update readme.me

master
Bill 2 years ago
parent 7565bcbde4
commit b133373471

2
.gitignore vendored

@ -85,4 +85,4 @@ Backup*/
UpgradeLog*.XML
UpgradeLog*.htm
a.out

@ -1119,7 +1119,7 @@ void PARSE() {
while (I < instructions.size())
{
cout << "\n inst "<< I << '\n';
// cout << "\n inst "<< I << '\n';
switch (instructions[I] ->nop)
{
case INT:

@ -23,7 +23,7 @@
<Keyword>Win32Proj</Keyword>
<RootNamespace>ConsoleApplication18</RootNamespace>
<WindowsTargetPlatformVersion>10.0.17763.0</WindowsTargetPlatformVersion>
<ProjectName>BadassPascal</ProjectName>
<ProjectName>AwesomePascal</ProjectName>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@ -157,7 +157,7 @@
</Link>
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="BadassPascal.cpp" />
<ClCompile Include="AwesomePascal.cpp" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">

@ -1,28 +0,0 @@

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 14
VisualStudioVersion = 14.0.23107.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BadassPascal", "BadassPascal\BadassPascal.vcxproj", "{62CCFC20-46DF-4039-97A5-AA068BD6A016}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
Debug|x86 = Debug|x86
Release|x64 = Release|x64
Release|x86 = Release|x86
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Debug|x64.ActiveCfg = Debug|x64
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Debug|x64.Build.0 = Debug|x64
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Debug|x86.ActiveCfg = Debug|Win32
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Debug|x86.Build.0 = Debug|Win32
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Release|x64.ActiveCfg = Release|x64
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Release|x64.Build.0 = Release|x64
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Release|x86.ActiveCfg = Release|Win32
{62CCFC20-46DF-4039-97A5-AA068BD6A016}.Release|x86.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
EndGlobal

@ -48,8 +48,6 @@
j:=f;
i:=t;
call q;
write(a);
write(b);
begi:=begi+1;
end;
write(b);

@ -1,27 +1,25 @@
const a=10;
var b,c;
var b,c,e;
procedure p;
var d;
begin
d:=20;
write(d);
c:=d/a;
write(c);
c:=c+b;
write(c);
if a<c then c:=c*2;
write(c);
end;
begin
read (b);
while b#0 do
begin
e := b;
e := 4*e/2/3+(3*1);
call p;
write(c);
write(e);
read(b);
b := 4*b/2/3+(3*1);
write(b);
end;
b:=1;
b:=999999999;
write(b);
end.

@ -1,12 +1,31 @@
# BadassPascal
### This code came from my undergrad course project for compiler principles in 2015, although I did minimum bug fixes on this recently, this code still can not be considered as efficient nor even readible by any means because a lot of hacks were used to make it work and the writing doesn't confrom to a stable coding style either. However, it is something that I was proud of at that time.
# AwesomePascal
Another PL/0 language (https://en.wikipedia.org/wiki/PL/0) compiler and debugger written in C++.
Another PL/0 language (https://en.wikipedia.org/wiki/PL/0) compiler and debugger that is written in C++.
## Introduction
This code came from my undergrad course project for compiler principles in 2015. The code quality is beyond horrible but it's some of my earliest big projects.
## Architecture
- The compiler uses **SLR(1)** parsing. The grammar is hard-coded in the form of an LR parsing table (`states`) and the FOLLOW set (`follows`) which is initialized in `initStates()` function.
- The compiler was written from the ground up **without any third-party libraries** except the standard C++ library.
- It contains:
- A lexer (`GETSYM()` function) that processes the input into tokens and literals while constructing a symbol table
- A parser (`BLOCK()` function) that uses shift/reduce-parsing to generate the target code (pseudo-assembly)
- An interpreter (`INTERPRET()` function) that executes the pseudo-assembly code.
## Build
Supported Environments:
MSVC project: BadassPascal.sln
GNU C++/Clang: compile BadassPascal.cpp directly
>e.g.
>`$ g++ -O3 BadassPascal.cpp -o BP`
- MSVC project: AwesomePascal.vcxproj
- GNU C++/Clang: compile AwesomePascal.cpp directly
## Examples
- InsertionSort.pas: A simple program that takes 5 integers and sorts them in descending order.
- NumericExpr.pas: A simple program that contains numerical expressions and control flow.
-
## Usage
>`$ g++ -O3 -DNDEBUG AwesomePascal.cpp -o BP`
>`$ ./BP InsersionSort.pas`

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