Implement if statements and regex lexer

2021-03-01 19:43:06 -08:00
parent d552836b2c
commit 745920b139
4 changed files with 104 additions and 56 deletions
--- a/lexer.go
+++ b/lexer.go
@@ -0,0 +1,17 @@
+package scpt
+
+import (
+	"github.com/alecthomas/participle/lexer"
+	"github.com/alecthomas/participle/lexer/stateful"
+)
+
+// Create custom stateful regex lexer
+var scptLexer = lexer.Must(stateful.NewSimple([]stateful.Rule{
+	{"Ident", `[a-zA-Z]\w*`, nil},
+	{"String", `"[^"]*"`, nil},
+	{"Number", `(?:\d*\.)?\d+`, nil},
+	{"Punct", `[-[!@#$&()_{}\|:;"',.?/]|]`, nil},
+	{"Whitespace", `[ \t\r\n]+`, nil},
+	{"Comment", `#[^\n]+`, nil},
+	{"Operator", `(>=|<=|>|<|==|!=)|[-+*/^%]`, nil},
+}))