Cleanup parser statements, add delete and insert statement, add TASKS.md for tracking tasks

sql/parseSelectStatement.go

@@ -0,0 +1,47 @@
+package sql
+
+import "fmt"
+
+func (p *Parser) parseSelect() (*SelectStatement, error) {
+	tok, ok := p.expectOne(ASTERIKS, IDENT)
+	if !ok {
+		return nil, p.unexpectedToken(ASTERIKS, IDENT)
+	}
+
+	fields := make([]string, 1)
+	fields[0] = "*"
+	if tok == IDENT {
+		_, _, n := p.rescan()
+		fields[0] = n
+		for {
+			tok, ok := p.expectOne(COMMA, FROM)
+			if !ok {
+				return nil, p.unexpectedToken(COMMA, FROM)
+			}
+			if tok == FROM {
+				p.unscan()
+				break
+			}
+
+			if !p.expectNext(IDENT) {
+				return nil, p.unexpectedToken(IDENT)
+			}
+			_, _, n := p.rescan()
+			fields = append(fields, n)
+		}
+	}
+
+	if !p.expectSequence(FROM, IDENT) {
+		return nil, p.unexpectedToken()
+	}
+
+	_, _, tableName := p.rescan()
+	if !p.consumeUntilOne(50, SEMI, EOF) {
+		return nil, fmt.Errorf("Expected semicolon but never found after 50 tries")
+	}
+
+	return &SelectStatement{
+		From:   tableName,
+		Fields: fields,
+	}, nil
+}