Student Language Development Environment

What's new?

Changes with respect to version 2.7 of TCGS

GUI version only:

• To debug your compiler a parser debugger can be generated which visualises the parsing process.
• The Topspeed C compiler is no longer supported, instead MS Visual C++ is used. The public domain DJGPP GNU C compiler (in combination with RSXNTDJ) is also supported.
• The user-interface is ported to the Win32 environment.

Both commandline and GUI version:

• The program is renamed from TCGS into SLADE.
• The API action enter_value() is renamed into enter_length() according to [AN96].
• The API action emit_load() has become a third boolean parameter indicating whether checking upon "used but not set" variables should be enabled/disabled.
• The instruction set of the interpreter is a superset of the VIM instruction set defined on page 267 of [AN96]. The following instructions differ in their semantics with respect to [AN96]:

      wrint   pop value;
              write value;
              push value;
      ldind   pop address;
              push address;
              push Data[address];
      stind   pop value;
              pop address;
              push address;
              Data[address]= value;
  

• The following instructions are appended to do the laboratory exercises.

      and, eqn, ldnvar, nen, not, or, pop, popn, rdbool, rdchar,
      rdstring, swap, stnvar, wrbool, wrchar, wrstring
  

  See the on-line help or the laboratory guide for their meaning.
• There are some files added to implement code generation. See the v2x example and the codgen script file in the bin directory.

[AN96]

H.Alblas, A.Nymeyer: Practice and Principles of Compiler Building with C, Prentice Hall 1996.