o Improved parser.

2 files changed, 45 insertions, 0 deletions

diff --git a/cmake/elfinfo/src/main/antlr4/Test1Lexer.g4 b/cmake/elfinfo/src/main/antlr4/Test1Lexer.g4
new file mode 100644
index 0000000..142229d
--- /dev/null
+++ b/cmake/elfinfo/src/main/antlr4/Test1Lexer.g4
@@ -0,0 +1,22 @@
+lexer grammar Test1Lexer;
+
+channels {
+  WHITESPACE_CHANNEL
+}
+
+NAME : [a-z]+;
+
+// Characters
+C_PLUS  : '+';
+C_MINUS : '-';
+C_QUOTE : '"' -> skip, pushMode(STRING);
+
+//SPACE : [ ];
+
+WS
+  : [ \t\r\n]+ -> channel(WHITESPACE_CHANNEL)
+  ;
+
+mode STRING;
+STRING_ANY : ~'"';
+STRING_END_QUOTE : '"' -> skip, popMode;
diff --git a/cmake/elfinfo/src/main/antlr4/Test1Parser.g4 b/cmake/elfinfo/src/main/antlr4/Test1Parser.g4
new file mode 100644
index 0000000..affdfe5
--- /dev/null
+++ b/cmake/elfinfo/src/main/antlr4/Test1Parser.g4
@@ -0,0 +1,23 @@
+parser grammar Test1Parser;
+
+options {
+  tokenVocab = Test1Lexer;
+}
+
+name
+  : NAME
+  | STRING_ANY*
+  ;
+
+file
+  : stmt*
+  ;
+
+stmt
+  : expr
+  ;
+
+expr
+  : name C_PLUS name
+  | name C_MINUS name
+  ;