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Added equality comparisons == and !=

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This commit is contained in:
Sam Stevens
2014-05-29 15:28:07 +01:00
parent 3df5b9ae84
commit d4e84782ef
9 changed files with 106 additions and 22 deletions
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30
functions.c
View File

@@ -27,6 +27,8 @@ void lenv_add_builtin_funcs(lenv* env) {
lenv_add_builtin(env, "<", builtin_comp_lt);
lenv_add_builtin(env, ">=", builtin_comp_ge);
lenv_add_builtin(env, "<=", builtin_comp_le);
lenv_add_builtin(env, "==", builtin_comp_eq);
lenv_add_builtin(env, "!=", builtin_comp_neq);
//List/Util functions
lenv_add_builtin(env, "list", builtin_list);
@@ -57,6 +59,8 @@ char* builtin_op_strname(BUILTIN_OP_TYPE op) {
case BUILTIN_COMP_LT: return "<";
case BUILTIN_COMP_GE: return ">=";
case BUILTIN_COMP_LE: return "<=";
case BUILTIN_COMP_EQ: return "==";
case BUILTIN_COMP_NEQ: return "!=";
default: return "UNKNOWN";
}
}
@@ -128,7 +132,7 @@ lval* builtin_pow(lenv* env, lval* val){
//End Math Functions
//Start Comparison Functions
lval* builtin_comp(lenv* env, lval* val, BUILTIN_OP_TYPE op) {
lval* builtin_comp_num(lenv* env, lval* val, BUILTIN_OP_TYPE op) {
char* opName = builtin_op_strname(op);
LASSERT_ARG_COUNT(opName, val, val, 2);
LASSERT_TYPE(opName, val, val->cell_list[0], LVAL_NUM);
@@ -149,16 +153,32 @@ lval* builtin_comp(lenv* env, lval* val, BUILTIN_OP_TYPE op) {
return lval_num(r);
}
lval* builtin_comp_gt(lenv* env, lval* val) {
return builtin_comp(env, val, BUILTIN_COMP_GT);
return builtin_comp_num(env, val, BUILTIN_COMP_GT);
}
lval* builtin_comp_lt(lenv* env, lval* val) {
return builtin_comp(env, val, BUILTIN_COMP_LT);
return builtin_comp_num(env, val, BUILTIN_COMP_LT);
}
lval* builtin_comp_ge(lenv* env, lval* val) {
return builtin_comp(env, val, BUILTIN_COMP_GE);
return builtin_comp_num(env, val, BUILTIN_COMP_GE);
}
lval* builtin_comp_le(lenv* env, lval* val) {
return builtin_comp(env, val, BUILTIN_COMP_LE);
return builtin_comp_num(env, val, BUILTIN_COMP_LE);
}
lval* builtin_comp_value(lenv* env, lval* val, BUILTIN_OP_TYPE op) {
LASSERT_ARG_COUNT(builtin_op_strname(op), val, val, 2);
BOOL result = FALSE;
result = lval_equal(val->cell_list[0], val->cell_list[1]);
if (op == BUILTIN_COMP_NEQ) {
result = !result;
}
return lval_num((int)result);
}
lval* builtin_comp_eq(lenv* env, lval* val) {
return builtin_comp_value(env, val, BUILTIN_COMP_EQ);
}
lval* builtin_comp_neq(lenv* env, lval* val) {
return builtin_comp_value(env, val, BUILTIN_COMP_NEQ);
}
//End Comparison Functions

8
functions.h
View File

@@ -18,7 +18,8 @@ extern "C" {
enum BUILTIN_OP_TYPE {
BUILTIN_OP_ADD, BUILTIN_OP_SUB, BUILTIN_OP_DIV, BUILTIN_OP_MUL, BUILTIN_OP_POW,
BUILTIN_COMP_GT, BUILTIN_COMP_LT, BUILTIN_COMP_GE, BUILTIN_COMP_LE
BUILTIN_COMP_GT, BUILTIN_COMP_LT, BUILTIN_COMP_GE, BUILTIN_COMP_LE,
BUILTIN_COMP_EQ, BUILTIN_COMP_NEQ
};
char* builtin_op_strname(BUILTIN_OP_TYPE op);
@@ -36,11 +37,14 @@ extern "C" {
lval* builtin_pow(lenv* env, lval* val);
//Comparison Functions
lval* builtin_comp(lenv* env, lval* val, BUILTIN_OP_TYPE op);
lval* builtin_comp_num(lenv* env, lval* val, BUILTIN_OP_TYPE op);
lval* builtin_comp_gt(lenv* env, lval* val);
lval* builtin_comp_lt(lenv* env, lval* val);
lval* builtin_comp_ge(lenv* env, lval* val);
lval* builtin_comp_le(lenv* env, lval* val);
lval* builtin_comp_value(lenv* env, lval* val, BUILTIN_OP_TYPE op);
lval* builtin_comp_eq(lenv* env, lval* val);
lval* builtin_comp_neq(lenv* env, lval* val);
//List/Util functions
lval* builtin_list(lenv* env, lval* val);

2
lang.h
View File

@@ -34,6 +34,8 @@ extern "C" {
LASSERT(val, subject->cell_count >= expectedNum, \
LERR_SYNTAX, "%s Expected %ld or more arguments got %ld", name, expectedNum, subject->cell_count )
mpc_ast_t* tokenize(char *input);
lval* parse(mpc_ast_t *t);
lval* eval_builtin_op(lval* val, char* op);

1
lenv.c
View File

@@ -1,5 +1,4 @@
#include <stdlib.h>
#include <bits/stdlib-bsearch.h>
#include "lang.h"
#include "util.h"

40
lval.c
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@@ -1,4 +1,5 @@
#include <stdlib.h>
#include <float.h>
#include "lang.h"
#include "util.h"
@@ -135,6 +136,45 @@ lval* lval_call(lenv* env, lval* function, lval* args) {
return eval(func->env, lval_add(lval_s_expr(), lval_copy(func->body)));
}
BOOL lval_equal(lval* a, lval* b) {
if (a->type != b->type) {
return FALSE;
}
switch(a->type) {
case LVAL_ERR: return a->data.err.num == b->data.err.num;
case LVAL_EXIT: return TRUE;
case LVAL_NUM: return fabs(a->data.num - b->data.num) <= DBL_EPSILON;
case LVAL_SYM: return strcmp(a->data.sym, b->data.sym) == 0;
case LVAL_FUNC:
if (a->data.func->builtin != NULL) {
if (b->data.func->builtin != NULL) {
return a->data.func->builtin == a->data.func->builtin;
} else {
return FALSE;
}
} else {
if (b->data.func->builtin == NULL) {
return FALSE;
} else {
return lval_equal(b->data.func->formals, b->data.func->formals)
&& lval_equal(b->data.func->body, b->data.func->body);
}
}
case LVAL_Q_EXPR:
case LVAL_S_EXPR:
if (a->cell_count != b->cell_count) { return 0; }
for (int i = 0; i < a->cell_count; i++) {
if (!lval_equal(a->cell_list[i], b->cell_list[i])) {
return FALSE;
}
}
return TRUE;
default: return FALSE;
}
}
void lval_delete(lval* val) {
switch(val->type) {
case LVAL_NUM: break;

3
lval.h
View File

@@ -19,6 +19,7 @@ typedef struct lval lval;
struct lval_func;
typedef struct lval_func lval_func;
#include "main.h"
#include "lenv.h"
enum VAL_TYPE { LVAL_ERR, LVAL_NUM, LVAL_SYM, LVAL_FUNC, LVAL_S_EXPR, LVAL_Q_EXPR, LVAL_EXIT };
@@ -67,7 +68,9 @@ lval* lval_add(lval* val, lval* x);
lval* lval_pop(lval* val, int i);
lval* lval_take(lval* val, int i);
lval* lval_join(lval* a, lval* b);
lval* lval_call(lenv* env, lval* function, lval* args);
BOOL lval_equal(lval* a, lval* b);
void lval_delete(lval* val);
lval* lval_copy(lval* current);

5
main.h
View File

@@ -14,6 +14,11 @@ extern "C" {
#define VERSION "0.1"
typedef unsigned char BOOL;
#define TRUE 1
#define FALSE 0
int main(int argc, char** argv);
void lval_expr_print(lval* val, char* open, char* close);

16
nbproject/Makefile-Release.mk
View File

@@ -58,7 +58,7 @@ FFLAGS=
ASFLAGS=
# Link Libraries and Options
LDLIBSOPTIONS=
LDLIBSOPTIONS=-lm `pkg-config --libs libedit`
# Build Targets
.build-conf: ${BUILD_SUBPROJECTS}
@@ -71,37 +71,37 @@ ${CND_DISTDIR}/${CND_CONF}/${CND_PLATFORM}/klisp: ${OBJECTFILES}
${OBJECTDIR}/functions.o: functions.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/functions.o functions.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/functions.o functions.c
${OBJECTDIR}/lang.o: lang.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lang.o lang.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lang.o lang.c
${OBJECTDIR}/lenv.o: lenv.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lenv.o lenv.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lenv.o lenv.c
${OBJECTDIR}/lib/mpc/mpc.o: lib/mpc/mpc.c
${MKDIR} -p ${OBJECTDIR}/lib/mpc
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lib/mpc/mpc.o lib/mpc/mpc.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lib/mpc/mpc.o lib/mpc/mpc.c
${OBJECTDIR}/lval.o: lval.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lval.o lval.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/lval.o lval.c
${OBJECTDIR}/main.o: main.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/main.o main.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/main.o main.c
${OBJECTDIR}/util.o: util.c
${MKDIR} -p ${OBJECTDIR}
${RM} "$@.d"
$(COMPILE.c) -O2 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/util.o util.c
$(COMPILE.c) -O3 -w -Ilib/mpc `pkg-config --cflags libedit` -std=c99 -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/util.o util.c
# Subprojects
.build-subprojects:

13
nbproject/configurations.xml
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@@ -104,7 +104,12 @@
</toolsSet>
<compileType>
<cTool>
<developmentMode>5</developmentMode>
<developmentMode>6</developmentMode>
<standard>3</standard>
<incDir>
<pElem>lib/mpc</pElem>
</incDir>
<warningLevel>0</warningLevel>
</cTool>
<ccTool>
<developmentMode>5</developmentMode>
@@ -115,6 +120,12 @@
<asmTool>
<developmentMode>5</developmentMode>
</asmTool>
<linkerTool>
<linkerLibItems>
<linkerLibStdlibItem>Mathematics</linkerLibStdlibItem>
<linkerOptionItem>`pkg-config --libs libedit`</linkerOptionItem>
</linkerLibItems>
</linkerTool>
</compileType>
<item path="functions.c" ex="false" tool="0" flavor2="0">
</item>