Hello world is working

.gitignore

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+#Editor generated files
+*.sln
+*.vcproj
+*.suo
+*.ncb
+*.user
+
+#Directories
+Release/
+Debug/
+Out/
+Lib/
+release/
+debug/
+out/
+lib/
+
+#Project generated files
+*.db
+*.o
+*.a
+*.exe
+*.dll
+*.meta
+*.log
+out
+*.stackdump
+*.tb
+
+#Shell files
+*.bat
+*.sh

.gitmodules

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+[submodule "Toy"]
+	path = Toy
+	url = https://github.com/Ratstail91/Toy

makefile

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+export OUTDIR = out
+export LIBDIR = lib
+export TOY_OUTDIR = ../$(LIBDIR)
+
+all: $(OUTDIR) $(LIBDIR) toy
+	$(MAKE) -C source
+	cp $(LIBDIR)/*.dll $(OUTDIR)
+
+toy: $(LIBDIR)
+	$(MAKE) -C Toy/source
+
+$(OUTDIR):
+	mkdir $(OUTDIR)
+
+$(LIBDIR):
+	mkdir $(LIBDIR)
+
+.PHONY: clean
+
+clean:
+ifeq ($(findstring CYGWIN, $(shell uname)),CYGWIN)
+	find . -type f -name '*.o' -exec rm -f -r -v {} \;
+	find . -type f -name '*.a' -exec rm -f -r -v {} \;
+	find . -type f -name '*.exe' -exec rm -f -r -v {} \;
+	find . -type f -name '*.dll' -exec rm -f -r -v {} \;
+	find . -type f -name '*.lib' -exec rm -f -r -v {} \;
+	find . -type f -name '*.so' -exec rm -f -r -v {} \;
+	find . -empty -type d -delete
+else ifeq ($(shell uname),Linux)
+	find . -type f -name '*.o' -exec rm -f -r -v {} \;
+	find . -type f -name '*.a' -exec rm -f -r -v {} \;
+	find . -type f -name '*.exe' -exec rm -f -r -v {} \;
+	find . -type f -name '*.dll' -exec rm -f -r -v {} \;
+	find . -type f -name '*.lib' -exec rm -f -r -v {} \;
+	find . -type f -name '*.so' -exec rm -f -r -v {} \;
+	rm -rf out
+	find . -empty -type d -delete
+else ifeq ($(OS),Windows_NT)
+	$(RM) *.o *.a *.exe 
+else
+	@echo "Deletion failed - what platform is this?"
+endif
+
+rebuild: clean all

source/main.c

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+//This "hello world" was borrowed from the net
+//https://gist.github.com/fschr/92958222e35a823e738bb181fe045274
+
+// SDL2 Hello, World!
+// This should display a white screen for 2 seconds
+// compile with: clang++ main.cpp -o hello_sdl2 -lSDL2
+// run with: ./hello_sdl2
+#include <SDL2/SDL.h>
+#include <stdio.h>
+
+#include "lexer.h"
+#include "parser.h"
+#include "compiler.h"
+#include "interpreter.h"
+
+#define SCREEN_WIDTH 640
+#define SCREEN_HEIGHT 480
+
+int main(int argc, char* args[]) {
+  SDL_Window* window = NULL;
+  SDL_Surface* screenSurface = NULL;
+  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+    fprintf(stderr, "could not initialize sdl2: %s\n", SDL_GetError());
+    return 1;
+  }
+  window = SDL_CreateWindow(
+			    "hello_sdl2",
+			    SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+			    SCREEN_WIDTH, SCREEN_HEIGHT,
+			    SDL_WINDOW_SHOWN
+			    );
+  if (window == NULL) {
+    fprintf(stderr, "could not create window: %s\n", SDL_GetError());
+    return 1;
+  }
+  screenSurface = SDL_GetWindowSurface(window);
+  SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
+  SDL_UpdateWindowSurface(window);
+
+	//hacked in to test linking
+	{
+		//source
+		char* source = "print \"Hello world!\";";
+
+		//test basic compilation & collation
+		Lexer lexer;
+		Parser parser;
+		Compiler compiler;
+		Interpreter interpreter;
+
+		initLexer(&lexer, source);
+		initParser(&parser, &lexer);
+		initCompiler(&compiler);
+		initInterpreter(&interpreter);
+
+		Node* node = scanParser(&parser);
+
+		//write
+		writeCompiler(&compiler, node);
+
+		//collate
+		int size = 0;
+		unsigned char* bytecode = collateCompiler(&compiler, &size);
+
+		//run
+		runInterpreter(&interpreter, bytecode, size);
+
+		//cleanup
+		freeNode(node);
+		freeParser(&parser);
+		freeCompiler(&compiler);
+		freeInterpreter(&interpreter);
+	}
+
+	SDL_Delay(2000);
+  SDL_DestroyWindow(window);
+  SDL_Quit();
+  return 0;
+}

source/makefile

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+CC=gcc
+
+IDIR+=. ../Toy/source
+CFLAGS+=$(addprefix -I,$(IDIR)) -DSDL_MAIN_HANDLED -g -Wall -W -pedantic -Wno-unused-parameter -Wno-unused-function -Wno-unused-variable
+LIBS+=-lSDL2 -ltoy
+
+ODIR = obj
+SRC = $(wildcard *.c)
+OBJ = $(addprefix $(ODIR)/,$(SRC:.c=.o))
+
+OUT=../$(OUTDIR)/airport
+
+all: $(OBJ)
+	$(CC) $(CFLAGS) -o $(OUT) $(OBJ) -L../$(LIBDIR) $(LIBS)
+
+$(OBJ): | $(ODIR)
+
+$(ODIR):
+	mkdir $(ODIR)
+
+$(ODIR)/%.o: %.c
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+.PHONY: clean
+
+clean:
+	$(RM) $(ODIR)