerminals.LBRACKET); }
136 "]" { return sym(SCLTerminals.RBRACKET); }
137 "->" { return sym(SCLTerminals.ARROW); }
138 "<-" { return sym(SCLTerminals.BINDS); }
139 "=>" { return sym(SCLTerminals.IMPLIES); }
140 ":-" { return sym(SCLTerminals.FOLLOWS); }
141 "," { return sym(SCLTerminals.COMMA); }
142 ".." { return sym(SCLTerminals.DOTDOT, "."); }
143 {separatedDot} { return sym(SCLTerminals.SEPARATED_DOT, "."); }
144 "." { return sym(SCLTerminals.ATTACHED_DOT, "."); }
145 "-" { return sym(SCLTerminals.MINUS, "-"); }
146 // "<" existentialVar ">" { yybegin(XML); return sym(SCLTerminals.XML_BEGIN); }
147 "<" { return sym(SCLTerminals.LESS, "<"); }
148 ">" { return sym(SCLTerminals.GREATER, ">"); }
149 ";" { return sym(SCLTerminals.SEMICOLON); }
150 "|" { return sym(SCLTerminals.BAR); }
151 "=" { return sym(SCLTerminals.EQUALS); }
152 "::" { return sym(SCLTerminals.HASTYPE); }
153 ":" { return sym(SCLTerminals.COLON); }
154 "\\" { return sym(SCLTerminals.LAMBDA); }
155 "\"\"\"" { string.setLength(0); stringStart=yychar; yybegin(LONG_STRING); return sym(SCLTerminals.BEGIN_STRING); }
156 "\"" { string.setLength(0); stringStart=yychar; yybegin(STRING); return sym(SCLTerminals.BEGIN_STRING); }
157 {char_literal} { return sym(SCLTerminals.CHAR); }
158 "_" { return sym(SCLTerminals.BLANK); }
159 {id} { return sym(SCLTerminals.ID); }
160 {annotation_id} { return sym(SCLTerminals.ANNOTATION_ID); }
161 {escaped_symbol} { String text = yytext();
162 return sym(SCLTerminals.ID, text.substring(1, text.length()-1));
164 {escaped_id} { String text = yytext();
165 return sym(SCLTerminals.SYMBOL, text.substring(1, text.length()-1));
167 {symbol} { return sym(SCLTerminals.SYMBOL, yytext().trim()); }
168 "#" { return sym(SCLTerminals.ATTACHED_HASH, "#"); }
169 {float} { return sym(SCLTerminals.FLOAT); }
170 {integer} { return sym(SCLTerminals.INTEGER); }
172 \R { return new Token(SCLTerminals.EOL, yychar, yychar+yylength(), ""); }
173 \ufffd { throw new SCLSyntaxErrorException(Locations.location(yychar, yychar+1), "Character does not conform to UTF-8 encoding."); }
174 \t { throw new SCLSyntaxErrorException(Locations.location(yychar, yychar+1), "Tabulator is not allowed except inside string literals."); }
175 . { throw new SCLSyntaxErrorException(Locations.location(yychar, yychar+1), "Illegal character '" + yytext() + "'."); }
179 \" { yybegin(YYINITIAL);
180 return new Token(SCLTerminals.END_STRING, stringStart, yychar+1, string.toString());
182 [^\n\r\"\\\ufffd]+ { string.append( yytext() ); }
183 \\t { string.append('\t'); }
184 \\n { string.append('\n'); }
186 \\r { string.append('\r'); }
187 \\u{hexDigit}{hexDigit}{hexDigit}{hexDigit} { string.append((char)Integer.parseInt(yytext().substring(2), 16)); }
188 \\\( { parenCountStack.add(parenCount);
190 stateStack.add(STRING);
192 return new Token(SCLTerminals.SUSPEND_STRING, stringStart, yychar+1, string.toString());
194 \ufffd { throw new SCLSyntaxErrorException(Locations.location(yychar, yychar+1), "Character does not conform to UTF-8 encoding."); }
195 \\[\'\"\\] { string.append(yytext().substring(1)); }
196 \\. { throw new SCLSyntaxErrorException(Locations.location(stringStart, yychar), "Illegal string escape character."); }
197 \R { throw new SCLSyntaxErrorException(Locations.location(stringStart, yychar), "Unclosed string literal."); }
198 <<EOF>> { throw new SCLSyntaxErrorException(Locations.location(stringStart, yychar), "Unclosed string literal."); }
202 "\"\"\"" { yybegin(YYINITIAL);
203 return new Token(SCLTerminals.END_STRING, stringStart, yychar+3, string.toString());
205 \R { string.append('\n'); }
206 [^\"\n\r\\\ufffd]+ { string.append( yytext() ); }
207 \\\( { parenCountStack.add(parenCount);
209 stateStack.add(LONG_STRING);
211 return new Token(SCLTerminals.SUSPEND_STRING, stringStart, yychar+1, string.toString());
213 [\"\\] { string.append( yytext() ); }
214 \ufffd { throw new SCLSyntaxErrorException(Locations.location(yychar, yychar+1), "Character does not conform to UTF-8 encoding."); }
215 . { throw new SCLSyntaxErrorException(Locations.location(stringStart, yychar), "Unclosed string literal."); }
216 <<EOF>> { throw new SCLSyntaxErrorException(Locations.location(stringStart, yychar), "Unclosed string literal."); }
221 "<" {xmlName} { yybegin(XML_TAG); return sym(SCLTerminals.XML_TAG_BEGIN); }
222 "</" {xmlName} ">" { return sym(SCLTerminals.XML_CLOSING_TAG); }
223 "</" {existentialVar} ">" { yybegin(YYINITIAL); return sym(SCLTerminals.XML_END); }
224 [^<]+ { return sym(SCLTerminals.XML_TEXT); }
228 "/>" { return sym(SCLTerminals.XML_EMPTY_TAG_END); }
229 ">" { return sym(SCLTerminals.XML_TAG_END); }
230 {xmlName} { return sym(SCLTerminals.XML_ATTRIBUTE); }
231 {existentialVar} { return sym(SCLTerminals.XML_EXISTENTIAL_VAR); }
232 "=" { return sym(SCLTerminals.EQUALS); }
233 "\"" [^\"]* "\"" { String text = yytext();
234 return sym(SCLTerminals.STRING, text.substring(1, text.length()-1)); }
235 "'" [^\']* "'" { String text = yytext();
236 return sym(SCLTerminals.STRING, text.substring(1, text.length()-1)); }