# Package clauses

package main

==>

SourceFile(PackageClause(package,DefName))

# Single import declarations

import "net/http"
import . "some/dsl"
import _ "os"
import alias "some/package"

==>

SourceFile(
  ImportDecl(import,ImportSpec(String)),
  ImportDecl(import,ImportSpec(".",String)),
  ImportDecl(import,ImportSpec(DefName,String)),
  ImportDecl(import,ImportSpec(DefName,String)))

# Grouped import declarations

import()
import ("fmt")
import (
  "net/http"
  . "some/dsl"
  _ "os"
  alias "some/package"
)

==>

SourceFile(
  ImportDecl(import,SpecList),
  ImportDecl(import,SpecList(ImportSpec(String))),
  ImportDecl(import,SpecList(
    ImportSpec(String),
    ImportSpec(".",String),
    ImportSpec(DefName,String),
    ImportSpec(DefName,String))))

# Block comments
/*
 * This is a great package
 */

==>

SourceFile(BlockComment)

# Comments with asterisks

/* a */
const a

/* b **/
const b

/* c ***/
const c

/* d

***/
const d

==>

SourceFile(
  BlockComment,
  ConstDecl(const,ConstSpec(DefName)),
  BlockComment,
  ConstDecl(const,ConstSpec(DefName)),
  BlockComment,
  ConstDecl(const,ConstSpec(DefName)),
  BlockComment,
  ConstDecl(const,ConstSpec(DefName)))

# Non-ascii variable names

const (
  α
  Α
  µs  // micro sign (not mu)
  δ1
  ΔΔΔ
  ω_omega
  Ω_OMEGA
)

==>

SourceFile(ConstDecl(const,SpecList(
  ConstSpec(DefName),
  ConstSpec(DefName),
  ConstSpec(DefName),LineComment,
  ConstSpec(DefName),
  ConstSpec(DefName),
  ConstSpec(DefName),
  ConstSpec(DefName))))