bshell: re-organise build into three separate components

bshell: the front-end binary
bshell.runtime: contains the parser, compiler, and classes needed to run bshell scripts
bshell.core: contains the builtin commandlets and aliases

bshell.runtime/compile/op.c

@@ -0,0 +1,126 @@
+#include "compile-node.h"
+
+#include <bshell/runtime/operator.h>
+
+static enum bshell_opcode opcode_for_op(enum bshell_operator_id op)
+{
+	switch (op) {
+	case BSHELL_OP_ADD:
+		return BSHELL_OPCODE_ADD;
+	case BSHELL_OP_SUBTRACT:
+		return BSHELL_OPCODE_SUB;
+	case BSHELL_OP_MULTIPLY:
+		return BSHELL_OPCODE_MUL;
+	case BSHELL_OP_DIVIDE:
+		return BSHELL_OPCODE_DIV;
+	case BSHELL_OP_MODULO:
+		return BSHELL_OPCODE_MOD;
+	case BSHELL_OP_INCREMENT:
+		return BSHELL_OPCODE_INC;
+	case BSHELL_OP_DECREMENT:
+		return BSHELL_OPCODE_DEC;
+	case BSHELL_OP_LEFT_SHIFT:
+		return BSHELL_OPCODE_SHL;
+	case BSHELL_OP_RIGHT_SHIFT:
+		return BSHELL_OPCODE_SHR;
+	case BSHELL_OP_BINARY_AND:
+		return BSHELL_OPCODE_BAND;
+	case BSHELL_OP_BINARY_OR:
+		return BSHELL_OPCODE_BOR;
+	case BSHELL_OP_BINARY_XOR:
+		return BSHELL_OPCODE_BXOR;
+	case BSHELL_OP_BINARY_NOT:
+		return BSHELL_OPCODE_BNOT;
+	case BSHELL_OP_LESS_THAN:
+		return BSHELL_OPCODE_CMP_LT;
+	case BSHELL_OP_GREATER_THAN:
+		return BSHELL_OPCODE_CMP_GT;
+	case BSHELL_OP_EQUAL:
+		return BSHELL_OPCODE_CMP_EQ;
+	case BSHELL_OP_NOT_EQUAL:
+		return BSHELL_OPCODE_CMP_NE;
+	case BSHELL_OP_LESS_EQUAL:
+		return BSHELL_OPCODE_CMP_LE;
+	case BSHELL_OP_GREATER_EQUAL:
+		return BSHELL_OPCODE_CMP_GE;
+	case BSHELL_OP_LOGICAL_AND:
+		return BSHELL_OPCODE_LAND;
+	case BSHELL_OP_LOGICAL_OR:
+		return BSHELL_OPCODE_LOR;
+	case BSHELL_OP_LOGICAL_XOR:
+		return BSHELL_OPCODE_LXOR;
+	case BSHELL_OP_LOGICAL_NOT:
+		return BSHELL_OPCODE_LNOT;
+	case BSHELL_OP_RANGE:
+		return BSHELL_OPCODE_RANGE;
+	case BSHELL_OP_MATCH:
+		return BSHELL_OPCODE_MATCH;
+	case BSHELL_OP_REPLACE:
+		return BSHELL_OPCODE_REPLACE;
+	case BSHELL_OP_LIKE:
+		return BSHELL_OPCODE_LIKE;
+	case BSHELL_OP_IN:
+		return BSHELL_OPCODE_IN;
+	case BSHELL_OP_FORMAT:
+		return BSHELL_OPCODE_FMT;
+	case BSHELL_OP_CONTAINS:
+		return BSHELL_OPCODE_CONTAINS;
+	case BSHELL_OP_USPLIT:
+		return BSHELL_OPCODE_SPLIT;
+	case BSHELL_OP_BSPLIT:
+		return BSHELL_OPCODE_SPLIT;
+	case BSHELL_OP_UJOIN:
+		return BSHELL_OPCODE_JOIN;
+	case BSHELL_OP_BJOIN:
+		return BSHELL_OPCODE_JOIN;
+	case BSHELL_OP_IS:
+		return BSHELL_OPCODE_IS;
+	case BSHELL_OP_AS:
+		return BSHELL_OPCODE_AS;
+	case BSHELL_OP_ACCESS:
+		return BSHELL_OPCODE_LDPROP;
+	default:
+		return BSHELL_OPCODE_NOP;
+	}
+}
+
+enum bshell_status op_load(struct compile_ctx *ctx, struct compile_value *value)
+{
+	enum bshell_opcode opcode = opcode_for_op(value->v_op);
+	if (opcode != BSHELL_OPCODE_NOP) {
+		compile_value_load(ctx, value->v_right);
+		compile_value_load(ctx, value->v_left);
+		bshell_scriptblock_push_instruction(
+			ctx->c_block,
+			opcode_for_op(value->v_op),
+			0);
+		return BSHELL_SUCCESS;
+	}
+
+	switch (value->v_op) {
+	case BSHELL_OP_ASSIGN:
+		compile_value_load(ctx, value->v_right);
+		compile_value_store(ctx, value->v_left);
+		break;
+	default:
+		return BSHELL_ERR_NOT_SUPPORTED;
+	}
+
+	return BSHELL_SUCCESS;
+}
+
+static const struct compile_value_type op_type = {
+	.v_load = op_load,
+};
+
+struct compile_result compile_op(
+	struct compile_ctx *ctx,
+	struct bshell_ast_node *src)
+{
+	struct bshell_op_ast_node *op = (struct bshell_op_ast_node *)src;
+	struct compile_value *left = NULL, *right = NULL;
+	left = compile_pop_value(ctx);
+	right = compile_pop_value(ctx);
+	compile_push_op(ctx, src, &op_type, op->n_op->op_id, left, right);
+	return COMPILE_OK(0);
+}