From a133079e7d76420e0e5f0f386ee714e29776a6fc Mon Sep 17 00:00:00 2001
From: Julian T <julian@jtle.dk>
Date: Wed, 16 Oct 2019 16:34:26 +0200
Subject: Some operating system work

---
 sem1/osc/mm10/Makefile         |  19 ++++++++++++++++
 sem1/osc/mm10/opg1.l           |  22 ++++++++++++++++++
 sem1/osc/mm10/opg3.l           |  36 ++++++++++++++++++++++++++++++
 sem1/osc/mm10/opgaver.md       |  49 +++++++++++++++++++++++++++++++++++++++++
 sem1/osc/mm10/stateMachine.png | Bin 0 -> 21881 bytes
 5 files changed, 126 insertions(+)
 create mode 100644 sem1/osc/mm10/Makefile
 create mode 100644 sem1/osc/mm10/opg1.l
 create mode 100644 sem1/osc/mm10/opg3.l
 create mode 100644 sem1/osc/mm10/opgaver.md
 create mode 100644 sem1/osc/mm10/stateMachine.png

diff --git a/sem1/osc/mm10/Makefile b/sem1/osc/mm10/Makefile
new file mode 100644
index 0000000..3d4089e
--- /dev/null
+++ b/sem1/osc/mm10/Makefile
@@ -0,0 +1,19 @@
+opgaver=opg1 opg3
+
+LEX=flex
+CC=gcc
+LINKFLAG=-lfl
+DEFAULT_TARGET=all
+
+%: %.yy.c
+	$(CC) -o $@ $^ $(LINKFLAG)
+
+%.yy.c: %.l
+	$(LEX) -o $@ $^
+
+all: $(opgaver)
+
+phony: all clean
+
+clean:
+	rm $(opgaver)
diff --git a/sem1/osc/mm10/opg1.l b/sem1/osc/mm10/opg1.l
new file mode 100644
index 0000000..b5cb478
--- /dev/null
+++ b/sem1/osc/mm10/opg1.l
@@ -0,0 +1,22 @@
+%{
+
+#include <stdio.h>
+
+%}
+
+ting		(a|b)abcd
+
+%%
+
+{ting}		{ printf("Fandt ting %s\n", yytext); return 1; }
+.			{ printf("Meh"); }
+
+%%
+
+int main(void) {
+
+	printf("yylex: %d\n", yylex());
+
+	return 0;
+	
+}
diff --git a/sem1/osc/mm10/opg3.l b/sem1/osc/mm10/opg3.l
new file mode 100644
index 0000000..1c4b9c7
--- /dev/null
+++ b/sem1/osc/mm10/opg3.l
@@ -0,0 +1,36 @@
+%{
+
+#include <stdio.h>
+
+#define BEGIN_T 1
+#define END_T 2
+#define NUM_T 3
+#define VAR_T 4
+
+%}
+
+VAR			[a-zA-Z][a-zA-Z\_\-0-9]*
+TAL			[0-9]+
+
+%%
+
+begin		{printf("Found a BEGIN\n"); return BEGIN_T;}
+end			{printf("Found a END\n"); return END_T;}
+{VAR}		{printf("Found a variable %s\n", yytext); return VAR_T;}
+{TAL}		{printf("Found a number %d\n", strtol(yytext, NULL, 10)); return NUM_T;}
+
+%%
+
+int main(void) {
+
+	for(;;) {
+		int t = yylex();
+		printf("yylex: %d\n", t);
+		if( t == END_T ) {
+			break;
+		}
+	}
+
+	return 0;
+	
+}
diff --git a/sem1/osc/mm10/opgaver.md b/sem1/osc/mm10/opgaver.md
new file mode 100644
index 0000000..781ee13
--- /dev/null
+++ b/sem1/osc/mm10/opgaver.md
@@ -0,0 +1,49 @@
+# MM10
+
+## Opgave 1
+
+A)
+
+<img src="./stateMachine.png"></img>
+
+B)
+
+Kan ses i den tilhørende lex fil.
+For at compile kør:
+
+```
+make opg1
+```
+
+C)
+
+```
+aabcd
+
+Fandt ting aabcd
+yylex: 1
+```
+
+```
+afggfd
+
+MehMehMehMehMehMeh
+```
+
+## Opgave 2
+
+Regulære udtryk for:
+
+```
+c kommentarer: \/\/.*\n
+real konstant: [-+]?[0-9]*(\.[0-9]+)?(e\+[0-9]+)?
+starter med store: [A-Z][a-zA-z]+
+```
+
+## Opgave 3
+
+Dette laver jeg i opg3.l filen.
+
+
+
+
diff --git a/sem1/osc/mm10/stateMachine.png b/sem1/osc/mm10/stateMachine.png
new file mode 100644
index 0000000..08c5bf2
Binary files /dev/null and b/sem1/osc/mm10/stateMachine.png differ
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