Commit work in progress changes

7 files changed, 192 insertions, 2 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 9644940..664f9be 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -4,6 +4,9 @@ noinst_HEADERS = aplwc_internal.h
 
 libaplwc_la_SOURCES = \
 	autocomplete.c \
+	compile.c \
+	decode_instr.c \
+	encode_instr.c \
 	eval.c \
 	exit.c \
 	free_ast.c \
diff --git a/lib/aplwc_internal.h b/lib/aplwc_internal.h
index dd676fb..44785ed 100644
--- a/lib/aplwc_internal.h
+++ b/lib/aplwc_internal.h
@@ -22,6 +22,7 @@
 #define APLWC_INTERNAL_H
 
 #include <stdarg.h>
+#include <stdint.h>
 #include <stdbool.h>
 
 enum aplwc_token_tag {
@@ -37,6 +38,12 @@ enum aplwc_ast_tag {
 	APLWC_AST_ERROR,
 };
 
+enum aplwc_instr_tag {
+	APLWC_INSTR_SYSCMD_CALL,
+	APLWC_INSTR_ERROR,
+	APLWC_INSTR_END,
+};
+
 struct aplwc {
 	void *(*alloc)(size_t);
 	void (*free)(void *);
@@ -58,6 +65,8 @@ struct aplwc_eval_context {
 
 	size_t token_offset;
 	struct aplwc_ast *ast;
+
+	struct aplwc_instrs *instrs;
 };
 
 struct aplwc_token {
@@ -80,15 +89,29 @@ struct aplwc_ast {
 	} data;
 };
 
+struct aplwc_instrs {
+	size_t n_instrs;
+	uint64_t *instrs;
+};
+
+struct aplwc_instr {
+	int type;
+	enum aplwc_instr_tag op;
+	
+	uint64_t encoded;
+};
 struct aplwc_syscmd *aplwc_lookup_syscmd(struct aplwc *, const char *);
 struct aplwc_eval_context *aplwc_new_eval_context(struct aplwc *);
 void aplwc_scan_line(struct aplwc_eval_context *, const char *);
 void aplwc_parse(struct aplwc_eval_context *);
+void aplwc_compile(struct aplwc_eval_context *);
 void aplwc_eval(struct aplwc_eval_context *);
 void aplwc_free_eval_context(struct aplwc_eval_context *);
 void aplwc_free_ast(struct aplwc *, struct aplwc_ast *);
 char *aplwc_strdup(struct aplwc *, const char *);
 void aplwc_output(struct aplwc *, const char *, ...);
 void aplwc_voutput(struct aplwc *, const char *, va_list);
-
+void aplwc_encode_instr(struct aplwc_instr *);
+void aplwc_decode_instr(struct aplwc_instr *);
+	
 #endif /* APLWC_INTERNAL_H */
diff --git a/lib/compile.c b/lib/compile.c
new file mode 100644
index 0000000..ce7b5db
--- /dev/null
+++ b/lib/compile.c
@@ -0,0 +1,73 @@
+/* Aplwc - A Programming Language With Constraints
+ *
+ * Copyright (C) 2026 Peter Mikkelsen <petermikkelsen10@gmail.com>
+ *
+ * This file is part of aplwc.
+ *
+ * Aplwc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Aplwc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with aplwc.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <aplwc.h>
+#include "aplwc_internal.h"
+
+static void compile(struct aplwc_eval_context *, struct aplwc_ast *);
+static void emit(struct aplwc_eval_context *, uint64_t instr);
+static void emit_t0(struct aplwc_eval_context *, enum aplwc_instr_tag);
+static uint64_t encode_t0(enum aplwc_instr_tag);
+
+void
+aplwc_compile(struct aplwc_eval_context *context)
+{
+	compile(context, context->ast);
+}
+
+static void
+compile(struct aplwc_eval_context *context, struct aplwc_ast *node)
+{
+	context->instrs = context->aplwc->alloc(sizeof(*context->instrs));
+	memset(context->instrs, 0, sizeof(*context->instrs));
+	
+	switch(node->tag){
+	case APLWC_AST_SYSCMD:
+		emit_t0(context, APLWC_INSTR_SYSCMD_CALL);
+		break;
+	case APLWC_AST_ERROR:
+		emit_t0(context, APLWC_INSTR_ERROR);
+		break;
+	}
+
+	emit_t0(context, APLWC_INSTR_END);
+}
+
+static void
+emit(struct aplwc_eval_context *context, uint64_t instr)
+{
+	context->instrs->n_instrs++;
+	context->instrs->instrs = context->aplwc->realloc(context->instrs->instrs, sizeof(*context->instrs->instrs) * context->instrs->n_instrs);
+
+	context->instrs->instrs[context->instrs->n_instrs-1] = instr;
+}
+
+static void
+emit_t0(struct aplwc_eval_context *context, enum aplwc_instr_tag op)
+{
+	struct aplwc_instr instr = {
+		.type = 0,
+		.op = op,
+	};
+	aplwc_encode_instr(&instr);
+	emit(context, instr.encoded);
+}
diff --git a/lib/decode_instr.c b/lib/decode_instr.c
new file mode 100644
index 0000000..e16133f
--- /dev/null
+++ b/lib/decode_instr.c
@@ -0,0 +1,37 @@
+/* Aplwc - A Programming Language With Constraints
+ *
+ * Copyright (C) 2026 Peter Mikkelsen <petermikkelsen10@gmail.com>
+ *
+ * This file is part of aplwc.
+ *
+ * Aplwc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Aplwc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with aplwc.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aplwc.h>
+#include "aplwc_internal.h"
+
+static void decode_t0(struct aplwc_instr *);
+
+void
+aplwc_decode_instr(struct aplwc_instr *instr)
+{
+	if((instr->encoded & 1) == 0)
+		decode_t0(instr);
+}
+
+static void
+decode_t0(struct aplwc_instr *instr)
+{
+	instr->op = instr->encoded >> 1;
+}
diff --git a/lib/encode_instr.c b/lib/encode_instr.c
new file mode 100644
index 0000000..d7e590e
--- /dev/null
+++ b/lib/encode_instr.c
@@ -0,0 +1,42 @@
+/* Aplwc - A Programming Language With Constraints
+ *
+ * Copyright (C) 2026 Peter Mikkelsen <petermikkelsen10@gmail.com>
+ *
+ * This file is part of aplwc.
+ *
+ * Aplwc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Aplwc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with aplwc.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aplwc.h>
+#include "aplwc_internal.h"
+
+static void encode_t0(struct aplwc_instr *);
+
+void
+aplwc_encode_instr(struct aplwc_instr *instr)
+{
+	instr->encoded = 0;
+	
+	switch(instr->type){
+	case 0:
+		encode_t0(instr);
+		break;
+	}
+}
+
+static void
+encode_t0(struct aplwc_instr *instr)
+{
+	instr->encoded |= (instr->op << 1);
+}
diff --git a/lib/eval.c b/lib/eval.c
index 6eaaddf..ffaf0cd 100644
--- a/lib/eval.c
+++ b/lib/eval.c
@@ -19,13 +19,23 @@
  */
 
 #include <stdio.h>
+#include <inttypes.h>
 #include <aplwc.h>
 #include "aplwc_internal.h"
 
 void
 aplwc_eval(struct aplwc_eval_context *context)
 {
-	struct aplwc_syscmd *syscmd;
+	struct aplwc_instr instr;
+	for(size_t i = 0; i < context->instrs->n_instrs; i++){
+		instr.encoded = context->instrs->instrs[i];
+		aplwc_decode_instr(&instr);
+		
+		printf("INSTR: 0x%016" PRIX64 " type=%02x op=%04x\n", instr.encoded, instr.type, instr.op);
+	}
+		
+
+/*	struct aplwc_syscmd *syscmd;
 	
 	switch(context->ast->tag){
 	case APLWC_AST_SYSCMD:
@@ -35,4 +45,5 @@ aplwc_eval(struct aplwc_eval_context *context)
 	case APLWC_AST_ERROR:
 		printf("cannot evaluate since parsing failed\n");
 	}
+*/
 }
diff --git a/lib/run_line.c b/lib/run_line.c
index 22f6055..354ab07 100644
--- a/lib/run_line.c
+++ b/lib/run_line.c
@@ -29,6 +29,7 @@ aplwc_run_line(struct aplwc *aplwc, const char *line)
 
 	aplwc_scan_line(context, line);	
 	aplwc_parse(context);
+	aplwc_compile(context);
 	aplwc_eval(context);
 	aplwc_free_eval_context(context);
 }