From b8e8fc8b6e64a393c1ca7b5395b28486c3f833f9 Mon Sep 17 00:00:00 2001
From: tijani <tijani@tijanilawal.com>
Date: Thu, 26 May 2022 16:35:08 +0000
Subject: [PATCH] Stubborn bug, could not figure out what causing it. Will just
 re-write the entire thing.

```panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x10 pc=0xbcf660]

goroutine 6 [running]:
testing.tRunner.func1.2({0xbe4c60, 0xce2c10})
        C:/Program Files/Go/src/testing/testing.go:1389 +0x24e
testing.tRunner.func1()
        C:/Program Files/Go/src/testing/testing.go:1392 +0x39f
panic({0xbe4c60, 0xce2c10})
        C:/Program Files/Go/src/runtime/panic.go:838 +0x207
monkey/ast.(*LetStatement).TokenLiteral(0xc000022940?)
        D:/monkey/ast/ast.go:37
monkey/parser.testLetStatement(0xc000132000, {0xc32638, 0x0}, {0xc0106a, 0x1})
        D:/monkey/parser/parser_test.go:43 +0x49
monkey/parser.TestLetStatements(0xc000132000)
        D:/monkey/parser/parser_test.go:36 +0x1ba
testing.tRunner(0xc000132000, 0xc0d940)
        C:/Program Files/Go/src/testing/testing.go:1439 +0x102
created by testing.(*T).Run
        C:/Program Files/Go/src/testing/testing.go:1486 +0x35f
FAIL    monkey/parser   0.180s
FAIL
```

git-svn-id: https://svn.tlawal.org/svn/monkey@16 f6afcba9-9ef1-4bdd-9b72-7484f5705bac
---
 parser/parser.go      | 35 -----------------------
 parser/parser_test.go | 64 -------------------------------------------
 2 files changed, 99 deletions(-)
 delete mode 100644 parser/parser.go
 delete mode 100644 parser/parser_test.go

diff --git a/parser/parser.go b/parser/parser.go
deleted file mode 100644
index 24a2412..0000000
--- a/parser/parser.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package parser
-
-import (
-	"monkey/ast"
-	"monkey/lexer"
-	"monkey/token"
-)
-
-type Parser struct {
-	lexer *lexer.Lexer
-
-	current_token token.Token
-	peek_token    token.Token
-}
-
-func New(l_lexer *lexer.Lexer) *Parser {
-	l_parser := &Parser{lexer: l_lexer}
-
-	// Read two tokens, one for curren_token and another for peek_token
-	l_parser.next_token()
-	l_parser.next_token()
-
-	return l_parser
-}
-
-// When this is first called, current_token and peek_token should point to the same
-// token
-func (l_parser *Parser) next_token() {
-	l_parser.current_token = l_parser.peek_token
-	l_parser.peek_token = l_parser.lexer.NextToken()
-}
-
-func (l_parser *Parser) ParseProgram() *ast.Program {
-	return nil
-}
diff --git a/parser/parser_test.go b/parser/parser_test.go
deleted file mode 100644
index 7b78698..0000000
--- a/parser/parser_test.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package parser
-
-import (
-	"monkey/ast"
-	"monkey/lexer"
-	"testing"
-)
-
-func TestLetStatements(t *testing.T) {
-	input := `
-   let x = 5;
-   let y = 10;
-   let foobar = 839893;
-  `
-
-	l_lexer := lexer.New(input)
-	l_parser := New(l_lexer)
-
-	program := l_parser.ParseProgram()
-	if program == nil {
-		t.Fatalf("ParseProgram() returned nil")
-	}
-
-	if len(program.Statements) != 3 {
-		t.Fatalf("program.Statements does not contail 3 statements, got=%d", len(program.Statements))
-	}
-
-	tests := []struct {
-		expectedIdentifier string
-	}{
-		{"x"}, {"y"}, {"foobar"},
-	}
-
-	for i, tt := range tests {
-		stmt := program.Statements[i]
-		if !testLetStatement(t, stmt, tt.expectedIdentifier) {
-			return
-		}
-	}
-}
-
-func testLetStatement(t *testing.T, s ast.Statement, name string) bool {
-	if s.TokenLiteral() != "let" {
-		t.Errorf("s.TokenLiteral not 'let', got=%q", s.TokenLiteral())
-		return false
-	}
-
-	letStmt, ok := s.(*ast.LetStatement)
-	if !ok {
-		t.Errorf("s not *ast.LetStatement, got=%T", s)
-		return false
-	}
-
-	if letStmt.Name.TokenLiteral() != name {
-		t.Errorf("letStmt.Name.TokenLiteral() not '%s', got =%s", name, letStmt.Name.TokenLiteral())
-		return false
-	}
-
-	if letStmt.Name.Value != name {
-		t.Errorf("letStmt.Name.Value not '%s', got =%s", name, letStmt.Name.Value)
-		return false
-	}
-	return true
-}