initial

1 files changed, 80 insertions, 0 deletions

diff --git a/token.go b/token.go
new file mode 100644
index 0000000..aa8047e
--- /dev/null
+++ b/token.go
@@ -0,0 +1,80 @@
+package lexpr
+
+type Token struct {
+	typ       lexType
+	value     string
+	ivalue    int
+	priority  int
+	leftAssoc bool
+}
+
+func (t Token) Number() (int, bool) {
+	return t.ivalue, t.typ == number
+}
+
+func (t Token) String() (string, bool) {
+	return t.value, t.typ == str
+}
+
+func (t Token) Word() (string, bool) {
+	return t.value, t.typ == word
+}
+
+func TokenFromAny(variable any) (Token, bool) {
+	if s, ok := variable.(string); ok {
+		return Token{
+			typ:   str,
+			value: s,
+		}, true
+	}
+	if n, ok := variable.(int); ok {
+		return Token{
+			typ:    number,
+			ivalue: n,
+		}, true
+	}
+	if n, ok := variable.(float64); ok {
+		return Token{
+			typ:    number,
+			ivalue: int(n),
+		}, true
+	}
+	if n, ok := variable.(float32); ok {
+		return Token{
+			typ:    number,
+			ivalue: int(n),
+		}, true
+	}
+	if b, ok := variable.(bool); ok {
+		n := 0
+		if b {
+			n = 1
+		}
+		return Token{
+			typ:    number,
+			ivalue: n,
+		}, true
+	}
+	return Token{}, false
+}
+
+func TokenFromWord(wordName string) Token {
+	return Token{
+		typ:   word,
+		value: wordName,
+	}
+}
+
+func TokenFromString(s string) Token {
+	return Token{
+		typ:   str,
+		value: s,
+	}
+}
+
+func TokenFromInt(n int) Token {
+	return Token{
+		typ:    number,
+		ivalue: n,
+	}
+}