Merge pull request #40 from yaacov/support-double-eq

allow == in adition to =

Author: yaacov

v6/pkg/parser/lexer.go

@@ -156,7 +156,11 @@ func (l *Lexer) scanToken() error {
 	case '%':
 		l.addToken(PERCENT, "%")
 	case '=':
-		l.addToken(EQ, "=")
+		if l.match('=') {
+			l.addToken(EQ, "==")
+		} else {
+			l.addToken(EQ, "=")
+		}
 	case '<':
 		if l.match('=') {
 			l.addToken(LE, "<=")

v6/pkg/parser/parser.go

@@ -82,6 +82,7 @@ echo "Starting TSL stability tests..."
 
 # Basic Operators (01-10)
 run_test "01_op_equality" "${TSL_BIN} 'name = \"bob\"'"
+run_test "63_op_double_equal" "${TSL_BIN} 'name == \"bob\"'"
 run_test "02_op_inequality" "${TSL_BIN} 'name != \"alice\"'"
 run_test "03_op_greater_than" "${TSL_BIN} 'age > 25'"
 run_test "04_op_less_than" "${TSL_BIN} 'age < 25'"

v6/test/stability_test.sh

@@ -0,0 +1,4 @@
+Parsing: name == "bob"
+[EQ]
+  [IDENTIFIER]: name
+  [STRING]: bob