chore: fix readme code

Signed-off-by: azjezz <azjezz@protonmail.com>

README.md

@@ -26,13 +26,29 @@ cargo add php-parser-rs
 ### Example
 
 ```rust
-use php_parser_rs::*;
+use php_parser_rs::prelude::*;
 
-let mut lexer = Lexer::new(None);
-let tokens = lexer.tokenize(&source_code[..]).unwrap();
+fn main() -> ParseResult<()> {
+    let lexer = Lexer::new();
+    let parser = Parser::new();
 
-let mut parser = Parser::new(None);
-let ast = parser.parse(tokens).unwrap();
+    let code = "
+<?php
+
+function hello(): void {
+    echo 'Hello, World!';
+}
+
+hello();
+    ";
+
+    let tokens = lexer.tokenize(code.as_bytes())?;
+    let ast = parser.parse(tokens)?;
+
+    dbg!(ast);
+
+    Ok(())
+}
 ```
 
 

src/main.rs

@@ -1,7 +1,6 @@
-use php_parser_rs::prelude::Lexer;
-use php_parser_rs::prelude::Parser;
+use php_parser_rs::prelude::*;
 
-fn main() {
+fn main() -> ParseResult<()> {
     let file = match std::env::args().nth(1) {
         Some(file) => file,
         None => {
@@ -21,24 +20,13 @@ fn main() {
     };
 
     let lexer = Lexer::new();
-    let tokens = match lexer.tokenize(contents.as_bytes()) {
-        Ok(tokens) => tokens,
-        Err(error) => {
-            println!("{}", error);
-
-            ::std::process::exit(1);
-        }
-    };
-
     let parser = Parser::new();
-    let ast = match parser.parse(tokens) {
-        Ok(ast) => ast,
-        Err(error) => {
-            println!("{}", error);
 
-            ::std::process::exit(1);
-        }
-    };
+    let tokens = lexer.tokenize(contents.as_bytes())?;
+
+    let ast = parser.parse(tokens)?;
 
     dbg!(ast);
+
+    Ok(())
 }

src/parser/error.rs

@@ -1,5 +1,6 @@
 use std::fmt::Display;
 
+use crate::lexer::error::SyntaxError;
 use crate::lexer::token::Span;
 use crate::parser::ast::Type;
 
@@ -7,6 +8,7 @@ pub type ParseResult<T> = Result<T, ParseError>;
 
 #[derive(Debug, Eq, PartialEq)]
 pub enum ParseError {
+    SyntaxError(SyntaxError),
     ExpectedToken(Vec<String>, Option<String>, Span),
     MultipleModifiers(String, Span),
     MultipleAccessModifiers(Span),
@@ -39,9 +41,16 @@ pub enum ParseError {
     NestedDisjunctiveNormalFormTypes(Span),
 }
 
+impl From<SyntaxError> for ParseError {
+    fn from(e: SyntaxError) -> Self {
+        ParseError::SyntaxError(e)
+    }
+}
+
 impl Display for ParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
+            Self::SyntaxError(e) => e.fmt(f),
             Self::ExpectedToken(expected, found, span) => {
                 let length  = expected.len();
                 let expected = if length >= 2 {

src/parser/internal/classish.rs

@@ -30,24 +30,23 @@ impl Parser {
             has_parent = true;
         }
 
-        scoped!(
+        let implements = if state.current.kind == TokenKind::Implements {
+            state.next();
+
+            self.at_least_one_comma_separated::<Identifier>(state, &|parser, state| {
+                parser.full_name(state)
+            })?
+        } else {
+            Vec::new()
+        };
+
+        let attributes = state.get_attributes();
+        self.lbrace(state)?;
+
+        let body = scoped!(
             state,
             Scope::Class(name.clone(), flags.clone(), has_parent),
             {
-                let implements = if state.current.kind == TokenKind::Implements {
-                    state.next();
-
-                    self.at_least_one_comma_separated::<Identifier>(state, &|parser, state| {
-                        parser.full_name(state)
-                    })?
-                } else {
-                    Vec::new()
-                };
-
-                self.lbrace(state)?;
-
-                let attributes = state.get_attributes();
-
                 let mut body = Vec::new();
                 while state.current.kind != TokenKind::RightBrace {
                     state.gather_comments();
@@ -59,18 +58,21 @@ impl Parser {
 
                     body.push(self.class_like_statement(state)?);
                 }
-                self.rbrace(state)?;
 
-                Ok(Statement::Class {
-                    name,
-                    attributes,
-                    extends,
-                    implements,
-                    body,
-                    flags,
-                })
+                body
             }
-        )
+        );
+
+        self.rbrace(state)?;
+
+        Ok(Statement::Class {
+            name,
+            attributes,
+            extends,
+            implements,
+            body,
+            flags,
+        })
     }
 
     pub(in crate::parser) fn interface_definition(

src/parser/internal/namespace.rs

@@ -49,8 +49,8 @@ impl Parser {
                 body.push(self.top_level_statement(state)?);
             }
 
-            Ok(body)
-        })?;
+            body
+        });
 
         Ok(Statement::Namespace { name, body })
     }
@@ -68,8 +68,8 @@ impl Parser {
                 body.push(self.top_level_statement(state)?);
             }
 
-            Ok(body)
-        })?;
+            body
+        });
 
         self.rbrace(state)?;
 

src/parser/macros.rs

@@ -125,10 +125,10 @@ macro_rules! scoped {
         let scope = $scope;
         $state.enter(scope.clone());
 
-        let result = $block?;
+        let result = $block;
 
         $state.exit();
 
-        Ok(result)
+        result
     }};
 }